This patch adds new ALSA controls to query the LTC state from userspace.
Signed-off-by: Adrian Knoth adi@drcomp.erfurt.thur.de
diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c index 9b5382f..f5ef788 100644 --- a/sound/pci/rme9652/hdspm.c +++ b/sound/pci/rme9652/hdspm.c @@ -2927,6 +2927,112 @@ static int snd_hdspm_get_autosync_ref(struct snd_kcontrol *kcontrol, return 0; }
+ + +#define HDSPM_TCO_VIDEO_INPUT_FORMAT(xname, xindex) \ +{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ + .name = xname, \ + .access = SNDRV_CTL_ELEM_ACCESS_READ |\ + SNDRV_CTL_ELEM_ACCESS_VOLATILE, \ + .info = snd_hdspm_info_tco_video_input_format, \ + .get = snd_hdspm_get_tco_video_input_format, \ +} + +static int snd_hdspm_info_tco_video_input_format(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + static char *texts[] = {"No video", "NTSC", "PAL"}; + ENUMERATED_CTL_INFO(uinfo, texts); + return 0; +} + +static int snd_hdspm_get_tco_video_input_format(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + u32 status; + int ret = 0; + + struct hdspm *hdspm = snd_kcontrol_chip(kcontrol); + status = hdspm_read(hdspm, HDSPM_RD_TCO + 4); + switch (status & (HDSPM_TCO1_Video_Input_Format_NTSC | + HDSPM_TCO1_Video_Input_Format_PAL)) { + case HDSPM_TCO1_Video_Input_Format_NTSC: + /* ntsc */ + ret = 1; + break; + case HDSPM_TCO1_Video_Input_Format_PAL: + /* pal */ + ret = 2; + break; + default: + /* no video */ + ret = 0; + break; + } + ucontrol->value.enumerated.item[0] = ret; + return 0; +} + + + +#define HDSPM_TCO_LTC_FRAMES(xname, xindex) \ +{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ + .name = xname, \ + .access = SNDRV_CTL_ELEM_ACCESS_READ |\ + SNDRV_CTL_ELEM_ACCESS_VOLATILE, \ + .info = snd_hdspm_info_tco_ltc_frames, \ + .get = snd_hdspm_get_tco_ltc_frames, \ +} + +static int snd_hdspm_info_tco_ltc_frames(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + static char *texts[] = {"No lock", "24 fps", "25 fps", "29.97 fps", + "30 fps"}; + ENUMERATED_CTL_INFO(uinfo, texts); + return 0; +} + +static int hdspm_tco_ltc_frames(struct hdspm *hdspm) +{ + u32 status; + int ret = 0; + + status = hdspm_read(hdspm, HDSPM_RD_TCO + 4); + if (status & HDSPM_TCO1_LTC_Input_valid) { + switch (status & (HDSPM_TCO1_LTC_Format_LSB | + HDSPM_TCO1_LTC_Format_MSB)) { + case 0: + /* 24 fps */ + ret = 1; + break; + case HDSPM_TCO1_LTC_Format_LSB: + /* 25 fps */ + ret = 2; + break; + case HDSPM_TCO1_LTC_Format_MSB: + /* 25 fps */ + ret = 3; + break; + default: + /* 30 fps */ + ret = 4; + break; + } + } + + return ret; +} + +static int snd_hdspm_get_tco_ltc_frames(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct hdspm *hdspm = snd_kcontrol_chip(kcontrol); + + ucontrol->value.enumerated.item[0] = hdspm_tco_ltc_frames(hdspm); + return 0; +} + #define HDSPM_TOGGLE_SETTING(xname, xindex) \ { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ .name = xname, \