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drm/i915/rkl: Disable PSR2 

RKL doesn't have PSR2 HW tracking, it was replaced by software/manual
tracking.  The driver is required to track the areas that needs update
and program hardware to send selective updates.

So until the software tracking is implemented, PSR2 needs to be disabled
for platforms without PSR2 HW tracking.

BSpec: 50422
BSpec: 50424

Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200603211529.3005059-15-matthew.d.roper@intel.com
This commit is contained in:
José Roberto de Souza 2020-06-03 14:15:28 -07:00 committed by Matt Roper
parent 562ddcb748
commit 24d2fc3d53
4 changed files with 21 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/gpu/drm/i915/display/intel_psr.c
View File

@ -646,6 +646,21 @@ static bool intel_psr2_config_valid(struct intel_dp *intel_dp,
return false;
}
/*
* Some platforms lack PSR2 HW tracking and instead require manual
* tracking by software. In this case, the driver is required to track
* the areas that need updates and program hardware to send selective
* updates.
*
* So until the software tracking is implemented, PSR2 needs to be
* disabled for platforms without PSR2 HW tracking.
*/
if (!HAS_PSR_HW_TRACKING(dev_priv)) {
drm_dbg_kms(&dev_priv->drm,
"No PSR2 HW tracking in the platform\n");
return false;
}
/*
* DSC and PSR2 cannot be enabled simultaneously. If a requested
* resolution requires DSC to be enabled, priority is given to DSC

2
drivers/gpu/drm/i915/i915_drv.h
View File

@ -1643,6 +1643,8 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
#define HAS_DDI(dev_priv) (INTEL_INFO(dev_priv)->display.has_ddi)
#define HAS_FPGA_DBG_UNCLAIMED(dev_priv) (INTEL_INFO(dev_priv)->has_fpga_dbg)
#define HAS_PSR(dev_priv) (INTEL_INFO(dev_priv)->display.has_psr)
#define HAS_PSR_HW_TRACKING(dev_priv) \
(INTEL_INFO(dev_priv)->display.has_psr_hw_tracking)
#define HAS_TRANSCODER(dev_priv, trans) ((INTEL_INFO(dev_priv)->cpu_transcoder_mask & BIT(trans)) != 0)
#define HAS_RC6(dev_priv) (INTEL_INFO(dev_priv)->has_rc6)

3
drivers/gpu/drm/i915/i915_pci.c
View File

@ -536,6 +536,7 @@ static const struct intel_device_info vlv_info = {
.display.has_ddi = 1, \
.has_fpga_dbg = 1, \
.display.has_psr = 1, \
.display.has_psr_hw_tracking = 1, \
.display.has_dp_mst = 1, \
.has_rc6p = 0 /* RC6p removed-by HSW */, \
HSW_PIPE_OFFSETS, \
@ -690,6 +691,7 @@ static const struct intel_device_info skl_gt4_info = {
.display.has_fbc = 1, \
.display.has_hdcp = 1, \
.display.has_psr = 1, \
.display.has_psr_hw_tracking = 1, \
.has_runtime_pm = 1, \
.display.has_csr = 1, \
.has_rc6 = 1, \
@ -884,6 +886,7 @@ static const struct intel_device_info rkl_info = {
.cpu_transcoder_mask = BIT(TRANSCODER_A) | BIT(TRANSCODER_B) |
BIT(TRANSCODER_C),
.require_force_probe = 1,
.display.has_psr_hw_tracking = 0,
.engine_mask =
BIT(RCS0) | BIT(BCS0) | BIT(VECS0) | BIT(VCS0),
};

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

@ -148,6 +148,7 @@ enum intel_ppgtt_type {
func(has_modular_fia); \
func(has_overlay); \
func(has_psr); \
func(has_psr_hw_tracking); \
func(overlay_needs_physical); \
func(supports_tv);