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media: i2c: imx290: Convert HMAX setting into V4L2_CID_HBLANK

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Userspace needs to know HBLANK if it is to work out exposure times
and frame rates, therefore convert it to map onto V4L2_CID_HBLANK

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
This commit is contained in:
Dave Stevenson
2020-06-11 14:36:40 +01:00
committed by popcornmix
parent 92769a095d
commit 471e0029e9
1 changed files with 44 additions and 22 deletions
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66
drivers/media/i2c/imx290.c
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@@ -40,6 +40,9 @@ enum imx290_clk_index {
#define IMX290_GAIN 0x3014
#define IMX290_HMAX_LOW 0x301c
#define IMX290_HMAX_HIGH 0x301d
#define IMX290_HMAX_MIN_2LANE 4400 /* Min of 4400 pixels = 30fps */
#define IMX290_HMAX_MIN_4LANE 2200 /* Min of 2200 pixels = 60fps */
#define IMX290_HMAX_MAX 0xffff
#define IMX290_PGCTRL 0x308c
#define IMX290_PHY_LANE_NUM 0x3407
#define IMX290_CSI_LANE_MODE 0x3443
@@ -82,6 +85,7 @@ struct imx290 {
struct regmap *regmap;
u8 nlanes;
u8 bpp;
u16 hmax_min;
struct v4l2_subdev sd;
struct media_pad pad;
@@ -94,6 +98,7 @@ struct imx290 {
struct v4l2_ctrl_handler ctrls;
struct v4l2_ctrl *link_freq;
struct v4l2_ctrl *pixel_rate;
struct v4l2_ctrl *hblank;
struct mutex lock;
};
@@ -518,6 +523,26 @@ static int imx290_set_gain(struct imx290 *imx290, u32 value)
return ret;
}
static int imx290_set_hmax(struct imx290 *imx290, u32 val)
{
u32 hmax = val + imx290->current_mode->width;
int ret;
ret = imx290_write_reg(imx290, IMX290_HMAX_LOW, (hmax & 0xff));
if (ret) {
dev_err(imx290->dev, "Error setting HMAX register\n");
return ret;
}
ret = imx290_write_reg(imx290, IMX290_HMAX_HIGH, ((hmax >> 8) & 0xff));
if (ret) {
dev_err(imx290->dev, "Error setting HMAX register\n");
return ret;
}
return 0;
}
/* Stop streaming */
static int imx290_stop_streaming(struct imx290 *imx290)
{
@@ -546,6 +571,9 @@ static int imx290_set_ctrl(struct v4l2_ctrl *ctrl)
case V4L2_CID_GAIN:
ret = imx290_set_gain(imx290, ctrl->val);
break;
case V4L2_CID_HBLANK:
ret = imx290_set_hmax(imx290, ctrl->val);
break;
case V4L2_CID_TEST_PATTERN:
if (ctrl->val) {
imx290_write_reg(imx290, IMX290_BLKLEVEL_LOW, 0x00);
@@ -702,6 +730,12 @@ static int imx290_set_fmt(struct v4l2_subdev *sd,
if (imx290->pixel_rate)
__v4l2_ctrl_s_ctrl_int64(imx290->pixel_rate,
imx290_calc_pixel_rate(imx290));
if (imx290->hblank)
__v4l2_ctrl_modify_range(imx290->hblank,
imx290->hmax_min - mode->width,
IMX290_HMAX_MAX - mode->width,
1, mode->hmax - mode->width);
}
*format = fmt->format;
@@ -756,25 +790,6 @@ static int imx290_write_current_format(struct imx290 *imx290)
return 0;
}
static int imx290_set_hmax(struct imx290 *imx290, u32 val)
{
int ret;
ret = imx290_write_reg(imx290, IMX290_HMAX_LOW, (val & 0xff));
if (ret) {
dev_err(imx290->dev, "Error setting HMAX register\n");
return ret;
}
ret = imx290_write_reg(imx290, IMX290_HMAX_HIGH, ((val >> 8) & 0xff));
if (ret) {
dev_err(imx290->dev, "Error setting HMAX register\n");
return ret;
}
return 0;
}
/* Start streaming */
static int imx290_start_streaming(struct imx290 *imx290)
{
@@ -813,9 +828,6 @@ static int imx290_start_streaming(struct imx290 *imx290)
dev_err(imx290->dev, "Could not set current mode\n");
return ret;
}
ret = imx290_set_hmax(imx290, imx290->current_mode->hmax);
if (ret < 0)
return ret;
/* Apply customized values from user */
ret = v4l2_ctrl_handler_setup(imx290->sd.ctrl_handler);
@@ -1014,6 +1026,7 @@ static int imx290_probe(struct i2c_client *client)
struct v4l2_fwnode_endpoint ep = {
.bus_type = V4L2_MBUS_CSI2_DPHY
};
const struct imx290_mode *mode;
struct imx290 *imx290;
s64 fq;
int ret;
@@ -1052,6 +1065,8 @@ static int imx290_probe(struct i2c_client *client)
ret = -EINVAL;
goto free_err;
}
imx290->hmax_min = (imx290->nlanes == 2) ? IMX290_HMAX_MIN_2LANE :
IMX290_HMAX_MIN_4LANE;
dev_dbg(dev, "Using %u data lanes\n", imx290->nlanes);
@@ -1126,6 +1141,13 @@ static int imx290_probe(struct i2c_client *client)
v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
V4L2_CID_GAIN, 0, 238, 1, 0);
mode = imx290->current_mode;
imx290->hblank = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
V4L2_CID_HBLANK,
imx290->hmax_min - mode->width,
IMX290_HMAX_MAX - mode->width, 1,
mode->hmax - mode->width);
imx290->link_freq =
v4l2_ctrl_new_int_menu(&imx290->ctrls, &imx290_ctrl_ops,
V4L2_CID_LINK_FREQ,