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| author |   Mengdong Lin <mengdong.lin@intel.com> | 2013-08-26 21:35:31 -0400 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2013-08-27 12:15:17 +0200 |
| commit | 7a624ea56222fc6f6e3ccd135efedc195ba0b28d (patch) | |
| tree | 6501398d8e28348aa039cec3417c066b54fea006 /sound/pci | |
| parent | ALSA: hda - add flags and routines to get devices selection info for DP1.2 MST (diff) | |
| download | linux-dev-7a624ea56222fc6f6e3ccd135efedc195ba0b28d.tar.xz linux-dev-7a624ea56222fc6f6e3ccd135efedc195ba0b28d.zip | |
ALSA: hda - add device list & select info of display pins to codec proc file
If a display codec supports multi-stream transport on the pins, the pin's
device list length and device entries will be exposed to codec proc file.
Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
| -rw-r--r-- | sound/pci/hda/hda_proc.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_proc.c b/sound/pci/hda/hda_proc.c index 9760f001916d..a8cb22eec89e 100644 --- a/sound/pci/hda/hda_proc.c +++ b/sound/pci/hda/hda_proc.c @@ -582,6 +582,36 @@ static void print_gpio(struct snd_info_buffer *buffer, print_nid_array(buffer, codec, nid, &codec->nids); } +static void print_device_list(struct snd_info_buffer *buffer, + struct hda_codec *codec, hda_nid_t nid) +{ + int i, curr = -1; + u8 dev_list[AC_MAX_DEV_LIST_LEN]; + int devlist_len; + + devlist_len = snd_hda_get_devices(codec, nid, dev_list, + AC_MAX_DEV_LIST_LEN); + snd_iprintf(buffer, " Devices: %d\n", devlist_len); + if (devlist_len <= 0) + return; + + curr = snd_hda_codec_read(codec, nid, 0, + AC_VERB_GET_DEVICE_SEL, 0); + + for (i = 0; i < devlist_len; i++) { + if (i == curr) + snd_iprintf(buffer, " *"); + else + snd_iprintf(buffer, " "); + + snd_iprintf(buffer, + "Dev %02d: PD = %d, ELDV = %d, IA = %d\n", i, + !!(dev_list[i] & AC_DE_PD), + !!(dev_list[i] & AC_DE_ELDV), + !!(dev_list[i] & AC_DE_IA)); + } +} + static void print_codec_info(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { @@ -751,6 +781,9 @@ static void print_codec_info(struct snd_info_entry *entry, (wid_caps & AC_WCAP_DELAY) >> AC_WCAP_DELAY_SHIFT); + if (wid_type == AC_WID_PIN && codec->dp_mst) + print_device_list(buffer, codec, nid); + if (wid_caps & AC_WCAP_CONN_LIST) print_conn_list(buffer, codec, nid, wid_type, conn, conn_len); |