[media] v4l: mt9v032: Add OF support
Parse DT properties into a platform data structure when a DT node is
available.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/drivers/media/i2c/mt9v032.c b/drivers/media/i2c/mt9v032.c
index 6d64e23..977f400 100644
--- a/drivers/media/i2c/mt9v032.c
+++ b/drivers/media/i2c/mt9v032.c
@@ -17,6 +17,8 @@
#include <linux/i2c.h>
#include <linux/log2.h>
#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
@@ -26,6 +28,7 @@
#include <media/mt9v032.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
+#include <media/v4l2-of.h>
#include <media/v4l2-subdev.h>
/* The first four rows are black rows. The active area spans 753x481 pixels. */
@@ -876,10 +879,58 @@
* Driver initialization and probing
*/
+static struct mt9v032_platform_data *
+mt9v032_get_pdata(struct i2c_client *client)
+{
+ struct mt9v032_platform_data *pdata;
+ struct v4l2_of_endpoint endpoint;
+ struct device_node *np;
+ struct property *prop;
+
+ if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
+ return client->dev.platform_data;
+
+ np = of_graph_get_next_endpoint(client->dev.of_node, NULL);
+ if (!np)
+ return NULL;
+
+ if (v4l2_of_parse_endpoint(np, &endpoint) < 0)
+ goto done;
+
+ pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ goto done;
+
+ prop = of_find_property(np, "link-frequencies", NULL);
+ if (prop) {
+ u64 *link_freqs;
+ size_t size = prop->length / sizeof(*link_freqs);
+
+ link_freqs = devm_kcalloc(&client->dev, size,
+ sizeof(*link_freqs), GFP_KERNEL);
+ if (!link_freqs)
+ goto done;
+
+ if (of_property_read_u64_array(np, "link-frequencies",
+ link_freqs, size) < 0)
+ goto done;
+
+ pdata->link_freqs = link_freqs;
+ pdata->link_def_freq = link_freqs[0];
+ }
+
+ pdata->clk_pol = !!(endpoint.bus.parallel.flags &
+ V4L2_MBUS_PCLK_SAMPLE_RISING);
+
+done:
+ of_node_put(np);
+ return pdata;
+}
+
static int mt9v032_probe(struct i2c_client *client,
const struct i2c_device_id *did)
{
- struct mt9v032_platform_data *pdata = client->dev.platform_data;
+ struct mt9v032_platform_data *pdata = mt9v032_get_pdata(client);
struct mt9v032 *mt9v032;
unsigned int i;
int ret;
@@ -1037,9 +1088,25 @@
};
MODULE_DEVICE_TABLE(i2c, mt9v032_id);
+#if IS_ENABLED(CONFIG_OF)
+static const struct of_device_id mt9v032_of_match[] = {
+ { .compatible = "aptina,mt9v022" },
+ { .compatible = "aptina,mt9v022m" },
+ { .compatible = "aptina,mt9v024" },
+ { .compatible = "aptina,mt9v024m" },
+ { .compatible = "aptina,mt9v032" },
+ { .compatible = "aptina,mt9v032m" },
+ { .compatible = "aptina,mt9v034" },
+ { .compatible = "aptina,mt9v034m" },
+ { /* Sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mt9v032_of_match);
+#endif
+
static struct i2c_driver mt9v032_driver = {
.driver = {
.name = "mt9v032",
+ .of_match_table = of_match_ptr(mt9v032_of_match),
},
.probe = mt9v032_probe,
.remove = mt9v032_remove,