diff options
| author |   Lucas De Marchi <lucas.demarchi@intel.com> | 2020-10-06 17:22:07 -0700 |
|---|---|---|
| committer | Lucas De Marchi <lucas.demarchi@intel.com> | 2020-10-07 13:51:21 -0700 |
| commit | fb7318c37afac6c6c7d18f893b3df962388cf763 (patch) | |
| tree | fed9e572e462bc8e43035458ae53a76138b2864f /drivers/gpu/drm/i915/display/intel_bios.c | |
| parent | drm/i915/dg1: Increase mmio size to 4MB (diff) | |
| download | linux-dev-fb7318c37afac6c6c7d18f893b3df962388cf763.tar.xz linux-dev-fb7318c37afac6c6c7d18f893b3df962388cf763.zip | |
drm/i915/dg1: gmbus pin mapping
Add tables to map the GMBUS pin pairs to GPIO registers and port to DDC.
From spec we have registers GPIO_CTL[1-4], so we should not do the 4->9
mapping as in ICL/TGL.
The values for VBT seem wrong in BSpec. For the current boards we
actually have a 1:1 mapping.
BSpec: 49311, 49945, 20124
Cc: Aditya Swarup <aditya.swarup@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201007002210.3678024-5-lucas.demarchi@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_bios.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_bios.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c index 4716484af62d..23bf21ee58ea 100644 --- a/drivers/gpu/drm/i915/display/intel_bios.c +++ b/drivers/gpu/drm/i915/display/intel_bios.c @@ -1602,7 +1602,9 @@ static u8 map_ddc_pin(struct drm_i915_private *dev_priv, u8 vbt_pin) const u8 *ddc_pin_map; int n_entries; - if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP) { + if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1) { + return vbt_pin; + } else if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP) { ddc_pin_map = icp_ddc_pin_map; n_entries = ARRAY_SIZE(icp_ddc_pin_map); } else if (HAS_PCH_CNP(dev_priv)) { |