LibreELEC.tv/packages/linux/patches/rockchip/rockchip-0091-FROMLIST-v4-phy-rockchip-samsung-hdptx-Switch-to-dri.patch

From 6b6748ccc444c2128195fda4430846c885c6c5e8 Mon Sep 17 00:00:00 2001
From: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Date: Mon, 7 Jul 2025 23:23:52 +0300
Subject: [PATCH 091/113] FROMLIST(v4): phy: rockchip: samsung-hdptx: Switch to
 driver specific HDMI config

In preparation to support the FRL operation mode which gets configured
via the lanes and rate per lane tuple, switch to a driver specific
struct for configuring the link rate and bpc.

This simplifies and optimizes the implementation by allowing implicit
switches between TMDS and FRL rates, without requiring additional checks
of the active PHY mode followed by recalculations of the link rate when
operating in FRL mode.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
---
 .../phy/rockchip/phy-rockchip-samsung-hdptx.c | 44 +++++++++++--------
 1 file changed, 25 insertions(+), 19 deletions(-)

diff --git a/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c b/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c
index 4195387108d8..a44614bc73e9 100644
--- a/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c
+++ b/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c
@@ -387,6 +387,11 @@ struct rk_hdptx_phy_cfg {
 	unsigned int phy_ids[MAX_HDPTX_PHY_NUM];
 };
 
+struct rk_hdptx_hdmi_cfg {
+	unsigned long long rate;
+	unsigned int bpc;
+};
+
 struct rk_hdptx_phy {
 	struct device *dev;
 	struct regmap *regmap;
@@ -394,7 +399,7 @@ struct rk_hdptx_phy {
 
 	int phy_id;
 	struct phy *phy;
-	struct phy_configure_opts_hdmi hdmi_cfg;
+	struct rk_hdptx_hdmi_cfg hdmi_cfg;
 	struct clk_bulk_data *clks;
 	int nr_clks;
 	struct reset_control_bulk_data rsts[RST_MAX];
@@ -965,19 +970,19 @@ static int rk_hdptx_tmds_ropll_cmn_config(struct rk_hdptx_phy *hdptx)
 	struct ropll_config rc = {0};
 	int i;
 
-	if (!hdptx->hdmi_cfg.tmds_char_rate)
+	if (!hdptx->hdmi_cfg.rate)
 		return 0;
 
 	for (i = 0; i < ARRAY_SIZE(rk_hdptx_tmds_ropll_cfg); i++)
-		if (hdptx->hdmi_cfg.tmds_char_rate == rk_hdptx_tmds_ropll_cfg[i].rate) {
+		if (hdptx->hdmi_cfg.rate == rk_hdptx_tmds_ropll_cfg[i].rate) {
 			cfg = &rk_hdptx_tmds_ropll_cfg[i];
 			break;
 		}
 
 	if (!cfg) {
-		if (!rk_hdptx_phy_clk_pll_calc(hdptx->hdmi_cfg.tmds_char_rate, &rc)) {
+		if (!rk_hdptx_phy_clk_pll_calc(hdptx->hdmi_cfg.rate, &rc)) {
 			dev_err(hdptx->dev, "%s cannot find pll cfg for rate=%llu\n",
-				__func__, hdptx->hdmi_cfg.tmds_char_rate);
+				__func__, hdptx->hdmi_cfg.rate);
 			return -EINVAL;
 		}
 
@@ -985,7 +990,7 @@ static int rk_hdptx_tmds_ropll_cmn_config(struct rk_hdptx_phy *hdptx)
 	}
 
 	dev_dbg(hdptx->dev, "%s rate=%llu mdiv=%u sdiv=%u sdm_en=%u k_sign=%u k=%u lc=%u\n",
-		__func__, hdptx->hdmi_cfg.tmds_char_rate, cfg->pms_mdiv, cfg->pms_sdiv + 1,
+		__func__, hdptx->hdmi_cfg.rate, cfg->pms_mdiv, cfg->pms_sdiv + 1,
 		cfg->sdm_en, cfg->sdm_num_sign, cfg->sdm_num, cfg->sdm_deno);
 
 	rk_hdptx_pre_power_up(hdptx);
@@ -1034,7 +1039,7 @@ static int rk_hdptx_tmds_ropll_mode_config(struct rk_hdptx_phy *hdptx)
 
 	regmap_write(hdptx->regmap, LNTOP_REG(0200), 0x06);
 
-	if (hdptx->hdmi_cfg.tmds_char_rate > HDMI14_MAX_RATE) {
+	if (hdptx->hdmi_cfg.rate > HDMI14_MAX_RATE) {
 		/* For 1/40 bitrate clk */
 		rk_hdptx_multi_reg_write(hdptx, rk_hdptx_tmds_lntop_highbr_seq);
 	} else {
@@ -1405,19 +1410,19 @@ static int rk_hdptx_phy_power_on(struct phy *phy)
 	int ret, lane;
 
 	if (mode != PHY_MODE_DP) {
-		if (!hdptx->hdmi_cfg.tmds_char_rate) {
+		if (!hdptx->hdmi_cfg.rate) {
 			/*
 			 * FIXME: Temporary workaround to setup TMDS char rate
 			 * from the RK DW HDMI QP bridge driver.
 			 * Will be removed as soon the switch to the HDMI PHY
 			 * configuration API has been completed on both ends.
 			 */
-			hdptx->hdmi_cfg.tmds_char_rate = phy_get_bus_width(hdptx->phy) & 0xfffffff;
-			hdptx->hdmi_cfg.tmds_char_rate *= 100;
+			hdptx->hdmi_cfg.rate = phy_get_bus_width(hdptx->phy) & 0xfffffff;
+			hdptx->hdmi_cfg.rate *= 100;
 		}
 
 		dev_dbg(hdptx->dev, "%s rate=%llu bpc=%u\n", __func__,
-			hdptx->hdmi_cfg.tmds_char_rate, hdptx->hdmi_cfg.bpc);
+			hdptx->hdmi_cfg.rate, hdptx->hdmi_cfg.bpc);
 	}
 
 	ret = rk_hdptx_phy_consumer_get(hdptx);
@@ -1764,12 +1769,13 @@ static int rk_hdptx_phy_configure(struct phy *phy, union phy_configure_opts *opt
 		if (ret) {
 			dev_err(hdptx->dev, "invalid hdmi params for phy configure\n");
 		} else {
-			hdptx->hdmi_cfg = opts->hdmi;
+			hdptx->hdmi_cfg.rate = opts->hdmi.tmds_char_rate;
+			hdptx->hdmi_cfg.bpc = opts->hdmi.bpc;
 			hdptx->restrict_rate_change = true;
 		}
 
 		dev_dbg(hdptx->dev, "%s rate=%llu bpc=%u\n", __func__,
-			hdptx->hdmi_cfg.tmds_char_rate, hdptx->hdmi_cfg.bpc);
+			hdptx->hdmi_cfg.rate, hdptx->hdmi_cfg.bpc);
 		return ret;
 	}
 
@@ -1949,7 +1955,7 @@ static long rk_hdptx_phy_clk_round_rate(struct clk_hw *hw, unsigned long rate,
 	 * To be dropped as soon as the RK DW HDMI QP bridge driver
 	 * switches to make use of phy_configure().
 	 */
-	if (!hdptx->restrict_rate_change && rate != hdptx->hdmi_cfg.tmds_char_rate) {
+	if (!hdptx->restrict_rate_change && rate != hdptx->hdmi_cfg.rate) {
 		struct phy_configure_opts_hdmi hdmi = {
 			.tmds_char_rate = rate,
 		};
@@ -1958,7 +1964,7 @@ static long rk_hdptx_phy_clk_round_rate(struct clk_hw *hw, unsigned long rate,
 		if (ret)
 			return ret;
 
-		hdptx->hdmi_cfg = hdmi;
+		hdptx->hdmi_cfg.rate = rate;
 	}
 
 	/*
@@ -1966,7 +1972,7 @@ static long rk_hdptx_phy_clk_round_rate(struct clk_hw *hw, unsigned long rate,
 	 * hence ensure rk_hdptx_phy_clk_set_rate() won't be invoked with
 	 * a different rate argument.
 	 */
-	return DIV_ROUND_CLOSEST_ULL(hdptx->hdmi_cfg.tmds_char_rate * 8, hdptx->hdmi_cfg.bpc);
+	return DIV_ROUND_CLOSEST_ULL(hdptx->hdmi_cfg.rate * 8, hdptx->hdmi_cfg.bpc);
 }
 
 static int rk_hdptx_phy_clk_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -1976,10 +1982,10 @@ static int rk_hdptx_phy_clk_set_rate(struct clk_hw *hw, unsigned long rate,
 	unsigned long long tmds_rate = DIV_ROUND_CLOSEST_ULL(rate * hdptx->hdmi_cfg.bpc, 8);
 
 	/* Revert any unlikely TMDS char rate change since round_rate() */
-	if (hdptx->hdmi_cfg.tmds_char_rate != tmds_rate) {
+	if (hdptx->hdmi_cfg.rate != tmds_rate) {
 		dev_warn(hdptx->dev, "Reverting unexpected rate change from %llu to %llu\n",
-			 tmds_rate, hdptx->hdmi_cfg.tmds_char_rate);
-		hdptx->hdmi_cfg.tmds_char_rate = tmds_rate;
+			 tmds_rate, hdptx->hdmi_cfg.rate);
+		hdptx->hdmi_cfg.rate = tmds_rate;
 	}
 
 	/*
-- 
2.34.1