diff options
Diffstat (limited to 'drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c')
| -rw-r--r-- | drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c index 7320a6c6613f..01afeafe17b1 100644 --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c @@ -222,6 +222,8 @@ static void atmel_hlcdc_fb_output_poll_changed(struct drm_device *dev) static const struct drm_mode_config_funcs mode_config_funcs = { .fb_create = atmel_hlcdc_fb_create, .output_poll_changed = atmel_hlcdc_fb_output_poll_changed, + .atomic_check = drm_atomic_helper_check, + .atomic_commit = drm_atomic_helper_commit, }; static int atmel_hlcdc_dc_modeset_init(struct drm_device *dev) @@ -319,6 +321,8 @@ static int atmel_hlcdc_dc_load(struct drm_device *dev) goto err_periph_clk_disable; } + drm_mode_config_reset(dev); + ret = drm_vblank_init(dev, 1); if (ret < 0) { dev_err(dev->dev, "failed to initialize vblank\n"); @@ -557,6 +561,52 @@ static int atmel_hlcdc_dc_drm_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM +static int atmel_hlcdc_dc_drm_suspend(struct device *dev) +{ + struct drm_device *drm_dev = dev_get_drvdata(dev); + struct drm_crtc *crtc; + + if (pm_runtime_suspended(dev)) + return 0; + + drm_modeset_lock_all(drm_dev); + list_for_each_entry(crtc, &drm_dev->mode_config.crtc_list, head) { + struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; + if (crtc->enabled) { + crtc_funcs->disable(crtc); + /* save enable state for resume */ + crtc->enabled = true; + } + } + drm_modeset_unlock_all(drm_dev); + return 0; +} + +static int atmel_hlcdc_dc_drm_resume(struct device *dev) +{ + struct drm_device *drm_dev = dev_get_drvdata(dev); + struct drm_crtc *crtc; + + if (pm_runtime_suspended(dev)) + return 0; + + drm_modeset_lock_all(drm_dev); + list_for_each_entry(crtc, &drm_dev->mode_config.crtc_list, head) { + struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; + if (crtc->enabled) { + crtc->enabled = false; + crtc_funcs->enable(crtc); + } + } + drm_modeset_unlock_all(drm_dev); + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(atmel_hlcdc_dc_drm_pm_ops, + atmel_hlcdc_dc_drm_suspend, atmel_hlcdc_dc_drm_resume); + static const struct of_device_id atmel_hlcdc_dc_of_match[] = { { .compatible = "atmel,hlcdc-display-controller" }, { }, @@ -567,6 +617,7 @@ static struct platform_driver atmel_hlcdc_dc_platform_driver = { .remove = atmel_hlcdc_dc_drm_remove, .driver = { .name = "atmel-hlcdc-display-controller", + .pm = &atmel_hlcdc_dc_drm_pm_ops, .of_match_table = atmel_hlcdc_dc_of_match, }, }; |