projects / ipfire-2.x.git / blame
| Commit | Line | Data |
|---|---|---|
| 2cb7cef9 BS |
1 | From 13c989beba166b470b1e6b0fa117148bcbfa3dd1 Mon Sep 17 00:00:00 2001 |
| 2 | From: Takashi Iwai <tiwai@suse.de> | |
| 3 | Date: Mon, 23 Feb 2009 11:33:34 +0100 | |
| 4 | Subject: ALSA: hda - Don't give over 0dB volume for AD1984A HP laptops | |
| 5 | Patch-mainline: | |
| 6 | References: bnc#478158 | |
| 7 | ||
| 8 | Set the upper limit 0dB to the volume of mixer amp 0x20 for | |
| 9 | AD1984A HP laptops. The overloaded volume may damage the internal | |
| 10 | speaker. | |
| 11 | ||
| 12 | Update Wed Apr 1 18:33:51 EDT 2009 jeffm: | |
| 13 | - Added the workaround to AD1884A_MOBILE as well. | |
| 14 | ||
| 15 | Signed-off-by: Takashi Iwai <tiwai@suse.de> | |
| 16 | ||
| 17 | --- | |
| 18 | sound/pci/hda/patch_analog.c | 16 ++++++++++++++++ | |
| 19 | 1 file changed, 16 insertions(+) | |
| 20 | ||
| 21 | --- a/sound/pci/hda/patch_analog.c | |
| 22 | +++ b/sound/pci/hda/patch_analog.c | |
| 23 | @@ -3959,6 +3959,14 @@ static int patch_ad1884a(struct hda_code | |
| 24 | spec->input_mux = &ad1884a_laptop_capture_source; | |
| 25 | codec->patch_ops.unsol_event = ad1884a_hp_unsol_event; | |
| 26 | codec->patch_ops.init = ad1884a_hp_init; | |
| 27 | + /* set the upper-limit for mixer amp to 0dB for avoiding the | |
| 28 | + * possible damage by overloading | |
| 29 | + */ | |
| 30 | + snd_hda_override_amp_caps(codec, 0x20, HDA_INPUT, | |
| 31 | + (0x17 << AC_AMPCAP_OFFSET_SHIFT) | | |
| 32 | + (0x17 << AC_AMPCAP_NUM_STEPS_SHIFT) | | |
| 33 | + (0x05 << AC_AMPCAP_STEP_SIZE_SHIFT) | | |
| 34 | + (1 << AC_AMPCAP_MUTE_SHIFT)); | |
| 35 | break; | |
| 36 | case AD1884A_MOBILE: | |
| 37 | spec->mixers[0] = ad1884a_mobile_mixers; | |
| 38 | @@ -3966,6 +3974,14 @@ static int patch_ad1884a(struct hda_code | |
| 39 | spec->multiout.dig_out_nid = 0; | |
| 40 | codec->patch_ops.unsol_event = ad1884a_hp_unsol_event; | |
| 41 | codec->patch_ops.init = ad1884a_hp_init; | |
| 42 | + /* set the upper-limit for mixer amp to 0dB for avoiding the | |
| 43 | + * possible damage by overloading | |
| 44 | + */ | |
| 45 | + snd_hda_override_amp_caps(codec, 0x20, HDA_INPUT, | |
| 46 | + (0x17 << AC_AMPCAP_OFFSET_SHIFT) | | |
| 47 | + (0x17 << AC_AMPCAP_NUM_STEPS_SHIFT) | | |
| 48 | + (0x05 << AC_AMPCAP_STEP_SIZE_SHIFT) | | |
| 49 | + (1 << AC_AMPCAP_MUTE_SHIFT)); | |
| 50 | break; | |
| 51 | case AD1884A_THINKPAD: | |
| 52 | spec->mixers[0] = ad1984a_thinkpad_mixers; |