On Fri, 2019-10-18 at 14:29 +0300, Alexandru Ardelean wrote:
> From: Dragos Bogdan <dragos.bogdan@xxxxxxxxxx>
>
> The AD7611 chip supports the same Deep Color Mode settings as the AD7604.
> This change extends support for this feature to the AD7611 by adding a
> wrapper function for the `read_hdmi_pixelclock` hook and adding the same
> frequency adjustment logic.
>
ping here
> Signed-off-by: Dragos Bogdan <dragos.bogdan@xxxxxxxxxx>
> Signed-off-by: Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx>
> ---
>
> Changelog v1 -> v2:
> * address checkpatch complaints about 80 col limit and
> use of `unsigned` vs `unsigned int`
>
> drivers/media/i2c/adv7604.c | 32 +++++++++++++++++++++-----------
> 1 file changed, 21 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c
> index 28a84bf9f8a9..c6fe3aa69733 100644
> --- a/drivers/media/i2c/adv7604.c
> +++ b/drivers/media/i2c/adv7604.c
> @@ -1503,23 +1503,14 @@ static void
> adv76xx_fill_optional_dv_timings_fields(struct v4l2_subdev *sd,
>
> static unsigned int adv7604_read_hdmi_pixelclock(struct v4l2_subdev *sd)
> {
> - unsigned int freq;
> int a, b;
>
> a = hdmi_read(sd, 0x06);
> b = hdmi_read(sd, 0x3b);
> if (a < 0 || b < 0)
> return 0;
> - freq = a * 1000000 + ((b & 0x30) >> 4) * 250000;
>
> - if (is_hdmi(sd)) {
> - /* adjust for deep color mode */
> - unsigned bits_per_channel = ((hdmi_read(sd, 0x0b) & 0x60)
> >> 4) + 8;
> -
> - freq = freq * 8 / bits_per_channel;
> - }
> -
> - return freq;
> + return a * 1000000 + ((b & 0x30) >> 4) * 250000;
> }
>
> static unsigned int adv7611_read_hdmi_pixelclock(struct v4l2_subdev *sd)
> @@ -1530,9 +1521,28 @@ static unsigned int
> adv7611_read_hdmi_pixelclock(struct v4l2_subdev *sd)
> b = hdmi_read(sd, 0x52);
> if (a < 0 || b < 0)
> return 0;
> +
> return ((a << 1) | (b >> 7)) * 1000000 + (b & 0x7f) * 1000000 /
> 128;
> }
>
> +static unsigned int adv76xx_read_hdmi_pixelclock(struct v4l2_subdev *sd)
> +{
> + struct adv76xx_state *state = to_state(sd);
> + const struct adv76xx_chip_info *info = state->info;
> + unsigned int freq, bits_per_channel, pixelrepetition;
> +
> + freq = info->read_hdmi_pixelclock(sd);
> + if (is_hdmi(sd)) {
> + /* adjust for deep color mode and pixel repetition */
> + bits_per_channel = ((hdmi_read(sd, 0x0b) & 0x60) >> 4) + 8;
> + pixelrepetition = (hdmi_read(sd, 0x05) & 0x0f) + 1;
> +
> + freq = freq * 8 / bits_per_channel / pixelrepetition;
> + }
> +
> + return freq;
> +}
> +
> static int adv76xx_query_dv_timings(struct v4l2_subdev *sd,
> struct v4l2_dv_timings *timings)
> {
> @@ -1579,7 +1589,7 @@ static int adv76xx_query_dv_timings(struct
> v4l2_subdev *sd,
>
> bt->width = w;
> bt->height = h;
> - bt->pixelclock = info->read_hdmi_pixelclock(sd);
> + bt->pixelclock = adv76xx_read_hdmi_pixelclock(sd);
> bt->hfrontporch = hdmi_read16(sd, 0x20, info-
> >hfrontporch_mask);
> bt->hsync = hdmi_read16(sd, 0x22, info->hsync_mask);
> bt->hbackporch = hdmi_read16(sd, 0x24, info-
> >hbackporch_mask);
