From 956aee8fa366cfd9d693aa6e7ef822b775980c01 Mon Sep 17 00:00:00 2001
From: Lee Shawn C <shawn.c.lee@intel.com>
Date: Tue, 17 Nov 2020 22:26:29 +0800
Subject: [PATCH] drm/i915/rkl: new rkl ddc map for different PCH
Git-commit: 956aee8fa366cfd9d693aa6e7ef822b775980c01
Patch-mainline: v5.12-rc1
References: bsc#1188700
After boot into kernel. Driver configured ddc pin mapping based on
predefined table in parse_ddi_port(). Now driver configure rkl
ddc pin mapping depends on icp_ddc_pin_map[]. Then this table will
give incorrect gmbus port number to cause HDMI can't work.
Refer to commit cd0a89527d06 ("drm/i915/rkl: Add DDC pin mapping").
Create two ddc pin table for rkl TGP and CMP pch. Then HDMI can
works properly on rkl.
V2: update patch based on latest dinq branch.
V3: update ddc table for RKL+TGP sku. RKL+CNP sku will load cnp_ddc_pin_map[] setting.
V4: modify the if/else judgment to avoid nesting.
V5: fix typo in v4.
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Aditya Swarup <aditya.swarup@intel.com>
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Cooper Chiou <cooper.chiou@intel.com>
Cc: Khaled Almahallawy <khaled.almahallawy@intel.com>
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/2577
Signed-off-by: Lee Shawn C <shawn.c.lee@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201117142629.28729-1-shawn.c.lee@intel.com
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/i915/display/intel_bios.c | 10 ++++++++++
drivers/gpu/drm/i915/display/intel_vbt_defs.h | 2 ++
2 files changed, 12 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index 06c3310446a2..987cf509337f 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -1623,6 +1623,13 @@ static const u8 icp_ddc_pin_map[] = {
[TGL_DDC_BUS_PORT_6] = GMBUS_PIN_14_TC6_TGP,
};
+static const u8 rkl_pch_tgp_ddc_pin_map[] = {
+ [ICL_DDC_BUS_DDI_A] = GMBUS_PIN_1_BXT,
+ [ICL_DDC_BUS_DDI_B] = GMBUS_PIN_2_BXT,
+ [RKL_DDC_BUS_DDI_D] = GMBUS_PIN_9_TC1_ICP,
+ [RKL_DDC_BUS_DDI_E] = GMBUS_PIN_10_TC2_ICP,
+};
+
static u8 map_ddc_pin(struct drm_i915_private *dev_priv, u8 vbt_pin)
{
const u8 *ddc_pin_map;
@@ -1630,6 +1637,9 @@ static u8 map_ddc_pin(struct drm_i915_private *dev_priv, u8 vbt_pin)
if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1) {
return vbt_pin;
+ } else if (IS_ROCKETLAKE(dev_priv) && INTEL_PCH_TYPE(dev_priv) == PCH_TGP) {
+ ddc_pin_map = rkl_pch_tgp_ddc_pin_map;
+ n_entries = ARRAY_SIZE(rkl_pch_tgp_ddc_pin_map);
} else if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP) {
ddc_pin_map = icp_ddc_pin_map;
n_entries = ARRAY_SIZE(icp_ddc_pin_map);
diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
index 49b4b5fca941..187ec573de59 100644
--- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h
+++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
@@ -319,6 +319,8 @@ enum vbt_gmbus_ddi {
ICL_DDC_BUS_DDI_A = 0x1,
ICL_DDC_BUS_DDI_B,
TGL_DDC_BUS_DDI_C,
+ RKL_DDC_BUS_DDI_D = 0x3,
+ RKL_DDC_BUS_DDI_E,
ICL_DDC_BUS_PORT_1 = 0x4,
ICL_DDC_BUS_PORT_2,
ICL_DDC_BUS_PORT_3,
--
2.26.2