diff options
| author | Daniel Drake <dsd@laptop.org> | 2012-05-01 01:06:27 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-05-14 23:35:22 +0400 |
| commit | a39fbb1d747aa88e410d0a25af92cd9e179ba0f4 (patch) | |
| tree | 3620b1ed438fa98715dfcaf119c0c62307d28e9b /drivers/media/video/via-camera.c | |
| parent | 3477e2ab0e52fe55999130eee833af9a29e2789a (diff) | |
| download | linux-a39fbb1d747aa88e410d0a25af92cd9e179ba0f4.tar.xz | |
[media] via-camera: specify XO-1.5 camera clock speed
For the ov7670 camera to return images at the requested frame rate,
it needs to make calculations based on the clock speed, which is
a completely external factor (depends on the wiring of the system).
On the XO-1.5, which is the only known via-camera user, the camera
is clocked at 90MHz.
Pass this information to the ov7670 driver, to fix an issue where
a framerate of 3x the requested amount was being provided.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/via-camera.c')
| -rw-r--r-- | drivers/media/video/via-camera.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/media/video/via-camera.c b/drivers/media/video/via-camera.c index 20f7237b8242..308e150a39bc 100644 --- a/drivers/media/video/via-camera.c +++ b/drivers/media/video/via-camera.c @@ -18,6 +18,7 @@ #include <media/v4l2-device.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-chip-ident.h> +#include <media/ov7670.h> #include <media/videobuf-dma-sg.h> #include <linux/delay.h> #include <linux/dma-mapping.h> @@ -1347,11 +1348,21 @@ static __devinit bool viacam_serial_is_enabled(void) return false; } +static struct ov7670_config sensor_cfg = { + /* The XO-1.5 (only known user) clocks the camera at 90MHz. */ + .clock_speed = 90, +}; + static __devinit int viacam_probe(struct platform_device *pdev) { int ret; struct i2c_adapter *sensor_adapter; struct viafb_dev *viadev = pdev->dev.platform_data; + struct i2c_board_info ov7670_info = { + .type = "ov7670", + .addr = 0x42 >> 1, + .platform_data = &sensor_cfg, + }; /* * Note that there are actually two capture channels on @@ -1433,8 +1444,8 @@ static __devinit int viacam_probe(struct platform_device *pdev) * is OLPC-specific. 0x42 assumption is ov7670-specific. */ sensor_adapter = viafb_find_i2c_adapter(VIA_PORT_31); - cam->sensor = v4l2_i2c_new_subdev(&cam->v4l2_dev, sensor_adapter, - "ov7670", 0x42 >> 1, NULL); + cam->sensor = v4l2_i2c_new_subdev_board(&cam->v4l2_dev, sensor_adapter, + &ov7670_info, NULL); if (cam->sensor == NULL) { dev_err(&pdev->dev, "Unable to find the sensor!\n"); ret = -ENODEV; |