1 files changed, 40 insertions, 67 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c
index 613ffcc68eba..34fa4130d5c4 100644
--- a/drivers/gpu/drm/i915/display/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
@@ -1195,17 +1195,6 @@ static const struct intel_cdclk_vals glk_cdclk_table[] = {
 	{}
 };
 
-static const struct intel_cdclk_vals cnl_cdclk_table[] = {
-	{ .refclk = 19200, .cdclk = 168000, .divider = 4, .ratio = 35 },
-	{ .refclk = 19200, .cdclk = 336000, .divider = 2, .ratio = 35 },
-	{ .refclk = 19200, .cdclk = 528000, .divider = 2, .ratio = 55 },
-
-	{ .refclk = 24000, .cdclk = 168000, .divider = 4, .ratio = 28 },
-	{ .refclk = 24000, .cdclk = 336000, .divider = 2, .ratio = 28 },
-	{ .refclk = 24000, .cdclk = 528000, .divider = 2, .ratio = 44 },
-	{}
-};
-
 static const struct intel_cdclk_vals icl_cdclk_table[] = {
 	{ .refclk = 19200, .cdclk = 172800, .divider = 2, .ratio = 18 },
 	{ .refclk = 19200, .cdclk = 192000, .divider = 2, .ratio = 20 },
@@ -1290,6 +1279,16 @@ static const struct intel_cdclk_vals adlp_cdclk_table[] = {
 	{}
 };
 
+static const struct intel_cdclk_vals dg2_cdclk_table[] = {
+	{ .refclk = 38400, .cdclk = 172800, .divider = 2, .ratio =  9 },
+	{ .refclk = 38400, .cdclk = 192000, .divider = 2, .ratio = 10 },
+	{ .refclk = 38400, .cdclk = 307200, .divider = 2, .ratio = 16 },
+	{ .refclk = 38400, .cdclk = 326400, .divider = 4, .ratio = 34 },
+	{ .refclk = 38400, .cdclk = 556800, .divider = 2, .ratio = 29 },
+	{ .refclk = 38400, .cdclk = 652800, .divider = 2, .ratio = 34 },
+	{}
+};
+
 static int bxt_calc_cdclk(struct drm_i915_private *dev_priv, int min_cdclk)
 {
 	const struct intel_cdclk_vals *table = dev_priv->cdclk.table;
@@ -1329,16 +1328,6 @@ static u8 bxt_calc_voltage_level(int cdclk)
 	return DIV_ROUND_UP(cdclk, 25000);
 }
 
-static u8 cnl_calc_voltage_level(int cdclk)
-{
-	if (cdclk > 336000)
-		return 2;
-	else if (cdclk > 168000)
-		return 1;
-	else
-		return 0;
-}
-
 static u8 icl_calc_voltage_level(int cdclk)
 {
 	if (cdclk > 556800)
@@ -1373,15 +1362,6 @@ static u8 tgl_calc_voltage_level(int cdclk)
 		return 0;
 }
 
-static void cnl_readout_refclk(struct drm_i915_private *dev_priv,
-			       struct intel_cdclk_config *cdclk_config)
-{
-	if (intel_de_read(dev_priv, SKL_DSSM) & CNL_DSSM_CDCLK_PLL_REFCLK_24MHz)
-		cdclk_config->ref = 24000;
-	else
-		cdclk_config->ref = 19200;
-}
-
 static void icl_readout_refclk(struct drm_i915_private *dev_priv,
 			       struct intel_cdclk_config *cdclk_config)
 {
@@ -1408,10 +1388,10 @@ static void bxt_de_pll_readout(struct drm_i915_private *dev_priv,
 {
 	u32 val, ratio;
 
-	if (DISPLAY_VER(dev_priv) >= 11)
+	if (IS_DG2(dev_priv))
+		cdclk_config->ref = 38400;
+	else if (DISPLAY_VER(dev_priv) >= 11)
 		icl_readout_refclk(dev_priv, cdclk_config);
-	else if (IS_CANNONLAKE(dev_priv))
-		cnl_readout_refclk(dev_priv, cdclk_config);
 	else
 		cdclk_config->ref = 19200;
 
@@ -1427,11 +1407,11 @@ static void bxt_de_pll_readout(struct drm_i915_private *dev_priv,
 	}
 
 	/*
-	 * CNL+ have the ratio directly in the PLL enable register, gen9lp had
-	 * it in a separate PLL control register.
+	 * DISPLAY_VER >= 11 have the ratio directly in the PLL enable register,
+	 * gen9lp had it in a separate PLL control register.
 	 */
-	if (DISPLAY_VER(dev_priv) >= 11 || IS_CANNONLAKE(dev_priv))
-		ratio = val & CNL_CDCLK_PLL_RATIO_MASK;
+	if (DISPLAY_VER(dev_priv) >= 11)
+		ratio = val & ICL_CDCLK_PLL_RATIO_MASK;
 	else
 		ratio = intel_de_read(dev_priv, BXT_DE_PLL_CTL) & BXT_DE_PLL_RATIO_MASK;
 
@@ -1518,7 +1498,7 @@ static void bxt_de_pll_enable(struct drm_i915_private *dev_priv, int vco)
 	dev_priv->cdclk.hw.vco = vco;
 }
 
-static void cnl_cdclk_pll_disable(struct drm_i915_private *dev_priv)
+static void icl_cdclk_pll_disable(struct drm_i915_private *dev_priv)
 {
 	intel_de_rmw(dev_priv, BXT_DE_PLL_ENABLE,
 		     BXT_DE_PLL_PLL_ENABLE, 0);
@@ -1530,12 +1510,12 @@ static void cnl_cdclk_pll_disable(struct drm_i915_private *dev_priv)
 	dev_priv->cdclk.hw.vco = 0;
 }
 
-static void cnl_cdclk_pll_enable(struct drm_i915_private *dev_priv, int vco)
+static void icl_cdclk_pll_enable(struct drm_i915_private *dev_priv, int vco)
 {
 	int ratio = DIV_ROUND_CLOSEST(vco, dev_priv->cdclk.hw.ref);
 	u32 val;
 
-	val = CNL_CDCLK_PLL_RATIO(ratio);
+	val = ICL_CDCLK_PLL_RATIO(ratio);
 	intel_de_write(dev_priv, BXT_DE_PLL_ENABLE, val);
 
 	val |= BXT_DE_PLL_PLL_ENABLE;
@@ -1548,18 +1528,13 @@ static void cnl_cdclk_pll_enable(struct drm_i915_private *dev_priv, int vco)
 	dev_priv->cdclk.hw.vco = vco;
 }
 
-static bool has_cdclk_crawl(struct drm_i915_private *i915)
-{
-	return INTEL_INFO(i915)->has_cdclk_crawl;
-}
-
 static void adlp_cdclk_pll_crawl(struct drm_i915_private *dev_priv, int vco)
 {
 	int ratio = DIV_ROUND_CLOSEST(vco, dev_priv->cdclk.hw.ref);
 	u32 val;
 
 	/* Write PLL ratio without disabling */
-	val = CNL_CDCLK_PLL_RATIO(ratio) | BXT_DE_PLL_PLL_ENABLE;
+	val = ICL_CDCLK_PLL_RATIO(ratio) | BXT_DE_PLL_PLL_ENABLE;
 	intel_de_write(dev_priv, BXT_DE_PLL_ENABLE, val);
 
 	/* Submit freq change request */
@@ -1628,7 +1603,7 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
 	int ret;
 
 	/* Inform power controller of upcoming frequency change. */
-	if (DISPLAY_VER(dev_priv) >= 11 || IS_CANNONLAKE(dev_priv))
+	if (DISPLAY_VER(dev_priv) >= 11)
 		ret = skl_pcode_request(dev_priv, SKL_PCODE_CDCLK_CONTROL,
 					SKL_CDCLK_PREPARE_FOR_CHANGE,
 					SKL_CDCLK_READY_FOR_CHANGE,
@@ -1649,16 +1624,16 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
 		return;
 	}
 
-	if (has_cdclk_crawl(dev_priv) && dev_priv->cdclk.hw.vco > 0 && vco > 0) {
+	if (HAS_CDCLK_CRAWL(dev_priv) && dev_priv->cdclk.hw.vco > 0 && vco > 0) {
 		if (dev_priv->cdclk.hw.vco != vco)
 			adlp_cdclk_pll_crawl(dev_priv, vco);
-	} else if (DISPLAY_VER(dev_priv) >= 11 || IS_CANNONLAKE(dev_priv)) {
+	} else if (DISPLAY_VER(dev_priv) >= 11) {
 		if (dev_priv->cdclk.hw.vco != 0 &&
 		    dev_priv->cdclk.hw.vco != vco)
-			cnl_cdclk_pll_disable(dev_priv);
+			icl_cdclk_pll_disable(dev_priv);
 
 		if (dev_priv->cdclk.hw.vco != vco)
-			cnl_cdclk_pll_enable(dev_priv, vco);
+			icl_cdclk_pll_enable(dev_priv, vco);
 	} else {
 		if (dev_priv->cdclk.hw.vco != 0 &&
 		    dev_priv->cdclk.hw.vco != vco)
@@ -1684,7 +1659,7 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
 	if (pipe != INVALID_PIPE)
 		intel_wait_for_vblank(dev_priv, pipe);
 
-	if (DISPLAY_VER(dev_priv) >= 11 || IS_CANNONLAKE(dev_priv)) {
+	if (DISPLAY_VER(dev_priv) >= 11) {
 		ret = sandybridge_pcode_write(dev_priv, SKL_PCODE_CDCLK_CONTROL,
 					      cdclk_config->voltage_level);
 	} else {
@@ -1709,7 +1684,7 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
 
 	intel_update_cdclk(dev_priv);
 
-	if (DISPLAY_VER(dev_priv) >= 11 || IS_CANNONLAKE(dev_priv))
+	if (DISPLAY_VER(dev_priv) >= 11)
 		/*
 		 * Can't read out the voltage level :(
 		 * Let's just assume everything is as expected.
@@ -1857,7 +1832,7 @@ static bool intel_cdclk_can_crawl(struct drm_i915_private *dev_priv,
 {
 	int a_div, b_div;
 
-	if (!has_cdclk_crawl(dev_priv))
+	if (!HAS_CDCLK_CRAWL(dev_priv))
 		return false;
 
 	/*
@@ -2118,7 +2093,7 @@ int intel_crtc_compute_min_cdclk(const struct intel_crtc_state *crtc_state)
 	    crtc_state->port_clock >= 540000 &&
 	    crtc_state->lane_count == 4) {
 		if (DISPLAY_VER(dev_priv) == 10) {
-			/* Display WA #1145: glk,cnl */
+			/* Display WA #1145: glk */
 			min_cdclk = max(316800, min_cdclk);
 		} else if (DISPLAY_VER(dev_priv) == 9 || IS_BROADWELL(dev_priv)) {
 			/* Display WA #1144: skl,bxt */
@@ -2239,7 +2214,7 @@ static int intel_compute_min_cdclk(struct intel_cdclk_state *cdclk_state)
 
 /*
  * Account for port clock min voltage level requirements.
- * This only really does something on CNL+ but can be
+ * This only really does something on DISPLA_VER >= 11 but can be
  * called on earlier platforms as well.
  *
  * Note that this functions assumes that 0 is
@@ -2653,8 +2628,6 @@ void intel_update_max_cdclk(struct drm_i915_private *dev_priv)
 			dev_priv->max_cdclk_freq = 648000;
 		else
 			dev_priv->max_cdclk_freq = 652800;
-	} else if (IS_CANNONLAKE(dev_priv)) {
-		dev_priv->max_cdclk_freq = 528000;
 	} else if (IS_GEMINILAKE(dev_priv)) {
 		dev_priv->max_cdclk_freq = 316800;
 	} else if (IS_BROXTON(dev_priv)) {
@@ -2878,13 +2851,19 @@ u32 intel_read_rawclk(struct drm_i915_private *dev_priv)
  */
 void intel_init_cdclk_hooks(struct drm_i915_private *dev_priv)
 {
-	if (IS_ALDERLAKE_P(dev_priv)) {
+	if (IS_DG2(dev_priv)) {
+		dev_priv->display.set_cdclk = bxt_set_cdclk;
+		dev_priv->display.bw_calc_min_cdclk = skl_bw_calc_min_cdclk;
+		dev_priv->display.modeset_calc_cdclk = bxt_modeset_calc_cdclk;
+		dev_priv->display.calc_voltage_level = tgl_calc_voltage_level;
+		dev_priv->cdclk.table = dg2_cdclk_table;
+	} else if (IS_ALDERLAKE_P(dev_priv)) {
 		dev_priv->display.set_cdclk = bxt_set_cdclk;
 		dev_priv->display.bw_calc_min_cdclk = skl_bw_calc_min_cdclk;
 		dev_priv->display.modeset_calc_cdclk = bxt_modeset_calc_cdclk;
 		dev_priv->display.calc_voltage_level = tgl_calc_voltage_level;
-		/* Wa_22011320316:adlp[a0] */
-		if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_A0))
+		/* Wa_22011320316:adl-p[a0] */
+		if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
 			dev_priv->cdclk.table = adlp_a_step_cdclk_table;
 		else
 			dev_priv->cdclk.table = adlp_cdclk_table;
@@ -2912,12 +2891,6 @@ void intel_init_cdclk_hooks(struct drm_i915_private *dev_priv)
 		dev_priv->display.modeset_calc_cdclk = bxt_modeset_calc_cdclk;
 		dev_priv->display.calc_voltage_level = icl_calc_voltage_level;
 		dev_priv->cdclk.table = icl_cdclk_table;
-	} else if (IS_CANNONLAKE(dev_priv)) {
-		dev_priv->display.bw_calc_min_cdclk = skl_bw_calc_min_cdclk;
-		dev_priv->display.set_cdclk = bxt_set_cdclk;
-		dev_priv->display.modeset_calc_cdclk = bxt_modeset_calc_cdclk;
-		dev_priv->display.calc_voltage_level = cnl_calc_voltage_level;
-		dev_priv->cdclk.table = cnl_cdclk_table;
 	} else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
 		dev_priv->display.bw_calc_min_cdclk = skl_bw_calc_min_cdclk;
 		dev_priv->display.set_cdclk = bxt_set_cdclk;