ALSA: hda - disable amp override on non-HP machines

Some machines with Cx5045 seem to have no problem with the volume
over 0dB on NID 0x17.  Disable amp overrides for other devices but HP.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

1 files changed, 13 insertions, 9 deletions

diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
index e3df8ac37076..64df8100593d 100644
--- a/sound/pci/hda/patch_conexant.c
+++ b/sound/pci/hda/patch_conexant.c
@@ -1005,15 +1005,19 @@ static int patch_cxt5045(struct hda_codec *codec)
 #endif  
         }
 
-        /*
-         * Fix max PCM level to 0 dB
-         * (originall it has 0x2b steps with 0dB offset 0x14)
-         */
-        snd_hda_override_amp_caps(codec, 0x17, HDA_INPUT,
-                                  (0x14 << AC_AMPCAP_OFFSET_SHIFT) |
-                                  (0x14 << AC_AMPCAP_NUM_STEPS_SHIFT) |
-                                  (0x05 << AC_AMPCAP_STEP_SIZE_SHIFT) |
-                                  (1 << AC_AMPCAP_MUTE_SHIFT));
+        switch (codec->subsystem_id >> 16) {
+        case 0x103c:
+                /* HP laptop has a really bad sound over 0dB on NID 0x17.
+                 * Fix max PCM level to 0 dB
+                 * (originall it has 0x2b steps with 0dB offset 0x14)
+                 */
+                snd_hda_override_amp_caps(codec, 0x17, HDA_INPUT,
+                                          (0x14 << AC_AMPCAP_OFFSET_SHIFT) |
+                                          (0x14 << AC_AMPCAP_NUM_STEPS_SHIFT) |
+                                          (0x05 << AC_AMPCAP_STEP_SIZE_SHIFT) |
+                                          (1 << AC_AMPCAP_MUTE_SHIFT));
+                break;
+        }
 
         return 0;
 }