[PATCH 4.19.y-cip 15/40] media: i2c: imx219: Add support for RAW8 bit bayer format


Lad Prabhakar
 

commit 22da1d56e982151e0bdfafe9de6fe94098a51356 upstream.

IMX219 sensor is capable for RAW8/RAW10 modes. This commit adds support
for RAW8 bayer format.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
drivers/media/i2c/imx219.c | 148 +++++++++++++++++++++++++++++--------
1 file changed, 116 insertions(+), 32 deletions(-)

diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c
index f1ae93569542..d94c94c38e75 100644
--- a/drivers/media/i2c/imx219.c
+++ b/drivers/media/i2c/imx219.c
@@ -169,15 +169,12 @@ static const struct imx219_reg mode_3280x2464_regs[] = {
{0x0171, 0x01},
{0x0174, 0x00},
{0x0175, 0x00},
- {0x018c, 0x0a},
- {0x018d, 0x0a},
{0x0301, 0x05},
{0x0303, 0x01},
{0x0304, 0x03},
{0x0305, 0x03},
{0x0306, 0x00},
{0x0307, 0x39},
- {0x0309, 0x0a},
{0x030b, 0x01},
{0x030c, 0x00},
{0x030d, 0x72},
@@ -231,15 +228,12 @@ static const struct imx219_reg mode_1920_1080_regs[] = {
{0x0171, 0x01},
{0x0174, 0x00},
{0x0175, 0x00},
- {0x018c, 0x0a},
- {0x018d, 0x0a},
{0x0301, 0x05},
{0x0303, 0x01},
{0x0304, 0x03},
{0x0305, 0x03},
{0x0306, 0x00},
{0x0307, 0x39},
- {0x0309, 0x0a},
{0x030b, 0x01},
{0x030c, 0x00},
{0x030d, 0x72},
@@ -291,15 +285,12 @@ static const struct imx219_reg mode_1640_1232_regs[] = {
{0x0171, 0x01},
{0x0174, 0x01},
{0x0175, 0x01},
- {0x018c, 0x0a},
- {0x018d, 0x0a},
{0x0301, 0x05},
{0x0303, 0x01},
{0x0304, 0x03},
{0x0305, 0x03},
{0x0306, 0x00},
{0x0307, 0x39},
- {0x0309, 0x0a},
{0x030b, 0x01},
{0x030c, 0x00},
{0x030d, 0x72},
@@ -323,6 +314,18 @@ static const struct imx219_reg mode_1640_1232_regs[] = {
{0x0163, 0x78},
};

+static const struct imx219_reg raw8_framefmt_regs[] = {
+ {0x018c, 0x08},
+ {0x018d, 0x08},
+ {0x0309, 0x08},
+};
+
+static const struct imx219_reg raw10_framefmt_regs[] = {
+ {0x018c, 0x0a},
+ {0x018d, 0x0a},
+ {0x0309, 0x0a},
+};
+
static const char * const imx219_test_pattern_menu[] = {
"Disabled",
"Color Bars",
@@ -349,6 +352,27 @@ static const char * const imx219_supply_name[] = {

#define IMX219_NUM_SUPPLIES ARRAY_SIZE(imx219_supply_name)

+/*
+ * The supported formats.
+ * This table MUST contain 4 entries per format, to cover the various flip
+ * combinations in the order
+ * - no flip
+ * - h flip
+ * - v flip
+ * - h&v flips
+ */
+static const u32 codes[] = {
+ MEDIA_BUS_FMT_SRGGB10_1X10,
+ MEDIA_BUS_FMT_SGRBG10_1X10,
+ MEDIA_BUS_FMT_SGBRG10_1X10,
+ MEDIA_BUS_FMT_SBGGR10_1X10,
+
+ MEDIA_BUS_FMT_SRGGB8_1X8,
+ MEDIA_BUS_FMT_SGRBG8_1X8,
+ MEDIA_BUS_FMT_SGBRG8_1X8,
+ MEDIA_BUS_FMT_SBGGR8_1X8,
+};
+
/*
* Initialisation delay between XCLR low->high and the moment when the sensor
* can start capture (i.e. can leave software stanby) must be not less than:
@@ -414,6 +438,8 @@ struct imx219 {
struct v4l2_subdev sd;
struct media_pad pad;

+ struct v4l2_mbus_framefmt fmt;
+
struct clk *xclk; /* system clock to IMX219 */
u32 xclk_freq;

@@ -520,19 +546,40 @@ static int imx219_write_regs(struct imx219 *imx219,
}

/* Get bayer order based on flip setting. */
-static u32 imx219_get_format_code(struct imx219 *imx219)
+static u32 imx219_get_format_code(struct imx219 *imx219, u32 code)
{
- /*
- * Only one bayer order is supported.
- * It depends on the flip settings.
- */
- static const u32 codes[2][2] = {
- { MEDIA_BUS_FMT_SRGGB10_1X10, MEDIA_BUS_FMT_SGRBG10_1X10, },
- { MEDIA_BUS_FMT_SGBRG10_1X10, MEDIA_BUS_FMT_SBGGR10_1X10, },
- };
+ unsigned int i;

lockdep_assert_held(&imx219->mutex);
- return codes[imx219->vflip->val][imx219->hflip->val];
+
+ for (i = 0; i < ARRAY_SIZE(codes); i++)
+ if (codes[i] == code)
+ break;
+
+ if (i >= ARRAY_SIZE(codes))
+ i = 0;
+
+ i = (i & ~3) | (imx219->vflip->val ? 2 : 0) |
+ (imx219->hflip->val ? 1 : 0);
+
+ return codes[i];
+}
+
+static void imx219_set_default_format(struct imx219 *imx219)
+{
+ struct v4l2_mbus_framefmt *fmt;
+
+ fmt = &imx219->fmt;
+ fmt->code = MEDIA_BUS_FMT_SRGGB10_1X10;
+ fmt->colorspace = V4L2_COLORSPACE_SRGB;
+ fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
+ fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
+ fmt->colorspace,
+ fmt->ycbcr_enc);
+ fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
+ fmt->width = supported_modes[0].width;
+ fmt->height = supported_modes[0].height;
+ fmt->field = V4L2_FIELD_NONE;
}

static int imx219_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
@@ -546,7 +593,8 @@ static int imx219_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
/* Initialize try_fmt */
try_fmt->width = supported_modes[0].width;
try_fmt->height = supported_modes[0].height;
- try_fmt->code = imx219_get_format_code(imx219);
+ try_fmt->code = imx219_get_format_code(imx219,
+ MEDIA_BUS_FMT_SRGGB10_1X10);
try_fmt->field = V4L2_FIELD_NONE;

mutex_unlock(&imx219->mutex);
@@ -649,14 +697,10 @@ static int imx219_enum_mbus_code(struct v4l2_subdev *sd,
{
struct imx219 *imx219 = to_imx219(sd);

- /*
- * Only one bayer order is supported (though it depends on the flip
- * settings)
- */
- if (code->index > 0)
+ if (code->index >= (ARRAY_SIZE(codes) / 4))
return -EINVAL;

- code->code = imx219_get_format_code(imx219);
+ code->code = imx219_get_format_code(imx219, codes[code->index * 4]);

return 0;
}
@@ -670,7 +714,7 @@ static int imx219_enum_frame_size(struct v4l2_subdev *sd,
if (fse->index >= ARRAY_SIZE(supported_modes))
return -EINVAL;

- if (fse->code != imx219_get_format_code(imx219))
+ if (fse->code != imx219_get_format_code(imx219, imx219->fmt.code))
return -EINVAL;

fse->min_width = supported_modes[fse->index].width;
@@ -697,9 +741,7 @@ static void imx219_update_pad_format(struct imx219 *imx219,
{
fmt->format.width = mode->width;
fmt->format.height = mode->height;
- fmt->format.code = imx219_get_format_code(imx219);
fmt->format.field = V4L2_FIELD_NONE;
-
imx219_reset_colorspace(&fmt->format);
}

@@ -711,10 +753,12 @@ static int __imx219_get_pad_format(struct imx219 *imx219,
struct v4l2_mbus_framefmt *try_fmt =
v4l2_subdev_get_try_format(&imx219->sd, cfg, fmt->pad);
/* update the code which could change due to vflip or hflip: */
- try_fmt->code = imx219_get_format_code(imx219);
+ try_fmt->code = imx219_get_format_code(imx219, try_fmt->code);
fmt->format = *try_fmt;
} else {
imx219_update_pad_format(imx219, imx219->mode, fmt);
+ fmt->format.code = imx219_get_format_code(imx219,
+ imx219->fmt.code);
}

return 0;
@@ -742,11 +786,18 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd,
const struct imx219_mode *mode;
struct v4l2_mbus_framefmt *framefmt;
int exposure_max, exposure_def, hblank;
+ unsigned int i;

mutex_lock(&imx219->mutex);

+ for (i = 0; i < ARRAY_SIZE(codes); i++)
+ if (codes[i] == fmt->format.code)
+ break;
+ if (i >= ARRAY_SIZE(codes))
+ i = 0;
+
/* Bayer order varies with flips */
- fmt->format.code = imx219_get_format_code(imx219);
+ fmt->format.code = imx219_get_format_code(imx219, codes[i]);

mode = v4l2_find_nearest_size(supported_modes,
ARRAY_SIZE(supported_modes),
@@ -756,7 +807,9 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd,
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
framefmt = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
*framefmt = fmt->format;
- } else if (imx219->mode != mode) {
+ } else if (imx219->mode != mode ||
+ imx219->fmt.code != fmt->format.code) {
+ imx219->fmt = fmt->format;
imx219->mode = mode;
/* Update limits and set FPS to default */
__v4l2_ctrl_modify_range(imx219->vblank, IMX219_VBLANK_MIN,
@@ -787,6 +840,27 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd,
return 0;
}

+static int imx219_set_framefmt(struct imx219 *imx219)
+{
+ switch (imx219->fmt.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:
+ return imx219_write_regs(imx219, raw8_framefmt_regs,
+ ARRAY_SIZE(raw8_framefmt_regs));
+
+ case MEDIA_BUS_FMT_SRGGB10_1X10:
+ case MEDIA_BUS_FMT_SGRBG10_1X10:
+ case MEDIA_BUS_FMT_SGBRG10_1X10:
+ case MEDIA_BUS_FMT_SBGGR10_1X10:
+ return imx219_write_regs(imx219, raw10_framefmt_regs,
+ ARRAY_SIZE(raw10_framefmt_regs));
+ }
+
+ return -EINVAL;
+}
+
static int imx219_start_streaming(struct imx219 *imx219)
{
struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
@@ -801,6 +875,13 @@ static int imx219_start_streaming(struct imx219 *imx219)
return ret;
}

+ ret = imx219_set_framefmt(imx219);
+ if (ret) {
+ dev_err(&client->dev, "%s failed to set frame format: %d\n",
+ __func__, ret);
+ return ret;
+ }
+
/* Apply customized values from user */
ret = __v4l2_ctrl_handler_setup(imx219->sd.ctrl_handler);
if (ret)
@@ -1253,6 +1334,9 @@ static int imx219_probe(struct i2c_client *client)
/* Initialize source pad */
imx219->pad.flags = MEDIA_PAD_FL_SOURCE;

+ /* Initialize default format */
+ imx219_set_default_format(imx219);
+
ret = media_entity_pads_init(&imx219->sd.entity, 1, &imx219->pad);
if (ret) {
dev_err(dev, "failed to init entity pads: %d\n", ret);
--
2.17.1

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