On 01/13/2016 05:18 PM, Jean-Michel Hautbois wrote:
> Use the helper to enumerate and set DV timings instead of a custom code.
> This will ease debugging too, as it is consistent with other drivers.
>
> Signed-off-by: Jean-Michel Hautbois <jean-michel.hautbois@xxxxxxxxxxxx>
Close, but no cigar. You missed the V4L2_DV_BT_CEA_1280X720P30 exception:
that format is not supported by the adv hardware and needs to be filtered
out. See adv7842_check_dv_timings in adv7842.c and copy it over to the
adv7604. That format has a very large blanking period, exceeding the number
of bits for the corresponding ADV counter in the hardware.
Regards,
Hans
> ---
> drivers/media/i2c/adv7604.c | 98 +++++++++++++++++++++++----------------------
> 1 file changed, 51 insertions(+), 47 deletions(-)
>
> diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c
> index 7452862..19c1ccf 100644
> --- a/drivers/media/i2c/adv7604.c
> +++ b/drivers/media/i2c/adv7604.c
> @@ -806,6 +806,36 @@ static inline bool is_digital_input(struct v4l2_subdev *sd)
> state->selected_input == ADV7604_PAD_HDMI_PORT_D;
> }
>
> +static const struct v4l2_dv_timings_cap adv7604_timings_cap_analog = {
> + .type = V4L2_DV_BT_656_1120,
> + /* keep this initialization for compatibility with GCC < 4.4.6 */
> + .reserved = { 0 },
> + V4L2_INIT_BT_TIMINGS(0, 1920, 0, 1200, 25000000, 170000000,
> + V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
> + V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT,
> + V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_REDUCED_BLANKING |
> + V4L2_DV_BT_CAP_CUSTOM)
> +};
> +
> +static const struct v4l2_dv_timings_cap adv76xx_timings_cap_digital = {
> + .type = V4L2_DV_BT_656_1120,
> + /* keep this initialization for compatibility with GCC < 4.4.6 */
> + .reserved = { 0 },
> + V4L2_INIT_BT_TIMINGS(0, 1920, 0, 1200, 25000000, 225000000,
> + V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
> + V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT,
> + V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_REDUCED_BLANKING |
> + V4L2_DV_BT_CAP_CUSTOM)
> +};
> +
> +static inline const struct v4l2_dv_timings_cap *
> +adv76xx_get_dv_timings_cap(struct v4l2_subdev *sd)
> +{
> + return is_digital_input(sd) ? &adv76xx_timings_cap_digital :
> + &adv7604_timings_cap_analog;
> +}
> +
> +
> /* ----------------------------------------------------------------------- */
>
> #ifdef CONFIG_VIDEO_ADV_DEBUG
> @@ -1330,17 +1360,23 @@ static int stdi2dv_timings(struct v4l2_subdev *sd,
> u32 pix_clk;
> int i;
>
> - for (i = 0; adv76xx_timings[i].bt.height; i++) {
> - if (vtotal(&adv76xx_timings[i].bt) != stdi->lcf + 1)
> + for (i = 0; v4l2_dv_timings_presets[i].bt.width; i++) {
> + const struct v4l2_bt_timings *bt = &v4l2_dv_timings_presets[i].bt;
> +
> + if (!v4l2_valid_dv_timings(&v4l2_dv_timings_presets[i],
> + adv76xx_get_dv_timings_cap(sd),
> + NULL, NULL))
> + continue;
> + if (vtotal(bt) != stdi->lcf + 1)
> continue;
> - if (adv76xx_timings[i].bt.vsync != stdi->lcvs)
> + if (bt->vsync != stdi->lcvs)
> continue;
>
> - pix_clk = hfreq * htotal(&adv76xx_timings[i].bt);
> + pix_clk = hfreq * htotal(bt);
>
> - if ((pix_clk < adv76xx_timings[i].bt.pixelclock + 1000000) &&
> - (pix_clk > adv76xx_timings[i].bt.pixelclock - 1000000)) {
> - *timings = adv76xx_timings[i];
> + if ((pix_clk < bt->pixelclock + 1000000) &&
> + (pix_clk > bt->pixelclock - 1000000)) {
> + *timings = v4l2_dv_timings_presets[i];
> return 0;
> }
> }
> @@ -1431,9 +1467,8 @@ static int adv76xx_enum_dv_timings(struct v4l2_subdev *sd,
> if (timings->pad >= state->source_pad)
> return -EINVAL;
>
> - memset(timings->reserved, 0, sizeof(timings->reserved));
> - timings->timings = adv76xx_timings[timings->index];
> - return 0;
> + return v4l2_enum_dv_timings_cap(timings,
> + adv76xx_get_dv_timings_cap(sd), NULL, NULL);
> }
>
> static int adv76xx_dv_timings_cap(struct v4l2_subdev *sd,
> @@ -1444,29 +1479,7 @@ static int adv76xx_dv_timings_cap(struct v4l2_subdev *sd,
> if (cap->pad >= state->source_pad)
> return -EINVAL;
>
> - cap->type = V4L2_DV_BT_656_1120;
> - cap->bt.max_width = 1920;
> - cap->bt.max_height = 1200;
> - cap->bt.min_pixelclock = 25000000;
> -
> - switch (cap->pad) {
> - case ADV76XX_PAD_HDMI_PORT_A:
> - case ADV7604_PAD_HDMI_PORT_B:
> - case ADV7604_PAD_HDMI_PORT_C:
> - case ADV7604_PAD_HDMI_PORT_D:
> - cap->bt.max_pixelclock = 225000000;
> - break;
> - case ADV7604_PAD_VGA_RGB:
> - case ADV7604_PAD_VGA_COMP:
> - default:
> - cap->bt.max_pixelclock = 170000000;
> - break;
> - }
> -
> - cap->bt.standards = V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
> - V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT;
> - cap->bt.capabilities = V4L2_DV_BT_CAP_PROGRESSIVE |
> - V4L2_DV_BT_CAP_REDUCED_BLANKING | V4L2_DV_BT_CAP_CUSTOM;
> + *cap = *adv76xx_get_dv_timings_cap(sd);
> return 0;
> }
>
> @@ -1475,15 +1488,9 @@ static int adv76xx_dv_timings_cap(struct v4l2_subdev *sd,
> static void adv76xx_fill_optional_dv_timings_fields(struct v4l2_subdev *sd,
> struct v4l2_dv_timings *timings)
> {
> - int i;
> -
> - for (i = 0; adv76xx_timings[i].bt.width; i++) {
> - if (v4l2_match_dv_timings(timings, &adv76xx_timings[i],
> - is_digital_input(sd) ? 250000 : 1000000, false)) {
> - *timings = adv76xx_timings[i];
> - break;
> - }
> - }
> + v4l2_find_dv_timings_cap(timings, adv76xx_get_dv_timings_cap(sd),
> + is_digital_input(sd) ? 250000 : 1000000,
> + NULL, NULL);
> }
>
> static unsigned int adv7604_read_hdmi_pixelclock(struct v4l2_subdev *sd)
> @@ -1651,12 +1658,9 @@ static int adv76xx_s_dv_timings(struct v4l2_subdev *sd,
>
> bt = &timings->bt;
>
> - if ((is_analog_input(sd) && bt->pixelclock > 170000000) ||
> - (is_digital_input(sd) && bt->pixelclock > 225000000)) {
> - v4l2_dbg(1, debug, sd, "%s: pixelclock out of range %d\n",
> - __func__, (u32)bt->pixelclock);
> + if (!v4l2_valid_dv_timings(timings, adv76xx_get_dv_timings_cap(sd),
> + NULL, NULL))
> return -ERANGE;
> - }
>
> adv76xx_fill_optional_dv_timings_fields(sd, timings);
>
>
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