[PATCH 1/6] soundwire: qcom: add support to missing transport params

[Srinivas Kandagatla]

Some of the transport parameters derived from device tree
are not fully parsed by the driver.

This patch adds support to parse those missing parameters.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
---
 drivers/soundwire/qcom.c | 107 +++++++++++++++++++++++++++++++++++++--
 1 file changed, 103 insertions(+), 4 deletions(-)

diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index 6d22df01f354..36e273795cbe 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -54,7 +54,13 @@
 #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_PORT_CTRL_2_BANK(n, m)	(0x1128 + 0x100 * (n - 1) + 0x40 * m)
+#define SWRM_DP_BLOCK_CTRL_1(n)		(0x112C + 0x100 * (n - 1))
+#define SWRM_DP_BLOCK_CTRL2_BANK(n, m)	(0x1130 + 0x100 * (n - 1) + 0x40 * m)
+#define SWRM_DP_PORT_HCTRL_BANK(n, m)	(0x1134 + 0x100 * (n - 1) + 0x40 * m)
 #define SWRM_DP_BLOCK_CTRL3_BANK(n, m)	(0x1138 + 0x100 * (n - 1) + 0x40 * m)
+#define SWRM_DIN_DPn_PCM_PORT_CTRL(n)	(0x1054 + 0x100 * (n - 1))
+
 #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
@@ -73,12 +79,20 @@
 #define QCOM_SDW_MAX_PORTS	14
 #define DEFAULT_CLK_FREQ	9600000
 #define SWRM_MAX_DAIS		0xF
+#define SWR_INVALID_PARAM 0xFF
+#define SWR_HSTOP_MAX_VAL 0xF
+#define SWR_HSTART_MIN_VAL 0x0
 
 struct qcom_swrm_port_config {
 	u8 si;
 	u8 off1;
 	u8 off2;
 	u8 bp_mode;
+	u8 hstart;
+	u8 hstop;
+	u8 word_length;
+	u8 bgp_count;
+	u8 lane_control;
 };
 
 struct qcom_swrm_ctrl {
@@ -396,7 +410,13 @@ static int qcom_swrm_port_params(struct sdw_bus *bus,
 				 struct sdw_port_params *p_params,
 				 unsigned int bank)
 {
-	/* TBD */
+	struct qcom_swrm_ctrl *ctrl = to_qcom_sdw(bus);
+
+	if (p_params->bps != SWR_INVALID_PARAM)
+		return ctrl->reg_write(ctrl,
+				       SWRM_DP_BLOCK_CTRL_1(p_params->num),
+				       p_params->bps - 1);
+
 	return 0;
 }
 
@@ -415,10 +435,32 @@ static int qcom_swrm_transport_params(struct sdw_bus *bus,
 
 	ret = ctrl->reg_write(ctrl, reg, value);
 
-	if (!ret && params->blk_pkg_mode) {
-		reg = SWRM_DP_BLOCK_CTRL3_BANK(params->port_num, bank);
+	if (params->lane_ctrl != SWR_INVALID_PARAM) {
+		reg = SWRM_DP_PORT_CTRL_2_BANK(params->port_num, bank);
+		value = params->lane_ctrl;
+		ret = ctrl->reg_write(ctrl, reg, value);
+	}
 
-		ret = ctrl->reg_write(ctrl, reg, 1);
+	if (params->blk_grp_ctrl != SWR_INVALID_PARAM) {
+		reg = SWRM_DP_BLOCK_CTRL2_BANK(params->port_num, bank);
+		value = params->blk_grp_ctrl;
+		ret = ctrl->reg_write(ctrl, reg, value);
+	}
+
+	if (params->hstart != SWR_INVALID_PARAM
+			&& params->hstop != SWR_INVALID_PARAM) {
+		reg = SWRM_DP_PORT_HCTRL_BANK(params->port_num, bank);
+		value = (params->hstop << 4) | params->hstart;
+		ret = ctrl->reg_write(ctrl, reg, value);
+	} else {
+		reg = SWRM_DP_PORT_HCTRL_BANK(params->port_num, bank);
+		value = (SWR_HSTOP_MAX_VAL << 4) | SWR_HSTART_MIN_VAL;
+		ret = ctrl->reg_write(ctrl, reg, value);
+	}
+
+	if (params->blk_pkg_mode != SWR_INVALID_PARAM) {
+		reg = SWRM_DP_BLOCK_CTRL3_BANK(params->port_num, bank);
+		ret = ctrl->reg_write(ctrl, reg, params->blk_pkg_mode);
 	}
 
 	return ret;
@@ -470,6 +512,17 @@ static int qcom_swrm_compute_params(struct sdw_bus *bus)
 			p_rt->transport_params.offset1 = pcfg->off1;
 			p_rt->transport_params.offset2 = pcfg->off2;
 			p_rt->transport_params.blk_pkg_mode = pcfg->bp_mode;
+			p_rt->transport_params.blk_grp_ctrl = pcfg->bgp_count;
+			p_rt->transport_params.hstart = pcfg->hstart;
+			p_rt->transport_params.hstop = pcfg->hstop;
+			p_rt->transport_params.lane_ctrl = pcfg->lane_control;
+			if (pcfg->word_length != SWR_INVALID_PARAM) {
+				sdw_fill_port_params(&p_rt->port_params,
+					     p_rt->num,  pcfg->word_length + 1,
+					     SDW_PORT_FLOW_MODE_ISOCH,
+					     SDW_PORT_DATA_MODE_NORMAL);
+			}
+
 		}
 
 		list_for_each_entry(s_rt, &m_rt->slave_rt_list, m_rt_node) {
@@ -481,6 +534,18 @@ static int qcom_swrm_compute_params(struct sdw_bus *bus)
 				p_rt->transport_params.offset1 = pcfg->off1;
 				p_rt->transport_params.offset2 = pcfg->off2;
 				p_rt->transport_params.blk_pkg_mode = pcfg->bp_mode;
+				p_rt->transport_params.blk_grp_ctrl = pcfg->bgp_count;
+
+				p_rt->transport_params.hstart = pcfg->hstart;
+				p_rt->transport_params.hstop = pcfg->hstop;
+				p_rt->transport_params.lane_ctrl = pcfg->lane_control;
+				if (pcfg->word_length != SWR_INVALID_PARAM) {
+					sdw_fill_port_params(&p_rt->port_params,
+						     p_rt->num,
+						     pcfg->word_length + 1,
+						     SDW_PORT_FLOW_MODE_ISOCH,
+						     SDW_PORT_DATA_MODE_NORMAL);
+				}
 				i++;
 			}
 		}
@@ -728,6 +793,11 @@ static int qcom_swrm_get_port_config(struct qcom_swrm_ctrl *ctrl)
 	u8 off2[QCOM_SDW_MAX_PORTS];
 	u8 si[QCOM_SDW_MAX_PORTS];
 	u8 bp_mode[QCOM_SDW_MAX_PORTS] = { 0, };
+	u8 hstart[QCOM_SDW_MAX_PORTS];
+	u8 hstop[QCOM_SDW_MAX_PORTS];
+	u8 word_length[QCOM_SDW_MAX_PORTS];
+	u8 bgp_count[QCOM_SDW_MAX_PORTS];
+	u8 lane_control[QCOM_SDW_MAX_PORTS];
 	int i, ret, nports, val;
 
 	ctrl->reg_read(ctrl, SWRM_COMP_PARAMS, &val);
@@ -772,11 +842,40 @@ static int qcom_swrm_get_port_config(struct qcom_swrm_ctrl *ctrl)
 
 	ret = of_property_read_u8_array(np, "qcom,ports-block-pack-mode",
 					bp_mode, nports);
+
+	ret = of_property_read_u8_array(np, "qcom,ports-hstart", hstart, nports);
+	if (ret)
+		memset(hstart, SWR_INVALID_PARAM, QCOM_SDW_MAX_PORTS);
+
+	ret = of_property_read_u8_array(np, "qcom,ports-hstop", hstop, nports);
+	if (ret)
+		memset(hstop, SWR_INVALID_PARAM, QCOM_SDW_MAX_PORTS);
+
+	ret = of_property_read_u8_array(np, "qcom,ports-word-length",
+					word_length, nports);
+	if (ret)
+		memset(word_length, SWR_INVALID_PARAM, QCOM_SDW_MAX_PORTS);
+
+	ret = of_property_read_u8_array(np, "qcom,ports-block-group-count",
+					bgp_count, nports);
+	if (ret)
+		memset(bgp_count, SWR_INVALID_PARAM, QCOM_SDW_MAX_PORTS);
+
+	ret = of_property_read_u8_array(np, "qcom,ports-lane-control",
+					lane_control, nports);
+	if (ret)
+		memset(lane_control, SWR_INVALID_PARAM, QCOM_SDW_MAX_PORTS);
+
 	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];
+		ctrl->pconfig[i].hstart = hstart[i];
+		ctrl->pconfig[i].hstop = hstop[i];
+		ctrl->pconfig[i].word_length = word_length[i];
+		ctrl->pconfig[i].bgp_count = bgp_count[i];
+		ctrl->pconfig[i].lane_control = lane_control[i];
 	}
 
 	return 0;
-- 
2.21.0