Commit 5756b155 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon: handle runtime pm in fbcon (v2) 



Ported from nouveau.

v2: re-enable runtime autosuspend in the error case

Acked-by: default avatarEdward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: default avatarMichel Dänzer <michel.daenzer@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 7c1fa1db

drivers/gpu/drm/radeon/radeon_fb.c

+28 −0
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ 
#include <linux/module.h>

#include <linux/slab.h>

#include <linux/fb.h>

#include <linux/pm_runtime.h>



#include <drm/drmP.h>

#include <drm/drm_crtc.h>
@@ -47,8 +48,35 @@ struct radeon_fbdev { 
	struct radeon_device *rdev;

};



static int

radeonfb_open(struct fb_info *info, int user)

{

	struct radeon_fbdev *rfbdev = info->par;

	struct radeon_device *rdev = rfbdev->rdev;

	int ret = pm_runtime_get_sync(rdev->ddev->dev);

	if (ret < 0 && ret != -EACCES) {

		pm_runtime_mark_last_busy(rdev->ddev->dev);

		pm_runtime_put_autosuspend(rdev->ddev->dev);

		return ret;

	}

	return 0;

}



static int

radeonfb_release(struct fb_info *info, int user)

{

	struct radeon_fbdev *rfbdev = info->par;

	struct radeon_device *rdev = rfbdev->rdev;



	pm_runtime_mark_last_busy(rdev->ddev->dev);

	pm_runtime_put_autosuspend(rdev->ddev->dev);

	return 0;

}



static struct fb_ops radeonfb_ops = {

	.owner = THIS_MODULE,

	.fb_open = radeonfb_open,

	.fb_release = radeonfb_release,

	.fb_check_var = drm_fb_helper_check_var,

	.fb_set_par = drm_fb_helper_set_par,

	.fb_fillrect = drm_fb_helper_cfb_fillrect,

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