disp: msm: dp: update swing and pre-emp with new hardware settings

Update the DP controller and PHY programming according to
the new hardware recommendations.

CRs-Fixed: 2458753
Change-Id: I1bce5915ba6ebbb250cc5c4aac907b0b287eece7
Signed-off-by: Ajay Singh Parmar <[email protected]>

msm/dp/dp_catalog.c

@@ -1530,7 +1530,7 @@ static void dp_catalog_ctrl_phy_lane_cfg(struct dp_catalog_ctrl *ctrl,
 }
 
 static void dp_catalog_ctrl_update_vx_px(struct dp_catalog_ctrl *ctrl,
-		u8 v_level, u8 p_level)
+		u8 v_level, u8 p_level, bool high)
 {
 	struct dp_catalog_private *catalog;
 	struct dp_io_data *io_data;

msm/dp/dp_catalog.h

@@ -104,7 +104,7 @@ struct dp_catalog_ctrl {
 	void (*phy_lane_cfg)(struct dp_catalog_ctrl *ctrl, bool flipped,
 				u8 lane_cnt);
 	void (*update_vx_px)(struct dp_catalog_ctrl *ctrl, u8 v_level,
-				u8 p_level);
+				u8 p_level, bool high);
 	void (*get_interrupt)(struct dp_catalog_ctrl *ctrl);
 	u32 (*read_hdcp_status)(struct dp_catalog_ctrl *ctrl);
 	void (*send_phy_pattern)(struct dp_catalog_ctrl *ctrl,

msm/dp/dp_catalog_v420.c

@@ -32,6 +32,34 @@ static u8 const vm_voltage_swing[MAX_VOLTAGE_LEVELS][MAX_PRE_EMP_LEVELS] = {
 	{0xFF, 0xFF, 0xFF, 0xFF}  /* sw1, 1.2 v, optional */
 };
 
+static u8 const dp_pre_emp_hbr2_hbr3[MAX_VOLTAGE_LEVELS][MAX_PRE_EMP_LEVELS] = {
+	{0x00, 0x0C, 0x15, 0x1A}, /* pe0, 0 db */
+	{0x02, 0x0E, 0x16, 0xFF}, /* pe1, 3.5 db */
+	{0x02, 0x11, 0xFF, 0xFF}, /* pe2, 6.0 db */
+	{0x04, 0xFF, 0xFF, 0xFF}  /* pe3, 9.5 db */
+};
+
+static u8 const dp_swing_hbr2_hbr3[MAX_VOLTAGE_LEVELS][MAX_PRE_EMP_LEVELS] = {
+	{0x02, 0x12, 0x16, 0x1A}, /* sw0, 0.4v  */
+	{0x09, 0x19, 0x1F, 0xFF}, /* sw1, 0.6v */
+	{0x10, 0x1F, 0xFF, 0xFF}, /* sw1, 0.8v */
+	{0x1F, 0xFF, 0xFF, 0xFF}  /* sw1, 1.2v */
+};
+
+static u8 const dp_pre_emp_hbr_rbr[MAX_VOLTAGE_LEVELS][MAX_PRE_EMP_LEVELS] = {
+	{0x00, 0x0E, 0x15, 0x1A}, /* pe0, 0 db */
+	{0x00, 0x0E, 0x15, 0xFF}, /* pe1, 3.5 db */
+	{0x00, 0x0E, 0xFF, 0xFF}, /* pe2, 6.0 db */
+	{0x04, 0xFF, 0xFF, 0xFF}  /* pe3, 9.5 db */
+};
+
+static u8 const dp_swing_hbr_rbr[MAX_VOLTAGE_LEVELS][MAX_PRE_EMP_LEVELS] = {
+	{0x08, 0x0F, 0x16, 0x1F}, /* sw0, 0.4v */
+	{0x11, 0x1E, 0x1F, 0xFF}, /* sw1, 0.6v */
+	{0x1A, 0x1F, 0xFF, 0xFF}, /* sw1, 0.8v */
+	{0x1F, 0xFF, 0xFF, 0xFF}  /* sw1, 1.2v */
+};
+
 struct dp_catalog_io {
 	struct dp_io_data *dp_ahb;
 	struct dp_io_data *dp_aux;
@@ -212,11 +240,12 @@ static void dp_catalog_ctrl_phy_lane_cfg_v420(struct dp_catalog_ctrl *ctrl,
 }
 
 static void dp_catalog_ctrl_update_vx_px_v420(struct dp_catalog_ctrl *ctrl,
-		u8 v_level, u8 p_level)
+		u8 v_level, u8 p_level, bool high)
 {
 	struct dp_catalog_private_v420 *catalog;
 	struct dp_io_data *io_data;
 	u8 value0, value1;
+	u32 version;
 
 	if (!ctrl || !((v_level < MAX_VOLTAGE_LEVELS)
 		&& (p_level < MAX_PRE_EMP_LEVELS))) {
@@ -224,12 +253,25 @@ static void dp_catalog_ctrl_update_vx_px_v420(struct dp_catalog_ctrl *ctrl,
 		return;
 	}
 
-	catalog = dp_catalog_get_priv_v420(ctrl);
+	pr_debug("hw: v=%d p=%d, high=%d\n", v_level, p_level, high);
 
-	pr_debug("hw: v=%d p=%d\n", v_level, p_level);
+	catalog = dp_catalog_get_priv_v420(ctrl);
 
-	value0 = vm_voltage_swing[v_level][p_level];
-	value1 = vm_pre_emphasis[v_level][p_level];
+	io_data = catalog->io->dp_ahb;
+	version = dp_read(catalog->exe_mode, io_data, DP_HW_VERSION);
+
+	if (version == 0x10020003) {
+		if (high) {
+			value0 = dp_swing_hbr2_hbr3[v_level][p_level];
+			value1 = dp_pre_emp_hbr2_hbr3[v_level][p_level];
+		} else {
+			value0 = dp_swing_hbr_rbr[v_level][p_level];
+			value1 = dp_pre_emp_hbr_rbr[v_level][p_level];
+		}
+	} else {
+		value0 = vm_voltage_swing[v_level][p_level];
+		value1 = vm_pre_emphasis[v_level][p_level];
+	}
 
 	/* program default setting first */
 	io_data = catalog->io->dp_ln_tx0;

msm/dp/dp_ctrl.c

@@ -211,9 +211,14 @@ static int dp_ctrl_update_sink_vx_px(struct dp_ctrl_private *ctrl,
 static int dp_ctrl_update_vx_px(struct dp_ctrl_private *ctrl)
 {
 	struct dp_link *link = ctrl->link;
+	bool high = false;
+
+	if (ctrl->link->link_params.bw_code == DP_LINK_BW_5_4 ||
+	    ctrl->link->link_params.bw_code == DP_LINK_BW_8_1)
+		high = true;
 
 	ctrl->catalog->update_vx_px(ctrl->catalog,
-		link->phy_params.v_level, link->phy_params.p_level);
+		link->phy_params.v_level, link->phy_params.p_level, high);
 
 	return dp_ctrl_update_sink_vx_px(ctrl, link->phy_params.v_level,
 		link->phy_params.p_level);
@@ -396,9 +401,12 @@ static int dp_ctrl_link_training_2(struct dp_ctrl_private *ctrl)
 		ret = -EINVAL;
 		goto end;
 	}
+
+	if (pattern != DP_TRAINING_PATTERN_4)
+		pattern |= DP_LINK_SCRAMBLING_DISABLE;
+
 	ctrl->catalog->set_pattern(ctrl->catalog, pattern);
-	ret = dp_ctrl_train_pattern_set(ctrl,
-		pattern | DP_RECOVERED_CLOCK_OUT_EN);
+	ret = dp_ctrl_train_pattern_set(ctrl, pattern);
 	if (ret <= 0) {
 		ret = -EINVAL;
 		goto end;

msm/dp/dp_link.h

@@ -13,17 +13,17 @@
 #define DP_LINK_ENUM_STR(x)		#x
 
 enum dp_link_voltage_level {
-	DP_LINK_VOLTAGE_LEVEL_0	= 0,
-	DP_LINK_VOLTAGE_LEVEL_1	= 1,
-	DP_LINK_VOLTAGE_LEVEL_2	= 2,
-	DP_LINK_VOLTAGE_MAX	= DP_LINK_VOLTAGE_LEVEL_2,
+	DP_LINK_VOLTAGE_LEVEL_0,
+	DP_LINK_VOLTAGE_LEVEL_1,
+	DP_LINK_VOLTAGE_LEVEL_2,
+	DP_LINK_VOLTAGE_MAX = DP_LINK_VOLTAGE_LEVEL_2,
 };
 
 enum dp_link_preemaphasis_level {
-	DP_LINK_PRE_EMPHASIS_LEVEL_0	= 0,
-	DP_LINK_PRE_EMPHASIS_LEVEL_1	= 1,
-	DP_LINK_PRE_EMPHASIS_LEVEL_2	= 2,
-	DP_LINK_PRE_EMPHASIS_MAX	= DP_LINK_PRE_EMPHASIS_LEVEL_2,
+	DP_LINK_PRE_EMPHASIS_LEVEL_0,
+	DP_LINK_PRE_EMPHASIS_LEVEL_1,
+	DP_LINK_PRE_EMPHASIS_LEVEL_2,
+	DP_LINK_PRE_EMPHASIS_MAX = DP_LINK_PRE_EMPHASIS_LEVEL_2,
 };
 
 struct dp_link_sink_count {