diff options
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/video/gspca/pac207.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/media/video/gspca/pac207.c b/drivers/media/video/gspca/pac207.c index 0135ba599e81..ab83d7b69348 100644 --- a/drivers/media/video/gspca/pac207.c +++ b/drivers/media/video/gspca/pac207.c | |||
| @@ -40,9 +40,17 @@ MODULE_LICENSE("GPL"); | |||
| 40 | #define PAC207_BRIGHTNESS_MAX 255 | 40 | #define PAC207_BRIGHTNESS_MAX 255 |
| 41 | #define PAC207_BRIGHTNESS_DEFAULT 4 /* power on default: 4 */ | 41 | #define PAC207_BRIGHTNESS_DEFAULT 4 /* power on default: 4 */ |
| 42 | 42 | ||
| 43 | #define PAC207_EXPOSURE_MIN 4 | 43 | /* An exposure value of 4 also works (3 does not) but then we need to lower |
| 44 | the compression balance setting when in 352x288 mode, otherwise the usb | ||
| 45 | bandwidth is not enough and packets get dropped resulting in corrupt | ||
| 46 | frames. The problem with this is that when the compression balance gets | ||
| 47 | lowered below 0x80, the pac207 starts using a different compression | ||
| 48 | algorithm for some lines, these lines get prefixed with a 0x2dd2 prefix | ||
| 49 | and currently we do not know how to decompress these lines, so for now | ||
| 50 | we use a minimum exposure value of 5 */ | ||
| 51 | #define PAC207_EXPOSURE_MIN 5 | ||
| 44 | #define PAC207_EXPOSURE_MAX 26 | 52 | #define PAC207_EXPOSURE_MAX 26 |
| 45 | #define PAC207_EXPOSURE_DEFAULT 4 /* power on default: 3 ?? */ | 53 | #define PAC207_EXPOSURE_DEFAULT 5 /* power on default: 3 ?? */ |
| 46 | #define PAC207_EXPOSURE_KNEE 11 /* 4 = 30 fps, 11 = 8, 15 = 6 */ | 54 | #define PAC207_EXPOSURE_KNEE 11 /* 4 = 30 fps, 11 = 8, 15 = 6 */ |
| 47 | 55 | ||
| 48 | #define PAC207_GAIN_MIN 0 | 56 | #define PAC207_GAIN_MIN 0 |