drm: msm: update to use component match support

Update MSM's DRM driver to use the component match support rather than
add_components.

Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 9a5d87d..a322029 100644 (file)
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -905,12 +905,41 @@ static int compare_of(struct device *dev, void *data)
 {
        return dev->of_node == data;
 }
+#else
+static int compare_dev(struct device *dev, void *data)
+{
+       return dev == data;
+}
+#endif
+
+static int msm_drm_bind(struct device *dev)
+{
+       return drm_platform_init(&msm_driver, to_platform_device(dev));
+}
+
+static void msm_drm_unbind(struct device *dev)
+{
+       drm_put_dev(platform_get_drvdata(to_platform_device(dev)));
+}
+
+static const struct component_master_ops msm_drm_ops = {
+       .bind = msm_drm_bind,
+       .unbind = msm_drm_unbind,
+};
+
+/*
+ * Platform driver:
+ */
 
-static int msm_drm_add_components(struct device *master, struct master *m)
+static int msm_pdev_probe(struct platform_device *pdev)
 {
-       struct device_node *np = master->of_node;
+       struct component_match *match = NULL;
+#ifdef CONFIG_OF
+       /* NOTE: the CONFIG_OF case duplicates the same code as exynos or imx
+        * (or probably any other).. so probably some room for some helpers
+        */
+       struct device_node *np = pdev->dev.of_node;
        unsigned i;
-       int ret;
 
        for (i = 0; ; i++) {
                struct device_node *node;
@@ -919,22 +948,9 @@ static int msm_drm_add_components(struct device *master, struct master *m)
                if (!node)
                        break;
 
-               ret = component_master_add_child(m, compare_of, node);
-               of_node_put(node);
-
-               if (ret)
-                       return ret;
+               component_match_add(&pdev->dev, &match, compare_of, node);
        }
-       return 0;
-}
 #else
-static int compare_dev(struct device *dev, void *data)
-{
-       return dev == data;
-}
-
-static int msm_drm_add_components(struct device *master, struct master *m)
-{
        /* For non-DT case, it kinda sucks.  We don't actually have a way
         * to know whether or not we are waiting for certain devices (or if
         * they are simply not present).  But for non-DT we only need to
@@ -958,41 +974,12 @@ static int msm_drm_add_components(struct device *master, struct master *m)
                        return -EPROBE_DEFER;
                }
 
-               ret = component_master_add_child(m, compare_dev, dev);
-               if (ret) {
-                       DBG("could not add child: %d", ret);
-                       return ret;
-               }
+               component_match_add(&pdev->dev, &match, compare_dev, dev);
        }
-
-       return 0;
-}
 #endif
 
-static int msm_drm_bind(struct device *dev)
-{
-       return drm_platform_init(&msm_driver, to_platform_device(dev));
-}
-
-static void msm_drm_unbind(struct device *dev)
-{
-       drm_put_dev(platform_get_drvdata(to_platform_device(dev)));
-}
-
-static const struct component_master_ops msm_drm_ops = {
-               .add_components = msm_drm_add_components,
-               .bind = msm_drm_bind,
-               .unbind = msm_drm_unbind,
-};
-
-/*
- * Platform driver:
- */
-
-static int msm_pdev_probe(struct platform_device *pdev)
-{
        pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
-       return component_master_add(&pdev->dev, &msm_drm_ops);
+       return component_master_add_with_match(&pdev->dev, &msm_drm_ops, match);
 }
 
 static int msm_pdev_remove(struct platform_device *pdev)