[Intel-gfx] [PATCH 07/18] drm/i915/adl_s: Configure Port clock registers for ADL-S

[Aditya Swarup <aditya.swarup@intel.com>]

Add changes to configure port clock registers for ADL-S. Combo phy port
clocks are configured by DPCLKA_CFGCR0 and DPCLKA_CFGCR1 registers.

The DDI to internal clock mappings in DPCLKA_CFGCR0 register for ADL-S
translates to
DDI A -> DDIA
DDI B -> USBC1
DDI I -> USBC2

For DPCLKA_CFGCR1
DDI J -> USBC3
DDI K -> USBC4

Bspec: 50287
Bspec: 53812
Bspec: 53723

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Aditya Swarup <aditya.swarup@intel.com>
---
 drivers/gpu/drm/i915/display/intel_ddi.c     | 64 +++++++++++++-------
 drivers/gpu/drm/i915/display/intel_display.c | 18 +++++-
 drivers/gpu/drm/i915/i915_reg.h              | 25 +++++++-
 3 files changed, 84 insertions(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 09811be08cfe..670be712f6ba 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -2976,25 +2976,30 @@ static void icl_map_plls_to_ports(struct intel_encoder *encoder,
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	struct intel_shared_dpll *pll = crtc_state->shared_dpll;
 	enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
-	u32 val;
+	u32 val, mask, sel;
+	i915_reg_t reg;
+
+	if (IS_ALDERLAKE_S(dev_priv)) {
+		reg = ADLS_DPCLKA_CFGCR(phy);
+		mask = ADLS_DPCLKA_CFGCR_DDI_CLK_SEL_MASK(phy);
+		sel = ((pll->info->id) << ADLS_DPCLKA_CFGCR_DDI_SHIFT(phy));
+	} else if (IS_ROCKETLAKE(dev_priv)) {
+		reg = ICL_DPCLKA_CFGCR0;
+		mask = RKL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy);
+		sel = RKL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy);
+	} else {
+		reg = ICL_DPCLKA_CFGCR0;
+		mask = ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy);
+		sel = ICL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy);
+	}
 
 	mutex_lock(&dev_priv->dpll.lock);
 
-	val = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
+	val = intel_de_read(dev_priv, reg);
 	drm_WARN_ON(&dev_priv->drm,
 		    (val & icl_dpclka_cfgcr0_clk_off(dev_priv, phy)) == 0);
 
 	if (intel_phy_is_combo(dev_priv, phy)) {
-		u32 mask, sel;
-
-		if (IS_ROCKETLAKE(dev_priv)) {
-			mask = RKL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy);
-			sel = RKL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy);
-		} else {
-			mask = ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy);
-			sel = ICL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy);
-		}
-
 		/*
 		 * Even though this register references DDIs, note that we
 		 * want to pass the PHY rather than the port (DDI).  For
@@ -3007,12 +3012,12 @@ static void icl_map_plls_to_ports(struct intel_encoder *encoder,
 		 */
 		val &= ~mask;
 		val |= sel;
-		intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, val);
-		intel_de_posting_read(dev_priv, ICL_DPCLKA_CFGCR0);
+		intel_de_write(dev_priv, reg, val);
+		intel_de_posting_read(dev_priv, reg);
 	}
 
 	val &= ~icl_dpclka_cfgcr0_clk_off(dev_priv, phy);
-	intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, val);
+	intel_de_write(dev_priv, reg, val);
 
 	mutex_unlock(&dev_priv->dpll.lock);
 }
@@ -3025,9 +3030,17 @@ static void icl_unmap_plls_to_ports(struct intel_encoder *encoder)
 
 	mutex_lock(&dev_priv->dpll.lock);
 
-	val = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
+	if (IS_ALDERLAKE_S(dev_priv))
+		val = intel_de_read(dev_priv, ADLS_DPCLKA_CFGCR(phy));
+	else
+		val = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
+
 	val |= icl_dpclka_cfgcr0_clk_off(dev_priv, phy);
-	intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, val);
+
+	if (IS_ALDERLAKE_S(dev_priv))
+		intel_de_write(dev_priv, ADLS_DPCLKA_CFGCR(phy), val);
+	else
+		intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, val);
 
 	mutex_unlock(&dev_priv->dpll.lock);
 }
@@ -3036,13 +3049,19 @@ static void icl_sanitize_port_clk_off(struct drm_i915_private *dev_priv,
 				      u32 port_mask, bool ddi_clk_needed)
 {
 	enum port port;
+	bool ddi_clk_off;
 	u32 val;
 
-	val = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
 	for_each_port_masked(port, port_mask) {
 		enum phy phy = intel_port_to_phy(dev_priv, port);
-		bool ddi_clk_off = val & icl_dpclka_cfgcr0_clk_off(dev_priv,
-								   phy);
+
+		if (IS_ALDERLAKE_S(dev_priv))
+			val = intel_de_read(dev_priv, ADLS_DPCLKA_CFGCR(phy));
+		else
+			val = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0);
+
+		ddi_clk_off = val & icl_dpclka_cfgcr0_clk_off(dev_priv,
+							      phy);
 
 		if (ddi_clk_needed == !ddi_clk_off)
 			continue;
@@ -3058,7 +3077,10 @@ static void icl_sanitize_port_clk_off(struct drm_i915_private *dev_priv,
 			   "PHY %c is disabled/in DSI mode with an ungated DDI clock, gate it\n",
 			   phy_name(phy));
 		val |= icl_dpclka_cfgcr0_clk_off(dev_priv, phy);
-		intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, val);
+		if (IS_ALDERLAKE_S(dev_priv))
+			intel_de_write(dev_priv, ADLS_DPCLKA_CFGCR(phy), val);
+		else
+			intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, val);
 	}
 }
 
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 70ca5d2e5b0a..b3714ed00786 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -10958,6 +10958,20 @@ static void icl_get_ddi_pll(struct drm_i915_private *dev_priv, enum port port,
 	icl_set_active_port_dpll(pipe_config, port_dpll_id);
 }
 
+static void adls_get_ddi_pll(struct drm_i915_private *dev_priv, enum port port,
+			     struct intel_crtc_state *pipe_config)
+{
+	enum phy phy = intel_port_to_phy(dev_priv, port);
+	enum intel_dpll_id id;
+	u32 val;
+
+	val = I915_READ(ADLS_DPCLKA_CFGCR(phy));
+	val &= ADLS_DPCLKA_CFGCR_DDI_CLK_SEL_MASK(phy);
+	id = val >> ADLS_DPCLKA_CFGCR_DDI_SHIFT(phy);
+
+	pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id);
+}
+
 static void bxt_get_ddi_pll(struct drm_i915_private *dev_priv,
 				enum port port,
 				struct intel_crtc_state *pipe_config)
@@ -11205,7 +11219,9 @@ static void hsw_get_ddi_port_state(struct intel_crtc *crtc,
 			port = TRANS_DDI_FUNC_CTL_VAL_TO_PORT(tmp);
 	}
 
-	if (INTEL_GEN(dev_priv) >= 11)
+	if (IS_ALDERLAKE_S(dev_priv))
+		adls_get_ddi_pll(dev_priv, port, pipe_config);
+	else if (INTEL_GEN(dev_priv) >= 11)
 		icl_get_ddi_pll(dev_priv, port, pipe_config);
 	else if (IS_CANNONLAKE(dev_priv))
 		cnl_get_ddi_pll(dev_priv, port, pipe_config);
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index e617d24a2912..604fce828a7d 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -230,12 +230,14 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
 #define _TRANS(tran, a, b)		_PICK_EVEN(tran, a, b)
 #define _PORT(port, a, b)		_PICK_EVEN(port, a, b)
 #define _PLL(pll, a, b)			_PICK_EVEN(pll, a, b)
+#define _PHY(phy, a, b)                 _PICK_EVEN(phy, a, b)
 
 #define _MMIO_PIPE(pipe, a, b)		_MMIO(_PIPE(pipe, a, b))
 #define _MMIO_PLANE(plane, a, b)	_MMIO(_PLANE(plane, a, b))
 #define _MMIO_TRANS(tran, a, b)		_MMIO(_TRANS(tran, a, b))
 #define _MMIO_PORT(port, a, b)		_MMIO(_PORT(port, a, b))
 #define _MMIO_PLL(pll, a, b)		_MMIO(_PLL(pll, a, b))
+#define _MMIO_PHY(phy, a, b)            _MMIO(_PHY(phy, a, b))
 
 #define _PHY3(phy, ...)			_PICK(phy, __VA_ARGS__)
 
@@ -10297,7 +10299,7 @@ enum skl_power_gate {
 #define  DPCLKA_CFGCR0_DDI_CLK_SEL(pll, port)	((pll) << DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(port))
 
 #define ICL_DPCLKA_CFGCR0			_MMIO(0x164280)
-#define  ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy)	(1 << _PICK(phy, 10, 11, 24))
+#define  ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy)	(1 << _PICK(phy, 10, 11, 24, 4, 5))
 #define  RKL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy)	REG_BIT((phy) + 10)
 #define  ICL_DPCLKA_CFGCR0_TC_CLK_OFF(tc_port)	(1 << ((tc_port) < PORT_TC4 ? \
 						       (tc_port) + 12 : \
@@ -10311,6 +10313,27 @@ enum skl_power_gate {
 #define  RKL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll, phy) \
 	((pll) << RKL_DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(phy))
 
+/* ADLS Clocks */
+#define _ADLS_DPCLKA_CFGCR0			0x164280
+#define _ADLS_DPCLKA_CFGCR1			0x1642BC
+#define ADLS_DPCLKA_CFGCR(phy)			_MMIO_PHY((phy) / 3, \
+							  _ADLS_DPCLKA_CFGCR0, \
+							  _ADLS_DPCLKA_CFGCR1)
+#define  ADLS_DPCLKA_CFGCR_DDI_SHIFT(phy)		(((phy) % 3) * 2)
+/* ADLS DPCLKA_CFGCR0 DDI mask */
+#define  ADLS_DPCLKA_DDII_SEL_MASK			REG_GENMASK(5, 4)
+#define  ADLS_DPCLKA_DDIB_SEL_MASK			REG_GENMASK(3, 2)
+#define  ADLS_DPCLKA_DDIA_SEL_MASK			REG_GENMASK(1, 0)
+/* ADLS DPCLKA_CFGCR1 DDI mask */
+#define  ADLS_DPCLKA_DDIK_SEL_MASK			REG_GENMASK(3, 2)
+#define  ADLS_DPCLKA_DDIJ_SEL_MASK			REG_GENMASK(1, 0)
+#define  ADLS_DPCLKA_CFGCR_DDI_CLK_SEL_MASK(phy)	_PICK((phy), \
+							ADLS_DPCLKA_DDIA_SEL_MASK, \
+							ADLS_DPCLKA_DDIB_SEL_MASK, \
+							ADLS_DPCLKA_DDII_SEL_MASK, \
+							ADLS_DPCLKA_DDIJ_SEL_MASK, \
+							ADLS_DPCLKA_DDIK_SEL_MASK)
+
 /* CNL PLL */
 #define DPLL0_ENABLE		0x46010
 #define DPLL1_ENABLE		0x46014
-- 
2.27.0

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