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Commit b07a657e authored by Pali Rohár's avatar Pali Rohár Committed by Alex Deucher
Browse files

drm/radeon: Add ability to get and change dpm state when radeon PX card is turned off 

This fixing commit 4f2f2039

bug:
https://bugzilla.kernel.org/show_bug.cgi?id=76321



Signed-off-by: default avatarPali Rohár <pali.rohar@gmail.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent 6bce8d97

drivers/gpu/drm/radeon/radeon_pm.c

+6 −10
Original line number Diff line number Diff line
@@ -460,10 +460,6 @@ static ssize_t radeon_get_dpm_state(struct device *dev, 
	struct radeon_device *rdev = ddev->dev_private;

	enum radeon_pm_state_type pm = rdev->pm.dpm.user_state;



	if  ((rdev->flags & RADEON_IS_PX) &&

	     (ddev->switch_power_state != DRM_SWITCH_POWER_ON))

		return snprintf(buf, PAGE_SIZE, "off\n");



	return snprintf(buf, PAGE_SIZE, "%s\n",

			(pm == POWER_STATE_TYPE_BATTERY) ? "battery" :

			(pm == POWER_STATE_TYPE_BALANCED) ? "balanced" : "performance");
@@ -477,11 +473,6 @@ static ssize_t radeon_set_dpm_state(struct device *dev, 
	struct drm_device *ddev = dev_get_drvdata(dev);

	struct radeon_device *rdev = ddev->dev_private;



	/* Can't set dpm state when the card is off */

	if  ((rdev->flags & RADEON_IS_PX) &&

	     (ddev->switch_power_state != DRM_SWITCH_POWER_ON))

		return -EINVAL;



	mutex_lock(&rdev->pm.mutex);

	if (strncmp("battery", buf, strlen("battery")) == 0)

		rdev->pm.dpm.user_state = POWER_STATE_TYPE_BATTERY;
@@ -495,7 +486,12 @@ static ssize_t radeon_set_dpm_state(struct device *dev, 
		goto fail;

	}

	mutex_unlock(&rdev->pm.mutex);



	/* Can't set dpm state when the card is off */

	if (!(rdev->flags & RADEON_IS_PX) ||

	    (ddev->switch_power_state == DRM_SWITCH_POWER_ON))

		radeon_pm_compute_clocks(rdev);



fail:

	return count;

}