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drm/i915/dg2: Add fake PCH

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As with DG1, DG2 has an ICL-style south display interface provided on
the same PCI device.  Add a fake PCH to ensure DG2 takes the appropriate
codepaths for south display handling.

Bspec: 54871, 50062, 49961, 53673
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Aditya Swarup <aditya.swarup@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210721223043.834562-11-matthew.d.roper@intel.com
This commit is contained in:
Matt Roper 2021-07-21 15:30:35 -07:00
parent 22e26af769
commit 3176fb663c
3 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/i915/i915_irq.c
View File

@ -207,7 +207,7 @@ static void intel_hpd_init_pins(struct drm_i915_private *dev_priv)
(!HAS_PCH_SPLIT(dev_priv) || HAS_PCH_NOP(dev_priv)))
return;
if (HAS_PCH_DG1(dev_priv))
if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1)
hpd->pch_hpd = hpd_sde_dg1;
else if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
hpd->pch_hpd = hpd_icp;

3
drivers/gpu/drm/i915/intel_pch.c
View File

@ -211,6 +211,9 @@ void intel_detect_pch(struct drm_i915_private *dev_priv)
if (IS_DG1(dev_priv)) {
dev_priv->pch_type = PCH_DG1;
return;
} else if (IS_DG2(dev_priv)) {
dev_priv->pch_type = PCH_DG2;
return;
}
/*

2
drivers/gpu/drm/i915/intel_pch.h
View File

@ -30,6 +30,7 @@ enum intel_pch {
/* Fake PCHs, functionality handled on the same PCI dev */
PCH_DG1 = 1024,
PCH_DG2,
};
#define INTEL_PCH_DEVICE_ID_MASK 0xff80
@ -62,6 +63,7 @@ enum intel_pch {
#define INTEL_PCH_TYPE(dev_priv) ((dev_priv)->pch_type)
#define INTEL_PCH_ID(dev_priv) ((dev_priv)->pch_id)
#define HAS_PCH_DG2(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_DG2)
#define HAS_PCH_ADP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_ADP)
#define HAS_PCH_DG1(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_DG1)
#define HAS_PCH_JSP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_JSP)