From 3d739d92d9cbce6cdaf101fe78870f97fcbf5349 Mon Sep 17 00:00:00 2001
From: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Date: Thu, 11 Jul 2013 18:45:01 -0300
Subject: [PATCH] drm/i915: add update function to disable/enable-back PSR
Required function to disable PSR when going to console mode.
But also can be used whenever PSR mode entry conditions changed.
v2: Add it before PSR Hook. Update function not really been called yet.
v3: Fix coding style detected by checkpatch by Paulo Zanoni.
v4: do_enable must be static as Paulo noticed.
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>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
drivers/gpu/drm/i915/intel_dp.c | 31 ++++++++++++++++++++++++++++++-
drivers/gpu/drm/i915/intel_drv.h | 1 +
2 files changed, 31 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 6a4cdea76274..2183b6f57a22 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1562,7 +1562,7 @@ static bool intel_edp_psr_match_conditions(struct intel_dp *intel_dp)
return true;
}
-void intel_edp_psr_enable(struct intel_dp *intel_dp)
+static void intel_edp_psr_do_enable(struct intel_dp *intel_dp)
{
struct drm_device *dev = intel_dp_to_dev(intel_dp);
@@ -1580,6 +1580,15 @@ void intel_edp_psr_enable(struct intel_dp *intel_dp)
intel_edp_psr_enable_source(intel_dp);
}
+void intel_edp_psr_enable(struct intel_dp *intel_dp)
+{
+ struct drm_device *dev = intel_dp_to_dev(intel_dp);
+
+ if (intel_edp_psr_match_conditions(intel_dp) &&
+ !intel_edp_is_psr_enabled(dev))
+ intel_edp_psr_do_enable(intel_dp);
+}
+
void intel_edp_psr_disable(struct intel_dp *intel_dp)
{
struct drm_device *dev = intel_dp_to_dev(intel_dp);
@@ -1596,6 +1605,26 @@ void intel_edp_psr_disable(struct intel_dp *intel_dp)
DRM_ERROR("Timed out waiting for PSR Idle State\n");
}
+void intel_edp_psr_update(struct drm_device *dev)
+{
+ struct intel_encoder *encoder;
+ struct intel_dp *intel_dp = NULL;
+
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head)
+ if (encoder->type == INTEL_OUTPUT_EDP) {
+ intel_dp = enc_to_intel_dp(&encoder->base);
+
+ if (!is_edp_psr(intel_dp))
+ return;
+
+ if (!intel_edp_psr_match_conditions(intel_dp))
+ intel_edp_psr_disable(intel_dp);
+ else
+ if (!intel_edp_is_psr_enabled(dev))
+ intel_edp_psr_do_enable(intel_dp);
+ }
+}
+
static void intel_disable_dp(struct intel_encoder *encoder)
{
struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index ff36a40103eb..40e955d00b2b 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -837,5 +837,6 @@ extern bool intel_set_pch_fifo_underrun_reporting(struct drm_device *dev,
extern void intel_edp_psr_enable(struct intel_dp *intel_dp);
extern void intel_edp_psr_disable(struct intel_dp *intel_dp);
+extern void intel_edp_psr_update(struct drm_device *dev);
#endif /* __INTEL_DRV_H__ */
--
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