[PATCH v3 0/3] soundwire: qcom: fix IP version v1.5.1 support

[PATCH v3 0/3] soundwire: qcom: fix IP version v1.5.1 support

[Srinivas Kandagatla]

While testing Qualcomm soundwire controller version 1.5.1, found two issue,
Firstly the frame shape information configured vs the bus parameters
are out of sync. secondly some ports on this ip version require
block packing mode support.

With this patchset I was able to test 2 WSA speakers!

Also I found a regression due to move to REG_FIELD, which patch 1 fixes it!

thanks,
srini

Changes since v2:
- updated to use u32_replace_bits().
- wrapped up in single lines as suggested by vkoul.

Srinivas Kandagatla (3):
  soundwire: qcom: clear BIT FIELDs before value set.
  soundwire: qcom: add support to block packing mode
  soundwire: qcom: get max rows and cols info from compatible

 drivers/soundwire/qcom.c | 70 +++++++++++++++++++++++++++++-----------
 1 file changed, 51 insertions(+), 19 deletions(-)

-- 
2.21.0

[PATCH v3 1/3] soundwire: qcom: clear BIT FIELDs before value set.

[Srinivas Kandagatla]

According to usage (bitfields.h) of REG_FIELDS,
Modify is:
  reg &= ~REG_FIELD_C;
  reg |= FIELD_PREP(REG_FIELD_C, c);

Patch ("soundwire: qcom : use FIELD_{GET|PREP}") seems to have
accidentally removed clearing bit field while modifying the register.

Fix this by using u32_replace_bits() to clear and set the values.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/soundwire/qcom.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index d7aabdaffee3..0036d3248fb4 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -311,7 +311,7 @@ static int qcom_swrm_init(struct qcom_swrm_ctrl *ctrl)
 
 	/* Configure No pings */
 	ctrl->reg_read(ctrl, SWRM_MCP_CFG_ADDR, &val);
-	val |= FIELD_PREP(SWRM_MCP_CFG_MAX_NUM_OF_CMD_NO_PINGS_BMSK, SWRM_DEF_CMD_NO_PINGS);
+	val = u32_replace_bits(val, SWRM_DEF_CMD_NO_PINGS, SWRM_MCP_CFG_MAX_NUM_OF_CMD_NO_PINGS_BMSK);
 	ctrl->reg_write(ctrl, SWRM_MCP_CFG_ADDR, val);
 
 	/* Configure number of retries of a read/write cmd */
@@ -372,8 +372,8 @@ static int qcom_swrm_pre_bank_switch(struct sdw_bus *bus)
 
 	ctrl->reg_read(ctrl, reg, &val);
 
-	val |= FIELD_PREP(SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_BMSK, SWRM_MAX_COL_VAL);
-	val |= FIELD_PREP(SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_BMSK, SWRM_MAX_ROW_VAL);
+	val = u32_replace_bits(val, SWRM_MAX_COL_VAL, SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_BMSK);
+	val = u32_replace_bits(val, SWRM_MAX_ROW_VAL, SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_BMSK);
 
 	return ctrl->reg_write(ctrl, reg, val);
 }
-- 
2.21.0

[PATCH v3 2/3] soundwire: qcom: add support to block packing mode

[Srinivas Kandagatla]

This patch adds support to block pack mode, which is required
on Qcom soundwire controllers v1.5.x on few ports!

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/soundwire/qcom.c | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index 0036d3248fb4..5a61d82310fd 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -54,6 +54,7 @@
 #define SWRM_MCP_SLV_STATUS					0x1090
 #define SWRM_MCP_SLV_STATUS_MASK				GENMASK(1, 0)
 #define SWRM_DP_PORT_CTRL_BANK(n, m)	(0x1124 + 0x100 * (n - 1) + 0x40 * m)
+#define SWRM_DP_BLOCK_CTRL3_BANK(n, m)	(0x1138 + 0x100 * (n - 1) + 0x40 * m)
 #define SWRM_DP_PORT_CTRL_EN_CHAN_SHFT				0x18
 #define SWRM_DP_PORT_CTRL_OFFSET2_SHFT				0x10
 #define SWRM_DP_PORT_CTRL_OFFSET1_SHFT				0x08
@@ -82,6 +83,7 @@ struct qcom_swrm_port_config {
 	u8 si;
 	u8 off1;
 	u8 off2;
+	u8 bp_mode;
 };
 
 struct qcom_swrm_ctrl {
@@ -392,14 +394,22 @@ static int qcom_swrm_transport_params(struct sdw_bus *bus,
 {
 	struct qcom_swrm_ctrl *ctrl = to_qcom_sdw(bus);
 	u32 value;
+	int reg = SWRM_DP_PORT_CTRL_BANK((params->port_num), bank);
+	int ret;
 
 	value = params->offset1 << SWRM_DP_PORT_CTRL_OFFSET1_SHFT;
 	value |= params->offset2 << SWRM_DP_PORT_CTRL_OFFSET2_SHFT;
 	value |= params->sample_interval - 1;
 
-	return ctrl->reg_write(ctrl,
-			       SWRM_DP_PORT_CTRL_BANK((params->port_num), bank),
-			       value);
+	ret = ctrl->reg_write(ctrl, reg, value);
+
+	if (!ret && params->blk_pkg_mode) {
+		reg = SWRM_DP_BLOCK_CTRL3_BANK(params->port_num, bank);
+
+		ret = ctrl->reg_write(ctrl, reg, 1);
+	}
+
+	return ret;
 }
 
 static int qcom_swrm_port_enable(struct sdw_bus *bus,
@@ -447,6 +457,7 @@ static int qcom_swrm_compute_params(struct sdw_bus *bus)
 			p_rt->transport_params.sample_interval = pcfg->si + 1;
 			p_rt->transport_params.offset1 = pcfg->off1;
 			p_rt->transport_params.offset2 = pcfg->off2;
+			p_rt->transport_params.blk_pkg_mode = pcfg->bp_mode;
 		}
 
 		list_for_each_entry(s_rt, &m_rt->slave_rt_list, m_rt_node) {
@@ -457,6 +468,7 @@ static int qcom_swrm_compute_params(struct sdw_bus *bus)
 					pcfg->si + 1;
 				p_rt->transport_params.offset1 = pcfg->off1;
 				p_rt->transport_params.offset2 = pcfg->off2;
+				p_rt->transport_params.blk_pkg_mode = pcfg->bp_mode;
 				i++;
 			}
 		}
@@ -703,6 +715,7 @@ static int qcom_swrm_get_port_config(struct qcom_swrm_ctrl *ctrl)
 	u8 off1[QCOM_SDW_MAX_PORTS];
 	u8 off2[QCOM_SDW_MAX_PORTS];
 	u8 si[QCOM_SDW_MAX_PORTS];
+	u8 bp_mode[QCOM_SDW_MAX_PORTS] = { 0, };
 	int i, ret, nports, val;
 
 	ctrl->reg_read(ctrl, SWRM_COMP_PARAMS, &val);
@@ -745,10 +758,13 @@ static int qcom_swrm_get_port_config(struct qcom_swrm_ctrl *ctrl)
 	if (ret)
 		return ret;
 
+	ret = of_property_read_u8_array(np, "qcom,ports-block-pack-mode",
+					bp_mode, nports);
 	for (i = 0; i < nports; i++) {
 		ctrl->pconfig[i].si = si[i];
 		ctrl->pconfig[i].off1 = off1[i];
 		ctrl->pconfig[i].off2 = off2[i];
+		ctrl->pconfig[i].bp_mode = bp_mode[i];
 	}
 
 	return 0;
-- 
2.21.0

[PATCH v3 3/3] soundwire: qcom: get max rows and cols info from compatible

[Srinivas Kandagatla]

currently the max rows and cols values are hardcoded. In reality
these values depend on the IP version. So get these based on
device tree compatible strings.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/soundwire/qcom.c | 46 +++++++++++++++++++++++++++-------------
 1 file changed, 31 insertions(+), 15 deletions(-)

diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index 5a61d82310fd..88ea31265941 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -66,11 +66,6 @@
 #define SWRM_REG_VAL_PACK(data, dev, id, reg)	\
 			((reg) | ((id) << 16) | ((dev) << 20) | ((data) << 24))
 
-#define SWRM_MAX_ROW_VAL	0 /* Rows = 48 */
-#define SWRM_DEFAULT_ROWS	48
-#define SWRM_MIN_COL_VAL	0 /* Cols = 2 */
-#define SWRM_DEFAULT_COL	16
-#define SWRM_MAX_COL_VAL	7
 #define SWRM_SPECIAL_CMD_ID	0xF
 #define MAX_FREQ_NUM		1
 #define TIMEOUT_MS		(2 * HZ)
@@ -104,6 +99,8 @@ struct qcom_swrm_ctrl {
 	unsigned int version;
 	int num_din_ports;
 	int num_dout_ports;
+	int cols_index;
+	int rows_index;
 	unsigned long dout_port_mask;
 	unsigned long din_port_mask;
 	struct qcom_swrm_port_config pconfig[QCOM_SDW_MAX_PORTS];
@@ -113,6 +110,21 @@ struct qcom_swrm_ctrl {
 	int (*reg_write)(struct qcom_swrm_ctrl *ctrl, int reg, int val);
 };
 
+struct qcom_swrm_data {
+	u32 default_cols;
+	u32 default_rows;
+};
+
+static struct qcom_swrm_data swrm_v1_3_data = {
+	.default_rows = 48,
+	.default_cols = 16,
+};
+
+static struct qcom_swrm_data swrm_v1_5_data = {
+	.default_rows = 50,
+	.default_cols = 16,
+};
+
 #define to_qcom_sdw(b)	container_of(b, struct qcom_swrm_ctrl, bus)
 
 static int qcom_swrm_ahb_reg_read(struct qcom_swrm_ctrl *ctrl, int reg,
@@ -299,8 +311,8 @@ static int qcom_swrm_init(struct qcom_swrm_ctrl *ctrl)
 	u32 val;
 
 	/* Clear Rows and Cols */
-	val = FIELD_PREP(SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_BMSK, SWRM_MAX_ROW_VAL);
-	val |= FIELD_PREP(SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_BMSK, SWRM_MIN_COL_VAL);
+	val = FIELD_PREP(SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_BMSK, ctrl->rows_index);
+	val |= FIELD_PREP(SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_BMSK, ctrl->cols_index);
 
 	ctrl->reg_write(ctrl, SWRM_MCP_FRAME_CTRL_BANK_ADDR(0), val);
 
@@ -374,8 +386,8 @@ static int qcom_swrm_pre_bank_switch(struct sdw_bus *bus)
 
 	ctrl->reg_read(ctrl, reg, &val);
 
-	val = u32_replace_bits(val, SWRM_MAX_COL_VAL, SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_BMSK);
-	val = u32_replace_bits(val, SWRM_MAX_ROW_VAL, SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_BMSK);
+	val = u32_replace_bits(val, ctrl->cols_index, SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_BMSK);
+	val = u32_replace_bits(val, ctrl->rows_index, SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_BMSK);
 
 	return ctrl->reg_write(ctrl, reg, val);
 }
@@ -776,6 +788,7 @@ static int qcom_swrm_probe(struct platform_device *pdev)
 	struct sdw_master_prop *prop;
 	struct sdw_bus_params *params;
 	struct qcom_swrm_ctrl *ctrl;
+	const struct qcom_swrm_data *data;
 	int ret;
 	u32 val;
 
@@ -783,6 +796,9 @@ static int qcom_swrm_probe(struct platform_device *pdev)
 	if (!ctrl)
 		return -ENOMEM;
 
+	data = of_device_get_match_data(dev);
+	ctrl->rows_index = sdw_find_row_index(data->default_rows);
+	ctrl->cols_index = sdw_find_col_index(data->default_cols);
 #if IS_ENABLED(CONFIG_SLIMBUS)
 	if (dev->parent->bus == &slimbus_bus) {
 #else
@@ -832,8 +848,8 @@ static int qcom_swrm_probe(struct platform_device *pdev)
 	params = &ctrl->bus.params;
 	params->max_dr_freq = DEFAULT_CLK_FREQ;
 	params->curr_dr_freq = DEFAULT_CLK_FREQ;
-	params->col = SWRM_DEFAULT_COL;
-	params->row = SWRM_DEFAULT_ROWS;
+	params->col = data->default_cols;
+	params->row = data->default_rows;
 	ctrl->reg_read(ctrl, SWRM_MCP_STATUS, &val);
 	params->curr_bank = val & SWRM_MCP_STATUS_BANK_NUM_MASK;
 	params->next_bank = !params->curr_bank;
@@ -843,8 +859,8 @@ static int qcom_swrm_probe(struct platform_device *pdev)
 	prop->num_clk_gears = 0;
 	prop->num_clk_freq = MAX_FREQ_NUM;
 	prop->clk_freq = &qcom_swrm_freq_tbl[0];
-	prop->default_col = SWRM_DEFAULT_COL;
-	prop->default_row = SWRM_DEFAULT_ROWS;
+	prop->default_col = data->default_cols;
+	prop->default_row = data->default_rows;
 
 	ctrl->reg_read(ctrl, SWRM_COMP_HW_VERSION, &ctrl->version);
 
@@ -895,8 +911,8 @@ static int qcom_swrm_remove(struct platform_device *pdev)
 }
 
 static const struct of_device_id qcom_swrm_of_match[] = {
-	{ .compatible = "qcom,soundwire-v1.3.0", },
-	{ .compatible = "qcom,soundwire-v1.5.1", },
+	{ .compatible = "qcom,soundwire-v1.3.0", .data = &swrm_v1_3_data },
+	{ .compatible = "qcom,soundwire-v1.5.1", .data = &swrm_v1_5_data },
 	{/* sentinel */},
 };
 
-- 
2.21.0