Re: [PATCH 6/6] media: ov5640: Consolidate JPEG compression mode setting

[Chen-Yu Tsai]

On Tue, Feb 5, 2019 at 4:55 PM Sakari Ailus
<sakari.ailus@xxxxxxxxxxxxxxx> wrote:
>
> Hi Chen-Yu,
>
> On Fri, Jan 18, 2019 at 04:52:06PM +0800, Chen-Yu Tsai wrote:
> > The register value lists for all the supported resolution settings all
> > include a register address/value pair for setting the JPEG compression
> > mode. With the exception of 1080p (which sets mode 2), all resolutions
> > use mode 3.
> >
> > The only difference between mode 2 and mode 3 is that mode 2 may have
> > padding data on the last line, while mode 3 does not add padding data.
> >
> > As these register values were from dumps of running systems, and the
> > difference between the modes is quite small, using mode 3 for all
> > configurations should be OK.
> >
> > Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx>
> > ---
> >  drivers/media/i2c/ov5640.c | 34 +++++++++++++++++++++++-----------
> >  1 file changed, 23 insertions(+), 11 deletions(-)
> >
> > diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
> > index 1c1dc401c678..3d2c5de73283 100644
> > --- a/drivers/media/i2c/ov5640.c
> > +++ b/drivers/media/i2c/ov5640.c
> > @@ -85,6 +85,7 @@
> >  #define OV5640_REG_FORMAT_CONTROL00  0x4300
> >  #define OV5640_REG_VFIFO_HSIZE               0x4602
> >  #define OV5640_REG_VFIFO_VSIZE               0x4604
> > +#define OV5640_REG_JPG_MODE_SELECT   0x4713
>
> How has this been tested?
>
> The register is referred to as "OV5640_REG_JPEG_MODE_SELECT" below. I can
> fix it if it's just a typo, but please confirm.

It's a typo. The datasheet uses the abbreviated form, JPG_MODE_SELECT,
but all the bitfield names are the full JPEG form. I believe I missed
the other occurrence while fixing up the names to match the datasheet.
I appologize for not doing a final compile test.

Thanks
ChenYu

> Thanks.
>
> >  #define OV5640_REG_POLARITY_CTRL00   0x4740
> >  #define OV5640_REG_MIPI_CTRL00               0x4800
> >  #define OV5640_REG_DEBUG_MODE                0x4814
> > @@ -303,7 +304,7 @@ static const struct reg_value ov5640_init_setting_30fps_VGA[] = {
> >       {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x3000, 0x00, 0, 0},
> >       {0x3002, 0x1c, 0, 0}, {0x3004, 0xff, 0, 0}, {0x3006, 0xc3, 0, 0},
> >       {0x302e, 0x08, 0, 0}, {0x4300, 0x3f, 0, 0},
> > -     {0x501f, 0x00, 0, 0}, {0x4713, 0x03, 0, 0}, {0x4407, 0x04, 0, 0},
> > +     {0x501f, 0x00, 0, 0}, {0x4407, 0x04, 0, 0},
> >       {0x440e, 0x00, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
> >       {0x4837, 0x0a, 0, 0}, {0x3824, 0x02, 0, 0},
> >       {0x5000, 0xa7, 0, 0}, {0x5001, 0xa3, 0, 0}, {0x5180, 0xff, 0, 0},
> > @@ -372,7 +373,7 @@ static const struct reg_value ov5640_setting_VGA_640_480[] = {
> >       {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
> >       {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
> >       {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
> > -     {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
> > +     {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0},
> >       {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
> >       {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
> >  };
> > @@ -391,7 +392,7 @@ static const struct reg_value ov5640_setting_XGA_1024_768[] = {
> >       {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
> >       {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
> >       {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
> > -     {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
> > +     {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0},
> >       {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
> >       {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
> >  };
> > @@ -410,7 +411,7 @@ static const struct reg_value ov5640_setting_QVGA_320_240[] = {
> >       {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
> >       {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
> >       {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
> > -     {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
> > +     {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0},
> >       {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
> >       {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
> >  };
> > @@ -429,7 +430,7 @@ static const struct reg_value ov5640_setting_QCIF_176_144[] = {
> >       {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
> >       {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
> >       {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
> > -     {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
> > +     {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0},
> >       {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
> >       {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
> >  };
> > @@ -448,7 +449,7 @@ static const struct reg_value ov5640_setting_NTSC_720_480[] = {
> >       {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
> >       {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
> >       {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
> > -     {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
> > +     {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0},
> >       {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
> >       {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
> >  };
> > @@ -467,7 +468,7 @@ static const struct reg_value ov5640_setting_PAL_720_576[] = {
> >       {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
> >       {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
> >       {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
> > -     {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
> > +     {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0},
> >       {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
> >       {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
> >  };
> > @@ -486,7 +487,7 @@ static const struct reg_value ov5640_setting_720P_1280_720[] = {
> >       {0x3a03, 0xe4, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0xbc, 0, 0},
> >       {0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x72, 0, 0}, {0x3a0e, 0x01, 0, 0},
> >       {0x3a0d, 0x02, 0, 0}, {0x3a14, 0x02, 0, 0}, {0x3a15, 0xe4, 0, 0},
> > -     {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
> > +     {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0},
> >       {0x4407, 0x04, 0, 0}, {0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0},
> >       {0x3824, 0x04, 0, 0}, {0x5001, 0x83, 0, 0},
> >  };
> > @@ -506,7 +507,7 @@ static const struct reg_value ov5640_setting_1080P_1920_1080[] = {
> >       {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
> >       {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
> >       {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
> > -     {0x4001, 0x02, 0, 0}, {0x4004, 0x06, 0, 0}, {0x4713, 0x03, 0, 0},
> > +     {0x4001, 0x02, 0, 0}, {0x4004, 0x06, 0, 0},
> >       {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
> >       {0x3824, 0x02, 0, 0}, {0x5001, 0x83, 0, 0},
> >       {0x3c07, 0x07, 0, 0}, {0x3c08, 0x00, 0, 0},
> > @@ -518,7 +519,7 @@ static const struct reg_value ov5640_setting_1080P_1920_1080[] = {
> >       {0x3a02, 0x04, 0, 0}, {0x3a03, 0x60, 0, 0}, {0x3a08, 0x01, 0, 0},
> >       {0x3a09, 0x50, 0, 0}, {0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x18, 0, 0},
> >       {0x3a0e, 0x03, 0, 0}, {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x04, 0, 0},
> > -     {0x3a15, 0x60, 0, 0}, {0x4713, 0x02, 0, 0}, {0x4407, 0x04, 0, 0},
> > +     {0x3a15, 0x60, 0, 0}, {0x4407, 0x04, 0, 0},
> >       {0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0}, {0x3824, 0x04, 0, 0},
> >       {0x4005, 0x1a, 0, 0}, {0x3008, 0x02, 0, 0},
> >  };
> > @@ -537,7 +538,7 @@ static const struct reg_value ov5640_setting_QSXGA_2592_1944[] = {
> >       {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
> >       {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
> >       {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
> > -     {0x4001, 0x02, 0, 0}, {0x4004, 0x06, 0, 0}, {0x4713, 0x03, 0, 0},
> > +     {0x4001, 0x02, 0, 0}, {0x4004, 0x06, 0, 0},
> >       {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
> >       {0x3824, 0x02, 0, 0}, {0x5001, 0x83, 0, 70},
> >  };
> > @@ -1051,6 +1052,17 @@ static int ov5640_set_jpeg_timings(struct ov5640_dev *sensor,
> >  {
> >       int ret;
> >
> > +     /*
> > +      * compression mode 3 timing
> > +      *
> > +      * Data is transmitted with programmable width (VFIFO_HSIZE).
> > +      * No padding done. Last line may have less data. Varying
> > +      * number of lines per frame, depending on amount of data.
> > +      */
> > +     ret = ov5640_mod_reg(sensor, OV5640_REG_JPEG_MODE_SELECT, 0x7, 0x3);
> > +     if (ret < 0)
> > +             return ret;
> > +
> >       ret = ov5640_write_reg16(sensor, OV5640_REG_VFIFO_HSIZE, mode->hact);
> >       if (ret < 0)
> >               return ret;
>
> --
> Regards,
>
> Sakari Ailus
> sakari.ailus@xxxxxxxxxxxxxxx