diff options
| -rw-r--r-- | Documentation/sound/alsa/HD-Audio.txt | 27 | ||||
| -rw-r--r-- | sound/pci/hda/hda_hwdep.c | 53 |
2 files changed, 65 insertions, 15 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 diff --git a/sound/pci/hda/hda_hwdep.c b/sound/pci/hda/hda_hwdep.c index b36919c0d363..a1fc83753cc6 100644 --- a/sound/pci/hda/hda_hwdep.c +++ b/sound/pci/hda/hda_hwdep.c @@ -625,6 +625,10 @@ enum { LINE_MODE_PINCFG, LINE_MODE_VERB, LINE_MODE_HINT, + LINE_MODE_VENDOR_ID, + LINE_MODE_SUBSYSTEM_ID, + LINE_MODE_REVISION_ID, + LINE_MODE_CHIP_NAME, NUM_LINE_MODES, }; @@ -654,53 +658,71 @@ static void parse_codec_mode(char *buf, struct hda_bus *bus, } /* parse the contents after the other command tags, [pincfg], [verb], - * [hint] and [model] + * [vendor_id], [subsystem_id], [revision_id], [chip_name], [hint] and [model] * just pass to the sysfs helper (only when any codec was specified) */ static void parse_pincfg_mode(char *buf, struct hda_bus *bus, struct hda_codec **codecp) { - if (!*codecp) - return; parse_user_pin_configs(*codecp, buf); } static void parse_verb_mode(char *buf, struct hda_bus *bus, struct hda_codec **codecp) { - if (!*codecp) - return; parse_init_verbs(*codecp, buf); } static void parse_hint_mode(char *buf, struct hda_bus *bus, struct hda_codec **codecp) { - if (!*codecp) - return; parse_hints(*codecp, buf); } static void parse_model_mode(char *buf, struct hda_bus *bus, struct hda_codec **codecp) { - if (!*codecp) - return; kfree((*codecp)->modelname); (*codecp)->modelname = kstrdup(buf, GFP_KERNEL); } +static void parse_chip_name_mode(char *buf, struct hda_bus *bus, + struct hda_codec **codecp) +{ + kfree((*codecp)->chip_name); + (*codecp)->chip_name = kstrdup(buf, GFP_KERNEL); +} + +#define DEFINE_PARSE_ID_MODE(name) \ +static void parse_##name##_mode(char *buf, struct hda_bus *bus, \ + struct hda_codec **codecp) \ +{ \ + unsigned long val; \ + if (!strict_strtoul(buf, 0, &val)) \ + (*codecp)->name = val; \ +} + +DEFINE_PARSE_ID_MODE(vendor_id); +DEFINE_PARSE_ID_MODE(subsystem_id); +DEFINE_PARSE_ID_MODE(revision_id); + + struct hda_patch_item { const char *tag; void (*parser)(char *buf, struct hda_bus *bus, struct hda_codec **retc); + int need_codec; }; static struct hda_patch_item patch_items[NUM_LINE_MODES] = { - [LINE_MODE_CODEC] = { "[codec]", parse_codec_mode }, - [LINE_MODE_MODEL] = { "[model]", parse_model_mode }, - [LINE_MODE_VERB] = { "[verb]", parse_verb_mode }, - [LINE_MODE_PINCFG] = { "[pincfg]", parse_pincfg_mode }, - [LINE_MODE_HINT] = { "[hint]", parse_hint_mode }, + [LINE_MODE_CODEC] = { "[codec]", parse_codec_mode, 0 }, + [LINE_MODE_MODEL] = { "[model]", parse_model_mode, 1 }, + [LINE_MODE_VERB] = { "[verb]", parse_verb_mode, 1 }, + [LINE_MODE_PINCFG] = { "[pincfg]", parse_pincfg_mode, 1 }, + [LINE_MODE_HINT] = { "[hint]", parse_hint_mode, 1 }, + [LINE_MODE_VENDOR_ID] = { "[vendor_id]", parse_vendor_id_mode, 1 }, + [LINE_MODE_SUBSYSTEM_ID] = { "[subsystem_id]", parse_subsystem_id_mode, 1 }, + [LINE_MODE_REVISION_ID] = { "[revision_id]", parse_revision_id_mode, 1 }, + [LINE_MODE_CHIP_NAME] = { "[chip_name]", parse_chip_name_mode, 1 }, }; /* check the line starting with '[' -- change the parser mode accodingly */ @@ -783,7 +805,8 @@ int snd_hda_load_patch(struct hda_bus *bus, const char *patch) continue; if (*buf == '[') line_mode = parse_line_mode(buf, bus); - else if (patch_items[line_mode].parser) + else if (patch_items[line_mode].parser && + (codec || !patch_items[line_mode].need_codec)) patch_items[line_mode].parser(buf, bus, &codec); } release_firmware(fw); |