Initial attempt to convert rockchip to drm_of_component_probe() missed the difference between ports and encoders when using the compare_of() function. Now that drm_of_component_probe() has been enhanced, let's try again the conversion.
Signed-off-by: Liviu Dudau Liviu.Dudau@arm.com --- drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 98 ++++++----------------------- 1 file changed, 18 insertions(+), 80 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c index f22e1e1..574324e 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c @@ -19,6 +19,7 @@ #include <drm/drmP.h> #include <drm/drm_crtc_helper.h> #include <drm/drm_fb_helper.h> +#include <drm/drm_of.h> #include <linux/dma-mapping.h> #include <linux/pm_runtime.h> #include <linux/module.h> @@ -411,36 +412,6 @@ int rockchip_drm_encoder_get_mux_id(struct device_node *node, } EXPORT_SYMBOL_GPL(rockchip_drm_encoder_get_mux_id);
-static int compare_of(struct device *dev, void *data) -{ - struct device_node *np = data; - - return dev->of_node == np; -} - -static void rockchip_add_endpoints(struct device *dev, - struct component_match **match, - struct device_node *port) -{ - struct device_node *ep, *remote; - - for_each_child_of_node(port, ep) { - remote = of_graph_get_remote_port_parent(ep); - if (!remote || !of_device_is_available(remote)) { - of_node_put(remote); - continue; - } else if (!of_device_is_available(remote->parent)) { - dev_warn(dev, "parent device of %s is not available\n", - remote->full_name); - of_node_put(remote); - continue; - } - - component_match_add(dev, match, compare_of, remote); - of_node_put(remote); - } -} - static int rockchip_drm_bind(struct device *dev) { struct drm_device *drm; @@ -481,63 +452,30 @@ static const struct component_master_ops rockchip_drm_ops = { .unbind = rockchip_drm_unbind, };
-static int rockchip_drm_platform_probe(struct platform_device *pdev) +static int compare_port(struct device *dev, void *data) { - struct device *dev = &pdev->dev; - struct component_match *match = NULL; - struct device_node *np = dev->of_node; - struct device_node *port; - int i; + struct device_node *np = data;
- if (!np) - return -ENODEV; - /* - * Bind the crtc ports first, so that - * drm_of_find_possible_crtcs called from encoder .bind callbacks - * works as expected. - */ - for (i = 0;; i++) { - port = of_parse_phandle(np, "ports", i); - if (!port) - break; - - if (!of_device_is_available(port->parent)) { - of_node_put(port); - continue; - } + return dev->of_node == np->parent; +}
- component_match_add(dev, &match, compare_of, port->parent); - of_node_put(port); - } +static int compare_encoder(struct device *dev, void *data) +{ + struct device_node *np = data;
- if (i == 0) { - dev_err(dev, "missing 'ports' property\n"); - return -ENODEV; - } + return dev->of_node == np; +}
- if (!match) { - dev_err(dev, "No available vop found for display-subsystem.\n"); - return -ENODEV; - } - /* - * For each bound crtc, bind the encoders attached to its - * remote endpoint. - */ - for (i = 0;; i++) { - port = of_parse_phandle(np, "ports", i); - if (!port) - break; - - if (!of_device_is_available(port->parent)) { - of_node_put(port); - continue; - } +static int rockchip_drm_platform_probe(struct platform_device *pdev) +{ + int ret = drm_of_component_probe(&pdev->dev, compare_port, + compare_encoder, &rockchip_drm_ops);
- rockchip_add_endpoints(dev, &match, port); - of_node_put(port); - } + /* keep compatibility with old code that was returning -ENODEV */ + if (ret == -EINVAL) + return -ENODEV;
- return component_master_add_with_match(dev, &rockchip_drm_ops, match); + return ret; }
static int rockchip_drm_platform_remove(struct platform_device *pdev)