* [PATCH v9 0/8] i2c-atr and FPDLink
@ 2023-02-16 14:07 Tomi Valkeinen
2023-02-16 14:07 ` [PATCH v9 1/8] i2c: add I2C Address Translator (ATR) support Tomi Valkeinen
` (8 more replies)
0 siblings, 9 replies; 16+ messages in thread
From: Tomi Valkeinen @ 2023-02-16 14:07 UTC (permalink / raw)
To: linux-media, devicetree, linux-kernel, linux-i2c, Rob Herring,
Krzysztof Kozlowski, Wolfram Sang, Luca Ceresoli,
Andy Shevchenko, Matti Vaittinen, Laurent Pinchart
Cc: Mauro Carvalho Chehab, Peter Rosin, Liam Girdwood, Mark Brown,
Sakari Ailus, Michael Tretter, Shawn Tu, Hans Verkuil,
Mike Pagano, Krzysztof Hałasa, Marek Vasut,
Satish Nagireddy, Tomi Valkeinen
Hi,
You can find v8 from:
https://lore.kernel.org/all/20230120153417.1156207-1-tomi.valkeinen@ideasonboard.com/
Diff to v8 included below.
Main changes in v9:
- Add "media: subdev: Split V4L2_SUBDEV_ROUTING_NO_STREAM_MIX" patch
- Improved i2c-atr docs
- Pass adapter_parent to i2c_atr_add_adapter(), so that the i2c-atr adapters can be children of the serializers (instead of being children of the deserializer as before).
- UB9xx: Validate formats
- UB913: Convert incoming 2X8 formats to 1X16 on the output side
- UB9xx: Use 1X16 instead of 2X8 formats in FPD-Link and CSI-2 busses
- UB953/UB960: Drop TPG (for now), as it was too hacky
- UB960: Add TODO list
- UB960: Use unnamed structures to group fields
- UB960: Simplify tracking of the current rxport/txport register page
- UB960: Rename *_csiport_* to *_txport_* to match the rxport naming
- UB960: Use v4l2_fwnode_endpoint_parse
- UB960: Add 16bit register accessors
- UB960: Verify that each source only provides streams using a single VC
- UB960: Drop the (unused) legacy s_stream
- UB960: Use V4L2_SUBDEV_ROUTING_NO_STREAM_MIX
- Plenty of cosmetic/style changes
Tomi
Luca Ceresoli (1):
i2c: add I2C Address Translator (ATR) support
Tomi Valkeinen (7):
media: subdev: Split V4L2_SUBDEV_ROUTING_NO_STREAM_MIX
dt-bindings: media: add TI DS90UB913 FPD-Link III Serializer
dt-bindings: media: add TI DS90UB953 FPD-Link III Serializer
dt-bindings: media: add TI DS90UB960 FPD-Link III Deserializer
media: i2c: add DS90UB960 driver
media: i2c: add DS90UB913 driver
media: i2c: add DS90UB953 driver
.../bindings/media/i2c/ti,ds90ub913.yaml | 133 +
.../bindings/media/i2c/ti,ds90ub953.yaml | 134 +
.../bindings/media/i2c/ti,ds90ub960.yaml | 431 ++
Documentation/i2c/index.rst | 1 +
Documentation/i2c/muxes/i2c-atr.rst | 97 +
MAINTAINERS | 16 +
drivers/i2c/Kconfig | 9 +
drivers/i2c/Makefile | 1 +
drivers/i2c/i2c-atr.c | 545 +++
drivers/media/i2c/Kconfig | 47 +
drivers/media/i2c/Makefile | 3 +
drivers/media/i2c/ds90ub913.c | 906 ++++
drivers/media/i2c/ds90ub953.c | 1400 ++++++
drivers/media/i2c/ds90ub960.c | 4181 +++++++++++++++++
drivers/media/v4l2-core/v4l2-subdev.c | 17 +-
include/linux/i2c-atr.h | 116 +
include/media/i2c/ds90ub9xx.h | 22 +
include/media/v4l2-subdev.h | 16 +-
18 files changed, 8068 insertions(+), 7 deletions(-)
create mode 100644 Documentation/devicetree/bindings/media/i2c/ti,ds90ub913.yaml
create mode 100644 Documentation/devicetree/bindings/media/i2c/ti,ds90ub953.yaml
create mode 100644 Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml
create mode 100644 Documentation/i2c/muxes/i2c-atr.rst
create mode 100644 drivers/i2c/i2c-atr.c
create mode 100644 drivers/media/i2c/ds90ub913.c
create mode 100644 drivers/media/i2c/ds90ub953.c
create mode 100644 drivers/media/i2c/ds90ub960.c
create mode 100644 include/linux/i2c-atr.h
create mode 100644 include/media/i2c/ds90ub9xx.h
Interdiff against v8:
diff --git a/Documentation/i2c/muxes/i2c-atr.rst b/Documentation/i2c/muxes/i2c-atr.rst
index c7e060ca682d..da226fd4de63 100644
--- a/Documentation/i2c/muxes/i2c-atr.rst
+++ b/Documentation/i2c/muxes/i2c-atr.rst
@@ -5,6 +5,7 @@ Kernel driver i2c-atr
=====================
Author: Luca Ceresoli <luca@lucaceresoli.net>
+Author: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Description
-----------
@@ -47,24 +48,37 @@ Topology::
Alias table:
+A, B and C are three physical I2C busses, electrically independent from
+each other. The ATR receives the transactions initiated on bus A and
+propagates them on bus B or bus C or none depending on the device address
+in the transaction and based on the alias table.
+
+Alias table:
+
.. table::
- ====== =====
- Client Alias
- ====== =====
- X 0x20
- Y 0x30
- ====== =====
+ =============== =====
+ Client Alias
+ =============== =====
+ X (bus B, 0x10) 0x20
+ Y (bus C, 0x10) 0x30
+ =============== =====
Transaction:
- Slave X driver sends a transaction (on adapter B), slave address 0x10
- - ATR driver rewrites messages with address 0x20, forwards to adapter A
+ - ATR driver finds slave X is on bus B and has alias 0x20, rewrites
+ messages with address 0x20, forwards to adapter A
- Physical I2C transaction on bus A, slave address 0x20
- - ATR chip propagates transaction on bus B with address translated to 0x10
- - Slave X chip replies on bus B
- - ATR chip forwards reply on bus A
- - ATR driver rewrites messages with address 0x10
+ - ATR chip detects transaction on address 0x20, finds it in table,
+ propagates transaction on bus B with address translated to 0x10,
+ keeps clock streched on bus A waiting for reply
+ - Slave X chip (on bus B) detects transaction at its own physical
+ address 0x10 and replies normally
+ - ATR chip stops clock stretching and forwards reply on bus A,
+ with address translated back to 0x20
+ - ATR driver receives the reply, rewrites messages with address 0x10
+ as they were initially
- Slave X driver gets back the msgs[], with reply and address 0x10
Usage:
diff --git a/drivers/i2c/i2c-atr.c b/drivers/i2c/i2c-atr.c
index c872647ae808..a41e941ad972 100644
--- a/drivers/i2c/i2c-atr.c
+++ b/drivers/i2c/i2c-atr.c
@@ -130,6 +130,7 @@ static int i2c_atr_map_msgs(struct i2c_atr_chan *chan, struct i2c_msg *msgs,
if (unlikely(chan->orig_addrs_size < num)) {
u16 *new_buf;
+ /* We don't care about old data, hence no realloc() */
new_buf = kmalloc_array(num, sizeof(*new_buf), GFP_KERNEL);
if (!new_buf)
return -ENOMEM;
@@ -272,6 +273,9 @@ static int i2c_atr_attach_client(struct i2c_adapter *adapter,
if (ret)
goto err_free;
+ dev_dbg(atr->dev, "chan%u: client 0x%02x mapped at alias 0x%02x (%s)\n",
+ chan->chan_id, client->addr, alias_id, client->name);
+
c2a->client = client;
c2a->alias = alias_id;
list_add(&c2a->node, &chan->alias_list);
@@ -294,10 +298,15 @@ static void i2c_atr_detach_client(struct i2c_adapter *adapter,
atr->ops->detach_client(atr, chan->chan_id, client);
c2a = i2c_atr_find_mapping_by_client(&chan->alias_list, client);
- if (c2a) {
- list_del(&c2a->node);
- kfree(c2a);
- }
+ if (!c2a)
+ return; /* This shouldn't happen */
+
+ dev_dbg(atr->dev,
+ "chan%u: client 0x%02x unmapped from alias 0x%02x (%s)\n",
+ chan->chan_id, client->addr, c2a->alias, client->name);
+
+ list_del(&c2a->node);
+ kfree(c2a);
}
static int i2c_atr_bus_notifier_call(struct notifier_block *nb,
@@ -391,6 +400,7 @@ void i2c_atr_delete(struct i2c_atr *atr)
EXPORT_SYMBOL_NS_GPL(i2c_atr_delete, I2C_ATR);
int i2c_atr_add_adapter(struct i2c_atr *atr, u32 chan_id,
+ struct device *adapter_parent,
struct fwnode_handle *bus_handle)
{
struct i2c_adapter *parent = atr->parent;
@@ -413,6 +423,9 @@ int i2c_atr_add_adapter(struct i2c_atr *atr, u32 chan_id,
if (!chan)
return -ENOMEM;
+ if (!adapter_parent)
+ adapter_parent = dev;
+
chan->atr = atr;
chan->chan_id = chan_id;
INIT_LIST_HEAD(&chan->alias_list);
@@ -423,7 +436,7 @@ int i2c_atr_add_adapter(struct i2c_atr *atr, u32 chan_id,
chan->adap.owner = THIS_MODULE;
chan->adap.algo = &atr->algo;
chan->adap.algo_data = chan;
- chan->adap.dev.parent = dev;
+ chan->adap.dev.parent = adapter_parent;
chan->adap.retries = parent->retries;
chan->adap.timeout = parent->timeout;
chan->adap.quirks = parent->quirks;
diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
index efd5f717a5f7..6427ad971ca6 100644
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -29,6 +29,9 @@ obj-$(CONFIG_VIDEO_CS3308) += cs3308.o
obj-$(CONFIG_VIDEO_CS5345) += cs5345.o
obj-$(CONFIG_VIDEO_CS53L32A) += cs53l32a.o
obj-$(CONFIG_VIDEO_CX25840) += cx25840/
+obj-$(CONFIG_VIDEO_DS90UB913) += ds90ub913.o
+obj-$(CONFIG_VIDEO_DS90UB953) += ds90ub953.o
+obj-$(CONFIG_VIDEO_DS90UB960) += ds90ub960.o
obj-$(CONFIG_VIDEO_DW9714) += dw9714.o
obj-$(CONFIG_VIDEO_DW9768) += dw9768.o
obj-$(CONFIG_VIDEO_DW9807_VCM) += dw9807-vcm.o
@@ -142,6 +145,3 @@ obj-$(CONFIG_VIDEO_VPX3220) += vpx3220.o
obj-$(CONFIG_VIDEO_VS6624) += vs6624.o
obj-$(CONFIG_VIDEO_WM8739) += wm8739.o
obj-$(CONFIG_VIDEO_WM8775) += wm8775.o
-obj-$(CONFIG_VIDEO_DS90UB913) += ds90ub913.o
-obj-$(CONFIG_VIDEO_DS90UB953) += ds90ub953.o
-obj-$(CONFIG_VIDEO_DS90UB960) += ds90ub960.o
diff --git a/drivers/media/i2c/ds90ub913.c b/drivers/media/i2c/ds90ub913.c
index 60a07b5bace3..f7696bce7c77 100644
--- a/drivers/media/i2c/ds90ub913.c
+++ b/drivers/media/i2c/ds90ub913.c
@@ -91,6 +91,31 @@ static inline struct ub913_data *sd_to_ub913(struct v4l2_subdev *sd)
return container_of(sd, struct ub913_data, sd);
}
+struct ub913_format_info {
+ u32 incode;
+ u32 outcode;
+};
+
+static const struct ub913_format_info ub913_formats[] = {
+ /* Only RAW10 with 8-bit payload is supported at the moment */
+ { .incode = MEDIA_BUS_FMT_YUYV8_2X8, .outcode = MEDIA_BUS_FMT_YUYV8_1X16 },
+ { .incode = MEDIA_BUS_FMT_UYVY8_2X8, .outcode = MEDIA_BUS_FMT_UYVY8_1X16 },
+ { .incode = MEDIA_BUS_FMT_VYUY8_2X8, .outcode = MEDIA_BUS_FMT_VYUY8_1X16 },
+ { .incode = MEDIA_BUS_FMT_YVYU8_2X8, .outcode = MEDIA_BUS_FMT_YVYU8_1X16 },
+};
+
+static const struct ub913_format_info *ub913_find_format(u32 incode)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(ub913_formats); ++i) {
+ if (ub913_formats[i].incode == incode)
+ return &ub913_formats[i];
+ }
+
+ return NULL;
+}
+
static int ub913_read(const struct ub913_data *priv, u8 reg, u8 *val)
{
unsigned int v;
@@ -251,7 +276,7 @@ static int _ub913_set_routing(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state,
struct v4l2_subdev_krouting *routing)
{
- static const struct v4l2_mbus_framefmt format = {
+ static const struct v4l2_mbus_framefmt informat = {
.width = 640,
.height = 480,
.code = MEDIA_BUS_FMT_UYVY8_2X8,
@@ -261,6 +286,18 @@ static int _ub913_set_routing(struct v4l2_subdev *sd,
.quantization = V4L2_QUANTIZATION_LIM_RANGE,
.xfer_func = V4L2_XFER_FUNC_SRGB,
};
+ static const struct v4l2_mbus_framefmt outformat = {
+ .width = 640,
+ .height = 480,
+ .code = MEDIA_BUS_FMT_UYVY8_1X16,
+ .field = V4L2_FIELD_NONE,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .ycbcr_enc = V4L2_YCBCR_ENC_601,
+ .quantization = V4L2_QUANTIZATION_LIM_RANGE,
+ .xfer_func = V4L2_XFER_FUNC_SRGB,
+ };
+ struct v4l2_subdev_stream_configs *stream_configs;
+ unsigned int i;
int ret;
/*
@@ -276,10 +313,19 @@ static int _ub913_set_routing(struct v4l2_subdev *sd,
if (ret)
return ret;
- ret = v4l2_subdev_set_routing_with_fmt(sd, state, routing, &format);
+ ret = v4l2_subdev_set_routing(sd, state, routing);
if (ret)
return ret;
+ stream_configs = &state->stream_configs;
+
+ for (i = 0; i < stream_configs->num_configs; ++i) {
+ if (stream_configs->configs[i].pad == UB913_PAD_SINK)
+ stream_configs->configs[i].fmt = informat;
+ else
+ stream_configs->configs[i].fmt = outformat;
+ }
+
return 0;
}
@@ -361,15 +407,22 @@ static int ub913_set_fmt(struct v4l2_subdev *sd,
{
struct ub913_data *priv = sd_to_ub913(sd);
struct v4l2_mbus_framefmt *fmt;
+ const struct ub913_format_info *finfo;
if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE &&
priv->enabled_source_streams)
return -EBUSY;
- /* No transcoding, source and sink formats must match. */
+ /* Source format is fully defined by the sink format, so not settable */
if (format->pad == UB913_PAD_SOURCE)
return v4l2_subdev_get_fmt(sd, state, format);
+ finfo = ub913_find_format(format->format.code);
+ if (!finfo) {
+ finfo = &ub913_formats[0];
+ format->format.code = finfo->incode;
+ }
+
/* Set sink format */
fmt = v4l2_subdev_state_get_stream_format(state, format->pad,
format->stream);
@@ -378,12 +431,14 @@ static int ub913_set_fmt(struct v4l2_subdev *sd,
*fmt = format->format;
- /* Propagate to source format */
+ /* Propagate to source format, and adjust the mbus code */
fmt = v4l2_subdev_state_get_opposite_stream_format(state, format->pad,
format->stream);
if (!fmt)
return -EINVAL;
+ format->format.code = finfo->outcode;
+
*fmt = format->format;
return 0;
@@ -607,7 +662,7 @@ static int ub913_add_i2c_adapter(struct ub913_data *priv)
return 0;
ret = i2c_atr_add_adapter(priv->plat_data->atr, priv->plat_data->port,
- i2c_handle);
+ dev, i2c_handle);
fwnode_handle_put(i2c_handle);
diff --git a/drivers/media/i2c/ds90ub953.c b/drivers/media/i2c/ds90ub953.c
index 738652f2294b..6efe1460c976 100644
--- a/drivers/media/i2c/ds90ub953.c
+++ b/drivers/media/i2c/ds90ub953.c
@@ -146,8 +146,6 @@ struct ub953_data {
struct v4l2_subdev *source_sd;
u16 source_sd_pad;
- struct v4l2_ctrl_handler ctrl_handler;
-
u64 enabled_source_streams;
/* lock for register access */
@@ -229,8 +227,8 @@ static int ub953_select_ind_reg_block(struct ub953_data *priv, u8 block)
return 0;
}
-__maybe_unused static int ub953_read_ind(struct ub953_data *priv, u8 block,
- u8 reg, u8 *val)
+__maybe_unused
+static int ub953_read_ind(struct ub953_data *priv, u8 block, u8 reg, u8 *val)
{
unsigned int v;
int ret;
@@ -265,6 +263,7 @@ __maybe_unused static int ub953_read_ind(struct ub953_data *priv, u8 block,
return ret;
}
+__maybe_unused
static int ub953_write_ind(struct ub953_data *priv, u8 block, u8 reg, u8 val)
{
int ret;
@@ -273,14 +272,14 @@ static int ub953_write_ind(struct ub953_data *priv, u8 block, u8 reg, u8 val)
ret = ub953_select_ind_reg_block(priv, block);
if (ret)
- goto out_unlock;
+ goto out;
ret = regmap_write(priv->regmap, UB953_REG_IND_ACC_ADDR, reg);
if (ret) {
dev_err(&priv->client->dev,
"Write to IND_ACC_ADDR failed when writing %u:%x02x: %d\n",
block, reg, ret);
- goto out_unlock;
+ goto out;
}
ret = regmap_write(priv->regmap, UB953_REG_IND_ACC_DATA, val);
@@ -290,39 +289,7 @@ static int ub953_write_ind(struct ub953_data *priv, u8 block, u8 reg, u8 val)
block, reg, ret);
}
-out_unlock:
- mutex_unlock(&priv->reg_lock);
-
- return ret;
-}
-
-static int ub953_write_ind16(struct ub953_data *priv, u8 block, u8 reg, u16 val)
-{
- int ret;
-
- mutex_lock(&priv->reg_lock);
-
- ret = ub953_select_ind_reg_block(priv, block);
- if (ret)
- goto out_unlock;
-
- ret = regmap_write(priv->regmap, UB953_REG_IND_ACC_ADDR, reg);
- if (ret)
- goto out_unlock;
-
- ret = regmap_write(priv->regmap, UB953_REG_IND_ACC_DATA, val >> 8);
- if (ret)
- goto out_unlock;
-
- ret = regmap_write(priv->regmap, UB953_REG_IND_ACC_ADDR, reg + 1);
- if (ret)
- goto out_unlock;
-
- ret = regmap_write(priv->regmap, UB953_REG_IND_ACC_DATA, val & 0xff);
- if (ret)
- goto out_unlock;
-
-out_unlock:
+out:
mutex_unlock(&priv->reg_lock);
return ret;
@@ -754,124 +721,6 @@ static const struct media_entity_operations ub953_entity_ops = {
.link_validate = v4l2_subdev_link_validate,
};
-enum {
- TEST_PATTERN_DISABLED = 0,
- TEST_PATTERN_V_COLOR_BARS_1,
- TEST_PATTERN_V_COLOR_BARS_2,
- TEST_PATTERN_V_COLOR_BARS_4,
- TEST_PATTERN_V_COLOR_BARS_8,
-};
-
-static const char *const ub953_tpg_qmenu[] = {
- "Disabled",
- "1 vertical color bar",
- "2 vertical color bars",
- "4 vertical color bars",
- "8 vertical color bars",
-};
-
-static int ub953_enable_tpg(struct ub953_data *priv, int tpg_num)
-{
- struct v4l2_subdev *sd = &priv->sd;
- struct v4l2_subdev_state *state;
- struct v4l2_mbus_framefmt *fmt;
- u8 vbp, vfp;
- u16 blank_lines;
- u16 width;
- u16 height;
-
- u16 bytespp = 2; /* For MEDIA_BUS_FMT_UYVY8_1X16 */
- u8 cbars_idx = tpg_num - TEST_PATTERN_V_COLOR_BARS_1;
- u8 num_cbars = 1 << cbars_idx;
-
- u16 line_size; /* Line size [bytes] */
- u16 bar_size; /* cbar size [bytes] */
- u16 act_lpf; /* active lines/frame */
- u16 tot_lpf; /* tot lines/frame */
- u16 line_pd; /* Line period in 10-ns units */
-
- u16 fps = 30;
-
- vbp = 33;
- vfp = 10;
- blank_lines = vbp + vfp + 2; /* total blanking lines */
-
- state = v4l2_subdev_get_locked_active_state(sd);
-
- if (state->routing.num_routes != 1)
- return -EINVAL;
-
- fmt = v4l2_subdev_state_get_stream_format(state, UB953_PAD_SOURCE, 0);
- if (!fmt)
- return -EINVAL;
-
- if (fmt->code != MEDIA_BUS_FMT_UYVY8_1X16)
- return -EINVAL;
-
- width = fmt->width;
- height = fmt->height;
-
- line_size = width * bytespp;
- bar_size = line_size / num_cbars;
- act_lpf = height;
- tot_lpf = act_lpf + blank_lines;
- line_pd = 100000000 / fps / tot_lpf;
-
- ub953_write_ind(priv, UB953_IND_TARGET_PAT_GEN, UB953_IND_PGEN_CTL,
- UB953_IND_PGEN_CTL_PGEN_ENABLE);
-
- /* YUV422 8bit: 2 bytes/block, CSI-2 data type 0x1e */
- ub953_write_ind(priv, UB953_IND_TARGET_PAT_GEN, UB953_IND_PGEN_CFG,
- cbars_idx << 4 | 0x2);
- ub953_write_ind(priv, UB953_IND_TARGET_PAT_GEN, UB953_IND_PGEN_CSI_DI,
- 0x1e);
-
- ub953_write_ind16(priv, UB953_IND_TARGET_PAT_GEN,
- UB953_IND_PGEN_LINE_SIZE1, line_size);
- ub953_write_ind16(priv, UB953_IND_TARGET_PAT_GEN,
- UB953_IND_PGEN_BAR_SIZE1, bar_size);
- ub953_write_ind16(priv, UB953_IND_TARGET_PAT_GEN,
- UB953_IND_PGEN_ACT_LPF1, act_lpf);
- ub953_write_ind16(priv, UB953_IND_TARGET_PAT_GEN,
- UB953_IND_PGEN_TOT_LPF1, tot_lpf);
- ub953_write_ind16(priv, UB953_IND_TARGET_PAT_GEN,
- UB953_IND_PGEN_LINE_PD1, line_pd);
- ub953_write_ind(priv, UB953_IND_TARGET_PAT_GEN, UB953_IND_PGEN_VBP,
- vbp);
- ub953_write_ind(priv, UB953_IND_TARGET_PAT_GEN, UB953_IND_PGEN_VFP,
- vfp);
-
- return 0;
-}
-
-static void ub953_disable_tpg(struct ub953_data *priv)
-{
- ub953_write_ind(priv, UB953_IND_TARGET_PAT_GEN, UB953_IND_PGEN_CTL,
- 0x0);
-}
-
-static int ub953_s_ctrl(struct v4l2_ctrl *ctrl)
-{
- struct ub953_data *priv =
- container_of(ctrl->handler, struct ub953_data, ctrl_handler);
- int ret = 0;
-
- switch (ctrl->id) {
- case V4L2_CID_TEST_PATTERN:
- if (ctrl->val == 0)
- ub953_disable_tpg(priv);
- else
- ret = ub953_enable_tpg(priv, ctrl->val);
- break;
- }
-
- return ret;
-}
-
-static const struct v4l2_ctrl_ops ub953_ctrl_ops = {
- .s_ctrl = ub953_s_ctrl,
-};
-
static int ub953_notify_bound(struct v4l2_async_notifier *notifier,
struct v4l2_subdev *source_subdev,
struct v4l2_async_subdev *asd)
@@ -1241,7 +1090,7 @@ static int ub953_add_i2c_adapter(struct ub953_data *priv)
return 0;
ret = i2c_atr_add_adapter(priv->plat_data->atr, priv->plat_data->port,
- i2c_handle);
+ dev, i2c_handle);
fwnode_handle_put(i2c_handle);
@@ -1360,20 +1209,6 @@ static int ub953_subdev_init(struct ub953_data *priv)
v4l2_i2c_subdev_init(&priv->sd, priv->client, &ub953_subdev_ops);
- v4l2_ctrl_handler_init(&priv->ctrl_handler, 1);
- priv->sd.ctrl_handler = &priv->ctrl_handler;
-
- v4l2_ctrl_new_std_menu_items(&priv->ctrl_handler, &ub953_ctrl_ops,
- V4L2_CID_TEST_PATTERN,
- ARRAY_SIZE(ub953_tpg_qmenu) - 1, 0, 0,
- ub953_tpg_qmenu);
-
- if (priv->ctrl_handler.error) {
- ret = priv->ctrl_handler.error;
- dev_err_probe(dev, ret, "Failed to set up v4l2 controls\n");
- goto err_remove_ctrls;
- }
-
priv->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
V4L2_SUBDEV_FL_HAS_EVENTS | V4L2_SUBDEV_FL_STREAMS;
priv->sd.entity.function = MEDIA_ENT_F_VID_IF_BRIDGE;
@@ -1383,10 +1218,8 @@ static int ub953_subdev_init(struct ub953_data *priv)
priv->pads[1].flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_pads_init(&priv->sd.entity, 2, priv->pads);
- if (ret) {
- dev_err_probe(dev, ret, "Failed to init pads\n");
- goto err_remove_ctrls;
- }
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to init pads\n");
priv->sd.fwnode = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev),
UB953_PAD_SOURCE, 0,
@@ -1397,8 +1230,6 @@ static int ub953_subdev_init(struct ub953_data *priv)
goto err_entity_cleanup;
}
- priv->sd.state_lock = priv->sd.ctrl_handler->lock;
-
ret = v4l2_subdev_init_finalize(&priv->sd);
if (ret)
goto err_fwnode_put;
@@ -1426,8 +1257,6 @@ static int ub953_subdev_init(struct ub953_data *priv)
fwnode_handle_put(priv->sd.fwnode);
err_entity_cleanup:
media_entity_cleanup(&priv->sd.entity);
-err_remove_ctrls:
- v4l2_ctrl_handler_free(&priv->ctrl_handler);
return ret;
}
@@ -1439,7 +1268,6 @@ static void ub953_subdev_uninit(struct ub953_data *priv)
v4l2_subdev_cleanup(&priv->sd);
fwnode_handle_put(priv->sd.fwnode);
media_entity_cleanup(&priv->sd.entity);
- v4l2_ctrl_handler_free(&priv->ctrl_handler);
}
static int ub953_probe(struct i2c_client *client)
diff --git a/drivers/media/i2c/ds90ub960.c b/drivers/media/i2c/ds90ub960.c
index eb391f0259b3..1ae0c7cda7c7 100644
--- a/drivers/media/i2c/ds90ub960.c
+++ b/drivers/media/i2c/ds90ub960.c
@@ -6,6 +6,26 @@
* Copyright (c) 2023 Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
*/
+/*
+ * (Possible) TODOs
+ *
+ * - PM for serializer and remote peripherals. We need to manage:
+ * - VPOC
+ * - Power domain? Regulator? Somehow any remote device should be able to
+ * cause the VPOC to be turned on.
+ * - Link between the deserializer and the serializer
+ * - Related to VPOC management. We probably always want to turn on the VPOC
+ * and then enable the link.
+ * - Serializer's services: i2c, gpios, power
+ * - The serializer needs to resume before the remote peripherals can
+ * e.g. use the i2c.
+ * - How to handle gpios? Reserving a gpio essentially keeps the provider
+ * (serializer) always powered on.
+ * - Do we need a new bus for the FPD-Link? At the moment the serializers
+ * are children of the same i2c-adapter where the deserializer resides.
+ * - i2c-atr could be made embeddable instead of allocatable.
+ */
+
#include <linux/bitops.h>
#include <linux/clk.h>
#include <linux/delay.h>
@@ -26,8 +46,10 @@
#include <linux/workqueue.h>
#include <media/i2c/ds90ub9xx.h>
+#include <media/mipi-csi2.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
+#include <media/v4l2-fwnode.h>
#include <media/v4l2-subdev.h>
#define MHZ(v) ((u32)((v) * 1000000U))
@@ -39,7 +61,6 @@
#define UB960_MAX_NPORTS (UB960_MAX_RX_NPORTS + UB960_MAX_TX_NPORTS)
#define UB960_MAX_PORT_ALIASES 8
-#define UB960_MAX_POOL_ALIASES (UB960_MAX_RX_NPORTS * UB960_MAX_PORT_ALIASES)
#define UB960_NUM_BC_GPIOS 4
@@ -47,13 +68,13 @@
* Register map
*
* 0x00-0x32 Shared (UB960_SR)
- * 0x33-0x3A CSI-2 TX (per-port paged on DS90UB960, shared on 954) (UB960_TR)
- * 0x4C Shared (UB960_SR)
- * 0x4D-0x7F FPD-Link RX, per-port paged (UB960_RR)
- * 0xB0-0xBF Shared (UB960_SR)
- * 0xD0-0xDF FPD-Link RX, per-port paged (UB960_RR)
- * 0xF0-0xF5 Shared (UB960_SR)
- * 0xF8-0xFB Shared (UB960_SR)
+ * 0x33-0x3a CSI-2 TX (per-port paged on DS90UB960, shared on 954) (UB960_TR)
+ * 0x4c Shared (UB960_SR)
+ * 0x4d-0x7f FPD-Link RX, per-port paged (UB960_RR)
+ * 0xb0-0xbf Shared (UB960_SR)
+ * 0xd0-0xdf FPD-Link RX, per-port paged (UB960_RR)
+ * 0xf0-0xf5 Shared (UB960_SR)
+ * 0xf8-0xfb Shared (UB960_SR)
* All others Reserved
*
* Register prefixes:
@@ -78,12 +99,12 @@
#define UB960_SR_BCC_WDOG_CTL 0x07
#define UB960_SR_I2C_CTL1 0x08
#define UB960_SR_I2C_CTL2 0x09
-#define UB960_SR_SCL_HIGH_TIME 0x0A
-#define UB960_SR_SCL_LOW_TIME 0x0B
-#define UB960_SR_RX_PORT_CTL 0x0C
-#define UB960_SR_IO_CTL 0x0D
-#define UB960_SR_GPIO_PIN_STS 0x0E
-#define UB960_SR_GPIO_INPUT_CTL 0x0F
+#define UB960_SR_SCL_HIGH_TIME 0x0a
+#define UB960_SR_SCL_LOW_TIME 0x0b
+#define UB960_SR_RX_PORT_CTL 0x0c
+#define UB960_SR_IO_CTL 0x0d
+#define UB960_SR_GPIO_PIN_STS 0x0e
+#define UB960_SR_GPIO_INPUT_CTL 0x0f
#define UB960_SR_GPIO_PIN_CTL(n) (0x10 + (n)) /* n < UB960_NUM_GPIOS */
#define UB960_SR_GPIO_PIN_CTL_GPIO_OUT_SEL 5
#define UB960_SR_GPIO_PIN_CTL_GPIO_OUT_SRC_SHIFT 2
@@ -91,12 +112,12 @@
#define UB960_SR_FS_CTL 0x18
#define UB960_SR_FS_HIGH_TIME_1 0x19
-#define UB960_SR_FS_HIGH_TIME_0 0x1A
-#define UB960_SR_FS_LOW_TIME_1 0x1B
-#define UB960_SR_FS_LOW_TIME_0 0x1C
-#define UB960_SR_MAX_FRM_HI 0x1D
-#define UB960_SR_MAX_FRM_LO 0x1E
-#define UB960_SR_CSI_PLL_CTL 0x1F
+#define UB960_SR_FS_HIGH_TIME_0 0x1a
+#define UB960_SR_FS_LOW_TIME_1 0x1b
+#define UB960_SR_FS_LOW_TIME_0 0x1c
+#define UB960_SR_MAX_FRM_HI 0x1d
+#define UB960_SR_MAX_FRM_LO 0x1e
+#define UB960_SR_CSI_PLL_CTL 0x1f
#define UB960_SR_FWD_CTL1 0x20
#define UB960_SR_FWD_CTL1_PORT_DIS(n) BIT((n) + 4)
@@ -108,7 +129,6 @@
#define UB960_SR_INTERRUPT_CTL_INT_EN BIT(7)
#define UB960_SR_INTERRUPT_CTL_IE_CSI_TX0 BIT(4)
#define UB960_SR_INTERRUPT_CTL_IE_RX(n) BIT((n)) /* rxport[n] IRQ */
-#define UB960_SR_INTERRUPT_CTL_ALL 0x83 /* TODO 0x93 to enable CSI */
#define UB960_SR_INTERRUPT_STS 0x24
#define UB960_SR_INTERRUPT_STS_INT BIT(7)
@@ -120,10 +140,10 @@
#define UB960_SR_TS_LINE_HI 0x27
#define UB960_SR_TS_LINE_LO 0x28
#define UB960_SR_TS_STATUS 0x29
-#define UB960_SR_TIMESTAMP_P0_HI 0x2A
-#define UB960_SR_TIMESTAMP_P0_LO 0x2B
-#define UB960_SR_TIMESTAMP_P1_HI 0x2C
-#define UB960_SR_TIMESTAMP_P1_LO 0x2D
+#define UB960_SR_TIMESTAMP_P0_HI 0x2a
+#define UB960_SR_TIMESTAMP_P0_LO 0x2b
+#define UB960_SR_TIMESTAMP_P1_HI 0x2c
+#define UB960_SR_TIMESTAMP_P1_LO 0x2d
#define UB960_SR_CSI_PORT_SEL 0x32
@@ -141,7 +161,7 @@
#define UB960_TR_CSI_TEST_CTL 0x38
#define UB960_TR_CSI_TEST_PATT_HI 0x39
-#define UB960_TR_CSI_TEST_PATT_LO 0x3A
+#define UB960_TR_CSI_TEST_PATT_LO 0x3a
#define UB960_XR_SFILTER_CFG 0x41
#define UB960_XR_SFILTER_CFG_SFILTER_MAX_SHIFT 4
@@ -172,13 +192,13 @@
UB960_RR_BCC_STATUS_MASTER_TO | UB960_RR_BCC_STATUS_SLAVE_ERR | \
UB960_RR_BCC_STATUS_SLAVE_TO | UB960_RR_BCC_STATUS_RESP_ERR)
-#define UB960_RR_FPD3_CAP 0x4A
-#define UB960_RR_RAW_EMBED_DTYPE 0x4B
+#define UB960_RR_FPD3_CAP 0x4a
+#define UB960_RR_RAW_EMBED_DTYPE 0x4b
#define UB960_RR_RAW_EMBED_DTYPE_LINES_SHIFT 6
-#define UB960_SR_FPD3_PORT_SEL 0x4C
+#define UB960_SR_FPD3_PORT_SEL 0x4c
-#define UB960_RR_RX_PORT_STS1 0x4D
+#define UB960_RR_RX_PORT_STS1 0x4d
#define UB960_RR_RX_PORT_STS1_BCC_CRC_ERROR BIT(5)
#define UB960_RR_RX_PORT_STS1_LOCK_STS_CHG BIT(4)
#define UB960_RR_RX_PORT_STS1_BCC_SEQ_ERROR BIT(3)
@@ -190,7 +210,7 @@
UB960_RR_RX_PORT_STS1_BCC_SEQ_ERROR | \
UB960_RR_RX_PORT_STS1_PARITY_ERROR)
-#define UB960_RR_RX_PORT_STS2 0x4E
+#define UB960_RR_RX_PORT_STS2 0x4e
#define UB960_RR_RX_PORT_STS2_LINE_LEN_UNSTABLE BIT(7)
#define UB960_RR_RX_PORT_STS2_LINE_LEN_CHG BIT(6)
#define UB960_RR_RX_PORT_STS2_FPD3_ENCODE_ERROR BIT(5)
@@ -202,7 +222,7 @@
#define UB960_RR_RX_PORT_STS2_ERROR_MASK \
UB960_RR_RX_PORT_STS2_BUFFER_ERROR
-#define UB960_RR_RX_FREQ_HIGH 0x4F
+#define UB960_RR_RX_FREQ_HIGH 0x4f
#define UB960_RR_RX_FREQ_LOW 0x50
#define UB960_RR_SENSOR_STS_0 0x51
#define UB960_RR_SENSOR_STS_1 0x52
@@ -217,18 +237,18 @@
#define UB960_RR_BCC_CONFIG_BC_FREQ_SEL_MASK GENMASK(2, 0)
#define UB960_RR_DATAPATH_CTL1 0x59
-#define UB960_RR_DATAPATH_CTL2 0x5A
-#define UB960_RR_SER_ID 0x5B
-#define UB960_RR_SER_ALIAS_ID 0x5C
+#define UB960_RR_DATAPATH_CTL2 0x5a
+#define UB960_RR_SER_ID 0x5b
+#define UB960_RR_SER_ALIAS_ID 0x5c
/* For these two register sets: n < UB960_MAX_PORT_ALIASES */
-#define UB960_RR_SLAVE_ID(n) (0x5D + (n))
+#define UB960_RR_SLAVE_ID(n) (0x5d + (n))
#define UB960_RR_SLAVE_ALIAS(n) (0x65 + (n))
-#define UB960_RR_PORT_CONFIG 0x6D
+#define UB960_RR_PORT_CONFIG 0x6d
#define UB960_RR_PORT_CONFIG_FPD3_MODE_MASK GENMASK(1, 0)
-#define UB960_RR_BC_GPIO_CTL(n) (0x6E + (n)) /* n < 2 */
+#define UB960_RR_BC_GPIO_CTL(n) (0x6e + (n)) /* n < 2 */
#define UB960_RR_RAW10_ID 0x70
#define UB960_RR_RAW10_ID_VC_SHIFT 6
#define UB960_RR_RAW10_ID_DT_SHIFT 0
@@ -245,7 +265,7 @@
#define UB960_RR_MAILBOX_1 0x78
#define UB960_RR_MAILBOX_2 0x79
-#define UB960_RR_CSI_RX_STS 0x7A
+#define UB960_RR_CSI_RX_STS 0x7a
#define UB960_RR_CSI_RX_STS_LENGTH_ERR BIT(3)
#define UB960_RR_CSI_RX_STS_CKSUM_ERR BIT(2)
#define UB960_RR_CSI_RX_STS_ECC2_ERR BIT(1)
@@ -254,17 +274,17 @@
(UB960_RR_CSI_RX_STS_LENGTH_ERR | UB960_RR_CSI_RX_STS_CKSUM_ERR | \
UB960_RR_CSI_RX_STS_ECC2_ERR | UB960_RR_CSI_RX_STS_ECC1_ERR)
-#define UB960_RR_CSI_ERR_COUNTER 0x7B
-#define UB960_RR_PORT_CONFIG2 0x7C
+#define UB960_RR_CSI_ERR_COUNTER 0x7b
+#define UB960_RR_PORT_CONFIG2 0x7c
#define UB960_RR_PORT_CONFIG2_RAW10_8BIT_CTL_MASK GENMASK(7, 6)
#define UB960_RR_PORT_CONFIG2_RAW10_8BIT_CTL_SHIFT 6
#define UB960_RR_PORT_CONFIG2_LV_POL_LOW BIT(1)
#define UB960_RR_PORT_CONFIG2_FV_POL_LOW BIT(0)
-#define UB960_RR_PORT_PASS_CTL 0x7D
-#define UB960_RR_SEN_INT_RISE_CTL 0x7E
-#define UB960_RR_SEN_INT_FALL_CTL 0x7F
+#define UB960_RR_PORT_PASS_CTL 0x7d
+#define UB960_RR_SEN_INT_RISE_CTL 0x7e
+#define UB960_RR_SEN_INT_FALL_CTL 0x7f
#define UB960_SR_CSI_FRAME_COUNT_HI(n) (0x90 + 8 * (n))
#define UB960_SR_CSI_FRAME_COUNT_LO(n) (0x91 + 8 * (n))
@@ -275,60 +295,60 @@
#define UB960_SR_CSI_LINE_ERR_COUNT_HI(n) (0x96 + 8 * (n))
#define UB960_SR_CSI_LINE_ERR_COUNT_LO(n) (0x97 + 8 * (n))
-#define UB960_XR_REFCLK_FREQ 0xA5 /* UB960 */
+#define UB960_XR_REFCLK_FREQ 0xa5 /* UB960 */
#define UB960_RR_VC_ID_MAP(x) (0xa0 + (x)) /* UB9702 */
-#define UB960_SR_IND_ACC_CTL 0xB0
+#define UB960_SR_IND_ACC_CTL 0xb0
#define UB960_SR_IND_ACC_CTL_IA_AUTO_INC BIT(1)
-#define UB960_SR_IND_ACC_ADDR 0xB1
-#define UB960_SR_IND_ACC_DATA 0xB2
-#define UB960_SR_BIST_CONTROL 0xB3
-#define UB960_SR_MODE_IDX_STS 0xB8
-#define UB960_SR_LINK_ERROR_COUNT 0xB9
-#define UB960_SR_FPD3_ENC_CTL 0xBA
-#define UB960_SR_FV_MIN_TIME 0xBC
-#define UB960_SR_GPIO_PD_CTL 0xBE
+#define UB960_SR_IND_ACC_ADDR 0xb1
+#define UB960_SR_IND_ACC_DATA 0xb2
+#define UB960_SR_BIST_CONTROL 0xb3
+#define UB960_SR_MODE_IDX_STS 0xb8
+#define UB960_SR_LINK_ERROR_COUNT 0xb9
+#define UB960_SR_FPD3_ENC_CTL 0xba
+#define UB960_SR_FV_MIN_TIME 0xbc
+#define UB960_SR_GPIO_PD_CTL 0xbe
#define UB960_SR_FPD_RATE_CFG 0xc2 /* UB9702 */
#define UB960_SR_CSI_PLL_DIV 0xc9 /* UB9702 */
-#define UB960_RR_PORT_DEBUG 0xD0
-#define UB960_RR_AEQ_CTL2 0xD2
+#define UB960_RR_PORT_DEBUG 0xd0
+#define UB960_RR_AEQ_CTL2 0xd2
#define UB960_RR_AEQ_CTL2_SET_AEQ_FLOOR BIT(2)
-#define UB960_RR_AEQ_STATUS 0xD3
+#define UB960_RR_AEQ_STATUS 0xd3
#define UB960_RR_AEQ_STATUS_STATUS_2 GENMASK(5, 3)
#define UB960_RR_AEQ_STATUS_STATUS_1 GENMASK(2, 0)
-#define UB960_RR_AEQ_BYPASS 0xD4
+#define UB960_RR_AEQ_BYPASS 0xd4
#define UB960_RR_AEQ_BYPASS_EQ_STAGE1_VALUE_SHIFT 5
#define UB960_RR_AEQ_BYPASS_EQ_STAGE1_VALUE_MASK GENMASK(7, 5)
#define UB960_RR_AEQ_BYPASS_EQ_STAGE2_VALUE_SHIFT 1
#define UB960_RR_AEQ_BYPASS_EQ_STAGE2_VALUE_MASK GENMASK(3, 1)
#define UB960_RR_AEQ_BYPASS_ENABLE BIT(0)
-#define UB960_RR_AEQ_MIN_MAX 0xD5
+#define UB960_RR_AEQ_MIN_MAX 0xd5
#define UB960_RR_AEQ_MIN_MAX_AEQ_MAX_SHIFT 4
#define UB960_RR_AEQ_MIN_MAX_AEQ_FLOOR_SHIFT 0
-#define UB960_RR_SFILTER_STS_0 0xD6
-#define UB960_RR_SFILTER_STS_1 0xD7
-#define UB960_RR_PORT_ICR_HI 0xD8
-#define UB960_RR_PORT_ICR_LO 0xD9
-#define UB960_RR_PORT_ISR_HI 0xDA
-#define UB960_RR_PORT_ISR_LO 0xDB
-#define UB960_RR_FC_GPIO_STS 0xDC
-#define UB960_RR_FC_GPIO_ICR 0xDD
-#define UB960_RR_SEN_INT_RISE_STS 0xDE
-#define UB960_RR_SEN_INT_FALL_STS 0xDF
+#define UB960_RR_SFILTER_STS_0 0xd6
+#define UB960_RR_SFILTER_STS_1 0xd7
+#define UB960_RR_PORT_ICR_HI 0xd8
+#define UB960_RR_PORT_ICR_LO 0xd9
+#define UB960_RR_PORT_ISR_HI 0xda
+#define UB960_RR_PORT_ISR_LO 0xdb
+#define UB960_RR_FC_GPIO_STS 0xdc
+#define UB960_RR_FC_GPIO_ICR 0xdd
+#define UB960_RR_SEN_INT_RISE_STS 0xde
+#define UB960_RR_SEN_INT_FALL_STS 0xdf
#define UB960_RR_CHANNEL_MODE 0xe4 /* UB9702 */
-#define UB960_SR_FPD3_RX_ID(n) (0xF0 + (n))
+#define UB960_SR_FPD3_RX_ID(n) (0xf0 + (n))
-#define UB960_SR_I2C_RX_ID(n) (0xF8 + (n)) /* < UB960_FPD_RX_NPORTS */
+#define UB960_SR_I2C_RX_ID(n) (0xf8 + (n)) /* < UB960_FPD_RX_NPORTS */
/* Indirect register blocks */
#define UB960_IND_TARGET_PAT_GEN 0x00
@@ -349,12 +369,12 @@
#define UB960_IR_PGEN_BAR_SIZE0 0x07
#define UB960_IR_PGEN_ACT_LPF1 0x08
#define UB960_IR_PGEN_ACT_LPF0 0x09
-#define UB960_IR_PGEN_TOT_LPF1 0x0A
-#define UB960_IR_PGEN_TOT_LPF0 0x0B
-#define UB960_IR_PGEN_LINE_PD1 0x0C
-#define UB960_IR_PGEN_LINE_PD0 0x0D
-#define UB960_IR_PGEN_VBP 0x0E
-#define UB960_IR_PGEN_VFP 0x0F
+#define UB960_IR_PGEN_TOT_LPF1 0x0a
+#define UB960_IR_PGEN_TOT_LPF0 0x0b
+#define UB960_IR_PGEN_LINE_PD1 0x0c
+#define UB960_IR_PGEN_LINE_PD0 0x0d
+#define UB960_IR_PGEN_VBP 0x0e
+#define UB960_IR_PGEN_VFP 0x0f
#define UB960_IR_PGEN_COLOR(n) (0x10 + (n)) /* n < 15 */
#define UB960_IR_RX_ANA_STROBE_SET_CLK 0x08
@@ -368,16 +388,16 @@
/* EQ related */
#define UB960_MIN_AEQ_STROBE_POS -7
-#define UB960_MAX_AEQ_STROBE_POS 7
+#define UB960_MAX_AEQ_STROBE_POS 7
#define UB960_MANUAL_STROBE_EXTRA_DELAY 6
#define UB960_MIN_MANUAL_STROBE_POS -(7 + UB960_MANUAL_STROBE_EXTRA_DELAY)
-#define UB960_MAX_MANUAL_STROBE_POS (7 + UB960_MANUAL_STROBE_EXTRA_DELAY)
-#define UB960_NUM_MANUAL_STROBE_POS (UB960_MAX_MANUAL_STROBE_POS - UB960_MIN_MANUAL_STROBE_POS + 1)
+#define UB960_MAX_MANUAL_STROBE_POS (7 + UB960_MANUAL_STROBE_EXTRA_DELAY)
+#define UB960_NUM_MANUAL_STROBE_POS (UB960_MAX_MANUAL_STROBE_POS - UB960_MIN_MANUAL_STROBE_POS + 1)
-#define UB960_MIN_EQ_LEVEL 0
-#define UB960_MAX_EQ_LEVEL 14
+#define UB960_MIN_EQ_LEVEL 0
+#define UB960_MAX_EQ_LEVEL 14
#define UB960_NUM_EQ_LEVELS (UB960_MAX_EQ_LEVEL - UB960_MIN_EQ_LEVEL + 1)
struct ub960_hw_data {
@@ -407,17 +427,23 @@ struct ub960_rxport {
struct ub960_data *priv;
u8 nport; /* RX port number, and index in priv->rxport[] */
- struct v4l2_subdev *source_sd; /* Connected subdev */
- u16 source_sd_pad;
- struct fwnode_handle *source_ep_fwnode;
+ struct {
+ struct v4l2_subdev *sd;
+ u16 pad;
+ struct fwnode_handle *ep_fwnode;
+ } source;
+
+ /* Serializer */
+ struct {
+ struct fwnode_handle *fwnode;
+ struct i2c_client *client;
+ unsigned short alias; /* I2C alias (lower 7 bits) */
+ struct ds90ub9xx_platform_data pdata;
+ } ser;
enum ub960_rxport_mode rx_mode;
enum ub960_rxport_cdr cdr_mode;
- struct fwnode_handle *remote_fwnode; /* 'serializer' fwnode */
- struct i2c_client *ser_client; /* Serializer */
- unsigned short ser_alias; /* Serializer i2c alias (lower 7 bits) */
-
u8 lv_fv_pol; /* LV and FV polarities */
struct regulator *vpoc;
@@ -439,8 +465,6 @@ struct ub960_rxport {
} manual;
};
} eq;
-
- struct ds90ub9xx_platform_data ser_platform_data;
};
struct ub960_asd {
@@ -463,20 +487,12 @@ struct ub960_txport {
struct atr_alias_table_entry {
u16 alias_id; /* Alias ID from DT */
- bool reserved;
+ bool in_use;
u8 nport;
u8 slave_id; /* i2c client's local i2c address */
u8 port_reg_idx;
};
-struct atr_alias_table {
- /* Protects fields in this struct */
- struct mutex lock;
-
- size_t num_entries;
- struct atr_alias_table_entry *entries;
-};
-
struct ub960_data {
const struct ub960_hw_data *hw_data;
struct i2c_client *client; /* for shared local registers */
@@ -491,7 +507,6 @@ struct ub960_data {
struct gpio_desc *pd_gpio;
struct delayed_work poll_work;
- struct i2c_atr *atr;
struct ub960_rxport *rxports[UB960_MAX_RX_NPORTS];
struct ub960_txport *txports[UB960_MAX_TX_NPORTS];
@@ -504,15 +519,20 @@ struct ub960_data {
u32 tx_data_rate; /* Nominal data rate (Gb/s) */
s64 tx_link_freq[1];
- struct atr_alias_table atr_alias_table;
-
- u8 current_read_rxport;
- u8 current_write_rxport_mask;
+ struct {
+ struct i2c_atr *atr;
- u8 current_read_csiport;
- u8 current_write_csiport_mask;
+ /* Protects fields below in this struct */
+ struct mutex lock;
+ size_t num_aliases;
+ struct atr_alias_table_entry *aliases;
+ } atr;
- u8 current_indirect_target;
+ struct {
+ u8 rxport;
+ u8 txport;
+ u8 indirect_target;
+ } reg_current;
bool streaming;
@@ -529,29 +549,11 @@ struct ub960_data {
} strobe;
};
-static void ub960_reset(struct ub960_data *priv, bool reset_regs);
-
static inline struct ub960_data *sd_to_ub960(struct v4l2_subdev *sd)
{
return container_of(sd, struct ub960_data, sd);
}
-enum {
- TEST_PATTERN_DISABLED = 0,
- TEST_PATTERN_V_COLOR_BARS_1,
- TEST_PATTERN_V_COLOR_BARS_2,
- TEST_PATTERN_V_COLOR_BARS_4,
- TEST_PATTERN_V_COLOR_BARS_8,
-};
-
-static const char *const ub960_tpg_qmenu[] = {
- "Disabled",
- "1 vertical color bar",
- "2 vertical color bars",
- "4 vertical color bars",
- "8 vertical color bars",
-};
-
static inline bool ub960_pad_is_sink(struct ub960_data *priv, u32 pad)
{
return pad < priv->hw_data->num_rxports;
@@ -559,8 +561,7 @@ static inline bool ub960_pad_is_sink(struct ub960_data *priv, u32 pad)
static inline bool ub960_pad_is_source(struct ub960_data *priv, u32 pad)
{
- return pad >= priv->hw_data->num_rxports &&
- pad < (priv->hw_data->num_rxports + priv->hw_data->num_txports);
+ return pad >= priv->hw_data->num_rxports;
}
static inline unsigned int ub960_pad_to_port(struct ub960_data *priv, u32 pad)
@@ -579,20 +580,15 @@ struct ub960_format_info {
};
static const struct ub960_format_info ub960_formats[] = {
- { .code = MEDIA_BUS_FMT_YUYV8_1X16, .bpp = 16, .datatype = 0x1e, },
- { .code = MEDIA_BUS_FMT_UYVY8_1X16, .bpp = 16, .datatype = 0x1e, },
- { .code = MEDIA_BUS_FMT_VYUY8_1X16, .bpp = 16, .datatype = 0x1e, },
- { .code = MEDIA_BUS_FMT_YVYU8_1X16, .bpp = 16, .datatype = 0x1e, },
-
- /* Legacy */
- { .code = MEDIA_BUS_FMT_YUYV8_2X8, .bpp = 16, .datatype = 0x1e, },
- { .code = MEDIA_BUS_FMT_UYVY8_2X8, .bpp = 16, .datatype = 0x1e, },
- { .code = MEDIA_BUS_FMT_VYUY8_2X8, .bpp = 16, .datatype = 0x1e, },
- { .code = MEDIA_BUS_FMT_YVYU8_2X8, .bpp = 16, .datatype = 0x1e, },
-
- /* RAW */
- { .code = MEDIA_BUS_FMT_SBGGR12_1X12, .bpp = 12, .datatype = 0x2c, },
- { .code = MEDIA_BUS_FMT_SRGGB12_1X12, .bpp = 12, .datatype = 0x2c, },
+ { .code = MEDIA_BUS_FMT_YUYV8_1X16, .bpp = 16, .datatype = MIPI_CSI2_DT_YUV422_8B, },
+ { .code = MEDIA_BUS_FMT_UYVY8_1X16, .bpp = 16, .datatype = MIPI_CSI2_DT_YUV422_8B, },
+ { .code = MEDIA_BUS_FMT_VYUY8_1X16, .bpp = 16, .datatype = MIPI_CSI2_DT_YUV422_8B, },
+ { .code = MEDIA_BUS_FMT_YVYU8_1X16, .bpp = 16, .datatype = MIPI_CSI2_DT_YUV422_8B, },
+
+ { .code = MEDIA_BUS_FMT_SBGGR12_1X12, .bpp = 12, .datatype = MIPI_CSI2_DT_RAW12, },
+ { .code = MEDIA_BUS_FMT_SGBRG12_1X12, .bpp = 12, .datatype = MIPI_CSI2_DT_RAW12, },
+ { .code = MEDIA_BUS_FMT_SGRBG12_1X12, .bpp = 12, .datatype = MIPI_CSI2_DT_RAW12, },
+ { .code = MEDIA_BUS_FMT_SRGGB12_1X12, .bpp = 12, .datatype = MIPI_CSI2_DT_RAW12, },
};
static const struct ub960_format_info *ub960_find_format(u32 code)
@@ -668,13 +664,44 @@ static int ub960_update_bits(struct ub960_data *priv, u8 reg, u8 mask, u8 val)
return ret;
}
-static int _ub960_rxport_select(struct ub960_data *priv, u8 nport)
+static int ub960_read16(struct ub960_data *priv, u8 reg, u16 *val)
+{
+ struct device *dev = &priv->client->dev;
+ unsigned int v1, v2;
+ int ret;
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = regmap_read(priv->regmap, reg, &v1);
+ if (ret) {
+ dev_err(dev, "%s: cannot read register 0x%02x (%d)!\n",
+ __func__, reg, ret);
+ goto out_unlock;
+ }
+
+ ret = regmap_read(priv->regmap, reg + 1, &v2);
+ if (ret) {
+ dev_err(dev, "%s: cannot read register 0x%02x (%d)!\n",
+ __func__, reg + 1, ret);
+ goto out_unlock;
+ }
+
+ *val = (v1 << 8) | v2;
+
+out_unlock:
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+static int ub960_rxport_select(struct ub960_data *priv, u8 nport)
{
struct device *dev = &priv->client->dev;
int ret;
- if (priv->current_read_rxport == nport &&
- priv->current_write_rxport_mask == BIT(nport))
+ lockdep_assert_held(&priv->reg_lock);
+
+ if (priv->reg_current.rxport == nport)
return 0;
ret = regmap_write(priv->regmap, UB960_SR_FPD3_PORT_SEL,
@@ -685,8 +712,7 @@ static int _ub960_rxport_select(struct ub960_data *priv, u8 nport)
return ret;
}
- priv->current_read_rxport = nport;
- priv->current_write_rxport_mask = BIT(nport);
+ priv->reg_current.rxport = nport;
return 0;
}
@@ -699,7 +725,9 @@ static int ub960_rxport_read(struct ub960_data *priv, u8 nport, u8 reg, u8 *val)
mutex_lock(&priv->reg_lock);
- _ub960_rxport_select(priv, nport);
+ ret = ub960_rxport_select(priv, nport);
+ if (ret)
+ goto out_unlock;
ret = regmap_read(priv->regmap, reg, &v);
if (ret) {
@@ -723,13 +751,16 @@ static int ub960_rxport_write(struct ub960_data *priv, u8 nport, u8 reg, u8 val)
mutex_lock(&priv->reg_lock);
- _ub960_rxport_select(priv, nport);
+ ret = ub960_rxport_select(priv, nport);
+ if (ret)
+ goto out_unlock;
ret = regmap_write(priv->regmap, reg, val);
if (ret)
dev_err(dev, "%s: cannot write register 0x%02x (%d)!\n",
__func__, reg, ret);
+out_unlock:
mutex_unlock(&priv->reg_lock);
return ret;
@@ -743,43 +774,81 @@ static int ub960_rxport_update_bits(struct ub960_data *priv, u8 nport, u8 reg,
mutex_lock(&priv->reg_lock);
- _ub960_rxport_select(priv, nport);
+ ret = ub960_rxport_select(priv, nport);
+ if (ret)
+ goto out_unlock;
ret = regmap_update_bits(priv->regmap, reg, mask, val);
if (ret)
dev_err(dev, "%s: cannot update register 0x%02x (%d)!\n",
__func__, reg, ret);
+out_unlock:
mutex_unlock(&priv->reg_lock);
return ret;
}
-static int _ub960_csiport_select(struct ub960_data *priv, u8 nport)
+static int ub960_rxport_read16(struct ub960_data *priv, u8 nport, u8 reg,
+ u16 *val)
{
struct device *dev = &priv->client->dev;
+ unsigned int v1;
+ unsigned int v2;
int ret;
- if (priv->current_read_csiport == nport &&
- priv->current_write_csiport_mask == BIT(nport))
+ mutex_lock(&priv->reg_lock);
+
+ ret = ub960_rxport_select(priv, nport);
+ if (ret)
+ goto out_unlock;
+
+ ret = regmap_read(priv->regmap, reg, &v1);
+ if (ret) {
+ dev_err(dev, "%s: cannot read register 0x%02x (%d)!\n",
+ __func__, reg, ret);
+ goto out_unlock;
+ }
+
+ ret = regmap_read(priv->regmap, reg + 1, &v2);
+ if (ret) {
+ dev_err(dev, "%s: cannot read register 0x%02x (%d)!\n",
+ __func__, reg + 1, ret);
+ goto out_unlock;
+ }
+
+ *val = (v1 << 8) | v2;
+
+out_unlock:
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+static int ub960_txport_select(struct ub960_data *priv, u8 nport)
+{
+ struct device *dev = &priv->client->dev;
+ int ret;
+
+ lockdep_assert_held(&priv->reg_lock);
+
+ if (priv->reg_current.txport == nport)
return 0;
ret = regmap_write(priv->regmap, UB960_SR_CSI_PORT_SEL,
(nport << 4) | BIT(nport));
if (ret) {
- dev_err(dev, "%s: cannot select csi port %d (%d)!\n", __func__,
+ dev_err(dev, "%s: cannot select tx port %d (%d)!\n", __func__,
nport, ret);
return ret;
}
- priv->current_read_csiport = nport;
- priv->current_write_csiport_mask = BIT(nport);
+ priv->reg_current.txport = nport;
return 0;
}
-static int ub960_csiport_read(struct ub960_data *priv, u8 nport, u8 reg,
- u8 *val)
+static int ub960_txport_read(struct ub960_data *priv, u8 nport, u8 reg, u8 *val)
{
struct device *dev = &priv->client->dev;
unsigned int v;
@@ -787,7 +856,9 @@ static int ub960_csiport_read(struct ub960_data *priv, u8 nport, u8 reg,
mutex_lock(&priv->reg_lock);
- _ub960_csiport_select(priv, nport);
+ ret = ub960_txport_select(priv, nport);
+ if (ret)
+ goto out_unlock;
ret = regmap_read(priv->regmap, reg, &v);
if (ret) {
@@ -804,52 +875,59 @@ static int ub960_csiport_read(struct ub960_data *priv, u8 nport, u8 reg,
return ret;
}
-static int ub960_csiport_write(struct ub960_data *priv, u8 nport, u8 reg,
- u8 val)
+static int ub960_txport_write(struct ub960_data *priv, u8 nport, u8 reg, u8 val)
{
struct device *dev = &priv->client->dev;
int ret;
mutex_lock(&priv->reg_lock);
- _ub960_csiport_select(priv, nport);
+ ret = ub960_txport_select(priv, nport);
+ if (ret)
+ goto out_unlock;
ret = regmap_write(priv->regmap, reg, val);
if (ret)
dev_err(dev, "%s: cannot write register 0x%02x (%d)!\n",
__func__, reg, ret);
+out_unlock:
mutex_unlock(&priv->reg_lock);
return ret;
}
-static int ub960_csiport_update_bits(struct ub960_data *priv, u8 nport, u8 reg,
- u8 mask, u8 val)
+static int ub960_txport_update_bits(struct ub960_data *priv, u8 nport, u8 reg,
+ u8 mask, u8 val)
{
struct device *dev = &priv->client->dev;
int ret;
mutex_lock(&priv->reg_lock);
- _ub960_csiport_select(priv, nport);
+ ret = ub960_txport_select(priv, nport);
+ if (ret)
+ goto out_unlock;
ret = regmap_update_bits(priv->regmap, reg, mask, val);
if (ret)
dev_err(dev, "%s: cannot update register 0x%02x (%d)!\n",
__func__, reg, ret);
+out_unlock:
mutex_unlock(&priv->reg_lock);
return ret;
}
-static int _ub960_select_ind_reg_block(struct ub960_data *priv, u8 block)
+static int ub960_select_ind_reg_block(struct ub960_data *priv, u8 block)
{
struct device *dev = &priv->client->dev;
int ret;
- if (priv->current_indirect_target == block)
+ lockdep_assert_held(&priv->reg_lock);
+
+ if (priv->reg_current.indirect_target == block)
return 0;
ret = regmap_write(priv->regmap, UB960_SR_IND_ACC_CTL, block << 2);
@@ -859,25 +937,26 @@ static int _ub960_select_ind_reg_block(struct ub960_data *priv, u8 block)
return ret;
}
- priv->current_indirect_target = block;
+ priv->reg_current.indirect_target = block;
return 0;
}
static int ub960_read_ind(struct ub960_data *priv, u8 block, u8 reg, u8 *val)
{
+ struct device *dev = &priv->client->dev;
unsigned int v;
int ret;
mutex_lock(&priv->reg_lock);
- ret = _ub960_select_ind_reg_block(priv, block);
+ ret = ub960_select_ind_reg_block(priv, block);
if (ret)
goto out_unlock;
ret = regmap_write(priv->regmap, UB960_SR_IND_ACC_ADDR, reg);
if (ret) {
- dev_err(&priv->client->dev,
+ dev_err(dev,
"Write to IND_ACC_ADDR failed when reading %u:%x02x: %d\n",
block, reg, ret);
goto out_unlock;
@@ -885,7 +964,7 @@ static int ub960_read_ind(struct ub960_data *priv, u8 block, u8 reg, u8 *val)
ret = regmap_read(priv->regmap, UB960_SR_IND_ACC_DATA, &v);
if (ret) {
- dev_err(&priv->client->dev,
+ dev_err(dev,
"Write to IND_ACC_DATA failed when reading %u:%x02x: %d\n",
block, reg, ret);
goto out_unlock;
@@ -901,17 +980,18 @@ static int ub960_read_ind(struct ub960_data *priv, u8 block, u8 reg, u8 *val)
static int ub960_write_ind(struct ub960_data *priv, u8 block, u8 reg, u8 val)
{
+ struct device *dev = &priv->client->dev;
int ret;
mutex_lock(&priv->reg_lock);
- ret = _ub960_select_ind_reg_block(priv, block);
+ ret = ub960_select_ind_reg_block(priv, block);
if (ret)
goto out_unlock;
ret = regmap_write(priv->regmap, UB960_SR_IND_ACC_ADDR, reg);
if (ret) {
- dev_err(&priv->client->dev,
+ dev_err(dev,
"Write to IND_ACC_ADDR failed when writing %u:%x02x: %d\n",
block, reg, ret);
goto out_unlock;
@@ -919,8 +999,8 @@ static int ub960_write_ind(struct ub960_data *priv, u8 block, u8 reg, u8 val)
ret = regmap_write(priv->regmap, UB960_SR_IND_ACC_DATA, val);
if (ret) {
- dev_err(&priv->client->dev,
- "Write to IND_ACC_DATA failed when writing %u:%x02x\n: %d\n",
+ dev_err(dev,
+ "Write to IND_ACC_DATA failed when writing %u:%x02x: %d\n",
block, reg, ret);
goto out_unlock;
}
@@ -931,52 +1011,21 @@ static int ub960_write_ind(struct ub960_data *priv, u8 block, u8 reg, u8 val)
return ret;
}
-static int ub960_write_ind16(struct ub960_data *priv, u8 block, u8 reg, u16 val)
-{
- int ret;
-
- mutex_lock(&priv->reg_lock);
-
- ret = _ub960_select_ind_reg_block(priv, block);
- if (ret)
- goto out_unlock;
-
- ret = regmap_write(priv->regmap, UB960_SR_IND_ACC_ADDR, reg);
- if (ret)
- goto out_unlock;
-
- ret = regmap_write(priv->regmap, UB960_SR_IND_ACC_DATA, val >> 8);
- if (ret)
- goto out_unlock;
-
- ret = regmap_write(priv->regmap, UB960_SR_IND_ACC_ADDR, reg + 1);
- if (ret)
- goto out_unlock;
-
- ret = regmap_write(priv->regmap, UB960_SR_IND_ACC_DATA, val & 0xff);
- if (ret)
- goto out_unlock;
-
-out_unlock:
- mutex_unlock(&priv->reg_lock);
-
- return ret;
-}
-
static int ub960_ind_update_bits(struct ub960_data *priv, u8 block, u8 reg,
u8 mask, u8 val)
{
+ struct device *dev = &priv->client->dev;
int ret;
mutex_lock(&priv->reg_lock);
- ret = _ub960_select_ind_reg_block(priv, block);
+ ret = ub960_select_ind_reg_block(priv, block);
if (ret)
goto out_unlock;
ret = regmap_write(priv->regmap, UB960_SR_IND_ACC_ADDR, reg);
if (ret) {
- dev_err(&priv->client->dev,
+ dev_err(dev,
"Write to IND_ACC_ADDR failed when updating %u:%x02x: %d\n",
block, reg, ret);
goto out_unlock;
@@ -985,7 +1034,7 @@ static int ub960_ind_update_bits(struct ub960_data *priv, u8 block, u8 reg,
ret = regmap_update_bits(priv->regmap, UB960_SR_IND_ACC_DATA, mask,
val);
if (ret) {
- dev_err(&priv->client->dev,
+ dev_err(dev,
"Write to IND_ACC_DATA failed when updating %u:%x02x: %d\n",
block, reg, ret);
goto out_unlock;
@@ -1015,9 +1064,7 @@ static int ub960_atr_attach_client(struct i2c_atr *atr, u32 chan_id,
int ret = 0;
u8 port_reg_idx_mask = 0;
- dev_dbg(dev, "rx%u: %s\n", chan_id, __func__);
-
- mutex_lock(&priv->atr_alias_table.lock);
+ mutex_lock(&priv->atr.lock);
/*
* Go through the alias table and:
@@ -1025,15 +1072,15 @@ static int ub960_atr_attach_client(struct i2c_atr *atr, u32 chan_id,
* 2. Construct a bitmask of port's used alias entries
*/
- for (pool_idx = 0; pool_idx < priv->atr_alias_table.num_entries; pool_idx++) {
+ for (pool_idx = 0; pool_idx < priv->atr.num_aliases; ++pool_idx) {
struct atr_alias_table_entry *e;
- e = &priv->atr_alias_table.entries[pool_idx];
+ e = &priv->atr.aliases[pool_idx];
- if (!entry && !e->reserved)
+ if (!entry && !e->in_use)
entry = e;
- if (e->reserved && e->nport == rxport->nport)
+ if (e->in_use && e->nport == rxport->nport)
port_reg_idx_mask |= BIT(e->port_reg_idx);
}
@@ -1053,7 +1100,7 @@ static int ub960_atr_attach_client(struct i2c_atr *atr, u32 chan_id,
reg_idx = ffz(port_reg_idx_mask);
- entry->reserved = true;
+ entry->in_use = true;
entry->nport = rxport->nport;
entry->slave_id = client->addr;
entry->port_reg_idx = reg_idx;
@@ -1067,11 +1114,8 @@ static int ub960_atr_attach_client(struct i2c_atr *atr, u32 chan_id,
*alias_id = alias; /* tell the atr which alias we chose */
- dev_dbg(dev, "rx%u: client 0x%02x mapped at alias 0x%02x (%s)\n",
- rxport->nport, client->addr, alias, client->name);
-
out_unlock:
- mutex_unlock(&priv->atr_alias_table.lock);
+ mutex_unlock(&priv->atr.lock);
return ret;
}
@@ -1084,43 +1128,35 @@ static void ub960_atr_detach_client(struct i2c_atr *atr, u32 chan_id,
struct atr_alias_table_entry *entry;
unsigned int reg_idx;
unsigned int pool_idx;
- u16 alias = 0;
-
- dev_dbg(dev, "rx%u: %s\n", chan_id, __func__);
- mutex_lock(&priv->atr_alias_table.lock);
+ mutex_lock(&priv->atr.lock);
/* Find alias mapped to this client */
- for (pool_idx = 0; pool_idx < priv->atr_alias_table.num_entries; pool_idx++) {
- entry = &priv->atr_alias_table.entries[pool_idx];
+ for (pool_idx = 0; pool_idx < priv->atr.num_aliases; ++pool_idx) {
+ entry = &priv->atr.aliases[pool_idx];
- if (entry->reserved && entry->nport == rxport->nport &&
+ if (entry->in_use && entry->nport == rxport->nport &&
entry->slave_id == client->addr)
break;
}
- if (pool_idx == priv->atr_alias_table.num_entries) {
+ if (pool_idx == priv->atr.num_aliases) {
dev_err(dev, "rx%u: client 0x%02x is not mapped!\n",
rxport->nport, client->addr);
goto out_unlock;
}
- alias = entry->alias_id;
-
reg_idx = entry->port_reg_idx;
/* Unmap */
ub960_rxport_write(priv, chan_id, UB960_RR_SLAVE_ALIAS(reg_idx), 0);
- entry->reserved = false;
-
- dev_dbg(dev, "rx%u: client 0x%02x unmapped from alias 0x%02x (%s)\n",
- rxport->nport, client->addr, alias, client->name);
+ entry->in_use = false;
out_unlock:
- mutex_unlock(&priv->atr_alias_table.lock);
+ mutex_unlock(&priv->atr.lock);
}
static const struct i2c_atr_ops ub960_atr_ops = {
@@ -1128,18 +1164,39 @@ static const struct i2c_atr_ops ub960_atr_ops = {
.detach_client = ub960_atr_detach_client,
};
+static int ub960_init_atr(struct ub960_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ struct i2c_adapter *parent_adap = priv->client->adapter;
+
+ priv->atr.atr = i2c_atr_new(parent_adap, dev, &ub960_atr_ops,
+ priv->hw_data->num_rxports);
+ if (IS_ERR(priv->atr.atr))
+ return PTR_ERR(priv->atr.atr);
+
+ i2c_atr_set_driver_data(priv->atr.atr, priv);
+
+ return 0;
+}
+
+static void ub960_uninit_atr(struct ub960_data *priv)
+{
+ i2c_atr_delete(priv->atr.atr);
+ priv->atr.atr = NULL;
+}
+
/* -----------------------------------------------------------------------------
- * CSI ports
+ * TX ports
*/
static int ub960_parse_dt_txport(struct ub960_data *priv,
- const struct fwnode_handle *ep_fwnode,
+ struct fwnode_handle *ep_fwnode,
u8 nport)
{
struct device *dev = &priv->client->dev;
+ struct v4l2_fwnode_endpoint vep = {};
struct ub960_txport *txport;
int ret;
- u64 freq;
txport = kzalloc(sizeof(*txport), GFP_KERNEL);
if (!txport)
@@ -1148,39 +1205,40 @@ static int ub960_parse_dt_txport(struct ub960_data *priv,
txport->priv = priv;
txport->nport = nport;
- priv->txports[nport] = txport;
-
- ret = fwnode_property_count_u32(ep_fwnode, "data-lanes");
- if (ret < 0) {
- dev_err(dev, "tx%u: failed to parse 'data-lanes': %d\n", nport,
- ret);
+ vep.bus_type = V4L2_MBUS_CSI2_DPHY;
+ ret = v4l2_fwnode_endpoint_alloc_parse(ep_fwnode, &vep);
+ if (ret) {
+ dev_err(dev, "tx%u: failed to parse endpoint data\n", nport);
goto err_free_txport;
}
- txport->num_data_lanes = ret;
+ txport->num_data_lanes = vep.bus.mipi_csi2.num_data_lanes;
- ret = fwnode_property_read_u64(ep_fwnode, "link-frequencies", &freq);
- if (ret) {
- dev_err(dev, "tx%u: failed to read 'link-frequencies': %d\n",
- nport, ret);
- goto err_free_txport;
+ if (vep.nr_of_link_frequencies != 1) {
+ ret = -EINVAL;
+ goto err_free_vep;
}
- priv->tx_link_freq[0] = freq;
- priv->tx_data_rate = freq * 2;
+ priv->tx_link_freq[0] = vep.link_frequencies[0];
+ priv->tx_data_rate = priv->tx_link_freq[0] * 2;
if (priv->tx_data_rate != MHZ(1600) &&
priv->tx_data_rate != MHZ(1200) &&
priv->tx_data_rate != MHZ(800) &&
priv->tx_data_rate != MHZ(400)) {
dev_err(dev, "tx%u: invalid 'link-frequencies' value\n", nport);
- return -EINVAL;
+ ret = -EINVAL;
+ goto err_free_vep;
}
- dev_dbg(dev, "tx%u: nominal data rate: %u", nport, priv->tx_data_rate);
+ v4l2_fwnode_endpoint_free(&vep);
+
+ priv->txports[nport] = txport;
return 0;
+err_free_vep:
+ v4l2_fwnode_endpoint_free(&vep);
err_free_txport:
kfree(txport);
@@ -1193,7 +1251,7 @@ static void ub960_csi_handle_events(struct ub960_data *priv, u8 nport)
u8 csi_tx_isr;
int ret;
- ret = ub960_csiport_read(priv, nport, UB960_TR_CSI_TX_ISR, &csi_tx_isr);
+ ret = ub960_txport_read(priv, nport, UB960_TR_CSI_TX_ISR, &csi_tx_isr);
if (ret)
return;
@@ -1288,15 +1346,13 @@ static int ub960_rxport_get_strobe_pos(struct ub960_data *priv,
UB960_IR_RX_ANA_STROBE_SET_CLK, &v);
clk_delay = (v & UB960_IR_RX_ANA_STROBE_SET_CLK_NO_EXTRA_DELAY) ?
- 0 :
- UB960_MANUAL_STROBE_EXTRA_DELAY;
+ 0 : UB960_MANUAL_STROBE_EXTRA_DELAY;
ub960_read_ind(priv, UB960_IND_TARGET_RX_ANA(nport),
UB960_IR_RX_ANA_STROBE_SET_DATA, &v);
data_delay = (v & UB960_IR_RX_ANA_STROBE_SET_DATA_NO_EXTRA_DELAY) ?
- 0 :
- UB960_MANUAL_STROBE_EXTRA_DELAY;
+ 0 : UB960_MANUAL_STROBE_EXTRA_DELAY;
ret = ub960_rxport_read(priv, nport, UB960_RR_SFILTER_STS_0, &v);
if (ret)
@@ -1457,10 +1513,9 @@ static int ub960_rxport_link_ok(struct ub960_data *priv, unsigned int nport,
bool *ok)
{
u8 rx_port_sts1, rx_port_sts2;
- unsigned int parity_errors;
+ u16 parity_errors;
u8 csi_rx_sts;
u8 csi_err_cnt;
- u8 v1, v2;
u8 bcc_sts;
int ret;
bool errors;
@@ -1493,16 +1548,11 @@ static int ub960_rxport_link_ok(struct ub960_data *priv, unsigned int nport,
if (ret)
return ret;
- ret = ub960_rxport_read(priv, nport, UB960_RR_RX_PAR_ERR_HI, &v1);
- if (ret)
- return ret;
-
- ret = ub960_rxport_read(priv, nport, UB960_RR_RX_PAR_ERR_LO, &v2);
+ ret = ub960_rxport_read16(priv, nport, UB960_RR_RX_PAR_ERR_HI,
+ &parity_errors);
if (ret)
return ret;
- parity_errors = (v1 << 8) | v2;
-
errors = (rx_port_sts1 & UB960_RR_RX_PORT_STS1_ERROR_MASK) ||
(rx_port_sts2 & UB960_RR_RX_PORT_STS2_ERROR_MASK) ||
(bcc_sts & UB960_RR_BCC_STATUS_ERROR_MASK) ||
@@ -1530,8 +1580,11 @@ static int ub960_rxport_wait_locks(struct ub960_data *priv,
u8 nport;
int ret;
- if (port_mask == 0)
+ if (port_mask == 0) {
+ if (lock_mask)
+ *lock_mask = 0;
return 0;
+ }
if (port_mask >= BIT(priv->hw_data->num_rxports))
return -EINVAL;
@@ -1555,6 +1608,11 @@ static int ub960_rxport_wait_locks(struct ub960_data *priv,
if (ret)
return ret;
+ /*
+ * We want the link to be ok for two consecutive loops,
+ * as a link could get established just before our test
+ * and drop soon after.
+ */
if (!ok || !(link_ok_mask & BIT(nport)))
missing++;
@@ -1579,7 +1637,7 @@ static int ub960_rxport_wait_locks(struct ub960_data *priv,
for_each_set_bit(nport, &port_mask, priv->hw_data->num_rxports) {
struct ub960_rxport *rxport = priv->rxports[nport];
s8 strobe_pos, eq_level;
- u8 v1, v2;
+ u16 v;
if (!rxport)
continue;
@@ -1589,8 +1647,7 @@ static int ub960_rxport_wait_locks(struct ub960_data *priv,
continue;
}
- ub960_rxport_read(priv, nport, UB960_RR_RX_FREQ_HIGH, &v1);
- ub960_rxport_read(priv, nport, UB960_RR_RX_FREQ_LOW, &v2);
+ ub960_rxport_read16(priv, nport, UB960_RR_RX_FREQ_HIGH, &v);
ret = ub960_rxport_get_strobe_pos(priv, nport, &strobe_pos);
if (ret)
@@ -1600,35 +1657,13 @@ static int ub960_rxport_wait_locks(struct ub960_data *priv,
if (ret)
return ret;
- dev_dbg(dev, "\trx%u: locked, SP: %d, EQ: %u, freq %u Hz\n",
- nport, strobe_pos, eq_level,
- v1 * 1000000 + v2 * 1000000 / 256);
+ dev_dbg(dev, "\trx%u: locked, SP: %d, EQ: %u, freq %llu Hz\n",
+ nport, strobe_pos, eq_level, (v * 1000000ULL) >> 8);
}
return 0;
}
-static int ub960_init_atr(struct ub960_data *priv)
-{
- struct device *dev = &priv->client->dev;
- struct i2c_adapter *parent_adap = priv->client->adapter;
-
- priv->atr = i2c_atr_new(parent_adap, dev, &ub960_atr_ops,
- priv->hw_data->num_rxports);
- if (IS_ERR(priv->atr))
- return PTR_ERR(priv->atr);
-
- i2c_atr_set_driver_data(priv->atr, priv);
-
- return 0;
-}
-
-static void ub960_uninit_atr(struct ub960_data *priv)
-{
- i2c_atr_delete(priv->atr);
- priv->atr = NULL;
-}
-
static unsigned long ub960_calc_bc_clk_rate_ub960(struct ub960_data *priv,
struct ub960_rxport *rxport)
{
@@ -1684,37 +1719,37 @@ static int ub960_rxport_add_serializer(struct ub960_data *priv, u8 nport)
{
struct ub960_rxport *rxport = priv->rxports[nport];
struct device *dev = &priv->client->dev;
- struct ds90ub9xx_platform_data *ser_pdata = &rxport->ser_platform_data;
+ struct ds90ub9xx_platform_data *ser_pdata = &rxport->ser.pdata;
struct i2c_board_info ser_info = {
- .of_node = to_of_node(rxport->remote_fwnode),
- .fwnode = rxport->remote_fwnode,
+ .of_node = to_of_node(rxport->ser.fwnode),
+ .fwnode = rxport->ser.fwnode,
.platform_data = ser_pdata,
};
ser_pdata->port = nport;
- ser_pdata->atr = priv->atr;
+ ser_pdata->atr = priv->atr.atr;
if (priv->hw_data->is_ub9702)
ser_pdata->bc_rate = ub960_calc_bc_clk_rate_ub9702(priv, rxport);
else
ser_pdata->bc_rate = ub960_calc_bc_clk_rate_ub960(priv, rxport);
/*
- * Adding the serializer under rxport->adap would be cleaner, but it
- * would need tweaks to bypass the alias table. Adding to the
- * upstream adapter is way simpler.
+ * The serializer is added under the same i2c adapter as the
+ * deserializer. This is not quite right, as the serializer is behind
+ * the FPD-Link.
*/
- ser_info.addr = rxport->ser_alias;
- rxport->ser_client =
+ ser_info.addr = rxport->ser.alias;
+ rxport->ser.client =
i2c_new_client_device(priv->client->adapter, &ser_info);
- if (!rxport->ser_client) {
+ if (!rxport->ser.client) {
dev_err(dev, "rx%u: cannot add %s i2c device", nport,
ser_info.type);
return -EIO;
}
dev_dbg(dev, "rx%u: remote serializer at alias 0x%02x (%u-%04x)\n",
- nport, rxport->ser_client->addr,
- rxport->ser_client->adapter->nr, rxport->ser_client->addr);
+ nport, rxport->ser.client->addr,
+ rxport->ser.client->adapter->nr, rxport->ser.client->addr);
return 0;
}
@@ -1723,8 +1758,8 @@ static void ub960_rxport_remove_serializer(struct ub960_data *priv, u8 nport)
{
struct ub960_rxport *rxport = priv->rxports[nport];
- i2c_unregister_device(rxport->ser_client);
- rxport->ser_client = NULL;
+ i2c_unregister_device(rxport->ser.client);
+ rxport->ser.client = NULL;
}
/* Add serializer i2c devices for all initialized ports */
@@ -1750,10 +1785,6 @@ static int ub960_rxport_add_serializers(struct ub960_data *priv)
while (nport--) {
struct ub960_rxport *rxport = priv->rxports[nport];
- if (!rxport)
- continue;
-
- rxport = priv->rxports[nport];
if (!rxport)
continue;
@@ -1792,7 +1823,7 @@ static void ub960_init_tx_port(struct ub960_data *priv,
csi_ctl |= (4 - txport->num_data_lanes) << 4;
- ub960_csiport_write(priv, nport, UB960_TR_CSI_CTL, csi_ctl);
+ ub960_txport_write(priv, nport, UB960_TR_CSI_CTL, csi_ctl);
}
static int ub960_init_tx_ports(struct ub960_data *priv)
@@ -1831,20 +1862,20 @@ static int ub960_init_tx_ports(struct ub960_data *priv)
case MHZ(1600):
default:
ub960_write_ind(priv, UB960_IND_TARGET_CSI_ANA, 0x92, 0x80);
- ub960_write_ind(priv, UB960_IND_TARGET_CSI_ANA, 0x4B, 0x2A);
+ ub960_write_ind(priv, UB960_IND_TARGET_CSI_ANA, 0x4b, 0x2a);
break;
case MHZ(800):
ub960_write_ind(priv, UB960_IND_TARGET_CSI_ANA, 0x92, 0x90);
- ub960_write_ind(priv, UB960_IND_TARGET_CSI_ANA, 0x4F, 0x2A);
- ub960_write_ind(priv, UB960_IND_TARGET_CSI_ANA, 0x4B, 0x2A);
+ ub960_write_ind(priv, UB960_IND_TARGET_CSI_ANA, 0x4f, 0x2a);
+ ub960_write_ind(priv, UB960_IND_TARGET_CSI_ANA, 0x4b, 0x2a);
break;
case MHZ(400):
- ub960_write_ind(priv, UB960_IND_TARGET_CSI_ANA, 0x92, 0xA0);
+ ub960_write_ind(priv, UB960_IND_TARGET_CSI_ANA, 0x92, 0xa0);
break;
}
}
- for (nport = 0; nport < priv->hw_data->num_txports; nport++) {
+ for (nport = 0; nport < priv->hw_data->num_txports; ++nport) {
struct ub960_txport *txport = priv->txports[nport];
if (!txport)
@@ -1941,7 +1972,7 @@ static void ub960_init_rx_port_ub960(struct ub960_data *priv,
/* Enable I2C communication to the serializer via the alias addr */
ub960_rxport_write(priv, nport, UB960_RR_SER_ALIAS_ID,
- rxport->ser_alias << 1);
+ rxport->ser.alias << 1);
/* Configure EQ related settings */
ub960_rxport_config_eq(priv, nport);
@@ -1992,19 +2023,19 @@ static void ub960_init_rx_port_ub9702_fpd3(struct ub960_data *priv,
ub960_rxport_write(priv, nport, UB960_RR_CHANNEL_MODE, fpd_func_mode);
/* set serdes_eq_mode = 1 */
- ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0xA8, 0x80);
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0xa8, 0x80);
/* enable serdes driver */
- ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x0D, 0x7F);
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x0d, 0x7f);
/* set serdes_eq_offset=4 */
- ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x2B, 0x04);
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x2b, 0x04);
- /* init default serdes_eq_max in 0xA9 */
- ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0xA9, 0x23);
+ /* init default serdes_eq_max in 0xa9 */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0xa9, 0x23);
- /* init serdes_eq_min in 0xAA */
- ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0xAA, 0);
+ /* init serdes_eq_min in 0xaa */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0xaa, 0);
/* serdes_driver_ctl2 control: DS90UB953-Q1/DS90UB933-Q1/DS90UB913A-Q1 */
ub960_ind_update_bits(priv, UB960_IND_TARGET_RX_ANA(nport), 0x1b,
@@ -2025,25 +2056,25 @@ static void ub960_init_rx_port_ub9702_fpd4_aeq(struct ub960_data *priv,
u8 v;
/* AEQ init */
- ub960_read_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x2C, &v);
+ ub960_read_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x2c, &v);
ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x27, v);
ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x28, v + 1);
- ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x2B, 0x00);
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x2b, 0x00);
}
/* enable serdes_eq_ctl2 */
- ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x9E, 0x00);
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x9e, 0x00);
/* enable serdes_eq_ctl1 */
ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x90, 0x40);
/* enable serdes_eq_en */
- ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x2E, 0x40);
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x2e, 0x40);
/* disable serdes_eq_override */
- ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0xF0, 0x00);
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0xf0, 0x00);
/* disable serdes_gain_override */
ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x71, 0x00);
@@ -2087,7 +2118,7 @@ static void ub960_init_rx_port_ub9702_fpd4(struct ub960_data *priv,
ub960_rxport_write(priv, nport, UB960_RR_CHANNEL_MODE, 0);
/* add serdes_eq_offset of 4 */
- ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x2B, 0x04);
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x2b, 0x04);
/* FPD4 serdes_start_eq in 0x27: assign default */
ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x27, 0x0);
@@ -2097,12 +2128,12 @@ static void ub960_init_rx_port_ub9702_fpd4(struct ub960_data *priv,
/* set serdes_driver_mode into FPD IV mode */
ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x04, 0x00);
/* set FPD PBC drv into FPD IV mode */
- ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x1B, 0x00);
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x1b, 0x00);
/* set serdes_system_init to 0x2f */
ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x21, 0x2f);
/* set serdes_system_rst in reset mode */
- ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x25, 0xC1);
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x25, 0xc1);
/* RX port to 7.55G mode */
ub960_update_bits(priv, UB960_SR_FPD_RATE_CFG, 0x3 << (nport * 2),
@@ -2144,7 +2175,8 @@ static void ub960_init_rx_port_ub9702(struct ub960_data *priv,
}
/* LV_POLARITY & FV_POLARITY */
- ub960_rxport_update_bits(priv, nport, UB960_RR_PORT_CONFIG2, 0x3, 0x1);
+ ub960_rxport_update_bits(priv, nport, UB960_RR_PORT_CONFIG2, 0x3,
+ rxport->lv_fv_pol);
/* Enable all interrupt sources from this port */
ub960_rxport_write(priv, nport, UB960_RR_PORT_ICR_HI, 0x07);
@@ -2157,7 +2189,7 @@ static void ub960_init_rx_port_ub9702(struct ub960_data *priv,
/* Enable I2C communication to the serializer via the alias addr */
ub960_rxport_write(priv, nport, UB960_RR_SER_ALIAS_ID,
- rxport->ser_alias << 1);
+ rxport->ser.alias << 1);
/* Enable RX port */
ub960_update_bits(priv, UB960_SR_RX_PORT_CTL, BIT(nport), BIT(nport));
@@ -2172,7 +2204,7 @@ static int ub960_init_rx_ports(struct ub960_data *priv)
{
unsigned int nport;
- for (nport = 0; nport < priv->hw_data->num_rxports; nport++) {
+ for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
struct ub960_rxport *rxport = priv->rxports[nport];
if (!rxport)
@@ -2214,11 +2246,12 @@ static void ub960_rxport_handle_events(struct ub960_data *priv, u8 nport)
return;
if (rx_port_sts1 & UB960_RR_RX_PORT_STS1_PARITY_ERROR) {
- u8 v1, v2;
+ u16 v;
- ub960_rxport_read(priv, nport, UB960_RR_RX_PAR_ERR_HI, &v1);
- ub960_rxport_read(priv, nport, UB960_RR_RX_PAR_ERR_LO, &v2);
- dev_err(dev, "rx%u parity errors: %u\n", nport, (v1 << 8) | v2);
+ ret = ub960_rxport_read16(priv, nport, UB960_RR_RX_PAR_ERR_HI,
+ &v);
+ if (!ret)
+ dev_err(dev, "rx%u parity errors: %u\n", nport, v);
}
if (rx_port_sts1 & UB960_RR_RX_PORT_STS1_BCC_CRC_ERROR)
@@ -2273,21 +2306,20 @@ static void ub960_rxport_handle_events(struct ub960_data *priv, u8 nport)
dev_err(dev, "rx%u BCC sequence error", nport);
if (rx_port_sts2 & UB960_RR_RX_PORT_STS2_LINE_LEN_CHG) {
- u8 v1, v2;
+ u16 v;
- ub960_rxport_read(priv, nport, UB960_RR_LINE_LEN_1, &v1);
- ub960_rxport_read(priv, nport, UB960_RR_LINE_LEN_0, &v2);
- dev_dbg(dev, "rx%u line len changed: %u\n", nport,
- (v1 << 8) | v2);
+ ret = ub960_rxport_read16(priv, nport, UB960_RR_LINE_LEN_1, &v);
+ if (!ret)
+ dev_dbg(dev, "rx%u line len changed: %u\n", nport, v);
}
if (rx_port_sts2 & UB960_RR_RX_PORT_STS2_LINE_CNT_CHG) {
- u8 v1, v2;
+ u16 v;
- ub960_rxport_read(priv, nport, UB960_RR_LINE_COUNT_HI, &v1);
- ub960_rxport_read(priv, nport, UB960_RR_LINE_COUNT_LO, &v2);
- dev_dbg(dev, "rx%u line count changed: %u\n", nport,
- (v1 << 8) | v2);
+ ret = ub960_rxport_read16(priv, nport, UB960_RR_LINE_COUNT_HI,
+ &v);
+ if (!ret)
+ dev_dbg(dev, "rx%u line count changed: %u\n", nport, v);
}
if (rx_port_sts1 & UB960_RR_RX_PORT_STS1_LOCK_STS_CHG) {
@@ -2311,16 +2343,31 @@ static void ub960_rxport_handle_events(struct ub960_data *priv, u8 nport)
* V4L2
*/
+/*
+ * The current implementation only supports a simple VC mapping, where all VCs
+ * from a one RX port will be mapped to the same VC. Also, the hardware
+ * dictates that all streams from an RX port must go to a single TX port.
+ *
+ * This function decides the target VC numbers for each RX port with a simple
+ * algorithm, so that for each TX port, we get VC numbers starting from 0,
+ * and counting up.
+ *
+ * E.g. if all four RX ports are in use, of which the first two go to the
+ * first TX port and the secont two go to the second TX port, we would get
+ * the following VCs for the four RX ports: 0, 1, 0, 1.
+ *
+ * TODO: implement a more sophisticated VC mapping. As the driver cannot know
+ * what VCs the sinks expect (say, an FPGA with hardcoded VC routing), this
+ * probably needs to be somehow configurable. Device tree?
+ */
static void ub960_get_vc_maps(struct ub960_data *priv,
struct v4l2_subdev_state *state, u8 *vc)
{
- const struct v4l2_subdev_krouting *routing = &state->routing;
- u8 cur_vc[UB960_MAX_TX_NPORTS] = { };
+ u8 cur_vc[UB960_MAX_TX_NPORTS] = {};
+ struct v4l2_subdev_route *route;
u8 handled_mask = 0;
- unsigned int i;
- for (i = 0; i < routing->num_routes; ++i) {
- struct v4l2_subdev_route *route = &routing->routes[i];
+ for_each_active_route(&state->routing, route) {
unsigned int rx, tx;
rx = ub960_pad_to_port(priv, route->sink_pad);
@@ -2340,11 +2387,9 @@ static int ub960_enable_tx_port(struct ub960_data *priv, unsigned int nport)
dev_dbg(dev, "enable TX port %u\n", nport);
- ub960_csiport_update_bits(priv, nport, UB960_TR_CSI_CTL,
- UB960_TR_CSI_CTL_CSI_ENABLE,
- UB960_TR_CSI_CTL_CSI_ENABLE);
-
- return 0;
+ return ub960_txport_update_bits(priv, nport, UB960_TR_CSI_CTL,
+ UB960_TR_CSI_CTL_CSI_ENABLE,
+ UB960_TR_CSI_CTL_CSI_ENABLE);
}
static void ub960_disable_tx_port(struct ub960_data *priv, unsigned int nport)
@@ -2353,8 +2398,8 @@ static void ub960_disable_tx_port(struct ub960_data *priv, unsigned int nport)
dev_dbg(dev, "disable TX port %u\n", nport);
- ub960_csiport_update_bits(priv, nport, UB960_TR_CSI_CTL,
- UB960_TR_CSI_CTL_CSI_ENABLE, 0);
+ ub960_txport_update_bits(priv, nport, UB960_TR_CSI_CTL,
+ UB960_TR_CSI_CTL_CSI_ENABLE, 0);
}
static int ub960_enable_rx_port(struct ub960_data *priv, unsigned int nport)
@@ -2364,9 +2409,7 @@ static int ub960_enable_rx_port(struct ub960_data *priv, unsigned int nport)
dev_dbg(dev, "enable RX port %u\n", nport);
/* Enable forwarding */
- ub960_update_bits(priv, UB960_SR_FWD_CTL1, BIT(4 + nport), 0);
-
- return 0;
+ return ub960_update_bits(priv, UB960_SR_FWD_CTL1, BIT(4 + nport), 0);
}
static void ub960_disable_rx_port(struct ub960_data *priv, unsigned int nport)
@@ -2380,10 +2423,56 @@ static void ub960_disable_rx_port(struct ub960_data *priv, unsigned int nport)
BIT(4 + nport));
}
+/*
+ * The driver only supports using a single VC for each source. This function
+ * checks that each source only provides streams using a single VC.
+ */
+static int ub960_validate_stream_vcs(struct ub960_data *priv)
+{
+ unsigned int nport;
+ unsigned int i;
+
+ for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ struct ub960_rxport *rxport = priv->rxports[nport];
+ struct v4l2_mbus_frame_desc desc;
+ int ret;
+ u8 cur_vc;
+
+ if (!rxport)
+ continue;
+
+ ret = v4l2_subdev_call(rxport->source.sd, pad, get_frame_desc,
+ rxport->source.pad, &desc);
+ if (ret)
+ return ret;
+
+ if (desc.type != V4L2_MBUS_FRAME_DESC_TYPE_CSI2)
+ continue;
+
+ for (i = 0; i < desc.num_entries; ++i) {
+ u8 vc = desc.entry[i].bus.csi2.vc;
+
+ if (i == 0) {
+ cur_vc = vc;
+ continue;
+ }
+
+ if (vc == cur_vc)
+ continue;
+
+ dev_err(&priv->client->dev,
+ "rx%u: source with multiple virtual-channels is not supported\n",
+ nport);
+ return -ENODEV;
+ }
+ }
+
+ return 0;
+}
+
static int ub960_configure_ports_for_streaming(struct ub960_data *priv,
struct v4l2_subdev_state *state)
{
- const struct v4l2_subdev_krouting *routing = &state->routing;
u8 fwd_ctl;
struct {
u32 num_streams;
@@ -2391,13 +2480,19 @@ static int ub960_configure_ports_for_streaming(struct ub960_data *priv,
u8 meta_dt;
u32 meta_lines;
u32 tx_port;
- } rx_data[UB960_MAX_RX_NPORTS] = { };
- u8 vc_map[UB960_MAX_RX_NPORTS] = { };
+ } rx_data[UB960_MAX_RX_NPORTS] = {};
+ u8 vc_map[UB960_MAX_RX_NPORTS] = {};
+ struct v4l2_subdev_route *route;
+ unsigned int nport;
+ int ret;
+
+ ret = ub960_validate_stream_vcs(priv);
+ if (ret)
+ return ret;
ub960_get_vc_maps(priv, state, vc_map);
- for (unsigned int i = 0; i < routing->num_routes; ++i) {
- struct v4l2_subdev_route *route = &routing->routes[i];
+ for_each_active_route(&state->routing, route) {
struct ub960_rxport *rxport;
struct ub960_txport *txport;
struct v4l2_mbus_framefmt *fmt;
@@ -2455,7 +2550,7 @@ static int ub960_configure_ports_for_streaming(struct ub960_data *priv,
fwd_ctl = 0;
- for (unsigned int nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
struct ub960_rxport *rxport = priv->rxports[nport];
u8 vc = vc_map[nport];
@@ -2534,24 +2629,11 @@ static int ub960_enable_streams(struct v4l2_subdev *sd,
{
struct ub960_data *priv = sd_to_ub960(sd);
struct device *dev = &priv->client->dev;
- const struct v4l2_subdev_krouting *routing;
- unsigned int source_stream;
- int ret;
- u64 sink_streams[UB960_MAX_RX_NPORTS] = { };
- unsigned int nport;
+ u64 sink_streams[UB960_MAX_RX_NPORTS] = {};
+ struct v4l2_subdev_route *route;
unsigned int failed_port;
-
- dev_dbg(dev, "Enable streams %u:%#llx\n", source_pad,
- source_streams_mask);
-
- if (priv->stream_enable_mask[source_pad] & source_streams_mask) {
- dev_err(dev,
- "cannot enable already enabled streams on pad %u mask %#llx\n",
- source_pad, source_streams_mask);
- return -EBUSY;
- }
-
- routing = &state->routing;
+ unsigned int nport;
+ int ret;
if (!priv->streaming) {
dev_dbg(dev, "Prepare for streaming\n");
@@ -2571,22 +2653,16 @@ static int ub960_enable_streams(struct v4l2_subdev *sd,
priv->stream_enable_mask[source_pad] |= source_streams_mask;
/* Collect sink streams per pad which we need to enable */
- for (source_stream = 0; source_stream < sizeof(source_streams_mask) * 8;
- ++source_stream) {
- struct v4l2_subdev_route *route;
-
- if (!(source_streams_mask & BIT_ULL(source_stream)))
+ for_each_active_route(&state->routing, route) {
+ if (route->source_pad != source_pad)
continue;
- for_each_active_route(routing, route) {
- if (!(route->source_pad == source_pad) ||
- !(route->source_stream == source_stream))
- continue;
+ if (!(source_streams_mask & BIT_ULL(route->source_stream)))
+ continue;
- nport = ub960_pad_to_port(priv, route->sink_pad);
+ nport = ub960_pad_to_port(priv, route->sink_pad);
- sink_streams[nport] |= BIT_ULL(route->sink_stream);
- }
+ sink_streams[nport] |= BIT_ULL(route->sink_stream);
}
for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
@@ -2604,12 +2680,12 @@ static int ub960_enable_streams(struct v4l2_subdev *sd,
priv->stream_enable_mask[nport] |= sink_streams[nport];
- dev_dbg(dev, "Enable RX port %u streams %#llx\n", nport,
+ dev_dbg(dev, "enable RX port %u streams %#llx\n", nport,
sink_streams[nport]);
ret = v4l2_subdev_enable_streams(
- priv->rxports[nport]->source_sd,
- priv->rxports[nport]->source_sd_pad,
+ priv->rxports[nport]->source.sd,
+ priv->rxports[nport]->source.pad,
sink_streams[nport]);
if (ret) {
priv->stream_enable_mask[nport] &= ~sink_streams[nport];
@@ -2631,12 +2707,12 @@ static int ub960_enable_streams(struct v4l2_subdev *sd,
if (!sink_streams[nport])
continue;
- dev_dbg(dev, "Disable RX port %u streams %#llx\n", nport,
+ dev_dbg(dev, "disable RX port %u streams %#llx\n", nport,
sink_streams[nport]);
ret = v4l2_subdev_disable_streams(
- priv->rxports[nport]->source_sd,
- priv->rxports[nport]->source_sd_pad,
+ priv->rxports[nport]->source.sd,
+ priv->rxports[nport]->source.pad,
sink_streams[nport]);
if (ret)
dev_err(dev, "Failed to disable streams: %d\n", ret);
@@ -2665,53 +2741,34 @@ static int ub960_disable_streams(struct v4l2_subdev *sd,
{
struct ub960_data *priv = sd_to_ub960(sd);
struct device *dev = &priv->client->dev;
- const struct v4l2_subdev_krouting *routing;
- int ret;
- unsigned int source_stream;
- u64 sink_streams[UB960_MAX_RX_NPORTS] = { };
+ u64 sink_streams[UB960_MAX_RX_NPORTS] = {};
+ struct v4l2_subdev_route *route;
unsigned int nport;
-
- dev_dbg(dev, "Disable streams %u:%#llx\n", source_pad,
- source_streams_mask);
-
- if ((priv->stream_enable_mask[source_pad] & source_streams_mask) != source_streams_mask) {
- dev_err(dev,
- "cannot disable already disabled streams on pad %u mask %#llx\n",
- source_pad, source_streams_mask);
- return -EBUSY;
- }
-
- routing = &state->routing;
+ int ret;
/* Collect sink streams per pad which we need to disable */
- for (source_stream = 0; source_stream < sizeof(source_streams_mask) * 8;
- ++source_stream) {
- struct v4l2_subdev_route *route;
-
- if (!(source_streams_mask & BIT_ULL(source_stream)))
+ for_each_active_route(&state->routing, route) {
+ if (route->source_pad != source_pad)
continue;
- for_each_active_route(routing, route) {
- if (!(route->source_pad == source_pad) ||
- !(route->source_stream == source_stream))
- continue;
+ if (!(source_streams_mask & BIT_ULL(route->source_stream)))
+ continue;
- nport = ub960_pad_to_port(priv, route->sink_pad);
+ nport = ub960_pad_to_port(priv, route->sink_pad);
- sink_streams[nport] |= BIT_ULL(route->sink_stream);
- }
+ sink_streams[nport] |= BIT_ULL(route->sink_stream);
}
for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
if (!sink_streams[nport])
continue;
- dev_dbg(dev, "Disable RX port %u streams %#llx\n", nport,
+ dev_dbg(dev, "disable RX port %u streams %#llx\n", nport,
sink_streams[nport]);
ret = v4l2_subdev_disable_streams(
- priv->rxports[nport]->source_sd,
- priv->rxports[nport]->source_sd_pad,
+ priv->rxports[nport]->source.sd,
+ priv->rxports[nport]->source.pad,
sink_streams[nport]);
if (ret)
dev_err(dev, "Failed to disable streams: %d\n", ret);
@@ -2736,76 +2793,14 @@ static int ub960_disable_streams(struct v4l2_subdev *sd,
return 0;
}
-static int ub960_s_stream(struct v4l2_subdev *sd, int enable)
-{
- struct ub960_data *priv = sd_to_ub960(sd);
- const struct v4l2_subdev_krouting *routing;
- struct v4l2_subdev_state *state;
- struct v4l2_subdev_route *route;
- u64 pad_stream_masks[UB960_MAX_TX_NPORTS] = { };
- unsigned int nport;
- int ret = 0;
-
- state = v4l2_subdev_lock_and_get_active_state(sd);
-
- routing = &state->routing;
-
- for_each_active_route(routing, route)
- pad_stream_masks[ub960_pad_to_port(priv, route->source_pad)] |=
- BIT_ULL(route->source_stream);
-
- if (enable) {
- for (nport = 0; nport < UB960_MAX_TX_NPORTS; ++nport) {
- if (pad_stream_masks[nport] == 0)
- continue;
-
- ret = ub960_enable_streams(
- sd, state, priv->hw_data->num_rxports + nport,
- pad_stream_masks[nport]);
-
- if (ret) {
- while (nport--) {
- if (pad_stream_masks[nport] == 0)
- continue;
-
- ub960_disable_streams(
- sd, state,
- priv->hw_data->num_rxports +
- nport,
- pad_stream_masks[nport]);
- }
-
- break;
- }
- }
- } else {
- for (nport = 0; nport < UB960_MAX_TX_NPORTS; ++nport) {
- if (pad_stream_masks[nport] == 0)
- continue;
-
- ub960_disable_streams(sd, state,
- priv->hw_data->num_rxports + nport,
- pad_stream_masks[nport]);
- }
- }
-
- v4l2_subdev_unlock_state(state);
-
- return ret;
-}
-
-static const struct v4l2_subdev_video_ops ub960_video_ops = {
- .s_stream = ub960_s_stream,
-};
-
static int _ub960_set_routing(struct v4l2_subdev *sd,
struct v4l2_subdev_state *state,
struct v4l2_subdev_krouting *routing)
{
- const struct v4l2_mbus_framefmt format = {
+ static const struct v4l2_mbus_framefmt format = {
.width = 640,
.height = 480,
- .code = MEDIA_BUS_FMT_UYVY8_2X8,
+ .code = MEDIA_BUS_FMT_UYVY8_1X16,
.field = V4L2_FIELD_NONE,
.colorspace = V4L2_COLORSPACE_SRGB,
.ycbcr_enc = V4L2_YCBCR_ENC_601,
@@ -2822,12 +2817,9 @@ static int _ub960_set_routing(struct v4l2_subdev *sd,
if (routing->num_routes > V4L2_FRAME_DESC_ENTRY_MAX)
return -E2BIG;
- /*
- * TODO: We need a new flag to validate that all streams from a sink pad
- * go to a single source pad.
- */
ret = v4l2_subdev_routing_validate(sd, routing,
- V4L2_SUBDEV_ROUTING_ONLY_1_TO_1);
+ V4L2_SUBDEV_ROUTING_ONLY_1_TO_1 |
+ V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX);
if (ret)
return ret;
@@ -2855,12 +2847,11 @@ static int ub960_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
struct v4l2_mbus_frame_desc *fd)
{
struct ub960_data *priv = sd_to_ub960(sd);
- const struct v4l2_subdev_krouting *routing;
struct v4l2_subdev_route *route;
struct v4l2_subdev_state *state;
int ret = 0;
struct device *dev = &priv->client->dev;
- u8 vc_map[UB960_MAX_RX_NPORTS] = { };
+ u8 vc_map[UB960_MAX_RX_NPORTS] = {};
if (!ub960_pad_is_source(priv, pad))
return -EINVAL;
@@ -2873,9 +2864,7 @@ static int ub960_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
ub960_get_vc_maps(priv, state, vc_map);
- routing = &state->routing;
-
- for_each_active_route(routing, route) {
+ for_each_active_route(&state->routing, route) {
struct v4l2_mbus_frame_desc_entry *source_entry = NULL;
struct v4l2_mbus_frame_desc source_fd;
unsigned int nport;
@@ -2886,9 +2875,9 @@ static int ub960_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
nport = ub960_pad_to_port(priv, route->sink_pad);
- ret = v4l2_subdev_call(priv->rxports[nport]->source_sd, pad,
+ ret = v4l2_subdev_call(priv->rxports[nport]->source.sd, pad,
get_frame_desc,
- priv->rxports[nport]->source_sd_pad,
+ priv->rxports[nport]->source.pad,
&source_fd);
if (ret) {
dev_err(dev,
@@ -2897,11 +2886,12 @@ static int ub960_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
goto out_unlock;
}
- for (i = 0; i < source_fd.num_entries; ++i)
+ for (i = 0; i < source_fd.num_entries; ++i) {
if (source_fd.entry[i].stream == route->sink_stream) {
source_entry = &source_fd.entry[i];
break;
}
+ }
if (!source_entry) {
dev_err(dev,
@@ -2966,7 +2956,12 @@ static int ub960_set_fmt(struct v4l2_subdev *sd,
if (ub960_pad_is_source(priv, format->pad))
return v4l2_subdev_get_fmt(sd, state, format);
- /* TODO: implement fmt validation */
+ /*
+ * Default to the first format if the requested media bus code isn't
+ * supported.
+ */
+ if (!ub960_find_format(format->format.code))
+ format->format.code = ub960_formats[0].code;
fmt = v4l2_subdev_state_get_stream_format(state, format->pad,
format->stream);
@@ -3027,12 +3022,14 @@ static int ub960_log_status(struct v4l2_subdev *sd)
struct device *dev = &priv->client->dev;
struct v4l2_subdev_state *state;
unsigned int nport;
- u8 v = 0, v1 = 0, v2 = 0;
+ unsigned int i;
+ u16 v16 = 0;
+ u8 v = 0;
u8 id[7];
state = v4l2_subdev_lock_and_get_active_state(sd);
- for (unsigned int i = 0; i < 6; ++i)
+ for (i = 0; i < 6; ++i)
ub960_read(priv, UB960_SR_FPD3_RX_ID(i), &id[i]);
id[6] = 0;
@@ -3048,25 +3045,21 @@ static int ub960_log_status(struct v4l2_subdev *sd)
continue;
}
- ub960_csiport_read(priv, nport, UB960_TR_CSI_STS, &v);
+ ub960_txport_read(priv, nport, UB960_TR_CSI_STS, &v);
dev_info(dev, "\tsync %u, pass %u\n", v & (u8)BIT(1),
v & (u8)BIT(0));
- ub960_read(priv, UB960_SR_CSI_FRAME_COUNT_HI(nport), &v1);
- ub960_read(priv, UB960_SR_CSI_FRAME_COUNT_LO(nport), &v2);
- dev_info(dev, "\tframe counter %u\n", (v1 << 8) | v2);
+ ub960_read16(priv, UB960_SR_CSI_FRAME_COUNT_HI(nport), &v16);
+ dev_info(dev, "\tframe counter %u\n", v16);
- ub960_read(priv, UB960_SR_CSI_FRAME_ERR_COUNT_HI(nport), &v1);
- ub960_read(priv, UB960_SR_CSI_FRAME_ERR_COUNT_LO(nport), &v2);
- dev_info(dev, "\tframe error counter %u\n", (v1 << 8) | v2);
+ ub960_read16(priv, UB960_SR_CSI_FRAME_ERR_COUNT_HI(nport), &v16);
+ dev_info(dev, "\tframe error counter %u\n", v16);
- ub960_read(priv, UB960_SR_CSI_LINE_COUNT_HI(nport), &v1);
- ub960_read(priv, UB960_SR_CSI_LINE_COUNT_LO(nport), &v2);
- dev_info(dev, "\tline counter %u\n", (v1 << 8) | v2);
+ ub960_read16(priv, UB960_SR_CSI_LINE_COUNT_HI(nport), &v16);
+ dev_info(dev, "\tline counter %u\n", v16);
- ub960_read(priv, UB960_SR_CSI_LINE_ERR_COUNT_HI(nport), &v1);
- ub960_read(priv, UB960_SR_CSI_LINE_ERR_COUNT_LO(nport), &v2);
- dev_info(dev, "\tline error counter %u\n", (v1 << 8) | v2);
+ ub960_read16(priv, UB960_SR_CSI_LINE_ERR_COUNT_HI(nport), &v16);
+ dev_info(dev, "\tline error counter %u\n", v16);
}
for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
@@ -3093,22 +3086,17 @@ static int ub960_log_status(struct v4l2_subdev *sd)
ub960_rxport_read(priv, nport, UB960_RR_RX_PORT_STS2, &v);
dev_info(dev, "\trx_port_sts2 %#02x\n", v);
- ub960_rxport_read(priv, nport, UB960_RR_RX_FREQ_HIGH, &v1);
- ub960_rxport_read(priv, nport, UB960_RR_RX_FREQ_LOW, &v2);
- dev_info(dev, "\tlink freq %u MHz\n",
- v1 * 1000000 + v2 * 1000000 / 256);
+ ub960_rxport_read16(priv, nport, UB960_RR_RX_FREQ_HIGH, &v16);
+ dev_info(dev, "\tlink freq %llu Hz\n", (v16 * 1000000ULL) >> 8);
- ub960_rxport_read(priv, nport, UB960_RR_RX_PAR_ERR_HI, &v1);
- ub960_rxport_read(priv, nport, UB960_RR_RX_PAR_ERR_LO, &v2);
- dev_info(dev, "\tparity errors %u\n", (v1 << 8) | v2);
+ ub960_rxport_read16(priv, nport, UB960_RR_RX_PAR_ERR_HI, &v16);
+ dev_info(dev, "\tparity errors %u\n", v16);
- ub960_rxport_read(priv, nport, UB960_RR_LINE_COUNT_HI, &v1);
- ub960_rxport_read(priv, nport, UB960_RR_LINE_COUNT_LO, &v2);
- dev_info(dev, "\tlines per frame %u\n", (v1 << 8) | v2);
+ ub960_rxport_read16(priv, nport, UB960_RR_LINE_COUNT_HI, &v16);
+ dev_info(dev, "\tlines per frame %u\n", v16);
- ub960_rxport_read(priv, nport, UB960_RR_LINE_LEN_1, &v1);
- ub960_rxport_read(priv, nport, UB960_RR_LINE_LEN_0, &v2);
- dev_info(dev, "\tbytes per line %u\n", (v1 << 8) | v2);
+ ub960_rxport_read16(priv, nport, UB960_RR_LINE_LEN_1, &v16);
+ dev_info(dev, "\tbytes per line %u\n", v16);
ub960_rxport_read(priv, nport, UB960_RR_CSI_ERR_COUNTER, &v);
dev_info(dev, "\tcsi_err_counter %u\n", v);
@@ -3180,7 +3168,6 @@ static const struct v4l2_subdev_core_ops ub960_subdev_core_ops = {
static const struct v4l2_subdev_ops ub960_subdev_ops = {
.core = &ub960_subdev_core_ops,
- .video = &ub960_video_ops,
.pad = &ub960_pad_ops,
};
@@ -3190,115 +3177,6 @@ static const struct media_entity_operations ub960_entity_ops = {
.has_pad_interdep = v4l2_subdev_has_pad_interdep,
};
-static void ub960_enable_tpg(struct ub960_data *priv, int tpg_num)
-{
- /*
- * Note: no need to write UB960_REG_IND_ACC_CTL: the only indirect
- * registers target we use is "CSI-2 Pattern Generator & Timing
- * Registers", which is the default
- */
-
- /*
- * TPG can only provide a single stream per CSI TX port. If
- * multiple streams are currently enabled, only the first
- * one will use the TPG, other streams will be halted.
- */
-
- struct v4l2_mbus_framefmt *fmt;
- u8 vbp, vfp;
- u16 blank_lines;
- u16 width;
- u16 height;
-
- u16 bytespp = 2; /* For MEDIA_BUS_FMT_UYVY8_1X16 */
- u8 cbars_idx = tpg_num - TEST_PATTERN_V_COLOR_BARS_1;
- u8 num_cbars = 1 << cbars_idx;
-
- u16 line_size; /* Line size [bytes] */
- u16 bar_size; /* cbar size [bytes] */
- u16 act_lpf; /* active lines/frame */
- u16 tot_lpf; /* tot lines/frame */
- u16 line_pd; /* Line period in 10-ns units */
-
- struct v4l2_subdev_state *state;
-
- state = v4l2_subdev_get_locked_active_state(&priv->sd);
-
- vbp = 33;
- vfp = 10;
- blank_lines = vbp + vfp + 2; /* total blanking lines */
-
- fmt = v4l2_subdev_state_get_stream_format(state, 4, 0);
- if (!fmt) {
- dev_err(&priv->client->dev, "failed to enable TPG\n");
- return;
- }
-
- width = fmt->width;
- height = fmt->height;
-
- line_size = width * bytespp;
- bar_size = line_size / num_cbars;
- act_lpf = height;
- tot_lpf = act_lpf + blank_lines;
- line_pd = 100000000 / 60 / tot_lpf;
-
- /* Disable forwarding from FPD-3 RX ports */
- ub960_read(priv, UB960_SR_FWD_CTL1, &priv->stored_fwd_ctl);
- ub960_write(priv, UB960_SR_FWD_CTL1, 0xf << 4);
-
- ub960_write_ind(priv, UB960_IND_TARGET_PAT_GEN, UB960_IR_PGEN_CTL,
- UB960_IR_PGEN_CTL_PGEN_ENABLE);
-
- /* YUV422 8bit: 2 bytes/block, CSI-2 data type 0x1e */
- ub960_write_ind(priv, UB960_IND_TARGET_PAT_GEN, UB960_IR_PGEN_CFG,
- cbars_idx << 4 | 0x2);
- ub960_write_ind(priv, UB960_IND_TARGET_PAT_GEN, UB960_IR_PGEN_CSI_DI,
- 0x1e);
-
- ub960_write_ind16(priv, UB960_IND_TARGET_PAT_GEN,
- UB960_IR_PGEN_LINE_SIZE1, line_size);
- ub960_write_ind16(priv, UB960_IND_TARGET_PAT_GEN,
- UB960_IR_PGEN_BAR_SIZE1, bar_size);
- ub960_write_ind16(priv, UB960_IND_TARGET_PAT_GEN,
- UB960_IR_PGEN_ACT_LPF1, act_lpf);
- ub960_write_ind16(priv, UB960_IND_TARGET_PAT_GEN,
- UB960_IR_PGEN_TOT_LPF1, tot_lpf);
- ub960_write_ind16(priv, UB960_IND_TARGET_PAT_GEN,
- UB960_IR_PGEN_LINE_PD1, line_pd);
- ub960_write_ind(priv, UB960_IND_TARGET_PAT_GEN, UB960_IR_PGEN_VBP, vbp);
- ub960_write_ind(priv, UB960_IND_TARGET_PAT_GEN, UB960_IR_PGEN_VFP, vfp);
-}
-
-static void ub960_disable_tpg(struct ub960_data *priv)
-{
- /* TPG off, enable forwarding from FPD-3 RX ports */
- ub960_write(priv, UB960_SR_FWD_CTL1, priv->stored_fwd_ctl);
-
- ub960_write_ind(priv, UB960_IND_TARGET_PAT_GEN, UB960_IR_PGEN_CTL, 0x00);
-}
-
-static int ub960_s_ctrl(struct v4l2_ctrl *ctrl)
-{
- struct ub960_data *priv =
- container_of(ctrl->handler, struct ub960_data, ctrl_handler);
-
- switch (ctrl->id) {
- case V4L2_CID_TEST_PATTERN:
- if (ctrl->val == 0)
- ub960_disable_tpg(priv);
- else
- ub960_enable_tpg(priv, ctrl->val);
- break;
- }
-
- return 0;
-}
-
-static const struct v4l2_ctrl_ops ub960_ctrl_ops = {
- .s_ctrl = ub960_s_ctrl,
-};
-
/* -----------------------------------------------------------------------------
* Core
*/
@@ -3317,7 +3195,9 @@ static irqreturn_t ub960_handle_events(int irq, void *arg)
dev_dbg(&priv->client->dev, "INTERRUPT_STS %x\n", int_sts);
- ub960_read(priv, UB960_SR_FWD_STS, &fwd_sts);
+ ret = ub960_read(priv, UB960_SR_FWD_STS, &fwd_sts);
+ if (ret)
+ return IRQ_NONE;
dev_dbg(&priv->client->dev, "FWD_STS %#02x\n", fwd_sts);
@@ -3353,7 +3233,7 @@ static void ub960_txport_free_ports(struct ub960_data *priv)
{
unsigned int nport;
- for (nport = 0; nport < priv->hw_data->num_txports; nport++) {
+ for (nport = 0; nport < priv->hw_data->num_txports; ++nport) {
struct ub960_txport *txport = priv->txports[nport];
if (!txport)
@@ -3368,14 +3248,14 @@ static void ub960_rxport_free_ports(struct ub960_data *priv)
{
unsigned int nport;
- for (nport = 0; nport < priv->hw_data->num_rxports; nport++) {
+ for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
struct ub960_rxport *rxport = priv->rxports[nport];
if (!rxport)
continue;
- fwnode_handle_put(rxport->source_ep_fwnode);
- fwnode_handle_put(rxport->remote_fwnode);
+ fwnode_handle_put(rxport->source.ep_fwnode);
+ fwnode_handle_put(rxport->ser.fwnode);
kfree(rxport);
priv->rxports[nport] = NULL;
@@ -3386,6 +3266,7 @@ static int ub960_parse_dt_base(struct ub960_data *priv)
{
struct device *dev = &priv->client->dev;
size_t table_size;
+ unsigned int i;
u16 *aliases;
int ret;
@@ -3397,15 +3278,15 @@ static int ub960_parse_dt_base(struct ub960_data *priv)
}
table_size = ret;
- priv->atr_alias_table.num_entries = ret;
+ priv->atr.num_aliases = ret;
if (!table_size)
return 0;
- priv->atr_alias_table.entries =
- devm_kcalloc(dev, table_size,
- sizeof(struct atr_alias_table_entry), GFP_KERNEL);
- if (!priv->atr_alias_table.entries)
+ priv->atr.aliases = devm_kcalloc(dev, table_size,
+ sizeof(struct atr_alias_table_entry),
+ GFP_KERNEL);
+ if (!priv->atr.aliases)
return -ENOMEM;
aliases = kcalloc(table_size, sizeof(u16), GFP_KERNEL);
@@ -3421,8 +3302,8 @@ static int ub960_parse_dt_base(struct ub960_data *priv)
return ret;
}
- for (unsigned int i = 0; i < table_size; ++i)
- priv->atr_alias_table.entries[i].alias_id = aliases[i];
+ for (i = 0; i < table_size; ++i)
+ priv->atr.aliases[i].alias_id = aliases[i];
kfree(aliases);
@@ -3445,12 +3326,12 @@ ub960_parse_dt_rxport_link_properties(struct ub960_data *priv,
u32 ser_i2c_alias;
int ret;
+ cdr_mode = RXPORT_CDR_FPD3;
+
ret = fwnode_property_read_u32(link_fwnode, "ti,cdr-mode", &cdr_mode);
- if (ret == -EINVAL) {
- cdr_mode = RXPORT_CDR_FPD3;
- } else if (ret < 0) {
- dev_err(dev, "rx%u: failed to read 'ti,cdr-mode': %d\n", nport,
- ret);
+ if (ret < 0 && ret != -EINVAL) {
+ dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
+ "ti,cdr-mode", ret);
return ret;
}
@@ -3468,8 +3349,8 @@ ub960_parse_dt_rxport_link_properties(struct ub960_data *priv,
ret = fwnode_property_read_u32(link_fwnode, "ti,rx-mode", &rx_mode);
if (ret < 0) {
- dev_err(dev, "rx%u: failed to read 'ti,rx-mode': %d\n", nport,
- ret);
+ dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
+ "ti,rx-mode", ret);
return ret;
}
@@ -3478,6 +3359,17 @@ ub960_parse_dt_rxport_link_properties(struct ub960_data *priv,
return -EINVAL;
}
+ switch (rx_mode) {
+ case RXPORT_MODE_RAW12_HF:
+ case RXPORT_MODE_RAW12_LF:
+ case RXPORT_MODE_CSI2_ASYNC:
+ dev_err(dev, "rx%u: unsupported 'ti,rx-mode' %u\n", nport,
+ rx_mode);
+ return -EINVAL;
+ default:
+ break;
+ }
+
rxport->rx_mode = rx_mode;
/* EQ & Strobe related */
@@ -3491,9 +3383,8 @@ ub960_parse_dt_rxport_link_properties(struct ub960_data *priv,
&strobe_pos);
if (ret) {
if (ret != -EINVAL) {
- dev_err(dev,
- "rx%u: failed to read 'ti,strobe-pos': %d\n",
- nport, ret);
+ dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
+ "ti,strobe-pos", ret);
return ret;
}
} else if (strobe_pos < UB960_MIN_MANUAL_STROBE_POS ||
@@ -3512,8 +3403,8 @@ ub960_parse_dt_rxport_link_properties(struct ub960_data *priv,
ret = fwnode_property_read_u32(link_fwnode, "ti,eq-level", &eq_level);
if (ret) {
if (ret != -EINVAL) {
- dev_err(dev, "rx%u: failed to read 'ti,eq-level': %d\n",
- nport, ret);
+ dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
+ "ti,eq-level", ret);
return ret;
}
} else if (eq_level > UB960_MAX_EQ_LEVEL) {
@@ -3527,14 +3418,14 @@ ub960_parse_dt_rxport_link_properties(struct ub960_data *priv,
ret = fwnode_property_read_u32(link_fwnode, "i2c-alias",
&ser_i2c_alias);
if (ret) {
- dev_err(dev, "rx%u: failed to read 'i2c-alias': %d\n", nport,
- ret);
+ dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
+ "i2c-alias", ret);
return ret;
}
- rxport->ser_alias = ser_i2c_alias;
+ rxport->ser.alias = ser_i2c_alias;
- rxport->remote_fwnode = fwnode_get_named_child_node(link_fwnode, "serializer");
- if (!rxport->remote_fwnode) {
+ rxport->ser.fwnode = fwnode_get_named_child_node(link_fwnode, "serializer");
+ if (!rxport->ser.fwnode) {
dev_err(dev, "rx%u: missing 'serializer' node\n", nport);
return -EINVAL;
}
@@ -3547,12 +3438,14 @@ static int ub960_parse_dt_rxport_ep_properties(struct ub960_data *priv,
struct ub960_rxport *rxport)
{
struct device *dev = &priv->client->dev;
+ struct v4l2_fwnode_endpoint vep = {};
unsigned int nport = rxport->nport;
+ bool hsync_hi;
+ bool vsync_hi;
int ret;
- u32 v;
- rxport->source_ep_fwnode = fwnode_graph_get_remote_endpoint(ep_fwnode);
- if (!rxport->source_ep_fwnode) {
+ rxport->source.ep_fwnode = fwnode_graph_get_remote_endpoint(ep_fwnode);
+ if (!rxport->source.ep_fwnode) {
dev_err(dev, "rx%u: no remote endpoint\n", nport);
return -ENODEV;
}
@@ -3568,28 +3461,24 @@ static int ub960_parse_dt_rxport_ep_properties(struct ub960_data *priv,
return 0;
}
- ret = fwnode_property_read_u32(ep_fwnode, "hsync-active", &v);
+ vep.bus_type = V4L2_MBUS_PARALLEL;
+ ret = v4l2_fwnode_endpoint_parse(ep_fwnode, &vep);
if (ret) {
- dev_err(dev, "rx%u: failed to parse 'hsync-active': %d\n",
- nport, ret);
+ dev_err(dev, "rx%u: failed to parse endpoint data\n", nport);
goto err_put_source_ep_fwnode;
}
- rxport->lv_fv_pol |= v ? UB960_RR_PORT_CONFIG2_LV_POL_LOW : 0;
+ hsync_hi = !!(vep.bus.parallel.flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH);
+ vsync_hi = !!(vep.bus.parallel.flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH);
- ret = fwnode_property_read_u32(ep_fwnode, "vsync-active", &v);
- if (ret) {
- dev_err(dev, "rx%u: failed to parse 'vsync-active': %d\n",
- nport, ret);
- goto err_put_source_ep_fwnode;
- }
-
- rxport->lv_fv_pol |= v ? UB960_RR_PORT_CONFIG2_FV_POL_LOW : 0;
+ /* LineValid and FrameValid are inverse to the h/vsync active */
+ rxport->lv_fv_pol = (hsync_hi ? UB960_RR_PORT_CONFIG2_LV_POL_LOW : 0) |
+ (vsync_hi ? UB960_RR_PORT_CONFIG2_FV_POL_LOW : 0);
return 0;
err_put_source_ep_fwnode:
- fwnode_handle_put(rxport->source_ep_fwnode);
+ fwnode_handle_put(rxport->source.ep_fwnode);
return ret;
}
@@ -3597,8 +3486,8 @@ static int ub960_parse_dt_rxport(struct ub960_data *priv, unsigned int nport,
struct fwnode_handle *link_fwnode,
struct fwnode_handle *ep_fwnode)
{
- const char *vpoc_names[UB960_MAX_RX_NPORTS] = { "vpoc0", "vpoc1",
- "vpoc2", "vpoc3" };
+ static const char *vpoc_names[UB960_MAX_RX_NPORTS] = { "vpoc0", "vpoc1",
+ "vpoc2", "vpoc3" };
struct device *dev = &priv->client->dev;
struct ub960_rxport *rxport;
int ret;
@@ -3635,7 +3524,7 @@ static int ub960_parse_dt_rxport(struct ub960_data *priv, unsigned int nport,
return 0;
err_put_remote_fwnode:
- fwnode_handle_put(rxport->remote_fwnode);
+ fwnode_handle_put(rxport->ser.fwnode);
err_free_rxport:
priv->rxports[nport] = NULL;
kfree(rxport);
@@ -3661,10 +3550,8 @@ ub960_fwnode_get_link_by_regs(struct fwnode_handle *links_fwnode,
return NULL;
}
- if (nport == link_num) {
- fwnode_handle_put(link_fwnode);
+ if (nport == link_num)
return link_fwnode;
- }
}
return NULL;
@@ -3733,10 +3620,11 @@ static int ub960_parse_dt_txports(struct ub960_data *priv)
int ret;
for (nport = 0; nport < priv->hw_data->num_txports; ++nport) {
+ unsigned int port = nport + priv->hw_data->num_rxports;
struct fwnode_handle *ep_fwnode;
ep_fwnode = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev),
- nport + priv->hw_data->num_rxports, 0, 0);
+ port, 0, 0);
if (!ep_fwnode)
continue;
@@ -3787,40 +3675,34 @@ static int ub960_notify_bound(struct v4l2_async_notifier *notifier,
int ret;
ret = media_entity_get_fwnode_pad(&subdev->entity,
- rxport->source_ep_fwnode,
+ rxport->source.ep_fwnode,
MEDIA_PAD_FL_SOURCE);
if (ret < 0) {
dev_err(dev, "Failed to find pad for %s\n", subdev->name);
return ret;
}
- rxport->source_sd = subdev;
- rxport->source_sd_pad = ret;
+ rxport->source.sd = subdev;
+ rxport->source.pad = ret;
- ret = media_create_pad_link(&rxport->source_sd->entity,
- rxport->source_sd_pad, &priv->sd.entity,
- nport,
+ ret = media_create_pad_link(&rxport->source.sd->entity,
+ rxport->source.pad, &priv->sd.entity, nport,
MEDIA_LNK_FL_ENABLED |
MEDIA_LNK_FL_IMMUTABLE);
if (ret) {
dev_err(dev, "Unable to link %s:%u -> %s:%u\n",
- rxport->source_sd->name, rxport->source_sd_pad,
+ rxport->source.sd->name, rxport->source.pad,
priv->sd.name, nport);
return ret;
}
- dev_dbg(dev, "Bound %s pad: %u on index %u\n", subdev->name,
- rxport->source_sd_pad, nport);
-
for (i = 0; i < priv->hw_data->num_rxports; ++i) {
- if (priv->rxports[i] && !priv->rxports[i]->source_sd) {
+ if (priv->rxports[i] && !priv->rxports[i]->source.sd) {
dev_dbg(dev, "Waiting for more subdevs to be bound\n");
return 0;
}
}
- dev_dbg(dev, "All subdevs bound\n");
-
return 0;
}
@@ -3830,7 +3712,7 @@ static void ub960_notify_unbind(struct v4l2_async_notifier *notifier,
{
struct ub960_rxport *rxport = to_ub960_asd(asd)->rxport;
- rxport->source_sd = NULL;
+ rxport->source.sd = NULL;
}
static const struct v4l2_async_notifier_operations ub960_notify_ops = {
@@ -3854,7 +3736,7 @@ static int ub960_v4l2_notifier_register(struct ub960_data *priv)
continue;
asd = v4l2_async_nf_add_fwnode(&priv->notifier,
- rxport->source_ep_fwnode,
+ rxport->source.ep_fwnode,
struct ub960_asd);
if (IS_ERR(asd)) {
dev_err(dev, "Failed to add subdev for source %u: %pe",
@@ -3891,14 +3773,10 @@ static int ub960_create_subdev(struct ub960_data *priv)
int ret;
v4l2_i2c_subdev_init(&priv->sd, priv->client, &ub960_subdev_ops);
+
v4l2_ctrl_handler_init(&priv->ctrl_handler, 1);
priv->sd.ctrl_handler = &priv->ctrl_handler;
- v4l2_ctrl_new_std_menu_items(&priv->ctrl_handler, &ub960_ctrl_ops,
- V4L2_CID_TEST_PATTERN,
- ARRAY_SIZE(ub960_tpg_qmenu) - 1, 0, 0,
- ub960_tpg_qmenu);
-
v4l2_ctrl_new_int_menu(&priv->ctrl_handler, NULL, V4L2_CID_LINK_FREQ,
ARRAY_SIZE(priv->tx_link_freq) - 1, 0,
priv->tx_link_freq);
@@ -3913,7 +3791,7 @@ static int ub960_create_subdev(struct ub960_data *priv)
priv->sd.entity.function = MEDIA_ENT_F_VID_IF_BRIDGE;
priv->sd.entity.ops = &ub960_entity_ops;
- for (i = 0; i < priv->hw_data->num_rxports + priv->hw_data->num_txports; i++) {
+ for (i = 0; i < priv->hw_data->num_rxports + priv->hw_data->num_txports; ++i) {
priv->pads[i].flags = ub960_pad_is_sink(priv, i) ?
MEDIA_PAD_FL_SINK :
MEDIA_PAD_FL_SOURCE;
@@ -3935,7 +3813,7 @@ static int ub960_create_subdev(struct ub960_data *priv)
ret = ub960_v4l2_notifier_register(priv);
if (ret) {
dev_err(dev, "v4l2 subdev notifier register failed: %d\n", ret);
- goto err_free_state;
+ goto err_subdev_cleanup;
}
ret = v4l2_async_register_subdev(&priv->sd);
@@ -3948,7 +3826,7 @@ static int ub960_create_subdev(struct ub960_data *priv)
err_unreg_notif:
ub960_v4l2_notifier_unregister(priv);
-err_free_state:
+err_subdev_cleanup:
v4l2_subdev_cleanup(&priv->sd);
err_entity_cleanup:
media_entity_cleanup(&priv->sd.entity);
@@ -4057,10 +3935,10 @@ static int ub960_enable_core_hw(struct ub960_data *priv)
if (priv->pd_gpio) {
gpiod_set_value_cansleep(priv->pd_gpio, 1);
/* wait min 2 ms for reset to complete */
- usleep_range(2000, 5000);
+ fsleep(2000);
gpiod_set_value_cansleep(priv->pd_gpio, 0);
/* wait min 2 ms for power up to finish */
- usleep_range(2000, 5000);
+ fsleep(2000);
}
ub960_reset(priv, true);
@@ -4088,7 +3966,18 @@ static int ub960_enable_core_hw(struct ub960_data *priv)
clk_get_rate(priv->refclk) / 1000000);
/* Disable all RX ports by default */
- ub960_write(priv, UB960_SR_RX_PORT_CTL, 0);
+ ret = ub960_write(priv, UB960_SR_RX_PORT_CTL, 0);
+ if (ret)
+ goto err_pd_gpio;
+
+ /* release GPIO lock */
+ if (priv->hw_data->is_ub9702) {
+ ret = ub960_update_bits(priv, UB960_SR_RESET,
+ UB960_SR_RESET_GPIO_LOCK_RELEASE,
+ UB960_SR_RESET_GPIO_LOCK_RELEASE);
+ if (ret)
+ goto err_pd_gpio;
+ }
return 0;
@@ -4112,6 +4001,9 @@ static int ub960_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct ub960_data *priv;
+ unsigned int port_lock_mask;
+ unsigned int port_mask;
+ unsigned int nport;
int ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
@@ -4123,7 +4015,7 @@ static int ub960_probe(struct i2c_client *client)
priv->hw_data = device_get_match_data(dev);
mutex_init(&priv->reg_lock);
- mutex_init(&priv->atr_alias_table.lock);
+ mutex_init(&priv->atr.lock);
INIT_DELAYED_WORK(&priv->poll_work, ub960_handler_work);
@@ -4131,11 +4023,9 @@ static int ub960_probe(struct i2c_client *client)
* Initialize these to invalid values so that the first reg writes will
* configure the target.
*/
- priv->current_indirect_target = 0xff;
- priv->current_read_rxport = 0xff;
- priv->current_write_rxport_mask = 0xff;
- priv->current_read_csiport = 0xff;
- priv->current_write_csiport_mask = 0xff;
+ priv->reg_current.indirect_target = 0xff;
+ priv->reg_current.rxport = 0xff;
+ priv->reg_current.txport = 0xff;
ret = ub960_get_hw_resources(priv);
if (ret)
@@ -4145,12 +4035,6 @@ static int ub960_probe(struct i2c_client *client)
if (ret)
goto err_mutex_destroy;
- /* release GPIO lock */
- if (priv->hw_data->is_ub9702)
- ub960_update_bits(priv, UB960_SR_RESET,
- UB960_SR_RESET_GPIO_LOCK_RELEASE,
- UB960_SR_RESET_GPIO_LOCK_RELEASE);
-
ret = ub960_parse_dt(priv);
if (ret)
goto err_disable_core_hw;
@@ -4169,7 +4053,26 @@ static int ub960_probe(struct i2c_client *client)
ub960_reset(priv, false);
- ub960_rxport_wait_locks(priv, GENMASK(3, 0), NULL);
+ port_mask = 0;
+
+ for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ struct ub960_rxport *rxport = priv->rxports[nport];
+
+ if (!rxport)
+ continue;
+
+ port_mask |= BIT(nport);
+ }
+
+ ret = ub960_rxport_wait_locks(priv, port_mask, &port_lock_mask);
+ if (ret)
+ goto err_disable_vpocs;
+
+ if (port_mask != port_lock_mask) {
+ ret = -EIO;
+ dev_err_probe(dev, ret, "Failed to lock all RX ports\n");
+ goto err_disable_vpocs;
+ }
/*
* Clear any errors caused by switching the RX port settings while
@@ -4209,7 +4112,7 @@ static int ub960_probe(struct i2c_client *client)
err_disable_core_hw:
ub960_disable_core_hw(priv);
err_mutex_destroy:
- mutex_destroy(&priv->atr_alias_table.lock);
+ mutex_destroy(&priv->atr.lock);
mutex_destroy(&priv->reg_lock);
return ret;
}
@@ -4228,7 +4131,7 @@ static void ub960_remove(struct i2c_client *client)
ub960_rxport_free_ports(priv);
ub960_txport_free_ports(priv);
ub960_disable_core_hw(priv);
- mutex_destroy(&priv->atr_alias_table.lock);
+ mutex_destroy(&priv->atr.lock);
mutex_destroy(&priv->reg_lock);
}
diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index dd3c2d86f96e..e513b859a7df 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -1661,10 +1661,11 @@ int v4l2_subdev_routing_validate(struct v4l2_subdev *sd,
}
/*
- * V4L2_SUBDEV_ROUTING_NO_STREAM_MIX: Streams on the same pad
- * may not be routed to streams on different pads.
+ * V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX: Streams on the same
+ * sink pad may not be routed to streams on different source
+ * pads.
*/
- if (disallow & V4L2_SUBDEV_ROUTING_NO_STREAM_MIX) {
+ if (disallow & V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX) {
if (remote_pads[route->sink_pad] != U32_MAX &&
remote_pads[route->sink_pad] != route->source_pad) {
dev_dbg(sd->dev,
@@ -1673,6 +1674,15 @@ int v4l2_subdev_routing_validate(struct v4l2_subdev *sd,
goto out;
}
+ remote_pads[route->sink_pad] = route->source_pad;
+ }
+
+ /*
+ * V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX: Streams on the same
+ * source pad may not be routed to streams on different sink
+ * pads.
+ */
+ if (disallow & V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX) {
if (remote_pads[route->source_pad] != U32_MAX &&
remote_pads[route->source_pad] != route->sink_pad) {
dev_dbg(sd->dev,
@@ -1681,7 +1691,6 @@ int v4l2_subdev_routing_validate(struct v4l2_subdev *sd,
goto out;
}
- remote_pads[route->sink_pad] = route->source_pad;
remote_pads[route->source_pad] = route->sink_pad;
}
diff --git a/include/linux/i2c-atr.h b/include/linux/i2c-atr.h
index 721d08a6ff9b..7596f70ce1ab 100644
--- a/include/linux/i2c-atr.h
+++ b/include/linux/i2c-atr.h
@@ -67,6 +67,8 @@ void i2c_atr_delete(struct i2c_atr *atr);
* @atr: The I2C ATR
* @chan_id: Index of the new adapter (0 .. max_adapters-1). This value is
* passed to the callbacks in `struct i2c_atr_ops`.
+ * @adapter_parent: The device used as the parent of the new i2c adapter, or NULL
+ * to use the i2c-atr device as the parent.
* @bus_handle: The fwnode handle that points to the adapter's i2c
* peripherals, or NULL.
*
@@ -84,6 +86,7 @@ void i2c_atr_delete(struct i2c_atr *atr);
* Return: 0 on success, a negative error code otherwise.
*/
int i2c_atr_add_adapter(struct i2c_atr *atr, u32 chan_id,
+ struct device *adapter_parent,
struct fwnode_handle *bus_handle);
/**
diff --git a/include/media/i2c/ds90ub9xx.h b/include/media/i2c/ds90ub9xx.h
index 42d47d732c03..0245198469ec 100644
--- a/include/media/i2c/ds90ub9xx.h
+++ b/include/media/i2c/ds90ub9xx.h
@@ -7,6 +7,12 @@
struct i2c_atr;
+/**
+ * struct ds90ub9xx_platform_data - platform data for FPD-Link Serializers.
+ * @port: Deserializer RX port for this Serializer
+ * @atr: I2C ATR
+ * @bc_rate: back-channel clock rate
+ */
struct ds90ub9xx_platform_data {
u32 port;
struct i2c_atr *atr;
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index 6a77aa9bb1da..f11103122e53 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -1638,19 +1638,29 @@ u64 v4l2_subdev_state_xlate_streams(const struct v4l2_subdev_state *state,
* @V4L2_SUBDEV_ROUTING_NO_N_TO_1:
* multiple input streams may not be routed to the same output stream
* (stream merging)
- * @V4L2_SUBDEV_ROUTING_NO_STREAM_MIX:
- * streams on the same pad may not be routed to streams on different pads
+ * @V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX:
+ * streams on the same sink pad may not be routed to streams on different
+ * source pads
+ * @V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX:
+ * streams on the same source pad may not be routed to streams on different
+ * sink pads
* @V4L2_SUBDEV_ROUTING_ONLY_1_TO_1:
* only non-overlapping 1-to-1 stream routing is allowed (a combination of
* @V4L2_SUBDEV_ROUTING_NO_1_TO_N and @V4L2_SUBDEV_ROUTING_NO_N_TO_1)
+ * @V4L2_SUBDEV_ROUTING_NO_STREAM_MIX:
+ * streams on the same pad may not be routed to streams on different pads
*/
enum v4l2_subdev_routing_restriction {
V4L2_SUBDEV_ROUTING_NO_1_TO_N = BIT(0),
V4L2_SUBDEV_ROUTING_NO_N_TO_1 = BIT(1),
- V4L2_SUBDEV_ROUTING_NO_STREAM_MIX = BIT(2),
+ V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX = BIT(2),
+ V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX = BIT(3),
V4L2_SUBDEV_ROUTING_ONLY_1_TO_1 =
V4L2_SUBDEV_ROUTING_NO_1_TO_N |
V4L2_SUBDEV_ROUTING_NO_N_TO_1,
+ V4L2_SUBDEV_ROUTING_NO_STREAM_MIX =
+ V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX |
+ V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX,
};
/**
--
2.34.1
^ permalink raw reply related [flat|nested] 16+ messages in thread* [PATCH v9 1/8] i2c: add I2C Address Translator (ATR) support
2023-02-16 14:07 [PATCH v9 0/8] i2c-atr and FPDLink Tomi Valkeinen
@ 2023-02-16 14:07 ` Tomi Valkeinen
2023-02-16 14:07 ` [PATCH v9 2/8] media: subdev: Split V4L2_SUBDEV_ROUTING_NO_STREAM_MIX Tomi Valkeinen
` (7 subsequent siblings)
8 siblings, 0 replies; 16+ messages in thread
From: Tomi Valkeinen @ 2023-02-16 14:07 UTC (permalink / raw)
To: linux-media, devicetree, linux-kernel, linux-i2c, Rob Herring,
Krzysztof Kozlowski, Wolfram Sang, Luca Ceresoli,
Andy Shevchenko, Matti Vaittinen, Laurent Pinchart
Cc: Mauro Carvalho Chehab, Peter Rosin, Liam Girdwood, Mark Brown,
Sakari Ailus, Michael Tretter, Shawn Tu, Hans Verkuil,
Mike Pagano, Krzysztof Hałasa, Marek Vasut,
Satish Nagireddy, Luca Ceresoli, Tomi Valkeinen
From: Luca Ceresoli <luca@lucaceresoli.net>
An ATR is a device that looks similar to an i2c-mux: it has an I2C
slave "upstream" port and N master "downstream" ports, and forwards
transactions from upstream to the appropriate downstream port. But it
is different in that the forwarded transaction has a different slave
address. The address used on the upstream bus is called the "alias"
and is (potentially) different from the physical slave address of the
downstream chip.
Add a helper file (just like i2c-mux.c for a mux or switch) to allow
implementing ATR features in a device driver. The helper takes care or
adapter creation/destruction and translates addresses at each transaction.
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
---
Documentation/i2c/index.rst | 1 +
Documentation/i2c/muxes/i2c-atr.rst | 97 +++++
MAINTAINERS | 8 +
drivers/i2c/Kconfig | 9 +
drivers/i2c/Makefile | 1 +
drivers/i2c/i2c-atr.c | 545 ++++++++++++++++++++++++++++
include/linux/i2c-atr.h | 116 ++++++
7 files changed, 777 insertions(+)
create mode 100644 Documentation/i2c/muxes/i2c-atr.rst
create mode 100644 drivers/i2c/i2c-atr.c
create mode 100644 include/linux/i2c-atr.h
diff --git a/Documentation/i2c/index.rst b/Documentation/i2c/index.rst
index 6270f1fd7d4e..aaf33d1315f4 100644
--- a/Documentation/i2c/index.rst
+++ b/Documentation/i2c/index.rst
@@ -16,6 +16,7 @@ Introduction
instantiating-devices
busses/index
i2c-topology
+ muxes/i2c-atr
muxes/i2c-mux-gpio
i2c-sysfs
diff --git a/Documentation/i2c/muxes/i2c-atr.rst b/Documentation/i2c/muxes/i2c-atr.rst
new file mode 100644
index 000000000000..da226fd4de63
--- /dev/null
+++ b/Documentation/i2c/muxes/i2c-atr.rst
@@ -0,0 +1,97 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+=====================
+Kernel driver i2c-atr
+=====================
+
+Author: Luca Ceresoli <luca@lucaceresoli.net>
+Author: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+
+Description
+-----------
+
+An I2C Address Translator (ATR) is a device with an I2C slave parent
+("upstream") port and N I2C master child ("downstream") ports, and
+forwards transactions from upstream to the appropriate downstream port
+with a modified slave address. The address used on the parent bus is
+called the "alias" and is (potentially) different from the physical
+slave address of the child bus. Address translation is done by the
+hardware.
+
+An ATR looks similar to an i2c-mux except:
+ - the address on the parent and child busses can be different
+ - there is normally no need to select the child port; the alias used on the
+ parent bus implies it
+
+The ATR functionality can be provided by a chip with many other
+features. This file provides a helper to implement an ATR within your
+driver.
+
+The ATR creates a new I2C "child" adapter on each child bus. Adding
+devices on the child bus ends up in invoking the driver code to select
+an available alias. Maintaining an appropriate pool of available aliases
+and picking one for each new device is up to the driver implementer. The
+ATR maintains an table of currently assigned alias and uses it to modify
+all I2C transactions directed to devices on the child buses.
+
+A typical example follows.
+
+Topology::
+
+ Slave X @ 0x10
+ .-----. |
+ .-----. | |---+---- B
+ | CPU |--A--| ATR |
+ `-----' | |---+---- C
+ `-----' |
+ Slave Y @ 0x10
+
+Alias table:
+
+A, B and C are three physical I2C busses, electrically independent from
+each other. The ATR receives the transactions initiated on bus A and
+propagates them on bus B or bus C or none depending on the device address
+in the transaction and based on the alias table.
+
+Alias table:
+
+.. table::
+
+ =============== =====
+ Client Alias
+ =============== =====
+ X (bus B, 0x10) 0x20
+ Y (bus C, 0x10) 0x30
+ =============== =====
+
+Transaction:
+
+ - Slave X driver sends a transaction (on adapter B), slave address 0x10
+ - ATR driver finds slave X is on bus B and has alias 0x20, rewrites
+ messages with address 0x20, forwards to adapter A
+ - Physical I2C transaction on bus A, slave address 0x20
+ - ATR chip detects transaction on address 0x20, finds it in table,
+ propagates transaction on bus B with address translated to 0x10,
+ keeps clock streched on bus A waiting for reply
+ - Slave X chip (on bus B) detects transaction at its own physical
+ address 0x10 and replies normally
+ - ATR chip stops clock stretching and forwards reply on bus A,
+ with address translated back to 0x20
+ - ATR driver receives the reply, rewrites messages with address 0x10
+ as they were initially
+ - Slave X driver gets back the msgs[], with reply and address 0x10
+
+Usage:
+
+ 1. In your driver (typically in the probe function) add an ATR by
+ calling i2c_atr_new() passing your attach/detach callbacks
+ 2. When the attach callback is called pick an appropriate alias,
+ configure it in your chip and return the chosen alias in the
+ alias_id parameter
+ 3. When the detach callback is called, deconfigure the alias from
+ your chip and put it back in the pool for later usage
+
+I2C ATR functions and data structures
+-------------------------------------
+
+.. kernel-doc:: include/linux/i2c-atr.h
diff --git a/MAINTAINERS b/MAINTAINERS
index 1daadaa4d48b..ba716f2861cf 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9563,6 +9563,14 @@ L: linux-acpi@vger.kernel.org
S: Maintained
F: drivers/i2c/i2c-core-acpi.c
+I2C ADDRESS TRANSLATOR (ATR)
+M: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+R: Luca Ceresoli <luca.ceresoli@bootlin.com>
+L: linux-i2c@vger.kernel.org
+S: Maintained
+F: drivers/i2c/i2c-atr.c
+F: include/linux/i2c-atr.h
+
I2C CONTROLLER DRIVER FOR NVIDIA GPU
M: Ajay Gupta <ajayg@nvidia.com>
L: linux-i2c@vger.kernel.org
diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig
index 438905e2a1d0..c6d1a345ea6d 100644
--- a/drivers/i2c/Kconfig
+++ b/drivers/i2c/Kconfig
@@ -71,6 +71,15 @@ config I2C_MUX
source "drivers/i2c/muxes/Kconfig"
+config I2C_ATR
+ tristate "I2C Address Translator (ATR) support"
+ help
+ Enable support for I2C Address Translator (ATR) chips.
+
+ An ATR allows accessing multiple I2C busses from a single
+ physical bus via address translation instead of bus selection as
+ i2c-muxes do.
+
config I2C_HELPER_AUTO
bool "Autoselect pertinent helper modules"
default y
diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile
index c1d493dc9bac..3f71ce4711e3 100644
--- a/drivers/i2c/Makefile
+++ b/drivers/i2c/Makefile
@@ -13,6 +13,7 @@ i2c-core-$(CONFIG_OF) += i2c-core-of.o
obj-$(CONFIG_I2C_SMBUS) += i2c-smbus.o
obj-$(CONFIG_I2C_CHARDEV) += i2c-dev.o
obj-$(CONFIG_I2C_MUX) += i2c-mux.o
+obj-$(CONFIG_I2C_ATR) += i2c-atr.o
obj-y += algos/ busses/ muxes/
obj-$(CONFIG_I2C_STUB) += i2c-stub.o
obj-$(CONFIG_I2C_SLAVE_EEPROM) += i2c-slave-eeprom.o
diff --git a/drivers/i2c/i2c-atr.c b/drivers/i2c/i2c-atr.c
new file mode 100644
index 000000000000..a41e941ad972
--- /dev/null
+++ b/drivers/i2c/i2c-atr.c
@@ -0,0 +1,545 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * I2C Address Translator
+ *
+ * Copyright (c) 2019,2022 Luca Ceresoli <luca@lucaceresoli.net>
+ * Copyright (c) 2022,2023 Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+ *
+ * Originally based on i2c-mux.c
+ */
+
+#include <linux/fwnode.h>
+#include <linux/i2c-atr.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+
+#define ATR_MAX_ADAPTERS 100 /* Just a sanity limit */
+#define ATR_MAX_SYMLINK_LEN 11 /* Longest name is 10 chars: "channel-99" */
+
+/**
+ * struct i2c_atr_cli2alias_pair - Holds the alias assigned to a client.
+ * @node: List node
+ * @client: Pointer to the client on the child bus
+ * @alias: I2C alias address assigned by the driver.
+ * This is the address that will be used to issue I2C transactions
+ * on the parent (physical) bus.
+ */
+struct i2c_atr_cli2alias_pair {
+ struct list_head node;
+ const struct i2c_client *client;
+ u16 alias;
+};
+
+/**
+ * struct i2c_atr_chan - Data for a channel.
+ * @adap: The &struct i2c_adapter for the channel
+ * @atr: The parent I2C ATR
+ * @chan_id: The ID of this channel
+ * @alias_list: List of @struct i2c_atr_cli2alias_pair containing the
+ * assigned aliases
+ * @orig_addrs_lock: Mutex protecting @orig_addrs
+ * @orig_addrs: Buffer used to store the original addresses during transmit
+ * @orig_addrs_size: Size of @orig_addrs
+ */
+struct i2c_atr_chan {
+ struct i2c_adapter adap;
+ struct i2c_atr *atr;
+ u32 chan_id;
+
+ struct list_head alias_list;
+
+ /* Lock orig_addrs during xfer */
+ struct mutex orig_addrs_lock;
+ u16 *orig_addrs;
+ unsigned int orig_addrs_size;
+};
+
+/**
+ * struct i2c_atr - The I2C ATR instance
+ * @parent: The parent &struct i2c_adapter
+ * @dev: The device that owns the I2C ATR instance
+ * @ops: &struct i2c_atr_ops
+ * @priv: Private driver data, set with i2c_atr_set_driver_data()
+ * @algo: The &struct i2c_algorithm for adapters
+ * @lock: Lock for the I2C bus segment (see &struct i2c_lock_operations)
+ * @max_adapters: Maximum number of adapters this I2C ATR can have
+ * @adapter: Array of adapters
+ */
+struct i2c_atr {
+ struct i2c_adapter *parent;
+ struct device *dev;
+ const struct i2c_atr_ops *ops;
+
+ void *priv;
+
+ struct i2c_algorithm algo;
+ /* lock for the I2C bus segment (see struct i2c_lock_operations) */
+ struct mutex lock;
+ int max_adapters;
+
+ struct notifier_block i2c_nb;
+
+ struct i2c_adapter *adapter[];
+};
+
+static struct i2c_atr_cli2alias_pair *
+i2c_atr_find_mapping_by_client(const struct list_head *list,
+ const struct i2c_client *client)
+{
+ struct i2c_atr_cli2alias_pair *c2a;
+
+ list_for_each_entry(c2a, list, node) {
+ if (c2a->client == client)
+ return c2a;
+ }
+
+ return NULL;
+}
+
+static struct i2c_atr_cli2alias_pair *
+i2c_atr_find_mapping_by_addr(const struct list_head *list, u16 phys_addr)
+{
+ struct i2c_atr_cli2alias_pair *c2a;
+
+ list_for_each_entry(c2a, list, node) {
+ if (c2a->client->addr == phys_addr)
+ return c2a;
+ }
+
+ return NULL;
+}
+
+/*
+ * Replace all message addresses with their aliases, saving the original
+ * addresses.
+ *
+ * This function is internal for use in i2c_atr_master_xfer(). It must be
+ * followed by i2c_atr_unmap_msgs() to restore the original addresses.
+ */
+static int i2c_atr_map_msgs(struct i2c_atr_chan *chan, struct i2c_msg *msgs,
+ int num)
+{
+ struct i2c_atr *atr = chan->atr;
+ static struct i2c_atr_cli2alias_pair *c2a;
+ int i;
+
+ /* Ensure we have enough room to save the original addresses */
+ if (unlikely(chan->orig_addrs_size < num)) {
+ u16 *new_buf;
+
+ /* We don't care about old data, hence no realloc() */
+ new_buf = kmalloc_array(num, sizeof(*new_buf), GFP_KERNEL);
+ if (!new_buf)
+ return -ENOMEM;
+
+ kfree(chan->orig_addrs);
+ chan->orig_addrs = new_buf;
+ chan->orig_addrs_size = num;
+ }
+
+ for (i = 0; i < num; i++) {
+ chan->orig_addrs[i] = msgs[i].addr;
+
+ c2a = i2c_atr_find_mapping_by_addr(&chan->alias_list,
+ msgs[i].addr);
+ if (!c2a) {
+ dev_err(atr->dev, "client 0x%02x not mapped!\n",
+ msgs[i].addr);
+ return -ENXIO;
+ }
+
+ msgs[i].addr = c2a->alias;
+ }
+
+ return 0;
+}
+
+/*
+ * Restore all message address aliases with the original addresses. This
+ * function is internal for use in i2c_atr_master_xfer().
+ *
+ * @see i2c_atr_map_msgs()
+ */
+static void i2c_atr_unmap_msgs(struct i2c_atr_chan *chan, struct i2c_msg *msgs,
+ int num)
+{
+ int i;
+
+ for (i = 0; i < num; i++)
+ msgs[i].addr = chan->orig_addrs[i];
+}
+
+static int i2c_atr_master_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
+ int num)
+{
+ struct i2c_atr_chan *chan = adap->algo_data;
+ struct i2c_atr *atr = chan->atr;
+ struct i2c_adapter *parent = atr->parent;
+ int ret;
+
+ /* Translate addresses */
+ mutex_lock(&chan->orig_addrs_lock);
+
+ ret = i2c_atr_map_msgs(chan, msgs, num);
+ if (ret < 0)
+ goto err_unlock;
+
+ /* Perform the transfer */
+ ret = i2c_transfer(parent, msgs, num);
+
+ /* Restore addresses */
+ i2c_atr_unmap_msgs(chan, msgs, num);
+
+err_unlock:
+ mutex_unlock(&chan->orig_addrs_lock);
+
+ return ret;
+}
+
+static int i2c_atr_smbus_xfer(struct i2c_adapter *adap, u16 addr,
+ unsigned short flags, char read_write, u8 command,
+ int size, union i2c_smbus_data *data)
+{
+ struct i2c_atr_chan *chan = adap->algo_data;
+ struct i2c_atr *atr = chan->atr;
+ struct i2c_adapter *parent = atr->parent;
+ struct i2c_atr_cli2alias_pair *c2a;
+
+ c2a = i2c_atr_find_mapping_by_addr(&chan->alias_list, addr);
+ if (!c2a) {
+ dev_err(atr->dev, "client 0x%02x not mapped!\n", addr);
+ return -ENXIO;
+ }
+
+ return i2c_smbus_xfer(parent, c2a->alias, flags, read_write, command,
+ size, data);
+}
+
+static u32 i2c_atr_functionality(struct i2c_adapter *adap)
+{
+ struct i2c_atr_chan *chan = adap->algo_data;
+ struct i2c_adapter *parent = chan->atr->parent;
+
+ return parent->algo->functionality(parent);
+}
+
+static void i2c_atr_lock_bus(struct i2c_adapter *adapter, unsigned int flags)
+{
+ struct i2c_atr_chan *chan = adapter->algo_data;
+ struct i2c_atr *atr = chan->atr;
+
+ mutex_lock(&atr->lock);
+}
+
+static int i2c_atr_trylock_bus(struct i2c_adapter *adapter, unsigned int flags)
+{
+ struct i2c_atr_chan *chan = adapter->algo_data;
+ struct i2c_atr *atr = chan->atr;
+
+ return mutex_trylock(&atr->lock);
+}
+
+static void i2c_atr_unlock_bus(struct i2c_adapter *adapter, unsigned int flags)
+{
+ struct i2c_atr_chan *chan = adapter->algo_data;
+ struct i2c_atr *atr = chan->atr;
+
+ mutex_unlock(&atr->lock);
+}
+
+static const struct i2c_lock_operations i2c_atr_lock_ops = {
+ .lock_bus = i2c_atr_lock_bus,
+ .trylock_bus = i2c_atr_trylock_bus,
+ .unlock_bus = i2c_atr_unlock_bus,
+};
+
+static int i2c_atr_attach_client(struct i2c_adapter *adapter,
+ const struct i2c_client *client)
+{
+ struct i2c_atr_chan *chan = adapter->algo_data;
+ struct i2c_atr *atr = chan->atr;
+ struct i2c_atr_cli2alias_pair *c2a;
+ u16 alias_id;
+ int ret;
+
+ c2a = kzalloc(sizeof(*c2a), GFP_KERNEL);
+ if (!c2a)
+ return -ENOMEM;
+
+ ret = atr->ops->attach_client(atr, chan->chan_id, client, &alias_id);
+ if (ret)
+ goto err_free;
+
+ dev_dbg(atr->dev, "chan%u: client 0x%02x mapped at alias 0x%02x (%s)\n",
+ chan->chan_id, client->addr, alias_id, client->name);
+
+ c2a->client = client;
+ c2a->alias = alias_id;
+ list_add(&c2a->node, &chan->alias_list);
+
+ return 0;
+
+err_free:
+ kfree(c2a);
+
+ return ret;
+}
+
+static void i2c_atr_detach_client(struct i2c_adapter *adapter,
+ const struct i2c_client *client)
+{
+ struct i2c_atr_chan *chan = adapter->algo_data;
+ struct i2c_atr *atr = chan->atr;
+ struct i2c_atr_cli2alias_pair *c2a;
+
+ atr->ops->detach_client(atr, chan->chan_id, client);
+
+ c2a = i2c_atr_find_mapping_by_client(&chan->alias_list, client);
+ if (!c2a)
+ return; /* This shouldn't happen */
+
+ dev_dbg(atr->dev,
+ "chan%u: client 0x%02x unmapped from alias 0x%02x (%s)\n",
+ chan->chan_id, client->addr, c2a->alias, client->name);
+
+ list_del(&c2a->node);
+ kfree(c2a);
+}
+
+static int i2c_atr_bus_notifier_call(struct notifier_block *nb,
+ unsigned long event, void *device)
+{
+ struct i2c_atr *atr = container_of(nb, struct i2c_atr, i2c_nb);
+ struct device *dev = device;
+ struct i2c_client *client;
+ u32 chan_id;
+ int ret;
+
+ client = i2c_verify_client(dev);
+ if (!client)
+ return NOTIFY_DONE;
+
+ /* Is the client in one of our adapters? */
+ for (chan_id = 0; chan_id < atr->max_adapters; ++chan_id) {
+ if (client->adapter == atr->adapter[chan_id])
+ break;
+ }
+
+ if (chan_id == atr->max_adapters)
+ return NOTIFY_DONE;
+
+ switch (event) {
+ case BUS_NOTIFY_ADD_DEVICE:
+ ret = i2c_atr_attach_client(client->adapter, client);
+ if (ret)
+ dev_err(atr->dev,
+ "Failed to attach remote client '%s': %d\n",
+ dev_name(dev), ret);
+ break;
+
+ case BUS_NOTIFY_DEL_DEVICE:
+ i2c_atr_detach_client(client->adapter, client);
+ break;
+
+ default:
+ break;
+ }
+
+ return NOTIFY_DONE;
+}
+
+struct i2c_atr *i2c_atr_new(struct i2c_adapter *parent, struct device *dev,
+ const struct i2c_atr_ops *ops, int max_adapters)
+{
+ struct i2c_atr *atr;
+ int ret;
+
+ if (max_adapters > ATR_MAX_ADAPTERS)
+ return ERR_PTR(-EINVAL);
+
+ if (!ops || !ops->attach_client || !ops->detach_client)
+ return ERR_PTR(-EINVAL);
+
+ atr = kzalloc(struct_size(atr, adapter, max_adapters), GFP_KERNEL);
+ if (!atr)
+ return ERR_PTR(-ENOMEM);
+
+ mutex_init(&atr->lock);
+
+ atr->parent = parent;
+ atr->dev = dev;
+ atr->ops = ops;
+ atr->max_adapters = max_adapters;
+
+ if (parent->algo->master_xfer)
+ atr->algo.master_xfer = i2c_atr_master_xfer;
+ if (parent->algo->smbus_xfer)
+ atr->algo.smbus_xfer = i2c_atr_smbus_xfer;
+ atr->algo.functionality = i2c_atr_functionality;
+
+ atr->i2c_nb.notifier_call = i2c_atr_bus_notifier_call;
+ ret = bus_register_notifier(&i2c_bus_type, &atr->i2c_nb);
+ if (ret) {
+ mutex_destroy(&atr->lock);
+ return ERR_PTR(ret);
+ }
+
+ return atr;
+}
+EXPORT_SYMBOL_NS_GPL(i2c_atr_new, I2C_ATR);
+
+void i2c_atr_delete(struct i2c_atr *atr)
+{
+ bus_unregister_notifier(&i2c_bus_type, &atr->i2c_nb);
+ mutex_destroy(&atr->lock);
+ kfree(atr);
+}
+EXPORT_SYMBOL_NS_GPL(i2c_atr_delete, I2C_ATR);
+
+int i2c_atr_add_adapter(struct i2c_atr *atr, u32 chan_id,
+ struct device *adapter_parent,
+ struct fwnode_handle *bus_handle)
+{
+ struct i2c_adapter *parent = atr->parent;
+ struct device *dev = atr->dev;
+ struct i2c_atr_chan *chan;
+ char symlink_name[ATR_MAX_SYMLINK_LEN];
+ int ret;
+
+ if (chan_id >= atr->max_adapters) {
+ dev_err(dev, "No room for more i2c-atr adapters\n");
+ return -EINVAL;
+ }
+
+ if (atr->adapter[chan_id]) {
+ dev_err(dev, "Adapter %d already present\n", chan_id);
+ return -EEXIST;
+ }
+
+ chan = kzalloc(sizeof(*chan), GFP_KERNEL);
+ if (!chan)
+ return -ENOMEM;
+
+ if (!adapter_parent)
+ adapter_parent = dev;
+
+ chan->atr = atr;
+ chan->chan_id = chan_id;
+ INIT_LIST_HEAD(&chan->alias_list);
+ mutex_init(&chan->orig_addrs_lock);
+
+ snprintf(chan->adap.name, sizeof(chan->adap.name), "i2c-%d-atr-%d",
+ i2c_adapter_id(parent), chan_id);
+ chan->adap.owner = THIS_MODULE;
+ chan->adap.algo = &atr->algo;
+ chan->adap.algo_data = chan;
+ chan->adap.dev.parent = adapter_parent;
+ chan->adap.retries = parent->retries;
+ chan->adap.timeout = parent->timeout;
+ chan->adap.quirks = parent->quirks;
+ chan->adap.lock_ops = &i2c_atr_lock_ops;
+
+ if (bus_handle) {
+ device_set_node(&chan->adap.dev, fwnode_handle_get(bus_handle));
+ } else {
+ struct fwnode_handle *atr_node;
+ struct fwnode_handle *child;
+ u32 reg;
+
+ atr_node = device_get_named_child_node(dev, "i2c-atr");
+
+ fwnode_for_each_child_node(atr_node, child) {
+ ret = fwnode_property_read_u32(child, "reg", ®);
+ if (ret)
+ continue;
+ if (chan_id == reg)
+ break;
+ }
+
+ device_set_node(&chan->adap.dev, child);
+ fwnode_handle_put(atr_node);
+ }
+
+ atr->adapter[chan_id] = &chan->adap;
+
+ ret = i2c_add_adapter(&chan->adap);
+ if (ret) {
+ dev_err(dev, "failed to add atr-adapter %u (error=%d)\n",
+ chan_id, ret);
+ goto err_fwnode_put;
+ }
+
+ snprintf(symlink_name, sizeof(symlink_name), "channel-%u",
+ chan->chan_id);
+
+ ret = sysfs_create_link(&chan->adap.dev.kobj, &dev->kobj, "atr_device");
+ if (ret)
+ dev_warn(dev, "can't create symlink to atr device\n");
+ ret = sysfs_create_link(&dev->kobj, &chan->adap.dev.kobj, symlink_name);
+ if (ret)
+ dev_warn(dev, "can't create symlink for channel %u\n", chan_id);
+
+ dev_dbg(dev, "Added ATR child bus %d\n", i2c_adapter_id(&chan->adap));
+
+ return 0;
+
+err_fwnode_put:
+ fwnode_handle_put(dev_fwnode(&chan->adap.dev));
+ mutex_destroy(&chan->orig_addrs_lock);
+ kfree(chan);
+ return ret;
+}
+EXPORT_SYMBOL_NS_GPL(i2c_atr_add_adapter, I2C_ATR);
+
+void i2c_atr_del_adapter(struct i2c_atr *atr, u32 chan_id)
+{
+ char symlink_name[ATR_MAX_SYMLINK_LEN];
+ struct i2c_adapter *adap;
+ struct i2c_atr_chan *chan;
+ struct fwnode_handle *fwnode;
+ struct device *dev = atr->dev;
+
+ adap = atr->adapter[chan_id];
+ if (!adap)
+ return;
+
+ chan = adap->algo_data;
+ fwnode = dev_fwnode(&adap->dev);
+
+ dev_dbg(dev, "Removing ATR child bus %d\n", i2c_adapter_id(adap));
+
+ snprintf(symlink_name, sizeof(symlink_name), "channel-%u",
+ chan->chan_id);
+ sysfs_remove_link(&dev->kobj, symlink_name);
+ sysfs_remove_link(&chan->adap.dev.kobj, "atr_device");
+
+ i2c_del_adapter(adap);
+
+ atr->adapter[chan_id] = NULL;
+
+ fwnode_handle_put(fwnode);
+ mutex_destroy(&chan->orig_addrs_lock);
+ kfree(chan->orig_addrs);
+ kfree(chan);
+}
+EXPORT_SYMBOL_NS_GPL(i2c_atr_del_adapter, I2C_ATR);
+
+void i2c_atr_set_driver_data(struct i2c_atr *atr, void *data)
+{
+ atr->priv = data;
+}
+EXPORT_SYMBOL_NS_GPL(i2c_atr_set_driver_data, I2C_ATR);
+
+void *i2c_atr_get_driver_data(struct i2c_atr *atr)
+{
+ return atr->priv;
+}
+EXPORT_SYMBOL_NS_GPL(i2c_atr_get_driver_data, I2C_ATR);
+
+MODULE_AUTHOR("Luca Ceresoli <luca.ceresoli@bootlin.com>");
+MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>");
+MODULE_DESCRIPTION("I2C Address Translator");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/i2c-atr.h b/include/linux/i2c-atr.h
new file mode 100644
index 000000000000..7596f70ce1ab
--- /dev/null
+++ b/include/linux/i2c-atr.h
@@ -0,0 +1,116 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * I2C Address Translator
+ *
+ * Copyright (c) 2019,2022 Luca Ceresoli <luca@lucaceresoli.net>
+ * Copyright (c) 2022,2023 Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+ *
+ * Based on i2c-mux.h
+ */
+
+#ifndef _LINUX_I2C_ATR_H
+#define _LINUX_I2C_ATR_H
+
+#include <linux/i2c.h>
+#include <linux/types.h>
+
+struct device;
+struct fwnode_handle;
+struct i2c_atr;
+
+/**
+ * struct i2c_atr_ops - Callbacks from ATR to the device driver.
+ * @attach_client: Notify the driver of a new device connected on a child
+ * bus. The driver must choose an I2C alias, configure the
+ * hardware to use it and return it in `alias_id`.
+ * @detach_client: Notify the driver of a device getting disconnected. The
+ * driver must configure the hardware to stop using the
+ * alias.
+ *
+ * All these functions return 0 on success, a negative error code otherwise.
+ */
+struct i2c_atr_ops {
+ int (*attach_client)(struct i2c_atr *atr, u32 chan_id,
+ const struct i2c_client *client, u16 *alias_id);
+ void (*detach_client)(struct i2c_atr *atr, u32 chan_id,
+ const struct i2c_client *client);
+};
+
+/**
+ * i2c_atr_new() - Allocate and initialize an I2C ATR helper.
+ * @parent: The parent (upstream) adapter
+ * @dev: The device acting as an ATR
+ * @ops: Driver-specific callbacks
+ * @max_adapters: Maximum number of child adapters
+ *
+ * The new ATR helper is connected to the parent adapter but has no child
+ * adapters. Call i2c_atr_add_adapter() to add some.
+ *
+ * Call i2c_atr_delete() to remove.
+ *
+ * Return: pointer to the new ATR helper object, or ERR_PTR
+ */
+struct i2c_atr *i2c_atr_new(struct i2c_adapter *parent, struct device *dev,
+ const struct i2c_atr_ops *ops, int max_adapters);
+
+/**
+ * i2c_atr_delete - Delete an I2C ATR helper.
+ * @atr: I2C ATR helper to be deleted.
+ *
+ * Precondition: all the adapters added with i2c_atr_add_adapter() mumst be
+ * removed by calling i2c_atr_del_adapter().
+ */
+void i2c_atr_delete(struct i2c_atr *atr);
+
+/**
+ * i2c_atr_add_adapter - Create a child ("downstream") I2C bus.
+ * @atr: The I2C ATR
+ * @chan_id: Index of the new adapter (0 .. max_adapters-1). This value is
+ * passed to the callbacks in `struct i2c_atr_ops`.
+ * @adapter_parent: The device used as the parent of the new i2c adapter, or NULL
+ * to use the i2c-atr device as the parent.
+ * @bus_handle: The fwnode handle that points to the adapter's i2c
+ * peripherals, or NULL.
+ *
+ * After calling this function a new i2c bus will appear. Adding and removing
+ * devices on the downstream bus will result in calls to the
+ * &i2c_atr_ops->attach_client and &i2c_atr_ops->detach_client callbacks for the
+ * driver to assign an alias to the device.
+ *
+ * The adapter's fwnode is set to @bus_handle, or if @bus_handle is NULL the
+ * function looks for a child node whose 'reg' property matches the chan_id
+ * under the i2c-atr device's 'i2c-atr' node.
+ *
+ * Call i2c_atr_del_adapter() to remove the adapter.
+ *
+ * Return: 0 on success, a negative error code otherwise.
+ */
+int i2c_atr_add_adapter(struct i2c_atr *atr, u32 chan_id,
+ struct device *adapter_parent,
+ struct fwnode_handle *bus_handle);
+
+/**
+ * i2c_atr_del_adapter - Remove a child ("downstream") I2C bus added by
+ * i2c_atr_add_adapter(). If no I2C bus has been added
+ * this function is a no-op.
+ * @atr: The I2C ATR
+ * @chan_id: Index of the adapter to be removed (0 .. max_adapters-1)
+ */
+void i2c_atr_del_adapter(struct i2c_atr *atr, u32 chan_id);
+
+/**
+ * i2c_atr_set_driver_data - Set private driver data to the i2c-atr instance.
+ * @atr: The I2C ATR
+ * @data: Pointer to the data to store
+ */
+void i2c_atr_set_driver_data(struct i2c_atr *atr, void *data);
+
+/**
+ * i2c_atr_get_driver_data - Get the stored drive data.
+ * @atr: The I2C ATR
+ *
+ * Return: Pointer to the stored data
+ */
+void *i2c_atr_get_driver_data(struct i2c_atr *atr);
+
+#endif /* _LINUX_I2C_ATR_H */
--
2.34.1
^ permalink raw reply related [flat|nested] 16+ messages in thread* [PATCH v9 2/8] media: subdev: Split V4L2_SUBDEV_ROUTING_NO_STREAM_MIX
2023-02-16 14:07 [PATCH v9 0/8] i2c-atr and FPDLink Tomi Valkeinen
2023-02-16 14:07 ` [PATCH v9 1/8] i2c: add I2C Address Translator (ATR) support Tomi Valkeinen
@ 2023-02-16 14:07 ` Tomi Valkeinen
2023-02-16 14:07 ` [PATCH v9 3/8] dt-bindings: media: add TI DS90UB913 FPD-Link III Serializer Tomi Valkeinen
` (6 subsequent siblings)
8 siblings, 0 replies; 16+ messages in thread
From: Tomi Valkeinen @ 2023-02-16 14:07 UTC (permalink / raw)
To: linux-media, devicetree, linux-kernel, linux-i2c, Rob Herring,
Krzysztof Kozlowski, Wolfram Sang, Luca Ceresoli,
Andy Shevchenko, Matti Vaittinen, Laurent Pinchart
Cc: Mauro Carvalho Chehab, Peter Rosin, Liam Girdwood, Mark Brown,
Sakari Ailus, Michael Tretter, Shawn Tu, Hans Verkuil,
Mike Pagano, Krzysztof Hałasa, Marek Vasut,
Satish Nagireddy, Tomi Valkeinen
V4L2_SUBDEV_ROUTING_NO_STREAM_MIX routing validation flag means that all
routes from a sink pad must go to the same source pad and all routes
going to the same source pad must originate from the same sink pad.
This does not cover all use cases. For example, if a device routes
all streams from a single sink pad to any of the source pads, but
streams from multiple sink pads can go to the same source pad, the
current flag is too restrictive.
Split the flag into two parts, V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX
and V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX, which add the restriction
only on one side of the device. Together they mean the same as
V4L2_SUBDEV_ROUTING_NO_STREAM_MIX.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
---
drivers/media/v4l2-core/v4l2-subdev.c | 17 +++++++++++++----
include/media/v4l2-subdev.h | 16 +++++++++++++---
2 files changed, 26 insertions(+), 7 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index dd3c2d86f96e..e513b859a7df 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -1661,10 +1661,11 @@ int v4l2_subdev_routing_validate(struct v4l2_subdev *sd,
}
/*
- * V4L2_SUBDEV_ROUTING_NO_STREAM_MIX: Streams on the same pad
- * may not be routed to streams on different pads.
+ * V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX: Streams on the same
+ * sink pad may not be routed to streams on different source
+ * pads.
*/
- if (disallow & V4L2_SUBDEV_ROUTING_NO_STREAM_MIX) {
+ if (disallow & V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX) {
if (remote_pads[route->sink_pad] != U32_MAX &&
remote_pads[route->sink_pad] != route->source_pad) {
dev_dbg(sd->dev,
@@ -1673,6 +1674,15 @@ int v4l2_subdev_routing_validate(struct v4l2_subdev *sd,
goto out;
}
+ remote_pads[route->sink_pad] = route->source_pad;
+ }
+
+ /*
+ * V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX: Streams on the same
+ * source pad may not be routed to streams on different sink
+ * pads.
+ */
+ if (disallow & V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX) {
if (remote_pads[route->source_pad] != U32_MAX &&
remote_pads[route->source_pad] != route->sink_pad) {
dev_dbg(sd->dev,
@@ -1681,7 +1691,6 @@ int v4l2_subdev_routing_validate(struct v4l2_subdev *sd,
goto out;
}
- remote_pads[route->sink_pad] = route->source_pad;
remote_pads[route->source_pad] = route->sink_pad;
}
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index 6a77aa9bb1da..f11103122e53 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -1638,19 +1638,29 @@ u64 v4l2_subdev_state_xlate_streams(const struct v4l2_subdev_state *state,
* @V4L2_SUBDEV_ROUTING_NO_N_TO_1:
* multiple input streams may not be routed to the same output stream
* (stream merging)
- * @V4L2_SUBDEV_ROUTING_NO_STREAM_MIX:
- * streams on the same pad may not be routed to streams on different pads
+ * @V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX:
+ * streams on the same sink pad may not be routed to streams on different
+ * source pads
+ * @V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX:
+ * streams on the same source pad may not be routed to streams on different
+ * sink pads
* @V4L2_SUBDEV_ROUTING_ONLY_1_TO_1:
* only non-overlapping 1-to-1 stream routing is allowed (a combination of
* @V4L2_SUBDEV_ROUTING_NO_1_TO_N and @V4L2_SUBDEV_ROUTING_NO_N_TO_1)
+ * @V4L2_SUBDEV_ROUTING_NO_STREAM_MIX:
+ * streams on the same pad may not be routed to streams on different pads
*/
enum v4l2_subdev_routing_restriction {
V4L2_SUBDEV_ROUTING_NO_1_TO_N = BIT(0),
V4L2_SUBDEV_ROUTING_NO_N_TO_1 = BIT(1),
- V4L2_SUBDEV_ROUTING_NO_STREAM_MIX = BIT(2),
+ V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX = BIT(2),
+ V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX = BIT(3),
V4L2_SUBDEV_ROUTING_ONLY_1_TO_1 =
V4L2_SUBDEV_ROUTING_NO_1_TO_N |
V4L2_SUBDEV_ROUTING_NO_N_TO_1,
+ V4L2_SUBDEV_ROUTING_NO_STREAM_MIX =
+ V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX |
+ V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX,
};
/**
--
2.34.1
^ permalink raw reply related [flat|nested] 16+ messages in thread* [PATCH v9 3/8] dt-bindings: media: add TI DS90UB913 FPD-Link III Serializer
2023-02-16 14:07 [PATCH v9 0/8] i2c-atr and FPDLink Tomi Valkeinen
2023-02-16 14:07 ` [PATCH v9 1/8] i2c: add I2C Address Translator (ATR) support Tomi Valkeinen
2023-02-16 14:07 ` [PATCH v9 2/8] media: subdev: Split V4L2_SUBDEV_ROUTING_NO_STREAM_MIX Tomi Valkeinen
@ 2023-02-16 14:07 ` Tomi Valkeinen
2023-02-16 14:07 ` [PATCH v9 4/8] dt-bindings: media: add TI DS90UB953 " Tomi Valkeinen
` (5 subsequent siblings)
8 siblings, 0 replies; 16+ messages in thread
From: Tomi Valkeinen @ 2023-02-16 14:07 UTC (permalink / raw)
To: linux-media, devicetree, linux-kernel, linux-i2c, Rob Herring,
Krzysztof Kozlowski, Wolfram Sang, Luca Ceresoli,
Andy Shevchenko, Matti Vaittinen, Laurent Pinchart
Cc: Mauro Carvalho Chehab, Peter Rosin, Liam Girdwood, Mark Brown,
Sakari Ailus, Michael Tretter, Shawn Tu, Hans Verkuil,
Mike Pagano, Krzysztof Hałasa, Marek Vasut,
Satish Nagireddy, Tomi Valkeinen, Laurent Pinchart, Rob Herring
Add DT bindings for TI DS90UB913 FPD-Link III Serializer.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
.../bindings/media/i2c/ti,ds90ub913.yaml | 133 ++++++++++++++++++
1 file changed, 133 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/i2c/ti,ds90ub913.yaml
diff --git a/Documentation/devicetree/bindings/media/i2c/ti,ds90ub913.yaml b/Documentation/devicetree/bindings/media/i2c/ti,ds90ub913.yaml
new file mode 100644
index 000000000000..f6612bb0f667
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/ti,ds90ub913.yaml
@@ -0,0 +1,133 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/ti,ds90ub913.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments DS90UB913 FPD-Link III Serializer
+
+maintainers:
+ - Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+
+description:
+ The TI DS90UB913 is an FPD-Link III video serializer for parallel video.
+
+properties:
+ compatible:
+ enum:
+ - ti,ds90ub913a-q1
+
+ '#gpio-cells':
+ const: 2
+ description:
+ First cell is the GPO pin number, second cell is the flags. The GPO pin
+ number must be in range of [0, 3]. Note that GPOs 2 and 3 are not
+ available in external oscillator mode.
+
+ gpio-controller: true
+
+ clocks:
+ maxItems: 1
+ description:
+ Reference clock connected to the CLKIN pin.
+
+ clock-names:
+ items:
+ - const: clkin
+
+ '#clock-cells':
+ const: 0
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+
+ properties:
+ port@0:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ unevaluatedProperties: false
+ description: Parallel input port
+
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+
+ required:
+ - pclk-sample
+
+ port@1:
+ $ref: /schemas/graph.yaml#/properties/port
+ unevaluatedProperties: false
+ description: FPD-Link III output port
+
+ required:
+ - port@0
+ - port@1
+
+ i2c:
+ $ref: /schemas/i2c/i2c-controller.yaml#
+ unevaluatedProperties: false
+
+required:
+ - compatible
+ - '#gpio-cells'
+ - gpio-controller
+ - '#clock-cells'
+ - ports
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ serializer {
+ compatible = "ti,ds90ub913a-q1";
+
+ gpio-controller;
+ #gpio-cells = <2>;
+
+ clocks = <&clk_cam_48M>;
+ clock-names = "clkin";
+
+ #clock-cells = <0>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ ub913_in: endpoint {
+ remote-endpoint = <&sensor_out>;
+ pclk-sample = <1>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ endpoint {
+ remote-endpoint = <&deser_fpd_in>;
+ };
+ };
+ };
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ sensor@48 {
+ compatible = "aptina,mt9v111";
+ reg = <0x48>;
+
+ clocks = <&fixed_clock>;
+
+ port {
+ sensor_out: endpoint {
+ remote-endpoint = <&ub913_in>;
+ };
+ };
+ };
+ };
+ };
+...
--
2.34.1
^ permalink raw reply related [flat|nested] 16+ messages in thread* [PATCH v9 4/8] dt-bindings: media: add TI DS90UB953 FPD-Link III Serializer
2023-02-16 14:07 [PATCH v9 0/8] i2c-atr and FPDLink Tomi Valkeinen
` (2 preceding siblings ...)
2023-02-16 14:07 ` [PATCH v9 3/8] dt-bindings: media: add TI DS90UB913 FPD-Link III Serializer Tomi Valkeinen
@ 2023-02-16 14:07 ` Tomi Valkeinen
2023-02-16 14:07 ` [PATCH v9 5/8] dt-bindings: media: add TI DS90UB960 FPD-Link III Deserializer Tomi Valkeinen
` (4 subsequent siblings)
8 siblings, 0 replies; 16+ messages in thread
From: Tomi Valkeinen @ 2023-02-16 14:07 UTC (permalink / raw)
To: linux-media, devicetree, linux-kernel, linux-i2c, Rob Herring,
Krzysztof Kozlowski, Wolfram Sang, Luca Ceresoli,
Andy Shevchenko, Matti Vaittinen, Laurent Pinchart
Cc: Mauro Carvalho Chehab, Peter Rosin, Liam Girdwood, Mark Brown,
Sakari Ailus, Michael Tretter, Shawn Tu, Hans Verkuil,
Mike Pagano, Krzysztof Hałasa, Marek Vasut,
Satish Nagireddy, Tomi Valkeinen, Laurent Pinchart, Rob Herring
Add DT bindings for TI DS90UB953 FPD-Link III Serializer.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
.../bindings/media/i2c/ti,ds90ub953.yaml | 134 ++++++++++++++++++
1 file changed, 134 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/i2c/ti,ds90ub953.yaml
diff --git a/Documentation/devicetree/bindings/media/i2c/ti,ds90ub953.yaml b/Documentation/devicetree/bindings/media/i2c/ti,ds90ub953.yaml
new file mode 100644
index 000000000000..2030366994d1
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/ti,ds90ub953.yaml
@@ -0,0 +1,134 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/ti,ds90ub953.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments DS90UB953 FPD-Link III Serializer
+
+maintainers:
+ - Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+
+description:
+ The TI DS90UB953 is an FPD-Link III video serializer for MIPI CSI-2.
+
+properties:
+ compatible:
+ enum:
+ - ti,ds90ub953-q1
+ - ti,ds90ub971-q1
+
+ '#gpio-cells':
+ const: 2
+ description:
+ First cell is the GPIO pin number, second cell is the flags. The GPIO pin
+ number must be in range of [0, 3].
+
+ gpio-controller: true
+
+ clocks:
+ maxItems: 1
+ description:
+ Reference clock connected to the CLKIN pin.
+
+ clock-names:
+ items:
+ - const: clkin
+
+ '#clock-cells':
+ const: 0
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+
+ properties:
+ port@0:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ unevaluatedProperties: false
+ description: CSI-2 input port
+
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+
+ required:
+ - data-lanes
+
+ port@1:
+ $ref: /schemas/graph.yaml#/properties/port
+ unevaluatedProperties: false
+ description: FPD-Link III output port
+
+ required:
+ - port@0
+ - port@1
+
+ i2c:
+ $ref: /schemas/i2c/i2c-controller.yaml#
+ unevaluatedProperties: false
+
+required:
+ - compatible
+ - '#gpio-cells'
+ - gpio-controller
+ - '#clock-cells'
+ - ports
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ serializer {
+ compatible = "ti,ds90ub953-q1";
+
+ gpio-controller;
+ #gpio-cells = <2>;
+
+ #clock-cells = <0>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ ub953_in: endpoint {
+ clock-lanes = <0>;
+ data-lanes = <1 2 3 4>;
+ remote-endpoint = <&sensor_out>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ endpoint {
+ remote-endpoint = <&deser_fpd_in>;
+ };
+ };
+ };
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ sensor@1a {
+ compatible = "sony,imx274";
+ reg = <0x1a>;
+
+ reset-gpios = <&serializer 0 GPIO_ACTIVE_LOW>;
+
+ clocks = <&serializer>;
+ clock-names = "inck";
+
+ port {
+ sensor_out: endpoint {
+ remote-endpoint = <&ub953_in>;
+ };
+ };
+ };
+ };
+ };
+...
--
2.34.1
^ permalink raw reply related [flat|nested] 16+ messages in thread* [PATCH v9 5/8] dt-bindings: media: add TI DS90UB960 FPD-Link III Deserializer
2023-02-16 14:07 [PATCH v9 0/8] i2c-atr and FPDLink Tomi Valkeinen
` (3 preceding siblings ...)
2023-02-16 14:07 ` [PATCH v9 4/8] dt-bindings: media: add TI DS90UB953 " Tomi Valkeinen
@ 2023-02-16 14:07 ` Tomi Valkeinen
2023-02-16 14:07 ` [PATCH v9 6/8] media: i2c: add DS90UB960 driver Tomi Valkeinen
` (3 subsequent siblings)
8 siblings, 0 replies; 16+ messages in thread
From: Tomi Valkeinen @ 2023-02-16 14:07 UTC (permalink / raw)
To: linux-media, devicetree, linux-kernel, linux-i2c, Rob Herring,
Krzysztof Kozlowski, Wolfram Sang, Luca Ceresoli,
Andy Shevchenko, Matti Vaittinen, Laurent Pinchart
Cc: Mauro Carvalho Chehab, Peter Rosin, Liam Girdwood, Mark Brown,
Sakari Ailus, Michael Tretter, Shawn Tu, Hans Verkuil,
Mike Pagano, Krzysztof Hałasa, Marek Vasut,
Satish Nagireddy, Tomi Valkeinen, Rob Herring, Laurent Pinchart
Add DT bindings for TI DS90UB960 FPD-Link III Deserializer.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
.../bindings/media/i2c/ti,ds90ub960.yaml | 431 ++++++++++++++++++
1 file changed, 431 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml
diff --git a/Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml b/Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml
new file mode 100644
index 000000000000..bb921caa85a7
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml
@@ -0,0 +1,431 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/ti,ds90ub960.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments DS90UB9XX Family FPD-Link Deserializer Hubs
+
+maintainers:
+ - Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+
+description:
+ The TI DS90UB9XX devices are FPD-Link video deserializers with I2C and GPIO
+ forwarding.
+
+properties:
+ compatible:
+ enum:
+ - ti,ds90ub960-q1
+ - ti,ds90ub9702-q1
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+ description:
+ Reference clock connected to the REFCLK pin.
+
+ clock-names:
+ items:
+ - const: refclk
+
+ powerdown-gpios:
+ maxItems: 1
+ description:
+ Specifier for the GPIO connected to the PDB pin.
+
+ i2c-alias-pool:
+ $ref: /schemas/types.yaml#/definitions/uint16-array
+ description:
+ I2C alias pool is a pool of I2C addresses on the main I2C bus that can be
+ used to access the remote peripherals on the serializer's I2C bus. The
+ addresses must be available, not used by any other peripheral. Each
+ remote peripheral is assigned an alias from the pool, and transactions to
+ that address will be forwarded to the remote peripheral, with the address
+ translated to the remote peripheral's real address. This property is not
+ needed if there are no I2C addressable remote peripherals.
+
+ links:
+ type: object
+ additionalProperties: false
+
+ properties:
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ ti,manual-strobe:
+ type: boolean
+ description:
+ Enable manual strobe position and EQ level
+
+ patternProperties:
+ '^link@[0-3]$':
+ type: object
+ additionalProperties: false
+ properties:
+ reg:
+ description: The link number
+ maxItems: 1
+
+ i2c-alias:
+ description:
+ The I2C address used for the serializer. Transactions to this
+ address on the I2C bus where the deserializer resides are
+ forwarded to the serializer.
+
+ ti,rx-mode:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum:
+ - 0 # RAW10
+ - 1 # RAW12 HF
+ - 2 # RAW12 LF
+ - 3 # CSI2 SYNC
+ - 4 # CSI2 NON-SYNC
+ description:
+ FPD-Link Input Mode. This should reflect the hardware and the
+ default mode of the connected device.
+
+ ti,cdr-mode:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum:
+ - 0 # FPD-Link III
+ - 1 # FPD-Link IV
+ description:
+ FPD-Link CDR Mode. This should reflect the hardware and the
+ default mode of the connected device.
+
+ ti,strobe-pos:
+ $ref: /schemas/types.yaml#/definitions/int32
+ minimum: -13
+ maximum: 13
+ description: Manual strobe position
+
+ ti,eq-level:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ maximum: 14
+ description: Manual EQ level
+
+ serializer:
+ type: object
+ description: FPD-Link Serializer node
+
+ required:
+ - reg
+ - i2c-alias
+ - ti,rx-mode
+ - serializer
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+
+ properties:
+ port@0:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ unevaluatedProperties: false
+ description: FPD-Link input 0
+
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+ description:
+ Endpoint for FPD-Link port. If the RX mode for this port is RAW,
+ hsync-active and vsync-active must be defined.
+
+ port@1:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ unevaluatedProperties: false
+ description: FPD-Link input 1
+
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+ description:
+ Endpoint for FPD-Link port. If the RX mode for this port is RAW,
+ hsync-active and vsync-active must be defined.
+
+ port@2:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ unevaluatedProperties: false
+ description: FPD-Link input 2
+
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+ description:
+ Endpoint for FPD-Link port. If the RX mode for this port is RAW,
+ hsync-active and vsync-active must be defined.
+
+ port@3:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ unevaluatedProperties: false
+ description: FPD-Link input 3
+
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+ description:
+ Endpoint for FPD-Link port. If the RX mode for this port is RAW,
+ hsync-active and vsync-active must be defined.
+
+ port@4:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ unevaluatedProperties: false
+ description: CSI-2 Output 0
+
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+
+ properties:
+ data-lanes:
+ minItems: 1
+ maxItems: 4
+ link-frequencies:
+ maxItems: 1
+
+ required:
+ - data-lanes
+ - link-frequencies
+
+ port@5:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ unevaluatedProperties: false
+ description: CSI-2 Output 1
+
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+
+ properties:
+ data-lanes:
+ minItems: 1
+ maxItems: 4
+ link-frequencies:
+ maxItems: 1
+
+ required:
+ - data-lanes
+ - link-frequencies
+
+ required:
+ - port@0
+ - port@1
+ - port@2
+ - port@3
+ - port@4
+ - port@5
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - ports
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ i2c {
+ clock-frequency = <400000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ deser@3d {
+ compatible = "ti,ds90ub960-q1";
+ reg = <0x3d>;
+
+ clock-names = "refclk";
+ clocks = <&fixed_clock>;
+
+ powerdown-gpios = <&pca9555 7 GPIO_ACTIVE_LOW>;
+
+ i2c-alias-pool = /bits/ 16 <0x4a 0x4b 0x4c 0x4d 0x4e 0x4f>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ /* Port 0, Camera 0 */
+ port@0 {
+ reg = <0>;
+
+ ub960_fpd3_1_in: endpoint {
+ remote-endpoint = <&ub953_1_out>;
+ };
+ };
+
+ /* Port 1, Camera 1 */
+ port@1 {
+ reg = <1>;
+
+ ub960_fpd3_2_in: endpoint {
+ remote-endpoint = <&ub913_2_out>;
+ hsync-active = <0>;
+ vsync-active = <1>;
+ };
+ };
+
+ /* Port 2, unconnected */
+ port@2 {
+ reg = <2>;
+ };
+
+ /* Port 3, unconnected */
+ port@3 {
+ reg = <3>;
+ };
+
+ /* Port 4, CSI-2 TX */
+ port@4 {
+ reg = <4>;
+ ds90ub960_0_csi_out: endpoint {
+ data-lanes = <1 2 3 4>;
+ link-frequencies = /bits/ 64 <800000000>;
+ remote-endpoint = <&csi2_phy0>;
+ };
+ };
+
+ /* Port 5, unconnected */
+ port@5 {
+ reg = <5>;
+ };
+ };
+
+ links {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ /* Link 0 has DS90UB953 serializer and IMX274 sensor */
+
+ link@0 {
+ reg = <0>;
+ i2c-alias = <0x44>;
+
+ ti,rx-mode = <3>;
+
+ serializer1: serializer {
+ compatible = "ti,ds90ub953-q1";
+
+ gpio-controller;
+ #gpio-cells = <2>;
+
+ #clock-cells = <0>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ ub953_1_in: endpoint {
+ data-lanes = <1 2 3 4>;
+ remote-endpoint = <&sensor_1_out>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+
+ ub953_1_out: endpoint {
+ remote-endpoint = <&ub960_fpd3_1_in>;
+ };
+ };
+ };
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ sensor@1a {
+ compatible = "sony,imx274";
+ reg = <0x1a>;
+
+ reset-gpios = <&serializer1 0 GPIO_ACTIVE_LOW>;
+
+ port {
+ sensor_1_out: endpoint {
+ remote-endpoint = <&ub953_1_in>;
+ };
+ };
+ };
+ };
+ };
+ }; /* End of link@0 */
+
+ /* Link 1 has DS90UB913 serializer and MT9V111 sensor */
+
+ link@1 {
+ reg = <1>;
+ i2c-alias = <0x45>;
+
+ ti,rx-mode = <0>;
+
+ serializer2: serializer {
+ compatible = "ti,ds90ub913a-q1";
+
+ gpio-controller;
+ #gpio-cells = <2>;
+
+ clocks = <&clk_cam_48M>;
+ clock-names = "clkin";
+
+ #clock-cells = <0>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ ub913_2_in: endpoint {
+ remote-endpoint = <&sensor_2_out>;
+ pclk-sample = <1>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+
+ ub913_2_out: endpoint {
+ remote-endpoint = <&ub960_fpd3_2_in>;
+ };
+ };
+ };
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ sensor@48 {
+ compatible = "aptina,mt9v111";
+ reg = <0x48>;
+
+ clocks = <&serializer2>;
+
+ port {
+ sensor_2_out: endpoint {
+ remote-endpoint = <&ub913_2_in>;
+ };
+ };
+ };
+ };
+ };
+ }; /* End of link@1 */
+ };
+ };
+ };
+...
--
2.34.1
^ permalink raw reply related [flat|nested] 16+ messages in thread* [PATCH v9 6/8] media: i2c: add DS90UB960 driver
2023-02-16 14:07 [PATCH v9 0/8] i2c-atr and FPDLink Tomi Valkeinen
` (4 preceding siblings ...)
2023-02-16 14:07 ` [PATCH v9 5/8] dt-bindings: media: add TI DS90UB960 FPD-Link III Deserializer Tomi Valkeinen
@ 2023-02-16 14:07 ` Tomi Valkeinen
2023-02-16 14:07 ` [PATCH v9 7/8] media: i2c: add DS90UB913 driver Tomi Valkeinen
` (2 subsequent siblings)
8 siblings, 0 replies; 16+ messages in thread
From: Tomi Valkeinen @ 2023-02-16 14:07 UTC (permalink / raw)
To: linux-media, devicetree, linux-kernel, linux-i2c, Rob Herring,
Krzysztof Kozlowski, Wolfram Sang, Luca Ceresoli,
Andy Shevchenko, Matti Vaittinen, Laurent Pinchart
Cc: Mauro Carvalho Chehab, Peter Rosin, Liam Girdwood, Mark Brown,
Sakari Ailus, Michael Tretter, Shawn Tu, Hans Verkuil,
Mike Pagano, Krzysztof Hałasa, Marek Vasut,
Satish Nagireddy, Tomi Valkeinen
Add driver for TI DS90UB960 FPD-Link III Deserializer.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
---
MAINTAINERS | 8 +
drivers/media/i2c/Kconfig | 21 +
drivers/media/i2c/Makefile | 1 +
drivers/media/i2c/ds90ub960.c | 4181 +++++++++++++++++++++++++++++++++
include/media/i2c/ds90ub9xx.h | 22 +
5 files changed, 4233 insertions(+)
create mode 100644 drivers/media/i2c/ds90ub960.c
create mode 100644 include/media/i2c/ds90ub9xx.h
diff --git a/MAINTAINERS b/MAINTAINERS
index ba716f2861cf..d0dc8572191d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -20626,6 +20626,14 @@ F: drivers/misc/tifm*
F: drivers/mmc/host/tifm_sd.c
F: include/linux/tifm.h
+TI FPD-LINK DRIVERS
+M: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+L: linux-media@vger.kernel.org
+S: Maintained
+F: Documentation/devicetree/bindings/media/i2c/ti,ds90*
+F: drivers/media/i2c/ds90*
+F: include/media/i2c/ds90*
+
TI KEYSTONE MULTICORE NAVIGATOR DRIVERS
M: Nishanth Menon <nm@ti.com>
M: Santosh Shilimkar <ssantosh@kernel.org>
diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index 7806d4b81716..dc1c7c80dc1c 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -1595,4 +1595,25 @@ config VIDEO_THS7303
endmenu
+#
+# Video serializers and deserializers (e.g. FPD-Link)
+#
+
+menu "Video serializers and deserializers"
+
+config VIDEO_DS90UB960
+ tristate "TI FPD-Link III/IV Deserializers"
+ depends on OF && I2C && VIDEO_DEV
+ select I2C_ATR
+ select MEDIA_CONTROLLER
+ select OF_GPIO
+ select REGMAP_I2C
+ select V4L2_FWNODE
+ select VIDEO_V4L2_SUBDEV_API
+ help
+ Device driver for the Texas Instruments DS90UB960
+ FPD-Link III Deserializer and DS90UB9702 FPD-Link IV Deserializer.
+
+endmenu
+
endif # VIDEO_DEV
diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
index 0a2933103dd9..7701c58b4c03 100644
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -29,6 +29,7 @@ obj-$(CONFIG_VIDEO_CS3308) += cs3308.o
obj-$(CONFIG_VIDEO_CS5345) += cs5345.o
obj-$(CONFIG_VIDEO_CS53L32A) += cs53l32a.o
obj-$(CONFIG_VIDEO_CX25840) += cx25840/
+obj-$(CONFIG_VIDEO_DS90UB960) += ds90ub960.o
obj-$(CONFIG_VIDEO_DW9714) += dw9714.o
obj-$(CONFIG_VIDEO_DW9768) += dw9768.o
obj-$(CONFIG_VIDEO_DW9807_VCM) += dw9807-vcm.o
diff --git a/drivers/media/i2c/ds90ub960.c b/drivers/media/i2c/ds90ub960.c
new file mode 100644
index 000000000000..1ae0c7cda7c7
--- /dev/null
+++ b/drivers/media/i2c/ds90ub960.c
@@ -0,0 +1,4181 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Driver for the Texas Instruments DS90UB960-Q1 video deserializer
+ *
+ * Copyright (c) 2019 Luca Ceresoli <luca@lucaceresoli.net>
+ * Copyright (c) 2023 Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+ */
+
+/*
+ * (Possible) TODOs
+ *
+ * - PM for serializer and remote peripherals. We need to manage:
+ * - VPOC
+ * - Power domain? Regulator? Somehow any remote device should be able to
+ * cause the VPOC to be turned on.
+ * - Link between the deserializer and the serializer
+ * - Related to VPOC management. We probably always want to turn on the VPOC
+ * and then enable the link.
+ * - Serializer's services: i2c, gpios, power
+ * - The serializer needs to resume before the remote peripherals can
+ * e.g. use the i2c.
+ * - How to handle gpios? Reserving a gpio essentially keeps the provider
+ * (serializer) always powered on.
+ * - Do we need a new bus for the FPD-Link? At the moment the serializers
+ * are children of the same i2c-adapter where the deserializer resides.
+ * - i2c-atr could be made embeddable instead of allocatable.
+ */
+
+#include <linux/bitops.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/fwnode.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c-atr.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/kthread.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+
+#include <media/i2c/ds90ub9xx.h>
+#include <media/mipi-csi2.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-fwnode.h>
+#include <media/v4l2-subdev.h>
+
+#define MHZ(v) ((u32)((v) * 1000000U))
+
+#define UB960_POLL_TIME_MS 500
+
+#define UB960_MAX_RX_NPORTS 4
+#define UB960_MAX_TX_NPORTS 2
+#define UB960_MAX_NPORTS (UB960_MAX_RX_NPORTS + UB960_MAX_TX_NPORTS)
+
+#define UB960_MAX_PORT_ALIASES 8
+
+#define UB960_NUM_BC_GPIOS 4
+
+/*
+ * Register map
+ *
+ * 0x00-0x32 Shared (UB960_SR)
+ * 0x33-0x3a CSI-2 TX (per-port paged on DS90UB960, shared on 954) (UB960_TR)
+ * 0x4c Shared (UB960_SR)
+ * 0x4d-0x7f FPD-Link RX, per-port paged (UB960_RR)
+ * 0xb0-0xbf Shared (UB960_SR)
+ * 0xd0-0xdf FPD-Link RX, per-port paged (UB960_RR)
+ * 0xf0-0xf5 Shared (UB960_SR)
+ * 0xf8-0xfb Shared (UB960_SR)
+ * All others Reserved
+ *
+ * Register prefixes:
+ * UB960_SR_* = Shared register
+ * UB960_RR_* = FPD-Link RX, per-port paged register
+ * UB960_TR_* = CSI-2 TX, per-port paged register
+ * UB960_XR_* = Reserved register
+ * UB960_IR_* = Indirect register
+ */
+
+#define UB960_SR_I2C_DEV_ID 0x00
+#define UB960_SR_RESET 0x01
+#define UB960_SR_RESET_DIGITAL_RESET1 BIT(1)
+#define UB960_SR_RESET_DIGITAL_RESET0 BIT(0)
+#define UB960_SR_RESET_GPIO_LOCK_RELEASE BIT(5)
+
+#define UB960_SR_GEN_CONFIG 0x02
+#define UB960_SR_REV_MASK 0x03
+#define UB960_SR_DEVICE_STS 0x04
+#define UB960_SR_PAR_ERR_THOLD_HI 0x05
+#define UB960_SR_PAR_ERR_THOLD_LO 0x06
+#define UB960_SR_BCC_WDOG_CTL 0x07
+#define UB960_SR_I2C_CTL1 0x08
+#define UB960_SR_I2C_CTL2 0x09
+#define UB960_SR_SCL_HIGH_TIME 0x0a
+#define UB960_SR_SCL_LOW_TIME 0x0b
+#define UB960_SR_RX_PORT_CTL 0x0c
+#define UB960_SR_IO_CTL 0x0d
+#define UB960_SR_GPIO_PIN_STS 0x0e
+#define UB960_SR_GPIO_INPUT_CTL 0x0f
+#define UB960_SR_GPIO_PIN_CTL(n) (0x10 + (n)) /* n < UB960_NUM_GPIOS */
+#define UB960_SR_GPIO_PIN_CTL_GPIO_OUT_SEL 5
+#define UB960_SR_GPIO_PIN_CTL_GPIO_OUT_SRC_SHIFT 2
+#define UB960_SR_GPIO_PIN_CTL_GPIO_OUT_EN BIT(0)
+
+#define UB960_SR_FS_CTL 0x18
+#define UB960_SR_FS_HIGH_TIME_1 0x19
+#define UB960_SR_FS_HIGH_TIME_0 0x1a
+#define UB960_SR_FS_LOW_TIME_1 0x1b
+#define UB960_SR_FS_LOW_TIME_0 0x1c
+#define UB960_SR_MAX_FRM_HI 0x1d
+#define UB960_SR_MAX_FRM_LO 0x1e
+#define UB960_SR_CSI_PLL_CTL 0x1f
+
+#define UB960_SR_FWD_CTL1 0x20
+#define UB960_SR_FWD_CTL1_PORT_DIS(n) BIT((n) + 4)
+
+#define UB960_SR_FWD_CTL2 0x21
+#define UB960_SR_FWD_STS 0x22
+
+#define UB960_SR_INTERRUPT_CTL 0x23
+#define UB960_SR_INTERRUPT_CTL_INT_EN BIT(7)
+#define UB960_SR_INTERRUPT_CTL_IE_CSI_TX0 BIT(4)
+#define UB960_SR_INTERRUPT_CTL_IE_RX(n) BIT((n)) /* rxport[n] IRQ */
+
+#define UB960_SR_INTERRUPT_STS 0x24
+#define UB960_SR_INTERRUPT_STS_INT BIT(7)
+#define UB960_SR_INTERRUPT_STS_IS_CSI_TX(n) BIT(4 + (n)) /* txport[n] IRQ */
+#define UB960_SR_INTERRUPT_STS_IS_RX(n) BIT((n)) /* rxport[n] IRQ */
+
+#define UB960_SR_TS_CONFIG 0x25
+#define UB960_SR_TS_CONTROL 0x26
+#define UB960_SR_TS_LINE_HI 0x27
+#define UB960_SR_TS_LINE_LO 0x28
+#define UB960_SR_TS_STATUS 0x29
+#define UB960_SR_TIMESTAMP_P0_HI 0x2a
+#define UB960_SR_TIMESTAMP_P0_LO 0x2b
+#define UB960_SR_TIMESTAMP_P1_HI 0x2c
+#define UB960_SR_TIMESTAMP_P1_LO 0x2d
+
+#define UB960_SR_CSI_PORT_SEL 0x32
+
+#define UB960_TR_CSI_CTL 0x33
+#define UB960_TR_CSI_CTL_CSI_CAL_EN BIT(6)
+#define UB960_TR_CSI_CTL_CSI_ENABLE BIT(0)
+
+#define UB960_TR_CSI_CTL2 0x34
+#define UB960_TR_CSI_STS 0x35
+#define UB960_TR_CSI_TX_ICR 0x36
+
+#define UB960_TR_CSI_TX_ISR 0x37
+#define UB960_TR_CSI_TX_ISR_IS_CSI_SYNC_ERROR BIT(3)
+#define UB960_TR_CSI_TX_ISR_IS_CSI_PASS_ERROR BIT(1)
+
+#define UB960_TR_CSI_TEST_CTL 0x38
+#define UB960_TR_CSI_TEST_PATT_HI 0x39
+#define UB960_TR_CSI_TEST_PATT_LO 0x3a
+
+#define UB960_XR_SFILTER_CFG 0x41
+#define UB960_XR_SFILTER_CFG_SFILTER_MAX_SHIFT 4
+#define UB960_XR_SFILTER_CFG_SFILTER_MIN_SHIFT 0
+
+#define UB960_XR_AEQ_CTL1 0x42
+#define UB960_XR_AEQ_CTL1_AEQ_ERR_CTL_FPD_CLK BIT(6)
+#define UB960_XR_AEQ_CTL1_AEQ_ERR_CTL_ENCODING BIT(5)
+#define UB960_XR_AEQ_CTL1_AEQ_ERR_CTL_PARITY BIT(4)
+#define UB960_XR_AEQ_CTL1_AEQ_ERR_CTL_MASK \
+ (UB960_XR_AEQ_CTL1_AEQ_ERR_CTL_FPD_CLK | \
+ UB960_XR_AEQ_CTL1_AEQ_ERR_CTL_ENCODING | \
+ UB960_XR_AEQ_CTL1_AEQ_ERR_CTL_PARITY)
+#define UB960_XR_AEQ_CTL1_AEQ_SFILTER_EN BIT(0)
+
+#define UB960_XR_AEQ_ERR_THOLD 0x43
+
+#define UB960_RR_BCC_ERR_CTL 0x46
+#define UB960_RR_BCC_STATUS 0x47
+#define UB960_RR_BCC_STATUS_SEQ_ERROR BIT(5)
+#define UB960_RR_BCC_STATUS_MASTER_ERR BIT(4)
+#define UB960_RR_BCC_STATUS_MASTER_TO BIT(3)
+#define UB960_RR_BCC_STATUS_SLAVE_ERR BIT(2)
+#define UB960_RR_BCC_STATUS_SLAVE_TO BIT(1)
+#define UB960_RR_BCC_STATUS_RESP_ERR BIT(0)
+#define UB960_RR_BCC_STATUS_ERROR_MASK \
+ (UB960_RR_BCC_STATUS_SEQ_ERROR | UB960_RR_BCC_STATUS_MASTER_ERR | \
+ UB960_RR_BCC_STATUS_MASTER_TO | UB960_RR_BCC_STATUS_SLAVE_ERR | \
+ UB960_RR_BCC_STATUS_SLAVE_TO | UB960_RR_BCC_STATUS_RESP_ERR)
+
+#define UB960_RR_FPD3_CAP 0x4a
+#define UB960_RR_RAW_EMBED_DTYPE 0x4b
+#define UB960_RR_RAW_EMBED_DTYPE_LINES_SHIFT 6
+
+#define UB960_SR_FPD3_PORT_SEL 0x4c
+
+#define UB960_RR_RX_PORT_STS1 0x4d
+#define UB960_RR_RX_PORT_STS1_BCC_CRC_ERROR BIT(5)
+#define UB960_RR_RX_PORT_STS1_LOCK_STS_CHG BIT(4)
+#define UB960_RR_RX_PORT_STS1_BCC_SEQ_ERROR BIT(3)
+#define UB960_RR_RX_PORT_STS1_PARITY_ERROR BIT(2)
+#define UB960_RR_RX_PORT_STS1_PORT_PASS BIT(1)
+#define UB960_RR_RX_PORT_STS1_LOCK_STS BIT(0)
+#define UB960_RR_RX_PORT_STS1_ERROR_MASK \
+ (UB960_RR_RX_PORT_STS1_BCC_CRC_ERROR | \
+ UB960_RR_RX_PORT_STS1_BCC_SEQ_ERROR | \
+ UB960_RR_RX_PORT_STS1_PARITY_ERROR)
+
+#define UB960_RR_RX_PORT_STS2 0x4e
+#define UB960_RR_RX_PORT_STS2_LINE_LEN_UNSTABLE BIT(7)
+#define UB960_RR_RX_PORT_STS2_LINE_LEN_CHG BIT(6)
+#define UB960_RR_RX_PORT_STS2_FPD3_ENCODE_ERROR BIT(5)
+#define UB960_RR_RX_PORT_STS2_BUFFER_ERROR BIT(4)
+#define UB960_RR_RX_PORT_STS2_CSI_ERROR BIT(3)
+#define UB960_RR_RX_PORT_STS2_FREQ_STABLE BIT(2)
+#define UB960_RR_RX_PORT_STS2_CABLE_FAULT BIT(1)
+#define UB960_RR_RX_PORT_STS2_LINE_CNT_CHG BIT(0)
+#define UB960_RR_RX_PORT_STS2_ERROR_MASK \
+ UB960_RR_RX_PORT_STS2_BUFFER_ERROR
+
+#define UB960_RR_RX_FREQ_HIGH 0x4f
+#define UB960_RR_RX_FREQ_LOW 0x50
+#define UB960_RR_SENSOR_STS_0 0x51
+#define UB960_RR_SENSOR_STS_1 0x52
+#define UB960_RR_SENSOR_STS_2 0x53
+#define UB960_RR_SENSOR_STS_3 0x54
+#define UB960_RR_RX_PAR_ERR_HI 0x55
+#define UB960_RR_RX_PAR_ERR_LO 0x56
+#define UB960_RR_BIST_ERR_COUNT 0x57
+
+#define UB960_RR_BCC_CONFIG 0x58
+#define UB960_RR_BCC_CONFIG_I2C_PASS_THROUGH BIT(6)
+#define UB960_RR_BCC_CONFIG_BC_FREQ_SEL_MASK GENMASK(2, 0)
+
+#define UB960_RR_DATAPATH_CTL1 0x59
+#define UB960_RR_DATAPATH_CTL2 0x5a
+#define UB960_RR_SER_ID 0x5b
+#define UB960_RR_SER_ALIAS_ID 0x5c
+
+/* For these two register sets: n < UB960_MAX_PORT_ALIASES */
+#define UB960_RR_SLAVE_ID(n) (0x5d + (n))
+#define UB960_RR_SLAVE_ALIAS(n) (0x65 + (n))
+
+#define UB960_RR_PORT_CONFIG 0x6d
+#define UB960_RR_PORT_CONFIG_FPD3_MODE_MASK GENMASK(1, 0)
+
+#define UB960_RR_BC_GPIO_CTL(n) (0x6e + (n)) /* n < 2 */
+#define UB960_RR_RAW10_ID 0x70
+#define UB960_RR_RAW10_ID_VC_SHIFT 6
+#define UB960_RR_RAW10_ID_DT_SHIFT 0
+
+#define UB960_RR_RAW12_ID 0x71
+#define UB960_RR_CSI_VC_MAP 0x72
+#define UB960_RR_CSI_VC_MAP_SHIFT(x) ((x) * 2)
+
+#define UB960_RR_LINE_COUNT_HI 0x73
+#define UB960_RR_LINE_COUNT_LO 0x74
+#define UB960_RR_LINE_LEN_1 0x75
+#define UB960_RR_LINE_LEN_0 0x76
+#define UB960_RR_FREQ_DET_CTL 0x77
+#define UB960_RR_MAILBOX_1 0x78
+#define UB960_RR_MAILBOX_2 0x79
+
+#define UB960_RR_CSI_RX_STS 0x7a
+#define UB960_RR_CSI_RX_STS_LENGTH_ERR BIT(3)
+#define UB960_RR_CSI_RX_STS_CKSUM_ERR BIT(2)
+#define UB960_RR_CSI_RX_STS_ECC2_ERR BIT(1)
+#define UB960_RR_CSI_RX_STS_ECC1_ERR BIT(0)
+#define UB960_RR_CSI_RX_STS_ERROR_MASK \
+ (UB960_RR_CSI_RX_STS_LENGTH_ERR | UB960_RR_CSI_RX_STS_CKSUM_ERR | \
+ UB960_RR_CSI_RX_STS_ECC2_ERR | UB960_RR_CSI_RX_STS_ECC1_ERR)
+
+#define UB960_RR_CSI_ERR_COUNTER 0x7b
+#define UB960_RR_PORT_CONFIG2 0x7c
+#define UB960_RR_PORT_CONFIG2_RAW10_8BIT_CTL_MASK GENMASK(7, 6)
+#define UB960_RR_PORT_CONFIG2_RAW10_8BIT_CTL_SHIFT 6
+
+#define UB960_RR_PORT_CONFIG2_LV_POL_LOW BIT(1)
+#define UB960_RR_PORT_CONFIG2_FV_POL_LOW BIT(0)
+
+#define UB960_RR_PORT_PASS_CTL 0x7d
+#define UB960_RR_SEN_INT_RISE_CTL 0x7e
+#define UB960_RR_SEN_INT_FALL_CTL 0x7f
+
+#define UB960_SR_CSI_FRAME_COUNT_HI(n) (0x90 + 8 * (n))
+#define UB960_SR_CSI_FRAME_COUNT_LO(n) (0x91 + 8 * (n))
+#define UB960_SR_CSI_FRAME_ERR_COUNT_HI(n) (0x92 + 8 * (n))
+#define UB960_SR_CSI_FRAME_ERR_COUNT_LO(n) (0x93 + 8 * (n))
+#define UB960_SR_CSI_LINE_COUNT_HI(n) (0x94 + 8 * (n))
+#define UB960_SR_CSI_LINE_COUNT_LO(n) (0x95 + 8 * (n))
+#define UB960_SR_CSI_LINE_ERR_COUNT_HI(n) (0x96 + 8 * (n))
+#define UB960_SR_CSI_LINE_ERR_COUNT_LO(n) (0x97 + 8 * (n))
+
+#define UB960_XR_REFCLK_FREQ 0xa5 /* UB960 */
+
+#define UB960_RR_VC_ID_MAP(x) (0xa0 + (x)) /* UB9702 */
+
+#define UB960_SR_IND_ACC_CTL 0xb0
+#define UB960_SR_IND_ACC_CTL_IA_AUTO_INC BIT(1)
+
+#define UB960_SR_IND_ACC_ADDR 0xb1
+#define UB960_SR_IND_ACC_DATA 0xb2
+#define UB960_SR_BIST_CONTROL 0xb3
+#define UB960_SR_MODE_IDX_STS 0xb8
+#define UB960_SR_LINK_ERROR_COUNT 0xb9
+#define UB960_SR_FPD3_ENC_CTL 0xba
+#define UB960_SR_FV_MIN_TIME 0xbc
+#define UB960_SR_GPIO_PD_CTL 0xbe
+
+#define UB960_SR_FPD_RATE_CFG 0xc2 /* UB9702 */
+#define UB960_SR_CSI_PLL_DIV 0xc9 /* UB9702 */
+
+#define UB960_RR_PORT_DEBUG 0xd0
+#define UB960_RR_AEQ_CTL2 0xd2
+#define UB960_RR_AEQ_CTL2_SET_AEQ_FLOOR BIT(2)
+
+#define UB960_RR_AEQ_STATUS 0xd3
+#define UB960_RR_AEQ_STATUS_STATUS_2 GENMASK(5, 3)
+#define UB960_RR_AEQ_STATUS_STATUS_1 GENMASK(2, 0)
+
+#define UB960_RR_AEQ_BYPASS 0xd4
+#define UB960_RR_AEQ_BYPASS_EQ_STAGE1_VALUE_SHIFT 5
+#define UB960_RR_AEQ_BYPASS_EQ_STAGE1_VALUE_MASK GENMASK(7, 5)
+#define UB960_RR_AEQ_BYPASS_EQ_STAGE2_VALUE_SHIFT 1
+#define UB960_RR_AEQ_BYPASS_EQ_STAGE2_VALUE_MASK GENMASK(3, 1)
+#define UB960_RR_AEQ_BYPASS_ENABLE BIT(0)
+
+#define UB960_RR_AEQ_MIN_MAX 0xd5
+#define UB960_RR_AEQ_MIN_MAX_AEQ_MAX_SHIFT 4
+#define UB960_RR_AEQ_MIN_MAX_AEQ_FLOOR_SHIFT 0
+
+#define UB960_RR_SFILTER_STS_0 0xd6
+#define UB960_RR_SFILTER_STS_1 0xd7
+#define UB960_RR_PORT_ICR_HI 0xd8
+#define UB960_RR_PORT_ICR_LO 0xd9
+#define UB960_RR_PORT_ISR_HI 0xda
+#define UB960_RR_PORT_ISR_LO 0xdb
+#define UB960_RR_FC_GPIO_STS 0xdc
+#define UB960_RR_FC_GPIO_ICR 0xdd
+#define UB960_RR_SEN_INT_RISE_STS 0xde
+#define UB960_RR_SEN_INT_FALL_STS 0xdf
+
+#define UB960_RR_CHANNEL_MODE 0xe4 /* UB9702 */
+
+#define UB960_SR_FPD3_RX_ID(n) (0xf0 + (n))
+
+#define UB960_SR_I2C_RX_ID(n) (0xf8 + (n)) /* < UB960_FPD_RX_NPORTS */
+
+/* Indirect register blocks */
+#define UB960_IND_TARGET_PAT_GEN 0x00
+#define UB960_IND_TARGET_RX_ANA(n) (0x01 + (n))
+#define UB960_IND_TARGET_CSI_CSIPLL_REG_1 0x92 /* UB9702 */
+#define UB960_IND_TARGET_CSI_ANA 0x07
+
+/* UB960_IR_PGEN_*: Indirect Registers for Test Pattern Generator */
+
+#define UB960_IR_PGEN_CTL 0x01
+#define UB960_IR_PGEN_CTL_PGEN_ENABLE BIT(0)
+
+#define UB960_IR_PGEN_CFG 0x02
+#define UB960_IR_PGEN_CSI_DI 0x03
+#define UB960_IR_PGEN_LINE_SIZE1 0x04
+#define UB960_IR_PGEN_LINE_SIZE0 0x05
+#define UB960_IR_PGEN_BAR_SIZE1 0x06
+#define UB960_IR_PGEN_BAR_SIZE0 0x07
+#define UB960_IR_PGEN_ACT_LPF1 0x08
+#define UB960_IR_PGEN_ACT_LPF0 0x09
+#define UB960_IR_PGEN_TOT_LPF1 0x0a
+#define UB960_IR_PGEN_TOT_LPF0 0x0b
+#define UB960_IR_PGEN_LINE_PD1 0x0c
+#define UB960_IR_PGEN_LINE_PD0 0x0d
+#define UB960_IR_PGEN_VBP 0x0e
+#define UB960_IR_PGEN_VFP 0x0f
+#define UB960_IR_PGEN_COLOR(n) (0x10 + (n)) /* n < 15 */
+
+#define UB960_IR_RX_ANA_STROBE_SET_CLK 0x08
+#define UB960_IR_RX_ANA_STROBE_SET_CLK_NO_EXTRA_DELAY BIT(3)
+#define UB960_IR_RX_ANA_STROBE_SET_CLK_DELAY_MASK GENMASK(2, 0)
+
+#define UB960_IR_RX_ANA_STROBE_SET_DATA 0x09
+#define UB960_IR_RX_ANA_STROBE_SET_DATA_NO_EXTRA_DELAY BIT(3)
+#define UB960_IR_RX_ANA_STROBE_SET_DATA_DELAY_MASK GENMASK(2, 0)
+
+/* EQ related */
+
+#define UB960_MIN_AEQ_STROBE_POS -7
+#define UB960_MAX_AEQ_STROBE_POS 7
+
+#define UB960_MANUAL_STROBE_EXTRA_DELAY 6
+
+#define UB960_MIN_MANUAL_STROBE_POS -(7 + UB960_MANUAL_STROBE_EXTRA_DELAY)
+#define UB960_MAX_MANUAL_STROBE_POS (7 + UB960_MANUAL_STROBE_EXTRA_DELAY)
+#define UB960_NUM_MANUAL_STROBE_POS (UB960_MAX_MANUAL_STROBE_POS - UB960_MIN_MANUAL_STROBE_POS + 1)
+
+#define UB960_MIN_EQ_LEVEL 0
+#define UB960_MAX_EQ_LEVEL 14
+#define UB960_NUM_EQ_LEVELS (UB960_MAX_EQ_LEVEL - UB960_MIN_EQ_LEVEL + 1)
+
+struct ub960_hw_data {
+ const char *model;
+ u8 num_rxports;
+ u8 num_txports;
+ bool is_ub9702;
+ bool is_fpdlink4;
+};
+
+enum ub960_rxport_mode {
+ RXPORT_MODE_RAW10 = 0,
+ RXPORT_MODE_RAW12_HF = 1,
+ RXPORT_MODE_RAW12_LF = 2,
+ RXPORT_MODE_CSI2_SYNC = 3,
+ RXPORT_MODE_CSI2_ASYNC = 4,
+ RXPORT_MODE_LAST = RXPORT_MODE_CSI2_ASYNC,
+};
+
+enum ub960_rxport_cdr {
+ RXPORT_CDR_FPD3 = 0,
+ RXPORT_CDR_FPD4 = 1,
+ RXPORT_CDR_LAST = RXPORT_CDR_FPD4,
+};
+
+struct ub960_rxport {
+ struct ub960_data *priv;
+ u8 nport; /* RX port number, and index in priv->rxport[] */
+
+ struct {
+ struct v4l2_subdev *sd;
+ u16 pad;
+ struct fwnode_handle *ep_fwnode;
+ } source;
+
+ /* Serializer */
+ struct {
+ struct fwnode_handle *fwnode;
+ struct i2c_client *client;
+ unsigned short alias; /* I2C alias (lower 7 bits) */
+ struct ds90ub9xx_platform_data pdata;
+ } ser;
+
+ enum ub960_rxport_mode rx_mode;
+ enum ub960_rxport_cdr cdr_mode;
+
+ u8 lv_fv_pol; /* LV and FV polarities */
+
+ struct regulator *vpoc;
+
+ /* EQ settings */
+ struct {
+ bool manual_eq;
+
+ s8 strobe_pos;
+
+ union {
+ struct {
+ u8 eq_level_min;
+ u8 eq_level_max;
+ } aeq;
+
+ struct {
+ u8 eq_level;
+ } manual;
+ };
+ } eq;
+};
+
+struct ub960_asd {
+ struct v4l2_async_subdev base;
+ struct ub960_rxport *rxport;
+};
+
+static inline struct ub960_asd *to_ub960_asd(struct v4l2_async_subdev *asd)
+{
+ return container_of(asd, struct ub960_asd, base);
+}
+
+struct ub960_txport {
+ struct ub960_data *priv;
+ u8 nport; /* TX port number, and index in priv->txport[] */
+
+ u32 num_data_lanes;
+};
+
+struct atr_alias_table_entry {
+ u16 alias_id; /* Alias ID from DT */
+
+ bool in_use;
+ u8 nport;
+ u8 slave_id; /* i2c client's local i2c address */
+ u8 port_reg_idx;
+};
+
+struct ub960_data {
+ const struct ub960_hw_data *hw_data;
+ struct i2c_client *client; /* for shared local registers */
+ struct regmap *regmap;
+
+ /* lock for register access */
+ struct mutex reg_lock;
+
+ struct clk *refclk;
+
+ struct regulator *vddio;
+
+ struct gpio_desc *pd_gpio;
+ struct delayed_work poll_work;
+ struct ub960_rxport *rxports[UB960_MAX_RX_NPORTS];
+ struct ub960_txport *txports[UB960_MAX_TX_NPORTS];
+
+ struct v4l2_subdev sd;
+ struct media_pad pads[UB960_MAX_NPORTS];
+
+ struct v4l2_ctrl_handler ctrl_handler;
+ struct v4l2_async_notifier notifier;
+
+ u32 tx_data_rate; /* Nominal data rate (Gb/s) */
+ s64 tx_link_freq[1];
+
+ struct {
+ struct i2c_atr *atr;
+
+ /* Protects fields below in this struct */
+ struct mutex lock;
+ size_t num_aliases;
+ struct atr_alias_table_entry *aliases;
+ } atr;
+
+ struct {
+ u8 rxport;
+ u8 txport;
+ u8 indirect_target;
+ } reg_current;
+
+ bool streaming;
+
+ u8 stored_fwd_ctl;
+
+ u64 stream_enable_mask[UB960_MAX_NPORTS];
+
+ /* These are common to all ports */
+ struct {
+ bool manual;
+
+ s8 min;
+ s8 max;
+ } strobe;
+};
+
+static inline struct ub960_data *sd_to_ub960(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct ub960_data, sd);
+}
+
+static inline bool ub960_pad_is_sink(struct ub960_data *priv, u32 pad)
+{
+ return pad < priv->hw_data->num_rxports;
+}
+
+static inline bool ub960_pad_is_source(struct ub960_data *priv, u32 pad)
+{
+ return pad >= priv->hw_data->num_rxports;
+}
+
+static inline unsigned int ub960_pad_to_port(struct ub960_data *priv, u32 pad)
+{
+ if (ub960_pad_is_sink(priv, pad))
+ return pad;
+ else
+ return pad - priv->hw_data->num_rxports;
+}
+
+struct ub960_format_info {
+ u32 code;
+ u32 bpp;
+ u8 datatype;
+ bool meta;
+};
+
+static const struct ub960_format_info ub960_formats[] = {
+ { .code = MEDIA_BUS_FMT_YUYV8_1X16, .bpp = 16, .datatype = MIPI_CSI2_DT_YUV422_8B, },
+ { .code = MEDIA_BUS_FMT_UYVY8_1X16, .bpp = 16, .datatype = MIPI_CSI2_DT_YUV422_8B, },
+ { .code = MEDIA_BUS_FMT_VYUY8_1X16, .bpp = 16, .datatype = MIPI_CSI2_DT_YUV422_8B, },
+ { .code = MEDIA_BUS_FMT_YVYU8_1X16, .bpp = 16, .datatype = MIPI_CSI2_DT_YUV422_8B, },
+
+ { .code = MEDIA_BUS_FMT_SBGGR12_1X12, .bpp = 12, .datatype = MIPI_CSI2_DT_RAW12, },
+ { .code = MEDIA_BUS_FMT_SGBRG12_1X12, .bpp = 12, .datatype = MIPI_CSI2_DT_RAW12, },
+ { .code = MEDIA_BUS_FMT_SGRBG12_1X12, .bpp = 12, .datatype = MIPI_CSI2_DT_RAW12, },
+ { .code = MEDIA_BUS_FMT_SRGGB12_1X12, .bpp = 12, .datatype = MIPI_CSI2_DT_RAW12, },
+};
+
+static const struct ub960_format_info *ub960_find_format(u32 code)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(ub960_formats); ++i) {
+ if (ub960_formats[i].code == code)
+ return &ub960_formats[i];
+ }
+
+ return NULL;
+}
+
+/* -----------------------------------------------------------------------------
+ * Basic device access
+ */
+
+static int ub960_read(struct ub960_data *priv, u8 reg, u8 *val)
+{
+ struct device *dev = &priv->client->dev;
+ unsigned int v;
+ int ret;
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = regmap_read(priv->regmap, reg, &v);
+ if (ret) {
+ dev_err(dev, "%s: cannot read register 0x%02x (%d)!\n",
+ __func__, reg, ret);
+ goto out_unlock;
+ }
+
+ *val = v;
+
+out_unlock:
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+static int ub960_write(struct ub960_data *priv, u8 reg, u8 val)
+{
+ struct device *dev = &priv->client->dev;
+ int ret;
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = regmap_write(priv->regmap, reg, val);
+ if (ret)
+ dev_err(dev, "%s: cannot write register 0x%02x (%d)!\n",
+ __func__, reg, ret);
+
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+static int ub960_update_bits(struct ub960_data *priv, u8 reg, u8 mask, u8 val)
+{
+ struct device *dev = &priv->client->dev;
+ int ret;
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = regmap_update_bits(priv->regmap, reg, mask, val);
+ if (ret)
+ dev_err(dev, "%s: cannot update register 0x%02x (%d)!\n",
+ __func__, reg, ret);
+
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+static int ub960_read16(struct ub960_data *priv, u8 reg, u16 *val)
+{
+ struct device *dev = &priv->client->dev;
+ unsigned int v1, v2;
+ int ret;
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = regmap_read(priv->regmap, reg, &v1);
+ if (ret) {
+ dev_err(dev, "%s: cannot read register 0x%02x (%d)!\n",
+ __func__, reg, ret);
+ goto out_unlock;
+ }
+
+ ret = regmap_read(priv->regmap, reg + 1, &v2);
+ if (ret) {
+ dev_err(dev, "%s: cannot read register 0x%02x (%d)!\n",
+ __func__, reg + 1, ret);
+ goto out_unlock;
+ }
+
+ *val = (v1 << 8) | v2;
+
+out_unlock:
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+static int ub960_rxport_select(struct ub960_data *priv, u8 nport)
+{
+ struct device *dev = &priv->client->dev;
+ int ret;
+
+ lockdep_assert_held(&priv->reg_lock);
+
+ if (priv->reg_current.rxport == nport)
+ return 0;
+
+ ret = regmap_write(priv->regmap, UB960_SR_FPD3_PORT_SEL,
+ (nport << 4) | BIT(nport));
+ if (ret) {
+ dev_err(dev, "%s: cannot select rxport %d (%d)!\n", __func__,
+ nport, ret);
+ return ret;
+ }
+
+ priv->reg_current.rxport = nport;
+
+ return 0;
+}
+
+static int ub960_rxport_read(struct ub960_data *priv, u8 nport, u8 reg, u8 *val)
+{
+ struct device *dev = &priv->client->dev;
+ unsigned int v;
+ int ret;
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = ub960_rxport_select(priv, nport);
+ if (ret)
+ goto out_unlock;
+
+ ret = regmap_read(priv->regmap, reg, &v);
+ if (ret) {
+ dev_err(dev, "%s: cannot read register 0x%02x (%d)!\n",
+ __func__, reg, ret);
+ goto out_unlock;
+ }
+
+ *val = v;
+
+out_unlock:
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+static int ub960_rxport_write(struct ub960_data *priv, u8 nport, u8 reg, u8 val)
+{
+ struct device *dev = &priv->client->dev;
+ int ret;
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = ub960_rxport_select(priv, nport);
+ if (ret)
+ goto out_unlock;
+
+ ret = regmap_write(priv->regmap, reg, val);
+ if (ret)
+ dev_err(dev, "%s: cannot write register 0x%02x (%d)!\n",
+ __func__, reg, ret);
+
+out_unlock:
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+static int ub960_rxport_update_bits(struct ub960_data *priv, u8 nport, u8 reg,
+ u8 mask, u8 val)
+{
+ struct device *dev = &priv->client->dev;
+ int ret;
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = ub960_rxport_select(priv, nport);
+ if (ret)
+ goto out_unlock;
+
+ ret = regmap_update_bits(priv->regmap, reg, mask, val);
+ if (ret)
+ dev_err(dev, "%s: cannot update register 0x%02x (%d)!\n",
+ __func__, reg, ret);
+
+out_unlock:
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+static int ub960_rxport_read16(struct ub960_data *priv, u8 nport, u8 reg,
+ u16 *val)
+{
+ struct device *dev = &priv->client->dev;
+ unsigned int v1;
+ unsigned int v2;
+ int ret;
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = ub960_rxport_select(priv, nport);
+ if (ret)
+ goto out_unlock;
+
+ ret = regmap_read(priv->regmap, reg, &v1);
+ if (ret) {
+ dev_err(dev, "%s: cannot read register 0x%02x (%d)!\n",
+ __func__, reg, ret);
+ goto out_unlock;
+ }
+
+ ret = regmap_read(priv->regmap, reg + 1, &v2);
+ if (ret) {
+ dev_err(dev, "%s: cannot read register 0x%02x (%d)!\n",
+ __func__, reg + 1, ret);
+ goto out_unlock;
+ }
+
+ *val = (v1 << 8) | v2;
+
+out_unlock:
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+static int ub960_txport_select(struct ub960_data *priv, u8 nport)
+{
+ struct device *dev = &priv->client->dev;
+ int ret;
+
+ lockdep_assert_held(&priv->reg_lock);
+
+ if (priv->reg_current.txport == nport)
+ return 0;
+
+ ret = regmap_write(priv->regmap, UB960_SR_CSI_PORT_SEL,
+ (nport << 4) | BIT(nport));
+ if (ret) {
+ dev_err(dev, "%s: cannot select tx port %d (%d)!\n", __func__,
+ nport, ret);
+ return ret;
+ }
+
+ priv->reg_current.txport = nport;
+
+ return 0;
+}
+
+static int ub960_txport_read(struct ub960_data *priv, u8 nport, u8 reg, u8 *val)
+{
+ struct device *dev = &priv->client->dev;
+ unsigned int v;
+ int ret;
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = ub960_txport_select(priv, nport);
+ if (ret)
+ goto out_unlock;
+
+ ret = regmap_read(priv->regmap, reg, &v);
+ if (ret) {
+ dev_err(dev, "%s: cannot read register 0x%02x (%d)!\n",
+ __func__, reg, ret);
+ goto out_unlock;
+ }
+
+ *val = v;
+
+out_unlock:
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+static int ub960_txport_write(struct ub960_data *priv, u8 nport, u8 reg, u8 val)
+{
+ struct device *dev = &priv->client->dev;
+ int ret;
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = ub960_txport_select(priv, nport);
+ if (ret)
+ goto out_unlock;
+
+ ret = regmap_write(priv->regmap, reg, val);
+ if (ret)
+ dev_err(dev, "%s: cannot write register 0x%02x (%d)!\n",
+ __func__, reg, ret);
+
+out_unlock:
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+static int ub960_txport_update_bits(struct ub960_data *priv, u8 nport, u8 reg,
+ u8 mask, u8 val)
+{
+ struct device *dev = &priv->client->dev;
+ int ret;
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = ub960_txport_select(priv, nport);
+ if (ret)
+ goto out_unlock;
+
+ ret = regmap_update_bits(priv->regmap, reg, mask, val);
+ if (ret)
+ dev_err(dev, "%s: cannot update register 0x%02x (%d)!\n",
+ __func__, reg, ret);
+
+out_unlock:
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+static int ub960_select_ind_reg_block(struct ub960_data *priv, u8 block)
+{
+ struct device *dev = &priv->client->dev;
+ int ret;
+
+ lockdep_assert_held(&priv->reg_lock);
+
+ if (priv->reg_current.indirect_target == block)
+ return 0;
+
+ ret = regmap_write(priv->regmap, UB960_SR_IND_ACC_CTL, block << 2);
+ if (ret) {
+ dev_err(dev, "%s: cannot select indirect target %u (%d)!\n",
+ __func__, block, ret);
+ return ret;
+ }
+
+ priv->reg_current.indirect_target = block;
+
+ return 0;
+}
+
+static int ub960_read_ind(struct ub960_data *priv, u8 block, u8 reg, u8 *val)
+{
+ struct device *dev = &priv->client->dev;
+ unsigned int v;
+ int ret;
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = ub960_select_ind_reg_block(priv, block);
+ if (ret)
+ goto out_unlock;
+
+ ret = regmap_write(priv->regmap, UB960_SR_IND_ACC_ADDR, reg);
+ if (ret) {
+ dev_err(dev,
+ "Write to IND_ACC_ADDR failed when reading %u:%x02x: %d\n",
+ block, reg, ret);
+ goto out_unlock;
+ }
+
+ ret = regmap_read(priv->regmap, UB960_SR_IND_ACC_DATA, &v);
+ if (ret) {
+ dev_err(dev,
+ "Write to IND_ACC_DATA failed when reading %u:%x02x: %d\n",
+ block, reg, ret);
+ goto out_unlock;
+ }
+
+ *val = v;
+
+out_unlock:
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+static int ub960_write_ind(struct ub960_data *priv, u8 block, u8 reg, u8 val)
+{
+ struct device *dev = &priv->client->dev;
+ int ret;
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = ub960_select_ind_reg_block(priv, block);
+ if (ret)
+ goto out_unlock;
+
+ ret = regmap_write(priv->regmap, UB960_SR_IND_ACC_ADDR, reg);
+ if (ret) {
+ dev_err(dev,
+ "Write to IND_ACC_ADDR failed when writing %u:%x02x: %d\n",
+ block, reg, ret);
+ goto out_unlock;
+ }
+
+ ret = regmap_write(priv->regmap, UB960_SR_IND_ACC_DATA, val);
+ if (ret) {
+ dev_err(dev,
+ "Write to IND_ACC_DATA failed when writing %u:%x02x: %d\n",
+ block, reg, ret);
+ goto out_unlock;
+ }
+
+out_unlock:
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+static int ub960_ind_update_bits(struct ub960_data *priv, u8 block, u8 reg,
+ u8 mask, u8 val)
+{
+ struct device *dev = &priv->client->dev;
+ int ret;
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = ub960_select_ind_reg_block(priv, block);
+ if (ret)
+ goto out_unlock;
+
+ ret = regmap_write(priv->regmap, UB960_SR_IND_ACC_ADDR, reg);
+ if (ret) {
+ dev_err(dev,
+ "Write to IND_ACC_ADDR failed when updating %u:%x02x: %d\n",
+ block, reg, ret);
+ goto out_unlock;
+ }
+
+ ret = regmap_update_bits(priv->regmap, UB960_SR_IND_ACC_DATA, mask,
+ val);
+ if (ret) {
+ dev_err(dev,
+ "Write to IND_ACC_DATA failed when updating %u:%x02x: %d\n",
+ block, reg, ret);
+ goto out_unlock;
+ }
+
+out_unlock:
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+/* -----------------------------------------------------------------------------
+ * I2C-ATR (address translator)
+ */
+
+static int ub960_atr_attach_client(struct i2c_atr *atr, u32 chan_id,
+ const struct i2c_client *client,
+ u16 *alias_id)
+{
+ struct ub960_data *priv = i2c_atr_get_driver_data(atr);
+ struct ub960_rxport *rxport = priv->rxports[chan_id];
+ struct device *dev = &priv->client->dev;
+ struct atr_alias_table_entry *entry = NULL;
+ unsigned int reg_idx;
+ unsigned int pool_idx;
+ u16 alias;
+ int ret = 0;
+ u8 port_reg_idx_mask = 0;
+
+ mutex_lock(&priv->atr.lock);
+
+ /*
+ * Go through the alias table and:
+ * 1. Look for an unreserved entry
+ * 2. Construct a bitmask of port's used alias entries
+ */
+
+ for (pool_idx = 0; pool_idx < priv->atr.num_aliases; ++pool_idx) {
+ struct atr_alias_table_entry *e;
+
+ e = &priv->atr.aliases[pool_idx];
+
+ if (!entry && !e->in_use)
+ entry = e;
+
+ if (e->in_use && e->nport == rxport->nport)
+ port_reg_idx_mask |= BIT(e->port_reg_idx);
+ }
+
+ if (!entry) {
+ dev_err(dev, "rx%u: alias pool exhausted\n", rxport->nport);
+ ret = -EADDRNOTAVAIL;
+ goto out_unlock;
+ }
+
+ if (port_reg_idx_mask == GENMASK(UB960_MAX_PORT_ALIASES - 1, 0)) {
+ dev_err(dev, "rx%u: all aliases in use\n", rxport->nport);
+ ret = -EADDRNOTAVAIL;
+ goto out_unlock;
+ }
+
+ alias = entry->alias_id;
+
+ reg_idx = ffz(port_reg_idx_mask);
+
+ entry->in_use = true;
+ entry->nport = rxport->nport;
+ entry->slave_id = client->addr;
+ entry->port_reg_idx = reg_idx;
+
+ /* Map alias to slave */
+
+ ub960_rxport_write(priv, chan_id, UB960_RR_SLAVE_ID(reg_idx),
+ client->addr << 1);
+ ub960_rxport_write(priv, chan_id, UB960_RR_SLAVE_ALIAS(reg_idx),
+ alias << 1);
+
+ *alias_id = alias; /* tell the atr which alias we chose */
+
+out_unlock:
+ mutex_unlock(&priv->atr.lock);
+ return ret;
+}
+
+static void ub960_atr_detach_client(struct i2c_atr *atr, u32 chan_id,
+ const struct i2c_client *client)
+{
+ struct ub960_data *priv = i2c_atr_get_driver_data(atr);
+ struct ub960_rxport *rxport = priv->rxports[chan_id];
+ struct device *dev = &priv->client->dev;
+ struct atr_alias_table_entry *entry;
+ unsigned int reg_idx;
+ unsigned int pool_idx;
+
+ mutex_lock(&priv->atr.lock);
+
+ /* Find alias mapped to this client */
+
+ for (pool_idx = 0; pool_idx < priv->atr.num_aliases; ++pool_idx) {
+ entry = &priv->atr.aliases[pool_idx];
+
+ if (entry->in_use && entry->nport == rxport->nport &&
+ entry->slave_id == client->addr)
+ break;
+ }
+
+ if (pool_idx == priv->atr.num_aliases) {
+ dev_err(dev, "rx%u: client 0x%02x is not mapped!\n",
+ rxport->nport, client->addr);
+ goto out_unlock;
+ }
+
+ reg_idx = entry->port_reg_idx;
+
+ /* Unmap */
+
+ ub960_rxport_write(priv, chan_id, UB960_RR_SLAVE_ALIAS(reg_idx), 0);
+
+ entry->in_use = false;
+
+out_unlock:
+ mutex_unlock(&priv->atr.lock);
+}
+
+static const struct i2c_atr_ops ub960_atr_ops = {
+ .attach_client = ub960_atr_attach_client,
+ .detach_client = ub960_atr_detach_client,
+};
+
+static int ub960_init_atr(struct ub960_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ struct i2c_adapter *parent_adap = priv->client->adapter;
+
+ priv->atr.atr = i2c_atr_new(parent_adap, dev, &ub960_atr_ops,
+ priv->hw_data->num_rxports);
+ if (IS_ERR(priv->atr.atr))
+ return PTR_ERR(priv->atr.atr);
+
+ i2c_atr_set_driver_data(priv->atr.atr, priv);
+
+ return 0;
+}
+
+static void ub960_uninit_atr(struct ub960_data *priv)
+{
+ i2c_atr_delete(priv->atr.atr);
+ priv->atr.atr = NULL;
+}
+
+/* -----------------------------------------------------------------------------
+ * TX ports
+ */
+
+static int ub960_parse_dt_txport(struct ub960_data *priv,
+ struct fwnode_handle *ep_fwnode,
+ u8 nport)
+{
+ struct device *dev = &priv->client->dev;
+ struct v4l2_fwnode_endpoint vep = {};
+ struct ub960_txport *txport;
+ int ret;
+
+ txport = kzalloc(sizeof(*txport), GFP_KERNEL);
+ if (!txport)
+ return -ENOMEM;
+
+ txport->priv = priv;
+ txport->nport = nport;
+
+ vep.bus_type = V4L2_MBUS_CSI2_DPHY;
+ ret = v4l2_fwnode_endpoint_alloc_parse(ep_fwnode, &vep);
+ if (ret) {
+ dev_err(dev, "tx%u: failed to parse endpoint data\n", nport);
+ goto err_free_txport;
+ }
+
+ txport->num_data_lanes = vep.bus.mipi_csi2.num_data_lanes;
+
+ if (vep.nr_of_link_frequencies != 1) {
+ ret = -EINVAL;
+ goto err_free_vep;
+ }
+
+ priv->tx_link_freq[0] = vep.link_frequencies[0];
+ priv->tx_data_rate = priv->tx_link_freq[0] * 2;
+
+ if (priv->tx_data_rate != MHZ(1600) &&
+ priv->tx_data_rate != MHZ(1200) &&
+ priv->tx_data_rate != MHZ(800) &&
+ priv->tx_data_rate != MHZ(400)) {
+ dev_err(dev, "tx%u: invalid 'link-frequencies' value\n", nport);
+ ret = -EINVAL;
+ goto err_free_vep;
+ }
+
+ v4l2_fwnode_endpoint_free(&vep);
+
+ priv->txports[nport] = txport;
+
+ return 0;
+
+err_free_vep:
+ v4l2_fwnode_endpoint_free(&vep);
+err_free_txport:
+ kfree(txport);
+
+ return ret;
+}
+
+static void ub960_csi_handle_events(struct ub960_data *priv, u8 nport)
+{
+ struct device *dev = &priv->client->dev;
+ u8 csi_tx_isr;
+ int ret;
+
+ ret = ub960_txport_read(priv, nport, UB960_TR_CSI_TX_ISR, &csi_tx_isr);
+ if (ret)
+ return;
+
+ if (csi_tx_isr & UB960_TR_CSI_TX_ISR_IS_CSI_SYNC_ERROR)
+ dev_warn(dev, "TX%u: CSI_SYNC_ERROR\n", nport);
+
+ if (csi_tx_isr & UB960_TR_CSI_TX_ISR_IS_CSI_PASS_ERROR)
+ dev_warn(dev, "TX%u: CSI_PASS_ERROR\n", nport);
+}
+
+/* -----------------------------------------------------------------------------
+ * RX ports
+ */
+
+static int ub960_rxport_enable_vpocs(struct ub960_data *priv)
+{
+ unsigned int nport;
+ int ret;
+
+ for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ struct ub960_rxport *rxport = priv->rxports[nport];
+
+ if (!rxport || !rxport->vpoc)
+ continue;
+
+ ret = regulator_enable(rxport->vpoc);
+ if (ret)
+ goto err_disable_vpocs;
+ }
+
+ return 0;
+
+err_disable_vpocs:
+ while (nport--) {
+ struct ub960_rxport *rxport = priv->rxports[nport];
+
+ if (!rxport || !rxport->vpoc)
+ continue;
+
+ regulator_disable(rxport->vpoc);
+ }
+
+ return ret;
+}
+
+static void ub960_rxport_disable_vpocs(struct ub960_data *priv)
+{
+ unsigned int nport;
+
+ for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ struct ub960_rxport *rxport = priv->rxports[nport];
+
+ if (!rxport || !rxport->vpoc)
+ continue;
+
+ regulator_disable(rxport->vpoc);
+ }
+}
+
+static void ub960_rxport_clear_errors(struct ub960_data *priv,
+ unsigned int nport)
+{
+ u8 v;
+
+ ub960_rxport_read(priv, nport, UB960_RR_RX_PORT_STS1, &v);
+ ub960_rxport_read(priv, nport, UB960_RR_RX_PORT_STS2, &v);
+ ub960_rxport_read(priv, nport, UB960_RR_CSI_RX_STS, &v);
+ ub960_rxport_read(priv, nport, UB960_RR_BCC_STATUS, &v);
+
+ ub960_rxport_read(priv, nport, UB960_RR_RX_PAR_ERR_HI, &v);
+ ub960_rxport_read(priv, nport, UB960_RR_RX_PAR_ERR_LO, &v);
+
+ ub960_rxport_read(priv, nport, UB960_RR_CSI_ERR_COUNTER, &v);
+}
+
+static void ub960_clear_rx_errors(struct ub960_data *priv)
+{
+ unsigned int nport;
+
+ for (nport = 0; nport < priv->hw_data->num_rxports; ++nport)
+ ub960_rxport_clear_errors(priv, nport);
+}
+
+static int ub960_rxport_get_strobe_pos(struct ub960_data *priv,
+ unsigned int nport, s8 *strobe_pos)
+{
+ u8 v;
+ u8 clk_delay, data_delay;
+ int ret;
+
+ ub960_read_ind(priv, UB960_IND_TARGET_RX_ANA(nport),
+ UB960_IR_RX_ANA_STROBE_SET_CLK, &v);
+
+ clk_delay = (v & UB960_IR_RX_ANA_STROBE_SET_CLK_NO_EXTRA_DELAY) ?
+ 0 : UB960_MANUAL_STROBE_EXTRA_DELAY;
+
+ ub960_read_ind(priv, UB960_IND_TARGET_RX_ANA(nport),
+ UB960_IR_RX_ANA_STROBE_SET_DATA, &v);
+
+ data_delay = (v & UB960_IR_RX_ANA_STROBE_SET_DATA_NO_EXTRA_DELAY) ?
+ 0 : UB960_MANUAL_STROBE_EXTRA_DELAY;
+
+ ret = ub960_rxport_read(priv, nport, UB960_RR_SFILTER_STS_0, &v);
+ if (ret)
+ return ret;
+
+ clk_delay += v & UB960_IR_RX_ANA_STROBE_SET_CLK_DELAY_MASK;
+
+ ub960_rxport_read(priv, nport, UB960_RR_SFILTER_STS_1, &v);
+ if (ret)
+ return ret;
+
+ data_delay += v & UB960_IR_RX_ANA_STROBE_SET_DATA_DELAY_MASK;
+
+ *strobe_pos = data_delay - clk_delay;
+
+ return 0;
+}
+
+static void ub960_rxport_set_strobe_pos(struct ub960_data *priv,
+ unsigned int nport, s8 strobe_pos)
+{
+ u8 clk_delay, data_delay;
+
+ clk_delay = UB960_IR_RX_ANA_STROBE_SET_CLK_NO_EXTRA_DELAY;
+ data_delay = UB960_IR_RX_ANA_STROBE_SET_DATA_NO_EXTRA_DELAY;
+
+ if (strobe_pos < UB960_MIN_AEQ_STROBE_POS)
+ clk_delay = abs(strobe_pos) - UB960_MANUAL_STROBE_EXTRA_DELAY;
+ else if (strobe_pos > UB960_MAX_AEQ_STROBE_POS)
+ data_delay = strobe_pos - UB960_MANUAL_STROBE_EXTRA_DELAY;
+ else if (strobe_pos < 0)
+ clk_delay = abs(strobe_pos) | UB960_IR_RX_ANA_STROBE_SET_CLK_NO_EXTRA_DELAY;
+ else if (strobe_pos > 0)
+ data_delay = strobe_pos | UB960_IR_RX_ANA_STROBE_SET_DATA_NO_EXTRA_DELAY;
+
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport),
+ UB960_IR_RX_ANA_STROBE_SET_CLK, clk_delay);
+
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport),
+ UB960_IR_RX_ANA_STROBE_SET_DATA, data_delay);
+}
+
+static void ub960_rxport_set_strobe_range(struct ub960_data *priv,
+ s8 strobe_min, s8 strobe_max)
+{
+ /* Convert the signed strobe pos to positive zero based value */
+ strobe_min -= UB960_MIN_AEQ_STROBE_POS;
+ strobe_max -= UB960_MIN_AEQ_STROBE_POS;
+
+ ub960_write(priv, UB960_XR_SFILTER_CFG,
+ ((u8)strobe_min << UB960_XR_SFILTER_CFG_SFILTER_MIN_SHIFT) |
+ ((u8)strobe_max << UB960_XR_SFILTER_CFG_SFILTER_MAX_SHIFT));
+}
+
+static int ub960_rxport_get_eq_level(struct ub960_data *priv,
+ unsigned int nport, u8 *eq_level)
+{
+ int ret;
+ u8 v;
+
+ ret = ub960_rxport_read(priv, nport, UB960_RR_AEQ_STATUS, &v);
+ if (ret)
+ return ret;
+
+ *eq_level = (v & UB960_RR_AEQ_STATUS_STATUS_1) +
+ (v & UB960_RR_AEQ_STATUS_STATUS_2);
+
+ return 0;
+}
+
+static void ub960_rxport_set_eq_level(struct ub960_data *priv,
+ unsigned int nport, u8 eq_level)
+{
+ u8 eq_stage_1_select_value, eq_stage_2_select_value;
+ const unsigned int eq_stage_max = 7;
+ u8 v;
+
+ if (eq_level <= eq_stage_max) {
+ eq_stage_1_select_value = eq_level;
+ eq_stage_2_select_value = 0;
+ } else {
+ eq_stage_1_select_value = eq_stage_max;
+ eq_stage_2_select_value = eq_level - eq_stage_max;
+ }
+
+ ub960_rxport_read(priv, nport, UB960_RR_AEQ_BYPASS, &v);
+
+ v &= ~(UB960_RR_AEQ_BYPASS_EQ_STAGE1_VALUE_MASK |
+ UB960_RR_AEQ_BYPASS_EQ_STAGE2_VALUE_MASK);
+ v |= eq_stage_1_select_value << UB960_RR_AEQ_BYPASS_EQ_STAGE1_VALUE_SHIFT;
+ v |= eq_stage_2_select_value << UB960_RR_AEQ_BYPASS_EQ_STAGE2_VALUE_SHIFT;
+ v |= UB960_RR_AEQ_BYPASS_ENABLE;
+
+ ub960_rxport_write(priv, nport, UB960_RR_AEQ_BYPASS, v);
+}
+
+static void ub960_rxport_set_eq_range(struct ub960_data *priv,
+ unsigned int nport, u8 eq_min, u8 eq_max)
+{
+ ub960_rxport_write(priv, nport, UB960_RR_AEQ_MIN_MAX,
+ (eq_min << UB960_RR_AEQ_MIN_MAX_AEQ_FLOOR_SHIFT) |
+ (eq_max << UB960_RR_AEQ_MIN_MAX_AEQ_MAX_SHIFT));
+
+ /* Enable AEQ min setting */
+ ub960_rxport_update_bits(priv, nport, UB960_RR_AEQ_CTL2,
+ UB960_RR_AEQ_CTL2_SET_AEQ_FLOOR,
+ UB960_RR_AEQ_CTL2_SET_AEQ_FLOOR);
+}
+
+static void ub960_rxport_config_eq(struct ub960_data *priv, unsigned int nport)
+{
+ struct ub960_rxport *rxport = priv->rxports[nport];
+
+ /* We also set common settings here. Should be moved elsewhere. */
+
+ if (priv->strobe.manual) {
+ /* Disable AEQ_SFILTER_EN */
+ ub960_update_bits(priv, UB960_XR_AEQ_CTL1,
+ UB960_XR_AEQ_CTL1_AEQ_SFILTER_EN, 0);
+ } else {
+ /* Enable SFILTER and error control */
+ ub960_write(priv, UB960_XR_AEQ_CTL1,
+ UB960_XR_AEQ_CTL1_AEQ_ERR_CTL_MASK |
+ UB960_XR_AEQ_CTL1_AEQ_SFILTER_EN);
+
+ /* Set AEQ strobe range */
+ ub960_rxport_set_strobe_range(priv, priv->strobe.min,
+ priv->strobe.max);
+ }
+
+ /* The rest are port specific */
+
+ if (priv->strobe.manual)
+ ub960_rxport_set_strobe_pos(priv, nport, rxport->eq.strobe_pos);
+ else
+ ub960_rxport_set_strobe_pos(priv, nport, 0);
+
+ if (rxport->eq.manual_eq) {
+ ub960_rxport_set_eq_level(priv, nport,
+ rxport->eq.manual.eq_level);
+
+ /* Enable AEQ Bypass */
+ ub960_rxport_update_bits(priv, nport, UB960_RR_AEQ_BYPASS,
+ UB960_RR_AEQ_BYPASS_ENABLE,
+ UB960_RR_AEQ_BYPASS_ENABLE);
+ } else {
+ ub960_rxport_set_eq_range(priv, nport,
+ rxport->eq.aeq.eq_level_min,
+ rxport->eq.aeq.eq_level_max);
+
+ /* Disable AEQ Bypass */
+ ub960_rxport_update_bits(priv, nport, UB960_RR_AEQ_BYPASS,
+ UB960_RR_AEQ_BYPASS_ENABLE, 0);
+ }
+}
+
+static int ub960_rxport_link_ok(struct ub960_data *priv, unsigned int nport,
+ bool *ok)
+{
+ u8 rx_port_sts1, rx_port_sts2;
+ u16 parity_errors;
+ u8 csi_rx_sts;
+ u8 csi_err_cnt;
+ u8 bcc_sts;
+ int ret;
+ bool errors;
+
+ ret = ub960_rxport_read(priv, nport, UB960_RR_RX_PORT_STS1,
+ &rx_port_sts1);
+ if (ret)
+ return ret;
+
+ if (!(rx_port_sts1 & UB960_RR_RX_PORT_STS1_LOCK_STS)) {
+ *ok = false;
+ return 0;
+ }
+
+ ret = ub960_rxport_read(priv, nport, UB960_RR_RX_PORT_STS2,
+ &rx_port_sts2);
+ if (ret)
+ return ret;
+
+ ret = ub960_rxport_read(priv, nport, UB960_RR_CSI_RX_STS, &csi_rx_sts);
+ if (ret)
+ return ret;
+
+ ret = ub960_rxport_read(priv, nport, UB960_RR_CSI_ERR_COUNTER,
+ &csi_err_cnt);
+ if (ret)
+ return ret;
+
+ ret = ub960_rxport_read(priv, nport, UB960_RR_BCC_STATUS, &bcc_sts);
+ if (ret)
+ return ret;
+
+ ret = ub960_rxport_read16(priv, nport, UB960_RR_RX_PAR_ERR_HI,
+ &parity_errors);
+ if (ret)
+ return ret;
+
+ errors = (rx_port_sts1 & UB960_RR_RX_PORT_STS1_ERROR_MASK) ||
+ (rx_port_sts2 & UB960_RR_RX_PORT_STS2_ERROR_MASK) ||
+ (bcc_sts & UB960_RR_BCC_STATUS_ERROR_MASK) ||
+ (csi_rx_sts & UB960_RR_CSI_RX_STS_ERROR_MASK) || csi_err_cnt ||
+ parity_errors;
+
+ *ok = !errors;
+
+ return 0;
+}
+
+/*
+ * Wait for the RX ports to lock, have no errors and have stable strobe position
+ * and EQ level.
+ */
+static int ub960_rxport_wait_locks(struct ub960_data *priv,
+ unsigned long port_mask,
+ unsigned int *lock_mask)
+{
+ struct device *dev = &priv->client->dev;
+ unsigned long timeout;
+ unsigned int link_ok_mask;
+ unsigned int missing;
+ unsigned int loops;
+ u8 nport;
+ int ret;
+
+ if (port_mask == 0) {
+ if (lock_mask)
+ *lock_mask = 0;
+ return 0;
+ }
+
+ if (port_mask >= BIT(priv->hw_data->num_rxports))
+ return -EINVAL;
+
+ timeout = jiffies + msecs_to_jiffies(1000);
+ loops = 0;
+ link_ok_mask = 0;
+
+ while (time_before(jiffies, timeout)) {
+ missing = 0;
+
+ for_each_set_bit(nport, &port_mask,
+ priv->hw_data->num_rxports) {
+ struct ub960_rxport *rxport = priv->rxports[nport];
+ bool ok;
+
+ if (!rxport)
+ continue;
+
+ ret = ub960_rxport_link_ok(priv, nport, &ok);
+ if (ret)
+ return ret;
+
+ /*
+ * We want the link to be ok for two consecutive loops,
+ * as a link could get established just before our test
+ * and drop soon after.
+ */
+ if (!ok || !(link_ok_mask & BIT(nport)))
+ missing++;
+
+ if (ok)
+ link_ok_mask |= BIT(nport);
+ else
+ link_ok_mask &= ~BIT(nport);
+ }
+
+ loops++;
+
+ if (missing == 0)
+ break;
+
+ msleep(50);
+ }
+
+ if (lock_mask)
+ *lock_mask = link_ok_mask;
+
+ dev_dbg(dev, "Wait locks done in %u loops\n", loops);
+ for_each_set_bit(nport, &port_mask, priv->hw_data->num_rxports) {
+ struct ub960_rxport *rxport = priv->rxports[nport];
+ s8 strobe_pos, eq_level;
+ u16 v;
+
+ if (!rxport)
+ continue;
+
+ if (!(link_ok_mask & BIT(nport))) {
+ dev_dbg(dev, "\trx%u: not locked\n", nport);
+ continue;
+ }
+
+ ub960_rxport_read16(priv, nport, UB960_RR_RX_FREQ_HIGH, &v);
+
+ ret = ub960_rxport_get_strobe_pos(priv, nport, &strobe_pos);
+ if (ret)
+ return ret;
+
+ ret = ub960_rxport_get_eq_level(priv, nport, &eq_level);
+ if (ret)
+ return ret;
+
+ dev_dbg(dev, "\trx%u: locked, SP: %d, EQ: %u, freq %llu Hz\n",
+ nport, strobe_pos, eq_level, (v * 1000000ULL) >> 8);
+ }
+
+ return 0;
+}
+
+static unsigned long ub960_calc_bc_clk_rate_ub960(struct ub960_data *priv,
+ struct ub960_rxport *rxport)
+{
+ unsigned int mult;
+ unsigned int div;
+
+ switch (rxport->rx_mode) {
+ case RXPORT_MODE_RAW10:
+ case RXPORT_MODE_RAW12_HF:
+ case RXPORT_MODE_RAW12_LF:
+ mult = 1;
+ div = 10;
+ break;
+
+ case RXPORT_MODE_CSI2_SYNC:
+ mult = 2;
+ div = 1;
+ break;
+
+ case RXPORT_MODE_CSI2_ASYNC:
+ mult = 2;
+ div = 5;
+ break;
+
+ default:
+ return 0;
+ }
+
+ return clk_get_rate(priv->refclk) * mult / div;
+}
+
+static unsigned long ub960_calc_bc_clk_rate_ub9702(struct ub960_data *priv,
+ struct ub960_rxport *rxport)
+{
+ switch (rxport->rx_mode) {
+ case RXPORT_MODE_RAW10:
+ case RXPORT_MODE_RAW12_HF:
+ case RXPORT_MODE_RAW12_LF:
+ return 2359400;
+
+ case RXPORT_MODE_CSI2_SYNC:
+ return 47187500;
+
+ case RXPORT_MODE_CSI2_ASYNC:
+ return 9437500;
+
+ default:
+ return 0;
+ }
+}
+
+static int ub960_rxport_add_serializer(struct ub960_data *priv, u8 nport)
+{
+ struct ub960_rxport *rxport = priv->rxports[nport];
+ struct device *dev = &priv->client->dev;
+ struct ds90ub9xx_platform_data *ser_pdata = &rxport->ser.pdata;
+ struct i2c_board_info ser_info = {
+ .of_node = to_of_node(rxport->ser.fwnode),
+ .fwnode = rxport->ser.fwnode,
+ .platform_data = ser_pdata,
+ };
+
+ ser_pdata->port = nport;
+ ser_pdata->atr = priv->atr.atr;
+ if (priv->hw_data->is_ub9702)
+ ser_pdata->bc_rate = ub960_calc_bc_clk_rate_ub9702(priv, rxport);
+ else
+ ser_pdata->bc_rate = ub960_calc_bc_clk_rate_ub960(priv, rxport);
+
+ /*
+ * The serializer is added under the same i2c adapter as the
+ * deserializer. This is not quite right, as the serializer is behind
+ * the FPD-Link.
+ */
+ ser_info.addr = rxport->ser.alias;
+ rxport->ser.client =
+ i2c_new_client_device(priv->client->adapter, &ser_info);
+ if (!rxport->ser.client) {
+ dev_err(dev, "rx%u: cannot add %s i2c device", nport,
+ ser_info.type);
+ return -EIO;
+ }
+
+ dev_dbg(dev, "rx%u: remote serializer at alias 0x%02x (%u-%04x)\n",
+ nport, rxport->ser.client->addr,
+ rxport->ser.client->adapter->nr, rxport->ser.client->addr);
+
+ return 0;
+}
+
+static void ub960_rxport_remove_serializer(struct ub960_data *priv, u8 nport)
+{
+ struct ub960_rxport *rxport = priv->rxports[nport];
+
+ i2c_unregister_device(rxport->ser.client);
+ rxport->ser.client = NULL;
+}
+
+/* Add serializer i2c devices for all initialized ports */
+static int ub960_rxport_add_serializers(struct ub960_data *priv)
+{
+ unsigned int nport;
+ int ret;
+
+ for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ struct ub960_rxport *rxport = priv->rxports[nport];
+
+ if (!rxport)
+ continue;
+
+ ret = ub960_rxport_add_serializer(priv, nport);
+ if (ret)
+ goto err_remove_sers;
+ }
+
+ return 0;
+
+err_remove_sers:
+ while (nport--) {
+ struct ub960_rxport *rxport = priv->rxports[nport];
+
+ if (!rxport)
+ continue;
+
+ ub960_rxport_remove_serializer(priv, nport);
+ }
+
+ return ret;
+}
+
+static void ub960_rxport_remove_serializers(struct ub960_data *priv)
+{
+ unsigned int nport;
+
+ for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ struct ub960_rxport *rxport = priv->rxports[nport];
+
+ if (!rxport)
+ continue;
+
+ ub960_rxport_remove_serializer(priv, nport);
+ }
+}
+
+static void ub960_init_tx_port(struct ub960_data *priv,
+ struct ub960_txport *txport)
+{
+ unsigned int nport = txport->nport;
+ u8 csi_ctl = 0;
+
+ /*
+ * From the datasheet: "initial CSI Skew-Calibration
+ * sequence [...] should be set when operating at 1.6 Gbps"
+ */
+ if (priv->tx_data_rate == MHZ(1600))
+ csi_ctl |= UB960_TR_CSI_CTL_CSI_CAL_EN;
+
+ csi_ctl |= (4 - txport->num_data_lanes) << 4;
+
+ ub960_txport_write(priv, nport, UB960_TR_CSI_CTL, csi_ctl);
+}
+
+static int ub960_init_tx_ports(struct ub960_data *priv)
+{
+ unsigned int nport;
+ u8 speed_select;
+ u8 pll_div;
+
+ /* TX ports */
+
+ switch (priv->tx_data_rate) {
+ case MHZ(1600):
+ default:
+ speed_select = 0;
+ pll_div = 0x10;
+ break;
+ case MHZ(1200):
+ speed_select = 1;
+ break;
+ case MHZ(800):
+ speed_select = 2;
+ pll_div = 0x10;
+ break;
+ case MHZ(400):
+ speed_select = 3;
+ pll_div = 0x10;
+ break;
+ }
+
+ ub960_write(priv, UB960_SR_CSI_PLL_CTL, speed_select);
+
+ if (priv->hw_data->is_ub9702) {
+ ub960_write(priv, UB960_SR_CSI_PLL_DIV, pll_div);
+
+ switch (priv->tx_data_rate) {
+ case MHZ(1600):
+ default:
+ ub960_write_ind(priv, UB960_IND_TARGET_CSI_ANA, 0x92, 0x80);
+ ub960_write_ind(priv, UB960_IND_TARGET_CSI_ANA, 0x4b, 0x2a);
+ break;
+ case MHZ(800):
+ ub960_write_ind(priv, UB960_IND_TARGET_CSI_ANA, 0x92, 0x90);
+ ub960_write_ind(priv, UB960_IND_TARGET_CSI_ANA, 0x4f, 0x2a);
+ ub960_write_ind(priv, UB960_IND_TARGET_CSI_ANA, 0x4b, 0x2a);
+ break;
+ case MHZ(400):
+ ub960_write_ind(priv, UB960_IND_TARGET_CSI_ANA, 0x92, 0xa0);
+ break;
+ }
+ }
+
+ for (nport = 0; nport < priv->hw_data->num_txports; ++nport) {
+ struct ub960_txport *txport = priv->txports[nport];
+
+ if (!txport)
+ continue;
+
+ ub960_init_tx_port(priv, txport);
+ }
+
+ return 0;
+}
+
+static void ub960_init_rx_port_ub960(struct ub960_data *priv,
+ struct ub960_rxport *rxport)
+{
+ unsigned int nport = rxport->nport;
+ u32 bc_freq_val;
+
+ /*
+ * Back channel frequency select.
+ * Override FREQ_SELECT from the strap.
+ * 0 - 2.5 Mbps (DS90UB913A-Q1 / DS90UB933-Q1)
+ * 2 - 10 Mbps
+ * 6 - 50 Mbps (DS90UB953-Q1)
+ *
+ * Note that changing this setting will result in some errors on the back
+ * channel for a short period of time.
+ */
+
+ switch (rxport->rx_mode) {
+ case RXPORT_MODE_RAW10:
+ case RXPORT_MODE_RAW12_HF:
+ case RXPORT_MODE_RAW12_LF:
+ bc_freq_val = 0;
+ break;
+
+ case RXPORT_MODE_CSI2_ASYNC:
+ bc_freq_val = 2;
+ break;
+
+ case RXPORT_MODE_CSI2_SYNC:
+ bc_freq_val = 6;
+ break;
+
+ default:
+ return;
+ }
+
+ ub960_rxport_update_bits(priv, nport, UB960_RR_BCC_CONFIG,
+ UB960_RR_BCC_CONFIG_BC_FREQ_SEL_MASK,
+ bc_freq_val);
+
+ switch (rxport->rx_mode) {
+ case RXPORT_MODE_RAW10:
+ /* FPD3_MODE = RAW10 Mode (DS90UB913A-Q1 / DS90UB933-Q1 compatible) */
+ ub960_rxport_update_bits(priv, nport, UB960_RR_PORT_CONFIG,
+ UB960_RR_PORT_CONFIG_FPD3_MODE_MASK,
+ 0x3);
+
+ /*
+ * RAW10_8BIT_CTL = 0b10 : 8-bit processing using upper 8 bits
+ */
+ ub960_rxport_update_bits(priv, nport, UB960_RR_PORT_CONFIG2,
+ UB960_RR_PORT_CONFIG2_RAW10_8BIT_CTL_MASK,
+ 0x2 << UB960_RR_PORT_CONFIG2_RAW10_8BIT_CTL_SHIFT);
+
+ break;
+
+ case RXPORT_MODE_RAW12_HF:
+ case RXPORT_MODE_RAW12_LF:
+ /* Not implemented */
+ return;
+
+ case RXPORT_MODE_CSI2_SYNC:
+ case RXPORT_MODE_CSI2_ASYNC:
+ /* CSI-2 Mode (DS90UB953-Q1 compatible) */
+ ub960_rxport_update_bits(priv, nport, UB960_RR_PORT_CONFIG, 0x3,
+ 0x0);
+
+ break;
+ }
+
+ /* LV_POLARITY & FV_POLARITY */
+ ub960_rxport_update_bits(priv, nport, UB960_RR_PORT_CONFIG2, 0x3,
+ rxport->lv_fv_pol);
+
+ /* Enable all interrupt sources from this port */
+ ub960_rxport_write(priv, nport, UB960_RR_PORT_ICR_HI, 0x07);
+ ub960_rxport_write(priv, nport, UB960_RR_PORT_ICR_LO, 0x7f);
+
+ /* Enable I2C_PASS_THROUGH */
+ ub960_rxport_update_bits(priv, nport, UB960_RR_BCC_CONFIG,
+ UB960_RR_BCC_CONFIG_I2C_PASS_THROUGH,
+ UB960_RR_BCC_CONFIG_I2C_PASS_THROUGH);
+
+ /* Enable I2C communication to the serializer via the alias addr */
+ ub960_rxport_write(priv, nport, UB960_RR_SER_ALIAS_ID,
+ rxport->ser.alias << 1);
+
+ /* Configure EQ related settings */
+ ub960_rxport_config_eq(priv, nport);
+
+ /* Enable RX port */
+ ub960_update_bits(priv, UB960_SR_RX_PORT_CTL, BIT(nport), BIT(nport));
+}
+
+static void ub960_init_rx_port_ub9702_fpd3(struct ub960_data *priv,
+ struct ub960_rxport *rxport)
+{
+ unsigned int nport = rxport->nport;
+ u8 bc_freq_val;
+ u8 fpd_func_mode;
+
+ switch (rxport->rx_mode) {
+ case RXPORT_MODE_RAW10:
+ bc_freq_val = 0;
+ fpd_func_mode = 5;
+ break;
+
+ case RXPORT_MODE_RAW12_HF:
+ bc_freq_val = 0;
+ fpd_func_mode = 4;
+ break;
+
+ case RXPORT_MODE_RAW12_LF:
+ bc_freq_val = 0;
+ fpd_func_mode = 6;
+ break;
+
+ case RXPORT_MODE_CSI2_SYNC:
+ bc_freq_val = 6;
+ fpd_func_mode = 2;
+ break;
+
+ case RXPORT_MODE_CSI2_ASYNC:
+ bc_freq_val = 2;
+ fpd_func_mode = 2;
+ break;
+
+ default:
+ return;
+ }
+
+ ub960_rxport_update_bits(priv, nport, UB960_RR_BCC_CONFIG, 0x7,
+ bc_freq_val);
+ ub960_rxport_write(priv, nport, UB960_RR_CHANNEL_MODE, fpd_func_mode);
+
+ /* set serdes_eq_mode = 1 */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0xa8, 0x80);
+
+ /* enable serdes driver */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x0d, 0x7f);
+
+ /* set serdes_eq_offset=4 */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x2b, 0x04);
+
+ /* init default serdes_eq_max in 0xa9 */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0xa9, 0x23);
+
+ /* init serdes_eq_min in 0xaa */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0xaa, 0);
+
+ /* serdes_driver_ctl2 control: DS90UB953-Q1/DS90UB933-Q1/DS90UB913A-Q1 */
+ ub960_ind_update_bits(priv, UB960_IND_TARGET_RX_ANA(nport), 0x1b,
+ BIT(3), BIT(3));
+
+ /* RX port to half-rate */
+ ub960_update_bits(priv, UB960_SR_FPD_RATE_CFG, 0x3 << (nport * 2),
+ BIT(nport * 2));
+}
+
+static void ub960_init_rx_port_ub9702_fpd4_aeq(struct ub960_data *priv,
+ struct ub960_rxport *rxport)
+{
+ unsigned int nport = rxport->nport;
+ bool first_time_power_up = true;
+
+ if (first_time_power_up) {
+ u8 v;
+
+ /* AEQ init */
+ ub960_read_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x2c, &v);
+
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x27, v);
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x28, v + 1);
+
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x2b, 0x00);
+ }
+
+ /* enable serdes_eq_ctl2 */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x9e, 0x00);
+
+ /* enable serdes_eq_ctl1 */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x90, 0x40);
+
+ /* enable serdes_eq_en */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x2e, 0x40);
+
+ /* disable serdes_eq_override */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0xf0, 0x00);
+
+ /* disable serdes_gain_override */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x71, 0x00);
+}
+
+static void ub960_init_rx_port_ub9702_fpd4(struct ub960_data *priv,
+ struct ub960_rxport *rxport)
+{
+ unsigned int nport = rxport->nport;
+ u8 bc_freq_val;
+
+ switch (rxport->rx_mode) {
+ case RXPORT_MODE_RAW10:
+ bc_freq_val = 0;
+ break;
+
+ case RXPORT_MODE_RAW12_HF:
+ bc_freq_val = 0;
+ break;
+
+ case RXPORT_MODE_RAW12_LF:
+ bc_freq_val = 0;
+ break;
+
+ case RXPORT_MODE_CSI2_SYNC:
+ bc_freq_val = 6;
+ break;
+
+ case RXPORT_MODE_CSI2_ASYNC:
+ bc_freq_val = 2;
+ break;
+
+ default:
+ return;
+ }
+
+ ub960_rxport_update_bits(priv, nport, UB960_RR_BCC_CONFIG, 0x7,
+ bc_freq_val);
+
+ /* FPD4 Sync Mode */
+ ub960_rxport_write(priv, nport, UB960_RR_CHANNEL_MODE, 0);
+
+ /* add serdes_eq_offset of 4 */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x2b, 0x04);
+
+ /* FPD4 serdes_start_eq in 0x27: assign default */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x27, 0x0);
+ /* FPD4 serdes_end_eq in 0x28: assign default */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x28, 0x23);
+
+ /* set serdes_driver_mode into FPD IV mode */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x04, 0x00);
+ /* set FPD PBC drv into FPD IV mode */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x1b, 0x00);
+
+ /* set serdes_system_init to 0x2f */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x21, 0x2f);
+ /* set serdes_system_rst in reset mode */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x25, 0xc1);
+
+ /* RX port to 7.55G mode */
+ ub960_update_bits(priv, UB960_SR_FPD_RATE_CFG, 0x3 << (nport * 2),
+ 0 << (nport * 2));
+
+ ub960_init_rx_port_ub9702_fpd4_aeq(priv, rxport);
+}
+
+static void ub960_init_rx_port_ub9702(struct ub960_data *priv,
+ struct ub960_rxport *rxport)
+{
+ unsigned int nport = rxport->nport;
+
+ if (rxport->cdr_mode == RXPORT_CDR_FPD3)
+ ub960_init_rx_port_ub9702_fpd3(priv, rxport);
+ else /* RXPORT_CDR_FPD4 */
+ ub960_init_rx_port_ub9702_fpd4(priv, rxport);
+
+ switch (rxport->rx_mode) {
+ case RXPORT_MODE_RAW10:
+ /*
+ * RAW10_8BIT_CTL = 0b11 : 8-bit processing using lower 8 bits
+ * 0b10 : 8-bit processing using upper 8 bits
+ */
+ ub960_rxport_update_bits(priv, nport, UB960_RR_PORT_CONFIG2,
+ 0x3 << 6, 0x2 << 6);
+
+ break;
+
+ case RXPORT_MODE_RAW12_HF:
+ case RXPORT_MODE_RAW12_LF:
+ /* Not implemented */
+ return;
+
+ case RXPORT_MODE_CSI2_SYNC:
+ case RXPORT_MODE_CSI2_ASYNC:
+
+ break;
+ }
+
+ /* LV_POLARITY & FV_POLARITY */
+ ub960_rxport_update_bits(priv, nport, UB960_RR_PORT_CONFIG2, 0x3,
+ rxport->lv_fv_pol);
+
+ /* Enable all interrupt sources from this port */
+ ub960_rxport_write(priv, nport, UB960_RR_PORT_ICR_HI, 0x07);
+ ub960_rxport_write(priv, nport, UB960_RR_PORT_ICR_LO, 0x7f);
+
+ /* Enable I2C_PASS_THROUGH */
+ ub960_rxport_update_bits(priv, nport, UB960_RR_BCC_CONFIG,
+ UB960_RR_BCC_CONFIG_I2C_PASS_THROUGH,
+ UB960_RR_BCC_CONFIG_I2C_PASS_THROUGH);
+
+ /* Enable I2C communication to the serializer via the alias addr */
+ ub960_rxport_write(priv, nport, UB960_RR_SER_ALIAS_ID,
+ rxport->ser.alias << 1);
+
+ /* Enable RX port */
+ ub960_update_bits(priv, UB960_SR_RX_PORT_CTL, BIT(nport), BIT(nport));
+
+ if (rxport->cdr_mode == RXPORT_CDR_FPD4) {
+ /* unreset 960 AEQ */
+ ub960_write_ind(priv, UB960_IND_TARGET_RX_ANA(nport), 0x25, 0x41);
+ }
+}
+
+static int ub960_init_rx_ports(struct ub960_data *priv)
+{
+ unsigned int nport;
+
+ for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ struct ub960_rxport *rxport = priv->rxports[nport];
+
+ if (!rxport)
+ continue;
+
+ if (priv->hw_data->is_ub9702)
+ ub960_init_rx_port_ub9702(priv, rxport);
+ else
+ ub960_init_rx_port_ub960(priv, rxport);
+ }
+
+ return 0;
+}
+
+static void ub960_rxport_handle_events(struct ub960_data *priv, u8 nport)
+{
+ struct device *dev = &priv->client->dev;
+ u8 rx_port_sts1;
+ u8 rx_port_sts2;
+ u8 csi_rx_sts;
+ u8 bcc_sts;
+ int ret = 0;
+
+ /* Read interrupts (also clears most of them) */
+ if (!ret)
+ ret = ub960_rxport_read(priv, nport, UB960_RR_RX_PORT_STS1,
+ &rx_port_sts1);
+ if (!ret)
+ ret = ub960_rxport_read(priv, nport, UB960_RR_RX_PORT_STS2,
+ &rx_port_sts2);
+ if (!ret)
+ ret = ub960_rxport_read(priv, nport, UB960_RR_CSI_RX_STS,
+ &csi_rx_sts);
+ if (!ret)
+ ret = ub960_rxport_read(priv, nport, UB960_RR_BCC_STATUS,
+ &bcc_sts);
+
+ if (ret)
+ return;
+
+ if (rx_port_sts1 & UB960_RR_RX_PORT_STS1_PARITY_ERROR) {
+ u16 v;
+
+ ret = ub960_rxport_read16(priv, nport, UB960_RR_RX_PAR_ERR_HI,
+ &v);
+ if (!ret)
+ dev_err(dev, "rx%u parity errors: %u\n", nport, v);
+ }
+
+ if (rx_port_sts1 & UB960_RR_RX_PORT_STS1_BCC_CRC_ERROR)
+ dev_err(dev, "rx%u BCC CRC error\n", nport);
+
+ if (rx_port_sts1 & UB960_RR_RX_PORT_STS1_BCC_SEQ_ERROR)
+ dev_err(dev, "rx%u BCC SEQ error\n", nport);
+
+ if (rx_port_sts2 & UB960_RR_RX_PORT_STS2_LINE_LEN_UNSTABLE)
+ dev_err(dev, "rx%u line length unstable\n", nport);
+
+ if (rx_port_sts2 & UB960_RR_RX_PORT_STS2_FPD3_ENCODE_ERROR)
+ dev_err(dev, "rx%u FPD3 encode error\n", nport);
+
+ if (rx_port_sts2 & UB960_RR_RX_PORT_STS2_BUFFER_ERROR)
+ dev_err(dev, "rx%u buffer error\n", nport);
+
+ if (csi_rx_sts)
+ dev_err(dev, "rx%u CSI error: %#02x\n", nport, csi_rx_sts);
+
+ if (csi_rx_sts & UB960_RR_CSI_RX_STS_ECC1_ERR)
+ dev_err(dev, "rx%u CSI ECC1 error\n", nport);
+
+ if (csi_rx_sts & UB960_RR_CSI_RX_STS_ECC2_ERR)
+ dev_err(dev, "rx%u CSI ECC2 error\n", nport);
+
+ if (csi_rx_sts & UB960_RR_CSI_RX_STS_CKSUM_ERR)
+ dev_err(dev, "rx%u CSI checksum error\n", nport);
+
+ if (csi_rx_sts & UB960_RR_CSI_RX_STS_LENGTH_ERR)
+ dev_err(dev, "rx%u CSI length error\n", nport);
+
+ if (bcc_sts)
+ dev_err(dev, "rx%u BCC error: %#02x\n", nport, bcc_sts);
+
+ if (bcc_sts & UB960_RR_BCC_STATUS_RESP_ERR)
+ dev_err(dev, "rx%u BCC response error", nport);
+
+ if (bcc_sts & UB960_RR_BCC_STATUS_SLAVE_TO)
+ dev_err(dev, "rx%u BCC slave timeout", nport);
+
+ if (bcc_sts & UB960_RR_BCC_STATUS_SLAVE_ERR)
+ dev_err(dev, "rx%u BCC slave error", nport);
+
+ if (bcc_sts & UB960_RR_BCC_STATUS_MASTER_TO)
+ dev_err(dev, "rx%u BCC master timeout", nport);
+
+ if (bcc_sts & UB960_RR_BCC_STATUS_MASTER_ERR)
+ dev_err(dev, "rx%u BCC master error", nport);
+
+ if (bcc_sts & UB960_RR_BCC_STATUS_SEQ_ERROR)
+ dev_err(dev, "rx%u BCC sequence error", nport);
+
+ if (rx_port_sts2 & UB960_RR_RX_PORT_STS2_LINE_LEN_CHG) {
+ u16 v;
+
+ ret = ub960_rxport_read16(priv, nport, UB960_RR_LINE_LEN_1, &v);
+ if (!ret)
+ dev_dbg(dev, "rx%u line len changed: %u\n", nport, v);
+ }
+
+ if (rx_port_sts2 & UB960_RR_RX_PORT_STS2_LINE_CNT_CHG) {
+ u16 v;
+
+ ret = ub960_rxport_read16(priv, nport, UB960_RR_LINE_COUNT_HI,
+ &v);
+ if (!ret)
+ dev_dbg(dev, "rx%u line count changed: %u\n", nport, v);
+ }
+
+ if (rx_port_sts1 & UB960_RR_RX_PORT_STS1_LOCK_STS_CHG) {
+ dev_dbg(dev, "rx%u: %s, %s, %s, %s\n", nport,
+ (rx_port_sts1 & UB960_RR_RX_PORT_STS1_LOCK_STS) ?
+ "locked" :
+ "unlocked",
+ (rx_port_sts1 & UB960_RR_RX_PORT_STS1_PORT_PASS) ?
+ "passed" :
+ "not passed",
+ (rx_port_sts2 & UB960_RR_RX_PORT_STS2_CABLE_FAULT) ?
+ "no clock" :
+ "clock ok",
+ (rx_port_sts2 & UB960_RR_RX_PORT_STS2_FREQ_STABLE) ?
+ "stable freq" :
+ "unstable freq");
+ }
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2
+ */
+
+/*
+ * The current implementation only supports a simple VC mapping, where all VCs
+ * from a one RX port will be mapped to the same VC. Also, the hardware
+ * dictates that all streams from an RX port must go to a single TX port.
+ *
+ * This function decides the target VC numbers for each RX port with a simple
+ * algorithm, so that for each TX port, we get VC numbers starting from 0,
+ * and counting up.
+ *
+ * E.g. if all four RX ports are in use, of which the first two go to the
+ * first TX port and the secont two go to the second TX port, we would get
+ * the following VCs for the four RX ports: 0, 1, 0, 1.
+ *
+ * TODO: implement a more sophisticated VC mapping. As the driver cannot know
+ * what VCs the sinks expect (say, an FPGA with hardcoded VC routing), this
+ * probably needs to be somehow configurable. Device tree?
+ */
+static void ub960_get_vc_maps(struct ub960_data *priv,
+ struct v4l2_subdev_state *state, u8 *vc)
+{
+ u8 cur_vc[UB960_MAX_TX_NPORTS] = {};
+ struct v4l2_subdev_route *route;
+ u8 handled_mask = 0;
+
+ for_each_active_route(&state->routing, route) {
+ unsigned int rx, tx;
+
+ rx = ub960_pad_to_port(priv, route->sink_pad);
+ if (BIT(rx) & handled_mask)
+ continue;
+
+ tx = ub960_pad_to_port(priv, route->source_pad);
+
+ vc[rx] = cur_vc[tx]++;
+ handled_mask |= BIT(rx);
+ }
+}
+
+static int ub960_enable_tx_port(struct ub960_data *priv, unsigned int nport)
+{
+ struct device *dev = &priv->client->dev;
+
+ dev_dbg(dev, "enable TX port %u\n", nport);
+
+ return ub960_txport_update_bits(priv, nport, UB960_TR_CSI_CTL,
+ UB960_TR_CSI_CTL_CSI_ENABLE,
+ UB960_TR_CSI_CTL_CSI_ENABLE);
+}
+
+static void ub960_disable_tx_port(struct ub960_data *priv, unsigned int nport)
+{
+ struct device *dev = &priv->client->dev;
+
+ dev_dbg(dev, "disable TX port %u\n", nport);
+
+ ub960_txport_update_bits(priv, nport, UB960_TR_CSI_CTL,
+ UB960_TR_CSI_CTL_CSI_ENABLE, 0);
+}
+
+static int ub960_enable_rx_port(struct ub960_data *priv, unsigned int nport)
+{
+ struct device *dev = &priv->client->dev;
+
+ dev_dbg(dev, "enable RX port %u\n", nport);
+
+ /* Enable forwarding */
+ return ub960_update_bits(priv, UB960_SR_FWD_CTL1, BIT(4 + nport), 0);
+}
+
+static void ub960_disable_rx_port(struct ub960_data *priv, unsigned int nport)
+{
+ struct device *dev = &priv->client->dev;
+
+ dev_dbg(dev, "disable RX port %u\n", nport);
+
+ /* Disable forwarding */
+ ub960_update_bits(priv, UB960_SR_FWD_CTL1, BIT(4 + nport),
+ BIT(4 + nport));
+}
+
+/*
+ * The driver only supports using a single VC for each source. This function
+ * checks that each source only provides streams using a single VC.
+ */
+static int ub960_validate_stream_vcs(struct ub960_data *priv)
+{
+ unsigned int nport;
+ unsigned int i;
+
+ for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ struct ub960_rxport *rxport = priv->rxports[nport];
+ struct v4l2_mbus_frame_desc desc;
+ int ret;
+ u8 cur_vc;
+
+ if (!rxport)
+ continue;
+
+ ret = v4l2_subdev_call(rxport->source.sd, pad, get_frame_desc,
+ rxport->source.pad, &desc);
+ if (ret)
+ return ret;
+
+ if (desc.type != V4L2_MBUS_FRAME_DESC_TYPE_CSI2)
+ continue;
+
+ for (i = 0; i < desc.num_entries; ++i) {
+ u8 vc = desc.entry[i].bus.csi2.vc;
+
+ if (i == 0) {
+ cur_vc = vc;
+ continue;
+ }
+
+ if (vc == cur_vc)
+ continue;
+
+ dev_err(&priv->client->dev,
+ "rx%u: source with multiple virtual-channels is not supported\n",
+ nport);
+ return -ENODEV;
+ }
+ }
+
+ return 0;
+}
+
+static int ub960_configure_ports_for_streaming(struct ub960_data *priv,
+ struct v4l2_subdev_state *state)
+{
+ u8 fwd_ctl;
+ struct {
+ u32 num_streams;
+ u8 pixel_dt;
+ u8 meta_dt;
+ u32 meta_lines;
+ u32 tx_port;
+ } rx_data[UB960_MAX_RX_NPORTS] = {};
+ u8 vc_map[UB960_MAX_RX_NPORTS] = {};
+ struct v4l2_subdev_route *route;
+ unsigned int nport;
+ int ret;
+
+ ret = ub960_validate_stream_vcs(priv);
+ if (ret)
+ return ret;
+
+ ub960_get_vc_maps(priv, state, vc_map);
+
+ for_each_active_route(&state->routing, route) {
+ struct ub960_rxport *rxport;
+ struct ub960_txport *txport;
+ struct v4l2_mbus_framefmt *fmt;
+ const struct ub960_format_info *ub960_fmt;
+ unsigned int nport;
+
+ nport = ub960_pad_to_port(priv, route->sink_pad);
+
+ rxport = priv->rxports[nport];
+ if (!rxport)
+ return -EINVAL;
+
+ txport = priv->txports[ub960_pad_to_port(priv, route->source_pad)];
+ if (!txport)
+ return -EINVAL;
+
+ rx_data[nport].tx_port = ub960_pad_to_port(priv, route->source_pad);
+
+ rx_data[nport].num_streams++;
+
+ /* For the rest, we are only interested in parallel busses */
+ if (rxport->rx_mode == RXPORT_MODE_CSI2_SYNC ||
+ rxport->rx_mode == RXPORT_MODE_CSI2_ASYNC)
+ continue;
+
+ if (rx_data[nport].num_streams > 2)
+ return -EPIPE;
+
+ fmt = v4l2_subdev_state_get_stream_format(state,
+ route->sink_pad,
+ route->sink_stream);
+ if (!fmt)
+ return -EPIPE;
+
+ ub960_fmt = ub960_find_format(fmt->code);
+ if (!ub960_fmt)
+ return -EPIPE;
+
+ if (ub960_fmt->meta) {
+ if (fmt->height > 3) {
+ dev_err(&priv->client->dev,
+ "rx%u: unsupported metadata height %u\n",
+ nport, fmt->height);
+ return -EPIPE;
+ }
+
+ rx_data[nport].meta_dt = ub960_fmt->datatype;
+ rx_data[nport].meta_lines = fmt->height;
+ } else {
+ rx_data[nport].pixel_dt = ub960_fmt->datatype;
+ }
+ }
+
+ /* Configure RX ports */
+
+ fwd_ctl = 0;
+
+ for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ struct ub960_rxport *rxport = priv->rxports[nport];
+ u8 vc = vc_map[nport];
+
+ if (rx_data[nport].num_streams == 0)
+ continue;
+
+ switch (rxport->rx_mode) {
+ case RXPORT_MODE_RAW10:
+ ub960_rxport_write(priv, nport, UB960_RR_RAW10_ID,
+ rx_data[nport].pixel_dt | (vc << UB960_RR_RAW10_ID_VC_SHIFT));
+
+ ub960_rxport_write(priv, rxport->nport,
+ UB960_RR_RAW_EMBED_DTYPE,
+ (rx_data[nport].meta_lines << UB960_RR_RAW_EMBED_DTYPE_LINES_SHIFT) |
+ rx_data[nport].meta_dt);
+
+ break;
+
+ case RXPORT_MODE_RAW12_HF:
+ case RXPORT_MODE_RAW12_LF:
+ /* Not implemented */
+ break;
+
+ case RXPORT_MODE_CSI2_SYNC:
+ case RXPORT_MODE_CSI2_ASYNC:
+ if (!priv->hw_data->is_ub9702) {
+ /* Map all VCs from this port to the same VC */
+ ub960_rxport_write(priv, nport, UB960_RR_CSI_VC_MAP,
+ (vc << UB960_RR_CSI_VC_MAP_SHIFT(3)) |
+ (vc << UB960_RR_CSI_VC_MAP_SHIFT(2)) |
+ (vc << UB960_RR_CSI_VC_MAP_SHIFT(1)) |
+ (vc << UB960_RR_CSI_VC_MAP_SHIFT(0)));
+ } else {
+ unsigned int i;
+
+ /* Map all VCs from this port to VC(nport) */
+ for (i = 0; i < 8; ++i)
+ ub960_rxport_write(priv, nport,
+ UB960_RR_VC_ID_MAP(i),
+ nport);
+ }
+
+ break;
+ }
+
+ /* Forwarding */
+
+ fwd_ctl |= BIT(4 + nport); /* forward disable */
+
+ if (rx_data[nport].tx_port == 1)
+ fwd_ctl |= BIT(nport); /* forward to TX1 */
+ else
+ fwd_ctl &= ~BIT(nport); /* forward to TX0 */
+ }
+
+ ub960_write(priv, UB960_SR_FWD_CTL1, fwd_ctl);
+
+ return 0;
+}
+
+static void ub960_update_streaming_status(struct ub960_data *priv)
+{
+ unsigned int i;
+
+ for (i = 0; i < UB960_MAX_NPORTS; ++i) {
+ if (priv->stream_enable_mask[i])
+ break;
+ }
+
+ priv->streaming = i < UB960_MAX_NPORTS;
+}
+
+static int ub960_enable_streams(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state, u32 source_pad,
+ u64 source_streams_mask)
+{
+ struct ub960_data *priv = sd_to_ub960(sd);
+ struct device *dev = &priv->client->dev;
+ u64 sink_streams[UB960_MAX_RX_NPORTS] = {};
+ struct v4l2_subdev_route *route;
+ unsigned int failed_port;
+ unsigned int nport;
+ int ret;
+
+ if (!priv->streaming) {
+ dev_dbg(dev, "Prepare for streaming\n");
+ ret = ub960_configure_ports_for_streaming(priv, state);
+ if (ret)
+ return ret;
+ }
+
+ /* Enable TX port if not yet enabled */
+ if (!priv->stream_enable_mask[source_pad]) {
+ ret = ub960_enable_tx_port(priv,
+ ub960_pad_to_port(priv, source_pad));
+ if (ret)
+ return ret;
+ }
+
+ priv->stream_enable_mask[source_pad] |= source_streams_mask;
+
+ /* Collect sink streams per pad which we need to enable */
+ for_each_active_route(&state->routing, route) {
+ if (route->source_pad != source_pad)
+ continue;
+
+ if (!(source_streams_mask & BIT_ULL(route->source_stream)))
+ continue;
+
+ nport = ub960_pad_to_port(priv, route->sink_pad);
+
+ sink_streams[nport] |= BIT_ULL(route->sink_stream);
+ }
+
+ for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ if (!sink_streams[nport])
+ continue;
+
+ /* Enable the RX port if not yet enabled */
+ if (!priv->stream_enable_mask[nport]) {
+ ret = ub960_enable_rx_port(priv, nport);
+ if (ret) {
+ failed_port = nport;
+ goto err;
+ }
+ }
+
+ priv->stream_enable_mask[nport] |= sink_streams[nport];
+
+ dev_dbg(dev, "enable RX port %u streams %#llx\n", nport,
+ sink_streams[nport]);
+
+ ret = v4l2_subdev_enable_streams(
+ priv->rxports[nport]->source.sd,
+ priv->rxports[nport]->source.pad,
+ sink_streams[nport]);
+ if (ret) {
+ priv->stream_enable_mask[nport] &= ~sink_streams[nport];
+
+ if (!priv->stream_enable_mask[nport])
+ ub960_disable_rx_port(priv, nport);
+
+ failed_port = nport;
+ goto err;
+ }
+ }
+
+ priv->streaming = true;
+
+ return 0;
+
+err:
+ for (nport = 0; nport < failed_port; ++nport) {
+ if (!sink_streams[nport])
+ continue;
+
+ dev_dbg(dev, "disable RX port %u streams %#llx\n", nport,
+ sink_streams[nport]);
+
+ ret = v4l2_subdev_disable_streams(
+ priv->rxports[nport]->source.sd,
+ priv->rxports[nport]->source.pad,
+ sink_streams[nport]);
+ if (ret)
+ dev_err(dev, "Failed to disable streams: %d\n", ret);
+
+ priv->stream_enable_mask[nport] &= ~sink_streams[nport];
+
+ /* Disable RX port if no active streams */
+ if (!priv->stream_enable_mask[nport])
+ ub960_disable_rx_port(priv, nport);
+ }
+
+ priv->stream_enable_mask[source_pad] &= ~source_streams_mask;
+
+ if (!priv->stream_enable_mask[source_pad])
+ ub960_disable_tx_port(priv,
+ ub960_pad_to_port(priv, source_pad));
+
+ ub960_update_streaming_status(priv);
+
+ return ret;
+}
+
+static int ub960_disable_streams(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ u32 source_pad, u64 source_streams_mask)
+{
+ struct ub960_data *priv = sd_to_ub960(sd);
+ struct device *dev = &priv->client->dev;
+ u64 sink_streams[UB960_MAX_RX_NPORTS] = {};
+ struct v4l2_subdev_route *route;
+ unsigned int nport;
+ int ret;
+
+ /* Collect sink streams per pad which we need to disable */
+ for_each_active_route(&state->routing, route) {
+ if (route->source_pad != source_pad)
+ continue;
+
+ if (!(source_streams_mask & BIT_ULL(route->source_stream)))
+ continue;
+
+ nport = ub960_pad_to_port(priv, route->sink_pad);
+
+ sink_streams[nport] |= BIT_ULL(route->sink_stream);
+ }
+
+ for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ if (!sink_streams[nport])
+ continue;
+
+ dev_dbg(dev, "disable RX port %u streams %#llx\n", nport,
+ sink_streams[nport]);
+
+ ret = v4l2_subdev_disable_streams(
+ priv->rxports[nport]->source.sd,
+ priv->rxports[nport]->source.pad,
+ sink_streams[nport]);
+ if (ret)
+ dev_err(dev, "Failed to disable streams: %d\n", ret);
+
+ priv->stream_enable_mask[nport] &= ~sink_streams[nport];
+
+ /* Disable RX port if no active streams */
+ if (!priv->stream_enable_mask[nport])
+ ub960_disable_rx_port(priv, nport);
+ }
+
+ /* Disable TX port if no active streams */
+
+ priv->stream_enable_mask[source_pad] &= ~source_streams_mask;
+
+ if (!priv->stream_enable_mask[source_pad])
+ ub960_disable_tx_port(priv,
+ ub960_pad_to_port(priv, source_pad));
+
+ ub960_update_streaming_status(priv);
+
+ return 0;
+}
+
+static int _ub960_set_routing(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ struct v4l2_subdev_krouting *routing)
+{
+ static const struct v4l2_mbus_framefmt format = {
+ .width = 640,
+ .height = 480,
+ .code = MEDIA_BUS_FMT_UYVY8_1X16,
+ .field = V4L2_FIELD_NONE,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .ycbcr_enc = V4L2_YCBCR_ENC_601,
+ .quantization = V4L2_QUANTIZATION_LIM_RANGE,
+ .xfer_func = V4L2_XFER_FUNC_SRGB,
+ };
+ int ret;
+
+ /*
+ * Note: we can only support up to V4L2_FRAME_DESC_ENTRY_MAX, until
+ * frame desc is made dynamically allocated.
+ */
+
+ if (routing->num_routes > V4L2_FRAME_DESC_ENTRY_MAX)
+ return -E2BIG;
+
+ ret = v4l2_subdev_routing_validate(sd, routing,
+ V4L2_SUBDEV_ROUTING_ONLY_1_TO_1 |
+ V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX);
+ if (ret)
+ return ret;
+
+ ret = v4l2_subdev_set_routing_with_fmt(sd, state, routing, &format);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int ub960_set_routing(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ enum v4l2_subdev_format_whence which,
+ struct v4l2_subdev_krouting *routing)
+{
+ struct ub960_data *priv = sd_to_ub960(sd);
+
+ if (which == V4L2_SUBDEV_FORMAT_ACTIVE && priv->streaming)
+ return -EBUSY;
+
+ return _ub960_set_routing(sd, state, routing);
+}
+
+static int ub960_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
+ struct v4l2_mbus_frame_desc *fd)
+{
+ struct ub960_data *priv = sd_to_ub960(sd);
+ struct v4l2_subdev_route *route;
+ struct v4l2_subdev_state *state;
+ int ret = 0;
+ struct device *dev = &priv->client->dev;
+ u8 vc_map[UB960_MAX_RX_NPORTS] = {};
+
+ if (!ub960_pad_is_source(priv, pad))
+ return -EINVAL;
+
+ memset(fd, 0, sizeof(*fd));
+
+ fd->type = V4L2_MBUS_FRAME_DESC_TYPE_CSI2;
+
+ state = v4l2_subdev_lock_and_get_active_state(&priv->sd);
+
+ ub960_get_vc_maps(priv, state, vc_map);
+
+ for_each_active_route(&state->routing, route) {
+ struct v4l2_mbus_frame_desc_entry *source_entry = NULL;
+ struct v4l2_mbus_frame_desc source_fd;
+ unsigned int nport;
+ unsigned int i;
+
+ if (route->source_pad != pad)
+ continue;
+
+ nport = ub960_pad_to_port(priv, route->sink_pad);
+
+ ret = v4l2_subdev_call(priv->rxports[nport]->source.sd, pad,
+ get_frame_desc,
+ priv->rxports[nport]->source.pad,
+ &source_fd);
+ if (ret) {
+ dev_err(dev,
+ "Failed to get source frame desc for pad %u\n",
+ route->sink_pad);
+ goto out_unlock;
+ }
+
+ for (i = 0; i < source_fd.num_entries; ++i) {
+ if (source_fd.entry[i].stream == route->sink_stream) {
+ source_entry = &source_fd.entry[i];
+ break;
+ }
+ }
+
+ if (!source_entry) {
+ dev_err(dev,
+ "Failed to find stream from source frame desc\n");
+ ret = -EPIPE;
+ goto out_unlock;
+ }
+
+ fd->entry[fd->num_entries].stream = route->source_stream;
+ fd->entry[fd->num_entries].flags = source_entry->flags;
+ fd->entry[fd->num_entries].length = source_entry->length;
+ fd->entry[fd->num_entries].pixelcode = source_entry->pixelcode;
+
+ fd->entry[fd->num_entries].bus.csi2.vc = vc_map[nport];
+
+ if (source_fd.type == V4L2_MBUS_FRAME_DESC_TYPE_CSI2) {
+ fd->entry[fd->num_entries].bus.csi2.dt =
+ source_entry->bus.csi2.dt;
+ } else {
+ const struct ub960_format_info *ub960_fmt;
+ struct v4l2_mbus_framefmt *fmt;
+
+ fmt = v4l2_subdev_state_get_stream_format(state, pad,
+ route->source_stream);
+
+ if (!fmt) {
+ ret = -EINVAL;
+ goto out_unlock;
+ }
+
+ ub960_fmt = ub960_find_format(fmt->code);
+ if (!ub960_fmt) {
+ dev_err(dev, "Unable to find format\n");
+ ret = -EINVAL;
+ goto out_unlock;
+ }
+
+ fd->entry[fd->num_entries].bus.csi2.dt =
+ ub960_fmt->datatype;
+ }
+
+ fd->num_entries++;
+ }
+
+out_unlock:
+ v4l2_subdev_unlock_state(state);
+
+ return ret;
+}
+
+static int ub960_set_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ struct v4l2_subdev_format *format)
+{
+ struct ub960_data *priv = sd_to_ub960(sd);
+ struct v4l2_mbus_framefmt *fmt;
+
+ if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE && priv->streaming)
+ return -EBUSY;
+
+ /* No transcoding, source and sink formats must match. */
+ if (ub960_pad_is_source(priv, format->pad))
+ return v4l2_subdev_get_fmt(sd, state, format);
+
+ /*
+ * Default to the first format if the requested media bus code isn't
+ * supported.
+ */
+ if (!ub960_find_format(format->format.code))
+ format->format.code = ub960_formats[0].code;
+
+ fmt = v4l2_subdev_state_get_stream_format(state, format->pad,
+ format->stream);
+ if (!fmt)
+ return -EINVAL;
+
+ *fmt = format->format;
+
+ fmt = v4l2_subdev_state_get_opposite_stream_format(state, format->pad,
+ format->stream);
+ if (!fmt)
+ return -EINVAL;
+
+ *fmt = format->format;
+
+ return 0;
+}
+
+static int ub960_init_cfg(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state)
+{
+ struct ub960_data *priv = sd_to_ub960(sd);
+
+ struct v4l2_subdev_route routes[] = {
+ {
+ .sink_pad = 0,
+ .sink_stream = 0,
+ .source_pad = priv->hw_data->num_rxports,
+ .source_stream = 0,
+ .flags = V4L2_SUBDEV_ROUTE_FL_ACTIVE,
+ },
+ };
+
+ struct v4l2_subdev_krouting routing = {
+ .num_routes = ARRAY_SIZE(routes),
+ .routes = routes,
+ };
+
+ return _ub960_set_routing(sd, state, &routing);
+}
+
+static const struct v4l2_subdev_pad_ops ub960_pad_ops = {
+ .enable_streams = ub960_enable_streams,
+ .disable_streams = ub960_disable_streams,
+
+ .set_routing = ub960_set_routing,
+ .get_frame_desc = ub960_get_frame_desc,
+
+ .get_fmt = v4l2_subdev_get_fmt,
+ .set_fmt = ub960_set_fmt,
+
+ .init_cfg = ub960_init_cfg,
+};
+
+static int ub960_log_status(struct v4l2_subdev *sd)
+{
+ struct ub960_data *priv = sd_to_ub960(sd);
+ struct device *dev = &priv->client->dev;
+ struct v4l2_subdev_state *state;
+ unsigned int nport;
+ unsigned int i;
+ u16 v16 = 0;
+ u8 v = 0;
+ u8 id[7];
+
+ state = v4l2_subdev_lock_and_get_active_state(sd);
+
+ for (i = 0; i < 6; ++i)
+ ub960_read(priv, UB960_SR_FPD3_RX_ID(i), &id[i]);
+ id[6] = 0;
+
+ dev_info(dev, "ID '%s'\n", id);
+
+ for (nport = 0; nport < priv->hw_data->num_txports; ++nport) {
+ struct ub960_txport *txport = priv->txports[nport];
+
+ dev_info(dev, "TX %u\n", nport);
+
+ if (!txport) {
+ dev_info(dev, "\tNot initialized\n");
+ continue;
+ }
+
+ ub960_txport_read(priv, nport, UB960_TR_CSI_STS, &v);
+ dev_info(dev, "\tsync %u, pass %u\n", v & (u8)BIT(1),
+ v & (u8)BIT(0));
+
+ ub960_read16(priv, UB960_SR_CSI_FRAME_COUNT_HI(nport), &v16);
+ dev_info(dev, "\tframe counter %u\n", v16);
+
+ ub960_read16(priv, UB960_SR_CSI_FRAME_ERR_COUNT_HI(nport), &v16);
+ dev_info(dev, "\tframe error counter %u\n", v16);
+
+ ub960_read16(priv, UB960_SR_CSI_LINE_COUNT_HI(nport), &v16);
+ dev_info(dev, "\tline counter %u\n", v16);
+
+ ub960_read16(priv, UB960_SR_CSI_LINE_ERR_COUNT_HI(nport), &v16);
+ dev_info(dev, "\tline error counter %u\n", v16);
+ }
+
+ for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ struct ub960_rxport *rxport = priv->rxports[nport];
+ u8 eq_level;
+ s8 strobe_pos;
+ unsigned int i;
+
+ dev_info(dev, "RX %u\n", nport);
+
+ if (!rxport) {
+ dev_info(dev, "\tNot initialized\n");
+ continue;
+ }
+
+ ub960_rxport_read(priv, nport, UB960_RR_RX_PORT_STS1, &v);
+
+ if (v & UB960_RR_RX_PORT_STS1_LOCK_STS)
+ dev_info(dev, "\tLocked\n");
+ else
+ dev_info(dev, "\tNot locked\n");
+
+ dev_info(dev, "\trx_port_sts1 %#02x\n", v);
+ ub960_rxport_read(priv, nport, UB960_RR_RX_PORT_STS2, &v);
+ dev_info(dev, "\trx_port_sts2 %#02x\n", v);
+
+ ub960_rxport_read16(priv, nport, UB960_RR_RX_FREQ_HIGH, &v16);
+ dev_info(dev, "\tlink freq %llu Hz\n", (v16 * 1000000ULL) >> 8);
+
+ ub960_rxport_read16(priv, nport, UB960_RR_RX_PAR_ERR_HI, &v16);
+ dev_info(dev, "\tparity errors %u\n", v16);
+
+ ub960_rxport_read16(priv, nport, UB960_RR_LINE_COUNT_HI, &v16);
+ dev_info(dev, "\tlines per frame %u\n", v16);
+
+ ub960_rxport_read16(priv, nport, UB960_RR_LINE_LEN_1, &v16);
+ dev_info(dev, "\tbytes per line %u\n", v16);
+
+ ub960_rxport_read(priv, nport, UB960_RR_CSI_ERR_COUNTER, &v);
+ dev_info(dev, "\tcsi_err_counter %u\n", v);
+
+ /* Strobe */
+
+ ub960_read(priv, UB960_XR_AEQ_CTL1, &v);
+
+ dev_info(dev, "\t%s strobe\n",
+ (v & UB960_XR_AEQ_CTL1_AEQ_SFILTER_EN) ? "Adaptive" :
+ "Manual");
+
+ if (v & UB960_XR_AEQ_CTL1_AEQ_SFILTER_EN) {
+ ub960_read(priv, UB960_XR_SFILTER_CFG, &v);
+
+ dev_info(dev, "\tStrobe range [%d, %d]\n",
+ ((v >> UB960_XR_SFILTER_CFG_SFILTER_MIN_SHIFT) & 0xf) - 7,
+ ((v >> UB960_XR_SFILTER_CFG_SFILTER_MAX_SHIFT) & 0xf) - 7);
+ }
+
+ ub960_rxport_get_strobe_pos(priv, nport, &strobe_pos);
+
+ dev_info(dev, "\tStrobe pos %d\n", strobe_pos);
+
+ /* EQ */
+
+ ub960_rxport_read(priv, nport, UB960_RR_AEQ_BYPASS, &v);
+
+ dev_info(dev, "\t%s EQ\n",
+ (v & UB960_RR_AEQ_BYPASS_ENABLE) ? "Manual" :
+ "Adaptive");
+
+ if (!(v & UB960_RR_AEQ_BYPASS_ENABLE)) {
+ ub960_rxport_read(priv, nport, UB960_RR_AEQ_MIN_MAX, &v);
+
+ dev_info(dev, "\tEQ range [%u, %u]\n",
+ (v >> UB960_RR_AEQ_MIN_MAX_AEQ_FLOOR_SHIFT) & 0xf,
+ (v >> UB960_RR_AEQ_MIN_MAX_AEQ_MAX_SHIFT) & 0xf);
+ }
+
+ if (ub960_rxport_get_eq_level(priv, nport, &eq_level) == 0)
+ dev_info(dev, "\tEQ level %u\n", eq_level);
+
+ /* GPIOs */
+ for (i = 0; i < UB960_NUM_BC_GPIOS; ++i) {
+ u8 ctl_reg;
+ u8 ctl_shift;
+
+ ctl_reg = UB960_RR_BC_GPIO_CTL(i / 2);
+ ctl_shift = (i % 2) * 4;
+
+ ub960_rxport_read(priv, nport, ctl_reg, &v);
+
+ dev_info(dev, "\tGPIO%u: mode %u\n", i,
+ (v >> ctl_shift) & 0xf);
+ }
+ }
+
+ v4l2_subdev_unlock_state(state);
+
+ return 0;
+}
+
+static const struct v4l2_subdev_core_ops ub960_subdev_core_ops = {
+ .log_status = ub960_log_status,
+ .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
+ .unsubscribe_event = v4l2_event_subdev_unsubscribe,
+};
+
+static const struct v4l2_subdev_ops ub960_subdev_ops = {
+ .core = &ub960_subdev_core_ops,
+ .pad = &ub960_pad_ops,
+};
+
+static const struct media_entity_operations ub960_entity_ops = {
+ .get_fwnode_pad = v4l2_subdev_get_fwnode_pad_1_to_1,
+ .link_validate = v4l2_subdev_link_validate,
+ .has_pad_interdep = v4l2_subdev_has_pad_interdep,
+};
+
+/* -----------------------------------------------------------------------------
+ * Core
+ */
+
+static irqreturn_t ub960_handle_events(int irq, void *arg)
+{
+ struct ub960_data *priv = arg;
+ unsigned int i;
+ u8 int_sts;
+ u8 fwd_sts;
+ int ret;
+
+ ret = ub960_read(priv, UB960_SR_INTERRUPT_STS, &int_sts);
+ if (ret || !int_sts)
+ return IRQ_NONE;
+
+ dev_dbg(&priv->client->dev, "INTERRUPT_STS %x\n", int_sts);
+
+ ret = ub960_read(priv, UB960_SR_FWD_STS, &fwd_sts);
+ if (ret)
+ return IRQ_NONE;
+
+ dev_dbg(&priv->client->dev, "FWD_STS %#02x\n", fwd_sts);
+
+ for (i = 0; i < priv->hw_data->num_txports; ++i) {
+ if (int_sts & UB960_SR_INTERRUPT_STS_IS_CSI_TX(i))
+ ub960_csi_handle_events(priv, i);
+ }
+
+ for (i = 0; i < priv->hw_data->num_rxports; ++i) {
+ if (!priv->rxports[i])
+ continue;
+
+ if (int_sts & UB960_SR_INTERRUPT_STS_IS_RX(i))
+ ub960_rxport_handle_events(priv, i);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static void ub960_handler_work(struct work_struct *work)
+{
+ struct delayed_work *dwork = to_delayed_work(work);
+ struct ub960_data *priv =
+ container_of(dwork, struct ub960_data, poll_work);
+
+ ub960_handle_events(0, priv);
+
+ schedule_delayed_work(&priv->poll_work,
+ msecs_to_jiffies(UB960_POLL_TIME_MS));
+}
+
+static void ub960_txport_free_ports(struct ub960_data *priv)
+{
+ unsigned int nport;
+
+ for (nport = 0; nport < priv->hw_data->num_txports; ++nport) {
+ struct ub960_txport *txport = priv->txports[nport];
+
+ if (!txport)
+ continue;
+
+ kfree(txport);
+ priv->txports[nport] = NULL;
+ }
+}
+
+static void ub960_rxport_free_ports(struct ub960_data *priv)
+{
+ unsigned int nport;
+
+ for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ struct ub960_rxport *rxport = priv->rxports[nport];
+
+ if (!rxport)
+ continue;
+
+ fwnode_handle_put(rxport->source.ep_fwnode);
+ fwnode_handle_put(rxport->ser.fwnode);
+
+ kfree(rxport);
+ priv->rxports[nport] = NULL;
+ }
+}
+
+static int ub960_parse_dt_base(struct ub960_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ size_t table_size;
+ unsigned int i;
+ u16 *aliases;
+ int ret;
+
+ ret = fwnode_property_count_u16(dev_fwnode(dev), "i2c-alias-pool");
+ if (ret < 0) {
+ dev_err(dev, "Failed to count 'i2c-alias-pool' property: %d\n",
+ ret);
+ return ret;
+ }
+
+ table_size = ret;
+ priv->atr.num_aliases = ret;
+
+ if (!table_size)
+ return 0;
+
+ priv->atr.aliases = devm_kcalloc(dev, table_size,
+ sizeof(struct atr_alias_table_entry),
+ GFP_KERNEL);
+ if (!priv->atr.aliases)
+ return -ENOMEM;
+
+ aliases = kcalloc(table_size, sizeof(u16), GFP_KERNEL);
+ if (!aliases)
+ return -ENOMEM;
+
+ ret = fwnode_property_read_u16_array(dev_fwnode(dev), "i2c-alias-pool",
+ aliases, table_size);
+ if (ret < 0) {
+ dev_err(dev, "Failed to read 'i2c-alias-pool' property: %d\n",
+ ret);
+ kfree(aliases);
+ return ret;
+ }
+
+ for (i = 0; i < table_size; ++i)
+ priv->atr.aliases[i].alias_id = aliases[i];
+
+ kfree(aliases);
+
+ dev_dbg(dev, "i2c-alias-pool has %zu aliases", table_size);
+
+ return 0;
+}
+
+static int
+ub960_parse_dt_rxport_link_properties(struct ub960_data *priv,
+ struct fwnode_handle *link_fwnode,
+ struct ub960_rxport *rxport)
+{
+ struct device *dev = &priv->client->dev;
+ unsigned int nport = rxport->nport;
+ u32 rx_mode;
+ u32 cdr_mode;
+ s32 strobe_pos;
+ u32 eq_level;
+ u32 ser_i2c_alias;
+ int ret;
+
+ cdr_mode = RXPORT_CDR_FPD3;
+
+ ret = fwnode_property_read_u32(link_fwnode, "ti,cdr-mode", &cdr_mode);
+ if (ret < 0 && ret != -EINVAL) {
+ dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
+ "ti,cdr-mode", ret);
+ return ret;
+ }
+
+ if (cdr_mode > RXPORT_CDR_LAST) {
+ dev_err(dev, "rx%u: bad 'ti,cdr-mode' %u\n", nport, cdr_mode);
+ return -EINVAL;
+ }
+
+ if (!priv->hw_data->is_fpdlink4 && cdr_mode == RXPORT_CDR_FPD4) {
+ dev_err(dev, "rx%u: FPD-Link 4 CDR not supported\n", nport);
+ return -EINVAL;
+ }
+
+ rxport->cdr_mode = cdr_mode;
+
+ ret = fwnode_property_read_u32(link_fwnode, "ti,rx-mode", &rx_mode);
+ if (ret < 0) {
+ dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
+ "ti,rx-mode", ret);
+ return ret;
+ }
+
+ if (rx_mode > RXPORT_MODE_LAST) {
+ dev_err(dev, "rx%u: bad 'ti,rx-mode' %u\n", nport, rx_mode);
+ return -EINVAL;
+ }
+
+ switch (rx_mode) {
+ case RXPORT_MODE_RAW12_HF:
+ case RXPORT_MODE_RAW12_LF:
+ case RXPORT_MODE_CSI2_ASYNC:
+ dev_err(dev, "rx%u: unsupported 'ti,rx-mode' %u\n", nport,
+ rx_mode);
+ return -EINVAL;
+ default:
+ break;
+ }
+
+ rxport->rx_mode = rx_mode;
+
+ /* EQ & Strobe related */
+
+ /* Defaults */
+ rxport->eq.manual_eq = false;
+ rxport->eq.aeq.eq_level_min = UB960_MIN_EQ_LEVEL;
+ rxport->eq.aeq.eq_level_max = UB960_MAX_EQ_LEVEL;
+
+ ret = fwnode_property_read_u32(link_fwnode, "ti,strobe-pos",
+ &strobe_pos);
+ if (ret) {
+ if (ret != -EINVAL) {
+ dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
+ "ti,strobe-pos", ret);
+ return ret;
+ }
+ } else if (strobe_pos < UB960_MIN_MANUAL_STROBE_POS ||
+ strobe_pos > UB960_MAX_MANUAL_STROBE_POS) {
+ dev_err(dev, "rx%u: illegal 'strobe-pos' value: %d\n", nport,
+ strobe_pos);
+ } else {
+ /* NOTE: ignored unless global manual strobe pos is set */
+ rxport->eq.strobe_pos = strobe_pos;
+ if (!priv->strobe.manual)
+ dev_warn(dev,
+ "rx%u: 'ti,strobe-pos' ignored as 'ti,manual-strobe' not set\n",
+ nport);
+ }
+
+ ret = fwnode_property_read_u32(link_fwnode, "ti,eq-level", &eq_level);
+ if (ret) {
+ if (ret != -EINVAL) {
+ dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
+ "ti,eq-level", ret);
+ return ret;
+ }
+ } else if (eq_level > UB960_MAX_EQ_LEVEL) {
+ dev_err(dev, "rx%u: illegal 'ti,eq-level' value: %d\n", nport,
+ eq_level);
+ } else {
+ rxport->eq.manual_eq = true;
+ rxport->eq.manual.eq_level = eq_level;
+ }
+
+ ret = fwnode_property_read_u32(link_fwnode, "i2c-alias",
+ &ser_i2c_alias);
+ if (ret) {
+ dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
+ "i2c-alias", ret);
+ return ret;
+ }
+ rxport->ser.alias = ser_i2c_alias;
+
+ rxport->ser.fwnode = fwnode_get_named_child_node(link_fwnode, "serializer");
+ if (!rxport->ser.fwnode) {
+ dev_err(dev, "rx%u: missing 'serializer' node\n", nport);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int ub960_parse_dt_rxport_ep_properties(struct ub960_data *priv,
+ struct fwnode_handle *ep_fwnode,
+ struct ub960_rxport *rxport)
+{
+ struct device *dev = &priv->client->dev;
+ struct v4l2_fwnode_endpoint vep = {};
+ unsigned int nport = rxport->nport;
+ bool hsync_hi;
+ bool vsync_hi;
+ int ret;
+
+ rxport->source.ep_fwnode = fwnode_graph_get_remote_endpoint(ep_fwnode);
+ if (!rxport->source.ep_fwnode) {
+ dev_err(dev, "rx%u: no remote endpoint\n", nport);
+ return -ENODEV;
+ }
+
+ /* We currently have properties only for RAW modes */
+
+ switch (rxport->rx_mode) {
+ case RXPORT_MODE_RAW10:
+ case RXPORT_MODE_RAW12_HF:
+ case RXPORT_MODE_RAW12_LF:
+ break;
+ default:
+ return 0;
+ }
+
+ vep.bus_type = V4L2_MBUS_PARALLEL;
+ ret = v4l2_fwnode_endpoint_parse(ep_fwnode, &vep);
+ if (ret) {
+ dev_err(dev, "rx%u: failed to parse endpoint data\n", nport);
+ goto err_put_source_ep_fwnode;
+ }
+
+ hsync_hi = !!(vep.bus.parallel.flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH);
+ vsync_hi = !!(vep.bus.parallel.flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH);
+
+ /* LineValid and FrameValid are inverse to the h/vsync active */
+ rxport->lv_fv_pol = (hsync_hi ? UB960_RR_PORT_CONFIG2_LV_POL_LOW : 0) |
+ (vsync_hi ? UB960_RR_PORT_CONFIG2_FV_POL_LOW : 0);
+
+ return 0;
+
+err_put_source_ep_fwnode:
+ fwnode_handle_put(rxport->source.ep_fwnode);
+ return ret;
+}
+
+static int ub960_parse_dt_rxport(struct ub960_data *priv, unsigned int nport,
+ struct fwnode_handle *link_fwnode,
+ struct fwnode_handle *ep_fwnode)
+{
+ static const char *vpoc_names[UB960_MAX_RX_NPORTS] = { "vpoc0", "vpoc1",
+ "vpoc2", "vpoc3" };
+ struct device *dev = &priv->client->dev;
+ struct ub960_rxport *rxport;
+ int ret;
+
+ rxport = kzalloc(sizeof(*rxport), GFP_KERNEL);
+ if (!rxport)
+ return -ENOMEM;
+
+ priv->rxports[nport] = rxport;
+
+ rxport->nport = nport;
+ rxport->priv = priv;
+
+ ret = ub960_parse_dt_rxport_link_properties(priv, link_fwnode, rxport);
+ if (ret)
+ goto err_free_rxport;
+
+ rxport->vpoc = devm_regulator_get_optional(dev, vpoc_names[nport]);
+ if (IS_ERR(rxport->vpoc)) {
+ ret = PTR_ERR(rxport->vpoc);
+ if (ret == -ENODEV) {
+ rxport->vpoc = NULL;
+ } else {
+ dev_err(dev, "rx%u: failed to get VPOC supply: %d\n",
+ nport, ret);
+ goto err_put_remote_fwnode;
+ }
+ }
+
+ ret = ub960_parse_dt_rxport_ep_properties(priv, ep_fwnode, rxport);
+ if (ret)
+ goto err_put_remote_fwnode;
+
+ return 0;
+
+err_put_remote_fwnode:
+ fwnode_handle_put(rxport->ser.fwnode);
+err_free_rxport:
+ priv->rxports[nport] = NULL;
+ kfree(rxport);
+ return ret;
+}
+
+static struct fwnode_handle *
+ub960_fwnode_get_link_by_regs(struct fwnode_handle *links_fwnode,
+ unsigned int nport)
+{
+ struct fwnode_handle *link_fwnode;
+ int ret;
+
+ fwnode_for_each_child_node(links_fwnode, link_fwnode) {
+ u32 link_num;
+
+ if (!str_has_prefix(fwnode_get_name(link_fwnode), "link@"))
+ continue;
+
+ ret = fwnode_property_read_u32(link_fwnode, "reg", &link_num);
+ if (ret) {
+ fwnode_handle_put(link_fwnode);
+ return NULL;
+ }
+
+ if (nport == link_num)
+ return link_fwnode;
+ }
+
+ return NULL;
+}
+
+static int ub960_parse_dt_rxports(struct ub960_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ struct fwnode_handle *links_fwnode;
+ unsigned int nport;
+ int ret;
+
+ links_fwnode = fwnode_get_named_child_node(dev_fwnode(dev), "links");
+ if (!links_fwnode) {
+ dev_err(dev, "'links' node missing\n");
+ return -ENODEV;
+ }
+
+ /* Defaults, recommended by TI */
+ priv->strobe.min = 2;
+ priv->strobe.max = 3;
+
+ priv->strobe.manual = fwnode_property_read_bool(links_fwnode, "ti,manual-strobe");
+
+ for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ struct fwnode_handle *link_fwnode;
+ struct fwnode_handle *ep_fwnode;
+
+ link_fwnode = ub960_fwnode_get_link_by_regs(links_fwnode, nport);
+ if (!link_fwnode)
+ continue;
+
+ ep_fwnode = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev),
+ nport, 0, 0);
+ if (!ep_fwnode) {
+ fwnode_handle_put(link_fwnode);
+ continue;
+ }
+
+ ret = ub960_parse_dt_rxport(priv, nport, link_fwnode,
+ ep_fwnode);
+
+ fwnode_handle_put(link_fwnode);
+ fwnode_handle_put(ep_fwnode);
+
+ if (ret) {
+ dev_err(dev, "rx%u: failed to parse RX port\n", nport);
+ goto err_put_links;
+ }
+ }
+
+ fwnode_handle_put(links_fwnode);
+
+ return 0;
+
+err_put_links:
+ fwnode_handle_put(links_fwnode);
+
+ return ret;
+}
+
+static int ub960_parse_dt_txports(struct ub960_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ u32 nport;
+ int ret;
+
+ for (nport = 0; nport < priv->hw_data->num_txports; ++nport) {
+ unsigned int port = nport + priv->hw_data->num_rxports;
+ struct fwnode_handle *ep_fwnode;
+
+ ep_fwnode = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev),
+ port, 0, 0);
+ if (!ep_fwnode)
+ continue;
+
+ ret = ub960_parse_dt_txport(priv, ep_fwnode, nport);
+
+ fwnode_handle_put(ep_fwnode);
+
+ if (ret)
+ break;
+ }
+
+ return 0;
+}
+
+static int ub960_parse_dt(struct ub960_data *priv)
+{
+ int ret;
+
+ ret = ub960_parse_dt_base(priv);
+ if (ret)
+ return ret;
+
+ ret = ub960_parse_dt_rxports(priv);
+ if (ret)
+ return ret;
+
+ ret = ub960_parse_dt_txports(priv);
+ if (ret)
+ goto err_free_rxports;
+
+ return 0;
+
+err_free_rxports:
+ ub960_rxport_free_ports(priv);
+
+ return ret;
+}
+
+static int ub960_notify_bound(struct v4l2_async_notifier *notifier,
+ struct v4l2_subdev *subdev,
+ struct v4l2_async_subdev *asd)
+{
+ struct ub960_data *priv = sd_to_ub960(notifier->sd);
+ struct ub960_rxport *rxport = to_ub960_asd(asd)->rxport;
+ struct device *dev = &priv->client->dev;
+ u8 nport = rxport->nport;
+ unsigned int i;
+ int ret;
+
+ ret = media_entity_get_fwnode_pad(&subdev->entity,
+ rxport->source.ep_fwnode,
+ MEDIA_PAD_FL_SOURCE);
+ if (ret < 0) {
+ dev_err(dev, "Failed to find pad for %s\n", subdev->name);
+ return ret;
+ }
+
+ rxport->source.sd = subdev;
+ rxport->source.pad = ret;
+
+ ret = media_create_pad_link(&rxport->source.sd->entity,
+ rxport->source.pad, &priv->sd.entity, nport,
+ MEDIA_LNK_FL_ENABLED |
+ MEDIA_LNK_FL_IMMUTABLE);
+ if (ret) {
+ dev_err(dev, "Unable to link %s:%u -> %s:%u\n",
+ rxport->source.sd->name, rxport->source.pad,
+ priv->sd.name, nport);
+ return ret;
+ }
+
+ for (i = 0; i < priv->hw_data->num_rxports; ++i) {
+ if (priv->rxports[i] && !priv->rxports[i]->source.sd) {
+ dev_dbg(dev, "Waiting for more subdevs to be bound\n");
+ return 0;
+ }
+ }
+
+ return 0;
+}
+
+static void ub960_notify_unbind(struct v4l2_async_notifier *notifier,
+ struct v4l2_subdev *subdev,
+ struct v4l2_async_subdev *asd)
+{
+ struct ub960_rxport *rxport = to_ub960_asd(asd)->rxport;
+
+ rxport->source.sd = NULL;
+}
+
+static const struct v4l2_async_notifier_operations ub960_notify_ops = {
+ .bound = ub960_notify_bound,
+ .unbind = ub960_notify_unbind,
+};
+
+static int ub960_v4l2_notifier_register(struct ub960_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ unsigned int i;
+ int ret;
+
+ v4l2_async_nf_init(&priv->notifier);
+
+ for (i = 0; i < priv->hw_data->num_rxports; ++i) {
+ struct ub960_rxport *rxport = priv->rxports[i];
+ struct ub960_asd *asd;
+
+ if (!rxport)
+ continue;
+
+ asd = v4l2_async_nf_add_fwnode(&priv->notifier,
+ rxport->source.ep_fwnode,
+ struct ub960_asd);
+ if (IS_ERR(asd)) {
+ dev_err(dev, "Failed to add subdev for source %u: %pe",
+ i, asd);
+ v4l2_async_nf_cleanup(&priv->notifier);
+ return PTR_ERR(asd);
+ }
+
+ asd->rxport = rxport;
+ }
+
+ priv->notifier.ops = &ub960_notify_ops;
+
+ ret = v4l2_async_subdev_nf_register(&priv->sd, &priv->notifier);
+ if (ret) {
+ dev_err(dev, "Failed to register subdev_notifier");
+ v4l2_async_nf_cleanup(&priv->notifier);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void ub960_v4l2_notifier_unregister(struct ub960_data *priv)
+{
+ v4l2_async_nf_unregister(&priv->notifier);
+ v4l2_async_nf_cleanup(&priv->notifier);
+}
+
+static int ub960_create_subdev(struct ub960_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ unsigned int i;
+ int ret;
+
+ v4l2_i2c_subdev_init(&priv->sd, priv->client, &ub960_subdev_ops);
+
+ v4l2_ctrl_handler_init(&priv->ctrl_handler, 1);
+ priv->sd.ctrl_handler = &priv->ctrl_handler;
+
+ v4l2_ctrl_new_int_menu(&priv->ctrl_handler, NULL, V4L2_CID_LINK_FREQ,
+ ARRAY_SIZE(priv->tx_link_freq) - 1, 0,
+ priv->tx_link_freq);
+
+ if (priv->ctrl_handler.error) {
+ ret = priv->ctrl_handler.error;
+ goto err_free_ctrl;
+ }
+
+ priv->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
+ V4L2_SUBDEV_FL_HAS_EVENTS | V4L2_SUBDEV_FL_STREAMS;
+ priv->sd.entity.function = MEDIA_ENT_F_VID_IF_BRIDGE;
+ priv->sd.entity.ops = &ub960_entity_ops;
+
+ for (i = 0; i < priv->hw_data->num_rxports + priv->hw_data->num_txports; ++i) {
+ priv->pads[i].flags = ub960_pad_is_sink(priv, i) ?
+ MEDIA_PAD_FL_SINK :
+ MEDIA_PAD_FL_SOURCE;
+ }
+
+ ret = media_entity_pads_init(&priv->sd.entity,
+ priv->hw_data->num_rxports +
+ priv->hw_data->num_txports,
+ priv->pads);
+ if (ret)
+ goto err_free_ctrl;
+
+ priv->sd.state_lock = priv->sd.ctrl_handler->lock;
+
+ ret = v4l2_subdev_init_finalize(&priv->sd);
+ if (ret)
+ goto err_entity_cleanup;
+
+ ret = ub960_v4l2_notifier_register(priv);
+ if (ret) {
+ dev_err(dev, "v4l2 subdev notifier register failed: %d\n", ret);
+ goto err_subdev_cleanup;
+ }
+
+ ret = v4l2_async_register_subdev(&priv->sd);
+ if (ret) {
+ dev_err(dev, "v4l2_async_register_subdev error: %d\n", ret);
+ goto err_unreg_notif;
+ }
+
+ return 0;
+
+err_unreg_notif:
+ ub960_v4l2_notifier_unregister(priv);
+err_subdev_cleanup:
+ v4l2_subdev_cleanup(&priv->sd);
+err_entity_cleanup:
+ media_entity_cleanup(&priv->sd.entity);
+err_free_ctrl:
+ v4l2_ctrl_handler_free(&priv->ctrl_handler);
+
+ return ret;
+}
+
+static void ub960_destroy_subdev(struct ub960_data *priv)
+{
+ ub960_v4l2_notifier_unregister(priv);
+ v4l2_async_unregister_subdev(&priv->sd);
+
+ v4l2_subdev_cleanup(&priv->sd);
+
+ media_entity_cleanup(&priv->sd.entity);
+ v4l2_ctrl_handler_free(&priv->ctrl_handler);
+}
+
+static const struct regmap_config ub960_regmap_config = {
+ .name = "ds90ub960",
+
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .max_register = 0xff,
+
+ /*
+ * We do locking in the driver to cover the TX/RX port selection and the
+ * indirect register access.
+ */
+ .disable_locking = true,
+};
+
+static void ub960_reset(struct ub960_data *priv, bool reset_regs)
+{
+ struct device *dev = &priv->client->dev;
+ unsigned int v;
+ int ret;
+ u8 bit;
+
+ bit = reset_regs ? UB960_SR_RESET_DIGITAL_RESET1 :
+ UB960_SR_RESET_DIGITAL_RESET0;
+
+ ub960_write(priv, UB960_SR_RESET, bit);
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = regmap_read_poll_timeout(priv->regmap, UB960_SR_RESET, v,
+ (v & bit) == 0, 2000, 100000);
+
+ mutex_unlock(&priv->reg_lock);
+
+ if (ret)
+ dev_err(dev, "reset failed: %d\n", ret);
+}
+
+static int ub960_get_hw_resources(struct ub960_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+
+ priv->regmap = devm_regmap_init_i2c(priv->client, &ub960_regmap_config);
+ if (IS_ERR(priv->regmap))
+ return PTR_ERR(priv->regmap);
+
+ priv->vddio = devm_regulator_get(dev, "vddio");
+ if (IS_ERR(priv->vddio))
+ return dev_err_probe(dev, PTR_ERR(priv->vddio),
+ "cannot get VDDIO regulator\n");
+
+ /* get power-down pin from DT */
+ priv->pd_gpio =
+ devm_gpiod_get_optional(dev, "powerdown", GPIOD_OUT_HIGH);
+ if (IS_ERR(priv->pd_gpio))
+ return dev_err_probe(dev, PTR_ERR(priv->pd_gpio),
+ "Cannot get powerdown GPIO\n");
+
+ priv->refclk = devm_clk_get(dev, "refclk");
+ if (IS_ERR(priv->refclk))
+ return dev_err_probe(dev, PTR_ERR(priv->refclk),
+ "Cannot get REFCLK\n");
+
+ return 0;
+}
+
+static int ub960_enable_core_hw(struct ub960_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ u8 rev_mask;
+ int ret;
+ u8 dev_sts;
+ u8 refclk_freq;
+
+ ret = regulator_enable(priv->vddio);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "failed to enable VDDIO regulator\n");
+
+ ret = clk_prepare_enable(priv->refclk);
+ if (ret) {
+ dev_err_probe(dev, ret, "Failed to enable refclk\n");
+ goto err_disable_vddio;
+ }
+
+ if (priv->pd_gpio) {
+ gpiod_set_value_cansleep(priv->pd_gpio, 1);
+ /* wait min 2 ms for reset to complete */
+ fsleep(2000);
+ gpiod_set_value_cansleep(priv->pd_gpio, 0);
+ /* wait min 2 ms for power up to finish */
+ fsleep(2000);
+ }
+
+ ub960_reset(priv, true);
+
+ /* Runtime check register accessibility */
+ ret = ub960_read(priv, UB960_SR_REV_MASK, &rev_mask);
+ if (ret) {
+ dev_err_probe(dev, ret, "Cannot read first register, abort\n");
+ goto err_pd_gpio;
+ }
+
+ dev_dbg(dev, "Found %s (rev/mask %#04x)\n", priv->hw_data->model,
+ rev_mask);
+
+ ret = ub960_read(priv, UB960_SR_DEVICE_STS, &dev_sts);
+ if (ret)
+ goto err_pd_gpio;
+
+ ret = ub960_read(priv, UB960_XR_REFCLK_FREQ, &refclk_freq);
+ if (ret)
+ goto err_pd_gpio;
+
+ dev_dbg(dev, "refclk valid %u freq %u MHz (clk fw freq %lu MHz)\n",
+ !!(dev_sts & BIT(4)), refclk_freq,
+ clk_get_rate(priv->refclk) / 1000000);
+
+ /* Disable all RX ports by default */
+ ret = ub960_write(priv, UB960_SR_RX_PORT_CTL, 0);
+ if (ret)
+ goto err_pd_gpio;
+
+ /* release GPIO lock */
+ if (priv->hw_data->is_ub9702) {
+ ret = ub960_update_bits(priv, UB960_SR_RESET,
+ UB960_SR_RESET_GPIO_LOCK_RELEASE,
+ UB960_SR_RESET_GPIO_LOCK_RELEASE);
+ if (ret)
+ goto err_pd_gpio;
+ }
+
+ return 0;
+
+err_pd_gpio:
+ gpiod_set_value_cansleep(priv->pd_gpio, 1);
+ clk_disable_unprepare(priv->refclk);
+err_disable_vddio:
+ regulator_disable(priv->vddio);
+
+ return ret;
+}
+
+static void ub960_disable_core_hw(struct ub960_data *priv)
+{
+ gpiod_set_value_cansleep(priv->pd_gpio, 1);
+ clk_disable_unprepare(priv->refclk);
+ regulator_disable(priv->vddio);
+}
+
+static int ub960_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct ub960_data *priv;
+ unsigned int port_lock_mask;
+ unsigned int port_mask;
+ unsigned int nport;
+ int ret;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->client = client;
+
+ priv->hw_data = device_get_match_data(dev);
+
+ mutex_init(&priv->reg_lock);
+ mutex_init(&priv->atr.lock);
+
+ INIT_DELAYED_WORK(&priv->poll_work, ub960_handler_work);
+
+ /*
+ * Initialize these to invalid values so that the first reg writes will
+ * configure the target.
+ */
+ priv->reg_current.indirect_target = 0xff;
+ priv->reg_current.rxport = 0xff;
+ priv->reg_current.txport = 0xff;
+
+ ret = ub960_get_hw_resources(priv);
+ if (ret)
+ goto err_mutex_destroy;
+
+ ret = ub960_enable_core_hw(priv);
+ if (ret)
+ goto err_mutex_destroy;
+
+ ret = ub960_parse_dt(priv);
+ if (ret)
+ goto err_disable_core_hw;
+
+ ret = ub960_init_tx_ports(priv);
+ if (ret)
+ goto err_free_ports;
+
+ ret = ub960_rxport_enable_vpocs(priv);
+ if (ret)
+ goto err_free_ports;
+
+ ret = ub960_init_rx_ports(priv);
+ if (ret)
+ goto err_disable_vpocs;
+
+ ub960_reset(priv, false);
+
+ port_mask = 0;
+
+ for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
+ struct ub960_rxport *rxport = priv->rxports[nport];
+
+ if (!rxport)
+ continue;
+
+ port_mask |= BIT(nport);
+ }
+
+ ret = ub960_rxport_wait_locks(priv, port_mask, &port_lock_mask);
+ if (ret)
+ goto err_disable_vpocs;
+
+ if (port_mask != port_lock_mask) {
+ ret = -EIO;
+ dev_err_probe(dev, ret, "Failed to lock all RX ports\n");
+ goto err_disable_vpocs;
+ }
+
+ /*
+ * Clear any errors caused by switching the RX port settings while
+ * probing.
+ */
+ ub960_clear_rx_errors(priv);
+
+ ret = ub960_init_atr(priv);
+ if (ret)
+ goto err_disable_vpocs;
+
+ ret = ub960_rxport_add_serializers(priv);
+ if (ret)
+ goto err_uninit_atr;
+
+ ret = ub960_create_subdev(priv);
+ if (ret)
+ goto err_free_sers;
+
+ if (client->irq)
+ dev_warn(dev, "irq support not implemented, using polling\n");
+
+ schedule_delayed_work(&priv->poll_work,
+ msecs_to_jiffies(UB960_POLL_TIME_MS));
+
+ return 0;
+
+err_free_sers:
+ ub960_rxport_remove_serializers(priv);
+err_uninit_atr:
+ ub960_uninit_atr(priv);
+err_disable_vpocs:
+ ub960_rxport_disable_vpocs(priv);
+err_free_ports:
+ ub960_rxport_free_ports(priv);
+ ub960_txport_free_ports(priv);
+err_disable_core_hw:
+ ub960_disable_core_hw(priv);
+err_mutex_destroy:
+ mutex_destroy(&priv->atr.lock);
+ mutex_destroy(&priv->reg_lock);
+ return ret;
+}
+
+static void ub960_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct ub960_data *priv = sd_to_ub960(sd);
+
+ cancel_delayed_work_sync(&priv->poll_work);
+
+ ub960_destroy_subdev(priv);
+ ub960_rxport_remove_serializers(priv);
+ ub960_uninit_atr(priv);
+ ub960_rxport_disable_vpocs(priv);
+ ub960_rxport_free_ports(priv);
+ ub960_txport_free_ports(priv);
+ ub960_disable_core_hw(priv);
+ mutex_destroy(&priv->atr.lock);
+ mutex_destroy(&priv->reg_lock);
+}
+
+static const struct ub960_hw_data ds90ub960_hw = {
+ .model = "ub960",
+ .num_rxports = 4,
+ .num_txports = 2,
+};
+
+static const struct ub960_hw_data ds90ub9702_hw = {
+ .model = "ub9702",
+ .num_rxports = 4,
+ .num_txports = 2,
+ .is_ub9702 = true,
+ .is_fpdlink4 = true,
+};
+
+static const struct i2c_device_id ub960_id[] = {
+ { "ds90ub960-q1", (kernel_ulong_t)&ds90ub960_hw },
+ { "ds90ub9702-q1", (kernel_ulong_t)&ds90ub9702_hw },
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, ub960_id);
+
+static const struct of_device_id ub960_dt_ids[] = {
+ { .compatible = "ti,ds90ub960-q1", .data = &ds90ub960_hw },
+ { .compatible = "ti,ds90ub9702-q1", .data = &ds90ub9702_hw },
+ {}
+};
+MODULE_DEVICE_TABLE(of, ub960_dt_ids);
+
+static struct i2c_driver ds90ub960_driver = {
+ .probe_new = ub960_probe,
+ .remove = ub960_remove,
+ .id_table = ub960_id,
+ .driver = {
+ .name = "ds90ub960",
+ .of_match_table = ub960_dt_ids,
+ },
+};
+module_i2c_driver(ds90ub960_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Texas Instruments FPD-Link III/IV Deserializers Driver");
+MODULE_AUTHOR("Luca Ceresoli <luca@lucaceresoli.net>");
+MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>");
+MODULE_IMPORT_NS(I2C_ATR);
diff --git a/include/media/i2c/ds90ub9xx.h b/include/media/i2c/ds90ub9xx.h
new file mode 100644
index 000000000000..0245198469ec
--- /dev/null
+++ b/include/media/i2c/ds90ub9xx.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __MEDIA_I2C_DS90UB9XX_H__
+#define __MEDIA_I2C_DS90UB9XX_H__
+
+#include <linux/types.h>
+
+struct i2c_atr;
+
+/**
+ * struct ds90ub9xx_platform_data - platform data for FPD-Link Serializers.
+ * @port: Deserializer RX port for this Serializer
+ * @atr: I2C ATR
+ * @bc_rate: back-channel clock rate
+ */
+struct ds90ub9xx_platform_data {
+ u32 port;
+ struct i2c_atr *atr;
+ unsigned long bc_rate;
+};
+
+#endif /* __MEDIA_I2C_DS90UB9XX_H__ */
--
2.34.1
^ permalink raw reply related [flat|nested] 16+ messages in thread* [PATCH v9 7/8] media: i2c: add DS90UB913 driver
2023-02-16 14:07 [PATCH v9 0/8] i2c-atr and FPDLink Tomi Valkeinen
` (5 preceding siblings ...)
2023-02-16 14:07 ` [PATCH v9 6/8] media: i2c: add DS90UB960 driver Tomi Valkeinen
@ 2023-02-16 14:07 ` Tomi Valkeinen
2023-02-16 14:07 ` [PATCH v9 8/8] media: i2c: add DS90UB953 driver Tomi Valkeinen
2023-02-16 15:53 ` [PATCH v9 0/8] i2c-atr and FPDLink Andy Shevchenko
8 siblings, 0 replies; 16+ messages in thread
From: Tomi Valkeinen @ 2023-02-16 14:07 UTC (permalink / raw)
To: linux-media, devicetree, linux-kernel, linux-i2c, Rob Herring,
Krzysztof Kozlowski, Wolfram Sang, Luca Ceresoli,
Andy Shevchenko, Matti Vaittinen, Laurent Pinchart
Cc: Mauro Carvalho Chehab, Peter Rosin, Liam Girdwood, Mark Brown,
Sakari Ailus, Michael Tretter, Shawn Tu, Hans Verkuil,
Mike Pagano, Krzysztof Hałasa, Marek Vasut,
Satish Nagireddy, Tomi Valkeinen, Laurent Pinchart
Add driver for TI DS90UB913 FPD-Link III Serializer.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
drivers/media/i2c/Kconfig | 13 +
drivers/media/i2c/Makefile | 1 +
drivers/media/i2c/ds90ub913.c | 906 ++++++++++++++++++++++++++++++++++
3 files changed, 920 insertions(+)
create mode 100644 drivers/media/i2c/ds90ub913.c
diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index dc1c7c80dc1c..e0a1c2a5f3bf 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -1601,6 +1601,19 @@ endmenu
menu "Video serializers and deserializers"
+config VIDEO_DS90UB913
+ tristate "TI DS90UB913 FPD-Link III Serializer"
+ depends on OF && I2C && VIDEO_DEV
+ select I2C_ATR
+ select MEDIA_CONTROLLER
+ select OF_GPIO
+ select REGMAP_I2C
+ select V4L2_FWNODE
+ select VIDEO_V4L2_SUBDEV_API
+ help
+ Device driver for the Texas Instruments DS90UB913
+ FPD-Link III Serializer.
+
config VIDEO_DS90UB960
tristate "TI FPD-Link III/IV Deserializers"
depends on OF && I2C && VIDEO_DEV
diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
index 7701c58b4c03..11bc0bd32c2e 100644
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -29,6 +29,7 @@ obj-$(CONFIG_VIDEO_CS3308) += cs3308.o
obj-$(CONFIG_VIDEO_CS5345) += cs5345.o
obj-$(CONFIG_VIDEO_CS53L32A) += cs53l32a.o
obj-$(CONFIG_VIDEO_CX25840) += cx25840/
+obj-$(CONFIG_VIDEO_DS90UB913) += ds90ub913.o
obj-$(CONFIG_VIDEO_DS90UB960) += ds90ub960.o
obj-$(CONFIG_VIDEO_DW9714) += dw9714.o
obj-$(CONFIG_VIDEO_DW9768) += dw9768.o
diff --git a/drivers/media/i2c/ds90ub913.c b/drivers/media/i2c/ds90ub913.c
new file mode 100644
index 000000000000..f7696bce7c77
--- /dev/null
+++ b/drivers/media/i2c/ds90ub913.c
@@ -0,0 +1,906 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Driver for the Texas Instruments DS90UB913 video serializer
+ *
+ * Based on a driver from Luca Ceresoli <luca@lucaceresoli.net>
+ *
+ * Copyright (c) 2019 Luca Ceresoli <luca@lucaceresoli.net>
+ * Copyright (c) 2023 Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/fwnode.h>
+#include <linux/gpio/driver.h>
+#include <linux/i2c-atr.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+
+#include <media/i2c/ds90ub9xx.h>
+#include <media/v4l2-subdev.h>
+
+#define UB913_PAD_SINK 0
+#define UB913_PAD_SOURCE 1
+
+/*
+ * UB913 has 4 gpios, but gpios 3 and 4 are reserved for external oscillator
+ * mode. Thus we only support 2 gpios for now.
+ */
+#define UB913_NUM_GPIOS 2
+
+#define UB913_REG_RESET_CTL 0x01
+#define UB913_REG_RESET_CTL_DIGITAL_RESET_1 BIT(1)
+#define UB913_REG_RESET_CTL_DIGITAL_RESET_0 BIT(0)
+
+#define UB913_REG_GENERAL_CFG 0x03
+#define UB913_REG_GENERAL_CFG_CRC_ERR_RESET BIT(5)
+#define UB913_REG_GENERAL_CFG_PCLK_RISING BIT(0)
+
+#define UB913_REG_MODE_SEL 0x05
+#define UB913_REG_MODE_SEL_MODE_OVERRIDE BIT(5)
+#define UB913_REG_MODE_SEL_MODE_UP_TO_DATE BIT(4)
+#define UB913_REG_MODE_SEL_MODE_MASK GENMASK(3, 0)
+
+#define UB913_REG_CRC_ERRORS_LSB 0x0a
+#define UB913_REG_CRC_ERRORS_MSB 0x0b
+
+#define UB913_REG_GENERAL_STATUS 0x0c
+
+#define UB913_REG_GPIO_CFG(n) (0x0d + (n))
+#define UB913_REG_GPIO_CFG_ENABLE(n) BIT(0 + (n) * 4)
+#define UB913_REG_GPIO_CFG_DIR_INPUT(n) BIT(1 + (n) * 4)
+#define UB913_REG_GPIO_CFG_REMOTE_EN(n) BIT(2 + (n) * 4)
+#define UB913_REG_GPIO_CFG_OUT_VAL(n) BIT(3 + (n) * 4)
+#define UB913_REG_GPIO_CFG_MASK(n) (0xf << ((n) * 4))
+
+#define UB913_REG_SCL_HIGH_TIME 0x11
+#define UB913_REG_SCL_LOW_TIME 0x12
+
+#define UB913_REG_PLL_OVR 0x35
+
+struct ub913_data {
+ struct i2c_client *client;
+ struct regmap *regmap;
+ struct clk *clkin;
+
+ struct gpio_chip gpio_chip;
+
+ struct v4l2_subdev sd;
+ struct media_pad pads[2];
+
+ struct v4l2_async_notifier notifier;
+
+ struct v4l2_subdev *source_sd;
+ u16 source_sd_pad;
+
+ u64 enabled_source_streams;
+
+ struct clk_hw *clkout_clk_hw;
+
+ struct ds90ub9xx_platform_data *plat_data;
+
+ u32 pclk_polarity;
+};
+
+static inline struct ub913_data *sd_to_ub913(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct ub913_data, sd);
+}
+
+struct ub913_format_info {
+ u32 incode;
+ u32 outcode;
+};
+
+static const struct ub913_format_info ub913_formats[] = {
+ /* Only RAW10 with 8-bit payload is supported at the moment */
+ { .incode = MEDIA_BUS_FMT_YUYV8_2X8, .outcode = MEDIA_BUS_FMT_YUYV8_1X16 },
+ { .incode = MEDIA_BUS_FMT_UYVY8_2X8, .outcode = MEDIA_BUS_FMT_UYVY8_1X16 },
+ { .incode = MEDIA_BUS_FMT_VYUY8_2X8, .outcode = MEDIA_BUS_FMT_VYUY8_1X16 },
+ { .incode = MEDIA_BUS_FMT_YVYU8_2X8, .outcode = MEDIA_BUS_FMT_YVYU8_1X16 },
+};
+
+static const struct ub913_format_info *ub913_find_format(u32 incode)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(ub913_formats); ++i) {
+ if (ub913_formats[i].incode == incode)
+ return &ub913_formats[i];
+ }
+
+ return NULL;
+}
+
+static int ub913_read(const struct ub913_data *priv, u8 reg, u8 *val)
+{
+ unsigned int v;
+ int ret;
+
+ ret = regmap_read(priv->regmap, reg, &v);
+ if (ret < 0) {
+ dev_err(&priv->client->dev,
+ "Cannot read register 0x%02x: %d!\n", reg, ret);
+ return ret;
+ }
+
+ *val = v;
+ return 0;
+}
+
+static int ub913_write(const struct ub913_data *priv, u8 reg, u8 val)
+{
+ int ret;
+
+ ret = regmap_write(priv->regmap, reg, val);
+ if (ret < 0)
+ dev_err(&priv->client->dev,
+ "Cannot write register 0x%02x: %d!\n", reg, ret);
+
+ return ret;
+}
+
+/*
+ * GPIO chip
+ */
+static int ub913_gpio_get_direction(struct gpio_chip *gc, unsigned int offset)
+{
+ return GPIO_LINE_DIRECTION_OUT;
+}
+
+static int ub913_gpio_direction_out(struct gpio_chip *gc, unsigned int offset,
+ int value)
+{
+ struct ub913_data *priv = gpiochip_get_data(gc);
+ unsigned int reg_idx = offset / 2;
+ unsigned int field_idx = offset % 2;
+
+ return regmap_update_bits(priv->regmap, UB913_REG_GPIO_CFG(reg_idx),
+ UB913_REG_GPIO_CFG_MASK(field_idx),
+ UB913_REG_GPIO_CFG_ENABLE(field_idx) |
+ (value ? UB913_REG_GPIO_CFG_OUT_VAL(field_idx) :
+ 0));
+}
+
+static void ub913_gpio_set(struct gpio_chip *gc, unsigned int offset, int value)
+{
+ ub913_gpio_direction_out(gc, offset, value);
+}
+
+static int ub913_gpio_of_xlate(struct gpio_chip *gc,
+ const struct of_phandle_args *gpiospec,
+ u32 *flags)
+{
+ if (flags)
+ *flags = gpiospec->args[1];
+
+ return gpiospec->args[0];
+}
+
+static int ub913_gpiochip_probe(struct ub913_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ struct gpio_chip *gc = &priv->gpio_chip;
+ int ret;
+
+ /* Initialize GPIOs 0 and 1 to local control, tri-state */
+ ub913_write(priv, UB913_REG_GPIO_CFG(0), 0);
+
+ gc->label = dev_name(dev);
+ gc->parent = dev;
+ gc->owner = THIS_MODULE;
+ gc->base = -1;
+ gc->can_sleep = true;
+ gc->ngpio = UB913_NUM_GPIOS;
+ gc->get_direction = ub913_gpio_get_direction;
+ gc->direction_output = ub913_gpio_direction_out;
+ gc->set = ub913_gpio_set;
+ gc->of_xlate = ub913_gpio_of_xlate;
+ gc->of_gpio_n_cells = 2;
+
+ ret = gpiochip_add_data(gc, priv);
+ if (ret) {
+ dev_err(dev, "Failed to add GPIOs: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void ub913_gpiochip_remove(struct ub913_data *priv)
+{
+ gpiochip_remove(&priv->gpio_chip);
+}
+
+static const struct regmap_config ub913_regmap_config = {
+ .name = "ds90ub913",
+ .reg_bits = 8,
+ .val_bits = 8,
+ .reg_format_endian = REGMAP_ENDIAN_DEFAULT,
+ .val_format_endian = REGMAP_ENDIAN_DEFAULT,
+};
+
+/*
+ * V4L2
+ */
+
+static int ub913_enable_streams(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state, u32 pad,
+ u64 streams_mask)
+{
+ struct ub913_data *priv = sd_to_ub913(sd);
+ u64 sink_streams;
+ int ret;
+
+ sink_streams = v4l2_subdev_state_xlate_streams(state, UB913_PAD_SOURCE,
+ UB913_PAD_SINK,
+ &streams_mask);
+
+ ret = v4l2_subdev_enable_streams(priv->source_sd, priv->source_sd_pad,
+ sink_streams);
+ if (ret)
+ return ret;
+
+ priv->enabled_source_streams |= streams_mask;
+
+ return 0;
+}
+
+static int ub913_disable_streams(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state, u32 pad,
+ u64 streams_mask)
+{
+ struct ub913_data *priv = sd_to_ub913(sd);
+ u64 sink_streams;
+ int ret;
+
+ sink_streams = v4l2_subdev_state_xlate_streams(state, UB913_PAD_SOURCE,
+ UB913_PAD_SINK,
+ &streams_mask);
+
+ ret = v4l2_subdev_disable_streams(priv->source_sd, priv->source_sd_pad,
+ sink_streams);
+ if (ret)
+ return ret;
+
+ priv->enabled_source_streams &= ~streams_mask;
+
+ return 0;
+}
+
+static int _ub913_set_routing(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ struct v4l2_subdev_krouting *routing)
+{
+ static const struct v4l2_mbus_framefmt informat = {
+ .width = 640,
+ .height = 480,
+ .code = MEDIA_BUS_FMT_UYVY8_2X8,
+ .field = V4L2_FIELD_NONE,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .ycbcr_enc = V4L2_YCBCR_ENC_601,
+ .quantization = V4L2_QUANTIZATION_LIM_RANGE,
+ .xfer_func = V4L2_XFER_FUNC_SRGB,
+ };
+ static const struct v4l2_mbus_framefmt outformat = {
+ .width = 640,
+ .height = 480,
+ .code = MEDIA_BUS_FMT_UYVY8_1X16,
+ .field = V4L2_FIELD_NONE,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .ycbcr_enc = V4L2_YCBCR_ENC_601,
+ .quantization = V4L2_QUANTIZATION_LIM_RANGE,
+ .xfer_func = V4L2_XFER_FUNC_SRGB,
+ };
+ struct v4l2_subdev_stream_configs *stream_configs;
+ unsigned int i;
+ int ret;
+
+ /*
+ * Note: we can only support up to V4L2_FRAME_DESC_ENTRY_MAX, until
+ * frame desc is made dynamically allocated.
+ */
+
+ if (routing->num_routes > V4L2_FRAME_DESC_ENTRY_MAX)
+ return -EINVAL;
+
+ ret = v4l2_subdev_routing_validate(sd, routing,
+ V4L2_SUBDEV_ROUTING_ONLY_1_TO_1);
+ if (ret)
+ return ret;
+
+ ret = v4l2_subdev_set_routing(sd, state, routing);
+ if (ret)
+ return ret;
+
+ stream_configs = &state->stream_configs;
+
+ for (i = 0; i < stream_configs->num_configs; ++i) {
+ if (stream_configs->configs[i].pad == UB913_PAD_SINK)
+ stream_configs->configs[i].fmt = informat;
+ else
+ stream_configs->configs[i].fmt = outformat;
+ }
+
+ return 0;
+}
+
+static int ub913_set_routing(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ enum v4l2_subdev_format_whence which,
+ struct v4l2_subdev_krouting *routing)
+{
+ struct ub913_data *priv = sd_to_ub913(sd);
+
+ if (which == V4L2_SUBDEV_FORMAT_ACTIVE && priv->enabled_source_streams)
+ return -EBUSY;
+
+ return _ub913_set_routing(sd, state, routing);
+}
+
+static int ub913_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
+ struct v4l2_mbus_frame_desc *fd)
+{
+ struct ub913_data *priv = sd_to_ub913(sd);
+ const struct v4l2_subdev_krouting *routing;
+ struct v4l2_mbus_frame_desc source_fd;
+ struct v4l2_subdev_route *route;
+ struct v4l2_subdev_state *state;
+ int ret;
+
+ if (pad != UB913_PAD_SOURCE)
+ return -EINVAL;
+
+ ret = v4l2_subdev_call(priv->source_sd, pad, get_frame_desc,
+ priv->source_sd_pad, &source_fd);
+ if (ret)
+ return ret;
+
+ memset(fd, 0, sizeof(*fd));
+
+ fd->type = V4L2_MBUS_FRAME_DESC_TYPE_PARALLEL;
+
+ state = v4l2_subdev_lock_and_get_active_state(sd);
+
+ routing = &state->routing;
+
+ for_each_active_route(routing, route) {
+ unsigned int i;
+
+ if (route->source_pad != pad)
+ continue;
+
+ for (i = 0; i < source_fd.num_entries; ++i) {
+ if (source_fd.entry[i].stream == route->sink_stream)
+ break;
+ }
+
+ if (i == source_fd.num_entries) {
+ dev_err(&priv->client->dev,
+ "Failed to find stream from source frame desc\n");
+ ret = -EPIPE;
+ goto out_unlock;
+ }
+
+ fd->entry[fd->num_entries].stream = route->source_stream;
+ fd->entry[fd->num_entries].flags = source_fd.entry[i].flags;
+ fd->entry[fd->num_entries].length = source_fd.entry[i].length;
+ fd->entry[fd->num_entries].pixelcode =
+ source_fd.entry[i].pixelcode;
+
+ fd->num_entries++;
+ }
+
+out_unlock:
+ v4l2_subdev_unlock_state(state);
+
+ return ret;
+}
+
+static int ub913_set_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ struct v4l2_subdev_format *format)
+{
+ struct ub913_data *priv = sd_to_ub913(sd);
+ struct v4l2_mbus_framefmt *fmt;
+ const struct ub913_format_info *finfo;
+
+ if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE &&
+ priv->enabled_source_streams)
+ return -EBUSY;
+
+ /* Source format is fully defined by the sink format, so not settable */
+ if (format->pad == UB913_PAD_SOURCE)
+ return v4l2_subdev_get_fmt(sd, state, format);
+
+ finfo = ub913_find_format(format->format.code);
+ if (!finfo) {
+ finfo = &ub913_formats[0];
+ format->format.code = finfo->incode;
+ }
+
+ /* Set sink format */
+ fmt = v4l2_subdev_state_get_stream_format(state, format->pad,
+ format->stream);
+ if (!fmt)
+ return -EINVAL;
+
+ *fmt = format->format;
+
+ /* Propagate to source format, and adjust the mbus code */
+ fmt = v4l2_subdev_state_get_opposite_stream_format(state, format->pad,
+ format->stream);
+ if (!fmt)
+ return -EINVAL;
+
+ format->format.code = finfo->outcode;
+
+ *fmt = format->format;
+
+ return 0;
+}
+
+static int ub913_init_cfg(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state)
+{
+ struct v4l2_subdev_route routes[] = {
+ {
+ .sink_pad = UB913_PAD_SINK,
+ .sink_stream = 0,
+ .source_pad = UB913_PAD_SOURCE,
+ .source_stream = 0,
+ .flags = V4L2_SUBDEV_ROUTE_FL_ACTIVE,
+ },
+ };
+
+ struct v4l2_subdev_krouting routing = {
+ .num_routes = ARRAY_SIZE(routes),
+ .routes = routes,
+ };
+
+ return _ub913_set_routing(sd, state, &routing);
+}
+
+static int ub913_log_status(struct v4l2_subdev *sd)
+{
+ struct ub913_data *priv = sd_to_ub913(sd);
+ struct device *dev = &priv->client->dev;
+ u8 v, v1, v2;
+
+ ub913_read(priv, UB913_REG_MODE_SEL, &v);
+ dev_info(dev, "MODE_SEL %#02x\n", v);
+
+ ub913_read(priv, UB913_REG_CRC_ERRORS_LSB, &v1);
+ ub913_read(priv, UB913_REG_CRC_ERRORS_MSB, &v2);
+ dev_info(dev, "CRC errors %u\n", v1 | (v2 << 8));
+
+ /* clear CRC errors */
+ ub913_read(priv, UB913_REG_GENERAL_CFG, &v);
+ ub913_write(priv, UB913_REG_GENERAL_CFG,
+ v | UB913_REG_GENERAL_CFG_CRC_ERR_RESET);
+ ub913_write(priv, UB913_REG_GENERAL_CFG, v);
+
+ ub913_read(priv, UB913_REG_GENERAL_STATUS, &v);
+ dev_info(dev, "GENERAL_STATUS %#02x\n", v);
+
+ ub913_read(priv, UB913_REG_PLL_OVR, &v);
+ dev_info(dev, "PLL_OVR %#02x\n", v);
+
+ return 0;
+}
+
+static const struct v4l2_subdev_core_ops ub913_subdev_core_ops = {
+ .log_status = ub913_log_status,
+};
+
+static const struct v4l2_subdev_pad_ops ub913_pad_ops = {
+ .enable_streams = ub913_enable_streams,
+ .disable_streams = ub913_disable_streams,
+ .set_routing = ub913_set_routing,
+ .get_frame_desc = ub913_get_frame_desc,
+ .get_fmt = v4l2_subdev_get_fmt,
+ .set_fmt = ub913_set_fmt,
+ .init_cfg = ub913_init_cfg,
+};
+
+static const struct v4l2_subdev_ops ub913_subdev_ops = {
+ .core = &ub913_subdev_core_ops,
+ .pad = &ub913_pad_ops,
+};
+
+static const struct media_entity_operations ub913_entity_ops = {
+ .link_validate = v4l2_subdev_link_validate,
+};
+
+static int ub913_notify_bound(struct v4l2_async_notifier *notifier,
+ struct v4l2_subdev *source_subdev,
+ struct v4l2_async_subdev *asd)
+{
+ struct ub913_data *priv = sd_to_ub913(notifier->sd);
+ struct device *dev = &priv->client->dev;
+ int ret;
+
+ ret = media_entity_get_fwnode_pad(&source_subdev->entity,
+ source_subdev->fwnode,
+ MEDIA_PAD_FL_SOURCE);
+ if (ret < 0) {
+ dev_err(dev, "Failed to find pad for %s\n",
+ source_subdev->name);
+ return ret;
+ }
+
+ priv->source_sd = source_subdev;
+ priv->source_sd_pad = ret;
+
+ ret = media_create_pad_link(&source_subdev->entity, priv->source_sd_pad,
+ &priv->sd.entity, UB913_PAD_SINK,
+ MEDIA_LNK_FL_ENABLED |
+ MEDIA_LNK_FL_IMMUTABLE);
+ if (ret) {
+ dev_err(dev, "Unable to link %s:%u -> %s:0\n",
+ source_subdev->name, priv->source_sd_pad,
+ priv->sd.name);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct v4l2_async_notifier_operations ub913_notify_ops = {
+ .bound = ub913_notify_bound,
+};
+
+static int ub913_v4l2_notifier_register(struct ub913_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ struct v4l2_async_subdev *asd;
+ struct fwnode_handle *ep_fwnode;
+ int ret;
+
+ ep_fwnode = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev),
+ UB913_PAD_SINK, 0, 0);
+ if (!ep_fwnode) {
+ dev_err(dev, "No graph endpoint\n");
+ return -ENODEV;
+ }
+
+ v4l2_async_nf_init(&priv->notifier);
+
+ asd = v4l2_async_nf_add_fwnode_remote(&priv->notifier, ep_fwnode,
+ struct v4l2_async_subdev);
+
+ fwnode_handle_put(ep_fwnode);
+
+ if (IS_ERR(asd)) {
+ dev_err(dev, "Failed to add subdev: %ld", PTR_ERR(asd));
+ v4l2_async_nf_cleanup(&priv->notifier);
+ return PTR_ERR(asd);
+ }
+
+ priv->notifier.ops = &ub913_notify_ops;
+
+ ret = v4l2_async_subdev_nf_register(&priv->sd, &priv->notifier);
+ if (ret) {
+ dev_err(dev, "Failed to register subdev_notifier");
+ v4l2_async_nf_cleanup(&priv->notifier);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void ub913_v4l2_nf_unregister(struct ub913_data *priv)
+{
+ v4l2_async_nf_unregister(&priv->notifier);
+ v4l2_async_nf_cleanup(&priv->notifier);
+}
+
+static int ub913_register_clkout(struct ub913_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ const char *name;
+ int ret;
+
+ name = kasprintf(GFP_KERNEL, "ds90ub913.%s.clk_out", dev_name(dev));
+ if (!name)
+ return -ENOMEM;
+
+ priv->clkout_clk_hw = devm_clk_hw_register_fixed_factor(dev, name,
+ __clk_get_name(priv->clkin), 0, 1, 2);
+
+ kfree(name);
+
+ if (IS_ERR(priv->clkout_clk_hw))
+ return dev_err_probe(dev, PTR_ERR(priv->clkout_clk_hw),
+ "Cannot register clkout hw\n");
+
+ ret = devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get,
+ priv->clkout_clk_hw);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "Cannot add OF clock provider\n");
+
+ return 0;
+}
+
+static int ub913_i2c_master_init(struct ub913_data *priv)
+{
+ /* i2c fast mode */
+ u32 scl_high = 600 + 300; /* high period + rise time, ns */
+ u32 scl_low = 1300 + 300; /* low period + fall time, ns */
+ unsigned long ref;
+ int ret;
+
+ ref = clk_get_rate(priv->clkin) / 2;
+
+ scl_high = div64_u64((u64)scl_high * ref, 1000000000);
+ scl_low = div64_u64((u64)scl_low * ref, 1000000000);
+
+ ret = ub913_write(priv, UB913_REG_SCL_HIGH_TIME, scl_high);
+ if (ret)
+ return ret;
+
+ ret = ub913_write(priv, UB913_REG_SCL_LOW_TIME, scl_low);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int ub913_add_i2c_adapter(struct ub913_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ struct fwnode_handle *i2c_handle;
+ int ret;
+
+ i2c_handle = device_get_named_child_node(dev, "i2c");
+ if (!i2c_handle)
+ return 0;
+
+ ret = i2c_atr_add_adapter(priv->plat_data->atr, priv->plat_data->port,
+ dev, i2c_handle);
+
+ fwnode_handle_put(i2c_handle);
+
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int ub913_parse_dt(struct ub913_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ struct fwnode_handle *ep_fwnode;
+ int ret;
+
+ ep_fwnode = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev),
+ UB913_PAD_SINK, 0, 0);
+ if (!ep_fwnode) {
+ dev_err_probe(dev, -ENOENT, "No sink endpoint\n");
+ return -ENOENT;
+ }
+
+ ret = fwnode_property_read_u32(ep_fwnode, "pclk-sample",
+ &priv->pclk_polarity);
+
+ fwnode_handle_put(ep_fwnode);
+
+ if (ret) {
+ dev_err_probe(dev, ret, "failed to parse 'pclk-sample'\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int ub913_hw_init(struct ub913_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ bool mode_override;
+ u8 mode;
+ int ret;
+ u8 v;
+
+ ret = ub913_read(priv, UB913_REG_MODE_SEL, &v);
+ if (ret)
+ return ret;
+
+ if (!(v & UB913_REG_MODE_SEL_MODE_UP_TO_DATE))
+ return dev_err_probe(dev, -ENODEV,
+ "Mode value not stabilized\n");
+
+ mode_override = v & UB913_REG_MODE_SEL_MODE_OVERRIDE;
+ mode = v & UB913_REG_MODE_SEL_MODE_MASK;
+
+ dev_dbg(dev, "mode from %s: %#x\n",
+ mode_override ? "reg" : "deserializer", mode);
+
+ ret = ub913_i2c_master_init(priv);
+ if (ret)
+ return dev_err_probe(dev, ret, "i2c master init failed\n");
+
+ ub913_read(priv, UB913_REG_GENERAL_CFG, &v);
+ v &= ~UB913_REG_GENERAL_CFG_PCLK_RISING;
+ v |= priv->pclk_polarity ? UB913_REG_GENERAL_CFG_PCLK_RISING : 0;
+ ub913_write(priv, UB913_REG_GENERAL_CFG, v);
+
+ return 0;
+}
+
+static int ub913_subdev_init(struct ub913_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ int ret;
+
+ v4l2_i2c_subdev_init(&priv->sd, priv->client, &ub913_subdev_ops);
+ priv->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_STREAMS;
+ priv->sd.entity.function = MEDIA_ENT_F_VID_IF_BRIDGE;
+ priv->sd.entity.ops = &ub913_entity_ops;
+
+ priv->pads[0].flags = MEDIA_PAD_FL_SINK;
+ priv->pads[1].flags = MEDIA_PAD_FL_SOURCE;
+
+ ret = media_entity_pads_init(&priv->sd.entity, 2, priv->pads);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to init pads\n");
+
+ priv->sd.fwnode = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev),
+ UB913_PAD_SOURCE, 0,
+ 0);
+
+ if (!priv->sd.fwnode) {
+ ret = -ENODEV;
+ dev_err_probe(dev, ret, "Missing TX endpoint\n");
+ goto err_entity_cleanup;
+ }
+
+ ret = v4l2_subdev_init_finalize(&priv->sd);
+ if (ret)
+ goto err_fwnode_put;
+
+ ret = ub913_v4l2_notifier_register(priv);
+ if (ret) {
+ dev_err_probe(dev, ret,
+ "v4l2 subdev notifier register failed\n");
+ goto err_subdev_cleanup;
+ }
+
+ ret = v4l2_async_register_subdev(&priv->sd);
+ if (ret) {
+ dev_err_probe(dev, ret, "v4l2_async_register_subdev error\n");
+ goto err_unreg_notif;
+ }
+
+ return 0;
+
+err_unreg_notif:
+ ub913_v4l2_nf_unregister(priv);
+err_subdev_cleanup:
+ v4l2_subdev_cleanup(&priv->sd);
+err_fwnode_put:
+ fwnode_handle_put(priv->sd.fwnode);
+err_entity_cleanup:
+ media_entity_cleanup(&priv->sd.entity);
+
+ return ret;
+}
+
+static void ub913_subdev_uninit(struct ub913_data *priv)
+{
+ v4l2_async_unregister_subdev(&priv->sd);
+ ub913_v4l2_nf_unregister(priv);
+ v4l2_subdev_cleanup(&priv->sd);
+ fwnode_handle_put(priv->sd.fwnode);
+ media_entity_cleanup(&priv->sd.entity);
+}
+
+static int ub913_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct ub913_data *priv;
+ int ret;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->client = client;
+
+ priv->plat_data = dev_get_platdata(&client->dev);
+ if (!priv->plat_data)
+ return dev_err_probe(dev, -ENODEV, "Platform data missing\n");
+
+ priv->regmap = devm_regmap_init_i2c(client, &ub913_regmap_config);
+ if (IS_ERR(priv->regmap))
+ return dev_err_probe(dev, PTR_ERR(priv->regmap),
+ "Failed to init regmap\n");
+
+ /*
+ * ub913 can also work without ext clock, but that is not supported by
+ * the driver yet.
+ */
+ priv->clkin = devm_clk_get(dev, "clkin");
+ if (IS_ERR(priv->clkin))
+ return dev_err_probe(dev, PTR_ERR(priv->clkin),
+ "Cannot get CLKIN\n");
+
+ ret = ub913_parse_dt(priv);
+ if (ret)
+ return ret;
+
+ ret = ub913_hw_init(priv);
+ if (ret)
+ return ret;
+
+ ret = ub913_gpiochip_probe(priv);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to init gpiochip\n");
+
+ ret = ub913_register_clkout(priv);
+ if (ret) {
+ dev_err_probe(dev, ret, "Failed to register clkout\n");
+ goto err_gpiochip_remove;
+ }
+
+ ret = ub913_subdev_init(priv);
+ if (ret)
+ goto err_gpiochip_remove;
+
+ ret = ub913_add_i2c_adapter(priv);
+ if (ret) {
+ dev_err_probe(dev, ret, "failed to add remote i2c adapter\n");
+ goto err_subdev_uninit;
+ }
+
+ return 0;
+
+err_subdev_uninit:
+ ub913_subdev_uninit(priv);
+err_gpiochip_remove:
+ ub913_gpiochip_remove(priv);
+
+ return ret;
+}
+
+static void ub913_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct ub913_data *priv = sd_to_ub913(sd);
+
+ i2c_atr_del_adapter(priv->plat_data->atr, priv->plat_data->port);
+
+ ub913_subdev_uninit(priv);
+
+ ub913_gpiochip_remove(priv);
+}
+
+static const struct i2c_device_id ub913_id[] = { { "ds90ub913a-q1", 0 }, {} };
+MODULE_DEVICE_TABLE(i2c, ub913_id);
+
+static const struct of_device_id ub913_dt_ids[] = {
+ { .compatible = "ti,ds90ub913a-q1" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, ub913_dt_ids);
+
+static struct i2c_driver ds90ub913_driver = {
+ .probe_new = ub913_probe,
+ .remove = ub913_remove,
+ .id_table = ub913_id,
+ .driver = {
+ .name = "ds90ub913a",
+ .of_match_table = ub913_dt_ids,
+ },
+};
+module_i2c_driver(ds90ub913_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Texas Instruments DS90UB913 FPD-Link III Serializer Driver");
+MODULE_AUTHOR("Luca Ceresoli <luca@lucaceresoli.net>");
+MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>");
+MODULE_IMPORT_NS(I2C_ATR);
--
2.34.1
^ permalink raw reply related [flat|nested] 16+ messages in thread* [PATCH v9 8/8] media: i2c: add DS90UB953 driver
2023-02-16 14:07 [PATCH v9 0/8] i2c-atr and FPDLink Tomi Valkeinen
` (6 preceding siblings ...)
2023-02-16 14:07 ` [PATCH v9 7/8] media: i2c: add DS90UB913 driver Tomi Valkeinen
@ 2023-02-16 14:07 ` Tomi Valkeinen
2023-02-16 15:53 ` [PATCH v9 0/8] i2c-atr and FPDLink Andy Shevchenko
8 siblings, 0 replies; 16+ messages in thread
From: Tomi Valkeinen @ 2023-02-16 14:07 UTC (permalink / raw)
To: linux-media, devicetree, linux-kernel, linux-i2c, Rob Herring,
Krzysztof Kozlowski, Wolfram Sang, Luca Ceresoli,
Andy Shevchenko, Matti Vaittinen, Laurent Pinchart
Cc: Mauro Carvalho Chehab, Peter Rosin, Liam Girdwood, Mark Brown,
Sakari Ailus, Michael Tretter, Shawn Tu, Hans Verkuil,
Mike Pagano, Krzysztof Hałasa, Marek Vasut,
Satish Nagireddy, Tomi Valkeinen, Laurent Pinchart
Add driver for TI DS90UB953 FPD-Link III Serializer.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
drivers/media/i2c/Kconfig | 13 +
drivers/media/i2c/Makefile | 1 +
drivers/media/i2c/ds90ub953.c | 1400 +++++++++++++++++++++++++++++++++
3 files changed, 1414 insertions(+)
create mode 100644 drivers/media/i2c/ds90ub953.c
diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index e0a1c2a5f3bf..0590312ec751 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -1614,6 +1614,19 @@ config VIDEO_DS90UB913
Device driver for the Texas Instruments DS90UB913
FPD-Link III Serializer.
+config VIDEO_DS90UB953
+ tristate "TI FPD-Link III/IV CSI-2 Serializers"
+ depends on OF && I2C && VIDEO_DEV
+ select I2C_ATR
+ select MEDIA_CONTROLLER
+ select OF_GPIO
+ select REGMAP_I2C
+ select V4L2_FWNODE
+ select VIDEO_V4L2_SUBDEV_API
+ help
+ Device driver for the Texas Instruments DS90UB953
+ FPD-Link III Serializer and DS90UB971 FPD-Link IV Serializer.
+
config VIDEO_DS90UB960
tristate "TI FPD-Link III/IV Deserializers"
depends on OF && I2C && VIDEO_DEV
diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
index 11bc0bd32c2e..6427ad971ca6 100644
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -30,6 +30,7 @@ obj-$(CONFIG_VIDEO_CS5345) += cs5345.o
obj-$(CONFIG_VIDEO_CS53L32A) += cs53l32a.o
obj-$(CONFIG_VIDEO_CX25840) += cx25840/
obj-$(CONFIG_VIDEO_DS90UB913) += ds90ub913.o
+obj-$(CONFIG_VIDEO_DS90UB953) += ds90ub953.o
obj-$(CONFIG_VIDEO_DS90UB960) += ds90ub960.o
obj-$(CONFIG_VIDEO_DW9714) += dw9714.o
obj-$(CONFIG_VIDEO_DW9768) += dw9768.o
diff --git a/drivers/media/i2c/ds90ub953.c b/drivers/media/i2c/ds90ub953.c
new file mode 100644
index 000000000000..6efe1460c976
--- /dev/null
+++ b/drivers/media/i2c/ds90ub953.c
@@ -0,0 +1,1400 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Driver for the Texas Instruments DS90UB953 video serializer
+ *
+ * Based on a driver from Luca Ceresoli <luca@lucaceresoli.net>
+ *
+ * Copyright (c) 2019 Luca Ceresoli <luca@lucaceresoli.net>
+ * Copyright (c) 2023 Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/fwnode.h>
+#include <linux/gpio/driver.h>
+#include <linux/i2c-atr.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/math64.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/rational.h>
+#include <linux/regmap.h>
+
+#include <media/i2c/ds90ub9xx.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-subdev.h>
+
+#define UB953_PAD_SINK 0
+#define UB953_PAD_SOURCE 1
+
+#define UB953_NUM_GPIOS 4
+
+#define UB953_REG_RESET_CTL 0x01
+#define UB953_REG_RESET_CTL_DIGITAL_RESET_1 BIT(1)
+#define UB953_REG_RESET_CTL_DIGITAL_RESET_0 BIT(0)
+
+#define UB953_REG_GENERAL_CFG 0x02
+#define UB953_REG_GENERAL_CFG_CONT_CLK BIT(6)
+#define UB953_REG_GENERAL_CFG_CSI_LANE_SEL_SHIFT 4
+#define UB953_REG_GENERAL_CFG_CSI_LANE_SEL_MASK GENMASK(5, 4)
+#define UB953_REG_GENERAL_CFG_CRC_TX_GEN_ENABLE BIT(1)
+#define UB953_REG_GENERAL_CFG_I2C_STRAP_MODE BIT(0)
+
+#define UB953_REG_MODE_SEL 0x03
+#define UB953_REG_MODE_SEL_MODE_DONE BIT(3)
+#define UB953_REG_MODE_SEL_MODE_OVERRIDE BIT(4)
+#define UB953_REG_MODE_SEL_MODE_MASK GENMASK(2, 0)
+
+#define UB953_REG_CLKOUT_CTRL0 0x06
+#define UB953_REG_CLKOUT_CTRL1 0x07
+
+#define UB953_REG_SCL_HIGH_TIME 0x0b
+#define UB953_REG_SCL_LOW_TIME 0x0c
+
+#define UB953_REG_LOCAL_GPIO_DATA 0x0d
+#define UB953_REG_LOCAL_GPIO_DATA_GPIO_RMTEN(n) BIT(4 + (n))
+#define UB953_REG_LOCAL_GPIO_DATA_GPIO_OUT_SRC(n) BIT(0 + (n))
+
+#define UB953_REG_GPIO_INPUT_CTRL 0x0e
+#define UB953_REG_GPIO_INPUT_CTRL_OUT_EN(n) BIT(4 + (n))
+#define UB953_REG_GPIO_INPUT_CTRL_INPUT_EN(n) BIT(0 + (n))
+
+#define UB953_REG_REV_MASK_ID 0x50
+#define UB953_REG_GENERAL_STATUS 0x52
+
+#define UB953_REG_GPIO_PIN_STS 0x53
+#define UB953_REG_GPIO_PIN_STS_GPIO_STS(n) BIT(0 + (n))
+
+#define UB953_REG_BIST_ERR_CNT 0x54
+#define UB953_REG_CRC_ERR_CNT1 0x55
+#define UB953_REG_CRC_ERR_CNT2 0x56
+
+#define UB953_REG_CSI_ERR_CNT 0x5c
+#define UB953_REG_CSI_ERR_STATUS 0x5d
+#define UB953_REG_CSI_ERR_DLANE01 0x5e
+#define UB953_REG_CSI_ERR_DLANE23 0x5f
+#define UB953_REG_CSI_ERR_CLK_LANE 0x60
+#define UB953_REG_CSI_PKT_HDR_VC_ID 0x61
+#define UB953_REG_PKT_HDR_WC_LSB 0x62
+#define UB953_REG_PKT_HDR_WC_MSB 0x63
+#define UB953_REG_CSI_ECC 0x64
+
+#define UB953_REG_IND_ACC_CTL 0xb0
+#define UB953_REG_IND_ACC_ADDR 0xb1
+#define UB953_REG_IND_ACC_DATA 0xb2
+
+#define UB953_REG_FPD3_RX_ID(n) (0xf0 + (n))
+
+/* Indirect register blocks */
+#define UB953_IND_TARGET_PAT_GEN 0x00
+#define UB953_IND_TARGET_FPD3_TX 0x01
+#define UB953_IND_TARGET_DIE_ID 0x02
+
+#define UB953_IND_PGEN_CTL 0x01
+#define UB953_IND_PGEN_CTL_PGEN_ENABLE BIT(0)
+#define UB953_IND_PGEN_CFG 0x02
+#define UB953_IND_PGEN_CSI_DI 0x03
+#define UB953_IND_PGEN_LINE_SIZE1 0x04
+#define UB953_IND_PGEN_LINE_SIZE0 0x05
+#define UB953_IND_PGEN_BAR_SIZE1 0x06
+#define UB953_IND_PGEN_BAR_SIZE0 0x07
+#define UB953_IND_PGEN_ACT_LPF1 0x08
+#define UB953_IND_PGEN_ACT_LPF0 0x09
+#define UB953_IND_PGEN_TOT_LPF1 0x0a
+#define UB953_IND_PGEN_TOT_LPF0 0x0b
+#define UB953_IND_PGEN_LINE_PD1 0x0c
+#define UB953_IND_PGEN_LINE_PD0 0x0d
+#define UB953_IND_PGEN_VBP 0x0e
+#define UB953_IND_PGEN_VFP 0x0f
+#define UB953_IND_PGEN_COLOR(n) (0x10 + (n)) /* n <= 15 */
+
+/* Note: Only sync mode supported for now */
+enum ub953_mode {
+ /* FPD-Link III CSI-2 synchronous mode */
+ UB953_MODE_SYNC,
+ /* FPD-Link III CSI-2 non-synchronous mode, external ref clock */
+ UB953_MODE_NONSYNC_EXT,
+ /* FPD-Link III CSI-2 non-synchronous mode, internal ref clock */
+ UB953_MODE_NONSYNC_INT,
+ /* FPD-Link III DVP mode */
+ UB953_MODE_DVP,
+};
+
+struct ub953_hw_data {
+ const char *model;
+ bool is_ub971;
+};
+
+struct ub953_data {
+ const struct ub953_hw_data *hw_data;
+
+ struct i2c_client *client;
+ struct regmap *regmap;
+
+ u32 num_data_lanes;
+
+ struct gpio_chip gpio_chip;
+
+ struct v4l2_subdev sd;
+ struct media_pad pads[2];
+
+ struct v4l2_async_notifier notifier;
+
+ struct v4l2_subdev *source_sd;
+ u16 source_sd_pad;
+
+ u64 enabled_source_streams;
+
+ /* lock for register access */
+ struct mutex reg_lock;
+
+ u8 current_indirect_target;
+
+ struct clk_hw clkout_clk_hw;
+
+ enum ub953_mode mode;
+
+ const struct ds90ub9xx_platform_data *plat_data;
+};
+
+static inline struct ub953_data *sd_to_ub953(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct ub953_data, sd);
+}
+
+/*
+ * HW Access
+ */
+
+static int ub953_read(struct ub953_data *priv, u8 reg, u8 *val)
+{
+ unsigned int v;
+ int ret;
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = regmap_read(priv->regmap, reg, &v);
+ if (ret) {
+ dev_err(&priv->client->dev, "Cannot read register 0x%02x: %d\n",
+ reg, ret);
+ goto out_unlock;
+ }
+
+ *val = v;
+
+out_unlock:
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+static int ub953_write(struct ub953_data *priv, u8 reg, u8 val)
+{
+ int ret;
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = regmap_write(priv->regmap, reg, val);
+ if (ret)
+ dev_err(&priv->client->dev,
+ "Cannot write register 0x%02x: %d\n", reg, ret);
+
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+static int ub953_select_ind_reg_block(struct ub953_data *priv, u8 block)
+{
+ struct device *dev = &priv->client->dev;
+ int ret;
+
+ if (priv->current_indirect_target == block)
+ return 0;
+
+ ret = regmap_write(priv->regmap, UB953_REG_IND_ACC_CTL, block << 2);
+ if (ret) {
+ dev_err(dev, "%s: cannot select indirect target %u (%d)\n",
+ __func__, block, ret);
+ return ret;
+ }
+
+ priv->current_indirect_target = block;
+
+ return 0;
+}
+
+__maybe_unused
+static int ub953_read_ind(struct ub953_data *priv, u8 block, u8 reg, u8 *val)
+{
+ unsigned int v;
+ int ret;
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = ub953_select_ind_reg_block(priv, block);
+ if (ret)
+ goto out_unlock;
+
+ ret = regmap_write(priv->regmap, UB953_REG_IND_ACC_ADDR, reg);
+ if (ret) {
+ dev_err(&priv->client->dev,
+ "Write to IND_ACC_ADDR failed when reading %u:%x02x: %d\n",
+ block, reg, ret);
+ goto out_unlock;
+ }
+
+ ret = regmap_read(priv->regmap, UB953_REG_IND_ACC_DATA, &v);
+ if (ret) {
+ dev_err(&priv->client->dev,
+ "Write to IND_ACC_DATA failed when reading %u:%x02x: %d\n",
+ block, reg, ret);
+ goto out_unlock;
+ }
+
+ *val = v;
+
+out_unlock:
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+__maybe_unused
+static int ub953_write_ind(struct ub953_data *priv, u8 block, u8 reg, u8 val)
+{
+ int ret;
+
+ mutex_lock(&priv->reg_lock);
+
+ ret = ub953_select_ind_reg_block(priv, block);
+ if (ret)
+ goto out;
+
+ ret = regmap_write(priv->regmap, UB953_REG_IND_ACC_ADDR, reg);
+ if (ret) {
+ dev_err(&priv->client->dev,
+ "Write to IND_ACC_ADDR failed when writing %u:%x02x: %d\n",
+ block, reg, ret);
+ goto out;
+ }
+
+ ret = regmap_write(priv->regmap, UB953_REG_IND_ACC_DATA, val);
+ if (ret) {
+ dev_err(&priv->client->dev,
+ "Write to IND_ACC_DATA failed when writing %u:%x02x\n: %d\n",
+ block, reg, ret);
+ }
+
+out:
+ mutex_unlock(&priv->reg_lock);
+
+ return ret;
+}
+
+/*
+ * GPIO chip
+ */
+static int ub953_gpio_get_direction(struct gpio_chip *gc, unsigned int offset)
+{
+ struct ub953_data *priv = gpiochip_get_data(gc);
+ int ret;
+ u8 v;
+
+ ret = ub953_read(priv, UB953_REG_GPIO_INPUT_CTRL, &v);
+ if (ret)
+ return ret;
+
+ if (v & UB953_REG_GPIO_INPUT_CTRL_INPUT_EN(offset))
+ return GPIO_LINE_DIRECTION_IN;
+ else
+ return GPIO_LINE_DIRECTION_OUT;
+}
+
+static int ub953_gpio_direction_in(struct gpio_chip *gc, unsigned int offset)
+{
+ struct ub953_data *priv = gpiochip_get_data(gc);
+
+ return regmap_update_bits(priv->regmap, UB953_REG_GPIO_INPUT_CTRL,
+ UB953_REG_GPIO_INPUT_CTRL_INPUT_EN(offset) |
+ UB953_REG_GPIO_INPUT_CTRL_OUT_EN(offset),
+ UB953_REG_GPIO_INPUT_CTRL_INPUT_EN(offset));
+}
+
+static int ub953_gpio_direction_out(struct gpio_chip *gc, unsigned int offset,
+ int value)
+{
+ struct ub953_data *priv = gpiochip_get_data(gc);
+ int ret;
+
+ ret = regmap_update_bits(priv->regmap, UB953_REG_LOCAL_GPIO_DATA,
+ UB953_REG_LOCAL_GPIO_DATA_GPIO_OUT_SRC(offset),
+ value ? UB953_REG_LOCAL_GPIO_DATA_GPIO_OUT_SRC(offset) :
+ 0);
+
+ if (ret)
+ return ret;
+
+ return regmap_update_bits(priv->regmap, UB953_REG_GPIO_INPUT_CTRL,
+ UB953_REG_GPIO_INPUT_CTRL_INPUT_EN(offset) |
+ UB953_REG_GPIO_INPUT_CTRL_OUT_EN(offset),
+ UB953_REG_GPIO_INPUT_CTRL_OUT_EN(offset));
+}
+
+static int ub953_gpio_get(struct gpio_chip *gc, unsigned int offset)
+{
+ struct ub953_data *priv = gpiochip_get_data(gc);
+ int ret;
+ u8 v;
+
+ ret = ub953_read(priv, UB953_REG_GPIO_PIN_STS, &v);
+ if (ret)
+ return ret;
+
+ return !!(v & UB953_REG_GPIO_PIN_STS_GPIO_STS(offset));
+}
+
+static void ub953_gpio_set(struct gpio_chip *gc, unsigned int offset, int value)
+{
+ struct ub953_data *priv = gpiochip_get_data(gc);
+
+ regmap_update_bits(priv->regmap, UB953_REG_LOCAL_GPIO_DATA,
+ UB953_REG_LOCAL_GPIO_DATA_GPIO_OUT_SRC(offset),
+ value ? UB953_REG_LOCAL_GPIO_DATA_GPIO_OUT_SRC(offset) :
+ 0);
+}
+
+static int ub953_gpio_of_xlate(struct gpio_chip *gc,
+ const struct of_phandle_args *gpiospec,
+ u32 *flags)
+{
+ if (flags)
+ *flags = gpiospec->args[1];
+
+ return gpiospec->args[0];
+}
+
+static int ub953_gpiochip_probe(struct ub953_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ struct gpio_chip *gc = &priv->gpio_chip;
+ int ret;
+
+ /* Set all GPIOs to local input mode */
+ ub953_write(priv, UB953_REG_LOCAL_GPIO_DATA, 0);
+ ub953_write(priv, UB953_REG_GPIO_INPUT_CTRL, 0xf);
+
+ gc->label = dev_name(dev);
+ gc->parent = dev;
+ gc->owner = THIS_MODULE;
+ gc->base = -1;
+ gc->can_sleep = true;
+ gc->ngpio = UB953_NUM_GPIOS;
+ gc->get_direction = ub953_gpio_get_direction;
+ gc->direction_input = ub953_gpio_direction_in;
+ gc->direction_output = ub953_gpio_direction_out;
+ gc->get = ub953_gpio_get;
+ gc->set = ub953_gpio_set;
+ gc->of_xlate = ub953_gpio_of_xlate;
+ gc->of_gpio_n_cells = 2;
+
+ ret = gpiochip_add_data(gc, priv);
+ if (ret) {
+ dev_err(dev, "Failed to add GPIOs: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void ub953_gpiochip_remove(struct ub953_data *priv)
+{
+ gpiochip_remove(&priv->gpio_chip);
+}
+
+/*
+ * V4L2
+ */
+
+static int _ub953_set_routing(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ struct v4l2_subdev_krouting *routing)
+{
+ static const struct v4l2_mbus_framefmt format = {
+ .width = 640,
+ .height = 480,
+ .code = MEDIA_BUS_FMT_UYVY8_1X16,
+ .field = V4L2_FIELD_NONE,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .ycbcr_enc = V4L2_YCBCR_ENC_601,
+ .quantization = V4L2_QUANTIZATION_LIM_RANGE,
+ .xfer_func = V4L2_XFER_FUNC_SRGB,
+ };
+ int ret;
+
+ /*
+ * Note: we can only support up to V4L2_FRAME_DESC_ENTRY_MAX, until
+ * frame desc is made dynamically allocated.
+ */
+
+ if (routing->num_routes > V4L2_FRAME_DESC_ENTRY_MAX)
+ return -EINVAL;
+
+ ret = v4l2_subdev_routing_validate(sd, routing,
+ V4L2_SUBDEV_ROUTING_ONLY_1_TO_1);
+ if (ret)
+ return ret;
+
+ ret = v4l2_subdev_set_routing_with_fmt(sd, state, routing, &format);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int ub953_set_routing(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ enum v4l2_subdev_format_whence which,
+ struct v4l2_subdev_krouting *routing)
+{
+ struct ub953_data *priv = sd_to_ub953(sd);
+
+ if (which == V4L2_SUBDEV_FORMAT_ACTIVE && priv->enabled_source_streams)
+ return -EBUSY;
+
+ return _ub953_set_routing(sd, state, routing);
+}
+
+static int ub953_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
+ struct v4l2_mbus_frame_desc *fd)
+{
+ struct ub953_data *priv = sd_to_ub953(sd);
+ struct v4l2_mbus_frame_desc source_fd;
+ struct v4l2_subdev_route *route;
+ struct v4l2_subdev_state *state;
+ int ret;
+
+ if (pad != UB953_PAD_SOURCE)
+ return -EINVAL;
+
+ ret = v4l2_subdev_call(priv->source_sd, pad, get_frame_desc,
+ priv->source_sd_pad, &source_fd);
+ if (ret)
+ return ret;
+
+ memset(fd, 0, sizeof(*fd));
+
+ fd->type = V4L2_MBUS_FRAME_DESC_TYPE_CSI2;
+
+ state = v4l2_subdev_lock_and_get_active_state(sd);
+
+ for_each_active_route(&state->routing, route) {
+ struct v4l2_mbus_frame_desc_entry *source_entry = NULL;
+ unsigned int i;
+
+ if (route->source_pad != pad)
+ continue;
+
+ for (i = 0; i < source_fd.num_entries; ++i) {
+ if (source_fd.entry[i].stream == route->sink_stream) {
+ source_entry = &source_fd.entry[i];
+ break;
+ }
+ }
+
+ if (!source_entry) {
+ dev_err(&priv->client->dev,
+ "Failed to find stream from source frame desc\n");
+ ret = -EPIPE;
+ goto out_unlock;
+ }
+
+ fd->entry[fd->num_entries].stream = route->source_stream;
+ fd->entry[fd->num_entries].flags = source_entry->flags;
+ fd->entry[fd->num_entries].length = source_entry->length;
+ fd->entry[fd->num_entries].pixelcode = source_entry->pixelcode;
+ fd->entry[fd->num_entries].bus.csi2.vc =
+ source_entry->bus.csi2.vc;
+ fd->entry[fd->num_entries].bus.csi2.dt =
+ source_entry->bus.csi2.dt;
+
+ fd->num_entries++;
+ }
+
+out_unlock:
+ v4l2_subdev_unlock_state(state);
+
+ return ret;
+}
+
+static int ub953_set_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ struct v4l2_subdev_format *format)
+{
+ struct ub953_data *priv = sd_to_ub953(sd);
+ struct v4l2_mbus_framefmt *fmt;
+
+ if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE &&
+ priv->enabled_source_streams)
+ return -EBUSY;
+
+ /* No transcoding, source and sink formats must match. */
+ if (format->pad == UB953_PAD_SOURCE)
+ return v4l2_subdev_get_fmt(sd, state, format);
+
+ /* Set sink format */
+ fmt = v4l2_subdev_state_get_stream_format(state, format->pad,
+ format->stream);
+ if (!fmt)
+ return -EINVAL;
+
+ *fmt = format->format;
+
+ /* Propagate to source format */
+ fmt = v4l2_subdev_state_get_opposite_stream_format(state, format->pad,
+ format->stream);
+ if (!fmt)
+ return -EINVAL;
+
+ *fmt = format->format;
+
+ return 0;
+}
+
+static int ub953_init_cfg(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state)
+{
+ struct v4l2_subdev_route routes[] = {
+ {
+ .sink_pad = UB953_PAD_SINK,
+ .sink_stream = 0,
+ .source_pad = UB953_PAD_SOURCE,
+ .source_stream = 0,
+ .flags = V4L2_SUBDEV_ROUTE_FL_ACTIVE,
+ },
+ };
+
+ struct v4l2_subdev_krouting routing = {
+ .num_routes = ARRAY_SIZE(routes),
+ .routes = routes,
+ };
+
+ return _ub953_set_routing(sd, state, &routing);
+}
+
+static int ub953_log_status(struct v4l2_subdev *sd)
+{
+ struct ub953_data *priv = sd_to_ub953(sd);
+ struct device *dev = &priv->client->dev;
+ u8 v = 0, v1 = 0, v2 = 0;
+ unsigned int i;
+ char id[7];
+ u8 gpio_local_data;
+ u8 gpio_input_ctrl;
+ u8 gpio_pin_sts;
+
+ for (i = 0; i < 6; ++i)
+ ub953_read(priv, UB953_REG_FPD3_RX_ID(i), &id[i]);
+ id[6] = 0;
+
+ dev_info(dev, "ID '%s'\n", id);
+
+ ub953_read(priv, UB953_REG_GENERAL_STATUS, &v);
+ dev_info(dev, "GENERAL_STATUS %#02x\n", v);
+
+ ub953_read(priv, UB953_REG_CRC_ERR_CNT1, &v1);
+ ub953_read(priv, UB953_REG_CRC_ERR_CNT2, &v2);
+ dev_info(dev, "CRC error count %u\n", v1 | (v2 << 8));
+
+ ub953_read(priv, UB953_REG_CSI_ERR_CNT, &v);
+ dev_info(dev, "CSI error count %u\n", v);
+
+ ub953_read(priv, UB953_REG_CSI_ERR_STATUS, &v);
+ dev_info(dev, "CSI_ERR_STATUS %#02x\n", v);
+
+ ub953_read(priv, UB953_REG_CSI_ERR_DLANE01, &v);
+ dev_info(dev, "CSI_ERR_DLANE01 %#02x\n", v);
+
+ ub953_read(priv, UB953_REG_CSI_ERR_DLANE23, &v);
+ dev_info(dev, "CSI_ERR_DLANE23 %#02x\n", v);
+
+ ub953_read(priv, UB953_REG_CSI_ERR_CLK_LANE, &v);
+ dev_info(dev, "CSI_ERR_CLK_LANE %#02x\n", v);
+
+ ub953_read(priv, UB953_REG_CSI_PKT_HDR_VC_ID, &v);
+ dev_info(dev, "CSI packet header VC %u ID %u\n", v >> 6, v & 0x3f);
+
+ ub953_read(priv, UB953_REG_PKT_HDR_WC_LSB, &v1);
+ ub953_read(priv, UB953_REG_PKT_HDR_WC_MSB, &v2);
+ dev_info(dev, "CSI packet header WC %u\n", (v2 << 8) | v1);
+
+ ub953_read(priv, UB953_REG_CSI_ECC, &v);
+ dev_info(dev, "CSI ECC %#02x\n", v);
+
+ ub953_read(priv, UB953_REG_LOCAL_GPIO_DATA, &gpio_local_data);
+ ub953_read(priv, UB953_REG_GPIO_INPUT_CTRL, &gpio_input_ctrl);
+ ub953_read(priv, UB953_REG_GPIO_PIN_STS, &gpio_pin_sts);
+
+ for (i = 0; i < UB953_NUM_GPIOS; ++i) {
+ dev_info(dev,
+ "GPIO%u: remote: %u is_input: %u is_output: %u val: %u sts: %u\n",
+ i,
+ !!(gpio_local_data & UB953_REG_LOCAL_GPIO_DATA_GPIO_RMTEN(i)),
+ !!(gpio_input_ctrl & UB953_REG_GPIO_INPUT_CTRL_INPUT_EN(i)),
+ !!(gpio_input_ctrl & UB953_REG_GPIO_INPUT_CTRL_OUT_EN(i)),
+ !!(gpio_local_data & UB953_REG_LOCAL_GPIO_DATA_GPIO_OUT_SRC(i)),
+ !!(gpio_pin_sts & UB953_REG_GPIO_PIN_STS_GPIO_STS(i)));
+ }
+
+ return 0;
+}
+
+static int ub953_enable_streams(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state, u32 pad,
+ u64 streams_mask)
+{
+ struct ub953_data *priv = sd_to_ub953(sd);
+ u64 sink_streams;
+ int ret;
+
+ sink_streams = v4l2_subdev_state_xlate_streams(state, UB953_PAD_SOURCE,
+ UB953_PAD_SINK,
+ &streams_mask);
+
+ ret = v4l2_subdev_enable_streams(priv->source_sd, priv->source_sd_pad,
+ sink_streams);
+ if (ret)
+ return ret;
+
+ priv->enabled_source_streams |= streams_mask;
+
+ return 0;
+}
+
+static int ub953_disable_streams(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state, u32 pad,
+ u64 streams_mask)
+{
+ struct ub953_data *priv = sd_to_ub953(sd);
+ u64 sink_streams;
+ int ret;
+
+ sink_streams = v4l2_subdev_state_xlate_streams(state, UB953_PAD_SOURCE,
+ UB953_PAD_SINK,
+ &streams_mask);
+
+ ret = v4l2_subdev_disable_streams(priv->source_sd, priv->source_sd_pad,
+ sink_streams);
+ if (ret)
+ return ret;
+
+ priv->enabled_source_streams &= ~streams_mask;
+
+ return 0;
+}
+
+static const struct v4l2_subdev_pad_ops ub953_pad_ops = {
+ .enable_streams = ub953_enable_streams,
+ .disable_streams = ub953_disable_streams,
+ .set_routing = ub953_set_routing,
+ .get_frame_desc = ub953_get_frame_desc,
+ .get_fmt = v4l2_subdev_get_fmt,
+ .set_fmt = ub953_set_fmt,
+ .init_cfg = ub953_init_cfg,
+};
+
+static const struct v4l2_subdev_core_ops ub953_subdev_core_ops = {
+ .log_status = ub953_log_status,
+ .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
+ .unsubscribe_event = v4l2_event_subdev_unsubscribe,
+};
+
+static const struct v4l2_subdev_ops ub953_subdev_ops = {
+ .core = &ub953_subdev_core_ops,
+ .pad = &ub953_pad_ops,
+};
+
+static const struct media_entity_operations ub953_entity_ops = {
+ .link_validate = v4l2_subdev_link_validate,
+};
+
+static int ub953_notify_bound(struct v4l2_async_notifier *notifier,
+ struct v4l2_subdev *source_subdev,
+ struct v4l2_async_subdev *asd)
+{
+ struct ub953_data *priv = sd_to_ub953(notifier->sd);
+ struct device *dev = &priv->client->dev;
+ int ret;
+
+ ret = media_entity_get_fwnode_pad(&source_subdev->entity,
+ source_subdev->fwnode,
+ MEDIA_PAD_FL_SOURCE);
+ if (ret < 0) {
+ dev_err(dev, "Failed to find pad for %s\n",
+ source_subdev->name);
+ return ret;
+ }
+
+ priv->source_sd = source_subdev;
+ priv->source_sd_pad = ret;
+
+ ret = media_create_pad_link(&source_subdev->entity, priv->source_sd_pad,
+ &priv->sd.entity, 0,
+ MEDIA_LNK_FL_ENABLED |
+ MEDIA_LNK_FL_IMMUTABLE);
+ if (ret) {
+ dev_err(dev, "Unable to link %s:%u -> %s:0\n",
+ source_subdev->name, priv->source_sd_pad,
+ priv->sd.name);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct v4l2_async_notifier_operations ub953_notify_ops = {
+ .bound = ub953_notify_bound,
+};
+
+static int ub953_v4l2_notifier_register(struct ub953_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ struct v4l2_async_subdev *asd;
+ struct fwnode_handle *ep_fwnode;
+ int ret;
+
+ ep_fwnode = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev),
+ UB953_PAD_SINK, 0, 0);
+ if (!ep_fwnode) {
+ dev_err(dev, "No graph endpoint\n");
+ return -ENODEV;
+ }
+
+ v4l2_async_nf_init(&priv->notifier);
+
+ asd = v4l2_async_nf_add_fwnode_remote(&priv->notifier, ep_fwnode,
+ struct v4l2_async_subdev);
+
+ fwnode_handle_put(ep_fwnode);
+
+ if (IS_ERR(asd)) {
+ dev_err(dev, "Failed to add subdev: %ld", PTR_ERR(asd));
+ v4l2_async_nf_cleanup(&priv->notifier);
+ return PTR_ERR(asd);
+ }
+
+ priv->notifier.ops = &ub953_notify_ops;
+
+ ret = v4l2_async_subdev_nf_register(&priv->sd, &priv->notifier);
+ if (ret) {
+ dev_err(dev, "Failed to register subdev_notifier");
+ v4l2_async_nf_cleanup(&priv->notifier);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void ub953_v4l2_notifier_unregister(struct ub953_data *priv)
+{
+ v4l2_async_nf_unregister(&priv->notifier);
+ v4l2_async_nf_cleanup(&priv->notifier);
+}
+
+/*
+ * Probing
+ */
+
+static int ub953_i2c_master_init(struct ub953_data *priv)
+{
+ /* i2c fast mode */
+ u32 ref = 26250000;
+ u32 scl_high = 915; /* ns */
+ u32 scl_low = 1641; /* ns */
+ int ret;
+
+ scl_high = div64_u64((u64)scl_high * ref, 1000000000) - 5;
+ scl_low = div64_u64((u64)scl_low * ref, 1000000000) - 5;
+
+ ret = ub953_write(priv, UB953_REG_SCL_HIGH_TIME, scl_high);
+ if (ret)
+ return ret;
+
+ ret = ub953_write(priv, UB953_REG_SCL_LOW_TIME, scl_low);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static u64 ub953_get_fc_rate(struct ub953_data *priv)
+{
+ if (priv->mode != UB953_MODE_SYNC) {
+ /* Not supported */
+ return 0;
+ }
+
+ if (priv->hw_data->is_ub971)
+ return priv->plat_data->bc_rate * 160ull;
+ else
+ return priv->plat_data->bc_rate / 2 * 160ull;
+}
+
+static unsigned long ub953_calc_clkout_ub953(struct ub953_data *priv,
+ unsigned long target, u64 fc,
+ u8 *hs_div, u8 *m, u8 *n)
+{
+ /*
+ * We always use 4 as a pre-divider (HS_CLK_DIV = 2).
+ *
+ * According to the datasheet:
+ * - "HS_CLK_DIV typically should be set to either 16, 8, or 4 (default)."
+ * - "if it is not possible to have an integer ratio of N/M, it is best to
+ * select a smaller value for HS_CLK_DIV.
+ *
+ * For above reasons the default HS_CLK_DIV seems the best in the average
+ * case. Use always that value to keep the code simple.
+ */
+ static const unsigned long hs_clk_div = 4;
+
+ u64 fc_divided;
+ unsigned long mul, div;
+ unsigned long res;
+
+ /* clkout = fc / hs_clk_div * m / n */
+
+ fc_divided = div_u64(fc, hs_clk_div);
+
+ rational_best_approximation(target, fc_divided, (1 << 5) - 1,
+ (1 << 8) - 1, &mul, &div);
+
+ res = div_u64(fc_divided * mul, div);
+
+ *hs_div = hs_clk_div;
+ *m = mul;
+ *n = div;
+
+ return res;
+}
+
+static unsigned long ub953_calc_clkout_ub971(struct ub953_data *priv,
+ unsigned long target, u64 fc,
+ u8 *m, u8 *n)
+{
+ u64 fc_divided;
+ unsigned long mul, div;
+ unsigned long res;
+
+ /* clkout = fc * m / (8 * n) */
+
+ fc_divided = div_u64(fc, 8);
+
+ rational_best_approximation(target, fc_divided, (1 << 5) - 1,
+ (1 << 8) - 1, &mul, &div);
+
+ res = div_u64(fc_divided * mul, div);
+
+ *m = mul;
+ *n = div;
+
+ return res;
+}
+
+static unsigned long ub953_clkout_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct ub953_data *priv = container_of(hw, struct ub953_data, clkout_clk_hw);
+ struct device *dev = &priv->client->dev;
+ u8 ctrl0, ctrl1;
+ u32 mul, div;
+ u64 fc_rate;
+ u32 hs_clk_div;
+ u64 rate;
+ int ret;
+
+ ret = ub953_read(priv, UB953_REG_CLKOUT_CTRL0, &ctrl0);
+ if (ret) {
+ dev_err(dev, "Failed to read CLKOUT_CTRL0: %d\n", ret);
+ return 0;
+ }
+
+ ret = ub953_read(priv, UB953_REG_CLKOUT_CTRL1, &ctrl1);
+ if (ret) {
+ dev_err(dev, "Failed to read CLKOUT_CTRL1: %d\n", ret);
+ return 0;
+ }
+
+ fc_rate = ub953_get_fc_rate(priv);
+
+ if (priv->hw_data->is_ub971) {
+ mul = ctrl0 & 0x1f;
+ div = ctrl1;
+
+ if (div == 0)
+ return 0;
+
+ rate = div_u64(fc_rate * mul, 8 * div);
+
+ dev_dbg(dev, "clkout: fc rate %llu, mul %u, div %u = %llu\n",
+ fc_rate, mul, div, rate);
+ } else {
+ mul = ctrl0 & 0x1f;
+ hs_clk_div = 1 << (ctrl0 >> 5);
+ div = ctrl1;
+
+ if (div == 0)
+ return 0;
+
+ rate = div_u64(div_u64(fc_rate, hs_clk_div) * mul, div);
+
+ dev_dbg(dev,
+ "clkout: fc rate %llu, hs_clk_div %u, mul %u, div %u = %llu\n",
+ fc_rate, hs_clk_div, mul, div, rate);
+ }
+
+ return rate;
+}
+
+static long ub953_clkout_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ struct ub953_data *priv = container_of(hw, struct ub953_data, clkout_clk_hw);
+ struct device *dev = &priv->client->dev;
+ unsigned long res;
+ u64 fc_rate;
+ u8 hs_div, m, n;
+
+ fc_rate = ub953_get_fc_rate(priv);
+
+ if (priv->hw_data->is_ub971) {
+ res = ub953_calc_clkout_ub971(priv, rate, fc_rate, &m, &n);
+
+ dev_dbg(dev, "%s %llu * %u / (8 * %u) = %lu (requested %lu)",
+ __func__, fc_rate, m, n, res, rate);
+ } else {
+ res = ub953_calc_clkout_ub953(priv, rate, fc_rate, &hs_div, &m, &n);
+
+ dev_dbg(dev, "%s %llu / %u * %u / %u = %lu (requested %lu)",
+ __func__, fc_rate, hs_div, m, n, res, rate);
+ }
+
+ return res;
+}
+
+static int ub953_clkout_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct ub953_data *priv = container_of(hw, struct ub953_data, clkout_clk_hw);
+ u64 fc_rate;
+ u8 hs_div, m, n;
+ unsigned long res;
+
+ fc_rate = ub953_get_fc_rate(priv);
+
+ if (priv->hw_data->is_ub971) {
+ res = ub953_calc_clkout_ub971(priv, rate, fc_rate, &m, &n);
+
+ ub953_write(priv, UB953_REG_CLKOUT_CTRL0, m);
+ ub953_write(priv, UB953_REG_CLKOUT_CTRL1, n);
+ } else {
+ res = ub953_calc_clkout_ub953(priv, rate, fc_rate, &hs_div, &m, &n);
+
+ ub953_write(priv, UB953_REG_CLKOUT_CTRL0, (__ffs(hs_div) << 5) | m);
+ ub953_write(priv, UB953_REG_CLKOUT_CTRL1, n);
+ }
+
+ dev_dbg(&priv->client->dev, "%s %lu (requested %lu)\n", __func__, res,
+ rate);
+
+ return 0;
+}
+
+static const struct clk_ops ub953_clkout_ops = {
+ .recalc_rate = ub953_clkout_recalc_rate,
+ .round_rate = ub953_clkout_round_rate,
+ .set_rate = ub953_clkout_set_rate,
+};
+
+static void ub953_init_clkout_ub953(struct ub953_data *priv)
+{
+ u64 fc_rate;
+ u8 hs_div, m, n;
+
+ fc_rate = ub953_get_fc_rate(priv);
+
+ ub953_calc_clkout_ub953(priv, 25000000, fc_rate, &hs_div, &m, &n);
+
+ ub953_write(priv, UB953_REG_CLKOUT_CTRL0, (__ffs(hs_div) << 5) | m);
+ ub953_write(priv, UB953_REG_CLKOUT_CTRL1, n);
+}
+
+static void ub953_init_clkout_ub971(struct ub953_data *priv)
+{
+ u64 fc_rate;
+ u8 m, n;
+
+ fc_rate = ub953_get_fc_rate(priv);
+
+ ub953_calc_clkout_ub971(priv, 25000000, fc_rate, &m, &n);
+
+ ub953_write(priv, UB953_REG_CLKOUT_CTRL0, m);
+ ub953_write(priv, UB953_REG_CLKOUT_CTRL1, n);
+}
+
+static int ub953_register_clkout(struct ub953_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ const struct clk_init_data init = {
+ .name = kasprintf(GFP_KERNEL, "ds90%s.%s.clk_out",
+ priv->hw_data->model, dev_name(dev)),
+ .ops = &ub953_clkout_ops,
+ };
+ int ret;
+
+ if (!init.name)
+ return -ENOMEM;
+
+ /* Initialize clkout to 25MHz by default */
+ if (priv->hw_data->is_ub971)
+ ub953_init_clkout_ub971(priv);
+ else
+ ub953_init_clkout_ub953(priv);
+
+ priv->clkout_clk_hw.init = &init;
+
+ ret = devm_clk_hw_register(dev, &priv->clkout_clk_hw);
+ kfree(init.name);
+ if (ret)
+ return dev_err_probe(dev, ret, "Cannot register clock HW\n");
+
+ ret = devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get,
+ &priv->clkout_clk_hw);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "Cannot add OF clock provider\n");
+
+ return 0;
+}
+
+static int ub953_add_i2c_adapter(struct ub953_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ struct fwnode_handle *i2c_handle;
+ int ret;
+
+ i2c_handle = device_get_named_child_node(dev, "i2c");
+ if (!i2c_handle)
+ return 0;
+
+ ret = i2c_atr_add_adapter(priv->plat_data->atr, priv->plat_data->port,
+ dev, i2c_handle);
+
+ fwnode_handle_put(i2c_handle);
+
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static const struct regmap_config ub953_regmap_config = {
+ .name = "ds90ub953",
+ .reg_bits = 8,
+ .val_bits = 8,
+ .reg_format_endian = REGMAP_ENDIAN_DEFAULT,
+ .val_format_endian = REGMAP_ENDIAN_DEFAULT,
+};
+
+static int ub953_parse_dt(struct ub953_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ struct fwnode_handle *ep_fwnode;
+ int ret;
+
+ ep_fwnode = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev),
+ UB953_PAD_SINK, 0, 0);
+ if (!ep_fwnode)
+ return dev_err_probe(dev, -ENOENT, "no endpoint found\n");
+
+ ret = fwnode_property_count_u32(ep_fwnode, "data-lanes");
+
+ fwnode_handle_put(ep_fwnode);
+
+ if (ret < 0)
+ return dev_err_probe(dev, ret,
+ "failed to parse property 'data-lanes'\n");
+
+ if (ret != 1 && ret != 2 && ret != 4)
+ return dev_err_probe(dev, -EINVAL,
+ "bad number of data-lanes: %d\n", ret);
+
+ priv->num_data_lanes = ret;
+
+ return 0;
+}
+
+static int ub953_hw_init(struct ub953_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ bool mode_override;
+ int ret;
+ u8 v;
+
+ ret = ub953_read(priv, UB953_REG_MODE_SEL, &v);
+ if (ret)
+ return ret;
+
+ if (!(v & UB953_REG_MODE_SEL_MODE_DONE))
+ return dev_err_probe(dev, -EIO, "Mode value not stabilized\n");
+
+ mode_override = v & UB953_REG_MODE_SEL_MODE_OVERRIDE;
+
+ switch (v & UB953_REG_MODE_SEL_MODE_MASK) {
+ case 0:
+ priv->mode = UB953_MODE_SYNC;
+ break;
+ case 2:
+ priv->mode = UB953_MODE_NONSYNC_EXT;
+ break;
+ case 3:
+ priv->mode = UB953_MODE_NONSYNC_INT;
+ break;
+ case 5:
+ priv->mode = UB953_MODE_DVP;
+ break;
+ default:
+ return dev_err_probe(dev, -EIO,
+ "Invalid mode in mode register\n");
+ }
+
+ dev_dbg(dev, "mode from %s: %#x\n", mode_override ? "reg" : "strap",
+ priv->mode);
+
+ if (priv->mode != UB953_MODE_SYNC)
+ return dev_err_probe(dev, -ENODEV,
+ "Only synchronous mode supported\n");
+
+ ret = ub953_read(priv, UB953_REG_REV_MASK_ID, &v);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to read revision");
+
+ dev_info(dev, "Found %s rev/mask %#04x\n", priv->hw_data->model, v);
+
+ ret = ub953_read(priv, UB953_REG_GENERAL_CFG, &v);
+ if (ret)
+ return ret;
+
+ dev_dbg(dev, "i2c strap setting %s V\n",
+ (v & UB953_REG_GENERAL_CFG_I2C_STRAP_MODE) ? "1.8" : "3.3");
+
+ ret = ub953_i2c_master_init(priv);
+ if (ret)
+ return dev_err_probe(dev, ret, "i2c init failed\n");
+
+ ub953_write(priv, UB953_REG_GENERAL_CFG,
+ UB953_REG_GENERAL_CFG_CONT_CLK |
+ ((priv->num_data_lanes - 1) << UB953_REG_GENERAL_CFG_CSI_LANE_SEL_SHIFT) |
+ UB953_REG_GENERAL_CFG_CRC_TX_GEN_ENABLE);
+
+ return 0;
+}
+
+static int ub953_subdev_init(struct ub953_data *priv)
+{
+ struct device *dev = &priv->client->dev;
+ int ret;
+
+ v4l2_i2c_subdev_init(&priv->sd, priv->client, &ub953_subdev_ops);
+
+ priv->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
+ V4L2_SUBDEV_FL_HAS_EVENTS | V4L2_SUBDEV_FL_STREAMS;
+ priv->sd.entity.function = MEDIA_ENT_F_VID_IF_BRIDGE;
+ priv->sd.entity.ops = &ub953_entity_ops;
+
+ priv->pads[0].flags = MEDIA_PAD_FL_SINK;
+ priv->pads[1].flags = MEDIA_PAD_FL_SOURCE;
+
+ ret = media_entity_pads_init(&priv->sd.entity, 2, priv->pads);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to init pads\n");
+
+ priv->sd.fwnode = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev),
+ UB953_PAD_SOURCE, 0,
+ 0);
+ if (!priv->sd.fwnode) {
+ ret = -ENODEV;
+ dev_err_probe(dev, ret, "Missing TX endpoint\n");
+ goto err_entity_cleanup;
+ }
+
+ ret = v4l2_subdev_init_finalize(&priv->sd);
+ if (ret)
+ goto err_fwnode_put;
+
+ ret = ub953_v4l2_notifier_register(priv);
+ if (ret) {
+ dev_err_probe(dev, ret,
+ "v4l2 subdev notifier register failed\n");
+ goto err_free_state;
+ }
+
+ ret = v4l2_async_register_subdev(&priv->sd);
+ if (ret) {
+ dev_err_probe(dev, ret, "v4l2_async_register_subdev error\n");
+ goto err_unreg_notif;
+ }
+
+ return 0;
+
+err_unreg_notif:
+ ub953_v4l2_notifier_unregister(priv);
+err_free_state:
+ v4l2_subdev_cleanup(&priv->sd);
+err_fwnode_put:
+ fwnode_handle_put(priv->sd.fwnode);
+err_entity_cleanup:
+ media_entity_cleanup(&priv->sd.entity);
+
+ return ret;
+}
+
+static void ub953_subdev_uninit(struct ub953_data *priv)
+{
+ v4l2_async_unregister_subdev(&priv->sd);
+ ub953_v4l2_notifier_unregister(priv);
+ v4l2_subdev_cleanup(&priv->sd);
+ fwnode_handle_put(priv->sd.fwnode);
+ media_entity_cleanup(&priv->sd.entity);
+}
+
+static int ub953_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct ub953_data *priv;
+ int ret;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->client = client;
+
+ priv->hw_data = device_get_match_data(dev);
+
+ priv->plat_data = dev_get_platdata(&client->dev);
+ if (!priv->plat_data)
+ return dev_err_probe(dev, -ENODEV, "Platform data missing\n");
+
+ mutex_init(&priv->reg_lock);
+
+ /*
+ * Initialize to invalid values so that the first reg writes will
+ * configure the target.
+ */
+ priv->current_indirect_target = 0xff;
+
+ priv->regmap = devm_regmap_init_i2c(client, &ub953_regmap_config);
+ if (IS_ERR(priv->regmap)) {
+ ret = PTR_ERR(priv->regmap);
+ dev_err_probe(dev, ret, "Failed to init regmap\n");
+ goto err_mutex_destroy;
+ }
+
+ ret = ub953_parse_dt(priv);
+ if (ret)
+ goto err_mutex_destroy;
+
+ ret = ub953_hw_init(priv);
+ if (ret)
+ goto err_mutex_destroy;
+
+ ret = ub953_gpiochip_probe(priv);
+ if (ret) {
+ dev_err_probe(dev, ret, "Failed to init gpiochip\n");
+ goto err_mutex_destroy;
+ }
+
+ ret = ub953_register_clkout(priv);
+ if (ret) {
+ dev_err_probe(dev, ret, "Failed to register clkout\n");
+ goto err_gpiochip_remove;
+ }
+
+ ret = ub953_subdev_init(priv);
+ if (ret)
+ goto err_gpiochip_remove;
+
+ ret = ub953_add_i2c_adapter(priv);
+ if (ret) {
+ dev_err_probe(dev, ret, "failed to add remote i2c adapter\n");
+ goto err_subdev_uninit;
+ }
+
+ return 0;
+
+err_subdev_uninit:
+ ub953_subdev_uninit(priv);
+err_gpiochip_remove:
+ ub953_gpiochip_remove(priv);
+err_mutex_destroy:
+ mutex_destroy(&priv->reg_lock);
+
+ return ret;
+}
+
+static void ub953_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct ub953_data *priv = sd_to_ub953(sd);
+
+ i2c_atr_del_adapter(priv->plat_data->atr, priv->plat_data->port);
+
+ ub953_subdev_uninit(priv);
+
+ ub953_gpiochip_remove(priv);
+ mutex_destroy(&priv->reg_lock);
+}
+
+static const struct ub953_hw_data ds90ub953_hw = {
+ .model = "ub953",
+};
+
+static const struct ub953_hw_data ds90ub971_hw = {
+ .model = "ub971",
+ .is_ub971 = true,
+};
+
+static const struct i2c_device_id ub953_id[] = {
+ { "ds90ub953-q1", (kernel_ulong_t)&ds90ub953_hw },
+ { "ds90ub971-q1", (kernel_ulong_t)&ds90ub971_hw },
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, ub953_id);
+
+static const struct of_device_id ub953_dt_ids[] = {
+ { .compatible = "ti,ds90ub953-q1", .data = &ds90ub953_hw },
+ { .compatible = "ti,ds90ub971-q1", .data = &ds90ub971_hw },
+ {}
+};
+MODULE_DEVICE_TABLE(of, ub953_dt_ids);
+
+static struct i2c_driver ds90ub953_driver = {
+ .probe_new = ub953_probe,
+ .remove = ub953_remove,
+ .id_table = ub953_id,
+ .driver = {
+ .name = "ds90ub953",
+ .owner = THIS_MODULE,
+ .of_match_table = ub953_dt_ids,
+ },
+};
+module_i2c_driver(ds90ub953_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Texas Instruments FPD-Link III/IV CSI-2 Serializers Driver");
+MODULE_AUTHOR("Luca Ceresoli <luca@lucaceresoli.net>");
+MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>");
+MODULE_IMPORT_NS(I2C_ATR);
--
2.34.1
^ permalink raw reply related [flat|nested] 16+ messages in thread* Re: [PATCH v9 0/8] i2c-atr and FPDLink
2023-02-16 14:07 [PATCH v9 0/8] i2c-atr and FPDLink Tomi Valkeinen
` (7 preceding siblings ...)
2023-02-16 14:07 ` [PATCH v9 8/8] media: i2c: add DS90UB953 driver Tomi Valkeinen
@ 2023-02-16 15:53 ` Andy Shevchenko
2023-02-17 6:57 ` Tomi Valkeinen
8 siblings, 1 reply; 16+ messages in thread
From: Andy Shevchenko @ 2023-02-16 15:53 UTC (permalink / raw)
To: Tomi Valkeinen
Cc: linux-media, devicetree, linux-kernel, linux-i2c, Rob Herring,
Krzysztof Kozlowski, Wolfram Sang, Luca Ceresoli,
Matti Vaittinen, Laurent Pinchart, Mauro Carvalho Chehab,
Peter Rosin, Liam Girdwood, Mark Brown, Sakari Ailus,
Michael Tretter, Shawn Tu, Hans Verkuil, Mike Pagano,
Krzysztof Hałasa, Marek Vasut, Satish Nagireddy
On Thu, Feb 16, 2023 at 04:07:39PM +0200, Tomi Valkeinen wrote:
...
> + if (!c2a)
I would expect here dev_warn() to let user know about "shouldn't happened, but
have happened" situation.
> + return; /* This shouldn't happen */
...
> - static const struct v4l2_mbus_framefmt format = {
> + static const struct v4l2_mbus_framefmt informat = {
Naming a bit confusing. Is it "information" that cut or what?
in_format
> + static const struct v4l2_mbus_framefmt outformat = {
out_format
...
> -out_unlock:
> +out:
Why?
...
> +/*
> + * (Possible) TODOs
TODOs:
> + *
> + * - PM for serializer and remote peripherals. We need to manage:
> + * - VPOC
> + * - Power domain? Regulator? Somehow any remote device should be able to
> + * cause the VPOC to be turned on.
> + * - Link between the deserializer and the serializer
> + * - Related to VPOC management. We probably always want to turn on the VPOC
> + * and then enable the link.
> + * - Serializer's services: i2c, gpios, power
> + * - The serializer needs to resume before the remote peripherals can
> + * e.g. use the i2c.
> + * - How to handle gpios? Reserving a gpio essentially keeps the provider
> + * (serializer) always powered on.
> + * - Do we need a new bus for the FPD-Link? At the moment the serializers
> + * are children of the same i2c-adapter where the deserializer resides.
> + * - i2c-atr could be made embeddable instead of allocatable.
> + */
...
> struct atr_alias_table_entry {
> u16 alias_id; /* Alias ID from DT */
>
> - bool reserved;
> + bool in_use;
> u8 nport;
> u8 slave_id; /* i2c client's local i2c address */
> u8 port_reg_idx;
Wouldn't be wiser to move boolean at the end so if any obscure
architecture/compiler makes it longer than a byte it won't increase the memory
footprint. (Actually wouldn't it be aligned to u16 followed by u8 as well as
they are different types?)
> };
...
> +static int ub960_read16(struct ub960_data *priv, u8 reg, u16 *val)
> +{
> + struct device *dev = &priv->client->dev;
> + unsigned int v1, v2;
> + int ret;
> +
> + mutex_lock(&priv->reg_lock);
> +
> + ret = regmap_read(priv->regmap, reg, &v1);
> + if (ret) {
> + dev_err(dev, "%s: cannot read register 0x%02x (%d)!\n",
> + __func__, reg, ret);
> + goto out_unlock;
> + }
> +
> + ret = regmap_read(priv->regmap, reg + 1, &v2);
> + if (ret) {
> + dev_err(dev, "%s: cannot read register 0x%02x (%d)!\n",
> + __func__, reg + 1, ret);
> + goto out_unlock;
> + }
Wondering why bulk read can't be used against properly typed __be16 variable?
> + *val = (v1 << 8) | v2;
+ be16_to_cpu() here.
> +out_unlock:
> + mutex_unlock(&priv->reg_lock);
> +
> + return ret;
> +}
...
> +static int ub960_rxport_read16(struct ub960_data *priv, u8 nport, u8 reg,
> + u16 *val)
> {
Ditto.
> +}
...
> struct i2c_board_info ser_info = {
> - .of_node = to_of_node(rxport->remote_fwnode),
> - .fwnode = rxport->remote_fwnode,
> + .of_node = to_of_node(rxport->ser.fwnode),
> + .fwnode = rxport->ser.fwnode,
Why do you need to have both?!
> .platform_data = ser_pdata,
> };
...
> + for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
Pre-increment is non-standard in the kernel.
> + struct ub960_rxport *rxport = priv->rxports[nport];
> + struct v4l2_mbus_frame_desc desc;
> + int ret;
> + u8 cur_vc;
> +
> + if (!rxport)
> + continue;
> +
> + ret = v4l2_subdev_call(rxport->source.sd, pad, get_frame_desc,
> + rxport->source.pad, &desc);
> + if (ret)
> + return ret;
> +
> + if (desc.type != V4L2_MBUS_FRAME_DESC_TYPE_CSI2)
> + continue;
cur_vc = desc.entry[0].bus.csi2.vc;
> + for (i = 0; i < desc.num_entries; ++i) {
> + u8 vc = desc.entry[i].bus.csi2.vc;
> + if (i == 0) {
> + cur_vc = vc;
> + continue;
> + }
This is an invariant to the loop, see above.
> + if (vc == cur_vc)
> + continue;
> +
> + dev_err(&priv->client->dev,
> + "rx%u: source with multiple virtual-channels is not supported\n",
> + nport);
> + return -ENODEV;
> + }
> + }
...
> + for (i = 0; i < 6; ++i)
> ub960_read(priv, UB960_SR_FPD3_RX_ID(i), &id[i]);
> id[6] = 0;
Wondering if this magic can be defined.
...
> + priv->atr.aliases = devm_kcalloc(dev, table_size,
> + sizeof(struct atr_alias_table_entry),
sizeof(*priv->atr.aliases) ?
> + GFP_KERNEL);
> + if (!priv->atr.aliases)
> return -ENOMEM;
...
> if (ret) {
> if (ret != -EINVAL) {
> - dev_err(dev,
> - "rx%u: failed to read 'ti,strobe-pos': %d\n",
> - nport, ret);
> + dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
> + "ti,strobe-pos", ret);
> return ret;
> }
> } else if (strobe_pos < UB960_MIN_MANUAL_STROBE_POS ||
> @@ -3512,8 +3403,8 @@ ub960_parse_dt_rxport_link_properties(struct ub960_data *priv,
> ret = fwnode_property_read_u32(link_fwnode, "ti,eq-level", &eq_level);
> if (ret) {
> if (ret != -EINVAL) {
> - dev_err(dev, "rx%u: failed to read 'ti,eq-level': %d\n",
> - nport, ret);
> + dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
> + "ti,eq-level", ret);
> return ret;
> }
> } else if (eq_level > UB960_MAX_EQ_LEVEL) {
Seems like you may do (in both cases) similar to the above:
var = 0;
ret = read_u32();
if (ret && ret != -EINVAL) {
// error handling
}
if (var > limit) {
// another error handling
}
...
> + static const char *vpoc_names[UB960_MAX_RX_NPORTS] = { "vpoc0", "vpoc1",
> + "vpoc2", "vpoc3" };
Wouldn't be better to format it as
static const char *vpoc_names[UB960_MAX_RX_NPORTS] = {
"vpoc0", "vpoc1", "vpoc2", "vpoc3",
};
?
--
With Best Regards,
Andy Shevchenko
^ permalink raw reply [flat|nested] 16+ messages in thread* Re: [PATCH v9 0/8] i2c-atr and FPDLink
2023-02-16 15:53 ` [PATCH v9 0/8] i2c-atr and FPDLink Andy Shevchenko
@ 2023-02-17 6:57 ` Tomi Valkeinen
2023-02-17 11:24 ` Andy Shevchenko
0 siblings, 1 reply; 16+ messages in thread
From: Tomi Valkeinen @ 2023-02-17 6:57 UTC (permalink / raw)
To: Andy Shevchenko
Cc: linux-media, devicetree, linux-kernel, linux-i2c, Rob Herring,
Krzysztof Kozlowski, Wolfram Sang, Luca Ceresoli,
Matti Vaittinen, Laurent Pinchart, Mauro Carvalho Chehab,
Peter Rosin, Liam Girdwood, Mark Brown, Sakari Ailus,
Michael Tretter, Shawn Tu, Hans Verkuil, Mike Pagano,
Krzysztof Hałasa, Marek Vasut, Satish Nagireddy
Hi,
On 16/02/2023 17:53, Andy Shevchenko wrote:
> On Thu, Feb 16, 2023 at 04:07:39PM +0200, Tomi Valkeinen wrote:
>
> ...
>
>> + if (!c2a)
>
> I would expect here dev_warn() to let user know about "shouldn't happened, but
> have happened" situation.
Sure, I'll add.
>> + return; /* This shouldn't happen */
>
> ...
>
>> - static const struct v4l2_mbus_framefmt format = {
>> + static const struct v4l2_mbus_framefmt informat = {
>
> Naming a bit confusing. Is it "information" that cut or what?
>
> in_format
Indeed, that's better.
>> + static const struct v4l2_mbus_framefmt outformat = {
>
> out_format
>
> ...
>
>> -out_unlock:
>> +out:
>
> Why?
I think this was a mistake, I'll change it back.
> ...
>
>> +/*
>> + * (Possible) TODOs
>
> TODOs:
Ok...
>> + *
>> + * - PM for serializer and remote peripherals. We need to manage:
>> + * - VPOC
>> + * - Power domain? Regulator? Somehow any remote device should be able to
>> + * cause the VPOC to be turned on.
>> + * - Link between the deserializer and the serializer
>> + * - Related to VPOC management. We probably always want to turn on the VPOC
>> + * and then enable the link.
>> + * - Serializer's services: i2c, gpios, power
>> + * - The serializer needs to resume before the remote peripherals can
>> + * e.g. use the i2c.
>> + * - How to handle gpios? Reserving a gpio essentially keeps the provider
>> + * (serializer) always powered on.
>> + * - Do we need a new bus for the FPD-Link? At the moment the serializers
>> + * are children of the same i2c-adapter where the deserializer resides.
>> + * - i2c-atr could be made embeddable instead of allocatable.
>> + */
>
> ...
>
>> struct atr_alias_table_entry {
>> u16 alias_id; /* Alias ID from DT */
>>
>> - bool reserved;
>> + bool in_use;
>> u8 nport;
>> u8 slave_id; /* i2c client's local i2c address */
>> u8 port_reg_idx;
>
> Wouldn't be wiser to move boolean at the end so if any obscure
> architecture/compiler makes it longer than a byte it won't increase the memory
> footprint. (Actually wouldn't it be aligned to u16 followed by u8 as well as
> they are different types?)
Sure, I can move it.
>> };
>
> ...
>
>> +static int ub960_read16(struct ub960_data *priv, u8 reg, u16 *val)
>> +{
>> + struct device *dev = &priv->client->dev;
>> + unsigned int v1, v2;
>> + int ret;
>> +
>> + mutex_lock(&priv->reg_lock);
>> +
>> + ret = regmap_read(priv->regmap, reg, &v1);
>> + if (ret) {
>> + dev_err(dev, "%s: cannot read register 0x%02x (%d)!\n",
>> + __func__, reg, ret);
>> + goto out_unlock;
>> + }
>> +
>> + ret = regmap_read(priv->regmap, reg + 1, &v2);
>> + if (ret) {
>> + dev_err(dev, "%s: cannot read register 0x%02x (%d)!\n",
>> + __func__, reg + 1, ret);
>> + goto out_unlock;
>> + }
>
> Wondering why bulk read can't be used against properly typed __be16 variable?
I'll do that.
>> + *val = (v1 << 8) | v2;
>
> + be16_to_cpu() here.
Yep.
>> +out_unlock:
>> + mutex_unlock(&priv->reg_lock);
>> +
>> + return ret;
>> +}
>
> ...
>
>> +static int ub960_rxport_read16(struct ub960_data *priv, u8 nport, u8 reg,
>> + u16 *val)
>> {
>
> Ditto.
>
>> +}
>
> ...
>
>> struct i2c_board_info ser_info = {
>> - .of_node = to_of_node(rxport->remote_fwnode),
>> - .fwnode = rxport->remote_fwnode,
>
>> + .of_node = to_of_node(rxport->ser.fwnode),
>> + .fwnode = rxport->ser.fwnode,
>
> Why do you need to have both?!
I didn't debug it, but having only fwnode there will break the probing
(no match).
>> .platform_data = ser_pdata,
>> };
>
> ...
>
>> + for (nport = 0; nport < priv->hw_data->num_rxports; ++nport) {
>
> Pre-increment is non-standard in the kernel.
>
>> + struct ub960_rxport *rxport = priv->rxports[nport];
>> + struct v4l2_mbus_frame_desc desc;
>> + int ret;
>> + u8 cur_vc;
>> +
>> + if (!rxport)
>> + continue;
>> +
>> + ret = v4l2_subdev_call(rxport->source.sd, pad, get_frame_desc,
>> + rxport->source.pad, &desc);
>> + if (ret)
>> + return ret;
>> +
>> + if (desc.type != V4L2_MBUS_FRAME_DESC_TYPE_CSI2)
>> + continue;
>
> cur_vc = desc.entry[0].bus.csi2.vc;
>
>> + for (i = 0; i < desc.num_entries; ++i) {
>> + u8 vc = desc.entry[i].bus.csi2.vc;
>
>> + if (i == 0) {
>> + cur_vc = vc;
>> + continue;
>> + }
>
> This is an invariant to the loop, see above.
Well, the current code handles the case of num_entries == 0. I can
change it as you suggest, and first check if num_entries == 0 and also
start the loop from 1.
>> + if (vc == cur_vc)
>> + continue;
>> +
>> + dev_err(&priv->client->dev,
>> + "rx%u: source with multiple virtual-channels is not supported\n",
>> + nport);
>> + return -ENODEV;
>> + }
>> + }
>
> ...
>
>> + for (i = 0; i < 6; ++i)
>> ub960_read(priv, UB960_SR_FPD3_RX_ID(i), &id[i]);
>> id[6] = 0;
>
> Wondering if this magic can be defined.
The number of ID registers? Yes, I can add a define.
> ...
>
>> + priv->atr.aliases = devm_kcalloc(dev, table_size,
>> + sizeof(struct atr_alias_table_entry),
>
> sizeof(*priv->atr.aliases) ?
Sure.
>> + GFP_KERNEL);
>> + if (!priv->atr.aliases)
>> return -ENOMEM;
>
> ...
>
>> if (ret) {
>> if (ret != -EINVAL) {
>> - dev_err(dev,
>> - "rx%u: failed to read 'ti,strobe-pos': %d\n",
>> - nport, ret);
>> + dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
>> + "ti,strobe-pos", ret);
>> return ret;
>> }
>> } else if (strobe_pos < UB960_MIN_MANUAL_STROBE_POS ||
>> @@ -3512,8 +3403,8 @@ ub960_parse_dt_rxport_link_properties(struct ub960_data *priv,
>> ret = fwnode_property_read_u32(link_fwnode, "ti,eq-level", &eq_level);
>> if (ret) {
>> if (ret != -EINVAL) {
>> - dev_err(dev, "rx%u: failed to read 'ti,eq-level': %d\n",
>> - nport, ret);
>> + dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
>> + "ti,eq-level", ret);
>> return ret;
>> }
>> } else if (eq_level > UB960_MAX_EQ_LEVEL) {
>
Hmm, I noticed this one (and the one above) was missing return -EINVAL.
> Seems like you may do (in both cases) similar to the above:
>
> var = 0;
> ret = read_u32();
> if (ret && ret != -EINVAL) {
> // error handling
> }
> if (var > limit) {
> // another error handling
> }
That's not the same. You'd also need to do:
if (!ret) {
// handle the retrieved value
}
which, I think, is not any clearer (perhaps more unclear).
What I could do is:
if (ret) {
if (ret != -EINVAL) {
dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
"ti,eq-level", ret);
return ret;
}
} else {
if (eq_level > UB960_MAX_EQ_LEVEL) {
dev_err(dev, "rx%u: illegal 'ti,eq-level' value: %d\n",
nport, eq_level);
return -EINVAL;
}
rxport->eq.manual_eq = true;
rxport->eq.manual.eq_level = eq_level;
}
Maybe the above style makes it clearer, as it clearly splits the "don't
have value" and "have value" branches.
> ...
>
>> + static const char *vpoc_names[UB960_MAX_RX_NPORTS] = { "vpoc0", "vpoc1",
>> + "vpoc2", "vpoc3" };
>
> Wouldn't be better to format it as
>
> static const char *vpoc_names[UB960_MAX_RX_NPORTS] = {
> "vpoc0", "vpoc1", "vpoc2", "vpoc3",
> };
>
> ?
Clang-format disagrees, but I agree with you ;).
Tomi
^ permalink raw reply [flat|nested] 16+ messages in thread* Re: [PATCH v9 0/8] i2c-atr and FPDLink
2023-02-17 6:57 ` Tomi Valkeinen
@ 2023-02-17 11:24 ` Andy Shevchenko
2023-02-17 12:57 ` Tomi Valkeinen
0 siblings, 1 reply; 16+ messages in thread
From: Andy Shevchenko @ 2023-02-17 11:24 UTC (permalink / raw)
To: Tomi Valkeinen
Cc: linux-media, devicetree, linux-kernel, linux-i2c, Rob Herring,
Krzysztof Kozlowski, Wolfram Sang, Luca Ceresoli,
Matti Vaittinen, Laurent Pinchart, Mauro Carvalho Chehab,
Peter Rosin, Liam Girdwood, Mark Brown, Sakari Ailus,
Michael Tretter, Shawn Tu, Hans Verkuil, Mike Pagano,
Krzysztof Hałasa, Marek Vasut, Satish Nagireddy
On Fri, Feb 17, 2023 at 08:57:32AM +0200, Tomi Valkeinen wrote:
> On 16/02/2023 17:53, Andy Shevchenko wrote:
> > On Thu, Feb 16, 2023 at 04:07:39PM +0200, Tomi Valkeinen wrote:
...
> > > struct i2c_board_info ser_info = {
> > > - .of_node = to_of_node(rxport->remote_fwnode),
> > > - .fwnode = rxport->remote_fwnode,
> >
> > > + .of_node = to_of_node(rxport->ser.fwnode),
> > > + .fwnode = rxport->ser.fwnode,
> >
> > Why do you need to have both?!
>
> I didn't debug it, but having only fwnode there will break the probing (no
> match).
This needs to be investigated. The whole fwnode approach, when we have both
fwnode and legacy of_node fields in the same data structure, is that fwnode
_OR_ of_node initialization is enough, when both are defined the fwnode
should take precedence.
If your testing is correct (and I have no doubts) it means we have a serious
bug lurking somewhere.
> > > .platform_data = ser_pdata,
> > > };
...
> > cur_vc = desc.entry[0].bus.csi2.vc;
> >
> > > + for (i = 0; i < desc.num_entries; ++i) {
> > > + u8 vc = desc.entry[i].bus.csi2.vc;
> >
> > > + if (i == 0) {
> > > + cur_vc = vc;
> > > + continue;
> > > + }
> >
> > This is an invariant to the loop, see above.
>
> Well, the current code handles the case of num_entries == 0. I can change it
> as you suggest, and first check if num_entries == 0 and also start the loop
> from 1.
You may try to compile both variants and see which one gets lets code.
I believe it will be mine or they are equivalent in case compiler is clever
enough to recognize the invariant.
> > > + if (vc == cur_vc)
> > > + continue;
> > > +
> > > + dev_err(&priv->client->dev,
> > > + "rx%u: source with multiple virtual-channels is not supported\n",
> > > + nport);
> > > + return -ENODEV;
> > > + }
...
> > > + for (i = 0; i < 6; ++i)
> > > ub960_read(priv, UB960_SR_FPD3_RX_ID(i), &id[i]);
> > > id[6] = 0;
> >
> > Wondering if this magic can be defined.
>
> The number of ID registers? Yes, I can add a define.
Yes.
...
...
> > > if (ret) {
> > > if (ret != -EINVAL) {
> > > - dev_err(dev,
> > > - "rx%u: failed to read 'ti,strobe-pos': %d\n",
> > > - nport, ret);
> > > + dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
> > > + "ti,strobe-pos", ret);
> > > return ret;
> > > }
> > > } else if (strobe_pos < UB960_MIN_MANUAL_STROBE_POS ||
> > > @@ -3512,8 +3403,8 @@ ub960_parse_dt_rxport_link_properties(struct ub960_data *priv,
> > > ret = fwnode_property_read_u32(link_fwnode, "ti,eq-level", &eq_level);
> > > if (ret) {
> > > if (ret != -EINVAL) {
> > > - dev_err(dev, "rx%u: failed to read 'ti,eq-level': %d\n",
> > > - nport, ret);
> > > + dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
> > > + "ti,eq-level", ret);
> > > return ret;
> > > }
> > > } else if (eq_level > UB960_MAX_EQ_LEVEL) {
> >
>
> Hmm, I noticed this one (and the one above) was missing return -EINVAL.
>
> > Seems like you may do (in both cases) similar to the above:
> >
> > var = 0;
> > ret = read_u32();
> > if (ret && ret != -EINVAL) {
> > // error handling
> > }
> > if (var > limit) {
> > // another error handling
> > }
>
> That's not the same. You'd also need to do:
>
> if (!ret) {
> // handle the retrieved value
> }
>
> which, I think, is not any clearer (perhaps more unclear).
>
> What I could do is:
>
> if (ret) {
> if (ret != -EINVAL) {
> dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
> "ti,eq-level", ret);
> return ret;
> }
> } else {
> if (eq_level > UB960_MAX_EQ_LEVEL) {
> dev_err(dev, "rx%u: illegal 'ti,eq-level' value: %d\n",
> nport, eq_level);
> return -EINVAL;
> }
>
> rxport->eq.manual_eq = true;
> rxport->eq.manual.eq_level = eq_level;
> }
>
> Maybe the above style makes it clearer, as it clearly splits the "don't have
> value" and "have value" branches.
Up to you, but this just a good example why I do not like how optional
properties are handled in a "smart" way.
To me
foo = DEFAULT;
_property_read_(&foo); // no error checking
is clean, neat, small and good enough solution.
...
> > > + static const char *vpoc_names[UB960_MAX_RX_NPORTS] = { "vpoc0", "vpoc1",
> > > + "vpoc2", "vpoc3" };
> >
> > Wouldn't be better to format it as
> >
> > static const char *vpoc_names[UB960_MAX_RX_NPORTS] = {
> > "vpoc0", "vpoc1", "vpoc2", "vpoc3",
> > };
> >
> > ?
>
> Clang-format disagrees, but I agree with you ;).
So it needs to be fixed then :-)
Glad that you agreed on this.
--
With Best Regards,
Andy Shevchenko
^ permalink raw reply [flat|nested] 16+ messages in thread* Re: [PATCH v9 0/8] i2c-atr and FPDLink
2023-02-17 11:24 ` Andy Shevchenko
@ 2023-02-17 12:57 ` Tomi Valkeinen
2023-02-17 13:45 ` Andy Shevchenko
0 siblings, 1 reply; 16+ messages in thread
From: Tomi Valkeinen @ 2023-02-17 12:57 UTC (permalink / raw)
To: Andy Shevchenko
Cc: linux-media, devicetree, linux-kernel, linux-i2c, Rob Herring,
Krzysztof Kozlowski, Wolfram Sang, Luca Ceresoli,
Matti Vaittinen, Laurent Pinchart, Mauro Carvalho Chehab,
Peter Rosin, Liam Girdwood, Mark Brown, Sakari Ailus,
Michael Tretter, Shawn Tu, Hans Verkuil, Mike Pagano,
Krzysztof Hałasa, Marek Vasut, Satish Nagireddy
On 17/02/2023 13:24, Andy Shevchenko wrote:
> On Fri, Feb 17, 2023 at 08:57:32AM +0200, Tomi Valkeinen wrote:
>> On 16/02/2023 17:53, Andy Shevchenko wrote:
>>> On Thu, Feb 16, 2023 at 04:07:39PM +0200, Tomi Valkeinen wrote:
>
> ...
>
>>>> struct i2c_board_info ser_info = {
>>>> - .of_node = to_of_node(rxport->remote_fwnode),
>>>> - .fwnode = rxport->remote_fwnode,
>>>
>>>> + .of_node = to_of_node(rxport->ser.fwnode),
>>>> + .fwnode = rxport->ser.fwnode,
>>>
>>> Why do you need to have both?!
>>
>> I didn't debug it, but having only fwnode there will break the probing (no
>> match).
>
> This needs to be investigated. The whole fwnode approach, when we have both
> fwnode and legacy of_node fields in the same data structure, is that fwnode
> _OR_ of_node initialization is enough, when both are defined the fwnode
> should take precedence.
>
> If your testing is correct (and I have no doubts) it means we have a serious
> bug lurking somewhere.
Having both defined or only of_node defined works for me.
Perhaps the issue is that these drivers only add of_match_table, and
thus having only .fwnode above is not enough.
Looking at i2c_device_match(), i2c_of_match_device() only uses of_node,
so perhaps I would need CONFIG_ACPI for acpi_driver_match_device to do
matching with of_node? Although I don't see the acpi code using fwnode,
just of_node. Well, I have to say I have no idea without spending more
time on this.
>>>> .platform_data = ser_pdata,
>>>> };
>
> ...
>
>>> cur_vc = desc.entry[0].bus.csi2.vc;
>>>
>>>> + for (i = 0; i < desc.num_entries; ++i) {
>>>> + u8 vc = desc.entry[i].bus.csi2.vc;
>>>
>>>> + if (i == 0) {
>>>> + cur_vc = vc;
>>>> + continue;
>>>> + }
>>>
>>> This is an invariant to the loop, see above.
>>
>> Well, the current code handles the case of num_entries == 0. I can change it
>> as you suggest, and first check if num_entries == 0 and also start the loop
>> from 1.
>
> You may try to compile both variants and see which one gets lets code.
> I believe it will be mine or they are equivalent in case compiler is clever
> enough to recognize the invariant.
But your suggestion accesses desc.entry[0] even if there are no entries,
accessing possibly uninitialized memory. In that case it doesn't use it
for anything, but at least I find that kind of code worrying.
>>>> + if (vc == cur_vc)
>>>> + continue;
>>>> +
>>>> + dev_err(&priv->client->dev,
>>>> + "rx%u: source with multiple virtual-channels is not supported\n",
>>>> + nport);
>>>> + return -ENODEV;
>>>> + }
>
> ...
>
>>>> + for (i = 0; i < 6; ++i)
>>>> ub960_read(priv, UB960_SR_FPD3_RX_ID(i), &id[i]);
>>>> id[6] = 0;
>>>
>>> Wondering if this magic can be defined.
>>
>> The number of ID registers? Yes, I can add a define.
>
> Yes.
>
> ...
>
> ...
>
>>>> if (ret) {
>>>> if (ret != -EINVAL) {
>>>> - dev_err(dev,
>>>> - "rx%u: failed to read 'ti,strobe-pos': %d\n",
>>>> - nport, ret);
>>>> + dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
>>>> + "ti,strobe-pos", ret);
>>>> return ret;
>>>> }
>>>> } else if (strobe_pos < UB960_MIN_MANUAL_STROBE_POS ||
>>>> @@ -3512,8 +3403,8 @@ ub960_parse_dt_rxport_link_properties(struct ub960_data *priv,
>>>> ret = fwnode_property_read_u32(link_fwnode, "ti,eq-level", &eq_level);
>>>> if (ret) {
>>>> if (ret != -EINVAL) {
>>>> - dev_err(dev, "rx%u: failed to read 'ti,eq-level': %d\n",
>>>> - nport, ret);
>>>> + dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
>>>> + "ti,eq-level", ret);
>>>> return ret;
>>>> }
>>>> } else if (eq_level > UB960_MAX_EQ_LEVEL) {
>>>
>>
>> Hmm, I noticed this one (and the one above) was missing return -EINVAL.
>>
>>> Seems like you may do (in both cases) similar to the above:
>>>
>>> var = 0;
>>> ret = read_u32();
>>> if (ret && ret != -EINVAL) {
>>> // error handling
>>> }
>>> if (var > limit) {
>>> // another error handling
>>> }
>>
>> That's not the same. You'd also need to do:
>>
>> if (!ret) {
>> // handle the retrieved value
>> }
>>
>> which, I think, is not any clearer (perhaps more unclear).
>>
>> What I could do is:
>>
>> if (ret) {
>> if (ret != -EINVAL) {
>> dev_err(dev, "rx%u: failed to read '%s': %d\n", nport,
>> "ti,eq-level", ret);
>> return ret;
>> }
>> } else {
>> if (eq_level > UB960_MAX_EQ_LEVEL) {
>> dev_err(dev, "rx%u: illegal 'ti,eq-level' value: %d\n",
>> nport, eq_level);
>> return -EINVAL;
>> }
>>
>> rxport->eq.manual_eq = true;
>> rxport->eq.manual.eq_level = eq_level;
>> }
>>
>> Maybe the above style makes it clearer, as it clearly splits the "don't have
>> value" and "have value" branches.
>
> Up to you, but this just a good example why I do not like how optional
> properties are handled in a "smart" way.
>
> To me
>
> foo = DEFAULT;
> _property_read_(&foo); // no error checking
>
> is clean, neat, small and good enough solution.
Yes, if you have a default. I don't. I could add a new magic number for
the eq_level which means not-defined and use it as a default, but I
don't usually like default values which are not 0. Here I have the
manual_eq boolean to tell if we're using manual EQ or not.
Tomi
^ permalink raw reply [flat|nested] 16+ messages in thread* Re: [PATCH v9 0/8] i2c-atr and FPDLink
2023-02-17 12:57 ` Tomi Valkeinen
@ 2023-02-17 13:45 ` Andy Shevchenko
2023-03-02 15:52 ` Tomi Valkeinen
0 siblings, 1 reply; 16+ messages in thread
From: Andy Shevchenko @ 2023-02-17 13:45 UTC (permalink / raw)
To: Tomi Valkeinen
Cc: linux-media, devicetree, linux-kernel, linux-i2c, Rob Herring,
Krzysztof Kozlowski, Wolfram Sang, Luca Ceresoli,
Matti Vaittinen, Laurent Pinchart, Mauro Carvalho Chehab,
Peter Rosin, Liam Girdwood, Mark Brown, Sakari Ailus,
Michael Tretter, Shawn Tu, Hans Verkuil, Mike Pagano,
Krzysztof Hałasa, Marek Vasut, Satish Nagireddy
On Fri, Feb 17, 2023 at 02:57:02PM +0200, Tomi Valkeinen wrote:
> On 17/02/2023 13:24, Andy Shevchenko wrote:
> > On Fri, Feb 17, 2023 at 08:57:32AM +0200, Tomi Valkeinen wrote:
> > > On 16/02/2023 17:53, Andy Shevchenko wrote:
> > > > On Thu, Feb 16, 2023 at 04:07:39PM +0200, Tomi Valkeinen wrote:
...
> > > > > struct i2c_board_info ser_info = {
> > > > > - .of_node = to_of_node(rxport->remote_fwnode),
> > > > > - .fwnode = rxport->remote_fwnode,
> > > >
> > > > > + .of_node = to_of_node(rxport->ser.fwnode),
> > > > > + .fwnode = rxport->ser.fwnode,
> > > >
> > > > Why do you need to have both?!
> > >
> > > I didn't debug it, but having only fwnode there will break the probing (no
> > > match).
> >
> > This needs to be investigated. The whole fwnode approach, when we have both
> > fwnode and legacy of_node fields in the same data structure, is that fwnode
> > _OR_ of_node initialization is enough, when both are defined the fwnode
> > should take precedence.
> >
> > If your testing is correct (and I have no doubts) it means we have a serious
> > bug lurking somewhere.
>
> Having both defined or only of_node defined works for me.
But of_node is _legacy_ stuff. We should not really consider this option in the
new code.
> Perhaps the issue is that these drivers only add of_match_table, and thus
> having only .fwnode above is not enough.
No, the code should work with fwnode that carrying DT node or another.
The matching table shouldn't affect this either.
> Looking at i2c_device_match(), i2c_of_match_device() only uses of_node, so
> perhaps I would need CONFIG_ACPI for acpi_driver_match_device to do matching
> with of_node? Although I don't see the acpi code using fwnode, just of_node.
> Well, I have to say I have no idea without spending more time on this.
Again, there is a bug and that bug seems nasty one as it would allow to
work the device in one environment and not in another.
Since it's about I²C board files, I believe that an issue is in I²C core.
> > > > > .platform_data = ser_pdata,
> > > > > };
...
> > > > cur_vc = desc.entry[0].bus.csi2.vc;
> > > >
> > > > > + for (i = 0; i < desc.num_entries; ++i) {
> > > > > + u8 vc = desc.entry[i].bus.csi2.vc;
> > > >
> > > > > + if (i == 0) {
> > > > > + cur_vc = vc;
> > > > > + continue;
> > > > > + }
> > > >
> > > > This is an invariant to the loop, see above.
> > >
> > > Well, the current code handles the case of num_entries == 0. I can change it
> > > as you suggest, and first check if num_entries == 0 and also start the loop
> > > from 1.
> >
> > You may try to compile both variants and see which one gets lets code.
> > I believe it will be mine or they are equivalent in case compiler is clever
> > enough to recognize the invariant.
>
> But your suggestion accesses desc.entry[0] even if there are no entries,
> accessing possibly uninitialized memory. In that case it doesn't use it for
> anything, but at least I find that kind of code worrying.
Yes you probably will need a 0 case to be handled separately. I was and
is not objecting this.
> > > > > + if (vc == cur_vc)
> > > > > + continue;
> > > > > +
> > > > > + dev_err(&priv->client->dev,
> > > > > + "rx%u: source with multiple virtual-channels is not supported\n",
> > > > > + nport);
> > > > > + return -ENODEV;
> > > > > + }
...
> > Up to you, but this just a good example why I do not like how optional
> > properties are handled in a "smart" way.
> >
> > To me
> >
> > foo = DEFAULT;
> > _property_read_(&foo); // no error checking
> >
> > is clean, neat, small and good enough solution.
>
> Yes, if you have a default. I don't.
It can't be true. If you have an optional property you always have a default
even if you are not using it (let's call it special case).
foo_present = property_present();
property_read(&foo_val);
...
if (foo_present) {
// do something with foo_val
}
The boolean variable is needed when the range of the foo_val takes all possible
values of the type (u32?). Otherwise you always can define a magic that will
tell you "okay, this is not in use". Of course having boolean always is also
fine.
> I could add a new magic number for the
> eq_level which means not-defined and use it as a default, but I don't
> usually like default values which are not 0. Here I have the manual_eq
> boolean to tell if we're using manual EQ or not.
Oh, this is similar that I described above.
But as I said, you can keep your initial version, it's up to you and
maintainers to cope with that (uglification).
--
With Best Regards,
Andy Shevchenko
^ permalink raw reply [flat|nested] 16+ messages in thread* Re: [PATCH v9 0/8] i2c-atr and FPDLink
2023-02-17 13:45 ` Andy Shevchenko
@ 2023-03-02 15:52 ` Tomi Valkeinen
2023-03-02 16:16 ` Andy Shevchenko
0 siblings, 1 reply; 16+ messages in thread
From: Tomi Valkeinen @ 2023-03-02 15:52 UTC (permalink / raw)
To: Andy Shevchenko
Cc: linux-media, devicetree, linux-kernel, linux-i2c, Rob Herring,
Krzysztof Kozlowski, Wolfram Sang, Luca Ceresoli,
Matti Vaittinen, Laurent Pinchart, Mauro Carvalho Chehab,
Peter Rosin, Liam Girdwood, Mark Brown, Sakari Ailus,
Michael Tretter, Shawn Tu, Hans Verkuil, Mike Pagano,
Krzysztof Hałasa, Marek Vasut, Satish Nagireddy
On 17/02/2023 15:45, Andy Shevchenko wrote:
> On Fri, Feb 17, 2023 at 02:57:02PM +0200, Tomi Valkeinen wrote:
>> On 17/02/2023 13:24, Andy Shevchenko wrote:
>>> On Fri, Feb 17, 2023 at 08:57:32AM +0200, Tomi Valkeinen wrote:
>>>> On 16/02/2023 17:53, Andy Shevchenko wrote:
>>>>> On Thu, Feb 16, 2023 at 04:07:39PM +0200, Tomi Valkeinen wrote:
>
> ...
>
>>>>>> struct i2c_board_info ser_info = {
>>>>>> - .of_node = to_of_node(rxport->remote_fwnode),
>>>>>> - .fwnode = rxport->remote_fwnode,
>>>>>
>>>>>> + .of_node = to_of_node(rxport->ser.fwnode),
>>>>>> + .fwnode = rxport->ser.fwnode,
>>>>>
>>>>> Why do you need to have both?!
>>>>
>>>> I didn't debug it, but having only fwnode there will break the probing (no
>>>> match).
>>>
>>> This needs to be investigated. The whole fwnode approach, when we have both
>>> fwnode and legacy of_node fields in the same data structure, is that fwnode
>>> _OR_ of_node initialization is enough, when both are defined the fwnode
>>> should take precedence.
>>>
>>> If your testing is correct (and I have no doubts) it means we have a serious
>>> bug lurking somewhere.
>>
>> Having both defined or only of_node defined works for me.
>
> But of_node is _legacy_ stuff. We should not really consider this option in the
> new code.
>
>> Perhaps the issue is that these drivers only add of_match_table, and thus
>> having only .fwnode above is not enough.
>
> No, the code should work with fwnode that carrying DT node or another.
> The matching table shouldn't affect this either.
>
>> Looking at i2c_device_match(), i2c_of_match_device() only uses of_node, so
>> perhaps I would need CONFIG_ACPI for acpi_driver_match_device to do matching
>> with of_node? Although I don't see the acpi code using fwnode, just of_node.
>> Well, I have to say I have no idea without spending more time on this.
>
> Again, there is a bug and that bug seems nasty one as it would allow to
> work the device in one environment and not in another.
>
> Since it's about I²C board files, I believe that an issue is in I²C core.
I don't know if this is related in any way, but I see these when probing:
[ 36.952697] i2c 4-0044: Fixed dependency cycle(s) with /ocp/interconnect@48000000/segment@0/target-module@7c000/i2c@0/deser@3d/links/link@0/serializer/i2c/sensor@21/port/endpoint
[ 36.969268] i2c 4-0044: Fixed dependency cycle(s) with /ocp/interconnect@48000000/segment@0/target-module@7c000/i2c@0/deser@3d/ports/port@0/endpoint
[ 36.983001] i2c 4-0044: Failed to create device link with 4-0044
[ 36.992828] ds90ub953 4-0044: Found ub953 rev/mask 0x20
[ 37.017761] i2c 5-0021: Fixed dependency cycle(s) with /ocp/interconnect@48000000/segment@0/target-module@7c000/i2c@0/deser@3d/links/link@0/serializer/ports/port@0/endpoint
[ 37.033843] i2c 5-0021: Fixed dependency cycle(s) with /ocp/interconnect@48000000/segment@0/target-module@7c000/i2c@0/deser@3d/links/link@0/serializer
[ 37.117492] i2c 4-0045: Fixed dependency cycle(s) with /ocp/interconnect@48000000/segment@0/target-module@7c000/i2c@0/deser@3d/links/link@1/serializer/i2c/sensor@21/port/endpoint
[ 37.134033] i2c 4-0045: Fixed dependency cycle(s) with /ocp/interconnect@48000000/segment@0/target-module@7c000/i2c@0/deser@3d/ports/port@1/endpoint
[ 37.147735] i2c 4-0045: Failed to create device link with 4-0045
[ 37.156097] ds90ub953 4-0045: Found ub953 rev/mask 0x20
[ 37.186584] i2c 6-0021: Fixed dependency cycle(s) with /ocp/interconnect@48000000/segment@0/target-module@7c000/i2c@0/deser@3d/links/link@1/serializer/ports/port@0/endpoint
[ 37.202636] i2c 6-0021: Fixed dependency cycle(s) with /ocp/interconnect@48000000/segment@0/target-module@7c000/i2c@0/deser@3d/links/link@1/serializer
Then again, I see similar warnings/errors for some other devices too, when booting up (TI's DRA76 EVM).
Tomi
^ permalink raw reply [flat|nested] 16+ messages in thread* Re: [PATCH v9 0/8] i2c-atr and FPDLink
2023-03-02 15:52 ` Tomi Valkeinen
@ 2023-03-02 16:16 ` Andy Shevchenko
0 siblings, 0 replies; 16+ messages in thread
From: Andy Shevchenko @ 2023-03-02 16:16 UTC (permalink / raw)
Cc: linux-media, devicetree, linux-kernel, linux-i2c, Rob Herring,
Krzysztof Kozlowski, Wolfram Sang, Luca Ceresoli,
Matti Vaittinen, Laurent Pinchart, Mauro Carvalho Chehab,
Peter Rosin, Liam Girdwood, Mark Brown, Sakari Ailus,
Michael Tretter, Shawn Tu, Hans Verkuil, Mike Pagano,
Krzysztof Hałasa, Marek Vasut, Satish Nagireddy
+Cc: Saravana (for devlink issues)
On Thu, Mar 02, 2023 at 05:52:24PM +0200, Tomi Valkeinen wrote:
> On 17/02/2023 15:45, Andy Shevchenko wrote:
> > On Fri, Feb 17, 2023 at 02:57:02PM +0200, Tomi Valkeinen wrote:
> > > On 17/02/2023 13:24, Andy Shevchenko wrote:
> > > > On Fri, Feb 17, 2023 at 08:57:32AM +0200, Tomi Valkeinen wrote:
> > > > > On 16/02/2023 17:53, Andy Shevchenko wrote:
> > > > > > On Thu, Feb 16, 2023 at 04:07:39PM +0200, Tomi Valkeinen wrote:
...
> > > > > > > struct i2c_board_info ser_info = {
> > > > > > > - .of_node = to_of_node(rxport->remote_fwnode),
> > > > > > > - .fwnode = rxport->remote_fwnode,
> > > > > >
> > > > > > > + .of_node = to_of_node(rxport->ser.fwnode),
> > > > > > > + .fwnode = rxport->ser.fwnode,
> > > > > >
> > > > > > Why do you need to have both?!
> > > > >
> > > > > I didn't debug it, but having only fwnode there will break the probing (no
> > > > > match).
> > > >
> > > > This needs to be investigated. The whole fwnode approach, when we have both
> > > > fwnode and legacy of_node fields in the same data structure, is that fwnode
> > > > _OR_ of_node initialization is enough, when both are defined the fwnode
> > > > should take precedence.
> > > >
> > > > If your testing is correct (and I have no doubts) it means we have a serious
> > > > bug lurking somewhere.
> > >
> > > Having both defined or only of_node defined works for me.
> >
> > But of_node is _legacy_ stuff. We should not really consider this option in the
> > new code.
> >
> > > Perhaps the issue is that these drivers only add of_match_table, and thus
> > > having only .fwnode above is not enough.
> >
> > No, the code should work with fwnode that carrying DT node or another.
> > The matching table shouldn't affect this either.
> >
> > > Looking at i2c_device_match(), i2c_of_match_device() only uses of_node, so
> > > perhaps I would need CONFIG_ACPI for acpi_driver_match_device to do matching
> > > with of_node? Although I don't see the acpi code using fwnode, just of_node.
> > > Well, I have to say I have no idea without spending more time on this.
> >
> > Again, there is a bug and that bug seems nasty one as it would allow to
> > work the device in one environment and not in another.
> >
> > Since it's about I²C board files, I believe that an issue is in I²C core.
>
> I don't know if this is related in any way, but I see these when probing:
I believe this is for devlink (Saravana Cc'ed).
> [ 36.952697] i2c 4-0044: Fixed dependency cycle(s) with /ocp/interconnect@48000000/segment@0/target-module@7c000/i2c@0/deser@3d/links/link@0/serializer/i2c/sensor@21/port/endpoint
> [ 36.969268] i2c 4-0044: Fixed dependency cycle(s) with /ocp/interconnect@48000000/segment@0/target-module@7c000/i2c@0/deser@3d/ports/port@0/endpoint
> [ 36.983001] i2c 4-0044: Failed to create device link with 4-0044
> [ 36.992828] ds90ub953 4-0044: Found ub953 rev/mask 0x20
> [ 37.017761] i2c 5-0021: Fixed dependency cycle(s) with /ocp/interconnect@48000000/segment@0/target-module@7c000/i2c@0/deser@3d/links/link@0/serializer/ports/port@0/endpoint
> [ 37.033843] i2c 5-0021: Fixed dependency cycle(s) with /ocp/interconnect@48000000/segment@0/target-module@7c000/i2c@0/deser@3d/links/link@0/serializer
> [ 37.117492] i2c 4-0045: Fixed dependency cycle(s) with /ocp/interconnect@48000000/segment@0/target-module@7c000/i2c@0/deser@3d/links/link@1/serializer/i2c/sensor@21/port/endpoint
> [ 37.134033] i2c 4-0045: Fixed dependency cycle(s) with /ocp/interconnect@48000000/segment@0/target-module@7c000/i2c@0/deser@3d/ports/port@1/endpoint
> [ 37.147735] i2c 4-0045: Failed to create device link with 4-0045
> [ 37.156097] ds90ub953 4-0045: Found ub953 rev/mask 0x20
> [ 37.186584] i2c 6-0021: Fixed dependency cycle(s) with /ocp/interconnect@48000000/segment@0/target-module@7c000/i2c@0/deser@3d/links/link@1/serializer/ports/port@0/endpoint
> [ 37.202636] i2c 6-0021: Fixed dependency cycle(s) with /ocp/interconnect@48000000/segment@0/target-module@7c000/i2c@0/deser@3d/links/link@1/serializer
>
> Then again, I see similar warnings/errors for some other devices too, when booting up (TI's DRA76 EVM).
--
With Best Regards,
Andy Shevchenko
^ permalink raw reply [flat|nested] 16+ messages in thread
end of thread, other threads:[~2023-03-02 16:24 UTC | newest]
Thread overview: 16+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-02-16 14:07 [PATCH v9 0/8] i2c-atr and FPDLink Tomi Valkeinen
2023-02-16 14:07 ` [PATCH v9 1/8] i2c: add I2C Address Translator (ATR) support Tomi Valkeinen
2023-02-16 14:07 ` [PATCH v9 2/8] media: subdev: Split V4L2_SUBDEV_ROUTING_NO_STREAM_MIX Tomi Valkeinen
2023-02-16 14:07 ` [PATCH v9 3/8] dt-bindings: media: add TI DS90UB913 FPD-Link III Serializer Tomi Valkeinen
2023-02-16 14:07 ` [PATCH v9 4/8] dt-bindings: media: add TI DS90UB953 " Tomi Valkeinen
2023-02-16 14:07 ` [PATCH v9 5/8] dt-bindings: media: add TI DS90UB960 FPD-Link III Deserializer Tomi Valkeinen
2023-02-16 14:07 ` [PATCH v9 6/8] media: i2c: add DS90UB960 driver Tomi Valkeinen
2023-02-16 14:07 ` [PATCH v9 7/8] media: i2c: add DS90UB913 driver Tomi Valkeinen
2023-02-16 14:07 ` [PATCH v9 8/8] media: i2c: add DS90UB953 driver Tomi Valkeinen
2023-02-16 15:53 ` [PATCH v9 0/8] i2c-atr and FPDLink Andy Shevchenko
2023-02-17 6:57 ` Tomi Valkeinen
2023-02-17 11:24 ` Andy Shevchenko
2023-02-17 12:57 ` Tomi Valkeinen
2023-02-17 13:45 ` Andy Shevchenko
2023-03-02 15:52 ` Tomi Valkeinen
2023-03-02 16:16 ` Andy Shevchenko
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