From a39fbb1d747aa88e410d0a25af92cd9e179ba0f4 Mon Sep 17 00:00:00 2001 From: Daniel Drake Date: Mon, 30 Apr 2012 18:06:27 -0300 Subject: [PATCH] [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 Acked-by: Jonathan Corbet Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/via-camera.c | 15 +++++++++++++-- 1 file 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 #include #include +#include #include #include #include @@ -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; -- 2.39.5