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drm/i915/adl_p: Add PCH support

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Add ADP-P PCH device ID and assign as ADL PCH if found. Previously we
would assign the DDC pin map based on the PCH, but it can also change
based on the CPU. From Bspec 20124: "The physical port to pin pair
mapping are defined in the Bspec per PCH. Mapping can further change
based on CPU Si used as CPU and PCH can be mixed and matched".

Bspec: 20124
Cc: Matt Atwood <matthew.s.atwood@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Clinton Taylor <Clinton.A.Taylor@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210512042144.2089071-7-matthew.d.roper@intel.com
This commit is contained in:
Clinton Taylor 2021-05-11 21:21:43 -07:00 committed by Matt Roper
parent 0e53fb847c
commit 83c81a0a16
4 changed files with 7 additions and 4 deletions
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2
drivers/gpu/drm/i915/display/intel_bios.c
View File

@ -1651,7 +1651,7 @@ static u8 map_ddc_pin(struct drm_i915_private *i915, u8 vbt_pin)
const u8 *ddc_pin_map;
int n_entries;
if (HAS_PCH_ADP(i915)) {
if (IS_ALDERLAKE_S(i915)) {
ddc_pin_map = adls_ddc_pin_map;
n_entries = ARRAY_SIZE(adls_ddc_pin_map);
} else if (INTEL_PCH_TYPE(i915) >= PCH_DG1) {

2
drivers/gpu/drm/i915/display/intel_hdmi.c
View File

@ -2748,7 +2748,7 @@ static u8 intel_hdmi_ddc_pin(struct intel_encoder *encoder)
return ddc_pin;
}
if (HAS_PCH_ADP(dev_priv))
if (IS_ALDERLAKE_S(dev_priv))
ddc_pin = adls_port_to_ddc_pin(dev_priv, port);
else if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1)
ddc_pin = dg1_port_to_ddc_pin(dev_priv, port);

6
drivers/gpu/drm/i915/intel_pch.c
View File

@ -130,8 +130,10 @@ intel_pch_type(const struct drm_i915_private *dev_priv, unsigned short id)
drm_WARN_ON(&dev_priv->drm, !IS_JSL_EHL(dev_priv));
return PCH_JSP;
case INTEL_PCH_ADP_DEVICE_ID_TYPE:
case INTEL_PCH_ADP2_DEVICE_ID_TYPE:
drm_dbg_kms(&dev_priv->drm, "Found Alder Lake PCH\n");
drm_WARN_ON(&dev_priv->drm, !IS_ALDERLAKE_S(dev_priv));
drm_WARN_ON(&dev_priv->drm, !IS_ALDERLAKE_S(dev_priv) &&
!IS_ALDERLAKE_P(dev_priv));
return PCH_ADP;
default:
return PCH_NONE;
@ -161,7 +163,7 @@ intel_virt_detect_pch(const struct drm_i915_private *dev_priv,
* make an educated guess as to which PCH is really there.
*/
if (IS_ALDERLAKE_S(dev_priv))
if (IS_ALDERLAKE_S(dev_priv) || IS_ALDERLAKE_P(dev_priv))
id = INTEL_PCH_ADP_DEVICE_ID_TYPE;
else if (IS_TIGERLAKE(dev_priv) || IS_ROCKETLAKE(dev_priv))
id = INTEL_PCH_TGP_DEVICE_ID_TYPE;

1
drivers/gpu/drm/i915/intel_pch.h
View File

@ -55,6 +55,7 @@ enum intel_pch {
#define INTEL_PCH_JSP_DEVICE_ID_TYPE 0x4D80
#define INTEL_PCH_JSP2_DEVICE_ID_TYPE 0x3880
#define INTEL_PCH_ADP_DEVICE_ID_TYPE 0x7A80
#define INTEL_PCH_ADP2_DEVICE_ID_TYPE 0x5180
#define INTEL_PCH_P2X_DEVICE_ID_TYPE 0x7100
#define INTEL_PCH_P3X_DEVICE_ID_TYPE 0x7000
#define INTEL_PCH_QEMU_DEVICE_ID_TYPE 0x2900 /* qemu q35 has 2918 */