Commit dc51b7d0 authored by Josh Wu's avatar Josh Wu Committed by Mauro Carvalho Chehab

[media] v4l2-clk: v4l2_clk_get() also need to find the of_fullname clock

The soc-camera host will be probed and register a v4l2_clk, but if at
that moment, the i2c device is not available, then the registered
v4l2_clk name is an OF string not a I2C string.

So when i2c sensor probes and calls v4l2_clk_get(), it only searches a
clock with I2C string, like "1-0030".

This patch will search the clock with OF string name if no clock with
I2C string name could be found.
Signed-off-by: default avatarJosh Wu <josh.wu@atmel.com>
Signed-off-by: default avatarGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent 3d83078a
...@@ -15,6 +15,7 @@ ...@@ -15,6 +15,7 @@
#include <linux/list.h> #include <linux/list.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/mutex.h> #include <linux/mutex.h>
#include <linux/of.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/string.h> #include <linux/string.h>
...@@ -39,6 +40,7 @@ struct v4l2_clk *v4l2_clk_get(struct device *dev, const char *id) ...@@ -39,6 +40,7 @@ struct v4l2_clk *v4l2_clk_get(struct device *dev, const char *id)
{ {
struct v4l2_clk *clk; struct v4l2_clk *clk;
struct clk *ccf_clk = clk_get(dev, id); struct clk *ccf_clk = clk_get(dev, id);
char clk_name[V4L2_CLK_NAME_SIZE];
if (PTR_ERR(ccf_clk) == -EPROBE_DEFER) if (PTR_ERR(ccf_clk) == -EPROBE_DEFER)
return ERR_PTR(-EPROBE_DEFER); return ERR_PTR(-EPROBE_DEFER);
...@@ -57,6 +59,13 @@ struct v4l2_clk *v4l2_clk_get(struct device *dev, const char *id) ...@@ -57,6 +59,13 @@ struct v4l2_clk *v4l2_clk_get(struct device *dev, const char *id)
mutex_lock(&clk_lock); mutex_lock(&clk_lock);
clk = v4l2_clk_find(dev_name(dev)); clk = v4l2_clk_find(dev_name(dev));
/* if dev_name is not found, try use the OF name to find again */
if (PTR_ERR(clk) == -ENODEV && dev->of_node) {
v4l2_clk_name_of(clk_name, sizeof(clk_name),
of_node_full_name(dev->of_node));
clk = v4l2_clk_find(clk_name);
}
if (!IS_ERR(clk)) if (!IS_ERR(clk))
atomic_inc(&clk->use_count); atomic_inc(&clk->use_count);
mutex_unlock(&clk_lock); mutex_unlock(&clk_lock);
......
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