Commit 7462df58 authored by Shravan Chippa's avatar Shravan Chippa Committed by Mauro Carvalho Chehab

media: i2c: imx334: support lower bandwidth mode

Some platforms may not be capable of supporting the bandwidth
required for 12 bit or 3840x2160@60 resolutions.

Add support for dynamically selecting 10 bit and 1920x1080@30
resolutions while leaving the existing configuration as default.
Reviewed-by: default avatarJacopo Mondi <jacopo.mondi@ideasonboard.com>
CC: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: default avatarPrakash Battu <Prakash.Battu@microchip.com>
Signed-off-by: default avatarShravan Chippa <shravan.chippa@microchip.com>
Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@kernel.org>
parent 5ca5515a
......@@ -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;
};
......@@ -147,7 +147,170 @@ static const s64 link_freq[] = {
IMX334_LINK_FREQ,
};
/* Sensor mode registers */
/* Sensor mode registers for 1920x1080@30fps */
static const struct imx334_reg mode_1920x1080_regs[] = {
{0x3000, 0x01},
{0x3018, 0x04},
{0x3030, 0xca},
{0x3031, 0x08},
{0x3032, 0x00},
{0x3034, 0x4c},
{0x3035, 0x04},
{0x302c, 0xf0},
{0x302d, 0x03},
{0x302e, 0x80},
{0x302f, 0x07},
{0x3074, 0xcc},
{0x3075, 0x02},
{0x308e, 0xcd},
{0x308f, 0x02},
{0x3076, 0x38},
{0x3077, 0x04},
{0x3090, 0x38},
{0x3091, 0x04},
{0x3308, 0x38},
{0x3309, 0x04},
{0x30C6, 0x00},
{0x30c7, 0x00},
{0x30ce, 0x00},
{0x30cf, 0x00},
{0x30d8, 0x18},
{0x30d9, 0x0a},
{0x304c, 0x00},
{0x304e, 0x00},
{0x304f, 0x00},
{0x3050, 0x00},
{0x30b6, 0x00},
{0x30b7, 0x00},
{0x3116, 0x08},
{0x3117, 0x00},
{0x31a0, 0x20},
{0x31a1, 0x0f},
{0x300c, 0x3b},
{0x300d, 0x29},
{0x314c, 0x29},
{0x314d, 0x01},
{0x315a, 0x06},
{0x3168, 0xa0},
{0x316a, 0x7e},
{0x319e, 0x02},
{0x3199, 0x00},
{0x319d, 0x00},
{0x31dd, 0x03},
{0x3300, 0x00},
{0x341c, 0xff},
{0x341d, 0x01},
{0x3a01, 0x03},
{0x3a18, 0x7f},
{0x3a19, 0x00},
{0x3a1a, 0x37},
{0x3a1b, 0x00},
{0x3a1c, 0x37},
{0x3a1d, 0x00},
{0x3a1e, 0xf7},
{0x3a1f, 0x00},
{0x3a20, 0x3f},
{0x3a21, 0x00},
{0x3a20, 0x6f},
{0x3a21, 0x00},
{0x3a20, 0x3f},
{0x3a21, 0x00},
{0x3a20, 0x5f},
{0x3a21, 0x00},
{0x3a20, 0x2f},
{0x3a21, 0x00},
{0x3078, 0x02},
{0x3079, 0x00},
{0x307a, 0x00},
{0x307b, 0x00},
{0x3080, 0x02},
{0x3081, 0x00},
{0x3082, 0x00},
{0x3083, 0x00},
{0x3088, 0x02},
{0x3094, 0x00},
{0x3095, 0x00},
{0x3096, 0x00},
{0x309b, 0x02},
{0x309c, 0x00},
{0x309d, 0x00},
{0x309e, 0x00},
{0x30a4, 0x00},
{0x30a5, 0x00},
{0x3288, 0x21},
{0x328a, 0x02},
{0x3414, 0x05},
{0x3416, 0x18},
{0x35Ac, 0x0e},
{0x3648, 0x01},
{0x364a, 0x04},
{0x364c, 0x04},
{0x3678, 0x01},
{0x367c, 0x31},
{0x367e, 0x31},
{0x3708, 0x02},
{0x3714, 0x01},
{0x3715, 0x02},
{0x3716, 0x02},
{0x3717, 0x02},
{0x371c, 0x3d},
{0x371d, 0x3f},
{0x372c, 0x00},
{0x372d, 0x00},
{0x372e, 0x46},
{0x372f, 0x00},
{0x3730, 0x89},
{0x3731, 0x00},
{0x3732, 0x08},
{0x3733, 0x01},
{0x3734, 0xfe},
{0x3735, 0x05},
{0x375d, 0x00},
{0x375e, 0x00},
{0x375f, 0x61},
{0x3760, 0x06},
{0x3768, 0x1b},
{0x3769, 0x1b},
{0x376a, 0x1a},
{0x376b, 0x19},
{0x376c, 0x18},
{0x376d, 0x14},
{0x376e, 0x0f},
{0x3776, 0x00},
{0x3777, 0x00},
{0x3778, 0x46},
{0x3779, 0x00},
{0x377a, 0x08},
{0x377b, 0x01},
{0x377c, 0x45},
{0x377d, 0x01},
{0x377e, 0x23},
{0x377f, 0x02},
{0x3780, 0xd9},
{0x3781, 0x03},
{0x3782, 0xf5},
{0x3783, 0x06},
{0x3784, 0xa5},
{0x3788, 0x0f},
{0x378a, 0xd9},
{0x378b, 0x03},
{0x378c, 0xeb},
{0x378d, 0x05},
{0x378e, 0x87},
{0x378f, 0x06},
{0x3790, 0xf5},
{0x3792, 0x43},
{0x3794, 0x7a},
{0x3796, 0xa1},
{0x37b0, 0x37},
{0x3e04, 0x0e},
{0x30e8, 0x50},
{0x30e9, 0x00},
{0x3e04, 0x0e},
{0x3002, 0x00},
};
/* Sensor mode registers for 3840x2160@30fps */
static const struct imx334_reg mode_3840x2160_regs[] = {
{0x3000, 0x01},
{0x3002, 0x00},
......@@ -263,8 +426,28 @@ static const struct imx334_reg mode_3840x2160_regs[] = {
{0x3a29, 0x00},
};
static const struct imx334_reg raw10_framefmt_regs[] = {
{0x3050, 0x00},
{0x319d, 0x00},
{0x341c, 0xff},
{0x341d, 0x01},
};
static const struct imx334_reg raw12_framefmt_regs[] = {
{0x3050, 0x01},
{0x319d, 0x01},
{0x341c, 0x47},
{0x341d, 0x00},
};
static const u32 imx334_mbus_codes[] = {
MEDIA_BUS_FMT_SRGGB12_1X12,
MEDIA_BUS_FMT_SRGGB10_1X10,
};
/* Supported sensor mode configurations */
static const struct imx334_mode supported_mode = {
static const struct imx334_mode supported_modes[] = {
{
.width = 3840,
.height = 2160,
.hblank = 560,
......@@ -273,11 +456,24 @@ static const struct imx334_mode supported_mode = {
.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,
},
}, {
.width = 1920,
.height = 1080,
.hblank = 2480,
.vblank = 1170,
.vblank_min = 45,
.vblank_max = 132840,
.pclk = 297000000,
.link_freq_idx = 0,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_1920x1080_regs),
.regs = mode_1920x1080_regs,
},
},
};
/**
......@@ -518,6 +714,18 @@ static const struct v4l2_ctrl_ops imx334_ctrl_ops = {
.s_ctrl = imx334_set_ctrl,
};
static int imx334_get_format_code(struct imx334 *imx334, u32 code)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(imx334_mbus_codes); i++) {
if (imx334_mbus_codes[i] == code)
return imx334_mbus_codes[i];
}
return imx334_mbus_codes[0];
}
/**
* imx334_enum_mbus_code() - Enumerate V4L2 sub-device mbus codes
* @sd: pointer to imx334 V4L2 sub-device structure
......@@ -530,10 +738,10 @@ static int imx334_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->index > 0)
if (code->index >= ARRAY_SIZE(imx334_mbus_codes))
return -EINVAL;
code->code = supported_mode.code;
code->code = imx334_mbus_codes[code->index];
return 0;
}
......@@ -550,15 +758,20 @@ static int imx334_enum_frame_size(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *fsize)
{
if (fsize->index > 0)
struct imx334 *imx334 = to_imx334(sd);
u32 code;
if (fsize->index >= ARRAY_SIZE(supported_modes))
return -EINVAL;
if (fsize->code != supported_mode.code)
code = imx334_get_format_code(imx334, fsize->code);
if (fsize->code != code)
return -EINVAL;
fsize->min_width = supported_mode.width;
fsize->min_width = supported_modes[fsize->index].width;
fsize->max_width = fsize->min_width;
fsize->min_height = supported_mode.height;
fsize->min_height = supported_modes[fsize->index].height;
fsize->max_height = fsize->min_height;
return 0;
......@@ -577,7 +790,6 @@ static void imx334_fill_pad_format(struct imx334 *imx334,
{
fmt->format.width = mode->width;
fmt->format.height = mode->height;
fmt->format.code = mode->code;
fmt->format.field = V4L2_FIELD_NONE;
fmt->format.colorspace = V4L2_COLORSPACE_RAW;
fmt->format.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
......@@ -607,6 +819,7 @@ static int imx334_get_pad_format(struct v4l2_subdev *sd,
framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
fmt->format = *framefmt;
} else {
fmt->format.code = imx334->cur_code;
imx334_fill_pad_format(imx334, imx334->cur_mode, fmt);
}
......@@ -633,15 +846,21 @@ static int imx334_set_pad_format(struct v4l2_subdev *sd,
mutex_lock(&imx334->mutex);
mode = &supported_mode;
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);
fmt->format.code = imx334_get_format_code(imx334, fmt->format.code);
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
struct v4l2_mbus_framefmt *framefmt;
framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
*framefmt = fmt->format;
} else {
} else if (imx334->cur_mode != mode || imx334->cur_code != fmt->format.code) {
imx334->cur_code = fmt->format.code;
ret = imx334_update_controls(imx334, mode);
if (!ret)
imx334->cur_mode = mode;
......@@ -666,11 +885,26 @@ static int imx334_init_pad_cfg(struct v4l2_subdev *sd,
struct v4l2_subdev_format fmt = { 0 };
fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
imx334_fill_pad_format(imx334, &supported_mode, &fmt);
imx334_fill_pad_format(imx334, &supported_modes[0], &fmt);
return imx334_set_pad_format(sd, sd_state, &fmt);
}
static int imx334_set_framefmt(struct imx334 *imx334)
{
switch (imx334->cur_code) {
case MEDIA_BUS_FMT_SRGGB10_1X10:
return imx334_write_regs(imx334, raw10_framefmt_regs,
ARRAY_SIZE(raw10_framefmt_regs));
case MEDIA_BUS_FMT_SRGGB12_1X12:
return imx334_write_regs(imx334, raw12_framefmt_regs,
ARRAY_SIZE(raw12_framefmt_regs));
}
return -EINVAL;
}
/**
* imx334_start_streaming() - Start sensor stream
* @imx334: pointer to imx334 device
......@@ -691,6 +925,13 @@ static int imx334_start_streaming(struct imx334 *imx334)
return ret;
}
ret = imx334_set_framefmt(imx334);
if (ret) {
dev_err(imx334->dev, "%s failed to set frame format: %d\n",
__func__, ret);
return ret;
}
/* Setup handler will write actual exposure and gain */
ret = __v4l2_ctrl_handler_setup(imx334->sd.ctrl_handler);
if (ret) {
......@@ -1061,7 +1302,8 @@ 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);
......
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