[PATCH v3 19/21] drm/i915/tgl: Add vbt value mapping for DDC Bus pin

[Lucas De Marchi <lucas.demarchi@intel.com>]

From: Mahesh Kumar <mahesh1.kumar@intel.com>

Add VBT-value to DDC bus pin mapping for the same.

Signed-off-by: Mahesh Kumar <mahesh1.kumar@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
---
 drivers/gpu/drm/i915/display/intel_bios.c     | 17 ++++++++++++++++-
 drivers/gpu/drm/i915/display/intel_vbt_defs.h |  3 +++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index 4fdbb5c35d87..2fe68f72b88f 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -1355,12 +1355,27 @@ static const u8 mcc_ddc_pin_map[] = {
 	[MCC_DDC_BUS_DDI_C] = GMBUS_PIN_9_TC1_ICP,
 };
 
+static const u8 tgp_ddc_pin_map[] = {
+	[ICL_DDC_BUS_DDI_A] = GMBUS_PIN_1_BXT,
+	[ICL_DDC_BUS_DDI_B] = GMBUS_PIN_2_BXT,
+	[TGL_DDC_BUS_DDI_C] = GMBUS_PIN_3_BXT,
+	[ICL_DDC_BUS_PORT_1] = GMBUS_PIN_9_TC1_ICP,
+	[ICL_DDC_BUS_PORT_2] = GMBUS_PIN_10_TC2_ICP,
+	[ICL_DDC_BUS_PORT_3] = GMBUS_PIN_11_TC3_ICP,
+	[ICL_DDC_BUS_PORT_4] = GMBUS_PIN_12_TC4_ICP,
+	[TGL_DDC_BUS_PORT_5] = GMBUS_PIN_13_TC5_TGP,
+	[TGL_DDC_BUS_PORT_6] = GMBUS_PIN_14_TC6_TGP,
+};
+
 static u8 map_ddc_pin(struct drm_i915_private *dev_priv, u8 vbt_pin)
 {
 	const u8 *ddc_pin_map;
 	int n_entries;
 
-	if (HAS_PCH_MCC(dev_priv)) {
+	if (HAS_PCH_TGP(dev_priv)) {
+		ddc_pin_map = tgp_ddc_pin_map;
+		n_entries = ARRAY_SIZE(tgp_ddc_pin_map);
+	} else if (HAS_PCH_MCC(dev_priv)) {
 		ddc_pin_map = mcc_ddc_pin_map;
 		n_entries = ARRAY_SIZE(mcc_ddc_pin_map);
 	} else if (HAS_PCH_ICP(dev_priv)) {
diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
index 2f4894e9a03d..93f5c9d204d6 100644
--- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h
+++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
@@ -310,10 +310,13 @@ enum vbt_gmbus_ddi {
 	DDC_BUS_DDI_F,
 	ICL_DDC_BUS_DDI_A = 0x1,
 	ICL_DDC_BUS_DDI_B,
+	TGL_DDC_BUS_DDI_C,
 	ICL_DDC_BUS_PORT_1 = 0x4,
 	ICL_DDC_BUS_PORT_2,
 	ICL_DDC_BUS_PORT_3,
 	ICL_DDC_BUS_PORT_4,
+	TGL_DDC_BUS_PORT_5,
+	TGL_DDC_BUS_PORT_6,
 	MCC_DDC_BUS_DDI_A = 0x1,
 	MCC_DDC_BUS_DDI_B,
 	MCC_DDC_BUS_DDI_C = 0x4,
-- 
2.21.0

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