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drm/i915: Update power domains on readout.

Browse source 
This allows us to get rid of the set_init_power in
modeset_update_crtc_domains. The state should be sanitized enough
after setup_hw_state to not need the init power.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Maarten Lankhorst 2015-07-13 16:30:27 +02:00 committed by Daniel Vetter
parent ad3c558fb9
commit 292b990e86
1 changed files with 50 additions and 26 deletions
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76
drivers/gpu/drm/i915/intel_display.c
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@ -5196,6 +5196,9 @@ static unsigned long get_crtc_power_domains(struct drm_crtc *crtc)
unsigned long mask;
enum transcoder transcoder;
if (!crtc->state->active)
return 0;
transcoder = intel_pipe_to_cpu_transcoder(dev->dev_private, pipe);
mask = BIT(POWER_DOMAIN_PIPE(pipe));
@ -5210,27 +5213,46 @@ static unsigned long get_crtc_power_domains(struct drm_crtc *crtc)
return mask;
}
static unsigned long modeset_get_crtc_power_domains(struct drm_crtc *crtc)
{
struct drm_i915_private *dev_priv = crtc->dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum intel_display_power_domain domain;
unsigned long domains, new_domains, old_domains;
old_domains = intel_crtc->enabled_power_domains;
intel_crtc->enabled_power_domains = new_domains = get_crtc_power_domains(crtc);
domains = new_domains & ~old_domains;
for_each_power_domain(domain, domains)
intel_display_power_get(dev_priv, domain);
return old_domains & ~new_domains;
}
static void modeset_put_power_domains(struct drm_i915_private *dev_priv,
unsigned long domains)
{
enum intel_display_power_domain domain;
for_each_power_domain(domain, domains)
intel_display_power_put(dev_priv, domain);
}
static void modeset_update_crtc_power_domains(struct drm_atomic_state *state)
{
struct drm_device *dev = state->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
unsigned long pipe_domains[I915_MAX_PIPES] = { 0, };
struct intel_crtc *crtc;
unsigned long put_domains[I915_MAX_PIPES] = {};
struct drm_crtc_state *crtc_state;
struct drm_crtc *crtc;
int i;
/*
* First get all needed power domains, then put all unneeded, to avoid
* any unnecessary toggling of the power wells.
*/
for_each_intel_crtc(dev, crtc) {
enum intel_display_power_domain domain;
if (!crtc->base.state->enable)
continue;
pipe_domains[crtc->pipe] = get_crtc_power_domains(&crtc->base);
for_each_power_domain(domain, pipe_domains[crtc->pipe])
intel_display_power_get(dev_priv, domain);
for_each_crtc_in_state(state, crtc, crtc_state, i) {
if (needs_modeset(crtc->state))
put_domains[to_intel_crtc(crtc)->pipe] =
modeset_get_crtc_power_domains(crtc);
}
if (dev_priv->display.modeset_commit_cdclk) {
@ -5241,16 +5263,9 @@ static void modeset_update_crtc_power_domains(struct drm_atomic_state *state)
dev_priv->display.modeset_commit_cdclk(state);
}
for_each_intel_crtc(dev, crtc) {
enum intel_display_power_domain domain;
for_each_power_domain(domain, crtc->enabled_power_domains)
intel_display_power_put(dev_priv, domain);
crtc->enabled_power_domains = pipe_domains[crtc->pipe];
}
intel_display_set_init_power(dev_priv, false);
for (i = 0; i < I915_MAX_PIPES; i++)
if (put_domains[i])
modeset_put_power_domains(dev_priv, put_domains[i]);
}
static void intel_update_max_cdclk(struct drm_device *dev)
@ -15559,6 +15574,15 @@ intel_modeset_setup_hw_state(struct drm_device *dev)
skl_wm_get_hw_state(dev);
else if (HAS_PCH_SPLIT(dev))
ilk_wm_get_hw_state(dev);
for_each_intel_crtc(dev, crtc) {
unsigned long put_domains;
put_domains = modeset_get_crtc_power_domains(&crtc->base);
if (WARN_ON(put_domains))
modeset_put_power_domains(dev_priv, put_domains);
}
intel_display_set_init_power(dev_priv, false);
}
void intel_display_resume(struct drm_device *dev)