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-rw-r--r--arch/arm/mach-pxa/pcm990-baseboard.c23
-rw-r--r--drivers/media/video/mt9m001.c3
-rw-r--r--drivers/media/video/mt9v022.c3
-rw-r--r--include/media/soc_camera.h1
4 files changed, 23 insertions, 7 deletions
diff --git a/arch/arm/mach-pxa/pcm990-baseboard.c b/arch/arm/mach-pxa/pcm990-baseboard.c
index 095521e9ee2..01791d74e08 100644
--- a/arch/arm/mach-pxa/pcm990-baseboard.c
+++ b/arch/arm/mach-pxa/pcm990-baseboard.c
@@ -380,12 +380,12 @@ static struct pca953x_platform_data pca9536_data = {
.gpio_base = NR_BUILTIN_GPIO,
};
-static int gpio_bus_switch;
+static int gpio_bus_switch = -EINVAL;
static int pcm990_camera_set_bus_param(struct soc_camera_link *link,
- unsigned long flags)
+ unsigned long flags)
{
- if (gpio_bus_switch <= 0) {
+ if (gpio_bus_switch < 0) {
if (flags == SOCAM_DATAWIDTH_10)
return 0;
else
@@ -404,25 +404,34 @@ static unsigned long pcm990_camera_query_bus_param(struct soc_camera_link *link)
{
int ret;
- if (!gpio_bus_switch) {
+ if (gpio_bus_switch < 0) {
ret = gpio_request(NR_BUILTIN_GPIO, "camera");
if (!ret) {
gpio_bus_switch = NR_BUILTIN_GPIO;
gpio_direction_output(gpio_bus_switch, 0);
- } else
- gpio_bus_switch = -EINVAL;
+ }
}
- if (gpio_bus_switch > 0)
+ if (gpio_bus_switch >= 0)
return SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_10;
else
return SOCAM_DATAWIDTH_10;
}
+static void pcm990_camera_free_bus(struct soc_camera_link *link)
+{
+ if (gpio_bus_switch < 0)
+ return;
+
+ gpio_free(gpio_bus_switch);
+ gpio_bus_switch = -EINVAL;
+}
+
static struct soc_camera_link iclink = {
.bus_id = 0, /* Must match with the camera ID above */
.query_bus_param = pcm990_camera_query_bus_param,
.set_bus_param = pcm990_camera_set_bus_param,
+ .free_bus = pcm990_camera_free_bus,
};
/* Board I2C devices. */
diff --git a/drivers/media/video/mt9m001.c b/drivers/media/video/mt9m001.c
index 684f62fa789..3838ff77381 100644
--- a/drivers/media/video/mt9m001.c
+++ b/drivers/media/video/mt9m001.c
@@ -604,10 +604,13 @@ ei2c:
static void mt9m001_video_remove(struct soc_camera_device *icd)
{
struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
+ struct soc_camera_link *icl = mt9m001->client->dev.platform_data;
dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9m001->client->addr,
icd->dev.parent, icd->vdev);
soc_camera_video_stop(icd);
+ if (icl->free_bus)
+ icl->free_bus(icl);
}
static int mt9m001_probe(struct i2c_client *client,
diff --git a/drivers/media/video/mt9v022.c b/drivers/media/video/mt9v022.c
index 4d3b4813c32..412b399baca 100644
--- a/drivers/media/video/mt9v022.c
+++ b/drivers/media/video/mt9v022.c
@@ -735,10 +735,13 @@ ei2c:
static void mt9v022_video_remove(struct soc_camera_device *icd)
{
struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
+ struct soc_camera_link *icl = mt9v022->client->dev.platform_data;
dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9v022->client->addr,
icd->dev.parent, icd->vdev);
soc_camera_video_stop(icd);
+ if (icl->free_bus)
+ icl->free_bus(icl);
}
static int mt9v022_probe(struct i2c_client *client,
diff --git a/include/media/soc_camera.h b/include/media/soc_camera.h
index 37013688af4..396c32550e0 100644
--- a/include/media/soc_camera.h
+++ b/include/media/soc_camera.h
@@ -107,6 +107,7 @@ struct soc_camera_link {
*/
int (*set_bus_param)(struct soc_camera_link *, unsigned long flags);
unsigned long (*query_bus_param)(struct soc_camera_link *);
+ void (*free_bus)(struct soc_camera_link *);
};
static inline struct soc_camera_device *to_soc_camera_dev(struct device *dev)