Eric Lee / smarc-ti-linux-kernel

Download as
Browse Code ยป

Commit de9481cb40339d9bfc1104b53649876fc5f3d432

Authored by Kailang Yang
Committed by Takashi Iwai
1 parent 3af5d0524a
Exists in master and in 13 other branches dlt-processor-sdk-linux-03.00.00.04, processor-sdk-linux-02.00.01, smarc-ti-linux-3.15.y, smarc-ti-lsk-linux-4.1.y, smarct3x-processor-sdk-04.01.00.06, smarct3x-processor-sdk-linux-02.00.01, smarct3x-processor-sdk-linux-03.00.00.04, smarct4x-800-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-04.01.00.06, smarct4x-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-linux-03.00.00.04, ti-linux-3.15.y, ti-lsk-linux-4.1.y

ALSA: hda/realtek - Improve HP depop when system change power state on Chromebook 

It is better to change Mic2-Vref to manual mode.
Manual control Mic2-Vref will solve pop noise issue.
It will improve pop noise for power on, power off, S3 and resume.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Showing 1 changed file with 4 additions and 0 deletions Side-by-side Diff

sound/pci/hda/patch_realtek.c
Diff comments   View file @ de9481c
... ... @@ -4005,6 +4005,10 @@
4005 4005 spec->gen.mixer_nid = 0;
4006 4006 break;
4007 4007 case HDA_FIXUP_ACT_INIT:
  4008 + /* MIC2-VREF control */
  4009 + /* Set to manual mode */
  4010 + val = alc_read_coef_idx(codec, 0x06);
  4011 + alc_write_coef_idx(codec, 0x06, val & ~0x000c);
4008 4012 /* Enable Line1 input control by verb */
4009 4013 val = alc_read_coef_idx(codec, 0x1a);
4010 4014 alc_write_coef_idx(codec, 0x1a, val | (1 << 4));