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drm/i915/lnl: Add gmbus/ddc support

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LNL's south display uses the same table as MTP. Check for LNL's fake PCH
to make it consistent with the other checks.

The VBT table doesn't contain the VBT -> spec mapping for LNL. Like in
other cases, uses the same as the previous platform.

Bspec: 68971, 20124
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230919192128.2045154-18-lucas.demarchi@intel.com
This commit is contained in:
Lucas De Marchi
2023-09-19 12:21:24 -07:00
parent f96fdcd2f4
commit 9d404dad0b
2 changed files with 6 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/i915/display/intel_bios.c
View File

@@ -2194,7 +2194,8 @@ static u8 map_ddc_pin(struct drm_i915_private *i915, u8 vbt_pin)
const u8 *ddc_pin_map;
int i, n_entries;
if (HAS_PCH_MTP(i915) || IS_ALDERLAKE_P(i915)) {
if (INTEL_PCH_TYPE(i915) >= PCH_LNL || HAS_PCH_MTP(i915) ||
IS_ALDERLAKE_P(i915)) {
ddc_pin_map = adlp_ddc_pin_map;
n_entries = ARRAY_SIZE(adlp_ddc_pin_map);
} else if (IS_ALDERLAKE_S(i915)) {

5
drivers/gpu/drm/i915/display/intel_gmbus.c
View File

@@ -155,7 +155,10 @@ static const struct gmbus_pin *get_gmbus_pin(struct drm_i915_private *i915,
const struct gmbus_pin *pins;
size_t size;
if (INTEL_PCH_TYPE(i915) >= PCH_DG2) {
if (INTEL_PCH_TYPE(i915) >= PCH_LNL) {
pins = gmbus_pins_mtp;
size = ARRAY_SIZE(gmbus_pins_mtp);
} else if (INTEL_PCH_TYPE(i915) >= PCH_DG2) {
pins = gmbus_pins_dg2;
size = ARRAY_SIZE(gmbus_pins_dg2);
} else if (INTEL_PCH_TYPE(i915) >= PCH_DG1) {