ALSA: Fix sample rate of Lenovo Ideapad to 44.1kHz

Noises can be heard on analog outputs of (some model of) Lenovo
Ideapad due to the hardware problem, and the only workaround right now
is to fix the sample rate to 44.1kHz.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 31 insertions, 3 deletions

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 6325ea43cf0..b794cba494c 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -12845,6 +12845,27 @@ static int alc269_auto_create_analog_input_ctls(struct alc_spec *spec,
 #define alc269_pcm_digital_playback	alc880_pcm_digital_playback
 #define alc269_pcm_digital_capture	alc880_pcm_digital_capture
 
+static struct hda_pcm_stream alc269_44k_pcm_analog_playback = {
+	.substreams = 1,
+	.channels_min = 2,
+	.channels_max = 8,
+	.rates = SNDRV_PCM_RATE_44100, /* fixed rate */
+	/* NID is set in alc_build_pcms */
+	.ops = {
+		.open = alc880_playback_pcm_open,
+		.prepare = alc880_playback_pcm_prepare,
+		.cleanup = alc880_playback_pcm_cleanup
+	},
+};
+
+static struct hda_pcm_stream alc269_44k_pcm_analog_capture = {
+	.substreams = 1,
+	.channels_min = 2,
+	.channels_max = 2,
+	.rates = SNDRV_PCM_RATE_44100, /* fixed rate */
+	/* NID is set in alc_build_pcms */
+};
+
 /*
  * BIOS auto configuration
  */
@@ -13060,9 +13081,16 @@ static int patch_alc269(struct hda_codec *codec)
 		setup_preset(spec, &alc269_presets[board_config]);
 
 	spec->stream_name_analog = "ALC269 Analog";
-	spec->stream_analog_playback = &alc269_pcm_analog_playback;
-	spec->stream_analog_capture = &alc269_pcm_analog_capture;
-
+	if (codec->subsystem_id == 0x17aa3bf8) {
+		/* Due to a hardware problem on Lenovo Ideadpad, we need to
+		 * fix the sample rate of analog I/O to 44.1kHz
+		 */
+		spec->stream_analog_playback = &alc269_44k_pcm_analog_playback;
+		spec->stream_analog_capture = &alc269_44k_pcm_analog_capture;
+	} else {
+		spec->stream_analog_playback = &alc269_pcm_analog_playback;
+		spec->stream_analog_capture = &alc269_pcm_analog_capture;
+	}
 	spec->stream_name_digital = "ALC269 Digital";
 	spec->stream_digital_playback = &alc269_pcm_digital_playback;
 	spec->stream_digital_capture = &alc269_pcm_digital_capture;