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openwrt/target/linux/bcm27xx/patches-6.6/950-0502-media-i2c-imx219-fix-binning-and-rate_factor-for-480.patch
Álvaro Fernández Rojas 8c405cdccc bcm27xx: add 6.6 kernel patches 
The patches were generated from the RPi repo with the following command:
git format-patch v6.6.34..rpi-6.1.y

Some patches needed rebasing and, as usual, the applied and reverted, wireless
drivers, Github workflows, READMEs and defconfigs patches were removed.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2024-06-18 18:52:49 +02:00

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From 24e8a7d7181be45e0d67335f05bf0773fe6ad261 Mon Sep 17 00:00:00 2001
From: Vinay Varma <varmavinaym@gmail.com>
Date: Fri, 22 Sep 2023 18:17:42 +0100
Subject: [PATCH 0502/1085] media: i2c: imx219: fix binning and rate_factor for
480p and 1232p
At a high FPS with RAW10, there is frame corruption for 480p because the
rate_factor of 2 is used with the normal 2x2 bining [1]. This commit
ties the rate_factor to the selected binning mode. For the 480p mode,
analog 2x2 binning mode with a rate_factor of 2 is always used. For the
1232p mode the normal 2x2 binning mode is used for RAW10 while analog
2x2 binning mode is used for RAW8.
[1] raspberrypi#5493
Signed-off-by: Vinay Varma <varmavinaym@gmail.com>
Reworked due to upstream changes
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
drivers/media/i2c/imx219.c | 144 +++++++++++++++++++++++++++----------
1 file changed, 105 insertions(+), 39 deletions(-)
--- a/drivers/media/i2c/imx219.c
+++ b/drivers/media/i2c/imx219.c
@@ -104,8 +104,8 @@
/* Binning Mode */
#define IMX219_REG_BINNING_MODE CCI_REG16(0x0174)
#define IMX219_BINNING_NONE 0x0000
-#define IMX219_BINNING_2X2 0x0101
-#define IMX219_BINNING_2X2_ANALOG 0x0303
+#define IMX219_BINNING_2X2_NORMAL 0x0101
+#define IMX219_BINNING_2X2_SPECIAL 0x0303
#define IMX219_REG_CSI_DATA_FORMAT_A CCI_REG16(0x018c)
@@ -171,6 +171,18 @@ enum pad_types {
NUM_PADS
};
+enum binning_mode {
+ BINNING_NONE,
+ BINNING_NORMAL_2x2,
+ BINNING_SPECIAL_2x2,
+};
+
+enum binning_bit_depths {
+ BINNING_IDX_8_BIT,
+ BINNING_IDX_10_BIT,
+ BINNING_IDX_MAX
+};
+
struct imx219_reg {
u16 address;
u8 val;
@@ -197,11 +209,8 @@ struct imx219_mode {
/* Default register values */
struct imx219_reg_list reg_list;
- /* 2x2 binning is used */
- bool binning;
-
- /* Relative pixel clock rate factor for the mode. */
- unsigned int rate_factor;
+ /* binning mode based on format code */
+ enum binning_mode binning[BINNING_IDX_MAX];
};
static const struct cci_reg_sequence imx219_common_regs[] = {
@@ -406,8 +415,10 @@ static const struct imx219_mode supporte
.num_of_regs = ARRAY_SIZE(mode_3280x2464_regs),
.regs = mode_3280x2464_regs,
},
- .binning = false,
- .rate_factor = 1,
+ .binning = {
+ [BINNING_IDX_8_BIT] = BINNING_NONE,
+ [BINNING_IDX_10_BIT] = BINNING_NONE,
+ },
},
{
/* 1080P 30fps cropped */
@@ -424,8 +435,10 @@ static const struct imx219_mode supporte
.num_of_regs = ARRAY_SIZE(mode_1920_1080_regs),
.regs = mode_1920_1080_regs,
},
- .binning = false,
- .rate_factor = 1,
+ .binning = {
+ [BINNING_IDX_8_BIT] = BINNING_NONE,
+ [BINNING_IDX_10_BIT] = BINNING_NONE,
+ },
},
{
/* 2x2 binned 30fps mode */
@@ -442,8 +455,10 @@ static const struct imx219_mode supporte
.num_of_regs = ARRAY_SIZE(mode_1640_1232_regs),
.regs = mode_1640_1232_regs,
},
- .binning = true,
- .rate_factor = 1,
+ .binning = {
+ [BINNING_IDX_8_BIT] = BINNING_SPECIAL_2x2,
+ [BINNING_IDX_10_BIT] = BINNING_NORMAL_2x2,
+ },
},
{
/* 640x480 30fps mode */
@@ -460,12 +475,10 @@ static const struct imx219_mode supporte
.num_of_regs = ARRAY_SIZE(mode_640_480_regs),
.regs = mode_640_480_regs,
},
- .binning = true,
- /*
- * This mode uses a special 2x2 binning that doubles the
- * internal pixel clock rate.
- */
- .rate_factor = 2,
+ .binning = {
+ [BINNING_IDX_8_BIT] = BINNING_SPECIAL_2x2,
+ [BINNING_IDX_10_BIT] = BINNING_SPECIAL_2x2,
+ },
},
};
@@ -523,12 +536,64 @@ static u32 imx219_get_format_code(struct
return imx219_mbus_formats[i];
}
+static int imx219_resolve_binning(struct imx219 *imx219,
+ const struct v4l2_mbus_framefmt *format,
+ enum binning_mode *binning)
+{
+ u32 fmt;
+
+ if (format)
+ fmt = format->code;
+ else
+ fmt = MEDIA_BUS_FMT_SRGGB10_1X10;
+
+ switch (fmt) {
+ case MEDIA_BUS_FMT_SRGGB8_1X8:
+ case MEDIA_BUS_FMT_SGRBG8_1X8:
+ case MEDIA_BUS_FMT_SGBRG8_1X8:
+ case MEDIA_BUS_FMT_SBGGR8_1X8:
+ *binning = imx219->mode->binning[BINNING_IDX_8_BIT];
+ return 0;
+
+ case MEDIA_BUS_FMT_SRGGB10_1X10:
+ case MEDIA_BUS_FMT_SGRBG10_1X10:
+ case MEDIA_BUS_FMT_SGBRG10_1X10:
+ case MEDIA_BUS_FMT_SBGGR10_1X10:
+ *binning = imx219->mode->binning[BINNING_IDX_10_BIT];
+ return 0;
+ }
+ return -EINVAL;
+}
+
+static int imx219_get_rate_factor(struct imx219 *imx219,
+ const struct v4l2_mbus_framefmt *format)
+{
+ enum binning_mode binning = BINNING_NONE;
+ int ret;
+
+ ret = imx219_resolve_binning(imx219, format, &binning);
+ if (ret < 0)
+ return ret;
+
+ switch (binning) {
+ case BINNING_NONE:
+ case BINNING_NORMAL_2x2:
+ return 1;
+ case BINNING_SPECIAL_2x2:
+ return 2;
+ }
+ return -EINVAL;
+}
+
static int imx219_set_ctrl(struct v4l2_ctrl *ctrl)
{
struct imx219 *imx219 =
container_of(ctrl->handler, struct imx219, ctrl_handler);
struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
int ret = 0;
+ const struct v4l2_mbus_framefmt *format;
+ struct v4l2_subdev_state *state;
+ int rate_factor;
if (ctrl->id == V4L2_CID_VBLANK) {
int exposure_max, exposure_def;
@@ -550,6 +615,10 @@ static int imx219_set_ctrl(struct v4l2_c
if (pm_runtime_get_if_in_use(&client->dev) == 0)
return 0;
+ state = v4l2_subdev_get_locked_active_state(&imx219->sd);
+ format = v4l2_subdev_get_pad_format(&imx219->sd, state, 0);
+ rate_factor = imx219_get_rate_factor(imx219, format);
+
switch (ctrl->id) {
case V4L2_CID_ANALOGUE_GAIN:
cci_write(imx219->regmap, IMX219_REG_ANALOG_GAIN,
@@ -557,7 +626,7 @@ static int imx219_set_ctrl(struct v4l2_c
break;
case V4L2_CID_EXPOSURE:
cci_write(imx219->regmap, IMX219_REG_EXPOSURE,
- ctrl->val / imx219->mode->rate_factor, &ret);
+ ctrl->val / rate_factor, &ret);
break;
case V4L2_CID_DIGITAL_GAIN:
cci_write(imx219->regmap, IMX219_REG_DIGITAL_GAIN,
@@ -574,7 +643,7 @@ static int imx219_set_ctrl(struct v4l2_c
break;
case V4L2_CID_VBLANK:
cci_write(imx219->regmap, IMX219_REG_VTS,
- (imx219->mode->height + ctrl->val) / imx219->mode->rate_factor, &ret);
+ (imx219->mode->height + ctrl->val) / rate_factor, &ret);
break;
case V4L2_CID_HBLANK:
cci_write(imx219->regmap, IMX219_REG_HTS,
@@ -715,10 +784,11 @@ static int imx219_enum_frame_size(struct
return 0;
}
-static unsigned long imx219_get_pixel_rate(struct imx219 *imx219)
+static unsigned long imx219_get_pixel_rate(struct imx219 *imx219,
+ const struct v4l2_mbus_framefmt *format)
{
return ((imx219->lanes == 2) ? IMX219_PIXEL_RATE :
- IMX219_PIXEL_RATE_4LANE) * imx219->mode->rate_factor;
+ IMX219_PIXEL_RATE_4LANE) * imx219_get_rate_factor(imx219, format);
}
static int imx219_set_pad_format(struct v4l2_subdev *sd,
@@ -781,7 +851,7 @@ static int imx219_set_pad_format(struct
__v4l2_ctrl_s_ctrl(imx219->hblank, hblank);
/* Scale the pixel rate based on the mode specific factor */
- pixel_rate = imx219_get_pixel_rate(imx219);
+ pixel_rate = imx219_get_pixel_rate(imx219, &fmt->format);
__v4l2_ctrl_modify_range(imx219->pixel_rate, pixel_rate,
pixel_rate, 1, pixel_rate);
}
@@ -819,24 +889,20 @@ static int imx219_set_framefmt(struct im
static int imx219_set_binning(struct imx219 *imx219,
const struct v4l2_mbus_framefmt *format)
{
- if (!imx219->mode->binning)
+ enum binning_mode binning = BINNING_NONE;
+
+ imx219_resolve_binning(imx219, format, &binning);
+
+ switch (binning) {
+ case BINNING_NONE:
return cci_write(imx219->regmap, IMX219_REG_BINNING_MODE,
IMX219_BINNING_NONE, NULL);
-
- switch (format->code) {
- case MEDIA_BUS_FMT_SRGGB8_1X8:
- case MEDIA_BUS_FMT_SGRBG8_1X8:
- case MEDIA_BUS_FMT_SGBRG8_1X8:
- case MEDIA_BUS_FMT_SBGGR8_1X8:
+ case BINNING_NORMAL_2x2:
return cci_write(imx219->regmap, IMX219_REG_BINNING_MODE,
- IMX219_BINNING_2X2_ANALOG, NULL);
-
- case MEDIA_BUS_FMT_SRGGB10_1X10:
- case MEDIA_BUS_FMT_SGRBG10_1X10:
- case MEDIA_BUS_FMT_SGBRG10_1X10:
- case MEDIA_BUS_FMT_SBGGR10_1X10:
+ IMX219_BINNING_2X2_NORMAL, NULL);
+ case BINNING_SPECIAL_2x2:
return cci_write(imx219->regmap, IMX219_REG_BINNING_MODE,
- IMX219_BINNING_2X2, NULL);
+ IMX219_BINNING_2X2_SPECIAL, NULL);
}
return -EINVAL;
@@ -1158,7 +1224,7 @@ static int imx219_init_controls(struct i
return ret;
/* By default, PIXEL_RATE is read only */
- pixel_rate = imx219_get_pixel_rate(imx219);
+ pixel_rate = imx219_get_pixel_rate(imx219, NULL);
imx219->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
V4L2_CID_PIXEL_RATE,
pixel_rate, pixel_rate, 1,
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