[PATCH v4 06/19] drm/i915/xe2hpd: Add new C20 PHY SRAM address

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Xe2_HPD has different offsets for C20 PHY SRAM configuration context
location. Use the display version to select the right address.

Note that Xe2_LPD uses the same C20 SRAM offsets used by Xe_LPDP (i.e.
MTL's display). According to the BSpec, currently, only Xe2_HPD has
different offsets, so make sure it is the only display using them in the
driver.

v2:
* Redesigned how the right offsets are selected for different display
IP versions.

Bspec: 67610
Cc: Clint Taylor <Clinton.A.Taylor@xxxxxxxxx>
Cc: Gustavo Sousa <gustavo.sousa@xxxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@xxxxxxxxx>
Signed-off-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
---
 drivers/gpu/drm/i915/display/intel_cx0_phy.c  | 65 ++++++++++++-------
 .../gpu/drm/i915/display/intel_cx0_phy_regs.h | 48 +++++++++++---
 2 files changed, 81 insertions(+), 32 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
index 33a612892d94..9bf882b439f4 100644
--- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c
+++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
@@ -2161,6 +2161,7 @@ static void intel_c20pll_readout_hw_state(struct intel_encoder *encoder,
 	bool cntx;
 	intel_wakeref_t wakeref;
 	int i;
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
 
 	wakeref = intel_cx0_phy_transaction_begin(encoder);
 
@@ -2170,42 +2171,50 @@ static void intel_c20pll_readout_hw_state(struct intel_encoder *encoder,
 	/* Read Tx configuration */
 	for (i = 0; i < ARRAY_SIZE(pll_state->tx); i++) {
 		if (cntx)
-			pll_state->tx[i] = intel_c20_sram_read(encoder, INTEL_CX0_LANE0,
-							       PHY_C20_B_TX_CNTX_CFG(i));
+			pll_state->tx[i] = intel_c20_sram_read(encoder,
+							       INTEL_CX0_LANE0,
+							       PHY_C20_B_TX_CNTX_CFG(i915, i));
 		else
-			pll_state->tx[i] = intel_c20_sram_read(encoder, INTEL_CX0_LANE0,
-							       PHY_C20_A_TX_CNTX_CFG(i));
+			pll_state->tx[i] = intel_c20_sram_read(encoder,
+							       INTEL_CX0_LANE0,
+							       PHY_C20_A_TX_CNTX_CFG(i915, i));
 	}
 
 	/* Read common configuration */
 	for (i = 0; i < ARRAY_SIZE(pll_state->cmn); i++) {
 		if (cntx)
-			pll_state->cmn[i] = intel_c20_sram_read(encoder, INTEL_CX0_LANE0,
-								PHY_C20_B_CMN_CNTX_CFG(i));
+			pll_state->cmn[i] = intel_c20_sram_read(encoder,
+								INTEL_CX0_LANE0,
+								PHY_C20_B_CMN_CNTX_CFG(i915, i));
 		else
-			pll_state->cmn[i] = intel_c20_sram_read(encoder, INTEL_CX0_LANE0,
-								PHY_C20_A_CMN_CNTX_CFG(i));
+			pll_state->cmn[i] = intel_c20_sram_read(encoder,
+								INTEL_CX0_LANE0,
+								PHY_C20_A_CMN_CNTX_CFG(i915, i));
 	}
 
 	if (intel_c20phy_use_mpllb(pll_state)) {
 		/* MPLLB configuration */
 		for (i = 0; i < ARRAY_SIZE(pll_state->mpllb); i++) {
 			if (cntx)
-				pll_state->mpllb[i] = intel_c20_sram_read(encoder, INTEL_CX0_LANE0,
-									  PHY_C20_B_MPLLB_CNTX_CFG(i));
+				pll_state->mpllb[i] = intel_c20_sram_read(encoder,
+									  INTEL_CX0_LANE0,
+									  PHY_C20_B_MPLLB_CNTX_CFG(i915, i));
 			else
-				pll_state->mpllb[i] = intel_c20_sram_read(encoder, INTEL_CX0_LANE0,
-									  PHY_C20_A_MPLLB_CNTX_CFG(i));
+				pll_state->mpllb[i] = intel_c20_sram_read(encoder,
+									  INTEL_CX0_LANE0,
+									  PHY_C20_A_MPLLB_CNTX_CFG(i915, i));
 		}
 	} else {
 		/* MPLLA configuration */
 		for (i = 0; i < ARRAY_SIZE(pll_state->mplla); i++) {
 			if (cntx)
-				pll_state->mplla[i] = intel_c20_sram_read(encoder, INTEL_CX0_LANE0,
-									  PHY_C20_B_MPLLA_CNTX_CFG(i));
+				pll_state->mplla[i] = intel_c20_sram_read(encoder,
+									  INTEL_CX0_LANE0,
+									  PHY_C20_B_MPLLA_CNTX_CFG(i915, i));
 			else
-				pll_state->mplla[i] = intel_c20_sram_read(encoder, INTEL_CX0_LANE0,
-									  PHY_C20_A_MPLLA_CNTX_CFG(i));
+				pll_state->mplla[i] = intel_c20_sram_read(encoder,
+									  INTEL_CX0_LANE0,
+									  PHY_C20_A_MPLLA_CNTX_CFG(i915, i));
 		}
 	}
 
@@ -2363,17 +2372,25 @@ static void intel_c20_pll_program(struct drm_i915_private *i915,
 	/* 3.1 Tx configuration */
 	for (i = 0; i < ARRAY_SIZE(pll_state->tx); i++) {
 		if (cntx)
-			intel_c20_sram_write(encoder, INTEL_CX0_LANE0, PHY_C20_A_TX_CNTX_CFG(i), pll_state->tx[i]);
+			intel_c20_sram_write(encoder, INTEL_CX0_LANE0,
+					     PHY_C20_A_TX_CNTX_CFG(i915, i),
+					     pll_state->tx[i]);
 		else
-			intel_c20_sram_write(encoder, INTEL_CX0_LANE0, PHY_C20_B_TX_CNTX_CFG(i), pll_state->tx[i]);
+			intel_c20_sram_write(encoder, INTEL_CX0_LANE0,
+					     PHY_C20_B_TX_CNTX_CFG(i915, i),
+					     pll_state->tx[i]);
 	}
 
 	/* 3.2 common configuration */
 	for (i = 0; i < ARRAY_SIZE(pll_state->cmn); i++) {
 		if (cntx)
-			intel_c20_sram_write(encoder, INTEL_CX0_LANE0, PHY_C20_A_CMN_CNTX_CFG(i), pll_state->cmn[i]);
+			intel_c20_sram_write(encoder, INTEL_CX0_LANE0,
+					     PHY_C20_A_CMN_CNTX_CFG(i915, i),
+					     pll_state->cmn[i]);
 		else
-			intel_c20_sram_write(encoder, INTEL_CX0_LANE0, PHY_C20_B_CMN_CNTX_CFG(i), pll_state->cmn[i]);
+			intel_c20_sram_write(encoder, INTEL_CX0_LANE0,
+					     PHY_C20_B_CMN_CNTX_CFG(i915, i),
+					     pll_state->cmn[i]);
 	}
 
 	/* 3.3 mpllb or mplla configuration */
@@ -2381,22 +2398,22 @@ static void intel_c20_pll_program(struct drm_i915_private *i915,
 		for (i = 0; i < ARRAY_SIZE(pll_state->mpllb); i++) {
 			if (cntx)
 				intel_c20_sram_write(encoder, INTEL_CX0_LANE0,
-						     PHY_C20_A_MPLLB_CNTX_CFG(i),
+						     PHY_C20_A_MPLLB_CNTX_CFG(i915, i),
 						     pll_state->mpllb[i]);
 			else
 				intel_c20_sram_write(encoder, INTEL_CX0_LANE0,
-						     PHY_C20_B_MPLLB_CNTX_CFG(i),
+						     PHY_C20_B_MPLLB_CNTX_CFG(i915, i),
 						     pll_state->mpllb[i]);
 		}
 	} else {
 		for (i = 0; i < ARRAY_SIZE(pll_state->mplla); i++) {
 			if (cntx)
 				intel_c20_sram_write(encoder, INTEL_CX0_LANE0,
-						     PHY_C20_A_MPLLA_CNTX_CFG(i),
+						     PHY_C20_A_MPLLA_CNTX_CFG(i915, i),
 						     pll_state->mplla[i]);
 			else
 				intel_c20_sram_write(encoder, INTEL_CX0_LANE0,
-						     PHY_C20_B_MPLLA_CNTX_CFG(i),
+						     PHY_C20_B_MPLLA_CNTX_CFG(i915, i),
 						     pll_state->mplla[i]);
 		}
 	}
diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h b/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h
index bdd0c8c4ef97..269ca0872510 100644
--- a/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h
+++ b/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h
@@ -254,18 +254,50 @@
 #define PHY_C20_VDR_CUSTOM_WIDTH	0xD02
 #define   PHY_C20_CUSTOM_WIDTH_MASK	REG_GENMASK(1, 0)
 #define   PHY_C20_CUSTOM_WIDTH(val)	REG_FIELD_PREP8(PHY_C20_CUSTOM_WIDTH_MASK, val)
-#define PHY_C20_A_TX_CNTX_CFG(idx)	(0xCF2E - (idx))
-#define PHY_C20_B_TX_CNTX_CFG(idx)	(0xCF2A - (idx))
+
+#define _MTL_C20_A_TX_CNTX_CFG	0xCF2E
+#define _MTL_C20_B_TX_CNTX_CFG	0xCF2A
+#define _MTL_C20_A_CMN_CNTX_CFG	0xCDAA
+#define _MTL_C20_B_CMN_CNTX_CFG	0xCDA5
+#define _MTL_C20_A_MPLLA_CFG	0xCCF0
+#define _MTL_C20_B_MPLLA_CFG	0xCCE5
+#define _MTL_C20_A_MPLLB_CFG	0xCB5A
+#define _MTL_C20_B_MPLLB_CFG	0xCB4E
+
+#define _XE2HPD_C20_A_TX_CNTX_CFG	0xCF5E
+#define _XE2HPD_C20_B_TX_CNTX_CFG	0xCF5A
+#define _XE2HPD_C20_A_CMN_CNTX_CFG	0xCE8E
+#define _XE2HPD_C20_B_CMN_CNTX_CFG	0xCE89
+#define _XE2HPD_C20_A_MPLLA_CFG		0xCE58
+#define _XE2HPD_C20_B_MPLLA_CFG		0xCE4D
+#define _XE2HPD_C20_A_MPLLB_CFG		0xCCC2
+#define _XE2HPD_C20_B_MPLLB_CFG		0xCCB6
+
+#define _IS_XE2HPD_C20(i915)	(DISPLAY_VER_FULL(i915) == IP_VER(14,1))
+
+#define PHY_C20_A_TX_CNTX_CFG(i915, idx) \
+		((_IS_XE2HPD_C20(i915) ? _XE2HPD_C20_A_TX_CNTX_CFG : _MTL_C20_A_TX_CNTX_CFG) - (idx))
+#define PHY_C20_B_TX_CNTX_CFG(i915, idx) \
+		((_IS_XE2HPD_C20(i915) ? _XE2HPD_C20_B_TX_CNTX_CFG : _MTL_C20_B_TX_CNTX_CFG) - (idx))
 #define   C20_PHY_TX_RATE		REG_GENMASK(2, 0)
-#define PHY_C20_A_CMN_CNTX_CFG(idx)	(0xCDAA - (idx))
-#define PHY_C20_B_CMN_CNTX_CFG(idx)	(0xCDA5 - (idx))
-#define PHY_C20_A_MPLLA_CNTX_CFG(idx)	(0xCCF0 - (idx))
-#define PHY_C20_B_MPLLA_CNTX_CFG(idx)	(0xCCE5 - (idx))
+
+#define PHY_C20_A_CMN_CNTX_CFG(i915, idx) \
+		((_IS_XE2HPD_C20(i915) ? _XE2HPD_C20_A_CMN_CNTX_CFG : _MTL_C20_A_CMN_CNTX_CFG) - (idx))
+#define PHY_C20_B_CMN_CNTX_CFG(i915, idx) \
+		((_IS_XE2HPD_C20(i915) ? _XE2HPD_C20_B_CMN_CNTX_CFG : _MTL_C20_B_CMN_CNTX_CFG) - (idx))
+#define PHY_C20_A_MPLLA_CNTX_CFG(i915, idx) \
+		((_IS_XE2HPD_C20(i915) ? _XE2HPD_C20_A_MPLLA_CFG : _MTL_C20_A_MPLLA_CFG) - (idx))
+#define PHY_C20_B_MPLLA_CNTX_CFG(i915, idx) \
+		((_IS_XE2HPD_C20(i915) ? _XE2HPD_C20_B_MPLLA_CFG : _MTL_C20_B_MPLLA_CFG) - (idx))
 #define   C20_MPLLA_FRACEN		REG_BIT(14)
 #define   C20_FB_CLK_DIV4_EN		REG_BIT(13)
 #define   C20_MPLLA_TX_CLK_DIV_MASK	REG_GENMASK(10, 8)
-#define PHY_C20_A_MPLLB_CNTX_CFG(idx)	(0xCB5A - (idx))
-#define PHY_C20_B_MPLLB_CNTX_CFG(idx)	(0xCB4E - (idx))
+
+#define PHY_C20_A_MPLLB_CNTX_CFG(i915, idx) \
+		((_IS_XE2HPD_C20(i915) ? _XE2HPD_C20_A_MPLLB_CFG : _MTL_C20_A_MPLLB_CFG) - (idx))
+#define PHY_C20_B_MPLLB_CNTX_CFG(i915, idx) \
+		((_IS_XE2HPD_C20(i915) ? _XE2HPD_C20_B_MPLLB_CFG : _MTL_C20_B_MPLLB_CFG) - (idx))
+
 #define   C20_MPLLB_TX_CLK_DIV_MASK	REG_GENMASK(15, 13)
 #define   C20_MPLLB_FRACEN		REG_BIT(13)
 #define   C20_REF_CLK_MPLLB_DIV_MASK	REG_GENMASK(12, 10)
-- 
2.25.1




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