[PATCH v8 3/4] media: i2c: imx334: support lower bandwidth mode
From: shravan kumar
Date: Fri Jan 06 2023 - 02:30:14 EST
From: Shravan Chippa <shravan.chippa@xxxxxxxxxxxxx>
Some platforms may not be capable of supporting the bandwidth
required for 12 bit or 3840x2160@60 resolutions.
Add support for dynamically selecting 10 bit and 1920x1080@30
resolutions while leaving the existing configuration as default
CC: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
Signed-off-by: Prakash Battu <Prakash.Battu@xxxxxxxxxxxxx>
Signed-off-by: Shravan Chippa <shravan.chippa@xxxxxxxxxxxxx>
---
drivers/media/i2c/imx334.c | 300 +++++++++++++++++++++++++++++++++----
1 file changed, 274 insertions(+), 26 deletions(-)
diff --git a/drivers/media/i2c/imx334.c b/drivers/media/i2c/imx334.c
index a4549d194cae..0315e1c9541d 100644
--- a/drivers/media/i2c/imx334.c
+++ b/drivers/media/i2c/imx334.c
@@ -79,7 +79,6 @@ struct imx334_reg_list {
* struct imx334_mode - imx334 sensor mode structure
* @width: Frame width
* @height: Frame height
- * @code: Format code
* @hblank: Horizontal blanking in lines
* @vblank: Vertical blanking in lines
* @vblank_min: Minimal vertical blanking in lines
@@ -91,7 +90,6 @@ struct imx334_reg_list {
struct imx334_mode {
u32 width;
u32 height;
- u32 code;
u32 hblank;
u32 vblank;
u32 vblank_min;
@@ -119,6 +117,7 @@ struct imx334_mode {
* @vblank: Vertical blanking in lines
* @cur_mode: Pointer to current selected sensor mode
* @mutex: Mutex for serializing sensor controls
+ * @cur_code: current selected format code
* @streaming: Flag indicating streaming state
*/
struct imx334 {
@@ -140,6 +139,7 @@ struct imx334 {
u32 vblank;
const struct imx334_mode *cur_mode;
struct mutex mutex;
+ u32 cur_code;
bool streaming;
};
@@ -147,6 +147,169 @@ static const s64 link_freq[] = {
IMX334_LINK_FREQ,
};
+/* Sensor mode registers */
+static const struct imx334_reg mode_1920x1080_regs[] = {
+ {0x3000, 0x01},
+ {0x3018, 0x04},
+ {0x3030, 0xCA},
+ {0x3031, 0x08},
+ {0x3032, 0x00},
+ {0x3034, 0x4C},
+ {0x3035, 0x04},
+ {0x302C, 0xF0},
+ {0x302D, 0x03},
+ {0x302E, 0x80},
+ {0x302F, 0x07},
+ {0x3074, 0xCC},
+ {0x3075, 0x02},
+ {0x308E, 0xCD},
+ {0x308F, 0x02},
+ {0x3076, 0x38},
+ {0x3077, 0x04},
+ {0x3090, 0x38},
+ {0x3091, 0x04},
+ {0x3308, 0x38},
+ {0x3309, 0x04},
+ {0x30C6, 0x00},
+ {0x30C7, 0x00},
+ {0x30CE, 0x00},
+ {0x30CF, 0x00},
+ {0x30D8, 0x18},
+ {0x30D9, 0x0A},
+ {0x304C, 0x00},
+ {0x304E, 0x00},
+ {0x304F, 0x00},
+ {0x3050, 0x00},
+ {0x30B6, 0x00},
+ {0x30B7, 0x00},
+ {0x3116, 0x08},
+ {0x3117, 0x00},
+ {0x31A0, 0x20},
+ {0x31A1, 0x0F},
+ {0x300C, 0x3B},
+ {0x300D, 0x29},
+ {0x314C, 0x29},
+ {0x314D, 0x01},
+ {0x315A, 0x06},
+ {0x3168, 0xA0},
+ {0x316A, 0x7E},
+ {0x319E, 0x02},
+ {0x3199, 0x00},
+ {0x319D, 0x00},
+ {0x31DD, 0x03},
+ {0x3300, 0x00},
+ {0x341C, 0xFF},
+ {0x341D, 0x01},
+ {0x3A01, 0x03},
+ {0x3A18, 0x7F},
+ {0x3A19, 0x00},
+ {0x3A1A, 0x37},
+ {0x3A1B, 0x00},
+ {0x3A1C, 0x37},
+ {0x3A1D, 0x00},
+ {0x3A1E, 0xF7},
+ {0x3A1F, 0x00},
+ {0x3A20, 0x3F},
+ {0x3A21, 0x00},
+ {0x3A20, 0x6F},
+ {0x3A21, 0x00},
+ {0x3A20, 0x3F},
+ {0x3A21, 0x00},
+ {0x3A20, 0x5F},
+ {0x3A21, 0x00},
+ {0x3A20, 0x2F},
+ {0x3A21, 0x00},
+ {0x3078, 0x02},
+ {0x3079, 0x00},
+ {0x307A, 0x00},
+ {0x307B, 0x00},
+ {0x3080, 0x02},
+ {0x3081, 0x00},
+ {0x3082, 0x00},
+ {0x3083, 0x00},
+ {0x3088, 0x02},
+ {0x3094, 0x00},
+ {0x3095, 0x00},
+ {0x3096, 0x00},
+ {0x309B, 0x02},
+ {0x309C, 0x00},
+ {0x309D, 0x00},
+ {0x309E, 0x00},
+ {0x30A4, 0x00},
+ {0x30A5, 0x00},
+ {0x3288, 0x21},
+ {0x328A, 0x02},
+ {0x3414, 0x05},
+ {0x3416, 0x18},
+ {0x35AC, 0x0E},
+ {0x3648, 0x01},
+ {0x364A, 0x04},
+ {0x364C, 0x04},
+ {0x3678, 0x01},
+ {0x367C, 0x31},
+ {0x367E, 0x31},
+ {0x3708, 0x02},
+ {0x3714, 0x01},
+ {0x3715, 0x02},
+ {0x3716, 0x02},
+ {0x3717, 0x02},
+ {0x371C, 0x3D},
+ {0x371D, 0x3F},
+ {0x372C, 0x00},
+ {0x372D, 0x00},
+ {0x372E, 0x46},
+ {0x372F, 0x00},
+ {0x3730, 0x89},
+ {0x3731, 0x00},
+ {0x3732, 0x08},
+ {0x3733, 0x01},
+ {0x3734, 0xFE},
+ {0x3735, 0x05},
+ {0x375D, 0x00},
+ {0x375E, 0x00},
+ {0x375F, 0x61},
+ {0x3760, 0x06},
+ {0x3768, 0x1B},
+ {0x3769, 0x1B},
+ {0x376A, 0x1A},
+ {0x376B, 0x19},
+ {0x376C, 0x18},
+ {0x376D, 0x14},
+ {0x376E, 0x0F},
+ {0x3776, 0x00},
+ {0x3777, 0x00},
+ {0x3778, 0x46},
+ {0x3779, 0x00},
+ {0x377A, 0x08},
+ {0x377B, 0x01},
+ {0x377C, 0x45},
+ {0x377D, 0x01},
+ {0x377E, 0x23},
+ {0x377F, 0x02},
+ {0x3780, 0xD9},
+ {0x3781, 0x03},
+ {0x3782, 0xF5},
+ {0x3783, 0x06},
+ {0x3784, 0xA5},
+ {0x3788, 0x0F},
+ {0x378A, 0xD9},
+ {0x378B, 0x03},
+ {0x378C, 0xEB},
+ {0x378D, 0x05},
+ {0x378E, 0x87},
+ {0x378F, 0x06},
+ {0x3790, 0xF5},
+ {0x3792, 0x43},
+ {0x3794, 0x7A},
+ {0x3796, 0xA1},
+ {0x37B0, 0x37},
+ {0x3E04, 0x0E},
+ {0x30E8, 0x50},
+ {0x30E9, 0x00},
+ {0x3E04, 0x0E},
+ {0x3002, 0x00},
+};
+
/* Sensor mode registers */
static const struct imx334_reg mode_3840x2160_regs[] = {
{0x3000, 0x01},
@@ -263,20 +426,53 @@ static const struct imx334_reg mode_3840x2160_regs[] = {
{0x3A29, 0x00},
};
+static const struct imx334_reg raw10_framefmt_regs[] = {
+ {0x3050, 0x00},
+ {0x319D, 0x00},
+ {0x341C, 0xFF},
+ {0x341D, 0x01},
+};
+
+static const struct imx334_reg raw12_framefmt_regs[] = {
+ {0x3050, 0x01},
+ {0x319D, 0x01},
+ {0x341C, 0x47},
+ {0x341D, 0x00},
+};
+
+static const u32 imx334_mbus_codes[] = {
+ MEDIA_BUS_FMT_SRGGB12_1X12,
+ MEDIA_BUS_FMT_SRGGB10_1X10,
+};
+
/* Supported sensor mode configurations */
-static const struct imx334_mode supported_mode = {
- .width = 3840,
- .height = 2160,
- .hblank = 560,
- .vblank = 2340,
- .vblank_min = 90,
- .vblank_max = 132840,
- .pclk = 594000000,
- .link_freq_idx = 0,
- .code = MEDIA_BUS_FMT_SRGGB12_1X12,
- .reg_list = {
- .num_of_regs = ARRAY_SIZE(mode_3840x2160_regs),
- .regs = mode_3840x2160_regs,
+static const struct imx334_mode supported_modes[] = {
+ {
+ .width = 3840,
+ .height = 2160,
+ .hblank = 560,
+ .vblank = 2340,
+ .vblank_min = 90,
+ .vblank_max = 132840,
+ .pclk = 594000000,
+ .link_freq_idx = 0,
+ .reg_list = {
+ .num_of_regs = ARRAY_SIZE(mode_3840x2160_regs),
+ .regs = mode_3840x2160_regs,
+ },
+ }, {
+ .width = 1920,
+ .height = 1080,
+ .hblank = 280,
+ .vblank = 1170,
+ .vblank_min = 90,
+ .vblank_max = 132840,
+ .pclk = 74250000,
+ .link_freq_idx = 0,
+ .reg_list = {
+ .num_of_regs = ARRAY_SIZE(mode_1920x1080_regs),
+ .regs = mode_1920x1080_regs,
+ },
},
};
@@ -518,6 +714,23 @@ static const struct v4l2_ctrl_ops imx334_ctrl_ops = {
.s_ctrl = imx334_set_ctrl,
};
+static int imx334_get_format_code(struct imx334 *imx334, u32 code)
+{
+ unsigned int i;
+
+ lockdep_assert_held(&imx334->mutex);
+
+ for (i = 0; i < ARRAY_SIZE(imx334_mbus_codes); i++) {
+ if (imx334_mbus_codes[i] == code)
+ break;
+ }
+
+ if (i >= ARRAY_SIZE(imx334_mbus_codes))
+ i = 0;
+
+ return imx334_mbus_codes[i];
+}
+
/**
* imx334_enum_mbus_code() - Enumerate V4L2 sub-device mbus codes
* @sd: pointer to imx334 V4L2 sub-device structure
@@ -530,10 +743,10 @@ static int imx334_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
- if (code->index > 0)
+ if (code->index >= ARRAY_SIZE(imx334_mbus_codes))
return -EINVAL;
- code->code = supported_mode.code;
+ code->code = imx334_mbus_codes[code->index];
return 0;
}
@@ -550,15 +763,21 @@ static int imx334_enum_frame_size(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *fsize)
{
- if (fsize->index > 0)
+ struct imx334 *imx334 = to_imx334(sd);
+ u32 code;
+
+ if (fsize->index >= ARRAY_SIZE(supported_modes))
return -EINVAL;
- if (fsize->code != supported_mode.code)
+ mutex_lock(&imx334->mutex);
+ code = imx334_get_format_code(imx334, fsize->code);
+ mutex_unlock(&imx334->mutex);
+ if (fsize->code != code)
return -EINVAL;
- fsize->min_width = supported_mode.width;
+ fsize->min_width = supported_modes[fsize->index].width;
fsize->max_width = fsize->min_width;
- fsize->min_height = supported_mode.height;
+ fsize->min_height = supported_modes[fsize->index].height;
fsize->max_height = fsize->min_height;
return 0;
@@ -577,7 +796,6 @@ static void imx334_fill_pad_format(struct imx334 *imx334,
{
fmt->format.width = mode->width;
fmt->format.height = mode->height;
- fmt->format.code = mode->code;
fmt->format.field = V4L2_FIELD_NONE;
fmt->format.colorspace = V4L2_COLORSPACE_RAW;
fmt->format.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
@@ -633,7 +851,13 @@ static int imx334_set_pad_format(struct v4l2_subdev *sd,
mutex_lock(&imx334->mutex);
- mode = &supported_mode;
+ fmt->format.code = imx334_get_format_code(imx334, fmt->format.code);
+
+ mode = v4l2_find_nearest_size(supported_modes,
+ ARRAY_SIZE(supported_modes),
+ width, height,
+ fmt->format.width, fmt->format.height);
+
imx334_fill_pad_format(imx334, mode, fmt);
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
@@ -641,7 +865,8 @@ static int imx334_set_pad_format(struct v4l2_subdev *sd,
framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
*framefmt = fmt->format;
- } else {
+ } else if (imx334->cur_mode != mode || imx334->cur_code != fmt->format.code) {
+ imx334->cur_code = fmt->format.code;
ret = imx334_update_controls(imx334, mode);
if (!ret)
imx334->cur_mode = mode;
@@ -666,11 +891,26 @@ static int imx334_init_pad_cfg(struct v4l2_subdev *sd,
struct v4l2_subdev_format fmt = { 0 };
fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
- imx334_fill_pad_format(imx334, &supported_mode, &fmt);
+ imx334_fill_pad_format(imx334, &supported_modes[0], &fmt);
return imx334_set_pad_format(sd, sd_state, &fmt);
}
+static int imx334_set_framefmt(struct imx334 *imx334)
+{
+ switch (imx334->cur_code) {
+ case MEDIA_BUS_FMT_SRGGB10_1X10:
+ return imx334_write_regs(imx334, raw10_framefmt_regs,
+ ARRAY_SIZE(raw10_framefmt_regs));
+
+ case MEDIA_BUS_FMT_SRGGB12_1X12:
+ return imx334_write_regs(imx334, raw12_framefmt_regs,
+ ARRAY_SIZE(raw12_framefmt_regs));
+ }
+
+ return -EINVAL;
+}
+
/**
* imx334_start_streaming() - Start sensor stream
* @imx334: pointer to imx334 device
@@ -691,6 +931,13 @@ static int imx334_start_streaming(struct imx334 *imx334)
return ret;
}
+ ret = imx334_set_framefmt(imx334);
+ if (ret) {
+ dev_err(imx334->dev, "%s failed to set frame format: %d\n",
+ __func__, ret);
+ return ret;
+ }
+
/* Setup handler will write actual exposure and gain */
ret = __v4l2_ctrl_handler_setup(imx334->sd.ctrl_handler);
if (ret) {
@@ -1061,7 +1308,8 @@ static int imx334_probe(struct i2c_client *client)
}
/* Set default mode to max resolution */
- imx334->cur_mode = &supported_mode;
+ imx334->cur_mode = &supported_modes[0];
+ imx334->cur_code = imx334_mbus_codes[0];
imx334->vblank = imx334->cur_mode->vblank;
ret = imx334_init_controls(imx334);
--
2.34.1