It turns up the autodetection for the video standard in the au8522 is prone to hanging the chip until a reset is performed. This condition is trivial to reproduce simply by tuning to a station and then rapidly unplugging/ replugging the coax feed. Because we've never claimed to support anything other than NTSC-M, just disable the video-standard autodetection logic and force it to always be NTSC-M. Signed-off-by: Devin Heitmueller <dheitmueller@xxxxxxxxxxxxxx> --- drivers/media/dvb/frontends/au8522_decoder.c | 6 +++- drivers/media/dvb/frontends/au8522_priv.h | 28 +++++++++++++++++++++++-- 2 files changed, 29 insertions(+), 5 deletions(-) diff --git a/drivers/media/dvb/frontends/au8522_decoder.c b/drivers/media/dvb/frontends/au8522_decoder.c index 55b6390..f2e786b 100644 --- a/drivers/media/dvb/frontends/au8522_decoder.c +++ b/drivers/media/dvb/frontends/au8522_decoder.c @@ -257,9 +257,11 @@ static void setup_decoder_defaults(struct au8522_state *state, u8 input_mode) au8522_writereg(state, AU8522_TVDED_DBG_MODE_REG060H, AU8522_TVDED_DBG_MODE_REG060H_CVBS); au8522_writereg(state, AU8522_TVDEC_FORMAT_CTRL1_REG061H, - AU8522_TVDEC_FORMAT_CTRL1_REG061H_CVBS13); + AU8522_TVDEC_FORMAT_CTRL1_REG061H_FIELD_LEN_525 | + AU8522_TVDEC_FORMAT_CTRL1_REG061H_LINE_LEN_63_492 | + AU8522_TVDEC_FORMAT_CTRL1_REG061H_SUBCARRIER_NTSC_MN); au8522_writereg(state, AU8522_TVDEC_FORMAT_CTRL2_REG062H, - AU8522_TVDEC_FORMAT_CTRL2_REG062H_CVBS13); + AU8522_TVDEC_FORMAT_CTRL2_REG062H_STD_NTSC); au8522_writereg(state, AU8522_TVDEC_VCR_DET_LLIM_REG063H, AU8522_TVDEC_VCR_DET_LLIM_REG063H_CVBS); au8522_writereg(state, AU8522_TVDEC_VCR_DET_HLIM_REG064H, diff --git a/drivers/media/dvb/frontends/au8522_priv.h b/drivers/media/dvb/frontends/au8522_priv.h index 6e4a438..9f44a7b 100644 --- a/drivers/media/dvb/frontends/au8522_priv.h +++ b/drivers/media/dvb/frontends/au8522_priv.h @@ -325,6 +325,31 @@ int au8522_led_ctrl(struct au8522_state *state, int led); /**************************************************************/ +/* Format control 1 */ + +/* VCR Mode 7-6 */ +#define AU8522_TVDEC_FORMAT_CTRL1_REG061H_VCR_MODE_YES 0x80 +#define AU8522_TVDEC_FORMAT_CTRL1_REG061H_VCR_MODE_NO 0x40 +#define AU8522_TVDEC_FORMAT_CTRL1_REG061H_VCR_MODE_AUTO 0x00 +/* Field len 5-4 */ +#define AU8522_TVDEC_FORMAT_CTRL1_REG061H_FIELD_LEN_625 0x20 +#define AU8522_TVDEC_FORMAT_CTRL1_REG061H_FIELD_LEN_525 0x10 +#define AU8522_TVDEC_FORMAT_CTRL1_REG061H_FIELD_LEN_AUTO 0x00 +/* Line len (us) 3-2 */ +#define AU8522_TVDEC_FORMAT_CTRL1_REG061H_LINE_LEN_64_000 0x0b +#define AU8522_TVDEC_FORMAT_CTRL1_REG061H_LINE_LEN_63_492 0x08 +#define AU8522_TVDEC_FORMAT_CTRL1_REG061H_LINE_LEN_63_556 0x04 +/* Subcarrier freq 1-0 */ +#define AU8522_TVDEC_FORMAT_CTRL1_REG061H_SUBCARRIER_NTSC_AUTO 0x03 +#define AU8522_TVDEC_FORMAT_CTRL1_REG061H_SUBCARRIER_NTSC_443 0x02 +#define AU8522_TVDEC_FORMAT_CTRL1_REG061H_SUBCARRIER_NTSC_MN 0x01 +#define AU8522_TVDEC_FORMAT_CTRL1_REG061H_SUBCARRIER_NTSC_50 0x00 + +/* Format control 2 */ +#define AU8522_TVDEC_FORMAT_CTRL2_REG062H_STD_AUTODETECT 0x00 +#define AU8522_TVDEC_FORMAT_CTRL2_REG062H_STD_NTSC 0x01 + + #define AU8522_INPUT_CONTROL_REG081H_ATSC 0xC4 #define AU8522_INPUT_CONTROL_REG081H_ATVRF 0xC4 #define AU8522_INPUT_CONTROL_REG081H_ATVRF13 0xC4 @@ -385,9 +410,6 @@ int au8522_led_ctrl(struct au8522_state *state, int led); #define AU8522_TVDEC_COMB_MODE_REG015H_CVBS 0x00 #define AU8522_REG016H_CVBS 0x00 #define AU8522_TVDED_DBG_MODE_REG060H_CVBS 0x00 -#define AU8522_TVDEC_FORMAT_CTRL1_REG061H_CVBS 0x0B -#define AU8522_TVDEC_FORMAT_CTRL1_REG061H_CVBS13 0x03 -#define AU8522_TVDEC_FORMAT_CTRL2_REG062H_CVBS13 0x00 #define AU8522_TVDEC_VCR_DET_LLIM_REG063H_CVBS 0x19 #define AU8522_REG0F9H_AUDIO 0x20 #define AU8522_TVDEC_VCR_DET_HLIM_REG064H_CVBS 0xA7 -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
