* [PATCH v4] media: i2c: imx334: support lower bandwidth mode
@ 2022-09-20 5:10 shravan kumar
2022-09-20 12:14 ` Sakari Ailus
0 siblings, 1 reply; 9+ messages in thread
From: shravan kumar @ 2022-09-20 5:10 UTC (permalink / raw)
To: paul.j.murphy, daniele.alessandrelli, mchehab
Cc: linux-media, linux-kernel, Shravan Chippa, Conor Dooley, Prakash Battu
From: Shravan Chippa <shravan.chippa@microchip.com>
Some platforms may not be capable of supporting the bandwidth
required for 12 bit or 3840x2160 resolutions.
Add support for dynamically selecting 10 bit and 1920x1080
resolutions while leaving the existing configuration as default
CC: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Prakash Battu <Prakash.Battu@microchip.com>
Signed-off-by: Shravan Chippa <shravan.chippa@microchip.com>
---
V3 -> V4
- Make the 12 bit and 3840x2160 as default
- Set bus code SRGGB12 if set format fails
V2 -> V3
- Fixed the warning reported by kernel test robot
V1 -> V2
- Addressed the review comment given by Jacopo Mondi,
Which has bug in imx334_enum_frame_size() loop function,
- Renamed array codes[] to imx334_mbus_codes[]
- Modified supported_modes[] to get higher resolution first
---
drivers/media/i2c/imx334.c | 302 +++++++++++++++++++++++++++++++++----
1 file changed, 276 insertions(+), 26 deletions(-)
diff --git a/drivers/media/i2c/imx334.c b/drivers/media/i2c/imx334.c
index 062125501788..df2f1821569e 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, 0x0A},
+ {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},
@@ -243,20 +406,56 @@ static const struct imx334_reg mode_3840x2160_regs[] = {
{0x3a00, 0x01},
};
+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},
+};
+
+/*
+ * The supported BUS formats.
+ */
+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 = 560,
+ .vblank = 1170,
+ .vblank_min = 90,
+ .vblank_max = 132840,
+ .pclk = 594000000,
+ .link_freq_idx = 0,
+ .reg_list = {
+ .num_of_regs = ARRAY_SIZE(mode_1920x1080_regs),
+ .regs = mode_1920x1080_regs,
+ },
},
};
@@ -506,10 +705,10 @@ 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;
}
@@ -526,15 +725,22 @@ 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)
+ unsigned int i;
+
+ if (fsize->index >= ARRAY_SIZE(supported_modes))
return -EINVAL;
- if (fsize->code != supported_mode.code)
+ for (i = 0; i < ARRAY_SIZE(imx334_mbus_codes); ++i) {
+ if (imx334_mbus_codes[i] == fsize->code)
+ break;
+ }
+
+ if (i == ARRAY_SIZE(imx334_mbus_codes))
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;
@@ -553,7 +759,7 @@ 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.code = imx334->cur_code;
fmt->format.field = V4L2_FIELD_NONE;
fmt->format.colorspace = V4L2_COLORSPACE_RAW;
fmt->format.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
@@ -591,6 +797,21 @@ static int imx334_get_pad_format(struct v4l2_subdev *sd,
return 0;
}
+static int imx334_get_format_code(struct imx334 *imx334, struct v4l2_subdev_format *fmt)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(imx334_mbus_codes); i++) {
+ if (imx334_mbus_codes[i] == fmt->format.code)
+ break;
+ }
+
+ if (i >= ARRAY_SIZE(imx334_mbus_codes))
+ i = 0;
+
+ return imx334_mbus_codes[i];
+}
+
/**
* imx334_set_pad_format() - Set subdevice pad format
* @sd: pointer to imx334 V4L2 sub-device structure
@@ -609,7 +830,13 @@ static int imx334_set_pad_format(struct v4l2_subdev *sd,
mutex_lock(&imx334->mutex);
- mode = &supported_mode;
+ imx334->cur_code = imx334_get_format_code(imx334, fmt);
+
+ 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) {
@@ -617,7 +844,7 @@ 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) {
ret = imx334_update_controls(imx334, mode);
if (!ret)
imx334->cur_mode = mode;
@@ -642,11 +869,26 @@ 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
@@ -667,6 +909,13 @@ 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) {
@@ -1037,7 +1286,8 @@ 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);
--
2.17.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* Re: [PATCH v4] media: i2c: imx334: support lower bandwidth mode
2022-09-20 5:10 [PATCH v4] media: i2c: imx334: support lower bandwidth mode shravan kumar
@ 2022-09-20 12:14 ` Sakari Ailus
2022-09-26 11:32 ` Shravan.Chippa
0 siblings, 1 reply; 9+ messages in thread
From: Sakari Ailus @ 2022-09-20 12:14 UTC (permalink / raw)
To: shravan kumar
Cc: paul.j.murphy, daniele.alessandrelli, mchehab, linux-media,
linux-kernel, Conor Dooley, Prakash Battu
Hi Shravan,
Thanks for the patch.
On Tue, Sep 20, 2022 at 10:40:23AM +0530, shravan kumar wrote:
> From: Shravan Chippa <shravan.chippa@microchip.com>
>
> Some platforms may not be capable of supporting the bandwidth
> required for 12 bit or 3840x2160 resolutions.
>
> Add support for dynamically selecting 10 bit and 1920x1080
> resolutions while leaving the existing configuration as default
>
> CC: Conor Dooley <conor.dooley@microchip.com>
> Signed-off-by: Prakash Battu <Prakash.Battu@microchip.com>
> Signed-off-by: Shravan Chippa <shravan.chippa@microchip.com>
> ---
>
> V3 -> V4
> - Make the 12 bit and 3840x2160 as default
> - Set bus code SRGGB12 if set format fails
>
> V2 -> V3
> - Fixed the warning reported by kernel test robot
>
> V1 -> V2
> - Addressed the review comment given by Jacopo Mondi,
> Which has bug in imx334_enum_frame_size() loop function,
> - Renamed array codes[] to imx334_mbus_codes[]
> - Modified supported_modes[] to get higher resolution first
>
> ---
> drivers/media/i2c/imx334.c | 302 +++++++++++++++++++++++++++++++++----
> 1 file changed, 276 insertions(+), 26 deletions(-)
>
> diff --git a/drivers/media/i2c/imx334.c b/drivers/media/i2c/imx334.c
> index 062125501788..df2f1821569e 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, 0x0A},
> + {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},
> @@ -243,20 +406,56 @@ static const struct imx334_reg mode_3840x2160_regs[] = {
> {0x3a00, 0x01},
> };
>
> +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},
> +};
> +
> +/*
> + * The supported BUS formats.
> + */
> +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 = 560,
> + .vblank = 1170,
> + .vblank_min = 90,
> + .vblank_max = 132840,
> + .pclk = 594000000,
> + .link_freq_idx = 0,
> + .reg_list = {
> + .num_of_regs = ARRAY_SIZE(mode_1920x1080_regs),
> + .regs = mode_1920x1080_regs,
> + },
> },
> };
>
> @@ -506,10 +705,10 @@ 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;
> }
> @@ -526,15 +725,22 @@ 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)
> + unsigned int i;
> +
> + if (fsize->index >= ARRAY_SIZE(supported_modes))
> return -EINVAL;
>
> - if (fsize->code != supported_mode.code)
> + for (i = 0; i < ARRAY_SIZE(imx334_mbus_codes); ++i) {
> + if (imx334_mbus_codes[i] == fsize->code)
> + break;
> + }
> +
> + if (i == ARRAY_SIZE(imx334_mbus_codes))
> 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;
> @@ -553,7 +759,7 @@ 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.code = imx334->cur_code;
> fmt->format.field = V4L2_FIELD_NONE;
> fmt->format.colorspace = V4L2_COLORSPACE_RAW;
> fmt->format.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
> @@ -591,6 +797,21 @@ static int imx334_get_pad_format(struct v4l2_subdev *sd,
> return 0;
> }
>
> +static int imx334_get_format_code(struct imx334 *imx334, struct v4l2_subdev_format *fmt)
> +{
> + unsigned int i;
> +
> + for (i = 0; i < ARRAY_SIZE(imx334_mbus_codes); i++) {
> + if (imx334_mbus_codes[i] == fmt->format.code)
If you return here, you can remove the check below.
> + break;
> + }
> +
> + if (i >= ARRAY_SIZE(imx334_mbus_codes))
> + i = 0;
> +
> + return imx334_mbus_codes[i];
> +}
> +
> /**
> * imx334_set_pad_format() - Set subdevice pad format
> * @sd: pointer to imx334 V4L2 sub-device structure
> @@ -609,7 +830,13 @@ static int imx334_set_pad_format(struct v4l2_subdev *sd,
>
> mutex_lock(&imx334->mutex);
>
> - mode = &supported_mode;
> + imx334->cur_code = imx334_get_format_code(imx334, fmt);
This should be done only for the active format.
> +
> + 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) {
> @@ -617,7 +844,7 @@ 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) {
> ret = imx334_update_controls(imx334, mode);
> if (!ret)
> imx334->cur_mode = mode;
> @@ -642,11 +869,26 @@ 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));
Please align to immediately right of the opening parenthesis. Same below.
> +
> + case MEDIA_BUS_FMT_SRGGB12_1X12:
> + return imx334_write_regs(imx334, raw12_framefmt_regs,
> + ARRAY_SIZE(raw12_framefmt_regs));
I think you'll also need changes to the pixel clock calculation.
> + }
> +
> + return -EINVAL;
> +}
> +
> /**
> * imx334_start_streaming() - Start sensor stream
> * @imx334: pointer to imx334 device
> @@ -667,6 +909,13 @@ 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) {
> @@ -1037,7 +1286,8 @@ 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);
--
Kind regards,
Sakari Ailus
^ permalink raw reply [flat|nested] 9+ messages in thread
* RE: [PATCH v4] media: i2c: imx334: support lower bandwidth mode
2022-09-20 12:14 ` Sakari Ailus
@ 2022-09-26 11:32 ` Shravan.Chippa
2022-09-26 16:51 ` Sakari Ailus
0 siblings, 1 reply; 9+ messages in thread
From: Shravan.Chippa @ 2022-09-26 11:32 UTC (permalink / raw)
To: sakari.ailus
Cc: paul.j.murphy, daniele.alessandrelli, mchehab, linux-media,
linux-kernel, Conor.Dooley, Prakash.Battu
> -----Original Message-----
> From: Sakari Ailus <sakari.ailus@iki.fi>
> Sent: 20 September 2022 05:44 PM
> To: shravan Chippa - I35088 <Shravan.Chippa@microchip.com>
> Cc: paul.j.murphy@intel.com; daniele.alessandrelli@intel.com;
> mchehab@kernel.org; linux-media@vger.kernel.org; linux-
> kernel@vger.kernel.org; Conor Dooley - M52691
> <Conor.Dooley@microchip.com>; Battu Prakash Reddy - I30399
> <Prakash.Battu@microchip.com>
> Subject: Re: [PATCH v4] media: i2c: imx334: support lower bandwidth mode
>
> [Some people who received this message don't often get email from
> sakari.ailus@iki.fi. Learn why this is important at
> https://aka.ms/LearnAboutSenderIdentification ]
>
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the
> content is safe
>
> Hi Shravan,
>
> Thanks for the patch.
>
> On Tue, Sep 20, 2022 at 10:40:23AM +0530, shravan kumar wrote:
> > From: Shravan Chippa <shravan.chippa@microchip.com>
> >
> > Some platforms may not be capable of supporting the bandwidth required
> > for 12 bit or 3840x2160 resolutions.
> >
> > Add support for dynamically selecting 10 bit and 1920x1080 resolutions
> > while leaving the existing configuration as default
> >
> > CC: Conor Dooley <conor.dooley@microchip.com>
> > Signed-off-by: Prakash Battu <Prakash.Battu@microchip.com>
> > Signed-off-by: Shravan Chippa <shravan.chippa@microchip.com>
> > ---
> >
> > V3 -> V4
> > - Make the 12 bit and 3840x2160 as default
> > - Set bus code SRGGB12 if set format fails
> >
> > V2 -> V3
> > - Fixed the warning reported by kernel test robot
> >
> > V1 -> V2
> > - Addressed the review comment given by Jacopo Mondi,
> > Which has bug in imx334_enum_frame_size() loop function,
> > - Renamed array codes[] to imx334_mbus_codes[]
> > - Modified supported_modes[] to get higher resolution first
> >
> > ---
> > drivers/media/i2c/imx334.c | 302
> > +++++++++++++++++++++++++++++++++----
> > 1 file changed, 276 insertions(+), 26 deletions(-)
> >
> > diff --git a/drivers/media/i2c/imx334.c b/drivers/media/i2c/imx334.c
> > index 062125501788..df2f1821569e 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, 0x0A},
> > + {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},
> > @@ -243,20 +406,56 @@ static const struct imx334_reg
> mode_3840x2160_regs[] = {
> > {0x3a00, 0x01},
> > };
> >
> > +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},
> > +};
> > +
> > +/*
> > + * The supported BUS formats.
> > + */
> > +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 = 560,
> > + .vblank = 1170,
> > + .vblank_min = 90,
> > + .vblank_max = 132840,
> > + .pclk = 594000000,
> > + .link_freq_idx = 0,
> > + .reg_list = {
> > + .num_of_regs = ARRAY_SIZE(mode_1920x1080_regs),
> > + .regs = mode_1920x1080_regs,
> > + },
> > },
> > };
> >
> > @@ -506,10 +705,10 @@ 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;
> > }
> > @@ -526,15 +725,22 @@ 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)
> > + unsigned int i;
> > +
> > + if (fsize->index >= ARRAY_SIZE(supported_modes))
> > return -EINVAL;
> >
> > - if (fsize->code != supported_mode.code)
> > + for (i = 0; i < ARRAY_SIZE(imx334_mbus_codes); ++i) {
> > + if (imx334_mbus_codes[i] == fsize->code)
> > + break;
> > + }
> > +
> > + if (i == ARRAY_SIZE(imx334_mbus_codes))
> > 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;
> > @@ -553,7 +759,7 @@ 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.code = imx334->cur_code;
> > fmt->format.field = V4L2_FIELD_NONE;
> > fmt->format.colorspace = V4L2_COLORSPACE_RAW;
> > fmt->format.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; @@ -591,6
> > +797,21 @@ static int imx334_get_pad_format(struct v4l2_subdev *sd,
> > return 0;
> > }
> >
> > +static int imx334_get_format_code(struct imx334 *imx334, struct
> > +v4l2_subdev_format *fmt) {
> > + unsigned int i;
> > +
> > + for (i = 0; i < ARRAY_SIZE(imx334_mbus_codes); i++) {
> > + if (imx334_mbus_codes[i] == fmt->format.code)
>
> If you return here, you can remove the check below.
This function taken ref from imx219 driver.
And suggested by given by Jacopo Mondi
Change in v2
>
> > + break;
> > + }
> > +
> > + if (i >= ARRAY_SIZE(imx334_mbus_codes))
> > + i = 0;
> > +
> > + return imx334_mbus_codes[i];
> > +}
> > +
> > /**
> > * imx334_set_pad_format() - Set subdevice pad format
> > * @sd: pointer to imx334 V4L2 sub-device structure @@ -609,7 +830,13
> > @@ static int imx334_set_pad_format(struct v4l2_subdev *sd,
> >
> > mutex_lock(&imx334->mutex);
> >
> > - mode = &supported_mode;
> > + imx334->cur_code = imx334_get_format_code(imx334, fmt);
>
> This should be done only for the active format.
Are you expecting if condiftion to check the current bus code with set_pad_fromat bus 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) { @@ -617,7 +844,7
> @@
> > 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) {
> > ret = imx334_update_controls(imx334, mode);
> > if (!ret)
> > imx334->cur_mode = mode; @@ -642,11 +869,26 @@
> > 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));
>
> Please align to immediately right of the opening parenthesis. Same below.
>
> > +
> > + case MEDIA_BUS_FMT_SRGGB12_1X12:
> > + return imx334_write_regs(imx334, raw12_framefmt_regs,
> > +
> > + ARRAY_SIZE(raw12_framefmt_regs));
>
> I think you'll also need changes to the pixel clock calculation.
>
In this driver pixel clock read only variable.
Pixel clock change maybe in different series.
Thanks,
Shravan
> > + }
> > +
> > + return -EINVAL;
> > +}
> > +
> > /**
> > * imx334_start_streaming() - Start sensor stream
> > * @imx334: pointer to imx334 device
> > @@ -667,6 +909,13 @@ 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) {
> > @@ -1037,7 +1286,8 @@ 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);
>
> --
> Kind regards,
>
> Sakari Ailus
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH v4] media: i2c: imx334: support lower bandwidth mode
2022-09-26 11:32 ` Shravan.Chippa
@ 2022-09-26 16:51 ` Sakari Ailus
2022-10-01 8:51 ` Shravan.Chippa
0 siblings, 1 reply; 9+ messages in thread
From: Sakari Ailus @ 2022-09-26 16:51 UTC (permalink / raw)
To: Shravan.Chippa
Cc: paul.j.murphy, daniele.alessandrelli, mchehab, linux-media,
linux-kernel, Conor.Dooley, Prakash.Battu
Hi Shravan,
On Mon, Sep 26, 2022 at 11:32:31AM +0000, Shravan.Chippa@microchip.com wrote:
>
>
> > -----Original Message-----
> > From: Sakari Ailus <sakari.ailus@iki.fi>
> > Sent: 20 September 2022 05:44 PM
> > To: shravan Chippa - I35088 <Shravan.Chippa@microchip.com>
> > Cc: paul.j.murphy@intel.com; daniele.alessandrelli@intel.com;
> > mchehab@kernel.org; linux-media@vger.kernel.org; linux-
> > kernel@vger.kernel.org; Conor Dooley - M52691
> > <Conor.Dooley@microchip.com>; Battu Prakash Reddy - I30399
> > <Prakash.Battu@microchip.com>
> > Subject: Re: [PATCH v4] media: i2c: imx334: support lower bandwidth mode
> >
> > [Some people who received this message don't often get email from
> > sakari.ailus@iki.fi. Learn why this is important at
> > https://aka.ms/LearnAboutSenderIdentification ]
> >
> > EXTERNAL EMAIL: Do not click links or open attachments unless you know the
> > content is safe
This looks like a mail system problem.
> >
> > Hi Shravan,
> >
> > Thanks for the patch.
> >
> > On Tue, Sep 20, 2022 at 10:40:23AM +0530, shravan kumar wrote:
> > > From: Shravan Chippa <shravan.chippa@microchip.com>
> > >
> > > Some platforms may not be capable of supporting the bandwidth required
> > > for 12 bit or 3840x2160 resolutions.
> > >
> > > Add support for dynamically selecting 10 bit and 1920x1080 resolutions
> > > while leaving the existing configuration as default
> > >
> > > CC: Conor Dooley <conor.dooley@microchip.com>
> > > Signed-off-by: Prakash Battu <Prakash.Battu@microchip.com>
> > > Signed-off-by: Shravan Chippa <shravan.chippa@microchip.com>
> > > ---
> > >
> > > V3 -> V4
> > > - Make the 12 bit and 3840x2160 as default
> > > - Set bus code SRGGB12 if set format fails
> > >
> > > V2 -> V3
> > > - Fixed the warning reported by kernel test robot
> > >
> > > V1 -> V2
> > > - Addressed the review comment given by Jacopo Mondi,
> > > Which has bug in imx334_enum_frame_size() loop function,
> > > - Renamed array codes[] to imx334_mbus_codes[]
> > > - Modified supported_modes[] to get higher resolution first
> > >
> > > ---
> > > drivers/media/i2c/imx334.c | 302
> > > +++++++++++++++++++++++++++++++++----
> > > 1 file changed, 276 insertions(+), 26 deletions(-)
> > >
> > > diff --git a/drivers/media/i2c/imx334.c b/drivers/media/i2c/imx334.c
> > > index 062125501788..df2f1821569e 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, 0x0A},
> > > + {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},
> > > @@ -243,20 +406,56 @@ static const struct imx334_reg
> > mode_3840x2160_regs[] = {
> > > {0x3a00, 0x01},
> > > };
> > >
> > > +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},
> > > +};
> > > +
> > > +/*
> > > + * The supported BUS formats.
> > > + */
> > > +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 = 560,
> > > + .vblank = 1170,
> > > + .vblank_min = 90,
> > > + .vblank_max = 132840,
> > > + .pclk = 594000000,
> > > + .link_freq_idx = 0,
> > > + .reg_list = {
> > > + .num_of_regs = ARRAY_SIZE(mode_1920x1080_regs),
> > > + .regs = mode_1920x1080_regs,
> > > + },
> > > },
> > > };
> > >
> > > @@ -506,10 +705,10 @@ 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;
> > > }
> > > @@ -526,15 +725,22 @@ 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)
> > > + unsigned int i;
> > > +
> > > + if (fsize->index >= ARRAY_SIZE(supported_modes))
> > > return -EINVAL;
> > >
> > > - if (fsize->code != supported_mode.code)
> > > + for (i = 0; i < ARRAY_SIZE(imx334_mbus_codes); ++i) {
> > > + if (imx334_mbus_codes[i] == fsize->code)
> > > + break;
> > > + }
> > > +
> > > + if (i == ARRAY_SIZE(imx334_mbus_codes))
> > > 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;
> > > @@ -553,7 +759,7 @@ 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.code = imx334->cur_code;
> > > fmt->format.field = V4L2_FIELD_NONE;
> > > fmt->format.colorspace = V4L2_COLORSPACE_RAW;
> > > fmt->format.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; @@ -591,6
> > > +797,21 @@ static int imx334_get_pad_format(struct v4l2_subdev *sd,
> > > return 0;
> > > }
> > >
> > > +static int imx334_get_format_code(struct imx334 *imx334, struct
> > > +v4l2_subdev_format *fmt) {
> > > + unsigned int i;
> > > +
> > > + for (i = 0; i < ARRAY_SIZE(imx334_mbus_codes); i++) {
> > > + if (imx334_mbus_codes[i] == fmt->format.code)
> >
> > If you return here, you can remove the check below.
> This function taken ref from imx219 driver.
> And suggested by given by Jacopo Mondi
> Change in v2
> >
> > > + break;
> > > + }
> > > +
> > > + if (i >= ARRAY_SIZE(imx334_mbus_codes))
> > > + i = 0;
> > > +
> > > + return imx334_mbus_codes[i];
> > > +}
> > > +
> > > /**
> > > * imx334_set_pad_format() - Set subdevice pad format
> > > * @sd: pointer to imx334 V4L2 sub-device structure @@ -609,7 +830,13
> > > @@ static int imx334_set_pad_format(struct v4l2_subdev *sd,
> > >
> > > mutex_lock(&imx334->mutex);
> > >
> > > - mode = &supported_mode;
> > > + imx334->cur_code = imx334_get_format_code(imx334, fmt);
> >
> > This should be done only for the active format.
> Are you expecting if condiftion to check the current bus code with set_pad_fromat bus code?
Only assign the cur_code field when setting the active format.
> >
> > > +
> > > + 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) { @@ -617,7 +844,7
> > @@
> > > 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) {
The mbus code no longer defines the mode. I think you'll need to take this
into account (pixel rate and link frequency?).
> > > ret = imx334_update_controls(imx334, mode);
> > > if (!ret)
> > > imx334->cur_mode = mode; @@ -642,11 +869,26 @@
> > > 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));
> >
> > Please align to immediately right of the opening parenthesis. Same below.
> >
> > > +
> > > + case MEDIA_BUS_FMT_SRGGB12_1X12:
> > > + return imx334_write_regs(imx334, raw12_framefmt_regs,
> > > +
> > > + ARRAY_SIZE(raw12_framefmt_regs));
> >
> > I think you'll also need changes to the pixel clock calculation.
> >
> In this driver pixel clock read only variable.
> Pixel clock change maybe in different series.
Please address it in this patch.
Is the link frequency affected by this patch as well?
--
Kind regards,
Sakari Ailus
^ permalink raw reply [flat|nested] 9+ messages in thread
* RE: [PATCH v4] media: i2c: imx334: support lower bandwidth mode
2022-09-26 16:51 ` Sakari Ailus
@ 2022-10-01 8:51 ` Shravan.Chippa
2022-10-02 4:42 ` Shravan.Chippa
2022-10-02 12:28 ` Sakari Ailus
0 siblings, 2 replies; 9+ messages in thread
From: Shravan.Chippa @ 2022-10-01 8:51 UTC (permalink / raw)
To: sakari.ailus
Cc: paul.j.murphy, daniele.alessandrelli, mchehab, linux-media,
linux-kernel, Conor.Dooley, Prakash.Battu
> -----Original Message-----
> From: Sakari Ailus <sakari.ailus@iki.fi>
> Sent: 26 September 2022 10:21 PM
> To: shravan Chippa - I35088 <Shravan.Chippa@microchip.com>
> Cc: paul.j.murphy@intel.com; daniele.alessandrelli@intel.com;
> mchehab@kernel.org; linux-media@vger.kernel.org; linux-
> kernel@vger.kernel.org; Conor Dooley - M52691
> <Conor.Dooley@microchip.com>; Battu Prakash Reddy - I30399
> <Prakash.Battu@microchip.com>
> Subject: Re: [PATCH v4] media: i2c: imx334: support lower bandwidth mode
>
> [You don't often get email from sakari.ailus@iki.fi. Learn why this is important
> at https://aka.ms/LearnAboutSenderIdentification ]
>
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the
> content is safe
>
> Hi Shravan,
>
> On Mon, Sep 26, 2022 at 11:32:31AM +0000, Shravan.Chippa@microchip.com
> wrote:
> >
> >
> > > -----Original Message-----
> > > From: Sakari Ailus <sakari.ailus@iki.fi>
> > > Sent: 20 September 2022 05:44 PM
> > > To: shravan Chippa - I35088 <Shravan.Chippa@microchip.com>
> > > Cc: paul.j.murphy@intel.com; daniele.alessandrelli@intel.com;
> > > mchehab@kernel.org; linux-media@vger.kernel.org; linux-
> > > kernel@vger.kernel.org; Conor Dooley - M52691
> > > <Conor.Dooley@microchip.com>; Battu Prakash Reddy - I30399
> > > <Prakash.Battu@microchip.com>
> > > Subject: Re: [PATCH v4] media: i2c: imx334: support lower bandwidth
> > > mode
> > >
> > > [Some people who received this message don't often get email from
> > > sakari.ailus@iki.fi. Learn why this is important at
> > > https://aka.ms/LearnAboutSenderIdentification ]
> > >
> > > EXTERNAL EMAIL: Do not click links or open attachments unless you
> > > know the content is safe
>
> This looks like a mail system problem.
>
> > >
> > > Hi Shravan,
> > >
> > > Thanks for the patch.
> > >
> > > On Tue, Sep 20, 2022 at 10:40:23AM +0530, shravan kumar wrote:
> > > > From: Shravan Chippa <shravan.chippa@microchip.com>
> > > >
> > > > Some platforms may not be capable of supporting the bandwidth
> > > > required for 12 bit or 3840x2160 resolutions.
> > > >
> > > > Add support for dynamically selecting 10 bit and 1920x1080
> > > > resolutions while leaving the existing configuration as default
> > > >
> > > > CC: Conor Dooley <conor.dooley@microchip.com>
> > > > Signed-off-by: Prakash Battu <Prakash.Battu@microchip.com>
> > > > Signed-off-by: Shravan Chippa <shravan.chippa@microchip.com>
> > > > ---
> > > >
> > > > V3 -> V4
> > > > - Make the 12 bit and 3840x2160 as default
> > > > - Set bus code SRGGB12 if set format fails
> > > >
> > > > V2 -> V3
> > > > - Fixed the warning reported by kernel test robot
> > > >
> > > > V1 -> V2
> > > > - Addressed the review comment given by Jacopo Mondi,
> > > > Which has bug in imx334_enum_frame_size() loop function,
> > > > - Renamed array codes[] to imx334_mbus_codes[]
> > > > - Modified supported_modes[] to get higher resolution first
> > > >
> > > > ---
> > > > drivers/media/i2c/imx334.c | 302
> > > > +++++++++++++++++++++++++++++++++----
> > > > 1 file changed, 276 insertions(+), 26 deletions(-)
> > > >
> > > > diff --git a/drivers/media/i2c/imx334.c
> > > > b/drivers/media/i2c/imx334.c index 062125501788..df2f1821569e
> > > > 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, 0x0A},
> > > > + {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},
> > > > @@ -243,20 +406,56 @@ static const struct imx334_reg
> > > mode_3840x2160_regs[] = {
> > > > {0x3a00, 0x01},
> > > > };
> > > >
> > > > +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},
> > > > +};
> > > > +
> > > > +/*
> > > > + * The supported BUS formats.
> > > > + */
> > > > +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 = 560,
> > > > + .vblank = 1170,
> > > > + .vblank_min = 90,
> > > > + .vblank_max = 132840,
> > > > + .pclk = 594000000,
> > > > + .link_freq_idx = 0,
> > > > + .reg_list = {
> > > > + .num_of_regs = ARRAY_SIZE(mode_1920x1080_regs),
> > > > + .regs = mode_1920x1080_regs,
> > > > + },
> > > > },
> > > > };
> > > >
> > > > @@ -506,10 +705,10 @@ 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;
> > > > }
> > > > @@ -526,15 +725,22 @@ 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)
> > > > + unsigned int i;
> > > > +
> > > > + if (fsize->index >= ARRAY_SIZE(supported_modes))
> > > > return -EINVAL;
> > > >
> > > > - if (fsize->code != supported_mode.code)
> > > > + for (i = 0; i < ARRAY_SIZE(imx334_mbus_codes); ++i) {
> > > > + if (imx334_mbus_codes[i] == fsize->code)
> > > > + break;
> > > > + }
> > > > +
> > > > + if (i == ARRAY_SIZE(imx334_mbus_codes))
> > > > 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;
> > > > @@ -553,7 +759,7 @@ 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.code = imx334->cur_code;
> > > > fmt->format.field = V4L2_FIELD_NONE;
> > > > fmt->format.colorspace = V4L2_COLORSPACE_RAW;
> > > > fmt->format.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; @@ -591,6
> > > > +797,21 @@ static int imx334_get_pad_format(struct v4l2_subdev
> > > > +*sd,
> > > > return 0;
> > > > }
> > > >
> > > > +static int imx334_get_format_code(struct imx334 *imx334, struct
> > > > +v4l2_subdev_format *fmt) {
> > > > + unsigned int i;
> > > > +
> > > > + for (i = 0; i < ARRAY_SIZE(imx334_mbus_codes); i++) {
> > > > + if (imx334_mbus_codes[i] == fmt->format.code)
> > >
> > > If you return here, you can remove the check below.
> > This function taken ref from imx219 driver.
> > And suggested by given by Jacopo Mondi Change in v2
> > >
> > > > + break;
> > > > + }
> > > > +
> > > > + if (i >= ARRAY_SIZE(imx334_mbus_codes))
> > > > + i = 0;
> > > > +
> > > > + return imx334_mbus_codes[i]; }
> > > > +
> > > > /**
> > > > * imx334_set_pad_format() - Set subdevice pad format
> > > > * @sd: pointer to imx334 V4L2 sub-device structure @@ -609,7
> > > > +830,13 @@ static int imx334_set_pad_format(struct v4l2_subdev
> > > > *sd,
> > > >
> > > > mutex_lock(&imx334->mutex);
> > > >
> > > > - mode = &supported_mode;
> > > > + imx334->cur_code = imx334_get_format_code(imx334, fmt);
> > >
> > > This should be done only for the active format.
> > Are you expecting if condition to check the current bus code with
> set_pad_fromat bus code?
>
> Only assign the cur_code field when setting the active format.
I have taken reference from imx219 driver
cur_code will update if the requested format bus code maches with available bus_codes list
if not mached with available bus_codes it will use defaults one only.
am I missing any thing here ?
>
> > >
> > > > +
> > > > + 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) { @@ -617,7 +844,7
> > > @@
> > > > 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) {
>
> The mbus code no longer defines the mode. I think you'll need to take this into
> account (pixel rate and link frequency?).
>
> > > > ret = imx334_update_controls(imx334, mode);
> > > > if (!ret)
> > > > imx334->cur_mode = mode; @@ -642,11 +869,26
> > > > @@ 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));
> > >
> > > Please align to immediately right of the opening parenthesis. Same below.
> > >
> > > > +
> > > > + case MEDIA_BUS_FMT_SRGGB12_1X12:
> > > > + return imx334_write_regs(imx334,
> > > > + raw12_framefmt_regs,
> > > > +
> > > > + ARRAY_SIZE(raw12_framefmt_regs));
> > >
> > > I think you'll also need changes to the pixel clock calculation.
> > >
> > In this driver pixel clock read only variable.
> > Pixel clock change maybe in different series.
>
> Please address it in this patch.
>
> Is the link frequency affected by this patch as well?
I will try to modify my patch with the default link frequency available in the driver
Thanks,
Shravan
>
> --
> Kind regards,
>
> Sakari Ailus
^ permalink raw reply [flat|nested] 9+ messages in thread
* RE: [PATCH v4] media: i2c: imx334: support lower bandwidth mode
2022-10-01 8:51 ` Shravan.Chippa
@ 2022-10-02 4:42 ` Shravan.Chippa
2022-10-02 12:00 ` Sakari Ailus
2022-10-02 12:28 ` Sakari Ailus
1 sibling, 1 reply; 9+ messages in thread
From: Shravan.Chippa @ 2022-10-02 4:42 UTC (permalink / raw)
To: sakari.ailus
Cc: paul.j.murphy, daniele.alessandrelli, mchehab, linux-media,
linux-kernel, Conor.Dooley, Prakash.Battu
> -----Original Message-----
> From: shravan Chippa - I35088
> Sent: 01 October 2022 02:22 PM
> To: Sakari Ailus <sakari.ailus@iki.fi>
> Cc: paul.j.murphy@intel.com; daniele.alessandrelli@intel.com;
> mchehab@kernel.org; linux-media@vger.kernel.org; linux-
> kernel@vger.kernel.org; Conor Dooley - M52691
> <conor.dooley@microchip.com>; Battu Prakash Reddy - I30399
> <Prakash.Battu@microchip.com>
> Subject: RE: [PATCH v4] media: i2c: imx334: support lower bandwidth mode
>
>
>
> > -----Original Message-----
> > From: Sakari Ailus <sakari.ailus@iki.fi>
> > Sent: 26 September 2022 10:21 PM
> > To: shravan Chippa - I35088 <Shravan.Chippa@microchip.com>
> > Cc: paul.j.murphy@intel.com; daniele.alessandrelli@intel.com;
> > mchehab@kernel.org; linux-media@vger.kernel.org; linux-
> > kernel@vger.kernel.org; Conor Dooley - M52691
> > <Conor.Dooley@microchip.com>; Battu Prakash Reddy - I30399
> > <Prakash.Battu@microchip.com>
> > Subject: Re: [PATCH v4] media: i2c: imx334: support lower bandwidth
> > mode
> >
> > [You don't often get email from sakari.ailus@iki.fi. Learn why this is
> > important at https://aka.ms/LearnAboutSenderIdentification ]
> >
> > EXTERNAL EMAIL: Do not click links or open attachments unless you know
> > the content is safe
> >
> > Hi Shravan,
> >
> > On Mon, Sep 26, 2022 at 11:32:31AM +0000, Shravan.Chippa@microchip.com
> > wrote:
> > >
> > >
> > > > -----Original Message-----
> > > > From: Sakari Ailus <sakari.ailus@iki.fi>
> > > > Sent: 20 September 2022 05:44 PM
> > > > To: shravan Chippa - I35088 <Shravan.Chippa@microchip.com>
> > > > Cc: paul.j.murphy@intel.com; daniele.alessandrelli@intel.com;
> > > > mchehab@kernel.org; linux-media@vger.kernel.org; linux-
> > > > kernel@vger.kernel.org; Conor Dooley - M52691
> > > > <Conor.Dooley@microchip.com>; Battu Prakash Reddy - I30399
> > > > <Prakash.Battu@microchip.com>
> > > > Subject: Re: [PATCH v4] media: i2c: imx334: support lower
> > > > bandwidth mode
> > > >
> > > > [Some people who received this message don't often get email from
> > > > sakari.ailus@iki.fi. Learn why this is important at
> > > > https://aka.ms/LearnAboutSenderIdentification ]
> > > >
> > > > EXTERNAL EMAIL: Do not click links or open attachments unless you
> > > > know the content is safe
> >
> > This looks like a mail system problem.
> >
> > > >
> > > > Hi Shravan,
> > > >
> > > > Thanks for the patch.
> > > >
> > > > On Tue, Sep 20, 2022 at 10:40:23AM +0530, shravan kumar wrote:
> > > > > From: Shravan Chippa <shravan.chippa@microchip.com>
> > > > >
> > > > > Some platforms may not be capable of supporting the bandwidth
> > > > > required for 12 bit or 3840x2160 resolutions.
> > > > >
> > > > > Add support for dynamically selecting 10 bit and 1920x1080
> > > > > resolutions while leaving the existing configuration as default
> > > > >
> > > > > CC: Conor Dooley <conor.dooley@microchip.com>
> > > > > Signed-off-by: Prakash Battu <Prakash.Battu@microchip.com>
> > > > > Signed-off-by: Shravan Chippa <shravan.chippa@microchip.com>
> > > > > ---
> > > > >
> > > > > V3 -> V4
> > > > > - Make the 12 bit and 3840x2160 as default
> > > > > - Set bus code SRGGB12 if set format fails
> > > > >
> > > > > V2 -> V3
> > > > > - Fixed the warning reported by kernel test robot
> > > > >
> > > > > V1 -> V2
> > > > > - Addressed the review comment given by Jacopo Mondi,
> > > > > Which has bug in imx334_enum_frame_size() loop function,
> > > > > - Renamed array codes[] to imx334_mbus_codes[]
> > > > > - Modified supported_modes[] to get higher resolution first
> > > > >
> > > > > ---
> > > > > drivers/media/i2c/imx334.c | 302
> > > > > +++++++++++++++++++++++++++++++++----
> > > > > 1 file changed, 276 insertions(+), 26 deletions(-)
> > > > >
> > > > > diff --git a/drivers/media/i2c/imx334.c
> > > > > b/drivers/media/i2c/imx334.c index 062125501788..df2f1821569e
> > > > > 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, 0x0A},
> > > > > + {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},
> > > > > @@ -243,20 +406,56 @@ static const struct imx334_reg
> > > > mode_3840x2160_regs[] = {
> > > > > {0x3a00, 0x01},
> > > > > };
> > > > >
> > > > > +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},
> > > > > +};
> > > > > +
> > > > > +/*
> > > > > + * The supported BUS formats.
> > > > > + */
> > > > > +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 = 560,
> > > > > + .vblank = 1170,
> > > > > + .vblank_min = 90,
> > > > > + .vblank_max = 132840,
> > > > > + .pclk = 594000000,
> > > > > + .link_freq_idx = 0,
> > > > > + .reg_list = {
> > > > > + .num_of_regs = ARRAY_SIZE(mode_1920x1080_regs),
> > > > > + .regs = mode_1920x1080_regs,
> > > > > + },
> > > > > },
> > > > > };
> > > > >
> > > > > @@ -506,10 +705,10 @@ 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;
> > > > > }
> > > > > @@ -526,15 +725,22 @@ 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)
> > > > > + unsigned int i;
> > > > > +
> > > > > + if (fsize->index >= ARRAY_SIZE(supported_modes))
> > > > > return -EINVAL;
> > > > >
> > > > > - if (fsize->code != supported_mode.code)
> > > > > + for (i = 0; i < ARRAY_SIZE(imx334_mbus_codes); ++i) {
> > > > > + if (imx334_mbus_codes[i] == fsize->code)
> > > > > + break;
> > > > > + }
> > > > > +
> > > > > + if (i == ARRAY_SIZE(imx334_mbus_codes))
> > > > > 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;
> > > > > @@ -553,7 +759,7 @@ 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.code = imx334->cur_code;
> > > > > fmt->format.field = V4L2_FIELD_NONE;
> > > > > fmt->format.colorspace = V4L2_COLORSPACE_RAW;
> > > > > fmt->format.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; @@ -591,6
> > > > > +797,21 @@ static int imx334_get_pad_format(struct v4l2_subdev
> > > > > +*sd,
> > > > > return 0;
> > > > > }
> > > > >
> > > > > +static int imx334_get_format_code(struct imx334 *imx334, struct
> > > > > +v4l2_subdev_format *fmt) {
> > > > > + unsigned int i;
> > > > > +
> > > > > + for (i = 0; i < ARRAY_SIZE(imx334_mbus_codes); i++) {
> > > > > + if (imx334_mbus_codes[i] == fmt->format.code)
> > > >
> > > > If you return here, you can remove the check below.
> > > This function taken ref from imx219 driver.
> > > And suggested by given by Jacopo Mondi Change in v2
> > > >
> > > > > + break;
> > > > > + }
> > > > > +
> > > > > + if (i >= ARRAY_SIZE(imx334_mbus_codes))
> > > > > + i = 0;
> > > > > +
> > > > > + return imx334_mbus_codes[i]; }
> > > > > +
> > > > > /**
> > > > > * imx334_set_pad_format() - Set subdevice pad format
> > > > > * @sd: pointer to imx334 V4L2 sub-device structure @@ -609,7
> > > > > +830,13 @@ static int imx334_set_pad_format(struct v4l2_subdev
> > > > > *sd,
> > > > >
> > > > > mutex_lock(&imx334->mutex);
> > > > >
> > > > > - mode = &supported_mode;
> > > > > + imx334->cur_code = imx334_get_format_code(imx334, fmt);
> > > >
> > > > This should be done only for the active format.
> > > Are you expecting if condition to check the current bus code with
> > set_pad_fromat bus code?
> >
> > Only assign the cur_code field when setting the active format.
> I have taken reference from imx219 driver cur_code will update if the requested
> format bus code maches with available bus_codes list if not mached with
> available bus_codes it will use defaults one only.
> am I missing any thing here ?
R u expecting to change the current bus code when get the V4L2_SUBDEV_FORMAT_ACTIVE requested?
I will try to modify in the next revision this case.
Thanks,
Shravan
> >
> > > >
> > > > > +
> > > > > + 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) { @@ -617,7
> > > > > +844,7
> > > > @@
> > > > > 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) {
> >
> > The mbus code no longer defines the mode. I think you'll need to take
> > this into account (pixel rate and link frequency?).
> >
> > > > > ret = imx334_update_controls(imx334, mode);
> > > > > if (!ret)
> > > > > imx334->cur_mode = mode; @@ -642,11
> > > > > +869,26 @@ 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));
> > > >
> > > > Please align to immediately right of the opening parenthesis. Same below.
> > > >
> > > > > +
> > > > > + case MEDIA_BUS_FMT_SRGGB12_1X12:
> > > > > + return imx334_write_regs(imx334,
> > > > > + raw12_framefmt_regs,
> > > > > +
> > > > > + ARRAY_SIZE(raw12_framefmt_regs));
> > > >
> > > > I think you'll also need changes to the pixel clock calculation.
> > > >
> > > In this driver pixel clock read only variable.
> > > Pixel clock change maybe in different series.
> >
> > Please address it in this patch.
> >
> > Is the link frequency affected by this patch as well?
>
> I will try to modify my patch with the default link frequency available in the
> driver
>
> Thanks,
> Shravan
> >
> > --
> > Kind regards,
> >
> > Sakari Ailus
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH v4] media: i2c: imx334: support lower bandwidth mode
2022-10-02 4:42 ` Shravan.Chippa
@ 2022-10-02 12:00 ` Sakari Ailus
0 siblings, 0 replies; 9+ messages in thread
From: Sakari Ailus @ 2022-10-02 12:00 UTC (permalink / raw)
To: Shravan.Chippa
Cc: paul.j.murphy, daniele.alessandrelli, mchehab, linux-media,
linux-kernel, Conor.Dooley, Prakash.Battu
On Sun, Oct 02, 2022 at 04:42:06AM +0000, Shravan.Chippa@microchip.com wrote:
> > > > > > +830,13 @@ static int imx334_set_pad_format(struct v4l2_subdev
> > > > > > *sd,
> > > > > >
> > > > > > mutex_lock(&imx334->mutex);
> > > > > >
> > > > > > - mode = &supported_mode;
> > > > > > + imx334->cur_code = imx334_get_format_code(imx334, fmt);
> > > > >
> > > > > This should be done only for the active format.
> > > > Are you expecting if condition to check the current bus code with
> > > set_pad_fromat bus code?
> > >
> > > Only assign the cur_code field when setting the active format.
> > I have taken reference from imx219 driver cur_code will update if the requested
> > format bus code maches with available bus_codes list if not mached with
> > available bus_codes it will use defaults one only.
> > am I missing any thing here ?
>
> R u expecting to change the current bus code when get the V4L2_SUBDEV_FORMAT_ACTIVE requested?
> I will try to modify in the next revision this case.
Yes, please.
--
Sakari Ailus
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH v4] media: i2c: imx334: support lower bandwidth mode
2022-10-01 8:51 ` Shravan.Chippa
2022-10-02 4:42 ` Shravan.Chippa
@ 2022-10-02 12:28 ` Sakari Ailus
2022-10-12 9:27 ` Shravan.Chippa
1 sibling, 1 reply; 9+ messages in thread
From: Sakari Ailus @ 2022-10-02 12:28 UTC (permalink / raw)
To: Shravan.Chippa
Cc: paul.j.murphy, daniele.alessandrelli, mchehab, linux-media,
linux-kernel, Conor.Dooley, Prakash.Battu
On Sat, Oct 01, 2022 at 08:51:46AM +0000, Shravan.Chippa@microchip.com wrote:
> > > > > + case MEDIA_BUS_FMT_SRGGB12_1X12:
> > > > > + return imx334_write_regs(imx334,
> > > > > + raw12_framefmt_regs,
> > > > > +
> > > > > + ARRAY_SIZE(raw12_framefmt_regs));
> > > >
> > > > I think you'll also need changes to the pixel clock calculation.
> > > >
> > > In this driver pixel clock read only variable.
> > > Pixel clock change maybe in different series.
> >
> > Please address it in this patch.
> >
> > Is the link frequency affected by this patch as well?
>
> I will try to modify my patch with the default link frequency available in the driver
Also check the frequencies the driver enables will be available in
link-frequencies.
--
Sakari Ailus
^ permalink raw reply [flat|nested] 9+ messages in thread
* RE: [PATCH v4] media: i2c: imx334: support lower bandwidth mode
2022-10-02 12:28 ` Sakari Ailus
@ 2022-10-12 9:27 ` Shravan.Chippa
0 siblings, 0 replies; 9+ messages in thread
From: Shravan.Chippa @ 2022-10-12 9:27 UTC (permalink / raw)
To: sakari.ailus
Cc: paul.j.murphy, daniele.alessandrelli, mchehab, linux-media,
linux-kernel, Conor.Dooley, Prakash.Battu
> -----Original Message-----
> From: Sakari Ailus <sakari.ailus@iki.fi>
> Sent: 02 October 2022 05:59 PM
> To: shravan Chippa - I35088 <Shravan.Chippa@microchip.com>
> Cc: paul.j.murphy@intel.com; daniele.alessandrelli@intel.com;
> mchehab@kernel.org; linux-media@vger.kernel.org; linux-
> kernel@vger.kernel.org; Conor Dooley - M52691
> <Conor.Dooley@microchip.com>; Battu Prakash Reddy - I30399
> <Prakash.Battu@microchip.com>
> Subject: Re: [PATCH v4] media: i2c: imx334: support lower bandwidth mode
>
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the
> content is safe
>
> On Sat, Oct 01, 2022 at 08:51:46AM +0000, Shravan.Chippa@microchip.com
> wrote:
> > > > > > + case MEDIA_BUS_FMT_SRGGB12_1X12:
> > > > > > + return imx334_write_regs(imx334,
> > > > > > + raw12_framefmt_regs,
> > > > > > +
> > > > > > + ARRAY_SIZE(raw12_framefmt_regs));
> > > > >
> > > > > I think you'll also need changes to the pixel clock calculation.
> > > > >
> > > > In this driver pixel clock read only variable.
> > > > Pixel clock change maybe in different series.
> > >
> > > Please address it in this patch.
> > >
> > > Is the link frequency affected by this patch as well?
> >
> > I will try to modify my patch with the default link frequency
> > available in the driver
>
> Also check the frequencies the driver enables will be available in link-
> frequencies.
This patch is not affecting the default link frequency 891Mbps with input clock frequency (24Mhz)
I have cross-checked with the present supported 3840x2160 resolution and imx334 UG.
Thanks,
Shravan
>
> --
> Sakari Ailus
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2022-10-12 9:28 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-09-20 5:10 [PATCH v4] media: i2c: imx334: support lower bandwidth mode shravan kumar
2022-09-20 12:14 ` Sakari Ailus
2022-09-26 11:32 ` Shravan.Chippa
2022-09-26 16:51 ` Sakari Ailus
2022-10-01 8:51 ` Shravan.Chippa
2022-10-02 4:42 ` Shravan.Chippa
2022-10-02 12:00 ` Sakari Ailus
2022-10-02 12:28 ` Sakari Ailus
2022-10-12 9:27 ` Shravan.Chippa
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