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 --- drivers/gpu/drm/bochs/bochs.h | 1 + drivers/gpu/drm/bochs/bochs_drv.c | 44 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 45 insertions(+)
diff --git a/drivers/gpu/drm/bochs/bochs.h b/drivers/gpu/drm/bochs/bochs.h index 741965c..4608205 100644 --- a/drivers/gpu/drm/bochs/bochs.h +++ b/drivers/gpu/drm/bochs/bochs.h @@ -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> diff --git a/drivers/gpu/drm/bochs/bochs_drv.c b/drivers/gpu/drm/bochs/bochs_drv.c index 395bba2..9c13df2 100644 --- a/drivers/gpu/drm/bochs/bochs_drv.c +++ b/drivers/gpu/drm/bochs/bochs_drv.c @@ -95,6 +95,49 @@ static struct drm_driver bochs_driver = { };
/* ---------------------------------------------------------------------- */ +/* 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 */
static int bochs_kick_out_firmware_fb(struct pci_dev *pdev) @@ -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, };
/* ---------------------------------------------------------------------- */