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drm/i915/psr: Re-create a hsw_psr_enable_source.

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This sequence is part of enable source anyways, but they
only need to be executed once and not on every activation,
So let's re-create hsw_enable_source.

v2: Avoid changing order here to avoid changing behaviour
    as suggested by Jani.
v3: Rebased on top of commit d2419ffc10 ("drm/i915: Plumb
    crtc_state to PSR enable/disable")

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Vathsala Nagaraju <vathsala.nagaraju@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170907230041.22978-7-rodrigo.vivi@intel.com
This commit is contained in:
Rodrigo Vivi 2017-09-07 16:00:36 -07:00
parent 2ce4df87f1
commit 4d1fa22f43
1 changed files with 37 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

82
drivers/gpu/drm/i915/intel_psr.c
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@ -471,45 +471,15 @@ static void intel_psr_activate(struct intel_dp *intel_dp)
dev_priv->psr.active = true;
}
/**
* intel_psr_enable - Enable PSR
* @intel_dp: Intel DP
* @crtc_state: new CRTC state
*
* This function can only be called after the pipe is fully trained and enabled.
*/
void intel_psr_enable(struct intel_dp *intel_dp,
static void hsw_psr_enable_source(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state)
{
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
struct drm_device *dev = intel_dig_port->base.base.dev;
struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
struct drm_device *dev = dig_port->base.base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
u32 chicken;
if (!HAS_PSR(dev_priv))
return;
if (!is_edp_psr(intel_dp)) {
DRM_DEBUG_KMS("PSR not supported by this panel\n");
return;
}
mutex_lock(&dev_priv->psr.lock);
if (dev_priv->psr.enabled) {
DRM_DEBUG_KMS("PSR already in use\n");
goto unlock;
}
if (!intel_psr_match_conditions(intel_dp))
goto unlock;
dev_priv->psr.busy_frontbuffer_bits = 0;
if (HAS_DDI(dev_priv)) {
hsw_psr_setup_vsc(intel_dp, crtc_state);
if (dev_priv->psr.psr2_support) {
chicken = PSR2_VSC_ENABLE_PROG_HEADER;
if (dev_priv->psr.y_cord_support)
@ -535,6 +505,46 @@ void intel_psr_enable(struct intel_dp *intel_dp,
EDP_PSR_DEBUG_MASK_HPD |
EDP_PSR_DEBUG_MASK_LPSP);
}
}
/**
* intel_psr_enable - Enable PSR
* @intel_dp: Intel DP
* @crtc_state: new CRTC state
*
* This function can only be called after the pipe is fully trained and enabled.
*/
void intel_psr_enable(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state)
{
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
struct drm_device *dev = intel_dig_port->base.base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
if (!HAS_PSR(dev_priv))
return;
if (!is_edp_psr(intel_dp)) {
DRM_DEBUG_KMS("PSR not supported by this panel\n");
return;
}
mutex_lock(&dev_priv->psr.lock);
if (dev_priv->psr.enabled) {
DRM_DEBUG_KMS("PSR already in use\n");
goto unlock;
}
if (!intel_psr_match_conditions(intel_dp))
goto unlock;
dev_priv->psr.busy_frontbuffer_bits = 0;
if (HAS_DDI(dev_priv)) {
hsw_psr_setup_vsc(intel_dp, crtc_state);
hsw_psr_enable_source(intel_dp, crtc_state);
/* Enable PSR on the panel */
hsw_psr_enable_sink(intel_dp);
@ -547,12 +557,6 @@ void intel_psr_enable(struct intel_dp *intel_dp,
/* Enable PSR on the panel */
vlv_psr_enable_sink(intel_dp);
/* On HSW+ enable_source also means go to PSR entry/active
* state as soon as idle_frame achieved and here would be
* to soon. However on VLV enable_source just enable PSR
* but let it on inactive state. So we might do this prior
* to active transition, i.e. here.
*/
vlv_psr_enable_source(intel_dp, crtc_state);
}