diff options
| -rw-r--r-- | drivers/media/i2c/ar0521.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/drivers/media/i2c/ar0521.c b/drivers/media/i2c/ar0521.c index 20a87dde2289..bcbd6ffd8832 100644 --- a/drivers/media/i2c/ar0521.c +++ b/drivers/media/i2c/ar0521.c @@ -26,10 +26,17 @@ #define AR0521_PIXEL_CLOCK_MIN (168 * 1000 * 1000) #define AR0521_PIXEL_CLOCK_MAX (414 * 1000 * 1000) +#define AR0521_NATIVE_WIDTH 2604u +#define AR0521_NATIVE_HEIGHT 1964u +#define AR0521_MIN_X_ADDR_START 0u +#define AR0521_MIN_Y_ADDR_START 0u +#define AR0521_MAX_X_ADDR_END 2603u +#define AR0521_MAX_Y_ADDR_END 1955u + #define AR0521_WIDTH_MIN 8u -#define AR0521_WIDTH_MAX 2608u +#define AR0521_WIDTH_MAX 2592u #define AR0521_HEIGHT_MIN 8u -#define AR0521_HEIGHT_MAX 1958u +#define AR0521_HEIGHT_MAX 1944u #define AR0521_WIDTH_BLANKING_MIN 572u #define AR0521_HEIGHT_BLANKING_MIN 38u /* must be even */ @@ -176,13 +183,17 @@ static int ar0521_write_reg(struct ar0521_dev *sensor, u16 reg, u16 val) static int ar0521_set_geometry(struct ar0521_dev *sensor) { + /* Center the image in the visible output window. */ + u16 x = clamp((AR0521_WIDTH_MAX - sensor->fmt.width) / 2, + AR0521_MIN_X_ADDR_START, AR0521_MAX_X_ADDR_END); + u16 y = clamp(((AR0521_HEIGHT_MAX - sensor->fmt.height) / 2) & ~1, + AR0521_MIN_Y_ADDR_START, AR0521_MAX_Y_ADDR_END); + /* All dimensions are unsigned 12-bit integers */ - u16 x = (AR0521_WIDTH_MAX - sensor->fmt.width) / 2; - u16 y = ((AR0521_HEIGHT_MAX - sensor->fmt.height) / 2) & ~1; __be16 regs[] = { be(AR0521_REG_FRAME_LENGTH_LINES), - be(sensor->total_height), - be(sensor->total_width), + be(sensor->fmt.height + sensor->ctrls.vblank->val), + be(sensor->fmt.width + sensor->ctrls.hblank->val), be(x), be(y), be(x + sensor->fmt.width - 1), |