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[media] dw9714: Set the v4l2 focus ctrl step as 1 

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@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Rajmohan Mani 2017-08-30 14:48:52 -03:00 committed by Mauro Carvalho Chehab
parent c3d1478024
commit 1a58fbf513
1 changed files with 6 additions and 1 deletions
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7
drivers/media/i2c/dw9714.c
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@ -20,6 +20,11 @@
#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
@ -137,7 +142,7 @@ 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",