diff options
Diffstat (limited to 'drivers/media/i2c/adv7604.c')
| -rw-r--r-- | drivers/media/i2c/adv7604.c | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c index 2dedd6ebb236..09004d928d11 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); |