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drm/i915/psr: Check if VBT says PSR can be enabled.

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Driver features data block has a boolean flag for PSR, use this to decide
whether PSR should be enabled on a platform. The module parameter can
still be used to override this.

Note: The feature currently remains disabled by default for all platforms
irrespective of what VBT says.

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180509003524.3199-1-dhinakaran.pandiyan@intel.com
This commit is contained in:
Dhinakaran Pandiyan 2018-05-08 17:35:24 -07:00 committed by Rodrigo Vivi
parent 6486d84b1c
commit 2bdd045e3a
3 changed files with 7 additions and 2 deletions
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1
drivers/gpu/drm/i915/i915_drv.h
View File

@ -1073,6 +1073,7 @@ struct intel_vbt_data {
} edp;
struct {
bool enable;
bool full_link;
bool require_aux_wakeup;
int idle_frames;

1
drivers/gpu/drm/i915/intel_bios.c
View File

@ -530,6 +530,7 @@ parse_driver_features(struct drm_i915_private *dev_priv,
*/
if (!driver->drrs_enabled)
dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED;
dev_priv->vbt.psr.enable = driver->psr_enabled;
}
static void

7
drivers/gpu/drm/i915/intel_psr.c
View File

@ -1173,9 +1173,12 @@ void intel_psr_init(struct drm_i915_private *dev_priv)
if (!dev_priv->psr.sink_support)
return;
/* Per platform default: all disabled. */
if (i915_modparams.enable_psr == -1)
if (i915_modparams.enable_psr == -1) {
i915_modparams.enable_psr = dev_priv->vbt.psr.enable;
/* Per platform default: all disabled. */
i915_modparams.enable_psr = 0;
}
/* Set link_standby x link_off defaults */
if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))