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media: i2c: imx290: Add H and V flip controls

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The sensor supports horizontal and vertical flips, so support them
through V4L2_CID_HFLIP and V4L2_CID_VFLIP.

This sensor does NOT change the Bayer order when changing the
direction of readout, therefore no special handling is required for
that.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
This commit is contained in:
Dave Stevenson
2020-06-11 18:34:16 +01:00
committed by popcornmix
parent 8483f0d759
commit 9764f3459c
1 changed files with 22 additions and 0 deletions
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22
drivers/media/i2c/imx290.c
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@@ -34,6 +34,7 @@ enum imx290_clk_index {
#define IMX290_STANDBY 0x3000
#define IMX290_REGHOLD 0x3001
#define IMX290_XMSTA 0x3002
#define IMX290_FLIP_WINMODE 0x3007
#define IMX290_FR_FDG_SEL 0x3009
#define IMX290_BLKLEVEL_LOW 0x300a
#define IMX290_BLKLEVEL_HIGH 0x300b
@@ -107,6 +108,8 @@ struct imx290 {
struct v4l2_ctrl *pixel_rate;
struct v4l2_ctrl *hblank;
struct v4l2_ctrl *vblank;
struct v4l2_ctrl *hflip;
struct v4l2_ctrl *vflip;
struct v4l2_ctrl *exposure;
struct mutex lock;
@@ -600,6 +603,7 @@ static int imx290_set_ctrl(struct v4l2_ctrl *ctrl)
struct imx290 *imx290 = container_of(ctrl->handler,
struct imx290, ctrls);
int ret = 0;
u8 val;
/* V4L2 controls values will be applied only when power is already up */
if (!pm_runtime_get_if_in_use(imx290->dev))
@@ -618,6 +622,16 @@ static int imx290_set_ctrl(struct v4l2_ctrl *ctrl)
case V4L2_CID_VBLANK:
ret = imx290_set_vmax(imx290, ctrl->val);
break;
case V4L2_CID_HFLIP:
case V4L2_CID_VFLIP:
/* WINMODE is in bits [6:4], so need to read-modify-write */
ret = imx290_read_reg(imx290, IMX290_FLIP_WINMODE, &val);
if (ret)
break;
val &= ~0x03;
val |= imx290->vflip->val | (imx290->hflip->val << 1);
ret = imx290_write_reg(imx290, IMX290_FLIP_WINMODE, val);
break;
case V4L2_CID_TEST_PATTERN:
if (ctrl->val) {
imx290_write_reg(imx290, IMX290_BLKLEVEL_LOW, 0x00);
@@ -924,6 +938,9 @@ static int imx290_set_stream(struct v4l2_subdev *sd, int enable)
imx290_stop_streaming(imx290);
pm_runtime_put(imx290->dev);
}
/* vflip and hflip cannot change during streaming */
__v4l2_ctrl_grab(imx290->vflip, enable);
__v4l2_ctrl_grab(imx290->hflip, enable);
unlock_and_return:
@@ -1217,6 +1234,11 @@ static int imx290_probe(struct i2c_client *client)
IMX290_EXPOSURE_STEP,
mode->vmax - 4);
imx290->hflip = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
V4L2_CID_HFLIP, 0, 1, 1, 0);
imx290->vflip = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
V4L2_CID_VFLIP, 0, 1, 1, 0);
imx290->link_freq =
v4l2_ctrl_new_int_menu(&imx290->ctrls, &imx290_ctrl_ops,
V4L2_CID_LINK_FREQ,