* [PATCH v5 1/5] iio: sx9310: Add frequency in read_avail
2021-12-08 0:43 [PATCH v5 0/5] Expand Semtech SAR Sensors support Gwendal Grignou
@ 2021-12-08 0:43 ` Gwendal Grignou
2021-12-08 0:43 ` [PATCH v5 2/5] iio: sx9310: Extract common Semtech sensor logic Gwendal Grignou
` (3 subsequent siblings)
4 siblings, 0 replies; 15+ messages in thread
From: Gwendal Grignou @ 2021-12-08 0:43 UTC (permalink / raw)
To: jic23, lars, swboyd
Cc: andy.shevchenko, linux-iio, devicetree, Gwendal Grignou
Instead of using IIO_DEV_ATTR_SAMP_FREQ_AVAIL sysfs attribute,
add a _FREQ case in read_avail() to display the frequency table.
No change to |sampling_frequency_available| was observed.
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
---
No changes in v5
No changes in v4
No changes in v3
New in v2.
drivers/iio/proximity/sx9310.c | 33 +++++++--------------------------
1 file changed, 7 insertions(+), 26 deletions(-)
diff --git a/drivers/iio/proximity/sx9310.c b/drivers/iio/proximity/sx9310.c
index a3fdb59b06d220..1647268b6471f1 100644
--- a/drivers/iio/proximity/sx9310.c
+++ b/drivers/iio/proximity/sx9310.c
@@ -196,6 +196,8 @@ static const struct iio_event_spec sx9310_events[] = {
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
.info_mask_separate_available = \
BIT(IIO_CHAN_INFO_HARDWAREGAIN), \
+ .info_mask_shared_by_all_available = \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ), \
.indexed = 1, \
.channel = idx, \
.extend_name = name, \
@@ -251,22 +253,6 @@ static const unsigned int sx9310_scan_period_table[] = {
400, 600, 800, 1000, 2000, 3000, 4000, 5000,
};
-static ssize_t sx9310_show_samp_freq_avail(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- size_t len = 0;
- int i;
-
- for (i = 0; i < ARRAY_SIZE(sx9310_samp_freq_table); i++)
- len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%d ",
- sx9310_samp_freq_table[i].val,
- sx9310_samp_freq_table[i].val2);
- buf[len - 1] = '\n';
- return len;
-}
-static IIO_DEV_ATTR_SAMP_FREQ_AVAIL(sx9310_show_samp_freq_avail);
-
static const struct regmap_range sx9310_writable_reg_ranges[] = {
regmap_reg_range(SX9310_REG_IRQ_MSK, SX9310_REG_IRQ_FUNC),
regmap_reg_range(SX9310_REG_PROX_CTRL0, SX9310_REG_PROX_CTRL19),
@@ -562,6 +548,11 @@ static int sx9310_read_avail(struct iio_dev *indio_dev,
*length = ARRAY_SIZE(sx9310_gain_vals);
*vals = sx9310_gain_vals;
return IIO_AVAIL_LIST;
+ case IIO_CHAN_INFO_SAMP_FREQ:
+ *type = IIO_VAL_INT_PLUS_MICRO;
+ *length = ARRAY_SIZE(sx9310_samp_freq_table) * 2;
+ *vals = (int *)sx9310_samp_freq_table;
+ return IIO_AVAIL_LIST;
}
return -EINVAL;
@@ -1031,17 +1022,7 @@ static int sx9310_write_event_config(struct iio_dev *indio_dev,
return ret;
}
-static struct attribute *sx9310_attributes[] = {
- &iio_dev_attr_sampling_frequency_available.dev_attr.attr,
- NULL
-};
-
-static const struct attribute_group sx9310_attribute_group = {
- .attrs = sx9310_attributes,
-};
-
static const struct iio_info sx9310_info = {
- .attrs = &sx9310_attribute_group,
.read_raw = sx9310_read_raw,
.read_avail = sx9310_read_avail,
.read_event_value = sx9310_read_event_val,
--
2.34.1.400.ga245620fadb-goog
^ permalink raw reply related [flat|nested] 15+ messages in thread* [PATCH v5 2/5] iio: sx9310: Extract common Semtech sensor logic
2021-12-08 0:43 [PATCH v5 0/5] Expand Semtech SAR Sensors support Gwendal Grignou
2021-12-08 0:43 ` [PATCH v5 1/5] iio: sx9310: Add frequency in read_avail Gwendal Grignou
@ 2021-12-08 0:43 ` Gwendal Grignou
2021-12-08 0:43 ` [PATCH v5 3/5] iio: proximity: Add SX9324 support Gwendal Grignou
` (2 subsequent siblings)
4 siblings, 0 replies; 15+ messages in thread
From: Gwendal Grignou @ 2021-12-08 0:43 UTC (permalink / raw)
To: jic23, lars, swboyd
Cc: andy.shevchenko, linux-iio, devicetree, Gwendal Grignou
Before adding new Semtech sensors, move common logic to all Semtech SAR
sensor in its own file:
- interface with IIO subsystem,
- interrupt management,
- channel access conrol,
- event processing.
The change adds a bidirectional interface between sx93xx and sx_common.
The change is quite mechanical, as the impacted functions are moved
and renamed.
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
---
Changes in v5:
- Add offset to process irq status register
- Fix includes with iwyu
- Fix long line
- Use dev_err_probe(), remove dev_err() in whoami routine.
Changes in v4:
- Fix credit in sx_common.c
- Use chip_info instead of info in common data structure.
- Remove unnecessary includes in sx_common.c
- Remove WHOAMI register values from sx_common.h
- Fix kerneldoc comments.
Changes in v3:
- No line change in Makefile
- Leave interrupt.h include, needed at suspend/resume.
Changes in v2:
- Add Kconfig/Makefile that were in the wrong patch
- Define a better interface between common code and driver code
- Move back read_avail() to driver code:
As it now contains frequency table, it will differ from sensor to
sensor.
- Check whoami and set driver name back in the driver code.
- Use a common probe routine.
- Fix kernel doc comments.
drivers/iio/proximity/Kconfig | 4 +
drivers/iio/proximity/Makefile | 1 +
drivers/iio/proximity/sx9310.c | 685 +++++-------------------------
drivers/iio/proximity/sx_common.c | 576 +++++++++++++++++++++++++
drivers/iio/proximity/sx_common.h | 163 +++++++
5 files changed, 842 insertions(+), 587 deletions(-)
create mode 100644 drivers/iio/proximity/sx_common.c
create mode 100644 drivers/iio/proximity/sx_common.h
diff --git a/drivers/iio/proximity/Kconfig b/drivers/iio/proximity/Kconfig
index 7c7203ca3ac638..e88fc373c2c903 100644
--- a/drivers/iio/proximity/Kconfig
+++ b/drivers/iio/proximity/Kconfig
@@ -112,11 +112,15 @@ config SRF04
To compile this driver as a module, choose M here: the
module will be called srf04.
+config SX_COMMON
+ tristate
+
config SX9310
tristate "SX9310/SX9311 Semtech proximity sensor"
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
select REGMAP_I2C
+ select SX_COMMON
depends on I2C
help
Say Y here to build a driver for Semtech's SX9310/SX9311 capacitive
diff --git a/drivers/iio/proximity/Makefile b/drivers/iio/proximity/Makefile
index cbdac09433eb51..2577fbce4144e5 100644
--- a/drivers/iio/proximity/Makefile
+++ b/drivers/iio/proximity/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_RFD77402) += rfd77402.o
obj-$(CONFIG_SRF04) += srf04.o
obj-$(CONFIG_SRF08) += srf08.o
obj-$(CONFIG_SX9310) += sx9310.o
+obj-$(CONFIG_SX_COMMON) += sx_common.o
obj-$(CONFIG_SX9500) += sx9500.o
obj-$(CONFIG_VCNL3020) += vcnl3020.o
obj-$(CONFIG_VL53L0X_I2C) += vl53l0x-i2c.o
diff --git a/drivers/iio/proximity/sx9310.c b/drivers/iio/proximity/sx9310.c
index 1647268b6471f1..81878dd79a52f2 100644
--- a/drivers/iio/proximity/sx9310.c
+++ b/drivers/iio/proximity/sx9310.c
@@ -10,11 +10,10 @@
* and in January 2020 by Daniel Campello <campello@chromium.org>.
*/
-#include <linux/acpi.h>
#include <linux/bitfield.h>
#include <linux/delay.h>
#include <linux/i2c.h>
-#include <linux/irq.h>
+#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/log2.h>
#include <linux/mod_devicetable.h>
@@ -22,19 +21,12 @@
#include <linux/pm.h>
#include <linux/property.h>
#include <linux/regmap.h>
-#include <linux/regulator/consumer.h>
-#include <linux/slab.h>
-
-#include <linux/iio/buffer.h>
-#include <linux/iio/events.h>
#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-#include <linux/iio/trigger.h>
-#include <linux/iio/triggered_buffer.h>
-#include <linux/iio/trigger_consumer.h>
+
+#include "sx_common.h"
/* Register definitions. */
-#define SX9310_REG_IRQ_SRC 0x00
+#define SX9310_REG_IRQ_SRC SX_COMMON_REG_IRQ_SRC
#define SX9310_REG_STAT0 0x01
#define SX9310_REG_STAT1 0x02
#define SX9310_REG_STAT1_COMPSTAT_MASK GENMASK(3, 0)
@@ -135,83 +127,36 @@
#define SX9310_WHOAMI_VALUE 0x01
#define SX9311_WHOAMI_VALUE 0x02
#define SX9310_REG_RESET 0x7f
-#define SX9310_SOFT_RESET 0xde
/* 4 hardware channels, as defined in STAT0: COMB, CS2, CS1 and CS0. */
#define SX9310_NUM_CHANNELS 4
-static_assert(SX9310_NUM_CHANNELS < BITS_PER_LONG);
-
-struct sx9310_data {
- /* Serialize access to registers and channel configuration */
- struct mutex mutex;
- struct i2c_client *client;
- struct iio_trigger *trig;
- struct regmap *regmap;
- struct regulator_bulk_data supplies[2];
- /*
- * Last reading of the proximity status for each channel.
- * We only send an event to user space when this changes.
- */
- unsigned long chan_prox_stat;
- bool trigger_enabled;
- /* Ensure correct alignment of timestamp when present. */
- struct {
- __be16 channels[SX9310_NUM_CHANNELS];
- s64 ts __aligned(8);
- } buffer;
- /* Remember enabled channels and sample rate during suspend. */
- unsigned int suspend_ctrl0;
- struct completion completion;
- unsigned long chan_read;
- unsigned long chan_event;
- unsigned int whoami;
-};
-
-static const struct iio_event_spec sx9310_events[] = {
- {
- .type = IIO_EV_TYPE_THRESH,
- .dir = IIO_EV_DIR_RISING,
- .mask_shared_by_all = BIT(IIO_EV_INFO_PERIOD),
- },
- {
- .type = IIO_EV_TYPE_THRESH,
- .dir = IIO_EV_DIR_FALLING,
- .mask_shared_by_all = BIT(IIO_EV_INFO_PERIOD),
- },
- {
- .type = IIO_EV_TYPE_THRESH,
- .dir = IIO_EV_DIR_EITHER,
- .mask_separate = BIT(IIO_EV_INFO_ENABLE) |
- BIT(IIO_EV_INFO_HYSTERESIS) |
- BIT(IIO_EV_INFO_VALUE),
- },
-};
-
-#define SX9310_NAMED_CHANNEL(idx, name) \
- { \
- .type = IIO_PROXIMITY, \
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
- BIT(IIO_CHAN_INFO_HARDWAREGAIN), \
- .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
- .info_mask_separate_available = \
- BIT(IIO_CHAN_INFO_HARDWAREGAIN), \
- .info_mask_shared_by_all_available = \
- BIT(IIO_CHAN_INFO_SAMP_FREQ), \
- .indexed = 1, \
- .channel = idx, \
- .extend_name = name, \
- .address = SX9310_REG_DIFF_MSB, \
- .event_spec = sx9310_events, \
- .num_event_specs = ARRAY_SIZE(sx9310_events), \
- .scan_index = idx, \
- .scan_type = { \
- .sign = 's', \
- .realbits = 12, \
- .storagebits = 16, \
- .endianness = IIO_BE, \
- }, \
- }
+static_assert(SX9310_NUM_CHANNELS <= SX_COMMON_MAX_NUM_CHANNELS);
+
+#define SX9310_NAMED_CHANNEL(idx, name) \
+{ \
+ .type = IIO_PROXIMITY, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+ BIT(IIO_CHAN_INFO_HARDWAREGAIN), \
+ .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
+ .info_mask_separate_available = \
+ BIT(IIO_CHAN_INFO_HARDWAREGAIN), \
+ .info_mask_shared_by_all_available = \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ), \
+ .indexed = 1, \
+ .channel = idx, \
+ .extend_name = name, \
+ .address = SX9310_REG_DIFF_MSB, \
+ .event_spec = sx_common_events, \
+ .num_event_specs = ARRAY_SIZE(sx_common_events), \
+ .scan_index = idx, \
+ .scan_type = { \
+ .sign = 's', \
+ .realbits = 12, \
+ .storagebits = 16, \
+ .endianness = IIO_BE, \
+ }, \
+}
#define SX9310_CHANNEL(idx) SX9310_NAMED_CHANNEL(idx, NULL)
static const struct iio_chan_spec sx9310_channels[] = {
@@ -306,64 +251,7 @@ static const struct regmap_config sx9310_regmap_config = {
.volatile_table = &sx9310_volatile_regs,
};
-static int sx9310_update_chan_en(struct sx9310_data *data,
- unsigned long chan_read,
- unsigned long chan_event)
-{
- int ret;
- unsigned long channels = chan_read | chan_event;
-
- if ((data->chan_read | data->chan_event) != channels) {
- ret = regmap_update_bits(data->regmap, SX9310_REG_PROX_CTRL0,
- SX9310_REG_PROX_CTRL0_SENSOREN_MASK,
- channels);
- if (ret)
- return ret;
- }
- data->chan_read = chan_read;
- data->chan_event = chan_event;
- return 0;
-}
-
-static int sx9310_get_read_channel(struct sx9310_data *data, int channel)
-{
- return sx9310_update_chan_en(data, data->chan_read | BIT(channel),
- data->chan_event);
-}
-
-static int sx9310_put_read_channel(struct sx9310_data *data, int channel)
-{
- return sx9310_update_chan_en(data, data->chan_read & ~BIT(channel),
- data->chan_event);
-}
-
-static int sx9310_get_event_channel(struct sx9310_data *data, int channel)
-{
- return sx9310_update_chan_en(data, data->chan_read,
- data->chan_event | BIT(channel));
-}
-
-static int sx9310_put_event_channel(struct sx9310_data *data, int channel)
-{
- return sx9310_update_chan_en(data, data->chan_read,
- data->chan_event & ~BIT(channel));
-}
-
-static int sx9310_enable_irq(struct sx9310_data *data, unsigned int irq)
-{
- if (!data->client->irq)
- return 0;
- return regmap_update_bits(data->regmap, SX9310_REG_IRQ_MSK, irq, irq);
-}
-
-static int sx9310_disable_irq(struct sx9310_data *data, unsigned int irq)
-{
- if (!data->client->irq)
- return 0;
- return regmap_update_bits(data->regmap, SX9310_REG_IRQ_MSK, irq, 0);
-}
-
-static int sx9310_read_prox_data(struct sx9310_data *data,
+static int sx9310_read_prox_data(struct sx_common_data *data,
const struct iio_chan_spec *chan, __be16 *val)
{
int ret;
@@ -379,7 +267,7 @@ static int sx9310_read_prox_data(struct sx9310_data *data,
* If we have no interrupt support, we have to wait for a scan period
* after enabling a channel to get a result.
*/
-static int sx9310_wait_for_sample(struct sx9310_data *data)
+static int sx9310_wait_for_sample(struct sx_common_data *data)
{
int ret;
unsigned int val;
@@ -395,66 +283,7 @@ static int sx9310_wait_for_sample(struct sx9310_data *data)
return 0;
}
-static int sx9310_read_proximity(struct sx9310_data *data,
- const struct iio_chan_spec *chan, int *val)
-{
- int ret;
- __be16 rawval;
-
- mutex_lock(&data->mutex);
-
- ret = sx9310_get_read_channel(data, chan->channel);
- if (ret)
- goto out;
-
- ret = sx9310_enable_irq(data, SX9310_CONVDONE_IRQ);
- if (ret)
- goto out_put_channel;
-
- mutex_unlock(&data->mutex);
-
- if (data->client->irq) {
- ret = wait_for_completion_interruptible(&data->completion);
- reinit_completion(&data->completion);
- } else {
- ret = sx9310_wait_for_sample(data);
- }
-
- mutex_lock(&data->mutex);
-
- if (ret)
- goto out_disable_irq;
-
- ret = sx9310_read_prox_data(data, chan, &rawval);
- if (ret)
- goto out_disable_irq;
-
- *val = sign_extend32(be16_to_cpu(rawval),
- chan->address == SX9310_REG_DIFF_MSB ? 11 : 15);
-
- ret = sx9310_disable_irq(data, SX9310_CONVDONE_IRQ);
- if (ret)
- goto out_put_channel;
-
- ret = sx9310_put_read_channel(data, chan->channel);
- if (ret)
- goto out;
-
- mutex_unlock(&data->mutex);
-
- return IIO_VAL_INT;
-
-out_disable_irq:
- sx9310_disable_irq(data, SX9310_CONVDONE_IRQ);
-out_put_channel:
- sx9310_put_read_channel(data, chan->channel);
-out:
- mutex_unlock(&data->mutex);
-
- return ret;
-}
-
-static int sx9310_read_gain(struct sx9310_data *data,
+static int sx9310_read_gain(struct sx_common_data *data,
const struct iio_chan_spec *chan, int *val)
{
unsigned int regval, gain;
@@ -482,7 +311,7 @@ static int sx9310_read_gain(struct sx9310_data *data,
return IIO_VAL_INT;
}
-static int sx9310_read_samp_freq(struct sx9310_data *data, int *val, int *val2)
+static int sx9310_read_samp_freq(struct sx_common_data *data, int *val, int *val2)
{
unsigned int regval;
int ret;
@@ -502,7 +331,7 @@ static int sx9310_read_raw(struct iio_dev *indio_dev,
const struct iio_chan_spec *chan, int *val,
int *val2, long mask)
{
- struct sx9310_data *data = iio_priv(indio_dev);
+ struct sx_common_data *data = iio_priv(indio_dev);
int ret;
if (chan->type != IIO_PROXIMITY)
@@ -514,7 +343,7 @@ static int sx9310_read_raw(struct iio_dev *indio_dev,
if (ret)
return ret;
- ret = sx9310_read_proximity(data, chan, val);
+ ret = sx_common_read_proximity(data, chan, val);
iio_device_release_direct_mode(indio_dev);
return ret;
case IIO_CHAN_INFO_HARDWAREGAIN:
@@ -577,7 +406,7 @@ static int sx9310_get_thresh_reg(unsigned int channel)
return -EINVAL;
}
-static int sx9310_read_thresh(struct sx9310_data *data,
+static int sx9310_read_thresh(struct sx_common_data *data,
const struct iio_chan_spec *chan, int *val)
{
unsigned int reg;
@@ -600,7 +429,7 @@ static int sx9310_read_thresh(struct sx9310_data *data,
return IIO_VAL_INT;
}
-static int sx9310_read_hysteresis(struct sx9310_data *data,
+static int sx9310_read_hysteresis(struct sx_common_data *data,
const struct iio_chan_spec *chan, int *val)
{
unsigned int regval, pthresh;
@@ -624,7 +453,7 @@ static int sx9310_read_hysteresis(struct sx9310_data *data,
return IIO_VAL_INT;
}
-static int sx9310_read_far_debounce(struct sx9310_data *data, int *val)
+static int sx9310_read_far_debounce(struct sx_common_data *data, int *val)
{
unsigned int regval;
int ret;
@@ -642,7 +471,7 @@ static int sx9310_read_far_debounce(struct sx9310_data *data, int *val)
return IIO_VAL_INT;
}
-static int sx9310_read_close_debounce(struct sx9310_data *data, int *val)
+static int sx9310_read_close_debounce(struct sx_common_data *data, int *val)
{
unsigned int regval;
int ret;
@@ -666,7 +495,7 @@ static int sx9310_read_event_val(struct iio_dev *indio_dev,
enum iio_event_direction dir,
enum iio_event_info info, int *val, int *val2)
{
- struct sx9310_data *data = iio_priv(indio_dev);
+ struct sx_common_data *data = iio_priv(indio_dev);
if (chan->type != IIO_PROXIMITY)
return -EINVAL;
@@ -690,7 +519,7 @@ static int sx9310_read_event_val(struct iio_dev *indio_dev,
}
}
-static int sx9310_write_thresh(struct sx9310_data *data,
+static int sx9310_write_thresh(struct sx_common_data *data,
const struct iio_chan_spec *chan, int val)
{
unsigned int reg;
@@ -720,7 +549,7 @@ static int sx9310_write_thresh(struct sx9310_data *data,
return ret;
}
-static int sx9310_write_hysteresis(struct sx9310_data *data,
+static int sx9310_write_hysteresis(struct sx_common_data *data,
const struct iio_chan_spec *chan, int _val)
{
unsigned int hyst, val = _val;
@@ -750,7 +579,7 @@ static int sx9310_write_hysteresis(struct sx9310_data *data,
return ret;
}
-static int sx9310_write_far_debounce(struct sx9310_data *data, int val)
+static int sx9310_write_far_debounce(struct sx_common_data *data, int val)
{
int ret;
unsigned int regval;
@@ -771,7 +600,7 @@ static int sx9310_write_far_debounce(struct sx9310_data *data, int val)
return ret;
}
-static int sx9310_write_close_debounce(struct sx9310_data *data, int val)
+static int sx9310_write_close_debounce(struct sx_common_data *data, int val)
{
int ret;
unsigned int regval;
@@ -798,7 +627,7 @@ static int sx9310_write_event_val(struct iio_dev *indio_dev,
enum iio_event_direction dir,
enum iio_event_info info, int val, int val2)
{
- struct sx9310_data *data = iio_priv(indio_dev);
+ struct sx_common_data *data = iio_priv(indio_dev);
if (chan->type != IIO_PROXIMITY)
return -EINVAL;
@@ -822,7 +651,7 @@ static int sx9310_write_event_val(struct iio_dev *indio_dev,
}
}
-static int sx9310_set_samp_freq(struct sx9310_data *data, int val, int val2)
+static int sx9310_set_samp_freq(struct sx_common_data *data, int val, int val2)
{
int i, ret;
@@ -846,8 +675,8 @@ static int sx9310_set_samp_freq(struct sx9310_data *data, int val, int val2)
return ret;
}
-static int sx9310_write_gain(struct sx9310_data *data,
- const struct iio_chan_spec *chan, int val)
+static int sx9310_write_gain(struct sx_common_data *data,
+ const struct iio_chan_spec *chan, int val)
{
unsigned int gain, mask;
int ret;
@@ -881,7 +710,7 @@ static int sx9310_write_raw(struct iio_dev *indio_dev,
const struct iio_chan_spec *chan, int val, int val2,
long mask)
{
- struct sx9310_data *data = iio_priv(indio_dev);
+ struct sx_common_data *data = iio_priv(indio_dev);
if (chan->type != IIO_PROXIMITY)
return -EINVAL;
@@ -896,238 +725,7 @@ static int sx9310_write_raw(struct iio_dev *indio_dev,
return -EINVAL;
}
-static irqreturn_t sx9310_irq_handler(int irq, void *private)
-{
- struct iio_dev *indio_dev = private;
- struct sx9310_data *data = iio_priv(indio_dev);
-
- if (data->trigger_enabled)
- iio_trigger_poll(data->trig);
-
- /*
- * Even if no event is enabled, we need to wake the thread to clear the
- * interrupt state by reading SX9310_REG_IRQ_SRC.
- * It is not possible to do that here because regmap_read takes a mutex.
- */
- return IRQ_WAKE_THREAD;
-}
-
-static void sx9310_push_events(struct iio_dev *indio_dev)
-{
- int ret;
- unsigned int val, chan;
- struct sx9310_data *data = iio_priv(indio_dev);
- s64 timestamp = iio_get_time_ns(indio_dev);
- unsigned long prox_changed;
-
- /* Read proximity state on all channels */
- ret = regmap_read(data->regmap, SX9310_REG_STAT0, &val);
- if (ret) {
- dev_err(&data->client->dev, "i2c transfer error in irq\n");
- return;
- }
-
- /*
- * Only iterate over channels with changes on proximity status that have
- * events enabled.
- */
- prox_changed = (data->chan_prox_stat ^ val) & data->chan_event;
-
- for_each_set_bit(chan, &prox_changed, SX9310_NUM_CHANNELS) {
- int dir;
- u64 ev;
-
- dir = (val & BIT(chan)) ? IIO_EV_DIR_FALLING : IIO_EV_DIR_RISING;
- ev = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, chan,
- IIO_EV_TYPE_THRESH, dir);
-
- iio_push_event(indio_dev, ev, timestamp);
- }
- data->chan_prox_stat = val;
-}
-
-static irqreturn_t sx9310_irq_thread_handler(int irq, void *private)
-{
- struct iio_dev *indio_dev = private;
- struct sx9310_data *data = iio_priv(indio_dev);
- int ret;
- unsigned int val;
-
- mutex_lock(&data->mutex);
-
- ret = regmap_read(data->regmap, SX9310_REG_IRQ_SRC, &val);
- if (ret) {
- dev_err(&data->client->dev, "i2c transfer error in irq\n");
- goto out;
- }
-
- if (val & (SX9310_FAR_IRQ | SX9310_CLOSE_IRQ))
- sx9310_push_events(indio_dev);
-
- if (val & SX9310_CONVDONE_IRQ)
- complete(&data->completion);
-
-out:
- mutex_unlock(&data->mutex);
-
- return IRQ_HANDLED;
-}
-
-static int sx9310_read_event_config(struct iio_dev *indio_dev,
- const struct iio_chan_spec *chan,
- enum iio_event_type type,
- enum iio_event_direction dir)
-{
- struct sx9310_data *data = iio_priv(indio_dev);
-
- return !!(data->chan_event & BIT(chan->channel));
-}
-
-static int sx9310_write_event_config(struct iio_dev *indio_dev,
- const struct iio_chan_spec *chan,
- enum iio_event_type type,
- enum iio_event_direction dir, int state)
-{
- struct sx9310_data *data = iio_priv(indio_dev);
- unsigned int eventirq = SX9310_FAR_IRQ | SX9310_CLOSE_IRQ;
- int ret;
-
- /* If the state hasn't changed, there's nothing to do. */
- if (!!(data->chan_event & BIT(chan->channel)) == state)
- return 0;
-
- mutex_lock(&data->mutex);
- if (state) {
- ret = sx9310_get_event_channel(data, chan->channel);
- if (ret)
- goto out_unlock;
- if (!(data->chan_event & ~BIT(chan->channel))) {
- ret = sx9310_enable_irq(data, eventirq);
- if (ret)
- sx9310_put_event_channel(data, chan->channel);
- }
- } else {
- ret = sx9310_put_event_channel(data, chan->channel);
- if (ret)
- goto out_unlock;
- if (!data->chan_event) {
- ret = sx9310_disable_irq(data, eventirq);
- if (ret)
- sx9310_get_event_channel(data, chan->channel);
- }
- }
-
-out_unlock:
- mutex_unlock(&data->mutex);
- return ret;
-}
-
-static const struct iio_info sx9310_info = {
- .read_raw = sx9310_read_raw,
- .read_avail = sx9310_read_avail,
- .read_event_value = sx9310_read_event_val,
- .write_event_value = sx9310_write_event_val,
- .write_raw = sx9310_write_raw,
- .read_event_config = sx9310_read_event_config,
- .write_event_config = sx9310_write_event_config,
-};
-
-static int sx9310_set_trigger_state(struct iio_trigger *trig, bool state)
-{
- struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
- struct sx9310_data *data = iio_priv(indio_dev);
- int ret = 0;
-
- mutex_lock(&data->mutex);
-
- if (state)
- ret = sx9310_enable_irq(data, SX9310_CONVDONE_IRQ);
- else if (!data->chan_read)
- ret = sx9310_disable_irq(data, SX9310_CONVDONE_IRQ);
- if (ret)
- goto out;
-
- data->trigger_enabled = state;
-
-out:
- mutex_unlock(&data->mutex);
-
- return ret;
-}
-
-static const struct iio_trigger_ops sx9310_trigger_ops = {
- .set_trigger_state = sx9310_set_trigger_state,
-};
-
-static irqreturn_t sx9310_trigger_handler(int irq, void *private)
-{
- struct iio_poll_func *pf = private;
- struct iio_dev *indio_dev = pf->indio_dev;
- struct sx9310_data *data = iio_priv(indio_dev);
- __be16 val;
- int bit, ret, i = 0;
-
- mutex_lock(&data->mutex);
-
- for_each_set_bit(bit, indio_dev->active_scan_mask,
- indio_dev->masklength) {
- ret = sx9310_read_prox_data(data, &indio_dev->channels[bit],
- &val);
- if (ret)
- goto out;
-
- data->buffer.channels[i++] = val;
- }
-
- iio_push_to_buffers_with_timestamp(indio_dev, &data->buffer,
- pf->timestamp);
-
-out:
- mutex_unlock(&data->mutex);
-
- iio_trigger_notify_done(indio_dev->trig);
-
- return IRQ_HANDLED;
-}
-
-static int sx9310_buffer_preenable(struct iio_dev *indio_dev)
-{
- struct sx9310_data *data = iio_priv(indio_dev);
- unsigned long channels = 0;
- int bit, ret;
-
- mutex_lock(&data->mutex);
- for_each_set_bit(bit, indio_dev->active_scan_mask,
- indio_dev->masklength)
- __set_bit(indio_dev->channels[bit].channel, &channels);
-
- ret = sx9310_update_chan_en(data, channels, data->chan_event);
- mutex_unlock(&data->mutex);
- return ret;
-}
-
-static int sx9310_buffer_postdisable(struct iio_dev *indio_dev)
-{
- struct sx9310_data *data = iio_priv(indio_dev);
- int ret;
-
- mutex_lock(&data->mutex);
- ret = sx9310_update_chan_en(data, 0, data->chan_event);
- mutex_unlock(&data->mutex);
- return ret;
-}
-
-static const struct iio_buffer_setup_ops sx9310_buffer_setup_ops = {
- .preenable = sx9310_buffer_preenable,
- .postdisable = sx9310_buffer_postdisable,
-};
-
-struct sx9310_reg_default {
- u8 reg;
- u8 def;
-};
-
-static const struct sx9310_reg_default sx9310_default_regs[] = {
+static const struct sx_common_reg_default sx9310_default_regs[] = {
{ SX9310_REG_IRQ_MSK, 0x00 },
{ SX9310_REG_IRQ_FUNC, 0x00 },
/*
@@ -1172,7 +770,7 @@ static const struct sx9310_reg_default sx9310_default_regs[] = {
/* Activate all channels and perform an initial compensation. */
static int sx9310_init_compensation(struct iio_dev *indio_dev)
{
- struct sx9310_data *data = iio_priv(indio_dev);
+ struct sx_common_data *data = iio_priv(indio_dev);
int ret;
unsigned int val;
unsigned int ctrl0;
@@ -1202,9 +800,9 @@ static int sx9310_init_compensation(struct iio_dev *indio_dev)
return ret;
}
-static const struct sx9310_reg_default *
+static const struct sx_common_reg_default *
sx9310_get_default_reg(struct device *dev, int idx,
- struct sx9310_reg_default *reg_def)
+ struct sx_common_reg_default *reg_def)
{
u32 combined[SX9310_NUM_CHANNELS];
u32 start = 0, raw = 0, pos = 0;
@@ -1305,47 +903,21 @@ sx9310_get_default_reg(struct device *dev, int idx,
return reg_def;
}
-static int sx9310_init_device(struct iio_dev *indio_dev)
+static int sx9310_check_whoami(struct device *dev,
+ struct iio_dev *indio_dev)
{
- struct sx9310_data *data = iio_priv(indio_dev);
- struct sx9310_reg_default tmp;
- const struct sx9310_reg_default *initval;
+ struct sx_common_data *data = iio_priv(indio_dev);
+ unsigned int long ddata;
+ unsigned int whoami;
int ret;
- unsigned int i, val;
- ret = regmap_write(data->regmap, SX9310_REG_RESET, SX9310_SOFT_RESET);
+ ret = regmap_read(data->regmap, SX9310_REG_WHOAMI, &whoami);
if (ret)
return ret;
- usleep_range(1000, 2000); /* power-up time is ~1ms. */
-
- /* Clear reset interrupt state by reading SX9310_REG_IRQ_SRC. */
- ret = regmap_read(data->regmap, SX9310_REG_IRQ_SRC, &val);
- if (ret)
- return ret;
-
- /* Program some sane defaults. */
- for (i = 0; i < ARRAY_SIZE(sx9310_default_regs); i++) {
- initval = sx9310_get_default_reg(&indio_dev->dev, i, &tmp);
- ret = regmap_write(data->regmap, initval->reg, initval->def);
- if (ret)
- return ret;
- }
-
- return sx9310_init_compensation(indio_dev);
-}
-
-static int sx9310_set_indio_dev_name(struct device *dev,
- struct iio_dev *indio_dev,
- unsigned int whoami)
-{
- unsigned int long ddata;
-
ddata = (uintptr_t)device_get_match_data(dev);
- if (ddata != whoami) {
- dev_err(dev, "WHOAMI does not match device data: %u\n", whoami);
- return -ENODEV;
- }
+ if (ddata != whoami)
+ return -EINVAL;
switch (whoami) {
case SX9310_WHOAMI_VALUE:
@@ -1362,108 +934,47 @@ static int sx9310_set_indio_dev_name(struct device *dev,
return 0;
}
-static void sx9310_regulator_disable(void *_data)
-{
- struct sx9310_data *data = _data;
+static const struct sx_common_chip_info sx9310_chip_info = {
+ .reg_stat = SX9310_REG_STAT0,
+ .reg_irq_msk = SX9310_REG_IRQ_MSK,
+ .reg_enable_chan = SX9310_REG_PROX_CTRL0,
+ .reg_reset = SX9310_REG_RESET,
+
+ .mask_enable_chan = SX9310_REG_STAT1_COMPSTAT_MASK,
+ .irq_msk_offset = 3,
+ .num_channels = SX9310_NUM_CHANNELS,
+ .num_default_regs = ARRAY_SIZE(sx9310_default_regs),
+
+ .ops = {
+ .read_prox_data = sx9310_read_prox_data,
+ .check_whoami = sx9310_check_whoami,
+ .init_compensation = sx9310_init_compensation,
+ .wait_for_sample = sx9310_wait_for_sample,
+ .get_default_reg = sx9310_get_default_reg,
+ },
- regulator_bulk_disable(ARRAY_SIZE(data->supplies), data->supplies);
-}
+ .iio_channels = sx9310_channels,
+ .num_iio_channels = ARRAY_SIZE(sx9310_channels),
+ .iio_info = {
+ .read_raw = sx9310_read_raw,
+ .read_avail = sx9310_read_avail,
+ .read_event_value = sx9310_read_event_val,
+ .write_event_value = sx9310_write_event_val,
+ .write_raw = sx9310_write_raw,
+ .read_event_config = sx_common_read_event_config,
+ .write_event_config = sx_common_write_event_config,
+ },
+};
static int sx9310_probe(struct i2c_client *client)
{
- int ret;
- struct device *dev = &client->dev;
- struct iio_dev *indio_dev;
- struct sx9310_data *data;
-
- indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
- if (!indio_dev)
- return -ENOMEM;
-
- data = iio_priv(indio_dev);
- data->client = client;
- data->supplies[0].supply = "vdd";
- data->supplies[1].supply = "svdd";
- mutex_init(&data->mutex);
- init_completion(&data->completion);
-
- data->regmap = devm_regmap_init_i2c(client, &sx9310_regmap_config);
- if (IS_ERR(data->regmap))
- return PTR_ERR(data->regmap);
-
- ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies),
- data->supplies);
- if (ret)
- return ret;
-
- ret = regulator_bulk_enable(ARRAY_SIZE(data->supplies), data->supplies);
- if (ret)
- return ret;
- /* Must wait for Tpor time after initial power up */
- usleep_range(1000, 1100);
-
- ret = devm_add_action_or_reset(dev, sx9310_regulator_disable, data);
- if (ret)
- return ret;
-
- ret = regmap_read(data->regmap, SX9310_REG_WHOAMI, &data->whoami);
- if (ret) {
- dev_err(dev, "error in reading WHOAMI register: %d", ret);
- return ret;
- }
-
- ret = sx9310_set_indio_dev_name(dev, indio_dev, data->whoami);
- if (ret)
- return ret;
-
- ACPI_COMPANION_SET(&indio_dev->dev, ACPI_COMPANION(dev));
- indio_dev->channels = sx9310_channels;
- indio_dev->num_channels = ARRAY_SIZE(sx9310_channels);
- indio_dev->info = &sx9310_info;
- indio_dev->modes = INDIO_DIRECT_MODE;
- i2c_set_clientdata(client, indio_dev);
-
- ret = sx9310_init_device(indio_dev);
- if (ret)
- return ret;
-
- if (client->irq) {
- ret = devm_request_threaded_irq(dev, client->irq,
- sx9310_irq_handler,
- sx9310_irq_thread_handler,
- IRQF_ONESHOT,
- "sx9310_event", indio_dev);
- if (ret)
- return ret;
-
- data->trig = devm_iio_trigger_alloc(dev, "%s-dev%d",
- indio_dev->name,
- iio_device_id(indio_dev));
- if (!data->trig)
- return -ENOMEM;
-
- data->trig->ops = &sx9310_trigger_ops;
- iio_trigger_set_drvdata(data->trig, indio_dev);
-
- ret = devm_iio_trigger_register(dev, data->trig);
- if (ret)
- return ret;
- }
-
- ret = devm_iio_triggered_buffer_setup(dev, indio_dev,
- iio_pollfunc_store_time,
- sx9310_trigger_handler,
- &sx9310_buffer_setup_ops);
- if (ret)
- return ret;
-
- return devm_iio_device_register(dev, indio_dev);
+ return sx_common_probe(client, &sx9310_chip_info, &sx9310_regmap_config);
}
static int __maybe_unused sx9310_suspend(struct device *dev)
{
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
- struct sx9310_data *data = iio_priv(indio_dev);
+ struct sx_common_data *data = iio_priv(indio_dev);
u8 ctrl0;
int ret;
@@ -1471,11 +982,11 @@ static int __maybe_unused sx9310_suspend(struct device *dev)
mutex_lock(&data->mutex);
ret = regmap_read(data->regmap, SX9310_REG_PROX_CTRL0,
- &data->suspend_ctrl0);
+ &data->suspend_ctrl);
if (ret)
goto out;
- ctrl0 = data->suspend_ctrl0 & ~SX9310_REG_PROX_CTRL0_SENSOREN_MASK;
+ ctrl0 = data->suspend_ctrl & ~SX9310_REG_PROX_CTRL0_SENSOREN_MASK;
ret = regmap_write(data->regmap, SX9310_REG_PROX_CTRL0, ctrl0);
if (ret)
goto out;
@@ -1490,7 +1001,7 @@ static int __maybe_unused sx9310_suspend(struct device *dev)
static int __maybe_unused sx9310_resume(struct device *dev)
{
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
- struct sx9310_data *data = iio_priv(indio_dev);
+ struct sx_common_data *data = iio_priv(indio_dev);
int ret;
mutex_lock(&data->mutex);
@@ -1499,7 +1010,7 @@ static int __maybe_unused sx9310_resume(struct device *dev)
goto out;
ret = regmap_write(data->regmap, SX9310_REG_PROX_CTRL0,
- data->suspend_ctrl0);
+ data->suspend_ctrl);
out:
mutex_unlock(&data->mutex);
diff --git a/drivers/iio/proximity/sx_common.c b/drivers/iio/proximity/sx_common.c
new file mode 100644
index 00000000000000..281196d5081009
--- /dev/null
+++ b/drivers/iio/proximity/sx_common.c
@@ -0,0 +1,576 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2021 Google LLC.
+ *
+ * Common part of most Semtech SAR sensor.
+ */
+
+#include <linux/acpi.h>
+#include <linux/bitops.h>
+#include <linux/byteorder/generic.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/export.h>
+#include <linux/interrupt.h>
+#include <linux/irqreturn.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <vdso/bits.h>
+
+#include <linux/iio/buffer.h>
+#include <linux/iio/events.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/iio/trigger_consumer.h>
+
+#include "sx_common.h"
+
+/* All Semtech SAR sensor have IRQ bit in same order. */
+#define SX_COMMON_CONVDONE_IRQ BIT(0)
+#define SX_COMMON_FAR_IRQ BIT(2)
+#define SX_COMMON_CLOSE_IRQ BIT(3)
+
+const struct iio_event_spec sx_common_events[3] = {
+ {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_RISING,
+ .mask_shared_by_all = BIT(IIO_EV_INFO_PERIOD),
+ },
+ {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_FALLING,
+ .mask_shared_by_all = BIT(IIO_EV_INFO_PERIOD),
+ },
+ {
+ .type = IIO_EV_TYPE_THRESH,
+ .dir = IIO_EV_DIR_EITHER,
+ .mask_separate = BIT(IIO_EV_INFO_ENABLE) |
+ BIT(IIO_EV_INFO_HYSTERESIS) |
+ BIT(IIO_EV_INFO_VALUE),
+ },
+};
+EXPORT_SYMBOL_GPL(sx_common_events);
+
+static irqreturn_t sx_common_irq_handler(int irq, void *private)
+{
+ struct iio_dev *indio_dev = private;
+ struct sx_common_data *data = iio_priv(indio_dev);
+
+ if (data->trigger_enabled)
+ iio_trigger_poll(data->trig);
+
+ /*
+ * Even if no event is enabled, we need to wake the thread to clear the
+ * interrupt state by reading SX_COMMON_REG_IRQ_SRC.
+ * It is not possible to do that here because regmap_read takes a mutex.
+ */
+ return IRQ_WAKE_THREAD;
+}
+
+static void sx_common_push_events(struct iio_dev *indio_dev)
+{
+ int ret;
+ unsigned int val, chan;
+ struct sx_common_data *data = iio_priv(indio_dev);
+ s64 timestamp = iio_get_time_ns(indio_dev);
+ unsigned long prox_changed;
+
+ /* Read proximity state on all channels */
+ ret = regmap_read(data->regmap, data->chip_info->reg_stat, &val);
+ if (ret) {
+ dev_err(&data->client->dev, "i2c transfer error in irq\n");
+ return;
+ }
+
+ val <<= data->chip_info->stat_offset;
+
+ /*
+ * Only iterate over channels with changes on proximity status that have
+ * events enabled.
+ */
+ prox_changed = (data->chan_prox_stat ^ val) & data->chan_event;
+
+ for_each_set_bit(chan, &prox_changed, data->chip_info->num_channels) {
+ int dir;
+ u64 ev;
+
+ dir = (val & BIT(chan)) ? IIO_EV_DIR_FALLING : IIO_EV_DIR_RISING;
+ ev = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, chan,
+ IIO_EV_TYPE_THRESH, dir);
+
+ iio_push_event(indio_dev, ev, timestamp);
+ }
+ data->chan_prox_stat = val;
+}
+
+static int sx_common_enable_irq(struct sx_common_data *data, unsigned int irq)
+{
+ if (!data->client->irq)
+ return 0;
+ return regmap_update_bits(data->regmap, data->chip_info->reg_irq_msk,
+ irq << data->chip_info->irq_msk_offset,
+ irq << data->chip_info->irq_msk_offset);
+}
+
+static int sx_common_disable_irq(struct sx_common_data *data, unsigned int irq)
+{
+ if (!data->client->irq)
+ return 0;
+ return regmap_update_bits(data->regmap, data->chip_info->reg_irq_msk,
+ irq << data->chip_info->irq_msk_offset, 0);
+}
+
+static int sx_common_update_chan_en(struct sx_common_data *data,
+ unsigned long chan_read,
+ unsigned long chan_event)
+{
+ int ret;
+ unsigned long channels = chan_read | chan_event;
+
+ if ((data->chan_read | data->chan_event) != channels) {
+ ret = regmap_update_bits(data->regmap,
+ data->chip_info->reg_enable_chan,
+ data->chip_info->mask_enable_chan,
+ channels);
+ if (ret)
+ return ret;
+ }
+ data->chan_read = chan_read;
+ data->chan_event = chan_event;
+ return 0;
+}
+
+static int sx_common_get_read_channel(struct sx_common_data *data, int channel)
+{
+ return sx_common_update_chan_en(data, data->chan_read | BIT(channel),
+ data->chan_event);
+}
+
+static int sx_common_put_read_channel(struct sx_common_data *data, int channel)
+{
+ return sx_common_update_chan_en(data, data->chan_read & ~BIT(channel),
+ data->chan_event);
+}
+
+static int sx_common_get_event_channel(struct sx_common_data *data, int channel)
+{
+ return sx_common_update_chan_en(data, data->chan_read,
+ data->chan_event | BIT(channel));
+}
+
+static int sx_common_put_event_channel(struct sx_common_data *data, int channel)
+{
+ return sx_common_update_chan_en(data, data->chan_read,
+ data->chan_event & ~BIT(channel));
+}
+
+/**
+ * sx_common_read_proximity() - Read raw proximity value.
+ *
+ * @data: Internal data
+ * @chan: Channel to read
+ * @val: pointer to return read value.
+ *
+ * Request a conversion, wait for the sensor to be ready and
+ * return the raw proximity value.
+ */
+int sx_common_read_proximity(struct sx_common_data *data,
+ const struct iio_chan_spec *chan, int *val)
+{
+ int ret;
+ __be16 rawval;
+
+ mutex_lock(&data->mutex);
+
+ ret = sx_common_get_read_channel(data, chan->channel);
+ if (ret)
+ goto out;
+
+ ret = sx_common_enable_irq(data, SX_COMMON_CONVDONE_IRQ);
+ if (ret)
+ goto out_put_channel;
+
+ mutex_unlock(&data->mutex);
+
+ if (data->client->irq) {
+ ret = wait_for_completion_interruptible(&data->completion);
+ reinit_completion(&data->completion);
+ } else {
+ ret = data->chip_info->ops.wait_for_sample(data);
+ }
+
+ mutex_lock(&data->mutex);
+
+ if (ret)
+ goto out_disable_irq;
+
+ ret = data->chip_info->ops.read_prox_data(data, chan, &rawval);
+ if (ret)
+ goto out_disable_irq;
+
+ *val = sign_extend32(be16_to_cpu(rawval), chan->scan_type.realbits - 1);
+
+ ret = sx_common_disable_irq(data, SX_COMMON_CONVDONE_IRQ);
+ if (ret)
+ goto out_put_channel;
+
+ ret = sx_common_put_read_channel(data, chan->channel);
+ if (ret)
+ goto out;
+
+ mutex_unlock(&data->mutex);
+
+ return IIO_VAL_INT;
+
+out_disable_irq:
+ sx_common_disable_irq(data, SX_COMMON_CONVDONE_IRQ);
+out_put_channel:
+ sx_common_put_read_channel(data, chan->channel);
+out:
+ mutex_unlock(&data->mutex);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(sx_common_read_proximity);
+
+/**
+ * sx_common_read_event_config() - Configure event setting.
+ *
+ * @indio_dev: iio device object
+ * @chan: Channel to read
+ * @type: Type of event (unused)
+ * @dir: Direction of event (unused)
+ *
+ * return if the given channel is used for event gathering.
+ */
+int sx_common_read_event_config(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir)
+{
+ struct sx_common_data *data = iio_priv(indio_dev);
+
+ return !!(data->chan_event & BIT(chan->channel));
+}
+EXPORT_SYMBOL_GPL(sx_common_read_event_config);
+
+/**
+ * sx_common_write_event_config() - Configure event setting.
+ *
+ * @indio_dev: iio device object
+ * @chan: Channel to enable
+ * @type: Type of event (unused)
+ * @dir: Direction of event (unused)
+ * @state: State of the event.
+ *
+ * Enable/Disable event on a given channel.
+ */
+int sx_common_write_event_config(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir, int state)
+{
+ struct sx_common_data *data = iio_priv(indio_dev);
+ unsigned int eventirq = SX_COMMON_FAR_IRQ | SX_COMMON_CLOSE_IRQ;
+ int ret;
+
+ /* If the state hasn't changed, there's nothing to do. */
+ if (!!(data->chan_event & BIT(chan->channel)) == state)
+ return 0;
+
+ mutex_lock(&data->mutex);
+ if (state) {
+ ret = sx_common_get_event_channel(data, chan->channel);
+ if (ret)
+ goto out_unlock;
+ if (!(data->chan_event & ~BIT(chan->channel))) {
+ ret = sx_common_enable_irq(data, eventirq);
+ if (ret)
+ sx_common_put_event_channel(data, chan->channel);
+ }
+ } else {
+ ret = sx_common_put_event_channel(data, chan->channel);
+ if (ret)
+ goto out_unlock;
+ if (!data->chan_event) {
+ ret = sx_common_disable_irq(data, eventirq);
+ if (ret)
+ sx_common_get_event_channel(data, chan->channel);
+ }
+ }
+
+out_unlock:
+ mutex_unlock(&data->mutex);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(sx_common_write_event_config);
+
+static int sx_common_set_trigger_state(struct iio_trigger *trig, bool state)
+{
+ struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
+ struct sx_common_data *data = iio_priv(indio_dev);
+ int ret = 0;
+
+ mutex_lock(&data->mutex);
+
+ if (state)
+ ret = sx_common_enable_irq(data, SX_COMMON_CONVDONE_IRQ);
+ else if (!data->chan_read)
+ ret = sx_common_disable_irq(data, SX_COMMON_CONVDONE_IRQ);
+ if (ret)
+ goto out;
+
+ data->trigger_enabled = state;
+
+out:
+ mutex_unlock(&data->mutex);
+
+ return ret;
+}
+
+static const struct iio_trigger_ops sx_common_trigger_ops = {
+ .set_trigger_state = sx_common_set_trigger_state,
+};
+
+static irqreturn_t sx_common_irq_thread_handler(int irq, void *private)
+{
+ struct iio_dev *indio_dev = private;
+ struct sx_common_data *data = iio_priv(indio_dev);
+ int ret;
+ unsigned int val;
+
+ mutex_lock(&data->mutex);
+
+ ret = regmap_read(data->regmap, SX_COMMON_REG_IRQ_SRC, &val);
+ if (ret) {
+ dev_err(&data->client->dev, "i2c transfer error in irq\n");
+ goto out;
+ }
+
+ if (val & ((SX_COMMON_FAR_IRQ | SX_COMMON_CLOSE_IRQ) << data->chip_info->irq_msk_offset))
+ sx_common_push_events(indio_dev);
+
+ if (val & (SX_COMMON_CONVDONE_IRQ << data->chip_info->irq_msk_offset))
+ complete(&data->completion);
+
+out:
+ mutex_unlock(&data->mutex);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t sx_common_trigger_handler(int irq, void *private)
+{
+ struct iio_poll_func *pf = private;
+ struct iio_dev *indio_dev = pf->indio_dev;
+ struct sx_common_data *data = iio_priv(indio_dev);
+ __be16 val;
+ int bit, ret, i = 0;
+
+ mutex_lock(&data->mutex);
+
+ for_each_set_bit(bit, indio_dev->active_scan_mask,
+ indio_dev->masklength) {
+ ret = data->chip_info->ops.read_prox_data(data,
+ &indio_dev->channels[bit],
+ &val);
+ if (ret)
+ goto out;
+
+ data->buffer.channels[i++] = val;
+ }
+
+ iio_push_to_buffers_with_timestamp(indio_dev, &data->buffer,
+ pf->timestamp);
+
+out:
+ mutex_unlock(&data->mutex);
+
+ iio_trigger_notify_done(indio_dev->trig);
+
+ return IRQ_HANDLED;
+}
+
+static int sx_common_buffer_preenable(struct iio_dev *indio_dev)
+{
+ struct sx_common_data *data = iio_priv(indio_dev);
+ unsigned long channels = 0;
+ int bit, ret;
+
+ mutex_lock(&data->mutex);
+ for_each_set_bit(bit, indio_dev->active_scan_mask,
+ indio_dev->masklength)
+ __set_bit(indio_dev->channels[bit].channel, &channels);
+
+ ret = sx_common_update_chan_en(data, channels, data->chan_event);
+ mutex_unlock(&data->mutex);
+ return ret;
+}
+
+static int sx_common_buffer_postdisable(struct iio_dev *indio_dev)
+{
+ struct sx_common_data *data = iio_priv(indio_dev);
+ int ret;
+
+ mutex_lock(&data->mutex);
+ ret = sx_common_update_chan_en(data, 0, data->chan_event);
+ mutex_unlock(&data->mutex);
+ return ret;
+}
+
+static const struct iio_buffer_setup_ops sx_common_buffer_setup_ops = {
+ .preenable = sx_common_buffer_preenable,
+ .postdisable = sx_common_buffer_postdisable,
+};
+
+static void sx_common_regulator_disable(void *_data)
+{
+ struct sx_common_data *data = _data;
+
+ regulator_bulk_disable(ARRAY_SIZE(data->supplies), data->supplies);
+}
+
+#define SX_COMMON_SOFT_RESET 0xde
+
+static int sx_common_init_device(struct iio_dev *indio_dev)
+{
+ struct sx_common_data *data = iio_priv(indio_dev);
+ struct sx_common_reg_default tmp;
+ const struct sx_common_reg_default *initval;
+ int ret;
+ unsigned int i, val;
+
+ ret = regmap_write(data->regmap, data->chip_info->reg_reset,
+ SX_COMMON_SOFT_RESET);
+ if (ret)
+ return ret;
+
+ usleep_range(1000, 2000); /* power-up time is ~1ms. */
+
+ /* Clear reset interrupt state by reading SX_COMMON_REG_IRQ_SRC. */
+ ret = regmap_read(data->regmap, SX_COMMON_REG_IRQ_SRC, &val);
+ if (ret)
+ return ret;
+
+ /* Program defaults from constant or BIOS. */
+ for (i = 0; i < data->chip_info->num_default_regs; i++) {
+ initval = data->chip_info->ops.get_default_reg(&indio_dev->dev,
+ i, &tmp);
+ ret = regmap_write(data->regmap, initval->reg, initval->def);
+ if (ret)
+ return ret;
+ }
+
+ return data->chip_info->ops.init_compensation(indio_dev);
+}
+
+/**
+ * sx_common_probe() - Common setup for Semtech SAR sensor
+ *
+ * @client: I2C client object
+ * @chip_info: Semtech sensor chip information.
+ * @regmap_config: Sensor registers map configuration.
+ */
+int sx_common_probe(struct i2c_client *client,
+ const struct sx_common_chip_info *chip_info,
+ const struct regmap_config *regmap_config)
+{
+ struct device *dev = &client->dev;
+ struct iio_dev *indio_dev;
+ struct sx_common_data *data;
+ int ret;
+
+ indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
+ if (!indio_dev)
+ return -ENOMEM;
+
+ data = iio_priv(indio_dev);
+
+ data->chip_info = chip_info;
+ data->client = client;
+ data->supplies[0].supply = "vdd";
+ data->supplies[1].supply = "svdd";
+ mutex_init(&data->mutex);
+ init_completion(&data->completion);
+
+ data->regmap = devm_regmap_init_i2c(client, regmap_config);
+ if (IS_ERR(data->regmap))
+ return dev_err_probe(dev, PTR_ERR(data->regmap),
+ "Could init register map\n");
+
+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies),
+ data->supplies);
+ if (ret)
+ return dev_err_probe(dev, ret, "Unable to get regulators\n");
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(data->supplies), data->supplies);
+ if (ret)
+ return dev_err_probe(dev, ret, "Unable to enable regulators\n");
+
+ /* Must wait for Tpor time after initial power up */
+ usleep_range(1000, 1100);
+
+ ret = devm_add_action_or_reset(dev, sx_common_regulator_disable, data);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "Unable to register regulators deleter\n");
+
+ ret = data->chip_info->ops.check_whoami(dev, indio_dev);
+ if (ret)
+ return dev_err_probe(dev, ret, "error reading WHOAMI\n");
+
+ ACPI_COMPANION_SET(&indio_dev->dev, ACPI_COMPANION(dev));
+ indio_dev->modes = INDIO_DIRECT_MODE;
+
+ indio_dev->channels = data->chip_info->iio_channels;
+ indio_dev->num_channels = data->chip_info->num_iio_channels;
+ indio_dev->info = &data->chip_info->iio_info;
+
+ i2c_set_clientdata(client, indio_dev);
+
+ ret = sx_common_init_device(indio_dev);
+ if (ret)
+ return dev_err_probe(dev, ret, "Unable to initialize sensor\n");
+
+ if (client->irq) {
+ ret = devm_request_threaded_irq(dev, client->irq,
+ sx_common_irq_handler,
+ sx_common_irq_thread_handler,
+ IRQF_ONESHOT,
+ "sx_event", indio_dev);
+ if (ret)
+ return dev_err_probe(dev, ret, "No IRQ\n");
+
+ data->trig = devm_iio_trigger_alloc(dev, "%s-dev%d",
+ indio_dev->name,
+ iio_device_id(indio_dev));
+ if (!data->trig)
+ return -ENOMEM;
+
+ data->trig->ops = &sx_common_trigger_ops;
+ iio_trigger_set_drvdata(data->trig, indio_dev);
+
+ ret = devm_iio_trigger_register(dev, data->trig);
+ if (ret)
+ return ret;
+ }
+
+ ret = devm_iio_triggered_buffer_setup(dev, indio_dev,
+ iio_pollfunc_store_time,
+ sx_common_trigger_handler,
+ &sx_common_buffer_setup_ops);
+ if (ret)
+ return ret;
+
+ return devm_iio_device_register(dev, indio_dev);
+}
+EXPORT_SYMBOL_GPL(sx_common_probe);
+
+MODULE_AUTHOR("Gwendal Grignou <gwendal@chromium.org>");
+MODULE_DESCRIPTION("Common functions and structures for Semtech sensor");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/proximity/sx_common.h b/drivers/iio/proximity/sx_common.h
new file mode 100644
index 00000000000000..045ca4940a4fec
--- /dev/null
+++ b/drivers/iio/proximity/sx_common.h
@@ -0,0 +1,163 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2021 Google LLC.
+ *
+ * Code shared between most Semtech SAR sensor driver.
+ */
+
+#ifndef IIO_SX_COMMON_H
+#define IIO_SX_COMMON_H
+
+#include <linux/types.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/types.h>
+#include <linux/regulator/consumer.h>
+struct device;
+struct i2c_client;
+struct regmap_config;
+struct sx_common_data;
+
+#define SX_COMMON_REG_IRQ_SRC 0x00
+
+#define SX_COMMON_MAX_NUM_CHANNELS 4
+static_assert(SX_COMMON_MAX_NUM_CHANNELS < BITS_PER_LONG);
+
+struct sx_common_reg_default {
+ u8 reg;
+ u8 def;
+};
+
+/**
+ * struct sx_common_ops: function pointers needed by common code
+ *
+ * List functions needed by common code to gather information or configure
+ * the sensor.
+ *
+ * @read_prox_data: Function to read raw proximity data.
+ * @check_whoami: Set device name based on whoami register.
+ * @init_compensation: Function to set initial compensation.
+ * @wait_for_sample: When there are no physical IRQ, function to wait for a
+ * sample to be ready.
+ * @get_default_reg: Populate the initial value for a given register.
+ */
+struct sx_common_ops {
+ int (*read_prox_data)(struct sx_common_data *data,
+ const struct iio_chan_spec *chan, __be16 *val);
+ int (*check_whoami)(struct device *dev, struct iio_dev *indio_dev);
+ int (*init_compensation)(struct iio_dev *indio_dev);
+ int (*wait_for_sample)(struct sx_common_data *data);
+ const struct sx_common_reg_default *
+ (*get_default_reg)(struct device *dev, int idx,
+ struct sx_common_reg_default *reg_def);
+};
+
+/**
+ * struct sx_common_chip_info: Semtech Sensor private chip information
+ *
+ * @reg_stat: Main status register address.
+ * @reg_irq_msk: IRQ mask register address.
+ * @reg_enable_chan: Address to enable/disable channels/phases.
+ * @reg_reset: Reset register address.
+ *
+ * @mask_enable_chan: Mask over the channels bits in the enable channel
+ * register.
+ * @stat_offset: Offset to check phase status.
+ * @irq_msk_offset: Offset to enable interrupt in the IRQ mask
+ * register.
+ *
+ * @num_channels: Number of channel/phase.
+ * @num_default_regs: Number of internal registers that can be configured.
+ *
+ * @ops: Private functions pointers.
+ *
+ * @iio_channels: Description of exposed iio channels.
+ * @num_iio_channels: Number of iio_channels.
+ * @iio_info: iio_info structure for this driver.
+ *
+ */
+struct sx_common_chip_info {
+ unsigned int reg_stat;
+ unsigned int reg_irq_msk;
+ unsigned int reg_enable_chan;
+ unsigned int reg_reset;
+
+ unsigned int mask_enable_chan;
+ unsigned int stat_offset;
+ unsigned int irq_msk_offset;
+ unsigned int num_channels;
+ int num_default_regs;
+
+ struct sx_common_ops ops;
+
+ const struct iio_chan_spec *iio_channels;
+ int num_iio_channels;
+ struct iio_info iio_info;
+};
+
+/**
+ * struct sx_common_data: Semtech Sensor private data structure.
+ *
+ * @chip_info: Structure defining sensor internals.
+ * @mutex: Serialize access to registers and channel configuration.
+ * @num_channels: Number of channel/phase.
+ * @completion: completion object to wait for data acquisition.
+ * @client: I2C client structure.
+ * @trig: IIO trigger object.
+ * @regmap: Register map.
+ *
+ * @num_default_regs: Number of default registers to set at init.
+ * @supplies: Power supplies object.
+ * @chan_prox_stat: Last reading of the proximity status for each channel.
+ * We only send an event to user space when this changes.
+ * @trigger_enabled: True when the device trigger is enabled.
+ *
+ * @buffer: Bufffer to store raw samples.
+ * @suspend_ctrl: Remember enabled channels and sample rate during suspend.
+ * @chan_read: Bit field for each raw channel enabled.
+ * @chan_event: Bit field for each event enabled.
+ *
+ */
+struct sx_common_data {
+ const struct sx_common_chip_info *chip_info;
+
+ struct mutex mutex;
+ struct completion completion;
+ struct i2c_client *client;
+ struct iio_trigger *trig;
+ struct regmap *regmap;
+
+ struct regulator_bulk_data supplies[2];
+ unsigned long chan_prox_stat;
+ bool trigger_enabled;
+
+ /* Ensure correct alignment of timestamp when present. */
+ struct {
+ __be16 channels[SX_COMMON_MAX_NUM_CHANNELS];
+ s64 ts __aligned(8);
+ } buffer;
+
+ unsigned int suspend_ctrl;
+ unsigned long chan_read;
+ unsigned long chan_event;
+};
+
+int sx_common_read_proximity(struct sx_common_data *data,
+ const struct iio_chan_spec *chan, int *val);
+
+int sx_common_read_event_config(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir);
+int sx_common_write_event_config(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir, int state);
+
+int sx_common_probe(struct i2c_client *client,
+ const struct sx_common_chip_info *chip_info,
+ const struct regmap_config *regmap_config);
+
+/* 3 is the number of events defined by a single phase. */
+extern const struct iio_event_spec sx_common_events[3];
+
+#endif /* IIO_SX_COMMON_H */
--
2.34.1.400.ga245620fadb-goog
^ permalink raw reply related [flat|nested] 15+ messages in thread* [PATCH v5 3/5] iio: proximity: Add SX9324 support
2021-12-08 0:43 [PATCH v5 0/5] Expand Semtech SAR Sensors support Gwendal Grignou
2021-12-08 0:43 ` [PATCH v5 1/5] iio: sx9310: Add frequency in read_avail Gwendal Grignou
2021-12-08 0:43 ` [PATCH v5 2/5] iio: sx9310: Extract common Semtech sensor logic Gwendal Grignou
@ 2021-12-08 0:43 ` Gwendal Grignou
2021-12-08 3:26 ` kernel test robot
` (2 more replies)
2021-12-08 0:43 ` [PATCH v5 4/5] dt-bindings: iio: Add sx9324 binding Gwendal Grignou
2021-12-08 0:43 ` [PATCH v5 5/5] iio: sx9324: Add dt_binding support Gwendal Grignou
4 siblings, 3 replies; 15+ messages in thread
From: Gwendal Grignou @ 2021-12-08 0:43 UTC (permalink / raw)
To: jic23, lars, swboyd
Cc: andy.shevchenko, linux-iio, devicetree, Gwendal Grignou
Semtech SAR sensor SX9324 is an evolution of the SX9310:
It has 4 phases that can be configure to capture and process data
from any of 3 CS pins and provide independent detection:
proximity, table proximity or body proximity.
Gather antenna data:
echo sx9324-dev3 > trigger/current_trigger
echo 1 > scan_elements/in_proximity0_en
echo 1 > buffer/enable
od -v -An --endian=big -t d2 -w2 /dev/iio\:device3
(at 10Hz, the default).
Trigger events:
Setting:
thresh_falling_period: 2 (events)
thresh_rising_period: 2 (events)
in_proximity0_thresh_either_value: 300
in_proximity0_thresh_either_hysteresis: 72
using iio_event_monitor /dev/iio\:deviceX, approaching my hand to the
antenna pad, I see:
...
Event: time: 1634763907532035297, type: proximity, channel: 0, evtype:
thresh, direction: falling
Event: time: 1634763910138104640, type: proximity, channel: 0, evtype:
thresh, direction: rising
...
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
---
Changes in v5:
- Fix includes with iwyu.
Changes in v4:
- Remove SX9324_DRIVER_NAME define
- Drop comma after sentinel
- Handle negative values when setting parameters.
- Simpliy whoami function.
Changes in v3:
- Fix constant names
- Disable IRQ at suspend.
- Concatenate 2 lines.
Changes in v2:
- Use new interface with sx_common.
- Document phase configuration parameter.
- Define phase configuration parameter in channel.
- Only Add needed changes in Kconfig and Makefile.
- Use read_avail to define available frequencies
.../ABI/testing/sysfs-bus-iio-sx9324 | 28 +
drivers/iio/proximity/Kconfig | 14 +
drivers/iio/proximity/Makefile | 1 +
drivers/iio/proximity/sx9324.c | 910 ++++++++++++++++++
4 files changed, 953 insertions(+)
create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-sx9324
create mode 100644 drivers/iio/proximity/sx9324.c
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-sx9324 b/Documentation/ABI/testing/sysfs-bus-iio-sx9324
new file mode 100644
index 00000000000000..632e3321f5a3df
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-sx9324
@@ -0,0 +1,28 @@
+What: /sys/bus/iio/devices/iio:deviceX/in_proximity<id>_setup
+Date: November 2021
+KernelVersion: 5.17
+Contact: Gwendal Grignou <gwendal@chromium.org>
+Description:
+ SX9324 has 3 inputs, CS0, CS1 and CS2. Hardware layout
+ defines if the input is
+ + not connected (HZ),
+ + grounded (GD),
+ + connected to an antenna where it can act as a base
+ (DS - data shield), or measured input (MI).
+
+ The sensor rotates measurement across 4 phases
+ (PH0, PH1, PH2, PH3), where the inputs are configured
+ and then measured.
+
+ By default, during the first phase, [PH0], CS0 is measured,
+ while CS1 and CS2 are used as shields.
+ `cat in_proximity0_setup` returns "MI,DS,DS".
+ [PH1], CS1 is measured, CS0 and CS2 are shield:
+ `cat in_proximity1_setup` returns "DS,MI,DS".
+ [PH2], CS2 is measured, CS0 and CS1 are shield:
+ `cat in_proximity1_setup` returns "DS,DS,MI".
+ [PH3], CS1 and CS2 are measured (combo mode):
+ `cat in_proximity1_setup` returns "DS,MI,MI".
+
+ Note, these are the chip default. Hardware layout will most
+ likely dictate different output. The entry is read-only.
diff --git a/drivers/iio/proximity/Kconfig b/drivers/iio/proximity/Kconfig
index e88fc373c2c903..aaddf97f9b2192 100644
--- a/drivers/iio/proximity/Kconfig
+++ b/drivers/iio/proximity/Kconfig
@@ -129,6 +129,20 @@ config SX9310
To compile this driver as a module, choose M here: the
module will be called sx9310.
+config SX9324
+ tristate "SX9324 Semtech proximity sensor"
+ select IIO_BUFFER
+ select IIO_TRIGGERED_BUFFER
+ select REGMAP_I2C
+ select SX_COMMON
+ depends on I2C
+ help
+ Say Y here to build a driver for Semtech's SX9324
+ proximity/button sensor.
+
+ To compile this driver as a module, choose M here: the
+ module will be called sx9324.
+
config SX9500
tristate "SX9500 Semtech proximity sensor"
select IIO_BUFFER
diff --git a/drivers/iio/proximity/Makefile b/drivers/iio/proximity/Makefile
index 2577fbce4144e5..cffe962b352718 100644
--- a/drivers/iio/proximity/Makefile
+++ b/drivers/iio/proximity/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_RFD77402) += rfd77402.o
obj-$(CONFIG_SRF04) += srf04.o
obj-$(CONFIG_SRF08) += srf08.o
obj-$(CONFIG_SX9310) += sx9310.o
+obj-$(CONFIG_SX9324) += sx9324.o
obj-$(CONFIG_SX_COMMON) += sx_common.o
obj-$(CONFIG_SX9500) += sx9500.o
obj-$(CONFIG_VCNL3020) += vcnl3020.o
diff --git a/drivers/iio/proximity/sx9324.c b/drivers/iio/proximity/sx9324.c
new file mode 100644
index 00000000000000..a27aae64e6d4e1
--- /dev/null
+++ b/drivers/iio/proximity/sx9324.c
@@ -0,0 +1,910 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2021 Google LLC.
+ *
+ * Driver for Semtech's SX9324 capacitive proximity/button solution.
+ * Based on SX9324 driver and copy of datasheet at:
+ * https://edit.wpgdadawant.com/uploads/news_file/program/2019/30184/tech_files/program_30184_suggest_other_file.pdf
+ */
+
+#include <linux/acpi.h>
+#include <linux/bits.h>
+#include <linux/bitfield.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/log2.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+
+#include <linux/iio/iio.h>
+
+#include "sx_common.h"
+
+/* Register definitions. */
+#define SX9324_REG_IRQ_SRC SX_COMMON_REG_IRQ_SRC
+#define SX9324_REG_STAT0 0x01
+#define SX9324_REG_STAT1 0x02
+#define SX9324_REG_STAT2 0x03
+#define SX9324_REG_STAT2_COMPSTAT_MASK GENMASK(3, 0)
+#define SX9324_REG_STAT3 0x04
+#define SX9324_REG_IRQ_MSK 0x05
+#define SX9324_CONVDONE_IRQ BIT(3)
+#define SX9324_FAR_IRQ BIT(5)
+#define SX9324_CLOSE_IRQ BIT(6)
+#define SX9324_REG_IRQ_CFG0 0x06
+#define SX9324_REG_IRQ_CFG1 0x07
+#define SX9324_REG_IRQ_CFG1_FAILCOND 0x80
+#define SX9324_REG_IRQ_CFG2 0x08
+
+#define SX9324_REG_GNRL_CTRL0 0x10
+#define SX9324_REG_GNRL_CTRL0_SCANPERIOD_MASK GENMASK(4, 0)
+#define SX9324_REG_GNRL_CTRL0_SCANPERIOD_100MS 0x16
+#define SX9324_REG_GNRL_CTRL1 0x11
+#define SX9324_REG_GNRL_CTRL1_PHEN_MASK GENMASK(3, 0)
+#define SX9324_REG_GNRL_CTRL1_PAUSECTRL 0x20
+
+#define SX9324_REG_I2C_ADDR 0x14
+#define SX9324_REG_CLK_SPRD 0x15
+
+#define SX9324_REG_AFE_CTRL0 0x20
+#define SX9324_REG_AFE_CTRL1 0x21
+#define SX9324_REG_AFE_CTRL2 0x22
+#define SX9324_REG_AFE_CTRL3 0x23
+#define SX9324_REG_AFE_CTRL4 0x24
+#define SX9324_REG_AFE_CTRL4_FREQ_83_33HZ 0x40
+#define SX9324_REG_AFE_CTRL4_RESOLUTION_MASK GENMASK(2, 0)
+#define SX9324_REG_AFE_CTRL4_RES_100 0x04
+#define SX9324_REG_AFE_CTRL5 0x25
+#define SX9324_REG_AFE_CTRL6 0x26
+#define SX9324_REG_AFE_CTRL7 0x27
+#define SX9324_REG_AFE_PH0 0x28
+#define SX9324_REG_AFE_PH0_PIN_MASK(_pin) \
+ GENMASK(2 * (_pin) + 1, 2 * (_pin))
+
+#define SX9324_REG_AFE_PH1 0x29
+#define SX9324_REG_AFE_PH2 0x2a
+#define SX9324_REG_AFE_PH3 0x2b
+#define SX9324_REG_AFE_CTRL8 0x2c
+#define SX9324_REG_AFE_CTRL8_RESFILTN_4KOHM 0x02
+#define SX9324_REG_AFE_CTRL9 0x2d
+#define SX9324_REG_AFE_CTRL9_AGAIN_1 0x08
+
+#define SX9324_REG_PROX_CTRL0 0x30
+#define SX9324_REG_PROX_CTRL0_GAIN_MASK GENMASK(5, 3)
+#define SX9324_REG_PROX_CTRL0_GAIN_1 0x80
+#define SX9324_REG_PROX_CTRL0_RAWFILT_1P50 0x01
+#define SX9324_REG_PROX_CTRL1 0x31
+#define SX9324_REG_PROX_CTRL2 0x32
+#define SX9324_REG_PROX_CTRL2_AVGNEG_THRESH_16K 0x20
+#define SX9324_REG_PROX_CTRL3 0x33
+#define SX9324_REG_PROX_CTRL3_AVGDEB_2SAMPLES 0x40
+#define SX9324_REG_PROX_CTRL3_AVGPOS_THRESH_16K 0x20
+#define SX9324_REG_PROX_CTRL4 0x34
+#define SX9324_REG_PROX_CTRL4_AVGNEGFILT_MASK GENMASK(5, 3)
+#define SX9324_REG_PROX_CTRL4_AVGNEG_FILT_2 0x08
+#define SX9324_REG_PROX_CTRL4_AVGPOSFILT_MASK GENMASK(2, 0)
+#define SX9324_REG_PROX_CTRL3_AVGPOS_FILT_256 0x04
+#define SX9324_REG_PROX_CTRL5 0x35
+#define SX9324_REG_PROX_CTRL5_HYST_MASK GENMASK(5, 4)
+#define SX9324_REG_PROX_CTRL5_CLOSE_DEBOUNCE_MASK GENMASK(3, 2)
+#define SX9324_REG_PROX_CTRL5_FAR_DEBOUNCE_MASK GENMASK(1, 0)
+#define SX9324_REG_PROX_CTRL6 0x36
+#define SX9324_REG_PROX_CTRL6_PROXTHRESH_32 0x08
+#define SX9324_REG_PROX_CTRL7 0x37
+
+#define SX9324_REG_ADV_CTRL0 0x40
+#define SX9324_REG_ADV_CTRL1 0x41
+#define SX9324_REG_ADV_CTRL2 0x42
+#define SX9324_REG_ADV_CTRL3 0x43
+#define SX9324_REG_ADV_CTRL4 0x44
+#define SX9324_REG_ADV_CTRL5 0x45
+#define SX9324_REG_ADV_CTRL5_STARTUPSENS_MASK GENMASK(3, 2)
+#define SX9324_REG_ADV_CTRL5_STARTUP_SENSOR_1 0x04
+#define SX9324_REG_ADV_CTRL5_STARTUP_METHOD_1 0x01
+#define SX9324_REG_ADV_CTRL6 0x46
+#define SX9324_REG_ADV_CTRL7 0x47
+#define SX9324_REG_ADV_CTRL8 0x48
+#define SX9324_REG_ADV_CTRL9 0x49
+#define SX9324_REG_ADV_CTRL10 0x4a
+#define SX9324_REG_ADV_CTRL11 0x4b
+#define SX9324_REG_ADV_CTRL12 0x4c
+#define SX9324_REG_ADV_CTRL13 0x4d
+#define SX9324_REG_ADV_CTRL14 0x4e
+#define SX9324_REG_ADV_CTRL15 0x4f
+#define SX9324_REG_ADV_CTRL16 0x50
+#define SX9324_REG_ADV_CTRL17 0x51
+#define SX9324_REG_ADV_CTRL18 0x52
+#define SX9324_REG_ADV_CTRL19 0x53
+#define SX9324_REG_ADV_CTRL20 0x54
+#define SX9324_REG_ADV_CTRL19_HIGHT_FAILURE_THRESH_SATURATION 0xf0
+
+#define SX9324_REG_PHASE_SEL 0x60
+
+#define SX9324_REG_USEFUL_MSB 0x61
+#define SX9324_REG_USEFUL_LSB 0x62
+
+#define SX9324_REG_AVG_MSB 0x63
+#define SX9324_REG_AVG_LSB 0x64
+
+#define SX9324_REG_DIFF_MSB 0x65
+#define SX9324_REG_DIFF_LSB 0x66
+
+#define SX9324_REG_OFFSET_MSB 0x67
+#define SX9324_REG_OFFSET_LSB 0x68
+
+#define SX9324_REG_SAR_MSB 0x69
+#define SX9324_REG_SAR_LSB 0x6a
+
+#define SX9324_REG_RESET 0x9f
+/* Write this to REG_RESET to do a soft reset. */
+#define SX9324_SOFT_RESET 0xde
+
+#define SX9324_REG_WHOAMI 0xfa
+#define SX9324_WHOAMI_VALUE 0x23
+
+#define SX9324_REG_REVISION 0xfe
+
+/* 4 channels, as defined in STAT0: PH0, PH1, PH2 and PH3. */
+#define SX9324_NUM_CHANNELS 4
+/* 3 CS pins: CS0, CS1, CS2. */
+#define SX9324_NUM_PINS 3
+
+static const char * const sx9324_cs_pin_usage[] = { "HZ", "MI", "DS", "GD" };
+
+static ssize_t sx9324_phase_configuration_show(struct iio_dev *indio_dev,
+ uintptr_t private,
+ const struct iio_chan_spec *chan,
+ char *buf)
+{
+ struct sx_common_data *data = iio_priv(indio_dev);
+ unsigned int val;
+ int i, ret, pin_idx;
+ size_t len = 0;
+
+ ret = regmap_read(data->regmap, SX9324_REG_AFE_PH0 + chan->channel, &val);
+
+ for (i = 0; i < SX9324_NUM_PINS; i++) {
+ pin_idx = (val & SX9324_REG_AFE_PH0_PIN_MASK(i)) >> (2 * i);
+ len += scnprintf(buf + len, PAGE_SIZE - len, "%s,",
+ sx9324_cs_pin_usage[pin_idx]);
+ }
+ buf[len - 1] = '\n';
+ return len;
+}
+
+static const struct iio_chan_spec_ext_info sx9324_channel_ext_info[] = {
+ {
+ .name = "setting",
+ .shared = IIO_SEPARATE,
+ .read = sx9324_phase_configuration_show,
+ },
+ {}
+};
+
+#define SX9324_CHANNEL(idx) \
+{ \
+ .type = IIO_PROXIMITY, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+ BIT(IIO_CHAN_INFO_HARDWAREGAIN), \
+ .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
+ .info_mask_separate_available = \
+ BIT(IIO_CHAN_INFO_HARDWAREGAIN), \
+ .info_mask_shared_by_all_available = \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ), \
+ .indexed = 1, \
+ .channel = idx, \
+ .address = SX9324_REG_DIFF_MSB, \
+ .event_spec = sx_common_events, \
+ .num_event_specs = ARRAY_SIZE(sx_common_events), \
+ .scan_index = idx, \
+ .scan_type = { \
+ .sign = 's', \
+ .realbits = 12, \
+ .storagebits = 16, \
+ .endianness = IIO_BE, \
+ }, \
+ .ext_info = sx9324_channel_ext_info, \
+}
+
+static const struct iio_chan_spec sx9324_channels[] = {
+ SX9324_CHANNEL(0), /* Phase 0 */
+ SX9324_CHANNEL(1), /* Phase 1 */
+ SX9324_CHANNEL(2), /* Phase 2 */
+ SX9324_CHANNEL(3), /* Phase 3 */
+ IIO_CHAN_SOFT_TIMESTAMP(4),
+};
+
+/*
+ * Each entry contains the integer part (val) and the fractional part, in micro
+ * seconds. It conforms to the IIO output IIO_VAL_INT_PLUS_MICRO.
+ */
+static const struct {
+ int val;
+ int val2;
+} sx9324_samp_freq_table[] = {
+ {1000, 0}, /* 00000: Min (no idle time) */
+ {500, 0}, /* 00001: 2 ms */
+ {250, 0}, /* 00010: 4 ms */
+ {166, 666666}, /* 00011: 6 ms */
+ {125, 0}, /* 00100: 8 ms */
+ {100, 0}, /* 00101: 10 ms */
+ {71, 428571}, /* 00110: 14 ms */
+ {55, 555556}, /* 00111: 18 ms */
+ {45, 454545}, /* 01000: 22 ms */
+ {38, 461538}, /* 01001: 26 ms */
+ {33, 333333}, /* 01010: 30 ms */
+ {29, 411765}, /* 01011: 34 ms */
+ {26, 315789}, /* 01100: 38 ms */
+ {23, 809524}, /* 01101: 42 ms */
+ {21, 739130}, /* 01110: 46 ms */
+ {20, 0}, /* 01111: 50 ms */
+ {17, 857143}, /* 10000: 56 ms */
+ {16, 129032}, /* 10001: 62 ms */
+ {14, 705882}, /* 10010: 68 ms */
+ {13, 513514}, /* 10011: 74 ms */
+ {12, 500000}, /* 10100: 80 ms */
+ {11, 111111}, /* 10101: 90 ms */
+ {10, 0}, /* 10110: 100 ms (Typ.) */
+ {5, 0}, /* 10111: 200 ms */
+ {3, 333333}, /* 11000: 300 ms */
+ {2, 500000}, /* 11001: 400 ms */
+ {1, 666667}, /* 11010: 600 ms */
+ {1, 250000}, /* 11011: 800 ms */
+ {1, 0}, /* 11100: 1 s */
+ {0, 500000}, /* 11101: 2 s */
+ {0, 333333}, /* 11110: 3 s */
+ {0, 250000}, /* 11111: 4 s */
+};
+
+static const unsigned int sx9324_scan_period_table[] = {
+ 2, 15, 30, 45, 60, 90, 120, 200,
+ 400, 600, 800, 1000, 2000, 3000, 4000, 5000,
+};
+
+static const struct regmap_range sx9324_writable_reg_ranges[] = {
+ /*
+ * To set COMPSTAT for compensation, even if datasheet says register is
+ * RO.
+ */
+ regmap_reg_range(SX9324_REG_STAT2, SX9324_REG_STAT2),
+ regmap_reg_range(SX9324_REG_IRQ_MSK, SX9324_REG_IRQ_CFG2),
+ regmap_reg_range(SX9324_REG_GNRL_CTRL0, SX9324_REG_GNRL_CTRL1),
+ /* Leave i2c and clock spreading as unavailable */
+ regmap_reg_range(SX9324_REG_AFE_CTRL0, SX9324_REG_AFE_CTRL9),
+ regmap_reg_range(SX9324_REG_PROX_CTRL0, SX9324_REG_PROX_CTRL7),
+ regmap_reg_range(SX9324_REG_ADV_CTRL0, SX9324_REG_ADV_CTRL20),
+ regmap_reg_range(SX9324_REG_PHASE_SEL, SX9324_REG_PHASE_SEL),
+ regmap_reg_range(SX9324_REG_OFFSET_MSB, SX9324_REG_OFFSET_LSB),
+ regmap_reg_range(SX9324_REG_RESET, SX9324_REG_RESET),
+};
+
+static const struct regmap_access_table sx9324_writeable_regs = {
+ .yes_ranges = sx9324_writable_reg_ranges,
+ .n_yes_ranges = ARRAY_SIZE(sx9324_writable_reg_ranges),
+};
+
+/*
+ * All allocated registers are readable, so we just list unallocated
+ * ones.
+ */
+static const struct regmap_range sx9324_non_readable_reg_ranges[] = {
+ regmap_reg_range(SX9324_REG_IRQ_CFG2 + 1, SX9324_REG_GNRL_CTRL0 - 1),
+ regmap_reg_range(SX9324_REG_GNRL_CTRL1 + 1, SX9324_REG_AFE_CTRL0 - 1),
+ regmap_reg_range(SX9324_REG_AFE_CTRL9 + 1, SX9324_REG_PROX_CTRL0 - 1),
+ regmap_reg_range(SX9324_REG_PROX_CTRL7 + 1, SX9324_REG_ADV_CTRL0 - 1),
+ regmap_reg_range(SX9324_REG_ADV_CTRL20 + 1, SX9324_REG_PHASE_SEL - 1),
+ regmap_reg_range(SX9324_REG_SAR_LSB + 1, SX9324_REG_RESET - 1),
+ regmap_reg_range(SX9324_REG_RESET + 1, SX9324_REG_WHOAMI - 1),
+ regmap_reg_range(SX9324_REG_WHOAMI + 1, SX9324_REG_REVISION - 1),
+};
+
+static const struct regmap_access_table sx9324_readable_regs = {
+ .no_ranges = sx9324_non_readable_reg_ranges,
+ .n_no_ranges = ARRAY_SIZE(sx9324_non_readable_reg_ranges),
+};
+
+static const struct regmap_range sx9324_volatile_reg_ranges[] = {
+ regmap_reg_range(SX9324_REG_IRQ_SRC, SX9324_REG_STAT3),
+ regmap_reg_range(SX9324_REG_USEFUL_MSB, SX9324_REG_DIFF_LSB),
+ regmap_reg_range(SX9324_REG_SAR_MSB, SX9324_REG_SAR_LSB),
+ regmap_reg_range(SX9324_REG_WHOAMI, SX9324_REG_WHOAMI),
+ regmap_reg_range(SX9324_REG_REVISION, SX9324_REG_REVISION),
+};
+
+static const struct regmap_access_table sx9324_volatile_regs = {
+ .yes_ranges = sx9324_volatile_reg_ranges,
+ .n_yes_ranges = ARRAY_SIZE(sx9324_volatile_reg_ranges),
+};
+
+static const struct regmap_config sx9324_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .max_register = SX9324_REG_REVISION,
+ .cache_type = REGCACHE_RBTREE,
+
+ .wr_table = &sx9324_writeable_regs,
+ .rd_table = &sx9324_readable_regs,
+ .volatile_table = &sx9324_volatile_regs,
+};
+
+static int sx9324_read_prox_data(struct sx_common_data *data,
+ const struct iio_chan_spec *chan,
+ __be16 *val)
+{
+ int ret;
+
+ ret = regmap_write(data->regmap, SX9324_REG_PHASE_SEL, chan->channel);
+ if (ret < 0)
+ return ret;
+
+ return regmap_bulk_read(data->regmap, chan->address, val, sizeof(*val));
+}
+
+/*
+ * If we have no interrupt support, we have to wait for a scan period
+ * after enabling a channel to get a result.
+ */
+static int sx9324_wait_for_sample(struct sx_common_data *data)
+{
+ int ret;
+ unsigned int val;
+
+ ret = regmap_read(data->regmap, SX9324_REG_GNRL_CTRL0, &val);
+ if (ret < 0)
+ return ret;
+ val = FIELD_GET(SX9324_REG_GNRL_CTRL0_SCANPERIOD_MASK, val);
+
+ msleep(sx9324_scan_period_table[val]);
+
+ return 0;
+}
+
+static int sx9324_read_gain(struct sx_common_data *data,
+ const struct iio_chan_spec *chan, int *val)
+{
+ unsigned int reg, regval;
+ int ret;
+
+ reg = SX9324_REG_PROX_CTRL0 + chan->channel / 2;
+ ret = regmap_read(data->regmap, reg, ®val);
+ if (ret)
+ return ret;
+
+ *val = 1 << FIELD_GET(SX9324_REG_PROX_CTRL0_GAIN_MASK, regval);
+
+ return IIO_VAL_INT;
+}
+
+static int sx9324_read_samp_freq(struct sx_common_data *data,
+ int *val, int *val2)
+{
+ int ret;
+ unsigned int regval;
+
+ ret = regmap_read(data->regmap, SX9324_REG_GNRL_CTRL0, ®val);
+ if (ret)
+ return ret;
+
+ regval = FIELD_GET(SX9324_REG_GNRL_CTRL0_SCANPERIOD_MASK, regval);
+ *val = sx9324_samp_freq_table[regval].val;
+ *val2 = sx9324_samp_freq_table[regval].val2;
+
+ return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static int sx9324_read_raw(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ int *val, int *val2, long mask)
+{
+ struct sx_common_data *data = iio_priv(indio_dev);
+ int ret;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_RAW:
+ ret = iio_device_claim_direct_mode(indio_dev);
+ if (ret)
+ return ret;
+
+ ret = sx_common_read_proximity(data, chan, val);
+ iio_device_release_direct_mode(indio_dev);
+ return ret;
+ case IIO_CHAN_INFO_HARDWAREGAIN:
+ ret = iio_device_claim_direct_mode(indio_dev);
+ if (ret)
+ return ret;
+
+ ret = sx9324_read_gain(data, chan, val);
+ iio_device_release_direct_mode(indio_dev);
+ return ret;
+ case IIO_CHAN_INFO_SAMP_FREQ:
+ return sx9324_read_samp_freq(data, val, val2);
+ default:
+ return -EINVAL;
+ }
+}
+
+static const int sx9324_gain_vals[] = { 1, 2, 4, 8 };
+
+static int sx9324_read_avail(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ const int **vals, int *type, int *length,
+ long mask)
+{
+ if (chan->type != IIO_PROXIMITY)
+ return -EINVAL;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_HARDWAREGAIN:
+ *type = IIO_VAL_INT;
+ *length = ARRAY_SIZE(sx9324_gain_vals);
+ *vals = sx9324_gain_vals;
+ return IIO_AVAIL_LIST;
+ case IIO_CHAN_INFO_SAMP_FREQ:
+ *type = IIO_VAL_INT_PLUS_MICRO;
+ *length = ARRAY_SIZE(sx9324_samp_freq_table) * 2;
+ *vals = (int *)sx9324_samp_freq_table;
+ return IIO_AVAIL_LIST;
+ }
+
+ return -EINVAL;
+}
+
+static int sx9324_set_samp_freq(struct sx_common_data *data,
+ int val, int val2)
+{
+ int i, ret;
+
+ for (i = 0; i < ARRAY_SIZE(sx9324_samp_freq_table); i++)
+ if (val == sx9324_samp_freq_table[i].val &&
+ val2 == sx9324_samp_freq_table[i].val2)
+ break;
+
+ if (i == ARRAY_SIZE(sx9324_samp_freq_table))
+ return -EINVAL;
+
+ mutex_lock(&data->mutex);
+
+ ret = regmap_update_bits(data->regmap,
+ SX9324_REG_GNRL_CTRL0,
+ SX9324_REG_GNRL_CTRL0_SCANPERIOD_MASK, i);
+
+ mutex_unlock(&data->mutex);
+
+ return ret;
+}
+
+static int sx9324_read_thresh(struct sx_common_data *data,
+ const struct iio_chan_spec *chan, int *val)
+{
+ unsigned int regval;
+ unsigned int reg;
+ int ret;
+
+ /*
+ * TODO(gwendal): Depending on the phase function
+ * (proximity/table/body), retrieve the right threshold.
+ * For now, return the proximity threshold.
+ */
+ reg = SX9324_REG_PROX_CTRL6 + chan->channel / 2;
+ ret = regmap_read(data->regmap, reg, ®val);
+ if (ret)
+ return ret;
+
+ if (regval <= 1)
+ *val = regval;
+ else
+ *val = (regval * regval) / 2;
+
+ return IIO_VAL_INT;
+}
+
+static int sx9324_read_hysteresis(struct sx_common_data *data,
+ const struct iio_chan_spec *chan, int *val)
+{
+ unsigned int regval, pthresh;
+ int ret;
+
+ ret = sx9324_read_thresh(data, chan, &pthresh);
+ if (ret < 0)
+ return ret;
+
+ ret = regmap_read(data->regmap, SX9324_REG_PROX_CTRL5, ®val);
+ if (ret)
+ return ret;
+
+ regval = FIELD_GET(SX9324_REG_PROX_CTRL5_HYST_MASK, regval);
+ if (!regval)
+ *val = 0;
+ else
+ *val = pthresh >> (5 - regval);
+
+ return IIO_VAL_INT;
+}
+
+static int sx9324_read_far_debounce(struct sx_common_data *data, int *val)
+{
+ unsigned int regval;
+ int ret;
+
+ ret = regmap_read(data->regmap, SX9324_REG_PROX_CTRL5, ®val);
+ if (ret)
+ return ret;
+
+ regval = FIELD_GET(SX9324_REG_PROX_CTRL5_FAR_DEBOUNCE_MASK, regval);
+ if (regval)
+ *val = 1 << regval;
+ else
+ *val = 0;
+
+ return IIO_VAL_INT;
+}
+
+static int sx9324_read_close_debounce(struct sx_common_data *data, int *val)
+{
+ unsigned int regval;
+ int ret;
+
+ ret = regmap_read(data->regmap, SX9324_REG_PROX_CTRL5, ®val);
+ if (ret)
+ return ret;
+
+ regval = FIELD_GET(SX9324_REG_PROX_CTRL5_CLOSE_DEBOUNCE_MASK, regval);
+ if (regval)
+ *val = 1 << regval;
+ else
+ *val = 0;
+
+ return IIO_VAL_INT;
+}
+
+static int sx9324_read_event_val(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir,
+ enum iio_event_info info, int *val, int *val2)
+{
+ struct sx_common_data *data = iio_priv(indio_dev);
+
+ if (chan->type != IIO_PROXIMITY)
+ return -EINVAL;
+
+ switch (info) {
+ case IIO_EV_INFO_VALUE:
+ return sx9324_read_thresh(data, chan, val);
+ case IIO_EV_INFO_PERIOD:
+ switch (dir) {
+ case IIO_EV_DIR_RISING:
+ return sx9324_read_far_debounce(data, val);
+ case IIO_EV_DIR_FALLING:
+ return sx9324_read_close_debounce(data, val);
+ default:
+ return -EINVAL;
+ }
+ case IIO_EV_INFO_HYSTERESIS:
+ return sx9324_read_hysteresis(data, chan, val);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int sx9324_write_thresh(struct sx_common_data *data,
+ const struct iio_chan_spec *chan, int _val)
+{
+ unsigned int reg, val = _val;
+ int ret;
+
+ reg = SX9324_REG_PROX_CTRL6 + chan->channel / 2;
+
+ if (val >= 1)
+ val = int_sqrt(2 * val);
+
+ if (val > 0xff)
+ return -EINVAL;
+
+ mutex_lock(&data->mutex);
+ ret = regmap_write(data->regmap, reg, val);
+ mutex_unlock(&data->mutex);
+
+ return ret;
+}
+
+static int sx9324_write_hysteresis(struct sx_common_data *data,
+ const struct iio_chan_spec *chan, int _val)
+{
+ unsigned int hyst, val = _val;
+ int ret, pthresh;
+
+ ret = sx9324_read_thresh(data, chan, &pthresh);
+ if (ret < 0)
+ return ret;
+
+ if (val == 0)
+ hyst = 0;
+ else if (val >= pthresh >> 2)
+ hyst = 3;
+ else if (val >= pthresh >> 3)
+ hyst = 2;
+ else if (val >= pthresh >> 4)
+ hyst = 1;
+ else
+ return -EINVAL;
+
+ hyst = FIELD_PREP(SX9324_REG_PROX_CTRL5_HYST_MASK, hyst);
+ mutex_lock(&data->mutex);
+ ret = regmap_update_bits(data->regmap, SX9324_REG_PROX_CTRL5,
+ SX9324_REG_PROX_CTRL5_HYST_MASK, hyst);
+ mutex_unlock(&data->mutex);
+
+ return ret;
+}
+
+static int sx9324_write_far_debounce(struct sx_common_data *data, int _val)
+{
+ unsigned int regval, val = _val;
+ int ret;
+
+ if (val > 0)
+ val = ilog2(val);
+ if (!FIELD_FIT(SX9324_REG_PROX_CTRL5_FAR_DEBOUNCE_MASK, val))
+ return -EINVAL;
+
+ regval = FIELD_PREP(SX9324_REG_PROX_CTRL5_FAR_DEBOUNCE_MASK, val);
+
+ mutex_lock(&data->mutex);
+ ret = regmap_update_bits(data->regmap, SX9324_REG_PROX_CTRL5,
+ SX9324_REG_PROX_CTRL5_FAR_DEBOUNCE_MASK,
+ regval);
+ mutex_unlock(&data->mutex);
+
+ return ret;
+}
+
+static int sx9324_write_close_debounce(struct sx_common_data *data, int _val)
+{
+ unsigned int regval, val = _val;
+ int ret;
+
+ if (val > 0)
+ val = ilog2(val);
+ if (!FIELD_FIT(SX9324_REG_PROX_CTRL5_CLOSE_DEBOUNCE_MASK, val))
+ return -EINVAL;
+
+ regval = FIELD_PREP(SX9324_REG_PROX_CTRL5_CLOSE_DEBOUNCE_MASK, val);
+
+ mutex_lock(&data->mutex);
+ ret = regmap_update_bits(data->regmap, SX9324_REG_PROX_CTRL5,
+ SX9324_REG_PROX_CTRL5_CLOSE_DEBOUNCE_MASK,
+ regval);
+ mutex_unlock(&data->mutex);
+
+ return ret;
+}
+
+static int sx9324_write_event_val(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir,
+ enum iio_event_info info, int val, int val2)
+{
+ struct sx_common_data *data = iio_priv(indio_dev);
+
+ if (chan->type != IIO_PROXIMITY)
+ return -EINVAL;
+
+ switch (info) {
+ case IIO_EV_INFO_VALUE:
+ return sx9324_write_thresh(data, chan, val);
+ case IIO_EV_INFO_PERIOD:
+ switch (dir) {
+ case IIO_EV_DIR_RISING:
+ return sx9324_write_far_debounce(data, val);
+ case IIO_EV_DIR_FALLING:
+ return sx9324_write_close_debounce(data, val);
+ default:
+ return -EINVAL;
+ }
+ case IIO_EV_INFO_HYSTERESIS:
+ return sx9324_write_hysteresis(data, chan, val);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int sx9324_write_gain(struct sx_common_data *data,
+ const struct iio_chan_spec *chan, int val)
+{
+ unsigned int gain, reg;
+ int ret;
+
+ gain = ilog2(val);
+ reg = SX9324_REG_PROX_CTRL0 + chan->channel / 2;
+ gain = FIELD_PREP(SX9324_REG_PROX_CTRL0_GAIN_MASK, gain);
+
+ mutex_lock(&data->mutex);
+ ret = regmap_update_bits(data->regmap, reg,
+ SX9324_REG_PROX_CTRL0_GAIN_MASK,
+ gain);
+ mutex_unlock(&data->mutex);
+
+ return ret;
+}
+
+static int sx9324_write_raw(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, int val, int val2,
+ long mask)
+{
+ struct sx_common_data *data = iio_priv(indio_dev);
+
+ switch (mask) {
+ case IIO_CHAN_INFO_SAMP_FREQ:
+ return sx9324_set_samp_freq(data, val, val2);
+ case IIO_CHAN_INFO_HARDWAREGAIN:
+ return sx9324_write_gain(data, chan, val);
+ }
+
+ return -EINVAL;
+}
+
+/* Activate all channels and perform an initial compensation. */
+static int sx9324_init_compensation(struct iio_dev *indio_dev)
+{
+ struct sx_common_data *data = iio_priv(indio_dev);
+ unsigned int val;
+ int ret;
+
+ /* run the compensation phase on all channels */
+ ret = regmap_update_bits(data->regmap, SX9324_REG_STAT2,
+ SX9324_REG_STAT2_COMPSTAT_MASK,
+ SX9324_REG_STAT2_COMPSTAT_MASK);
+ if (ret)
+ return ret;
+
+ ret = regmap_read_poll_timeout(data->regmap, SX9324_REG_STAT2, val,
+ !(val & SX9324_REG_STAT2_COMPSTAT_MASK),
+ 20000, 2000000);
+ if (ret == -ETIMEDOUT)
+ dev_err(&data->client->dev,
+ "initial compensation timed out: 0x%02x\n",
+ val);
+ return ret;
+}
+
+static int sx9324_check_whoami(struct device *dev,
+ struct iio_dev *indio_dev)
+{
+ /*
+ * Only one sensor for this driver. Assuming the device tree
+ * is correct, just set the sensor name.
+ */
+ indio_dev->name = "sx9324";
+ return 0;
+}
+
+static const struct sx_common_chip_info sx9324_chip_info = {
+ .reg_stat = SX9324_REG_STAT0,
+ .reg_irq_msk = SX9324_REG_IRQ_MSK,
+ .reg_enable_chan = SX9324_REG_GNRL_CTRL1,
+ .reg_reset = SX9324_REG_RESET,
+
+ .mask_enable_chan = SX9324_REG_GNRL_CTRL1_PHEN_MASK,
+ .irq_msk_offset = 3,
+ .num_channels = SX9324_NUM_CHANNELS,
+
+ .ops = {
+ .read_prox_data = sx9324_read_prox_data,
+ .check_whoami = sx9324_check_whoami,
+ .init_compensation = sx9324_init_compensation,
+ .wait_for_sample = sx9324_wait_for_sample,
+ },
+
+ .iio_channels = sx9324_channels,
+ .num_iio_channels = ARRAY_SIZE(sx9324_channels),
+ .iio_info = {
+ .read_raw = sx9324_read_raw,
+ .read_avail = sx9324_read_avail,
+ .read_event_value = sx9324_read_event_val,
+ .write_event_value = sx9324_write_event_val,
+ .write_raw = sx9324_write_raw,
+ .read_event_config = sx_common_read_event_config,
+ .write_event_config = sx_common_write_event_config,
+ },
+};
+
+static int sx9324_probe(struct i2c_client *client)
+{
+ return sx_common_probe(client, &sx9324_chip_info, &sx9324_regmap_config);
+}
+
+static int __maybe_unused sx9324_suspend(struct device *dev)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+ struct sx_common_data *data = iio_priv(indio_dev);
+ unsigned int regval;
+ int ret;
+
+ disable_irq_nosync(data->client->irq);
+
+ mutex_lock(&data->mutex);
+ ret = regmap_read(data->regmap, SX9324_REG_GNRL_CTRL1, ®val);
+
+ data->suspend_ctrl =
+ FIELD_GET(SX9324_REG_GNRL_CTRL1_PHEN_MASK, regval);
+
+ if (ret < 0)
+ goto out;
+
+ /* Disable all phases, send the device to sleep. */
+ ret = regmap_write(data->regmap, SX9324_REG_GNRL_CTRL1, 0);
+
+out:
+ mutex_unlock(&data->mutex);
+ return ret;
+}
+
+static int __maybe_unused sx9324_resume(struct device *dev)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+ struct sx_common_data *data = iio_priv(indio_dev);
+ int ret;
+
+ mutex_lock(&data->mutex);
+ ret = regmap_write(data->regmap, SX9324_REG_GNRL_CTRL1,
+ data->suspend_ctrl | SX9324_REG_GNRL_CTRL1_PAUSECTRL);
+ mutex_unlock(&data->mutex);
+ if (ret)
+ return ret;
+
+ enable_irq(data->client->irq);
+ return 0;
+}
+
+static const struct dev_pm_ops sx9324_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(sx9324_suspend, sx9324_resume)
+};
+
+static const struct acpi_device_id sx9324_acpi_match[] = {
+ { "STH9324", SX9324_WHOAMI_VALUE},
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, sx9324_acpi_match);
+
+static const struct of_device_id sx9324_of_match[] = {
+ { .compatible = "semtech,sx9324", (void *)SX9324_WHOAMI_VALUE},
+ { }
+};
+MODULE_DEVICE_TABLE(of, sx9324_of_match);
+
+static const struct i2c_device_id sx9324_id[] = {
+ {"sx9324", SX9324_WHOAMI_VALUE},
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, sx9324_id);
+
+static struct i2c_driver sx9324_driver = {
+ .driver = {
+ .name = "sx9324",
+ .acpi_match_table = ACPI_PTR(sx9324_acpi_match),
+ .of_match_table = of_match_ptr(sx9324_of_match),
+ .pm = &sx9324_pm_ops,
+
+ /*
+ * Lots of i2c transfers in probe + over 200 ms waiting in
+ * sx9324_init_compensation() mean a slow probe; prefer async
+ * so we don't delay boot if we're builtin to the kernel.
+ */
+ .probe_type = PROBE_PREFER_ASYNCHRONOUS,
+ },
+ .probe_new = sx9324_probe,
+ .id_table = sx9324_id,
+};
+module_i2c_driver(sx9324_driver);
+
+MODULE_AUTHOR("Gwendal Grignou <gwendal@chromium.org>");
+MODULE_DESCRIPTION("Driver for Semtech SX9324 proximity sensor");
+MODULE_LICENSE("GPL v2");
--
2.34.1.400.ga245620fadb-goog
^ permalink raw reply related [flat|nested] 15+ messages in thread* Re: [PATCH v5 3/5] iio: proximity: Add SX9324 support
2021-12-08 0:43 ` [PATCH v5 3/5] iio: proximity: Add SX9324 support Gwendal Grignou
@ 2021-12-08 3:26 ` kernel test robot
2021-12-08 14:31 ` kernel test robot
2021-12-08 15:22 ` kernel test robot
2 siblings, 0 replies; 15+ messages in thread
From: kernel test robot @ 2021-12-08 3:26 UTC (permalink / raw)
To: Gwendal Grignou, jic23, lars, swboyd
Cc: kbuild-all, andy.shevchenko, linux-iio, devicetree, Gwendal Grignou
Hi Gwendal,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on v5.16-rc4 next-20211207]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Gwendal-Grignou/Expand-Semtech-SAR-Sensors-support/20211208-084635
base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
config: nios2-allyesconfig (https://download.01.org/0day-ci/archive/20211208/202112081125.pcOSkAMQ-lkp@intel.com/config)
compiler: nios2-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/0day-ci/linux/commit/d02716a5c3a619239e594e6ba6af2ec38fd3de3d
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Gwendal-Grignou/Expand-Semtech-SAR-Sensors-support/20211208-084635
git checkout d02716a5c3a619239e594e6ba6af2ec38fd3de3d
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=nios2 SHELL=/bin/bash drivers/iio/proximity/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
drivers/iio/proximity/sx9324.c: In function 'sx9324_phase_configuration_show':
>> drivers/iio/proximity/sx9324.c:166:16: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
166 | int i, ret, pin_idx;
| ^~~
At top level:
drivers/iio/proximity/sx9324.c:871:36: warning: 'sx9324_acpi_match' defined but not used [-Wunused-const-variable=]
871 | static const struct acpi_device_id sx9324_acpi_match[] = {
| ^~~~~~~~~~~~~~~~~
vim +/ret +166 drivers/iio/proximity/sx9324.c
158
159 static ssize_t sx9324_phase_configuration_show(struct iio_dev *indio_dev,
160 uintptr_t private,
161 const struct iio_chan_spec *chan,
162 char *buf)
163 {
164 struct sx_common_data *data = iio_priv(indio_dev);
165 unsigned int val;
> 166 int i, ret, pin_idx;
167 size_t len = 0;
168
169 ret = regmap_read(data->regmap, SX9324_REG_AFE_PH0 + chan->channel, &val);
170
171 for (i = 0; i < SX9324_NUM_PINS; i++) {
172 pin_idx = (val & SX9324_REG_AFE_PH0_PIN_MASK(i)) >> (2 * i);
173 len += scnprintf(buf + len, PAGE_SIZE - len, "%s,",
174 sx9324_cs_pin_usage[pin_idx]);
175 }
176 buf[len - 1] = '\n';
177 return len;
178 }
179
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
^ permalink raw reply [flat|nested] 15+ messages in thread* Re: [PATCH v5 3/5] iio: proximity: Add SX9324 support
@ 2021-12-08 3:26 ` kernel test robot
0 siblings, 0 replies; 15+ messages in thread
From: kernel test robot @ 2021-12-08 3:26 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 3092 bytes --]
Hi Gwendal,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on v5.16-rc4 next-20211207]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Gwendal-Grignou/Expand-Semtech-SAR-Sensors-support/20211208-084635
base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
config: nios2-allyesconfig (https://download.01.org/0day-ci/archive/20211208/202112081125.pcOSkAMQ-lkp(a)intel.com/config)
compiler: nios2-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/0day-ci/linux/commit/d02716a5c3a619239e594e6ba6af2ec38fd3de3d
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Gwendal-Grignou/Expand-Semtech-SAR-Sensors-support/20211208-084635
git checkout d02716a5c3a619239e594e6ba6af2ec38fd3de3d
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=nios2 SHELL=/bin/bash drivers/iio/proximity/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
drivers/iio/proximity/sx9324.c: In function 'sx9324_phase_configuration_show':
>> drivers/iio/proximity/sx9324.c:166:16: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
166 | int i, ret, pin_idx;
| ^~~
At top level:
drivers/iio/proximity/sx9324.c:871:36: warning: 'sx9324_acpi_match' defined but not used [-Wunused-const-variable=]
871 | static const struct acpi_device_id sx9324_acpi_match[] = {
| ^~~~~~~~~~~~~~~~~
vim +/ret +166 drivers/iio/proximity/sx9324.c
158
159 static ssize_t sx9324_phase_configuration_show(struct iio_dev *indio_dev,
160 uintptr_t private,
161 const struct iio_chan_spec *chan,
162 char *buf)
163 {
164 struct sx_common_data *data = iio_priv(indio_dev);
165 unsigned int val;
> 166 int i, ret, pin_idx;
167 size_t len = 0;
168
169 ret = regmap_read(data->regmap, SX9324_REG_AFE_PH0 + chan->channel, &val);
170
171 for (i = 0; i < SX9324_NUM_PINS; i++) {
172 pin_idx = (val & SX9324_REG_AFE_PH0_PIN_MASK(i)) >> (2 * i);
173 len += scnprintf(buf + len, PAGE_SIZE - len, "%s,",
174 sx9324_cs_pin_usage[pin_idx]);
175 }
176 buf[len - 1] = '\n';
177 return len;
178 }
179
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v5 3/5] iio: proximity: Add SX9324 support
2021-12-08 0:43 ` [PATCH v5 3/5] iio: proximity: Add SX9324 support Gwendal Grignou
@ 2021-12-08 14:31 ` kernel test robot
2021-12-08 14:31 ` kernel test robot
2021-12-08 15:22 ` kernel test robot
2 siblings, 0 replies; 15+ messages in thread
From: kernel test robot @ 2021-12-08 14:31 UTC (permalink / raw)
To: Gwendal Grignou, jic23, lars, swboyd
Cc: llvm, kbuild-all, andy.shevchenko, linux-iio, devicetree,
Gwendal Grignou
Hi Gwendal,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on v5.16-rc4 next-20211208]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Gwendal-Grignou/Expand-Semtech-SAR-Sensors-support/20211208-084635
base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
config: arm-randconfig-c002-20211208 (https://download.01.org/0day-ci/archive/20211208/202112082214.pv3MKwkH-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 097a1cb1d5ebb3a0ec4bcaed8ba3ff6a8e33c00a)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm cross compiling tool for clang build
# apt-get install binutils-arm-linux-gnueabi
# https://github.com/0day-ci/linux/commit/d02716a5c3a619239e594e6ba6af2ec38fd3de3d
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Gwendal-Grignou/Expand-Semtech-SAR-Sensors-support/20211208-084635
git checkout d02716a5c3a619239e594e6ba6af2ec38fd3de3d
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/iio/proximity/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/iio/proximity/sx9324.c:166:9: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
int i, ret, pin_idx;
^
1 warning generated.
vim +/ret +166 drivers/iio/proximity/sx9324.c
158
159 static ssize_t sx9324_phase_configuration_show(struct iio_dev *indio_dev,
160 uintptr_t private,
161 const struct iio_chan_spec *chan,
162 char *buf)
163 {
164 struct sx_common_data *data = iio_priv(indio_dev);
165 unsigned int val;
> 166 int i, ret, pin_idx;
167 size_t len = 0;
168
169 ret = regmap_read(data->regmap, SX9324_REG_AFE_PH0 + chan->channel, &val);
170
171 for (i = 0; i < SX9324_NUM_PINS; i++) {
172 pin_idx = (val & SX9324_REG_AFE_PH0_PIN_MASK(i)) >> (2 * i);
173 len += scnprintf(buf + len, PAGE_SIZE - len, "%s,",
174 sx9324_cs_pin_usage[pin_idx]);
175 }
176 buf[len - 1] = '\n';
177 return len;
178 }
179
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
^ permalink raw reply [flat|nested] 15+ messages in thread* Re: [PATCH v5 3/5] iio: proximity: Add SX9324 support
@ 2021-12-08 14:31 ` kernel test robot
0 siblings, 0 replies; 15+ messages in thread
From: kernel test robot @ 2021-12-08 14:31 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 2934 bytes --]
Hi Gwendal,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on v5.16-rc4 next-20211208]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Gwendal-Grignou/Expand-Semtech-SAR-Sensors-support/20211208-084635
base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
config: arm-randconfig-c002-20211208 (https://download.01.org/0day-ci/archive/20211208/202112082214.pv3MKwkH-lkp(a)intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 097a1cb1d5ebb3a0ec4bcaed8ba3ff6a8e33c00a)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm cross compiling tool for clang build
# apt-get install binutils-arm-linux-gnueabi
# https://github.com/0day-ci/linux/commit/d02716a5c3a619239e594e6ba6af2ec38fd3de3d
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Gwendal-Grignou/Expand-Semtech-SAR-Sensors-support/20211208-084635
git checkout d02716a5c3a619239e594e6ba6af2ec38fd3de3d
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/iio/proximity/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/iio/proximity/sx9324.c:166:9: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
int i, ret, pin_idx;
^
1 warning generated.
vim +/ret +166 drivers/iio/proximity/sx9324.c
158
159 static ssize_t sx9324_phase_configuration_show(struct iio_dev *indio_dev,
160 uintptr_t private,
161 const struct iio_chan_spec *chan,
162 char *buf)
163 {
164 struct sx_common_data *data = iio_priv(indio_dev);
165 unsigned int val;
> 166 int i, ret, pin_idx;
167 size_t len = 0;
168
169 ret = regmap_read(data->regmap, SX9324_REG_AFE_PH0 + chan->channel, &val);
170
171 for (i = 0; i < SX9324_NUM_PINS; i++) {
172 pin_idx = (val & SX9324_REG_AFE_PH0_PIN_MASK(i)) >> (2 * i);
173 len += scnprintf(buf + len, PAGE_SIZE - len, "%s,",
174 sx9324_cs_pin_usage[pin_idx]);
175 }
176 buf[len - 1] = '\n';
177 return len;
178 }
179
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v5 3/5] iio: proximity: Add SX9324 support
2021-12-08 0:43 ` [PATCH v5 3/5] iio: proximity: Add SX9324 support Gwendal Grignou
@ 2021-12-08 15:22 ` kernel test robot
2021-12-08 14:31 ` kernel test robot
2021-12-08 15:22 ` kernel test robot
2 siblings, 0 replies; 15+ messages in thread
From: kernel test robot @ 2021-12-08 15:22 UTC (permalink / raw)
To: Gwendal Grignou, jic23, lars, swboyd
Cc: llvm, kbuild-all, andy.shevchenko, linux-iio, devicetree,
Gwendal Grignou
Hi Gwendal,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on v5.16-rc4 next-20211208]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Gwendal-Grignou/Expand-Semtech-SAR-Sensors-support/20211208-084635
base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
config: riscv-randconfig-c006-20211208 (https://download.01.org/0day-ci/archive/20211208/202112082323.CEzDjrR6-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 097a1cb1d5ebb3a0ec4bcaed8ba3ff6a8e33c00a)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://github.com/0day-ci/linux/commit/d02716a5c3a619239e594e6ba6af2ec38fd3de3d
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Gwendal-Grignou/Expand-Semtech-SAR-Sensors-support/20211208-084635
git checkout d02716a5c3a619239e594e6ba6af2ec38fd3de3d
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/iio/proximity/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
drivers/iio/proximity/sx9324.c:166:9: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
int i, ret, pin_idx;
^
>> drivers/iio/proximity/sx9324.c:871:36: warning: unused variable 'sx9324_acpi_match' [-Wunused-const-variable]
static const struct acpi_device_id sx9324_acpi_match[] = {
^
2 warnings generated.
vim +/sx9324_acpi_match +871 drivers/iio/proximity/sx9324.c
870
> 871 static const struct acpi_device_id sx9324_acpi_match[] = {
872 { "STH9324", SX9324_WHOAMI_VALUE},
873 { }
874 };
875 MODULE_DEVICE_TABLE(acpi, sx9324_acpi_match);
876
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
^ permalink raw reply [flat|nested] 15+ messages in thread* Re: [PATCH v5 3/5] iio: proximity: Add SX9324 support
@ 2021-12-08 15:22 ` kernel test robot
0 siblings, 0 replies; 15+ messages in thread
From: kernel test robot @ 2021-12-08 15:22 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 2604 bytes --]
Hi Gwendal,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on v5.16-rc4 next-20211208]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Gwendal-Grignou/Expand-Semtech-SAR-Sensors-support/20211208-084635
base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
config: riscv-randconfig-c006-20211208 (https://download.01.org/0day-ci/archive/20211208/202112082323.CEzDjrR6-lkp(a)intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 097a1cb1d5ebb3a0ec4bcaed8ba3ff6a8e33c00a)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://github.com/0day-ci/linux/commit/d02716a5c3a619239e594e6ba6af2ec38fd3de3d
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Gwendal-Grignou/Expand-Semtech-SAR-Sensors-support/20211208-084635
git checkout d02716a5c3a619239e594e6ba6af2ec38fd3de3d
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/iio/proximity/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
drivers/iio/proximity/sx9324.c:166:9: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
int i, ret, pin_idx;
^
>> drivers/iio/proximity/sx9324.c:871:36: warning: unused variable 'sx9324_acpi_match' [-Wunused-const-variable]
static const struct acpi_device_id sx9324_acpi_match[] = {
^
2 warnings generated.
vim +/sx9324_acpi_match +871 drivers/iio/proximity/sx9324.c
870
> 871 static const struct acpi_device_id sx9324_acpi_match[] = {
872 { "STH9324", SX9324_WHOAMI_VALUE},
873 { }
874 };
875 MODULE_DEVICE_TABLE(acpi, sx9324_acpi_match);
876
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
^ permalink raw reply [flat|nested] 15+ messages in thread
* [PATCH v5 4/5] dt-bindings: iio: Add sx9324 binding
2021-12-08 0:43 [PATCH v5 0/5] Expand Semtech SAR Sensors support Gwendal Grignou
` (2 preceding siblings ...)
2021-12-08 0:43 ` [PATCH v5 3/5] iio: proximity: Add SX9324 support Gwendal Grignou
@ 2021-12-08 0:43 ` Gwendal Grignou
2021-12-08 4:42 ` Stephen Boyd
2021-12-08 13:44 ` Rob Herring
2021-12-08 0:43 ` [PATCH v5 5/5] iio: sx9324: Add dt_binding support Gwendal Grignou
4 siblings, 2 replies; 15+ messages in thread
From: Gwendal Grignou @ 2021-12-08 0:43 UTC (permalink / raw)
To: jic23, lars, swboyd
Cc: andy.shevchenko, linux-iio, devicetree, Gwendal Grignou
Similar to SX9310, add biddings to setup sx9324 hardware properties.
SX9324 is a little different, introduce 4 phases to be configured in 2
pairs over 3 antennas.
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
---
Changes in v5:
- Use consistent field naming, prefixed with phX.
Changes in v4:
- Use const instead of single enum
- Specify ph0-pin better
- Recopy type information for phX-pin
- Fix cut and paste errors.
Changes in v3:
- Remove duplicate information.
- Use intervals instead of enum.
- Fix filter description.
Changes in v2:
- Fix interrupt documentation wording.
.../iio/proximity/semtech,sx9324.yaml | 161 ++++++++++++++++++
1 file changed, 161 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml
diff --git a/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml b/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml
new file mode 100644
index 00000000000000..ac9581b0d31364
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml
@@ -0,0 +1,161 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/proximity/semtech,sx9324.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Semtech's SX9324 capacitive proximity sensor
+
+maintainers:
+ - Gwendal Grignou <gwendal@chromium.org>
+ - Daniel Campello <campello@chromium.org>
+
+description: |
+ Semtech's SX9324 proximity sensor.
+
+properties:
+ compatible:
+ const: semtech,sx9324
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ description:
+ Generated by device to announce preceding read request has finished
+ and data is available or that a close/far proximity event has happened.
+ maxItems: 1
+
+ vdd-supply:
+ description: Main power supply
+
+ svdd-supply:
+ description: Host interface power supply
+
+ "#io-channel-cells":
+ const: 1
+
+ semtech,ph0-pin:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ description: |
+ Array of 3 entries. Index represent the id of the CS pin.
+ Value indicates how each CS pin is used during phase 0.
+ Each of the 3 pins have the following value -
+ 0 : unused (high impedance)
+ 1 : measured input
+ 2 : dynamic shield
+ 3 : grounded.
+ For instance, CS0 measured, CS1 shield and CS2 ground is [1, 2, 3]
+ items:
+ enum: [ 0, 1, 2, 3 ]
+ minItems: 3
+ maxItems: 3
+
+ semtech,ph1-pin:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ description: Same as ph0-pin for phase 1.
+ items:
+ enum: [ 0, 1, 2, 3 ]
+ minItems: 3
+ maxItems: 3
+
+ semtech,ph2-pin:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ description: Same as ph0-pin for phase 2.
+ items:
+ enum: [ 0, 1, 2, 3 ]
+ minItems: 3
+ maxItems: 3
+
+ semtech,ph3-pin:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ description: Same as ph0-pin for phase 3.
+ items:
+ enum: [ 0, 1, 2, 3 ]
+ minItems: 3
+ maxItems: 3
+
+
+ semtech,ph01-resolution:
+ $ref: /schemas/types.yaml#definitions/uint32
+ enum: [8, 16, 32, 64, 128, 256, 512, 1024]
+ description:
+ Capacitance measurement resolution. For phase 0 and 1.
+ Higher the number, higher the resolution.
+ default: 128
+
+ semtech,ph23-resolution:
+ $ref: /schemas/types.yaml#definitions/uint32
+ enum: [8, 16, 32, 64, 128, 256, 512, 1024]
+ description:
+ Capacitance measurement resolution. For phase 2 and 3
+ default: 128
+
+ semtech,startup-sensor:
+ $ref: /schemas/types.yaml#definitions/uint32
+ enum: [0, 1, 2, 3]
+ default: 0
+ description: |
+ Phase used for start-up proximity detection.
+ It is used when we enable a phase to remove static offset and measure
+ only capacitance changes introduced by the user.
+
+ semtech,ph01-proxraw-strength:
+ $ref: /schemas/types.yaml#definitions/uint32
+ min: 0
+ max: 7
+ default: 1
+ description:
+ PROXRAW filter strength for phase 0 and 1. A value of 0 represents off,
+ and other values represent 1-1/2^N.
+
+ semtech,ph23-proxraw-strength:
+ $ref: /schemas/types.yaml#definitions/uint32
+ min: 0
+ max: 7
+ default: 1
+ description:
+ Same as proxraw-strength01, for phase 2 and 3.
+
+ semtech,avg-pos-strength:
+ $ref: /schemas/types.yaml#definitions/uint32
+ enum: [0, 16, 64, 128, 256, 512, 1024, 4294967295]
+ default: 16
+ description: |
+ Average positive filter strength. A value of 0 represents off and
+ UINT_MAX (4294967295) represents infinite. Other values
+ represent 1-1/N.
+
+required:
+ - compatible
+ - reg
+ - "#io-channel-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ proximity@28 {
+ compatible = "semtech,sx9324";
+ reg = <0x28>;
+ interrupt-parent = <&pio>;
+ interrupts = <5 IRQ_TYPE_LEVEL_LOW 5>;
+ vdd-supply = <&pp3300_a>;
+ svdd-supply = <&pp1800_prox>;
+ #io-channel-cells = <1>;
+ semtech,ph0-pin = <1, 2, 3>;
+ semtech,ph1-pin = <3, 2, 1>;
+ semtech,ph2-pin = <1, 2, 3>;
+ semtech,ph3-pin = <3, 2, 1>;
+ semtech,ph01-resolution = 2;
+ semtech,ph23-resolution = 2;
+ semtech,startup-sensor = <1>;
+ semtech,ph01-proxraw-strength = <2>;
+ semtech,ph23-proxraw-strength = <2>;
+ semtech,avg-pos-strength = <64>;
+ };
+ };
--
2.34.1.400.ga245620fadb-goog
^ permalink raw reply related [flat|nested] 15+ messages in thread* Re: [PATCH v5 4/5] dt-bindings: iio: Add sx9324 binding
2021-12-08 0:43 ` [PATCH v5 4/5] dt-bindings: iio: Add sx9324 binding Gwendal Grignou
@ 2021-12-08 4:42 ` Stephen Boyd
2021-12-08 7:22 ` Gwendal Grignou
2021-12-08 13:44 ` Rob Herring
1 sibling, 1 reply; 15+ messages in thread
From: Stephen Boyd @ 2021-12-08 4:42 UTC (permalink / raw)
To: Gwendal Grignou, jic23, lars, robh+dt
Cc: andy.shevchenko, linux-iio, devicetree
+Rob *crosses fingers*
Quoting Gwendal Grignou (2021-12-07 16:43:10)
> Similar to SX9310, add biddings to setup sx9324 hardware properties.
> SX9324 is a little different, introduce 4 phases to be configured in 2
> pairs over 3 antennas.
>
> Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
> ---
> Changes in v5:
> - Use consistent field naming, prefixed with phX.
>
> Changes in v4:
> - Use const instead of single enum
> - Specify ph0-pin better
> - Recopy type information for phX-pin
> - Fix cut and paste errors.
>
> Changes in v3:
> - Remove duplicate information.
> - Use intervals instead of enum.
> - Fix filter description.
>
> Changes in v2:
> - Fix interrupt documentation wording.
>
> .../iio/proximity/semtech,sx9324.yaml | 161 ++++++++++++++++++
Please add Rob for dt binding review. I'm not sure if the
semi-autonomous robot runs without Cc robh+dt
> 1 file changed, 161 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml
>
> diff --git a/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml b/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml
> new file mode 100644
> index 00000000000000..ac9581b0d31364
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml
> @@ -0,0 +1,161 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/proximity/semtech,sx9324.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Semtech's SX9324 capacitive proximity sensor
> +
> +maintainers:
> + - Gwendal Grignou <gwendal@chromium.org>
> + - Daniel Campello <campello@chromium.org>
> +
> +description: |
> + Semtech's SX9324 proximity sensor.
> +
> +properties:
> + compatible:
> + const: semtech,sx9324
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + description:
> + Generated by device to announce preceding read request has finished
> + and data is available or that a close/far proximity event has happened.
> + maxItems: 1
> +
> + vdd-supply:
> + description: Main power supply
> +
> + svdd-supply:
> + description: Host interface power supply
> +
> + "#io-channel-cells":
> + const: 1
> +
> + semtech,ph0-pin:
> + $ref: /schemas/types.yaml#/definitions/uint32-array
> + description: |
> + Array of 3 entries. Index represent the id of the CS pin.
> + Value indicates how each CS pin is used during phase 0.
> + Each of the 3 pins have the following value -
> + 0 : unused (high impedance)
> + 1 : measured input
> + 2 : dynamic shield
> + 3 : grounded.
> + For instance, CS0 measured, CS1 shield and CS2 ground is [1, 2, 3]
> + items:
> + enum: [ 0, 1, 2, 3 ]
> + minItems: 3
> + maxItems: 3
> +
> + semtech,ph1-pin:
> + $ref: /schemas/types.yaml#/definitions/uint32-array
> + description: Same as ph0-pin for phase 1.
> + items:
> + enum: [ 0, 1, 2, 3 ]
> + minItems: 3
> + maxItems: 3
> +
> + semtech,ph2-pin:
> + $ref: /schemas/types.yaml#/definitions/uint32-array
> + description: Same as ph0-pin for phase 2.
> + items:
> + enum: [ 0, 1, 2, 3 ]
> + minItems: 3
> + maxItems: 3
> +
> + semtech,ph3-pin:
> + $ref: /schemas/types.yaml#/definitions/uint32-array
> + description: Same as ph0-pin for phase 3.
> + items:
> + enum: [ 0, 1, 2, 3 ]
> + minItems: 3
> + maxItems: 3
> +
> +
> + semtech,ph01-resolution:
> + $ref: /schemas/types.yaml#definitions/uint32
> + enum: [8, 16, 32, 64, 128, 256, 512, 1024]
> + description:
> + Capacitance measurement resolution. For phase 0 and 1.
> + Higher the number, higher the resolution.
> + default: 128
> +
> + semtech,ph23-resolution:
> + $ref: /schemas/types.yaml#definitions/uint32
> + enum: [8, 16, 32, 64, 128, 256, 512, 1024]
> + description:
> + Capacitance measurement resolution. For phase 2 and 3
> + default: 128
> +
> + semtech,startup-sensor:
> + $ref: /schemas/types.yaml#definitions/uint32
> + enum: [0, 1, 2, 3]
> + default: 0
> + description: |
> + Phase used for start-up proximity detection.
> + It is used when we enable a phase to remove static offset and measure
> + only capacitance changes introduced by the user.
> +
> + semtech,ph01-proxraw-strength:
> + $ref: /schemas/types.yaml#definitions/uint32
> + min: 0
> + max: 7
> + default: 1
> + description:
> + PROXRAW filter strength for phase 0 and 1. A value of 0 represents off,
> + and other values represent 1-1/2^N.
> +
> + semtech,ph23-proxraw-strength:
> + $ref: /schemas/types.yaml#definitions/uint32
> + min: 0
> + max: 7
> + default: 1
> + description:
> + Same as proxraw-strength01, for phase 2 and 3.
We could have a single property then that uses index 0 for phase 0 and 1
and index 1 for phase 2 and 3 if we're worried about them being
different between the two joined phases. Same comment applies to the
resolution.
> +
> + semtech,avg-pos-strength:
> + $ref: /schemas/types.yaml#definitions/uint32
> + enum: [0, 16, 64, 128, 256, 512, 1024, 4294967295]
> + default: 16
> + description: |
> + Average positive filter strength. A value of 0 represents off and
> + UINT_MAX (4294967295) represents infinite. Other values
> + represent 1-1/N.
> +
> +required:
> + - compatible
> + - reg
> + - "#io-channel-cells"
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/irq.h>
> + i2c {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + proximity@28 {
> + compatible = "semtech,sx9324";
> + reg = <0x28>;
> + interrupt-parent = <&pio>;
> + interrupts = <5 IRQ_TYPE_LEVEL_LOW 5>;
> + vdd-supply = <&pp3300_a>;
> + svdd-supply = <&pp1800_prox>;
> + #io-channel-cells = <1>;
> + semtech,ph0-pin = <1, 2, 3>;
> + semtech,ph1-pin = <3, 2, 1>;
> + semtech,ph2-pin = <1, 2, 3>;
> + semtech,ph3-pin = <3, 2, 1>;
The comma should be removed. Have you run 'make dt_binding_check'?
> + semtech,ph01-resolution = 2;
> + semtech,ph23-resolution = 2;
> + semtech,startup-sensor = <1>;
> + semtech,ph01-proxraw-strength = <2>;
> + semtech,ph23-proxraw-strength = <2>;
> + semtech,avg-pos-strength = <64>;
> + };
> + };
^ permalink raw reply [flat|nested] 15+ messages in thread* Re: [PATCH v5 4/5] dt-bindings: iio: Add sx9324 binding
2021-12-08 4:42 ` Stephen Boyd
@ 2021-12-08 7:22 ` Gwendal Grignou
0 siblings, 0 replies; 15+ messages in thread
From: Gwendal Grignou @ 2021-12-08 7:22 UTC (permalink / raw)
To: Stephen Boyd; +Cc: jic23, lars, robh+dt, andy.shevchenko, linux-iio, devicetree
On Tue, Dec 7, 2021 at 8:42 PM Stephen Boyd <swboyd@chromium.org> wrote:
>
> +Rob *crosses fingers*
>
> Quoting Gwendal Grignou (2021-12-07 16:43:10)
> > Similar to SX9310, add biddings to setup sx9324 hardware properties.
> > SX9324 is a little different, introduce 4 phases to be configured in 2
> > pairs over 3 antennas.
> >
> > Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
> > ---
> > Changes in v5:
> > - Use consistent field naming, prefixed with phX.
> >
> > Changes in v4:
> > - Use const instead of single enum
> > - Specify ph0-pin better
> > - Recopy type information for phX-pin
> > - Fix cut and paste errors.
> >
> > Changes in v3:
> > - Remove duplicate information.
> > - Use intervals instead of enum.
> > - Fix filter description.
> >
> > Changes in v2:
> > - Fix interrupt documentation wording.
> >
> > .../iio/proximity/semtech,sx9324.yaml | 161 ++++++++++++++++++
>
> Please add Rob for dt binding review. I'm not sure if the
> semi-autonomous robot runs without Cc robh+dt
>
> > 1 file changed, 161 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml b/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml
> > new file mode 100644
> > index 00000000000000..ac9581b0d31364
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml
> > @@ -0,0 +1,161 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/iio/proximity/semtech,sx9324.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Semtech's SX9324 capacitive proximity sensor
> > +
> > +maintainers:
> > + - Gwendal Grignou <gwendal@chromium.org>
> > + - Daniel Campello <campello@chromium.org>
> > +
> > +description: |
> > + Semtech's SX9324 proximity sensor.
> > +
> > +properties:
> > + compatible:
> > + const: semtech,sx9324
> > +
> > + reg:
> > + maxItems: 1
> > +
> > + interrupts:
> > + description:
> > + Generated by device to announce preceding read request has finished
> > + and data is available or that a close/far proximity event has happened.
> > + maxItems: 1
> > +
> > + vdd-supply:
> > + description: Main power supply
> > +
> > + svdd-supply:
> > + description: Host interface power supply
> > +
> > + "#io-channel-cells":
> > + const: 1
> > +
> > + semtech,ph0-pin:
> > + $ref: /schemas/types.yaml#/definitions/uint32-array
> > + description: |
> > + Array of 3 entries. Index represent the id of the CS pin.
> > + Value indicates how each CS pin is used during phase 0.
> > + Each of the 3 pins have the following value -
> > + 0 : unused (high impedance)
> > + 1 : measured input
> > + 2 : dynamic shield
> > + 3 : grounded.
> > + For instance, CS0 measured, CS1 shield and CS2 ground is [1, 2, 3]
> > + items:
> > + enum: [ 0, 1, 2, 3 ]
> > + minItems: 3
> > + maxItems: 3
> > +
> > + semtech,ph1-pin:
> > + $ref: /schemas/types.yaml#/definitions/uint32-array
> > + description: Same as ph0-pin for phase 1.
> > + items:
> > + enum: [ 0, 1, 2, 3 ]
> > + minItems: 3
> > + maxItems: 3
> > +
> > + semtech,ph2-pin:
> > + $ref: /schemas/types.yaml#/definitions/uint32-array
> > + description: Same as ph0-pin for phase 2.
> > + items:
> > + enum: [ 0, 1, 2, 3 ]
> > + minItems: 3
> > + maxItems: 3
> > +
> > + semtech,ph3-pin:
> > + $ref: /schemas/types.yaml#/definitions/uint32-array
> > + description: Same as ph0-pin for phase 3.
> > + items:
> > + enum: [ 0, 1, 2, 3 ]
> > + minItems: 3
> > + maxItems: 3
> > +
> > +
> > + semtech,ph01-resolution:
> > + $ref: /schemas/types.yaml#definitions/uint32
> > + enum: [8, 16, 32, 64, 128, 256, 512, 1024]
> > + description:
> > + Capacitance measurement resolution. For phase 0 and 1.
> > + Higher the number, higher the resolution.
> > + default: 128
> > +
> > + semtech,ph23-resolution:
> > + $ref: /schemas/types.yaml#definitions/uint32
> > + enum: [8, 16, 32, 64, 128, 256, 512, 1024]
> > + description:
> > + Capacitance measurement resolution. For phase 2 and 3
> > + default: 128
> > +
> > + semtech,startup-sensor:
> > + $ref: /schemas/types.yaml#definitions/uint32
> > + enum: [0, 1, 2, 3]
> > + default: 0
> > + description: |
> > + Phase used for start-up proximity detection.
> > + It is used when we enable a phase to remove static offset and measure
> > + only capacitance changes introduced by the user.
> > +
> > + semtech,ph01-proxraw-strength:
> > + $ref: /schemas/types.yaml#definitions/uint32
> > + min: 0
> > + max: 7
> > + default: 1
> > + description:
> > + PROXRAW filter strength for phase 0 and 1. A value of 0 represents off,
> > + and other values represent 1-1/2^N.
> > +
> > + semtech,ph23-proxraw-strength:
> > + $ref: /schemas/types.yaml#definitions/uint32
> > + min: 0
> > + max: 7
> > + default: 1
> > + description:
> > + Same as proxraw-strength01, for phase 2 and 3.
>
> We could have a single property then that uses index 0 for phase 0 and 1
> and index 1 for phase 2 and 3 if we're worried about them being
> different between the two joined phases. Same comment applies to the
> resolution.
>
> > +
> > + semtech,avg-pos-strength:
> > + $ref: /schemas/types.yaml#definitions/uint32
> > + enum: [0, 16, 64, 128, 256, 512, 1024, 4294967295]
> > + default: 16
> > + description: |
> > + Average positive filter strength. A value of 0 represents off and
> > + UINT_MAX (4294967295) represents infinite. Other values
> > + represent 1-1/N.
> > +
> > +required:
> > + - compatible
> > + - reg
> > + - "#io-channel-cells"
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > + - |
> > + #include <dt-bindings/interrupt-controller/irq.h>
> > + i2c {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + proximity@28 {
> > + compatible = "semtech,sx9324";
> > + reg = <0x28>;
> > + interrupt-parent = <&pio>;
> > + interrupts = <5 IRQ_TYPE_LEVEL_LOW 5>;
> > + vdd-supply = <&pp3300_a>;
> > + svdd-supply = <&pp1800_prox>;
> > + #io-channel-cells = <1>;
> > + semtech,ph0-pin = <1, 2, 3>;
> > + semtech,ph1-pin = <3, 2, 1>;
> > + semtech,ph2-pin = <1, 2, 3>;
> > + semtech,ph3-pin = <3, 2, 1>;
>
> The comma should be removed. Have you run 'make dt_binding_check'?
I did not, and it spotted a lot of errors. I will resend this patch.
>
> > + semtech,ph01-resolution = 2;
> > + semtech,ph23-resolution = 2;
> > + semtech,startup-sensor = <1>;
> > + semtech,ph01-proxraw-strength = <2>;
> > + semtech,ph23-proxraw-strength = <2>;
> > + semtech,avg-pos-strength = <64>;
> > + };
> > + };
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v5 4/5] dt-bindings: iio: Add sx9324 binding
2021-12-08 0:43 ` [PATCH v5 4/5] dt-bindings: iio: Add sx9324 binding Gwendal Grignou
2021-12-08 4:42 ` Stephen Boyd
@ 2021-12-08 13:44 ` Rob Herring
1 sibling, 0 replies; 15+ messages in thread
From: Rob Herring @ 2021-12-08 13:44 UTC (permalink / raw)
To: Gwendal Grignou
Cc: swboyd, linux-iio, devicetree, lars, andy.shevchenko, jic23
On Tue, 07 Dec 2021 16:43:10 -0800, Gwendal Grignou wrote:
> Similar to SX9310, add biddings to setup sx9324 hardware properties.
> SX9324 is a little different, introduce 4 phases to be configured in 2
> pairs over 3 antennas.
>
> Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
> ---
> Changes in v5:
> - Use consistent field naming, prefixed with phX.
>
> Changes in v4:
> - Use const instead of single enum
> - Specify ph0-pin better
> - Recopy type information for phX-pin
> - Fix cut and paste errors.
>
> Changes in v3:
> - Remove duplicate information.
> - Use intervals instead of enum.
> - Fix filter description.
>
> Changes in v2:
> - Fix interrupt documentation wording.
>
> .../iio/proximity/semtech,sx9324.yaml | 161 ++++++++++++++++++
> 1 file changed, 161 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml
>
My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):
yamllint warnings/errors:
dtschema/dtc warnings/errors:
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml: properties:semtech,ph01-proxraw-strength: 'min' is not one of ['$ref', 'additionalItems', 'additionalProperties', 'allOf', 'anyOf', 'const', 'contains', 'default', 'dependencies', 'dependentRequired', 'dependentSchemas', 'deprecated', 'description', 'else', 'enum', 'exclusiveMaximum', 'exclusiveMinimum', 'items', 'if', 'minItems', 'minimum', 'maxItems', 'maximum', 'multipleOf', 'not', 'oneOf', 'pattern', 'patternProperties', 'properties', 'required', 'then', 'type', 'typeSize', 'unevaluatedProperties', 'uniqueItems']
from schema $id: http://devicetree.org/meta-schemas/keywords.yaml#
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml: properties:semtech,ph01-proxraw-strength: 'max' is not one of ['$ref', 'additionalItems', 'additionalProperties', 'allOf', 'anyOf', 'const', 'contains', 'default', 'dependencies', 'dependentRequired', 'dependentSchemas', 'deprecated', 'description', 'else', 'enum', 'exclusiveMaximum', 'exclusiveMinimum', 'items', 'if', 'minItems', 'minimum', 'maxItems', 'maximum', 'multipleOf', 'not', 'oneOf', 'pattern', 'patternProperties', 'properties', 'required', 'then', 'type', 'typeSize', 'unevaluatedProperties', 'uniqueItems']
from schema $id: http://devicetree.org/meta-schemas/keywords.yaml#
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml: properties:semtech,ph23-proxraw-strength: 'min' is not one of ['$ref', 'additionalItems', 'additionalProperties', 'allOf', 'anyOf', 'const', 'contains', 'default', 'dependencies', 'dependentRequired', 'dependentSchemas', 'deprecated', 'description', 'else', 'enum', 'exclusiveMaximum', 'exclusiveMinimum', 'items', 'if', 'minItems', 'minimum', 'maxItems', 'maximum', 'multipleOf', 'not', 'oneOf', 'pattern', 'patternProperties', 'properties', 'required', 'then', 'type', 'typeSize', 'unevaluatedProperties', 'uniqueItems']
from schema $id: http://devicetree.org/meta-schemas/keywords.yaml#
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml: properties:semtech,ph23-proxraw-strength: 'max' is not one of ['$ref', 'additionalItems', 'additionalProperties', 'allOf', 'anyOf', 'const', 'contains', 'default', 'dependencies', 'dependentRequired', 'dependentSchemas', 'deprecated', 'description', 'else', 'enum', 'exclusiveMaximum', 'exclusiveMinimum', 'items', 'if', 'minItems', 'minimum', 'maxItems', 'maximum', 'multipleOf', 'not', 'oneOf', 'pattern', 'patternProperties', 'properties', 'required', 'then', 'type', 'typeSize', 'unevaluatedProperties', 'uniqueItems']
from schema $id: http://devicetree.org/meta-schemas/keywords.yaml#
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml: properties:semtech,avg-pos-strength: 'oneOf' conditional failed, one must be fixed:
'type' is a required property
hint: A vendor boolean property can use "type: boolean"
Additional properties are not allowed ('default', 'enum', '$ref' were unexpected)
hint: A vendor boolean property can use "type: boolean"
Additional properties are not allowed ('default', '$ref' were unexpected)
hint: A vendor string property with exact values has an implicit type
'/schemas/types.yaml#definitions/uint32' does not match 'types.yaml#/definitions/'
hint: A vendor property needs a $ref to types.yaml
0 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
16 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
64 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
128 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
256 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
512 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
1024 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
4294967295 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
hint: Vendor specific properties must have a type and description unless they have a defined, common suffix.
from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml: properties:semtech,ph01-proxraw-strength: 'oneOf' conditional failed, one must be fixed:
'type' is a required property
hint: A vendor boolean property can use "type: boolean"
Additional properties are not allowed ('min', 'max', 'default', '$ref' were unexpected)
hint: A vendor boolean property can use "type: boolean"
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml: properties:semtech,ph01-proxraw-strength: 'oneOf' conditional failed, one must be fixed:
'enum' is a required property
'const' is a required property
hint: A vendor string property with exact values has an implicit type
from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
'/schemas/types.yaml#definitions/uint32' does not match 'types.yaml#/definitions/'
hint: A vendor property needs a $ref to types.yaml
hint: Vendor specific properties must have a type and description unless they have a defined, common suffix.
from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml: properties:semtech,ph23-resolution: 'oneOf' conditional failed, one must be fixed:
'type' is a required property
hint: A vendor boolean property can use "type: boolean"
Additional properties are not allowed ('default', 'enum', '$ref' were unexpected)
hint: A vendor boolean property can use "type: boolean"
Additional properties are not allowed ('default', '$ref' were unexpected)
hint: A vendor string property with exact values has an implicit type
'/schemas/types.yaml#definitions/uint32' does not match 'types.yaml#/definitions/'
hint: A vendor property needs a $ref to types.yaml
8 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
16 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
32 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
64 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
128 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
256 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
512 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
1024 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
hint: Vendor specific properties must have a type and description unless they have a defined, common suffix.
from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml: properties:semtech,ph23-proxraw-strength: 'oneOf' conditional failed, one must be fixed:
'type' is a required property
hint: A vendor boolean property can use "type: boolean"
Additional properties are not allowed ('min', 'max', 'default', '$ref' were unexpected)
hint: A vendor boolean property can use "type: boolean"
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml: properties:semtech,ph23-proxraw-strength: 'oneOf' conditional failed, one must be fixed:
'enum' is a required property
'const' is a required property
hint: A vendor string property with exact values has an implicit type
from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
'/schemas/types.yaml#definitions/uint32' does not match 'types.yaml#/definitions/'
hint: A vendor property needs a $ref to types.yaml
hint: Vendor specific properties must have a type and description unless they have a defined, common suffix.
from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml: properties:semtech,ph01-resolution: 'oneOf' conditional failed, one must be fixed:
'type' is a required property
hint: A vendor boolean property can use "type: boolean"
Additional properties are not allowed ('default', 'enum', '$ref' were unexpected)
hint: A vendor boolean property can use "type: boolean"
Additional properties are not allowed ('default', '$ref' were unexpected)
hint: A vendor string property with exact values has an implicit type
'/schemas/types.yaml#definitions/uint32' does not match 'types.yaml#/definitions/'
hint: A vendor property needs a $ref to types.yaml
8 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
16 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
32 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
64 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
128 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
256 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
512 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
1024 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
hint: Vendor specific properties must have a type and description unless they have a defined, common suffix.
from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml: properties:semtech,startup-sensor: 'oneOf' conditional failed, one must be fixed:
'type' is a required property
hint: A vendor boolean property can use "type: boolean"
Additional properties are not allowed ('default', 'enum', '$ref' were unexpected)
hint: A vendor boolean property can use "type: boolean"
Additional properties are not allowed ('default', '$ref' were unexpected)
hint: A vendor string property with exact values has an implicit type
'/schemas/types.yaml#definitions/uint32' does not match 'types.yaml#/definitions/'
hint: A vendor property needs a $ref to types.yaml
0 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
1 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
2 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
3 is not of type 'string'
hint: A vendor string property with exact values has an implicit type
hint: Vendor specific properties must have a type and description unless they have a defined, common suffix.
from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml: ignoring, error in schema: properties: semtech,ph23-proxraw-strength
warning: no schema found in file: ./Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml
Error: Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.example.dts:31.33-34 syntax error
FATAL ERROR: Unable to parse input tree
make[1]: *** [scripts/Makefile.lib:373: Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.example.dt.yaml] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:1413: dt_binding_check] Error 2
doc reference errors (make refcheckdocs):
Documentation/Makefile:39: The 'sphinx-build' command was not found. Make sure you have Sphinx installed and in PATH, or set the SPHINXBUILD make variable to point to the full path of the 'sphinx-build' executable.
Detected OS: DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=20.04
DISTRIB_CODENAME=focal
DISTRIB_DESCRIPTION="Ubuntu 20.04.3 LTS".
Warning: better to also install "convert".
Warning: better to also install "dot".
Warning: better to also install "dvipng".
ERROR: please install "ensurepip", otherwise, build won't work.
Warning: better to also install "fonts-dejavu".
Warning: better to also install "fonts-noto-cjk".
Warning: better to also install "latexmk".
Warning: better to also install "rsvg-convert".
Warning: better to also install "xelatex".
You should run:
sudo apt-get install imagemagick graphviz dvipng python3-venv fonts-dejavu fonts-noto-cjk latexmk librsvg2-bin texlive-xetex
note: If you want pdf, you need at least Sphinx 2.4.4.
To upgrade Sphinx, use:
Can't build as 2 mandatory dependencies are missing at ./scripts/sphinx-pre-install line 953.
/usr/bin/python3 -m venv sphinx_2.4.4
. sphinx_2.4.4/bin/activate
pip install -r ./Documentation/sphinx/requirements.txt
If you want to exit the virtualenv, you can use:
deactivate
See https://patchwork.ozlabs.org/patch/1565029
This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.
If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:
pip3 install dtschema --upgrade
Please check and re-submit.
^ permalink raw reply [flat|nested] 15+ messages in thread
* [PATCH v5 5/5] iio: sx9324: Add dt_binding support
2021-12-08 0:43 [PATCH v5 0/5] Expand Semtech SAR Sensors support Gwendal Grignou
` (3 preceding siblings ...)
2021-12-08 0:43 ` [PATCH v5 4/5] dt-bindings: iio: Add sx9324 binding Gwendal Grignou
@ 2021-12-08 0:43 ` Gwendal Grignou
4 siblings, 0 replies; 15+ messages in thread
From: Gwendal Grignou @ 2021-12-08 0:43 UTC (permalink / raw)
To: jic23, lars, swboyd
Cc: andy.shevchenko, linux-iio, devicetree, Gwendal Grignou
Based on bindings/iio/proximity/semtech,sx9324.yaml, implement
retrieving sensor hardware property and alter default values.
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
---
Changes in v5:
- Use prefixed binding names.
- Fix long lines.
Changes in v4:
- Fix spelling in commit title.
Changes in v3:
- Remove duplicate information.
- Use intervals instead of enum.
- Fix filter description.
Changes in v2:
- Fix interrupt documentation wording.
drivers/iio/proximity/sx9324.c | 164 +++++++++++++++++++++++++++++++++
1 file changed, 164 insertions(+)
diff --git a/drivers/iio/proximity/sx9324.c b/drivers/iio/proximity/sx9324.c
index a27aae64e6d4e1..86b7c83ea644e8 100644
--- a/drivers/iio/proximity/sx9324.c
+++ b/drivers/iio/proximity/sx9324.c
@@ -77,6 +77,7 @@
#define SX9324_REG_PROX_CTRL0 0x30
#define SX9324_REG_PROX_CTRL0_GAIN_MASK GENMASK(5, 3)
#define SX9324_REG_PROX_CTRL0_GAIN_1 0x80
+#define SX9324_REG_PROX_CTRL0_RAWFILT_MASK GENMASK(2, 0)
#define SX9324_REG_PROX_CTRL0_RAWFILT_1P50 0x01
#define SX9324_REG_PROX_CTRL1 0x31
#define SX9324_REG_PROX_CTRL2 0x32
@@ -751,6 +752,74 @@ static int sx9324_write_raw(struct iio_dev *indio_dev,
return -EINVAL;
}
+static const struct sx_common_reg_default sx9324_default_regs[] = {
+ { SX9324_REG_IRQ_MSK, 0x00 },
+ { SX9324_REG_IRQ_CFG0, 0x00 },
+ { SX9324_REG_IRQ_CFG1, SX9324_REG_IRQ_CFG1_FAILCOND },
+ { SX9324_REG_IRQ_CFG2, 0x00 },
+ { SX9324_REG_GNRL_CTRL0, SX9324_REG_GNRL_CTRL0_SCANPERIOD_100MS },
+ /*
+ * The lower 4 bits should not be set as it enable sensors measurements.
+ * Turning the detection on before the configuration values are set to
+ * good values can cause the device to return erroneous readings.
+ */
+ { SX9324_REG_GNRL_CTRL1, SX9324_REG_GNRL_CTRL1_PAUSECTRL },
+
+ { SX9324_REG_AFE_CTRL0, 0x00 },
+ { SX9324_REG_AFE_CTRL3, 0x00 },
+ { SX9324_REG_AFE_CTRL4, SX9324_REG_AFE_CTRL4_FREQ_83_33HZ |
+ SX9324_REG_AFE_CTRL4_RES_100 },
+ { SX9324_REG_AFE_CTRL6, 0x00 },
+ { SX9324_REG_AFE_CTRL7, SX9324_REG_AFE_CTRL4_FREQ_83_33HZ |
+ SX9324_REG_AFE_CTRL4_RES_100 },
+
+ /* TODO(gwendal): PHx use chip default or all grounded? */
+ { SX9324_REG_AFE_PH0, 0x29 },
+ { SX9324_REG_AFE_PH1, 0x26 },
+ { SX9324_REG_AFE_PH2, 0x1a },
+ { SX9324_REG_AFE_PH3, 0x16 },
+
+ { SX9324_REG_AFE_CTRL8, SX9324_REG_AFE_CTRL8_RESFILTN_4KOHM },
+ { SX9324_REG_AFE_CTRL9, SX9324_REG_AFE_CTRL9_AGAIN_1 },
+
+ { SX9324_REG_PROX_CTRL0, SX9324_REG_PROX_CTRL0_GAIN_1 |
+ SX9324_REG_PROX_CTRL0_RAWFILT_1P50 },
+ { SX9324_REG_PROX_CTRL1, SX9324_REG_PROX_CTRL0_GAIN_1 |
+ SX9324_REG_PROX_CTRL0_RAWFILT_1P50 },
+ { SX9324_REG_PROX_CTRL2, SX9324_REG_PROX_CTRL2_AVGNEG_THRESH_16K },
+ { SX9324_REG_PROX_CTRL3, SX9324_REG_PROX_CTRL3_AVGDEB_2SAMPLES |
+ SX9324_REG_PROX_CTRL3_AVGPOS_THRESH_16K },
+ { SX9324_REG_PROX_CTRL4, SX9324_REG_PROX_CTRL4_AVGNEG_FILT_2 |
+ SX9324_REG_PROX_CTRL3_AVGPOS_FILT_256 },
+ { SX9324_REG_PROX_CTRL5, 0x00 },
+ { SX9324_REG_PROX_CTRL6, SX9324_REG_PROX_CTRL6_PROXTHRESH_32 },
+ { SX9324_REG_PROX_CTRL7, SX9324_REG_PROX_CTRL6_PROXTHRESH_32 },
+ { SX9324_REG_ADV_CTRL0, 0x00 },
+ { SX9324_REG_ADV_CTRL1, 0x00 },
+ { SX9324_REG_ADV_CTRL2, 0x00 },
+ { SX9324_REG_ADV_CTRL3, 0x00 },
+ { SX9324_REG_ADV_CTRL4, 0x00 },
+ { SX9324_REG_ADV_CTRL5, SX9324_REG_ADV_CTRL5_STARTUP_SENSOR_1 |
+ SX9324_REG_ADV_CTRL5_STARTUP_METHOD_1 },
+ { SX9324_REG_ADV_CTRL6, 0x00 },
+ { SX9324_REG_ADV_CTRL7, 0x00 },
+ { SX9324_REG_ADV_CTRL8, 0x00 },
+ { SX9324_REG_ADV_CTRL9, 0x00 },
+ /* Body/Table threshold */
+ { SX9324_REG_ADV_CTRL10, 0x00 },
+ { SX9324_REG_ADV_CTRL11, 0x00 },
+ { SX9324_REG_ADV_CTRL12, 0x00 },
+ /* TODO(gwendal): SAR currenly disabled */
+ { SX9324_REG_ADV_CTRL13, 0x00 },
+ { SX9324_REG_ADV_CTRL14, 0x00 },
+ { SX9324_REG_ADV_CTRL15, 0x00 },
+ { SX9324_REG_ADV_CTRL16, 0x00 },
+ { SX9324_REG_ADV_CTRL17, 0x00 },
+ { SX9324_REG_ADV_CTRL18, 0x00 },
+ { SX9324_REG_ADV_CTRL19, SX9324_REG_ADV_CTRL19_HIGHT_FAILURE_THRESH_SATURATION },
+ { SX9324_REG_ADV_CTRL20, SX9324_REG_ADV_CTRL19_HIGHT_FAILURE_THRESH_SATURATION },
+};
+
/* Activate all channels and perform an initial compensation. */
static int sx9324_init_compensation(struct iio_dev *indio_dev)
{
@@ -775,6 +844,99 @@ static int sx9324_init_compensation(struct iio_dev *indio_dev)
return ret;
}
+static const struct sx_common_reg_default *
+sx9324_get_default_reg(struct device *dev, int idx,
+ struct sx_common_reg_default *reg_def)
+{
+#define SX9324_PIN_DEF "semtech,ph0-pin"
+#define SX9324_RESOLUTION_DEF "semtech,ph01-resolution"
+#define SX9324_PROXRAW_DEF "semtech,ph01-proxraw-strength"
+ unsigned int pin_defs[SX9324_NUM_PINS];
+ char prop[] = SX9324_PROXRAW_DEF;
+ u32 start = 0, raw = 0, pos = 0;
+ int ret, count, ph, pin;
+
+ memcpy(reg_def, &sx9324_default_regs[idx], sizeof(*reg_def));
+ switch (reg_def->reg) {
+ case SX9324_REG_AFE_PH0:
+ case SX9324_REG_AFE_PH1:
+ case SX9324_REG_AFE_PH2:
+ case SX9324_REG_AFE_PH3:
+ ph = reg_def->reg - SX9324_REG_AFE_PH0;
+ scnprintf(prop, ARRAY_SIZE(prop), "semtech,ph%d-pin", ph);
+
+ count = device_property_count_u32(dev, prop);
+ if (count != ARRAY_SIZE(pin_defs))
+ break;
+ ret = device_property_read_u32_array(dev, prop, pin_defs,
+ ARRAY_SIZE(pin_defs));
+ for (pin = 0; pin < SX9324_NUM_PINS; pin++)
+ raw |= (pin_defs[pin] << (2 * pin)) &
+ SX9324_REG_AFE_PH0_PIN_MASK(pin);
+ reg_def->def = raw;
+ break;
+ case SX9324_REG_AFE_CTRL4:
+ case SX9324_REG_AFE_CTRL7:
+ if (reg_def->reg == SX9324_REG_AFE_CTRL4)
+ strncpy(prop, "semtech,ph01-resolution",
+ ARRAY_SIZE(prop));
+ else
+ strncpy(prop, "semtech,ph23-resolution",
+ ARRAY_SIZE(prop));
+
+ ret = device_property_read_u32(dev, prop, &raw);
+ if (ret)
+ break;
+
+ raw = ilog2(raw) - 3;
+
+ reg_def->def &= ~SX9324_REG_AFE_CTRL4_RESOLUTION_MASK;
+ reg_def->def |= FIELD_PREP(SX9324_REG_AFE_CTRL4_RESOLUTION_MASK,
+ raw);
+ break;
+ case SX9324_REG_ADV_CTRL5:
+ ret = device_property_read_u32(dev, "semtech,startup-sensor",
+ &start);
+ if (ret)
+ break;
+
+ reg_def->def &= ~SX9324_REG_ADV_CTRL5_STARTUPSENS_MASK;
+ reg_def->def |= FIELD_PREP(SX9324_REG_ADV_CTRL5_STARTUPSENS_MASK,
+ start);
+ break;
+ case SX9324_REG_PROX_CTRL4:
+ ret = device_property_read_u32(dev, "semtech,avg-pos-strength",
+ &pos);
+ if (ret)
+ break;
+
+ /* Powers of 2, except for a gap between 16 and 64 */
+ raw = clamp(ilog2(pos), 3, 11) - (pos >= 32 ? 4 : 3);
+
+ reg_def->def &= ~SX9324_REG_PROX_CTRL4_AVGPOSFILT_MASK;
+ reg_def->def |= FIELD_PREP(SX9324_REG_PROX_CTRL4_AVGPOSFILT_MASK,
+ raw);
+ break;
+ case SX9324_REG_PROX_CTRL0:
+ case SX9324_REG_PROX_CTRL1:
+ if (reg_def->reg == SX9324_REG_PROX_CTRL0)
+ strncpy(prop, "semtech,ph01-proxraw-strength",
+ ARRAY_SIZE(prop));
+ else
+ strncpy(prop, "semtech,ph23-proxraw-strength",
+ ARRAY_SIZE(prop));
+ ret = device_property_read_u32(dev, prop, &raw);
+ if (ret)
+ break;
+
+ reg_def->def &= ~SX9324_REG_PROX_CTRL0_RAWFILT_MASK;
+ reg_def->def |= FIELD_PREP(SX9324_REG_PROX_CTRL0_RAWFILT_MASK,
+ raw);
+ break;
+ }
+ return reg_def;
+}
+
static int sx9324_check_whoami(struct device *dev,
struct iio_dev *indio_dev)
{
@@ -795,12 +957,14 @@ static const struct sx_common_chip_info sx9324_chip_info = {
.mask_enable_chan = SX9324_REG_GNRL_CTRL1_PHEN_MASK,
.irq_msk_offset = 3,
.num_channels = SX9324_NUM_CHANNELS,
+ .num_default_regs = ARRAY_SIZE(sx9324_default_regs),
.ops = {
.read_prox_data = sx9324_read_prox_data,
.check_whoami = sx9324_check_whoami,
.init_compensation = sx9324_init_compensation,
.wait_for_sample = sx9324_wait_for_sample,
+ .get_default_reg = sx9324_get_default_reg,
},
.iio_channels = sx9324_channels,
--
2.34.1.400.ga245620fadb-goog
^ permalink raw reply related [flat|nested] 15+ messages in thread