Commit 6765625e authored by Ville Syrjälä's avatar Ville Syrjälä Committed by Daniel Vetter
Browse files

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



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

v2: Split the i915_request change to another patch

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: default avatarPaulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 9cdb826c

drivers/gpu/drm/i915/intel_drv.h

+4 −0
Original line number Diff line number Diff line
@@ -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);

drivers/gpu/drm/i915/intel_pm.c

+63 −0
Original line number Diff line number Diff line
@@ -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 */

CRA Git | Maintained and supported by SUSTech CRA and CCSE