Current v4l2 focus ctrl step value of 16, limits the minimum granularity of focus positions to 16. Setting this value as 1, enables more accurate focus positions. Signed-off-by: Rajmohan Mani <rajmohan.mani@xxxxxxxxx> --- drivers/media/i2c/dw9714.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/media/i2c/dw9714.c b/drivers/media/i2c/dw9714.c index 6a607d7..f9212a8 100644 --- a/drivers/media/i2c/dw9714.c +++ b/drivers/media/i2c/dw9714.c @@ -22,6 +22,11 @@ #define DW9714_NAME "dw9714" #define DW9714_MAX_FOCUS_POS 1023 /* + * This sets the minimum granularity for the focus positions. + * A value of 1 gives maximum accuracy for a desired focus position + */ +#define DW9714_FOCUS_STEPS 1 +/* * This acts as the minimum granularity of lens movement. * Keep this value power of 2, so the control steps can be * uniformly adjusted for gradual lens movement, with desired @@ -138,7 +143,7 @@ static int dw9714_init_controls(struct dw9714_device *dev_vcm) v4l2_ctrl_handler_init(hdl, 1); v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FOCUS_ABSOLUTE, - 0, DW9714_MAX_FOCUS_POS, DW9714_CTRL_STEPS, 0); + 0, DW9714_MAX_FOCUS_POS, DW9714_FOCUS_STEPS, 0); if (hdl->error) dev_err(&client->dev, "%s fail error: 0x%x\n", -- 1.9.1
