[PATCH v1 4/4] ASoC: codecs: wcd937x: Add static channel mapping support in wcd937x-sdw

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Add static channel mapping between master and slave ports in
wcd937x-sdw. This patch will resolve the channel mask mismatch
between master and slave.

Signed-off-by: Mohammad Rafi Shaik <quic_mohs@xxxxxxxxxxx>
---
 sound/soc/codecs/wcd937x-sdw.c | 52 ++++++++++++++++++++++++++++------
 sound/soc/codecs/wcd937x.c     | 12 ++++++--
 sound/soc/codecs/wcd937x.h     |  6 +++-
 3 files changed, 59 insertions(+), 11 deletions(-)

diff --git a/sound/soc/codecs/wcd937x-sdw.c b/sound/soc/codecs/wcd937x-sdw.c
index 0c33f7f3dc25..f59068ddc26f 100644
--- a/sound/soc/codecs/wcd937x-sdw.c
+++ b/sound/soc/codecs/wcd937x-sdw.c
@@ -19,7 +19,7 @@
 #include <sound/soc.h>
 #include "wcd937x.h"
 
-static const struct wcd937x_sdw_ch_info wcd937x_sdw_rx_ch_info[] = {
+static struct wcd937x_sdw_ch_info wcd937x_sdw_rx_ch_info[] = {
 	WCD_SDW_CH(WCD937X_HPH_L, WCD937X_HPH_PORT, BIT(0)),
 	WCD_SDW_CH(WCD937X_HPH_R, WCD937X_HPH_PORT, BIT(1)),
 	WCD_SDW_CH(WCD937X_CLSH, WCD937X_CLSH_PORT, BIT(0)),
@@ -30,7 +30,7 @@ static const struct wcd937x_sdw_ch_info wcd937x_sdw_rx_ch_info[] = {
 	WCD_SDW_CH(WCD937X_DSD_R, WCD937X_DSD_PORT, BIT(1)),
 };
 
-static const struct wcd937x_sdw_ch_info wcd937x_sdw_tx_ch_info[] = {
+static struct wcd937x_sdw_ch_info wcd937x_sdw_tx_ch_info[] = {
 	WCD_SDW_CH(WCD937X_ADC1, WCD937X_ADC_1_PORT, BIT(0)),
 	WCD_SDW_CH(WCD937X_ADC2, WCD937X_ADC_2_3_PORT, BIT(0)),
 	WCD_SDW_CH(WCD937X_ADC3, WCD937X_ADC_2_3_PORT, BIT(0)),
@@ -91,7 +91,7 @@ int wcd937x_sdw_hw_params(struct wcd937x_sdw_priv *wcd,
 {
 	struct sdw_port_config port_config[WCD937X_MAX_SWR_PORTS];
 	unsigned long ch_mask;
-	int i, j;
+	int i, j, ret = 0;
 
 	wcd->sconfig.ch_count = 1;
 	wcd->active_ports = 0;
@@ -112,9 +112,15 @@ int wcd937x_sdw_hw_params(struct wcd937x_sdw_priv *wcd,
 	wcd->sconfig.direction = wcd->is_tx ? SDW_DATA_DIR_TX : SDW_DATA_DIR_RX;
 	wcd->sconfig.type = SDW_STREAM_PCM;
 
-	return sdw_stream_add_slave(wcd->sdev, &wcd->sconfig,
-				    &port_config[0], wcd->active_ports,
-				    wcd->sruntime);
+	ret = sdw_stream_add_slave(wcd->sdev, &wcd->sconfig,
+				   &port_config[0], wcd->active_ports,
+				   wcd->sruntime);
+	if (!ret)
+		sdw_set_channel_map_stream(wcd->sruntime,
+					   wcd->master_channel_map,
+					   wcd->active_ports);
+
+	return ret;
 }
 EXPORT_SYMBOL_GPL(wcd937x_sdw_hw_params);
 
@@ -1019,7 +1025,9 @@ static int wcd9370_probe(struct sdw_slave *pdev,
 {
 	struct device *dev = &pdev->dev;
 	struct wcd937x_sdw_priv *wcd;
-	int ret;
+	u8 master_ch_mask[WCD937X_MAX_SWR_CH_IDS];
+	int master_ch_mask_size = 0;
+	int ret, i;
 
 	wcd = devm_kzalloc(dev, sizeof(*wcd), GFP_KERNEL);
 	if (!wcd)
@@ -1048,10 +1056,36 @@ static int wcd9370_probe(struct sdw_slave *pdev,
 				   SDW_SCP_INT1_PARITY;
 	pdev->prop.lane_control_support = true;
 	pdev->prop.simple_clk_stop_capable = true;
+
+	memset(master_ch_mask, 0, WCD937X_MAX_SWR_CH_IDS);
+
 	if (wcd->is_tx) {
-		pdev->prop.source_ports = GENMASK(WCD937X_MAX_TX_SWR_PORTS - 1, 0);
+		master_ch_mask_size = of_property_count_u8_elems(dev->of_node,
+								 "qcom,tx-channel-mapping");
+
+		if (master_ch_mask_size)
+			ret = of_property_read_u8_array(dev->of_node, "qcom,tx-channel-mapping",
+							master_ch_mask, master_ch_mask_size);
+	} else {
+		master_ch_mask_size = of_property_count_u8_elems(dev->of_node,
+								 "qcom,rx-channel-mapping");
+
+		if (master_ch_mask_size)
+			ret = of_property_read_u8_array(dev->of_node, "qcom,rx-channel-mapping",
+							master_ch_mask, master_ch_mask_size);
+	}
+
+	if (ret < 0)
+		dev_info(dev, "Static channel mapping not specified using device channel maps\n");
+
+	if (wcd->is_tx) {
+		pdev->prop.source_ports = GENMASK(WCD937X_MAX_TX_SWR_PORTS, 0);
 		pdev->prop.src_dpn_prop = wcd937x_dpn_prop;
 		wcd->ch_info = &wcd937x_sdw_tx_ch_info[0];
+
+		for (i = 0; i < master_ch_mask_size; i++)
+			wcd->ch_info[i].master_ch_mask = master_ch_mask[i];
+
 		pdev->prop.wake_capable = true;
 
 		wcd->regmap = devm_regmap_init_sdw(pdev, &wcd937x_regmap_config);
@@ -1065,6 +1099,8 @@ static int wcd9370_probe(struct sdw_slave *pdev,
 		pdev->prop.sink_ports = GENMASK(WCD937X_MAX_SWR_PORTS - 1, 0);
 		pdev->prop.sink_dpn_prop = wcd937x_dpn_prop;
 		wcd->ch_info = &wcd937x_sdw_rx_ch_info[0];
+		for (i = 0; i < master_ch_mask_size; i++)
+			wcd->ch_info[i].master_ch_mask = master_ch_mask[i];
 	}
 
 
diff --git a/sound/soc/codecs/wcd937x.c b/sound/soc/codecs/wcd937x.c
index af296b77a723..404effb8c31f 100644
--- a/sound/soc/codecs/wcd937x.c
+++ b/sound/soc/codecs/wcd937x.c
@@ -1192,13 +1192,21 @@ static int wcd937x_connect_port(struct wcd937x_sdw_priv *wcd, u8 port_idx, u8 ch
 	const struct wcd937x_sdw_ch_info *ch_info = &wcd->ch_info[ch_id];
 	u8 port_num = ch_info->port_num;
 	u8 ch_mask = ch_info->ch_mask;
+	u8 mstr_port_num, mstr_ch_mask;
+	struct sdw_slave *sdev = wcd->sdev;
 
 	port_config->num = port_num;
 
-	if (enable)
+	mstr_port_num = sdev->m_port_map[port_num];
+	mstr_ch_mask = ch_info->master_ch_mask;
+
+	if (enable) {
 		port_config->ch_mask |= ch_mask;
-	else
+		wcd->master_channel_map[mstr_port_num] |= mstr_ch_mask;
+	} else {
 		port_config->ch_mask &= ~ch_mask;
+		wcd->master_channel_map[mstr_port_num] &= ~mstr_ch_mask;
+	}
 
 	return 0;
 }
diff --git a/sound/soc/codecs/wcd937x.h b/sound/soc/codecs/wcd937x.h
index 35f3d48bd7dd..850aa943b7ab 100644
--- a/sound/soc/codecs/wcd937x.h
+++ b/sound/soc/codecs/wcd937x.h
@@ -506,12 +506,14 @@ enum wcd937x_rx_sdw_ports {
 struct wcd937x_sdw_ch_info {
 	int port_num;
 	unsigned int ch_mask;
+	unsigned int master_ch_mask;
 };
 
 #define WCD_SDW_CH(id, pn, cmask)	\
 	[id] = {			\
 		.port_num = pn,		\
 		.ch_mask = cmask,	\
+		.master_ch_mask = cmask,	\
 	}
 
 struct wcd937x_priv;
@@ -520,9 +522,11 @@ struct wcd937x_sdw_priv {
 	struct sdw_stream_config sconfig;
 	struct sdw_stream_runtime *sruntime;
 	struct sdw_port_config port_config[WCD937X_MAX_SWR_PORTS];
-	const struct wcd937x_sdw_ch_info *ch_info;
+	struct wcd937x_sdw_ch_info *ch_info;
 	bool port_enable[WCD937X_MAX_SWR_CH_IDS];
+	unsigned int master_channel_map[SDW_MAX_PORTS];
 	int active_ports;
+	int num_ports;
 	bool is_tx;
 	struct wcd937x_priv *wcd937x;
 	struct irq_domain *slave_irq;
-- 
2.25.1





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