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-rw-r--r--drivers/media/video/Kconfig7
-rw-r--r--drivers/media/video/mt9v022.c141
2 files changed, 42 insertions, 106 deletions
diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index 24dfb39a6cc..d5ddb819a96 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -726,13 +726,6 @@ config SOC_CAMERA_MT9V022
help
This driver supports MT9V022 cameras from Micron
-config MT9V022_PCA9536_SWITCH
- bool "pca9536 datawidth switch for mt9v022"
- depends on SOC_CAMERA_MT9V022 && GENERIC_GPIO
- help
- Select this if your MT9V022 camera uses a PCA9536 I2C GPIO
- extender to switch between 8 and 10 bit datawidth modes
-
config SOC_CAMERA_TW9910
tristate "tw9910 support"
depends on SOC_CAMERA && I2C
diff --git a/drivers/media/video/mt9v022.c b/drivers/media/video/mt9v022.c
index 3871d4a2d8f..4d3b4813c32 100644
--- a/drivers/media/video/mt9v022.c
+++ b/drivers/media/video/mt9v022.c
@@ -13,7 +13,6 @@
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/log2.h>
-#include <linux/gpio.h>
#include <media/v4l2-common.h>
#include <media/v4l2-chip-ident.h>
@@ -89,9 +88,7 @@ struct mt9v022 {
struct i2c_client *client;
struct soc_camera_device icd;
int model; /* V4L2_IDENT_MT9V022* codes from v4l2-chip-ident.h */
- int switch_gpio;
u16 chip_control;
- unsigned char datawidth;
};
static int reg_read(struct soc_camera_device *icd, const u8 reg)
@@ -209,66 +206,6 @@ static int mt9v022_stop_capture(struct soc_camera_device *icd)
return 0;
}
-static int bus_switch_request(struct mt9v022 *mt9v022, struct soc_camera_link *icl)
-{
-#ifdef CONFIG_MT9V022_PCA9536_SWITCH
- int ret;
- unsigned int gpio = icl->gpio;
-
- if (gpio_is_valid(gpio)) {
- /* We have a data bus switch. */
- ret = gpio_request(gpio, "mt9v022");
- if (ret < 0) {
- dev_err(&mt9v022->client->dev, "Cannot get GPIO %u\n", gpio);
- return ret;
- }
-
- ret = gpio_direction_output(gpio, 0);
- if (ret < 0) {
- dev_err(&mt9v022->client->dev,
- "Cannot set GPIO %u to output\n", gpio);
- gpio_free(gpio);
- return ret;
- }
- }
-
- mt9v022->switch_gpio = gpio;
-#else
- mt9v022->switch_gpio = -EINVAL;
-#endif
- return 0;
-}
-
-static void bus_switch_release(struct mt9v022 *mt9v022)
-{
-#ifdef CONFIG_MT9V022_PCA9536_SWITCH
- if (gpio_is_valid(mt9v022->switch_gpio))
- gpio_free(mt9v022->switch_gpio);
-#endif
-}
-
-static int bus_switch_act(struct mt9v022 *mt9v022, int go8bit)
-{
-#ifdef CONFIG_MT9V022_PCA9536_SWITCH
- if (!gpio_is_valid(mt9v022->switch_gpio))
- return -ENODEV;
-
- gpio_set_value_cansleep(mt9v022->switch_gpio, go8bit);
- return 0;
-#else
- return -ENODEV;
-#endif
-}
-
-static int bus_switch_possible(struct mt9v022 *mt9v022)
-{
-#ifdef CONFIG_MT9V022_PCA9536_SWITCH
- return gpio_is_valid(mt9v022->switch_gpio);
-#else
- return 0;
-#endif
-}
-
static int mt9v022_set_bus_param(struct soc_camera_device *icd,
unsigned long flags)
{
@@ -282,19 +219,17 @@ static int mt9v022_set_bus_param(struct soc_camera_device *icd,
if (!is_power_of_2(width_flag))
return -EINVAL;
- if ((mt9v022->datawidth != 10 && (width_flag == SOCAM_DATAWIDTH_10)) ||
- (mt9v022->datawidth != 9 && (width_flag == SOCAM_DATAWIDTH_9)) ||
- (mt9v022->datawidth != 8 && (width_flag == SOCAM_DATAWIDTH_8))) {
- /* Well, we actually only can do 10 or 8 bits... */
- if (width_flag == SOCAM_DATAWIDTH_9)
- return -EINVAL;
-
- ret = bus_switch_act(mt9v022,
- width_flag == SOCAM_DATAWIDTH_8);
- if (ret < 0)
+ if (icl->set_bus_param) {
+ ret = icl->set_bus_param(icl, width_flag);
+ if (ret)
return ret;
-
- mt9v022->datawidth = width_flag == SOCAM_DATAWIDTH_8 ? 8 : 10;
+ } else {
+ /*
+ * Without board specific bus width settings we only support the
+ * sensors native bus width
+ */
+ if (width_flag != SOCAM_DATAWIDTH_10)
+ return -EINVAL;
}
flags = soc_camera_apply_sensor_flags(icl, flags);
@@ -328,10 +263,14 @@ static int mt9v022_set_bus_param(struct soc_camera_device *icd,
static unsigned long mt9v022_query_bus_param(struct soc_camera_device *icd)
{
struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
- unsigned int width_flag = SOCAM_DATAWIDTH_10;
+ struct soc_camera_link *icl = mt9v022->client->dev.platform_data;
+ unsigned int width_flag;
- if (bus_switch_possible(mt9v022))
- width_flag |= SOCAM_DATAWIDTH_8;
+ if (icl->query_bus_param)
+ width_flag = icl->query_bus_param(icl) &
+ SOCAM_DATAWIDTH_MASK;
+ else
+ width_flag = SOCAM_DATAWIDTH_10;
return SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING |
SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW |
@@ -715,6 +654,7 @@ static int mt9v022_video_probe(struct soc_camera_device *icd)
struct soc_camera_link *icl = mt9v022->client->dev.platform_data;
s32 data;
int ret;
+ unsigned long flags;
if (!icd->dev.parent ||
to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
@@ -748,22 +688,36 @@ static int mt9v022_video_probe(struct soc_camera_device *icd)
ret = reg_write(icd, MT9V022_PIXEL_OPERATION_MODE, 4 | 0x11);
mt9v022->model = V4L2_IDENT_MT9V022IX7ATC;
icd->formats = mt9v022_colour_formats;
- if (gpio_is_valid(icl->gpio))
- icd->num_formats = ARRAY_SIZE(mt9v022_colour_formats);
- else
- icd->num_formats = 1;
} else {
ret = reg_write(icd, MT9V022_PIXEL_OPERATION_MODE, 0x11);
mt9v022->model = V4L2_IDENT_MT9V022IX7ATM;
icd->formats = mt9v022_monochrome_formats;
- if (gpio_is_valid(icl->gpio))
- icd->num_formats = ARRAY_SIZE(mt9v022_monochrome_formats);
- else
- icd->num_formats = 1;
}
- if (!ret)
- ret = soc_camera_video_start(icd);
+ if (ret < 0)
+ goto eisis;
+
+ icd->num_formats = 0;
+
+ /*
+ * This is a 10bit sensor, so by default we only allow 10bit.
+ * The platform may support different bus widths due to
+ * different routing of the data lines.
+ */
+ if (icl->query_bus_param)
+ flags = icl->query_bus_param(icl);
+ else
+ flags = SOCAM_DATAWIDTH_10;
+
+ if (flags & SOCAM_DATAWIDTH_10)
+ icd->num_formats++;
+ else
+ icd->formats++;
+
+ if (flags & SOCAM_DATAWIDTH_8)
+ icd->num_formats++;
+
+ ret = soc_camera_video_start(icd);
if (ret < 0)
goto eisis;
@@ -828,14 +782,6 @@ static int mt9v022_probe(struct i2c_client *client,
icd->height_max = 480;
icd->y_skip_top = 1;
icd->iface = icl->bus_id;
- /* Default datawidth - this is the only width this camera (normally)
- * supports. It is only with extra logic that it can support
- * other widths. Therefore it seems to be a sensible default. */
- mt9v022->datawidth = 10;
-
- ret = bus_switch_request(mt9v022, icl);
- if (ret)
- goto eswinit;
ret = soc_camera_device_register(icd);
if (ret)
@@ -844,8 +790,6 @@ static int mt9v022_probe(struct i2c_client *client,
return 0;
eisdr:
- bus_switch_release(mt9v022);
-eswinit:
kfree(mt9v022);
return ret;
}
@@ -855,7 +799,6 @@ static int mt9v022_remove(struct i2c_client *client)
struct mt9v022 *mt9v022 = i2c_get_clientdata(client);
soc_camera_device_unregister(&mt9v022->icd);
- bus_switch_release(mt9v022);
kfree(mt9v022);
return 0;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-02 10:13:50 +0000