Add cma Fbdev, Fbdev is legency and optional, you can enable/disable it by configuring DRM_FBDEV_EMULATION. Add hotplug.
Signed-off-by: Xinliang Liu xinliang.liu@linaro.org Signed-off-by: Xinwei Kong kong.kongxinwei@hisilicon.com Signed-off-by: Andy Green andy.green@linaro.org --- drivers/gpu/drm/hisilicon/hisi_drm_drv.c | 34 ++++++++++++++++++++++++++++++++ drivers/gpu/drm/hisilicon/hisi_drm_drv.h | 3 +++ 2 files changed, 37 insertions(+)
diff --git a/drivers/gpu/drm/hisilicon/hisi_drm_drv.c b/drivers/gpu/drm/hisilicon/hisi_drm_drv.c index 13f59aa..76eb711 100644 --- a/drivers/gpu/drm/hisilicon/hisi_drm_drv.c +++ b/drivers/gpu/drm/hisilicon/hisi_drm_drv.c @@ -20,6 +20,7 @@ #include <drm/drm_gem_cma_helper.h> #include <drm/drm_fb_cma_helper.h> #include <drm/drm_atomic_helper.h> +#include <drm/drm_crtc_helper.h>
#include "hisi_drm_ade.h" #include "hisi_drm_drv.h" @@ -30,6 +31,13 @@ static int hisi_drm_unload(struct drm_device *dev) { struct hisi_drm_private *priv = dev->dev_private;
+#ifdef CONFIG_DRM_FBDEV_EMULATION + if (priv->fbdev) { + drm_fbdev_cma_fini(priv->fbdev); + priv->fbdev = NULL; + } +#endif + drm_kms_helper_poll_fini(dev); drm_vblank_cleanup(dev); drm_mode_config_cleanup(dev); devm_kfree(dev->dev, priv); @@ -38,8 +46,28 @@ static int hisi_drm_unload(struct drm_device *dev) return 0; }
+#ifdef CONFIG_DRM_FBDEV_EMULATION +static void hisi_fbdev_output_poll_changed(struct drm_device *dev) +{ + struct hisi_drm_private *priv = dev->dev_private; + + if (priv->fbdev) { + drm_fbdev_cma_hotplug_event(priv->fbdev); + } else { + priv->fbdev = drm_fbdev_cma_init(dev, 32, + dev->mode_config.num_crtc, + dev->mode_config.num_connector); + if (IS_ERR(priv->fbdev)) + priv->fbdev = NULL; + } +} +#endif + static const struct drm_mode_config_funcs hisi_drm_mode_config_funcs = { .fb_create = drm_fb_cma_create, +#ifdef CONFIG_DRM_FBDEV_EMULATION + .output_poll_changed = hisi_fbdev_output_poll_changed, +#endif .atomic_check = drm_atomic_helper_check, .atomic_commit = drm_atomic_helper_commit, }; @@ -90,6 +118,12 @@ static int hisi_drm_load(struct drm_device *dev, unsigned long flags) /* reset all the states of crtc/plane/encoder/connector */ drm_mode_config_reset(dev);
+ /* init kms poll for handling hpd */ + drm_kms_helper_poll_init(dev); + + /* force detection after connectors init */ + (void)drm_helper_hpd_irq_event(dev); + return 0;
err_unbind_all: diff --git a/drivers/gpu/drm/hisilicon/hisi_drm_drv.h b/drivers/gpu/drm/hisilicon/hisi_drm_drv.h index a10229e..984121f 100644 --- a/drivers/gpu/drm/hisilicon/hisi_drm_drv.h +++ b/drivers/gpu/drm/hisilicon/hisi_drm_drv.h @@ -11,6 +11,9 @@ #define __HISI_DRM_DRV_H__
struct hisi_drm_private { +#ifdef CONFIG_DRM_FBDEV_EMULATION + struct drm_fbdev_cma *fbdev; +#endif };
#endif /* __HISI_DRM_DRV_H__ */