ALSA: hdspm - Add ALSA controls to read the TCO LTC state
This patch adds new ALSA controls to query the LTC state from userspace.
Signed-off-by: Adrian Knoth <adi@drcomp.erfurt.thur.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c
index 8b7c9fb..e23572d 100644
--- a/sound/pci/rme9652/hdspm.c
+++ b/sound/pci/rme9652/hdspm.c
@@ -2930,6 +2930,112 @@
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, \