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drm: bochs: add power management support

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bochs kms driver lacks power management support, thus
the vga display doesn't work any more after S3 resume.

Fix this by adding suspend and resume functions.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Gerd Hoffmann 2014-04-14 11:34:49 +02:00 committed by Dave Airlie
parent 2f1e800799
commit b8ccd70f13
2 changed files with 45 additions and 0 deletions
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1
drivers/gpu/drm/bochs/bochs.h
View File

@ -1,5 +1,6 @@
#include <linux/io.h>
#include <linux/fb.h>
#include <linux/console.h>
#include <drm/drmP.h>
#include <drm/drm_crtc.h>

44
drivers/gpu/drm/bochs/bochs_drv.c
View File

@ -94,6 +94,49 @@ static struct drm_driver bochs_driver = {
.dumb_destroy = drm_gem_dumb_destroy,
};
/* ---------------------------------------------------------------------- */
/* pm interface */
static int bochs_pm_suspend(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct drm_device *drm_dev = pci_get_drvdata(pdev);
struct bochs_device *bochs = drm_dev->dev_private;
drm_kms_helper_poll_disable(drm_dev);
if (bochs->fb.initialized) {
console_lock();
fb_set_suspend(bochs->fb.helper.fbdev, 1);
console_unlock();
}
return 0;
}
static int bochs_pm_resume(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct drm_device *drm_dev = pci_get_drvdata(pdev);
struct bochs_device *bochs = drm_dev->dev_private;
drm_helper_resume_force_mode(drm_dev);
if (bochs->fb.initialized) {
console_lock();
fb_set_suspend(bochs->fb.helper.fbdev, 0);
console_unlock();
}
drm_kms_helper_poll_enable(drm_dev);
return 0;
}
static const struct dev_pm_ops bochs_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(bochs_pm_suspend,
bochs_pm_resume)
};
/* ---------------------------------------------------------------------- */
/* pci interface */
@ -155,6 +198,7 @@ static struct pci_driver bochs_pci_driver = {
.id_table = bochs_pci_tbl,
.probe = bochs_pci_probe,
.remove = bochs_pci_remove,
.driver.pm = &bochs_pm_ops,
};
/* ---------------------------------------------------------------------- */