diff options
| -rw-r--r-- | drivers/media/i2c/m5mols/m5mols.h | 9 | ||||
| -rw-r--r-- | drivers/media/i2c/m5mols/m5mols_capture.c | 3 | ||||
| -rw-r--r-- | drivers/media/i2c/m5mols/m5mols_core.c | 47 | ||||
| -rw-r--r-- | drivers/media/i2c/m5mols/m5mols_reg.h | 1 |
4 files changed, 60 insertions, 0 deletions
diff --git a/drivers/media/i2c/m5mols/m5mols.h b/drivers/media/i2c/m5mols/m5mols.h index 86c815be348c..4ab8b370e665 100644 --- a/drivers/media/i2c/m5mols/m5mols.h +++ b/drivers/media/i2c/m5mols/m5mols.h @@ -19,6 +19,13 @@ #include <media/v4l2-subdev.h> #include "m5mols_reg.h" + +/* An amount of data transmitted in addition to the value + * determined by CAPP_JPEG_SIZE_MAX register. + */ +#define M5MOLS_JPEG_TAGS_SIZE 0x20000 +#define M5MOLS_MAIN_JPEG_SIZE_MAX (5 * SZ_1M) + extern int m5mols_debug; enum m5mols_restype { @@ -67,12 +74,14 @@ struct m5mols_exif { /** * struct m5mols_capture - Structure for the capture capability * @exif: EXIF information + * @buf_size: internal JPEG frame buffer size, in bytes * @main: size in bytes of the main image * @thumb: size in bytes of the thumb image, if it was accompanied * @total: total size in bytes of the produced image */ struct m5mols_capture { struct m5mols_exif exif; + unsigned int buf_size; u32 main; u32 thumb; u32 total; diff --git a/drivers/media/i2c/m5mols/m5mols_capture.c b/drivers/media/i2c/m5mols/m5mols_capture.c index cb243bd278ce..ab34ccedf31e 100644 --- a/drivers/media/i2c/m5mols/m5mols_capture.c +++ b/drivers/media/i2c/m5mols/m5mols_capture.c @@ -105,6 +105,7 @@ static int m5mols_capture_info(struct m5mols_info *info) int m5mols_start_capture(struct m5mols_info *info) { + unsigned int framesize = info->cap.buf_size - M5MOLS_JPEG_TAGS_SIZE; struct v4l2_subdev *sd = &info->sd; int ret; @@ -121,6 +122,8 @@ int m5mols_start_capture(struct m5mols_info *info) if (!ret) ret = m5mols_write(sd, CAPP_MAIN_IMAGE_SIZE, info->resolution); if (!ret) + ret = m5mols_write(sd, CAPP_JPEG_SIZE_MAX, framesize); + if (!ret) ret = m5mols_set_mode(info, REG_CAPTURE); if (!ret) /* Wait until a frame is captured to ISP internal memory */ diff --git a/drivers/media/i2c/m5mols/m5mols_core.c b/drivers/media/i2c/m5mols/m5mols_core.c index 2f490ef26c38..8131d651de9e 100644 --- a/drivers/media/i2c/m5mols/m5mols_core.c +++ b/drivers/media/i2c/m5mols/m5mols_core.c @@ -599,6 +599,51 @@ static int m5mols_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, return ret; } +static int m5mols_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad, + struct v4l2_mbus_frame_desc *fd) +{ + struct m5mols_info *info = to_m5mols(sd); + + if (pad != 0 || fd == NULL) + return -EINVAL; + + mutex_lock(&info->lock); + /* + * .get_frame_desc is only used for compressed formats, + * thus we always return the capture frame parameters here. + */ + fd->entry[0].length = info->cap.buf_size; + fd->entry[0].pixelcode = info->ffmt[M5MOLS_RESTYPE_CAPTURE].code; + mutex_unlock(&info->lock); + + fd->entry[0].flags = V4L2_MBUS_FRAME_DESC_FL_LEN_MAX; + fd->num_entries = 1; + + return 0; +} + +static int m5mols_set_frame_desc(struct v4l2_subdev *sd, unsigned int pad, + struct v4l2_mbus_frame_desc *fd) +{ + struct m5mols_info *info = to_m5mols(sd); + struct v4l2_mbus_framefmt *mf = &info->ffmt[M5MOLS_RESTYPE_CAPTURE]; + + if (pad != 0 || fd == NULL) + return -EINVAL; + + fd->entry[0].flags = V4L2_MBUS_FRAME_DESC_FL_LEN_MAX; + fd->num_entries = 1; + fd->entry[0].length = clamp_t(u32, fd->entry[0].length, + mf->width * mf->height, + M5MOLS_MAIN_JPEG_SIZE_MAX); + mutex_lock(&info->lock); + info->cap.buf_size = fd->entry[0].length; + mutex_unlock(&info->lock); + + return 0; +} + + static int m5mols_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_mbus_code_enum *code) @@ -615,6 +660,8 @@ static struct v4l2_subdev_pad_ops m5mols_pad_ops = { .enum_mbus_code = m5mols_enum_mbus_code, .get_fmt = m5mols_get_fmt, .set_fmt = m5mols_set_fmt, + .get_frame_desc = m5mols_get_frame_desc, + .set_frame_desc = m5mols_set_frame_desc, }; /** diff --git a/drivers/media/i2c/m5mols/m5mols_reg.h b/drivers/media/i2c/m5mols/m5mols_reg.h index 14d4be72aeff..58d8027508df 100644 --- a/drivers/media/i2c/m5mols/m5mols_reg.h +++ b/drivers/media/i2c/m5mols/m5mols_reg.h @@ -310,6 +310,7 @@ #define REG_JPEG 0x10 #define CAPP_MAIN_IMAGE_SIZE I2C_REG(CAT_CAPT_PARM, 0x01, 1) +#define CAPP_JPEG_SIZE_MAX I2C_REG(CAT_CAPT_PARM, 0x0f, 4) #define CAPP_JPEG_RATIO I2C_REG(CAT_CAPT_PARM, 0x17, 1) #define CAPP_MCC_MODE I2C_REG(CAT_CAPT_PARM, 0x1d, 1) |
