From: Heiko Stuebner heiko@sntech.de
To be able to have both internal subdrivers and external bridge drivers as output endpoints of vops, add a function to be able to distinguish these.
Signed-off-by: Heiko Stuebner heiko@sntech.de --- drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 27 +++++++++++++++++++++++++++ drivers/gpu/drm/rockchip/rockchip_drm_drv.h | 1 + 2 files changed, 28 insertions(+)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c index 1d9c4a9..d18f7f8 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c @@ -24,6 +24,7 @@ #include <linux/pm_runtime.h> #include <linux/module.h> #include <linux/of_graph.h> +#include <linux/of_platform.h> #include <linux/component.h> #include <linux/console.h> #include <linux/iommu.h> @@ -267,6 +268,32 @@ static const struct dev_pm_ops rockchip_drm_pm_ops = { static struct platform_driver *rockchip_sub_drivers[MAX_ROCKCHIP_SUB_DRIVERS]; static int num_rockchip_sub_drivers;
+/* + * check if a vop output-endpoint is a subdriver or bridge. + */ +bool rockchip_drm_endpoint_is_subdriver(struct device_node *ep) +{ + struct device_node *node = of_graph_get_remote_port_parent(ep); + struct platform_device *pdev; + int i; + + if (!node) + return false; + + pdev = of_find_device_by_node(node); + if (!pdev) + return false; + + for (i = 0; i < num_rockchip_sub_drivers; i++) { + struct device_driver *drv = pdev->dev.driver; + + if (rockchip_sub_drivers[i] == to_platform_driver(drv)) + return true; + } + + return false; +} + static int compare_dev(struct device *dev, void *data) { return dev == (struct device *)data; diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h index d67ad0a..305b485 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h @@ -64,6 +64,7 @@ void rockchip_drm_dma_detach_device(struct drm_device *drm_dev, struct device *dev); int rockchip_drm_wait_vact_end(struct drm_crtc *crtc, unsigned int mstimeout);
+bool rockchip_drm_endpoint_is_subdriver(struct device_node *ep); extern struct platform_driver cdn_dp_driver; extern struct platform_driver dw_hdmi_rockchip_pltfm_driver; extern struct platform_driver dw_mipi_dsi_driver;