Commit 81bf31e2 authored by Wu Fengguang's avatar Wu Fengguang Committed by Takashi Iwai

ALSA: intelhdmi - sticky channel count

Don't change channel count if not necessary.
Signed-off-by: default avatarWu Fengguang <fengguang.wu@intel.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 5779191e
......@@ -422,24 +422,18 @@ static void hdmi_stop_infoframe_trans(struct hda_codec *codec,
AC_DIPXMIT_DISABLE);
}
#ifdef CONFIG_SND_DEBUG_VERBOSE
static int hdmi_get_channel_count(struct hda_codec *codec, hda_nid_t nid)
{
return 1 + snd_hda_codec_read(codec, nid, 0,
AC_VERB_GET_CVT_CHAN_COUNT, 0);
}
#endif
static void hdmi_set_channel_count(struct hda_codec *codec,
hda_nid_t nid, int chs)
{
snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CVT_CHAN_COUNT, chs - 1);
#ifdef CONFIG_SND_DEBUG_VERBOSE
if (chs != hdmi_get_channel_count(codec, nid))
snd_printd(KERN_INFO "HDMI channel count: expect %d, get %d\n",
chs, hdmi_get_channel_count(codec, nid));
#endif
snd_hda_codec_write(codec, nid, 0,
AC_VERB_SET_CVT_CHAN_COUNT, chs - 1);
}
static void hdmi_debug_channel_mapping(struct hda_codec *codec, hda_nid_t nid)
......
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