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drm/i915: Add intel_display_power_{get, put} to request power for specific domains

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Add APIs to get/put power well references for specific purposes.

v2: Split the i915_request change to another patch

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2013-09-16 17:38:28 +03:00 committed by Daniel Vetter
parent 9cdb826c14
commit 6765625e0b
2 changed files with 67 additions and 0 deletions
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4
drivers/gpu/drm/i915/intel_drv.h
View File

@ -762,6 +762,10 @@ extern void i915_remove_power_well(struct drm_device *dev);
extern bool intel_display_power_enabled(struct drm_device *dev,
enum intel_display_power_domain domain);
extern void intel_display_power_get(struct drm_device *dev,
enum intel_display_power_domain domain);
extern void intel_display_power_put(struct drm_device *dev,
enum intel_display_power_domain domain);
extern void intel_init_power_well(struct drm_device *dev);
extern void intel_set_power_well(struct drm_device *dev, bool enable);
extern void intel_resume_power_well(struct drm_device *dev);

63
drivers/gpu/drm/i915/intel_pm.c
View File

@ -5345,6 +5345,69 @@ static void __intel_set_power_well(struct drm_device *dev, bool enable)
}
}
void intel_display_power_get(struct drm_device *dev,
enum intel_display_power_domain domain)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct i915_power_well *power_well = &dev_priv->power_well;
if (!HAS_POWER_WELL(dev))
return;
switch (domain) {
case POWER_DOMAIN_PIPE_A:
case POWER_DOMAIN_TRANSCODER_EDP:
return;
case POWER_DOMAIN_PIPE_B:
case POWER_DOMAIN_PIPE_C:
case POWER_DOMAIN_PIPE_A_PANEL_FITTER:
case POWER_DOMAIN_PIPE_B_PANEL_FITTER:
case POWER_DOMAIN_PIPE_C_PANEL_FITTER:
case POWER_DOMAIN_TRANSCODER_A:
case POWER_DOMAIN_TRANSCODER_B:
case POWER_DOMAIN_TRANSCODER_C:
spin_lock_irq(&power_well->lock);
if (!power_well->count++)
__intel_set_power_well(power_well->device, true);
spin_unlock_irq(&power_well->lock);
return;
default:
BUG();
}
}
void intel_display_power_put(struct drm_device *dev,
enum intel_display_power_domain domain)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct i915_power_well *power_well = &dev_priv->power_well;
if (!HAS_POWER_WELL(dev))
return;
switch (domain) {
case POWER_DOMAIN_PIPE_A:
case POWER_DOMAIN_TRANSCODER_EDP:
return;
case POWER_DOMAIN_PIPE_B:
case POWER_DOMAIN_PIPE_C:
case POWER_DOMAIN_PIPE_A_PANEL_FITTER:
case POWER_DOMAIN_PIPE_B_PANEL_FITTER:
case POWER_DOMAIN_PIPE_C_PANEL_FITTER:
case POWER_DOMAIN_TRANSCODER_A:
case POWER_DOMAIN_TRANSCODER_B:
case POWER_DOMAIN_TRANSCODER_C:
spin_lock_irq(&power_well->lock);
WARN_ON(!power_well->count);
if (!--power_well->count)
__intel_set_power_well(power_well->device, false);
spin_unlock_irq(&power_well->lock);
return;
default:
BUG();
}
}
static struct i915_power_well *hsw_pwr;
/* Display audio driver power well request */