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authorLinus Torvalds <torvalds@linux-foundation.org>2010-03-01 08:58:44 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-01 08:58:44 -0800
commit524df55725217b13d5a232fb5badb5846418ea0e (patch)
treec041613577ac7e68737cfd8af16a37d1ed37e6af /Documentation/sound/alsa/HD-Audio.txt
parent0f4533979473a456a8adb3869365e12c7a99cf65 (diff)
parent6679ee1870f7ccdd48e2e5c57919240b8f19a6dc (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: (252 commits) ASoC: Check progress when reporting periods from i.MX FIQ handler ASoC: Remove a unused variables from i.MX FIQ runtime data ALSA: hda - Add/fix ALC269 FSC and Quanta models ALSA: hda - Add ALC670 codec support OMAP4: PMIC: Add support for twl6030 codec ALSA: hda - remove unnecessary msleep on power state transitions usb/gadget/{f_audio,gmidi}.c: follow recent changes in audio.h ASoC: fsi: Modify over/under run error settlement ASoC: OMAP4: Add McPDM platform driver ASoC: OMAP4: Add support for McPDM ASoC: OMAP: data_type and sync_mode configurable in audio dma ALSA: hda - Add missing description in HD-Audio-Models.txt ALSA: add support for Macbook Air 2,1 internal speaker ALSA: usbaudio: consolidate header files ALSA: usbmixer: bail out early when parsing audio class v2 descriptors ALSA: usbaudio: implement basic set of class v2.0 parser ALSA: usbaudio: introduce new types for audio class v2 ALSA: usbaudio: parse USB descriptors with structs ALSA: hda - enable snoop for Intel Cougar Point ALSA: hda - Remove identical definitions for macmini3 model ...
Diffstat (limited to 'Documentation/sound/alsa/HD-Audio.txt')
-rw-r--r--Documentation/sound/alsa/HD-Audio.txt27
1 files changed, 27 insertions, 0 deletions
diff --git a/Documentation/sound/alsa/HD-Audio.txt b/Documentation/sound/alsa/HD-Audio.txt
index 6325bec06a72..f4dd3bf99d12 100644
--- a/Documentation/sound/alsa/HD-Audio.txt
+++ b/Documentation/sound/alsa/HD-Audio.txt
@@ -452,6 +452,33 @@ Similarly, the lines after `[verb]` are parsed as `init_verbs`
sysfs entries, and the lines after `[hint]` are parsed as `hints`
sysfs entries, respectively.
+Another example to override the codec vendor id from 0x12345678 to
+0xdeadbeef is like below:
+------------------------------------------------------------------------
+ [codec]
+ 0x12345678 0xabcd1234 2
+
+ [vendor_id]
+ 0xdeadbeef
+------------------------------------------------------------------------
+
+In the similar way, you can override the codec subsystem_id via
+`[subsystem_id]`, the revision id via `[revision_id]` line.
+Also, the codec chip name can be rewritten via `[chip_name]` line.
+------------------------------------------------------------------------
+ [codec]
+ 0x12345678 0xabcd1234 2
+
+ [subsystem_id]
+ 0xffff1111
+
+ [revision_id]
+ 0x10
+
+ [chip_name]
+ My-own NEWS-0002
+------------------------------------------------------------------------
+
The hd-audio driver reads the file via request_firmware(). Thus,
a patch file has to be located on the appropriate firmware path,
typically, /lib/firmware. For example, when you pass the option