Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
ALSA: hda - Add upper-limit of mixer amp for AD1884A-laptop model, too
Add the upper-limit of mixer amp for AD1884A-laptop model just like
the mobile model for some HP laptops.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
+8
sound/pci/hda/patch_analog.c
+8
sound/pci/hda/patch_analog.c
···
3977
3977
spec->input_mux = &ad1884a_laptop_capture_source;
3978
3978
codec->patch_ops.unsol_event = ad1884a_hp_unsol_event;
3979
3979
codec->patch_ops.init = ad1884a_hp_init;
3980
+
/* set the upper-limit for mixer amp to 0dB for avoiding the
3981
+
* possible damage by overloading
3982
+
*/
3983
+
snd_hda_override_amp_caps(codec, 0x20, HDA_INPUT,
3984
+
(0x17 << AC_AMPCAP_OFFSET_SHIFT) |
3985
+
(0x17 << AC_AMPCAP_NUM_STEPS_SHIFT) |
3986
+
(0x05 << AC_AMPCAP_STEP_SIZE_SHIFT) |
3987
+
(1 << AC_AMPCAP_MUTE_SHIFT));
3980
3988
break;
3981
3989
case AD1884A_MOBILE:
3982
3990
spec->mixers[0] = ad1884a_mobile_mixers;