drm/i915: Match all PSR mode entry conditions before enabling it.
v2: Prefer seq_puts to seq_printf by Paulo Zanoni.
v3: small changes like avoiding calling dp_to_dig_port twice as noticed by
Paulo Zanoni.
v4: Avoiding reading non-existent registers - noticed by Paulo
on first psr debugfs patch.
v5: Accepting more suggestions from Paulo:
* check sw interlace flag instead of i915_read
* introduce PSR_S3D_ENABLED to avoid forgeting it whenever added.
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Shobhit Kumar <shobhit.kumar@intel.com>
[danvet: Fix up debugfs output (spotted by Paulo) and rip out the
power well check since we really can't do that in a race-free manner,
so it's bogus.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index bd1b95e..21d55f8 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -593,6 +593,17 @@
} no_fbc_reason;
};
+enum no_psr_reason {
+ PSR_NO_SOURCE, /* Not supported on platform */
+ PSR_NO_SINK, /* Not supported by panel */
+ PSR_CRTC_NOT_ACTIVE,
+ PSR_PWR_WELL_ENABLED,
+ PSR_NOT_TILED,
+ PSR_SPRITE_ENABLED,
+ PSR_S3D_ENABLED,
+ PSR_INTERLACED_ENABLED,
+ PSR_HSW_NOT_DDIA,
+};
enum intel_pch {
PCH_NONE = 0, /* No PCH present */
@@ -1173,6 +1184,8 @@
/* Haswell power well */
struct i915_power_well power_well;
+ enum no_psr_reason no_psr_reason;
+
struct i915_gpu_error gpu_error;
struct drm_i915_gem_object *vlv_pctx;