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| author | Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> | 2017-09-15 17:42:06 +0100 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2017-12-04 13:04:11 +0200 |
| commit | 7912dee7775e4c7590c227b4163bdb635bc50dd6 (patch) | |
| tree | bb8ceb86cd8f00b9a0641b40918a46055e86c1f4 /drivers/gpu/drm/rcar-du/rcar_du_drv.c | |
| parent | e2f930aaa3519865bbdfa1a37d4974a717c1fa09 (diff) | |
| download | lwn-7912dee7775e4c7590c227b4163bdb635bc50dd6.tar.gz lwn-7912dee7775e4c7590c227b4163bdb635bc50dd6.zip | |
drm: rcar-du: Implement system suspend/resume support
To support system suspend operations we must ensure the hardware is
stopped, and resumed explicitly from the suspend and resume handlers.
Implement suspend and resume functions using the DRM atomic helper
functions.
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_drv.c')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_drv.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c index faa5b328986a..6e02c762a557 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c @@ -22,6 +22,7 @@ #include <linux/wait.h> #include <drm/drmP.h> +#include <drm/drm_atomic_helper.h> #include <drm/drm_crtc_helper.h> #include <drm/drm_fb_cma_helper.h> #include <drm/drm_gem_cma_helper.h> @@ -309,9 +310,19 @@ static struct drm_driver rcar_du_driver = { static int rcar_du_pm_suspend(struct device *dev) { struct rcar_du_device *rcdu = dev_get_drvdata(dev); + struct drm_atomic_state *state; drm_kms_helper_poll_disable(rcdu->ddev); - /* TODO Suspend the CRTC */ + drm_fbdev_cma_set_suspend_unlocked(rcdu->fbdev, true); + + state = drm_atomic_helper_suspend(rcdu->ddev); + if (IS_ERR(state)) { + drm_fbdev_cma_set_suspend_unlocked(rcdu->fbdev, false); + drm_kms_helper_poll_enable(rcdu->ddev); + return PTR_ERR(state); + } + + rcdu->suspend_state = state; return 0; } @@ -320,9 +331,10 @@ static int rcar_du_pm_resume(struct device *dev) { struct rcar_du_device *rcdu = dev_get_drvdata(dev); - /* TODO Resume the CRTC */ - + drm_atomic_helper_resume(rcdu->ddev, rcdu->suspend_state); + drm_fbdev_cma_set_suspend_unlocked(rcdu->fbdev, false); drm_kms_helper_poll_enable(rcdu->ddev); + return 0; } #endif |