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media: ov5675: add vflip/hflip control support 

- Add V4L2 controls: horizontal/vertical flip,
  keep SGRBG10 Bayer order output (via change v/hflip)
- Fix Bayer order output in 1296x972 binning registers

Signed-off-by: Shawn Tu <shawnx.tu@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Shawn Tu 2020-01-13 03:27:02 -03:00 committed by Mauro Carvalho Chehab
parent 545d984cc9
commit e8882e1bf3
1 changed files with 73 additions and 9 deletions
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82
drivers/media/i2c/ov5675.c
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@ -63,6 +63,10 @@
#define OV5675_TEST_PATTERN_ENABLE BIT(7)
#define OV5675_TEST_PATTERN_BAR_SHIFT 2
/* Flip Mirror Controls from sensor */
#define OV5675_REG_FORMAT1 0x3820
#define OV5675_REG_FORMAT2 0x373d
#define to_ov5675(_sd) container_of(_sd, struct ov5675, sd)
enum {
@ -314,21 +318,21 @@ static const struct ov5675_reg mode_1296x972_regs[] = {
{0x3800, 0x00},
{0x3801, 0x00},
{0x3802, 0x00},
{0x3803, 0xf4},
{0x3803, 0x00},
{0x3804, 0x0a},
{0x3805, 0x3f},
{0x3806, 0x06},
{0x3807, 0xb3},
{0x3806, 0x07},
{0x3807, 0xb7},
{0x3808, 0x05},
{0x3809, 0x00},
{0x380a, 0x02},
{0x380b, 0xd0},
{0x3809, 0x10},
{0x380a, 0x03},
{0x380b, 0xcc},
{0x380c, 0x02},
{0x380d, 0xee},
{0x380e, 0x07},
{0x380f, 0xe4},
{0x3811, 0x10},
{0x3813, 0x09},
{0x380f, 0xd0},
{0x3811, 0x08},
{0x3813, 0x0d},
{0x3814, 0x03},
{0x3815, 0x01},
{0x3816, 0x03},
@ -604,6 +608,53 @@ static int ov5675_test_pattern(struct ov5675 *ov5675, u32 pattern)
OV5675_REG_VALUE_08BIT, pattern);
}
/*
* OV5675 supports keeping the pixel order by mirror and flip function
* The Bayer order isn't affected by the flip controls
*/
static int ov5675_set_ctrl_hflip(struct ov5675 *ov5675, u32 ctrl_val)
{
int ret;
u32 val;
ret = ov5675_read_reg(ov5675, OV5675_REG_FORMAT1,
OV5675_REG_VALUE_08BIT, &val);
if (ret)
return ret;
return ov5675_write_reg(ov5675, OV5675_REG_FORMAT1,
OV5675_REG_VALUE_08BIT,
ctrl_val ? val & ~BIT(3) : val);
}
static int ov5675_set_ctrl_vflip(struct ov5675 *ov5675, u8 ctrl_val)
{
int ret;
u32 val;
ret = ov5675_read_reg(ov5675, OV5675_REG_FORMAT1,
OV5675_REG_VALUE_08BIT, &val);
if (ret)
return ret;
ret = ov5675_write_reg(ov5675, OV5675_REG_FORMAT1,
OV5675_REG_VALUE_08BIT,
ctrl_val ? val | BIT(4) | BIT(5) : val);
if (ret)
return ret;
ret = ov5675_read_reg(ov5675, OV5675_REG_FORMAT2,
OV5675_REG_VALUE_08BIT, &val);
if (ret)
return ret;
return ov5675_write_reg(ov5675, OV5675_REG_FORMAT2,
OV5675_REG_VALUE_08BIT,
ctrl_val ? val | BIT(1) : val);
}
static int ov5675_set_ctrl(struct v4l2_ctrl *ctrl)
{
struct ov5675 *ov5675 = container_of(ctrl->handler,
@ -654,6 +705,14 @@ static int ov5675_set_ctrl(struct v4l2_ctrl *ctrl)
ret = ov5675_test_pattern(ov5675, ctrl->val);
break;
case V4L2_CID_HFLIP:
ov5675_set_ctrl_hflip(ov5675, ctrl->val);
break;
case V4L2_CID_VFLIP:
ov5675_set_ctrl_vflip(ov5675, ctrl->val);
break;
default:
ret = -EINVAL;
break;
@ -722,6 +781,11 @@ static int ov5675_init_controls(struct ov5675 *ov5675)
V4L2_CID_TEST_PATTERN,
ARRAY_SIZE(ov5675_test_pattern_menu) - 1,
0, 0, ov5675_test_pattern_menu);
v4l2_ctrl_new_std(ctrl_hdlr, &ov5675_ctrl_ops,
V4L2_CID_HFLIP, 0, 1, 1, 0);
v4l2_ctrl_new_std(ctrl_hdlr, &ov5675_ctrl_ops,
V4L2_CID_VFLIP, 0, 1, 1, 0);
if (ctrl_hdlr->error)
return ctrl_hdlr->error;