Hi, Guennadi
After look deep into this patch, I found you miss one line that should
be changed as well.
It's In function v4l2_clk_get(), there still has one line code called
v4l2_clk_find(dev_id, id).
You need to change it to v4l2_clk_find(dev_id, NULL) as well.
Otherwise the code that many sensor used: v4l2_clk_get(&client->dev,
"mclk") cannot acquired the "mclk" clock.
After above changes, this patch works for me.
On 1/2/2015 7:48 PM, Guennadi Liakhovetski wrote:
All uses of the v4l2_clk API so far only register one clock with a fixed
name. This allows us to get rid of it, which also will make CCF and DT
integration easier.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
---
drivers/media/platform/soc_camera/soc_camera.c | 6 +++---
drivers/media/usb/em28xx/em28xx-camera.c | 2 +-
drivers/media/v4l2-core/v4l2-clk.c | 24 +++++++++++-------------
include/media/v4l2-clk.h | 7 +++----
4 files changed, 18 insertions(+), 21 deletions(-)
diff --git a/drivers/media/platform/soc_camera/soc_camera.c b/drivers/media/platform/soc_camera/soc_camera.c
index f4be2a1..ce192b6 100644
--- a/drivers/media/platform/soc_camera/soc_camera.c
+++ b/drivers/media/platform/soc_camera/soc_camera.c
@@ -1380,7 +1380,7 @@ static int soc_camera_i2c_init(struct soc_camera_device *icd,
snprintf(clk_name, sizeof(clk_name), "%d-%04x",
shd->i2c_adapter_id, shd->board_info->addr);
- icd->clk = v4l2_clk_register(&soc_camera_clk_ops, clk_name, "mclk", icd);
+ icd->clk = v4l2_clk_register(&soc_camera_clk_ops, clk_name, icd);
if (IS_ERR(icd->clk)) {
ret = PTR_ERR(icd->clk);
goto eclkreg;
@@ -1561,7 +1561,7 @@ static int scan_async_group(struct soc_camera_host *ici,
snprintf(clk_name, sizeof(clk_name), "%d-%04x",
sasd->asd.match.i2c.adapter_id, sasd->asd.match.i2c.address);
- icd->clk = v4l2_clk_register(&soc_camera_clk_ops, clk_name, "mclk", icd);
+ icd->clk = v4l2_clk_register(&soc_camera_clk_ops, clk_name, icd);
if (IS_ERR(icd->clk)) {
ret = PTR_ERR(icd->clk);
goto eclkreg;
@@ -1666,7 +1666,7 @@ static int soc_of_bind(struct soc_camera_host *ici,
snprintf(clk_name, sizeof(clk_name), "of-%s",
of_node_full_name(remote));
- icd->clk = v4l2_clk_register(&soc_camera_clk_ops, clk_name, "mclk", icd);
+ icd->clk = v4l2_clk_register(&soc_camera_clk_ops, clk_name, icd);
if (IS_ERR(icd->clk)) {
ret = PTR_ERR(icd->clk);
goto eclkreg;
diff --git a/drivers/media/usb/em28xx/em28xx-camera.c b/drivers/media/usb/em28xx/em28xx-camera.c
index 7be661f..a4b22c2 100644
--- a/drivers/media/usb/em28xx/em28xx-camera.c
+++ b/drivers/media/usb/em28xx/em28xx-camera.c
@@ -330,7 +330,7 @@ int em28xx_init_camera(struct em28xx *dev)
v4l2_clk_name_i2c(clk_name, sizeof(clk_name),
i2c_adapter_id(adap), client->addr);
- v4l2->clk = v4l2_clk_register_fixed(clk_name, "mclk", -EINVAL);
+ v4l2->clk = v4l2_clk_register_fixed(clk_name, -EINVAL);
if (IS_ERR(v4l2->clk))
return PTR_ERR(v4l2->clk);
diff --git a/drivers/media/v4l2-core/v4l2-clk.c b/drivers/media/v4l2-core/v4l2-clk.c
index e18cc04..c210906 100644
--- a/drivers/media/v4l2-core/v4l2-clk.c
+++ b/drivers/media/v4l2-core/v4l2-clk.c
@@ -31,7 +31,8 @@ static struct v4l2_clk *v4l2_clk_find(const char *dev_id, const char *id)
if (strcmp(dev_id, clk->dev_id))
continue;
- if (!id || !clk->id || !strcmp(clk->id, id))
+ if ((!id && !clk->id) ||
+ (id && clk->id && !strcmp(clk->id, id)))
return clk;
}
@@ -127,8 +128,8 @@ void v4l2_clk_disable(struct v4l2_clk *clk)
mutex_lock(&clk->lock);
enable = --clk->enable;
- if (WARN(enable < 0, "Unbalanced %s() on %s:%s!\n", __func__,
- clk->dev_id, clk->id))
+ if (WARN(enable < 0, "Unbalanced %s() on %s!\n", __func__,
+ clk->dev_id))
clk->enable++;
else if (!enable && clk->ops->disable)
clk->ops->disable(clk);
@@ -181,7 +182,7 @@ EXPORT_SYMBOL(v4l2_clk_set_rate);
struct v4l2_clk *v4l2_clk_register(const struct v4l2_clk_ops *ops,
const char *dev_id,
- const char *id, void *priv)
+ void *priv)
{
struct v4l2_clk *clk;
int ret;
@@ -193,9 +194,8 @@ struct v4l2_clk *v4l2_clk_register(const struct v4l2_clk_ops *ops,
if (!clk)
return ERR_PTR(-ENOMEM);
- clk->id = kstrdup(id, GFP_KERNEL);
clk->dev_id = kstrdup(dev_id, GFP_KERNEL);
- if ((id && !clk->id) || !clk->dev_id) {
+ if (!clk->dev_id) {
ret = -ENOMEM;
goto ealloc;
}
@@ -205,7 +205,7 @@ struct v4l2_clk *v4l2_clk_register(const struct v4l2_clk_ops *ops,
mutex_init(&clk->lock);
mutex_lock(&clk_lock);
- if (!IS_ERR(v4l2_clk_find(dev_id, id))) {
+ if (!IS_ERR(v4l2_clk_find(dev_id, NULL))) {
like mentioned in the beginning of the mail, you need to do same change
in v4l2_clk_get().
Best Regards,
Josh Wu
mutex_unlock(&clk_lock);
ret = -EEXIST;
goto eexist;
@@ -217,7 +217,6 @@ struct v4l2_clk *v4l2_clk_register(const struct v4l2_clk_ops *ops,
eexist:
ealloc:
- kfree(clk->id);
kfree(clk->dev_id);
kfree(clk);
return ERR_PTR(ret);
@@ -227,15 +226,14 @@ EXPORT_SYMBOL(v4l2_clk_register);
void v4l2_clk_unregister(struct v4l2_clk *clk)
{
if (WARN(atomic_read(&clk->use_count),
- "%s(): Refusing to unregister ref-counted %s:%s clock!\n",
- __func__, clk->dev_id, clk->id))
+ "%s(): Refusing to unregister ref-counted %s clock!\n",
+ __func__, clk->dev_id))
return;
mutex_lock(&clk_lock);
list_del(&clk->list);
mutex_unlock(&clk_lock);
- kfree(clk->id);
kfree(clk->dev_id);
kfree(clk);
}
@@ -253,7 +251,7 @@ static unsigned long fixed_get_rate(struct v4l2_clk *clk)
}
struct v4l2_clk *__v4l2_clk_register_fixed(const char *dev_id,
- const char *id, unsigned long rate, struct module *owner)
+ unsigned long rate, struct module *owner)
{
struct v4l2_clk *clk;
struct v4l2_clk_fixed *priv = kzalloc(sizeof(*priv), GFP_KERNEL);
@@ -265,7 +263,7 @@ struct v4l2_clk *__v4l2_clk_register_fixed(const char *dev_id,
priv->ops.get_rate = fixed_get_rate;
priv->ops.owner = owner;
- clk = v4l2_clk_register(&priv->ops, dev_id, id, priv);
+ clk = v4l2_clk_register(&priv->ops, dev_id, priv);
if (IS_ERR(clk))
kfree(priv);
diff --git a/include/media/v4l2-clk.h b/include/media/v4l2-clk.h
index 0b36cc1..8f06967 100644
--- a/include/media/v4l2-clk.h
+++ b/include/media/v4l2-clk.h
@@ -43,7 +43,7 @@ struct v4l2_clk_ops {
struct v4l2_clk *v4l2_clk_register(const struct v4l2_clk_ops *ops,
const char *dev_name,
- const char *name, void *priv);
+ void *priv);
void v4l2_clk_unregister(struct v4l2_clk *clk);
struct v4l2_clk *v4l2_clk_get(struct device *dev, const char *id);
void v4l2_clk_put(struct v4l2_clk *clk);
@@ -55,14 +55,13 @@ int v4l2_clk_set_rate(struct v4l2_clk *clk, unsigned long rate);
struct module;
struct v4l2_clk *__v4l2_clk_register_fixed(const char *dev_id,
- const char *id, unsigned long rate, struct module *owner);
+ unsigned long rate, struct module *owner);
void v4l2_clk_unregister_fixed(struct v4l2_clk *clk);
static inline struct v4l2_clk *v4l2_clk_register_fixed(const char *dev_id,
- const char *id,
unsigned long rate)
{
- return __v4l2_clk_register_fixed(dev_id, id, rate, THIS_MODULE);
+ return __v4l2_clk_register_fixed(dev_id, rate, THIS_MODULE);
}
#define v4l2_clk_name_i2c(name, size, adap, client) snprintf(name, size, \
--
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