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ALSA: hda - Add patch module option

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Added the patch module option to apply a "patch" as a firmware to
modify pin configurations or give additional hints to the driver
before actually initializing and configuring the codec.

This can be used as a workaround when the BIOS doesn't give sufficient
information or give wrong information that doesn't match with the real
hardware setup, until it's fixed statically in the driver via a quirk.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2009-06-17 09:52:54 +02:00
parent a1e21c9078
commit 4ea6fbc8eb
4 changed files with 258 additions and 22 deletions
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21
sound/pci/hda/hda_intel.c
View File

@ -61,6 +61,9 @@ static int probe_mask[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
static int probe_only[SNDRV_CARDS];
static int single_cmd;
static int enable_msi;
#ifdef CONFIG_SND_HDA_PATCH_LOADER
static char *patch[SNDRV_CARDS];
#endif
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for Intel HD audio interface.");
@ -84,6 +87,10 @@ MODULE_PARM_DESC(single_cmd, "Use single command to communicate with codecs "
"(for debugging only).");
module_param(enable_msi, int, 0444);
MODULE_PARM_DESC(enable_msi, "Enable Message Signaled Interrupt (MSI)");
#ifdef CONFIG_SND_HDA_PATCH_LOADER
module_param_array(patch, charp, NULL, 0444);
MODULE_PARM_DESC(patch, "Patch file for Intel HD audio interface.");
#endif
#ifdef CONFIG_SND_HDA_POWER_SAVE
static int power_save = CONFIG_SND_HDA_POWER_SAVE_DEFAULT;
@ -2468,6 +2475,9 @@ static int __devinit azx_probe(struct pci_dev *pci,
return err;
}
/* set this here since it's referred in snd_hda_load_patch() */
snd_card_set_dev(card, &pci->dev);
err = azx_create(card, pci, dev, pci_id->driver_data, &chip);
if (err < 0)
goto out_free;
@ -2477,6 +2487,15 @@ static int __devinit azx_probe(struct pci_dev *pci,
err = azx_codec_create(chip, model[dev]);
if (err < 0)
goto out_free;
#ifdef CONFIG_SND_HDA_PATCH_LOADER
if (patch[dev]) {
snd_printk(KERN_ERR SFX "Applying patch firmware '%s'\n",
patch[dev]);
err = snd_hda_load_patch(chip->bus, patch[dev]);
if (err < 0)
goto out_free;
}
#endif
if (!probe_only[dev]) {
err = azx_codec_configure(chip);
if (err < 0)
@ -2493,8 +2512,6 @@ static int __devinit azx_probe(struct pci_dev *pci,
if (err < 0)
goto out_free;
snd_card_set_dev(card, &pci->dev);
err = snd_card_register(card);
if (err < 0)
goto out_free;