From 923137a4037d1b9f19d175708eeced209dff9320 Mon Sep 17 00:00:00 2001 From: Istvan Varga Date: Sat, 4 Jun 2011 12:15:51 -0300 Subject: [PATCH] [media] xc4000: added audio_std module parameter The 'audio_std' module parameter makes it possible to fine tune some audio related aspects of the driver, like setting the exact audio standard (NICAM, A2, etc.) to be used for some video standards. Signed-off-by: Istvan Varga Signed-off-by: Mauro Carvalho Chehab --- drivers/media/common/tuners/xc4000.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/media/common/tuners/xc4000.c b/drivers/media/common/tuners/xc4000.c index bf3f6f1..2a20d0e 100644 --- a/drivers/media/common/tuners/xc4000.c +++ b/drivers/media/common/tuners/xc4000.c @@ -49,6 +49,27 @@ MODULE_PARM_DESC(no_poweroff, "\n\t\t1: keep device energized and with tuner " "\t\t2: powers device off when not used.\n" "\t\t0 (default): use device-specific default mode."); +#define XC4000_AUDIO_STD_B 1 +#define XC4000_AUDIO_STD_A2 2 +#define XC4000_AUDIO_STD_K3 4 +#define XC4000_AUDIO_STD_L 8 +#define XC4000_AUDIO_STD_INPUT1 16 +#define XC4000_AUDIO_STD_MONO 32 + +static int audio_std; +module_param(audio_std, int, 0644); +MODULE_PARM_DESC(audio_std, "\n\t\tAudio standard. XC4000 audio decoder " + "explicitly needs to know\n" + "\t\twhat audio standard is needed for some video standards with\n" + "\t\taudio A2 or NICAM.\n" + "\t\tThe valid settings are a sum of:\n" + "\t\t 1: use NICAM/B or A2/B instead of NICAM/A or A2/A\n" + "\t\t 2: use A2 instead of NICAM or BTSC\n" + "\t\t 4: use SECAM/K3 instead of K1\n" + "\t\t 8: use PAL-D/K audio for SECAM-D/K\n" + "\t\t16: use FM radio input 1 instead of input 2\n" + "\t\t32: use mono audio (the lower three bits are ignored)"); + #define XC4000_DEFAULT_FIRMWARE "xc4000.fw" static char firmware_name[30]; @@ -1343,6 +1364,8 @@ tune_channel: if (priv->card_type == XC4000_CARD_WINFAST_CX88 && priv->firm_version == 0x0102) video_mode &= 0xFEFF; + if (audio_std & XC4000_AUDIO_STD_B) + video_mode |= 0x0080; } ret = xc_SetTVStandard(priv, video_mode, audio_mode); if (ret != XC_RESULT_SUCCESS) { -- 2.7.4