The armada DRM driver keeps some old platform data compatibility in the
probe function that makes moving to the generic drm_of_component_probe()
a bit more complicated that it should. Refactor the probe function to do
the platform_data processing after the generic probe (and if that fails).
This way future cleanup can further remove support for it.
Signed-off-by: Liviu Dudau <Liviu.Dudau at arm.com>
---
drivers/gpu/drm/armada/armada_drv.c | 83 +++++++++++++------------------------
1 file changed, 28 insertions(+), 55 deletions(-)
diff --git a/drivers/gpu/drm/armada/armada_drv.c
b/drivers/gpu/drm/armada/armada_drv.c
index 225034b..990080d 100644
--- a/drivers/gpu/drm/armada/armada_drv.c
+++ b/drivers/gpu/drm/armada/armada_drv.c
@@ -11,6 +11,7 @@
#include <linux/of_graph.h>
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
+#include <drm/drm_of.h>
#include "armada_crtc.h"
#include "armada_drm.h"
#include "armada_gem.h"
@@ -370,47 +371,36 @@ static void armada_add_endpoints(struct device *dev,
}
}
-static int armada_drm_find_components(struct device *dev,
- struct component_match **match)
-{
- struct device_node *port;
- int i;
-
- if (dev->of_node) {
- struct device_node *np = dev->of_node;
-
- for (i = 0; ; i++) {
- port = of_parse_phandle(np, "ports", i);
- if (!port)
- break;
+static const struct component_master_ops armada_master_ops = {
+ .bind = armada_drm_bind,
+ .unbind = armada_drm_unbind,
+};
- component_match_add(dev, match, compare_of, port);
- of_node_put(port);
- }
+static int armada_drm_probe(struct platform_device *pdev)
+{
+ int ret;
- if (i == 0) {
- dev_err(dev, "missing 'ports' property\n");
- return -ENODEV;
- }
+ if (!is_componentized(&pdev->dev))
+ return drm_platform_init(&armada_drm_driver, pdev);
- for (i = 0; ; i++) {
- port = of_parse_phandle(np, "ports", i);
- if (!port)
- break;
+ ret = drm_of_component_probe(&pdev->dev, compare_dev_name,
+ &armada_master_ops);
+ if (ret != -EINVAL)
+ return ret;
- armada_add_endpoints(dev, match, port);
- of_node_put(port);
- }
- } else if (dev->platform_data) {
- char **devices = dev->platform_data;
+ if (pdev->dev.platform_data) {
+ struct component_match *match = NULL;
+ char **devices = pdev->dev.platform_data;
+ struct device_node *port;
struct device *d;
+ int i;
for (i = 0; devices[i]; i++)
- component_match_add(dev, match, compare_dev_name,
+ component_match_add(&pdev->dev, &match,
compare_dev_name,
devices[i]);
if (i == 0) {
- dev_err(dev, "missing 'ports' property\n");
+ dev_err(&pdev->dev, "missing 'ports' property\n");
return -ENODEV;
}
@@ -419,35 +409,18 @@ static int armada_drm_find_components(struct device *dev,
devices[i]);
if (d && d->of_node) {
for_each_child_of_node(d->of_node, port)
- armada_add_endpoints(dev, match, port);
+ armada_add_endpoints(&pdev->dev,
+ &match, port);
}
put_device(d);
}
- }
-
- return 0;
-}
-
-static const struct component_master_ops armada_master_ops = {
- .bind = armada_drm_bind,
- .unbind = armada_drm_unbind,
-};
-static int armada_drm_probe(struct platform_device *pdev)
-{
- if (is_componentized(&pdev->dev)) {
- struct component_match *match = NULL;
- int ret;
-
- ret = armada_drm_find_components(&pdev->dev, &match);
- if (ret < 0)
- return ret;
-
- return component_master_add_with_match(&pdev->dev,
- &armada_master_ops, match);
- } else {
- return drm_platform_init(&armada_drm_driver, pdev);
+ ret = component_master_add_with_match(&pdev->dev,
+ &armada_master_ops,
+ match);
}
+
+ return ret;
}
static int armada_drm_remove(struct platform_device *pdev)
--
2.6.0
