> -----Original Message----- > From: Sakari Ailus <sakari.ailus@xxxxxx> > Sent: 20 September 2022 05:44 PM > To: shravan Chippa - I35088 <Shravan.Chippa@xxxxxxxxxxxxx> > Cc: paul.j.murphy@xxxxxxxxx; daniele.alessandrelli@xxxxxxxxx; > mchehab@xxxxxxxxxx; linux-media@xxxxxxxxxxxxxxx; linux- > kernel@xxxxxxxxxxxxxxx; Conor Dooley - M52691 > <Conor.Dooley@xxxxxxxxxxxxx>; Battu Prakash Reddy - I30399 > <Prakash.Battu@xxxxxxxxxxxxx> > 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@xxxxxx. 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@xxxxxxxxxxxxx> > > > > 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@xxxxxxxxxxxxx> > > Signed-off-by: Prakash Battu <Prakash.Battu@xxxxxxxxxxxxx> > > Signed-off-by: Shravan Chippa <shravan.chippa@xxxxxxxxxxxxx> > > --- > > > > 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
