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Subject: media: i2c: gc2145: addition of RAW8 formats support
Author: Alain Volmat <alain.vol...@foss.st.com>
Date: Tue Jun 25 10:29:54 2024 +0200
Adds support for RAW8 formats (BGGR/RGGB/RBRG/BRBG).
Signed-off-by: Alain Volmat <alain.vol...@foss.st.com>
Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
[hverkuil: fix typo: colospace -> colorspace]
drivers/media/i2c/gc2145.c | 75 +++++++++++++++++++++++++++++++++++++++++-----
1 file changed, 67 insertions(+), 8 deletions(-)
---
diff --git a/drivers/media/i2c/gc2145.c b/drivers/media/i2c/gc2145.c
index bef7b0e056a8..ef631c86080c 100644
--- a/drivers/media/i2c/gc2145.c
+++ b/drivers/media/i2c/gc2145.c
@@ -542,45 +542,82 @@ static const struct gc2145_mode supported_modes[] = {
/**
* struct gc2145_format - GC2145 pixel format description
* @code: media bus (MBUS) associated code
+ * @colorspace: V4L2 colorspace
* @datatype: MIPI CSI2 data type
* @output_fmt: GC2145 output format
* @switch_bit: GC2145 first/second switch
+ * @row_col_switch: GC2145 switch row and/or column
*/
struct gc2145_format {
unsigned int code;
+ unsigned int colorspace;
unsigned char datatype;
unsigned char output_fmt;
bool switch_bit;
+ unsigned char row_col_switch;
};
/* All supported formats */
static const struct gc2145_format supported_formats[] = {
{
.code = MEDIA_BUS_FMT_UYVY8_1X16,
+ .colorspace = V4L2_COLORSPACE_SRGB,
.datatype = MIPI_CSI2_DT_YUV422_8B,
.output_fmt = 0x00,
},
{
.code = MEDIA_BUS_FMT_VYUY8_1X16,
+ .colorspace = V4L2_COLORSPACE_SRGB,
.datatype = MIPI_CSI2_DT_YUV422_8B,
.output_fmt = 0x01,
},
{
.code = MEDIA_BUS_FMT_YUYV8_1X16,
+ .colorspace = V4L2_COLORSPACE_SRGB,
.datatype = MIPI_CSI2_DT_YUV422_8B,
.output_fmt = 0x02,
},
{
.code = MEDIA_BUS_FMT_YVYU8_1X16,
+ .colorspace = V4L2_COLORSPACE_SRGB,
.datatype = MIPI_CSI2_DT_YUV422_8B,
.output_fmt = 0x03,
},
{
.code = MEDIA_BUS_FMT_RGB565_1X16,
+ .colorspace = V4L2_COLORSPACE_SRGB,
.datatype = MIPI_CSI2_DT_RGB565,
.output_fmt = 0x06,
.switch_bit = true,
},
+ {
+ .code = MEDIA_BUS_FMT_SGRBG8_1X8,
+ .colorspace = V4L2_COLORSPACE_RAW,
+ .datatype = MIPI_CSI2_DT_RAW8,
+ .output_fmt = 0x17,
+ .row_col_switch = GC2145_SYNC_MODE_COL_SWITCH,
+ },
+ {
+ .code = MEDIA_BUS_FMT_SRGGB8_1X8,
+ .colorspace = V4L2_COLORSPACE_RAW,
+ .datatype = MIPI_CSI2_DT_RAW8,
+ .output_fmt = 0x17,
+ .row_col_switch = GC2145_SYNC_MODE_COL_SWITCH |
GC2145_SYNC_MODE_ROW_SWITCH,
+ },
+ {
+ .code = MEDIA_BUS_FMT_SBGGR8_1X8,
+ .colorspace = V4L2_COLORSPACE_RAW,
+ .datatype = MIPI_CSI2_DT_RAW8,
+ .output_fmt = 0x17,
+ .row_col_switch = 0,
+ },
+ {
+ .code = MEDIA_BUS_FMT_SGBRG8_1X8,
+ .colorspace = V4L2_COLORSPACE_RAW,
+ .datatype = MIPI_CSI2_DT_RAW8,
+ .output_fmt = 0x17,
+ .row_col_switch = GC2145_SYNC_MODE_ROW_SWITCH,
+ },
};
struct gc2145_ctrls {
@@ -641,7 +678,8 @@ gc2145_get_format_code(struct gc2145 *gc2145, u32 code)
static void gc2145_update_pad_format(struct gc2145 *gc2145,
const struct gc2145_mode *mode,
- struct v4l2_mbus_framefmt *fmt, u32 code)
+ struct v4l2_mbus_framefmt *fmt, u32 code,
+ u32 colorspace)
{
fmt->code = code;
fmt->width = mode->width;
@@ -663,7 +701,8 @@ static int gc2145_init_state(struct v4l2_subdev *sd,
/* Initialize pad format */
format = v4l2_subdev_state_get_format(state, 0);
gc2145_update_pad_format(gc2145, &supported_modes[0], format,
- MEDIA_BUS_FMT_RGB565_1X16);
+ MEDIA_BUS_FMT_RGB565_1X16,
+ V4L2_COLORSPACE_SRGB);
/* Initialize crop rectangle. */
crop = v4l2_subdev_state_get_crop(state, 0);
@@ -754,7 +793,13 @@ static int gc2145_set_pad_format(struct v4l2_subdev *sd,
width, height,
fmt->format.width, fmt->format.height);
- gc2145_update_pad_format(gc2145, mode, &fmt->format, gc2145_fmt->code);
+ /* In RAW mode, VGA is not possible so use 720p instead */
+ if (gc2145_fmt->colorspace == V4L2_COLORSPACE_RAW &&
+ mode == &supported_modes[GC2145_MODE_640X480])
+ mode = &supported_modes[GC2145_MODE_1280X720];
+
+ gc2145_update_pad_format(gc2145, mode, &fmt->format, gc2145_fmt->code,
+ gc2145_fmt->colorspace);
framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad);
if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
gc2145->mode = mode;
@@ -811,7 +856,11 @@ static int gc2145_config_mipi_mode(struct gc2145 *gc2145,
* For RAW8, LWC = image width
* For RAW10, LWC = image width * 1.25
*/
- lwc = gc2145->mode->width * 2;
+ if (gc2145_format->colorspace != V4L2_COLORSPACE_RAW)
+ lwc = gc2145->mode->width * 2;
+ else
+ lwc = gc2145->mode->width;
+
cci_write(gc2145->regmap, GC2145_REG_LWC_HIGH, lwc >> 8, &ret);
cci_write(gc2145->regmap, GC2145_REG_LWC_LOW, lwc & 0xff, &ret);
@@ -821,10 +870,14 @@ static int gc2145_config_mipi_mode(struct gc2145 *gc2145,
* 1280x720 / 1600x1200 (aka no scaler) non RAW: 0x0001
* 1600x1200 RAW: 0x0190
*/
- if (gc2145->mode->width == 1280 || gc2145->mode->width == 1600)
- fifo_full_lvl = 0x0001;
- else
+ if (gc2145_format->colorspace != V4L2_COLORSPACE_RAW) {
+ if (gc2145->mode->width == 1280 || gc2145->mode->width == 1600)
+ fifo_full_lvl = 0x0001;
+ else
+ fifo_full_lvl = 0x0190;
+ } else {
fifo_full_lvl = 0x0190;
+ }
cci_write(gc2145->regmap, GC2145_REG_FIFO_FULL_LVL_HIGH,
fifo_full_lvl >> 8, &ret);
@@ -835,7 +888,9 @@ static int gc2145_config_mipi_mode(struct gc2145 *gc2145,
* Set the FIFO gate mode / MIPI wdiv set:
* 0xf1 in case of RAW mode and 0xf0 otherwise
*/
- cci_write(gc2145->regmap, GC2145_REG_FIFO_GATE_MODE, 0xf0, &ret);
+ cci_write(gc2145->regmap, GC2145_REG_FIFO_GATE_MODE,
+ gc2145_format->colorspace == V4L2_COLORSPACE_RAW ?
+ 0xf1 : 0xf0, &ret);
/* Set the MIPI data type */
cci_write(gc2145->regmap, GC2145_REG_MIPI_DT,
@@ -883,6 +938,10 @@ static int gc2145_start_streaming(struct gc2145 *gc2145,
GC2145_BYPASS_MODE_SWITCH,
gc2145_format->switch_bit ? GC2145_BYPASS_MODE_SWITCH
: 0, &ret);
+ cci_update_bits(gc2145->regmap, GC2145_REG_SYNC_MODE,
+ GC2145_SYNC_MODE_COL_SWITCH |
+ GC2145_SYNC_MODE_ROW_SWITCH,
+ gc2145_format->row_col_switch, &ret);
if (ret) {
dev_err(&client->dev, "%s failed to write regs\n", __func__);
goto err_rpm_put;
