792 lines
19 KiB
C
792 lines
19 KiB
C
/*
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* HWDEP Interface for HD-audio codec
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*
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* Copyright (c) 2007 Takashi Iwai <tiwai@suse.de>
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*
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* This driver is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This driver is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/pci.h>
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#include <linux/compat.h>
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#include <linux/mutex.h>
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#include <linux/ctype.h>
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#include <linux/firmware.h>
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#include <sound/core.h>
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#include "hda_codec.h"
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#include "hda_local.h"
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#include <sound/hda_hwdep.h>
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#include <sound/minors.h>
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/* hint string pair */
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struct hda_hint {
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const char *key;
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const char *val; /* contained in the same alloc as key */
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};
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/*
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* write/read an out-of-bound verb
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*/
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static int verb_write_ioctl(struct hda_codec *codec,
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struct hda_verb_ioctl __user *arg)
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{
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u32 verb, res;
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if (get_user(verb, &arg->verb))
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return -EFAULT;
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res = snd_hda_codec_read(codec, verb >> 24, 0,
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(verb >> 8) & 0xffff, verb & 0xff);
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if (put_user(res, &arg->res))
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return -EFAULT;
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return 0;
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}
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static int get_wcap_ioctl(struct hda_codec *codec,
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struct hda_verb_ioctl __user *arg)
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{
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u32 verb, res;
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if (get_user(verb, &arg->verb))
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return -EFAULT;
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res = get_wcaps(codec, verb >> 24);
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if (put_user(res, &arg->res))
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return -EFAULT;
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return 0;
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}
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/*
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*/
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static int hda_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
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unsigned int cmd, unsigned long arg)
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{
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struct hda_codec *codec = hw->private_data;
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void __user *argp = (void __user *)arg;
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switch (cmd) {
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case HDA_IOCTL_PVERSION:
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return put_user(HDA_HWDEP_VERSION, (int __user *)argp);
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case HDA_IOCTL_VERB_WRITE:
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return verb_write_ioctl(codec, argp);
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case HDA_IOCTL_GET_WCAP:
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return get_wcap_ioctl(codec, argp);
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}
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return -ENOIOCTLCMD;
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}
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#ifdef CONFIG_COMPAT
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static int hda_hwdep_ioctl_compat(struct snd_hwdep *hw, struct file *file,
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unsigned int cmd, unsigned long arg)
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{
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return hda_hwdep_ioctl(hw, file, cmd, (unsigned long)compat_ptr(arg));
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}
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#endif
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static int hda_hwdep_open(struct snd_hwdep *hw, struct file *file)
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{
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#ifndef CONFIG_SND_DEBUG_VERBOSE
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if (!capable(CAP_SYS_RAWIO))
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return -EACCES;
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#endif
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return 0;
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}
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static void clear_hwdep_elements(struct hda_codec *codec)
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{
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int i;
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/* clear init verbs */
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snd_array_free(&codec->init_verbs);
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/* clear hints */
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for (i = 0; i < codec->hints.used; i++) {
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struct hda_hint *hint = snd_array_elem(&codec->hints, i);
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kfree(hint->key); /* we don't need to free hint->val */
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}
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snd_array_free(&codec->hints);
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snd_array_free(&codec->user_pins);
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}
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static void hwdep_free(struct snd_hwdep *hwdep)
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{
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clear_hwdep_elements(hwdep->private_data);
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}
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int /*__devinit*/ snd_hda_create_hwdep(struct hda_codec *codec)
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{
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char hwname[16];
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struct snd_hwdep *hwdep;
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int err;
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sprintf(hwname, "HDA Codec %d", codec->addr);
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err = snd_hwdep_new(codec->bus->card, hwname, codec->addr, &hwdep);
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if (err < 0)
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return err;
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codec->hwdep = hwdep;
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sprintf(hwdep->name, "HDA Codec %d", codec->addr);
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hwdep->iface = SNDRV_HWDEP_IFACE_HDA;
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hwdep->private_data = codec;
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hwdep->private_free = hwdep_free;
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hwdep->exclusive = 1;
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hwdep->ops.open = hda_hwdep_open;
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hwdep->ops.ioctl = hda_hwdep_ioctl;
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#ifdef CONFIG_COMPAT
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hwdep->ops.ioctl_compat = hda_hwdep_ioctl_compat;
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#endif
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snd_array_init(&codec->init_verbs, sizeof(struct hda_verb), 32);
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snd_array_init(&codec->hints, sizeof(struct hda_hint), 32);
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snd_array_init(&codec->user_pins, sizeof(struct hda_pincfg), 16);
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return 0;
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}
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#ifdef CONFIG_SND_HDA_POWER_SAVE
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static ssize_t power_on_acct_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct snd_hwdep *hwdep = dev_get_drvdata(dev);
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struct hda_codec *codec = hwdep->private_data;
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snd_hda_update_power_acct(codec);
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return sprintf(buf, "%u\n", jiffies_to_msecs(codec->power_on_acct));
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}
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static ssize_t power_off_acct_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct snd_hwdep *hwdep = dev_get_drvdata(dev);
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struct hda_codec *codec = hwdep->private_data;
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snd_hda_update_power_acct(codec);
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return sprintf(buf, "%u\n", jiffies_to_msecs(codec->power_off_acct));
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}
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static struct device_attribute power_attrs[] = {
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__ATTR_RO(power_on_acct),
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__ATTR_RO(power_off_acct),
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};
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int snd_hda_hwdep_add_power_sysfs(struct hda_codec *codec)
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{
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struct snd_hwdep *hwdep = codec->hwdep;
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int i;
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for (i = 0; i < ARRAY_SIZE(power_attrs); i++)
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snd_add_device_sysfs_file(SNDRV_DEVICE_TYPE_HWDEP, hwdep->card,
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hwdep->device, &power_attrs[i]);
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return 0;
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}
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#endif /* CONFIG_SND_HDA_POWER_SAVE */
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#ifdef CONFIG_SND_HDA_RECONFIG
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/*
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* sysfs interface
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*/
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static int clear_codec(struct hda_codec *codec)
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{
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int err;
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err = snd_hda_codec_reset(codec);
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if (err < 0) {
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snd_printk(KERN_ERR "The codec is being used, can't free.\n");
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return err;
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}
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clear_hwdep_elements(codec);
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return 0;
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}
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static int reconfig_codec(struct hda_codec *codec)
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{
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int err;
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snd_hda_power_up(codec);
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snd_printk(KERN_INFO "hda-codec: reconfiguring\n");
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err = snd_hda_codec_reset(codec);
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if (err < 0) {
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snd_printk(KERN_ERR
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"The codec is being used, can't reconfigure.\n");
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goto error;
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}
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err = snd_hda_codec_configure(codec);
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if (err < 0)
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goto error;
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/* rebuild PCMs */
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err = snd_hda_codec_build_pcms(codec);
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if (err < 0)
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goto error;
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/* rebuild mixers */
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err = snd_hda_codec_build_controls(codec);
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if (err < 0)
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goto error;
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err = snd_card_register(codec->bus->card);
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error:
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snd_hda_power_down(codec);
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return err;
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}
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/*
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* allocate a string at most len chars, and remove the trailing EOL
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*/
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static char *kstrndup_noeol(const char *src, size_t len)
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{
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char *s = kstrndup(src, len, GFP_KERNEL);
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char *p;
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if (!s)
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return NULL;
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p = strchr(s, '\n');
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if (p)
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*p = 0;
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return s;
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}
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#define CODEC_INFO_SHOW(type) \
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static ssize_t type##_show(struct device *dev, \
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struct device_attribute *attr, \
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char *buf) \
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{ \
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struct snd_hwdep *hwdep = dev_get_drvdata(dev); \
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struct hda_codec *codec = hwdep->private_data; \
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return sprintf(buf, "0x%x\n", codec->type); \
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}
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#define CODEC_INFO_STR_SHOW(type) \
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static ssize_t type##_show(struct device *dev, \
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struct device_attribute *attr, \
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char *buf) \
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{ \
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struct snd_hwdep *hwdep = dev_get_drvdata(dev); \
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struct hda_codec *codec = hwdep->private_data; \
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return sprintf(buf, "%s\n", \
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codec->type ? codec->type : ""); \
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}
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CODEC_INFO_SHOW(vendor_id);
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CODEC_INFO_SHOW(subsystem_id);
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CODEC_INFO_SHOW(revision_id);
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CODEC_INFO_SHOW(afg);
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CODEC_INFO_SHOW(mfg);
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CODEC_INFO_STR_SHOW(vendor_name);
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CODEC_INFO_STR_SHOW(chip_name);
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CODEC_INFO_STR_SHOW(modelname);
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#define CODEC_INFO_STORE(type) \
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static ssize_t type##_store(struct device *dev, \
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struct device_attribute *attr, \
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const char *buf, size_t count) \
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{ \
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struct snd_hwdep *hwdep = dev_get_drvdata(dev); \
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struct hda_codec *codec = hwdep->private_data; \
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char *after; \
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codec->type = simple_strtoul(buf, &after, 0); \
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return count; \
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}
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#define CODEC_INFO_STR_STORE(type) \
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static ssize_t type##_store(struct device *dev, \
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struct device_attribute *attr, \
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const char *buf, size_t count) \
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{ \
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struct snd_hwdep *hwdep = dev_get_drvdata(dev); \
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struct hda_codec *codec = hwdep->private_data; \
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char *s = kstrndup_noeol(buf, 64); \
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if (!s) \
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return -ENOMEM; \
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kfree(codec->type); \
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codec->type = s; \
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return count; \
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}
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CODEC_INFO_STORE(vendor_id);
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CODEC_INFO_STORE(subsystem_id);
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CODEC_INFO_STORE(revision_id);
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CODEC_INFO_STR_STORE(vendor_name);
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CODEC_INFO_STR_STORE(chip_name);
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CODEC_INFO_STR_STORE(modelname);
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#define CODEC_ACTION_STORE(type) \
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static ssize_t type##_store(struct device *dev, \
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struct device_attribute *attr, \
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const char *buf, size_t count) \
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{ \
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struct snd_hwdep *hwdep = dev_get_drvdata(dev); \
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struct hda_codec *codec = hwdep->private_data; \
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int err = 0; \
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if (*buf) \
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err = type##_codec(codec); \
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return err < 0 ? err : count; \
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}
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CODEC_ACTION_STORE(reconfig);
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CODEC_ACTION_STORE(clear);
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static ssize_t init_verbs_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct snd_hwdep *hwdep = dev_get_drvdata(dev);
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struct hda_codec *codec = hwdep->private_data;
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int i, len = 0;
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for (i = 0; i < codec->init_verbs.used; i++) {
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struct hda_verb *v = snd_array_elem(&codec->init_verbs, i);
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len += snprintf(buf + len, PAGE_SIZE - len,
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"0x%02x 0x%03x 0x%04x\n",
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v->nid, v->verb, v->param);
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}
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return len;
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}
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static int parse_init_verbs(struct hda_codec *codec, const char *buf)
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{
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struct hda_verb *v;
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int nid, verb, param;
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if (sscanf(buf, "%i %i %i", &nid, &verb, ¶m) != 3)
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return -EINVAL;
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if (!nid || !verb)
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return -EINVAL;
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v = snd_array_new(&codec->init_verbs);
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if (!v)
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return -ENOMEM;
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v->nid = nid;
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v->verb = verb;
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v->param = param;
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return 0;
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}
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static ssize_t init_verbs_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct snd_hwdep *hwdep = dev_get_drvdata(dev);
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struct hda_codec *codec = hwdep->private_data;
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int err = parse_init_verbs(codec, buf);
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if (err < 0)
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return err;
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return count;
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}
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static ssize_t hints_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct snd_hwdep *hwdep = dev_get_drvdata(dev);
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struct hda_codec *codec = hwdep->private_data;
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int i, len = 0;
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for (i = 0; i < codec->hints.used; i++) {
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struct hda_hint *hint = snd_array_elem(&codec->hints, i);
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len += snprintf(buf + len, PAGE_SIZE - len,
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"%s = %s\n", hint->key, hint->val);
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}
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return len;
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}
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static struct hda_hint *get_hint(struct hda_codec *codec, const char *key)
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{
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int i;
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for (i = 0; i < codec->hints.used; i++) {
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struct hda_hint *hint = snd_array_elem(&codec->hints, i);
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if (!strcmp(hint->key, key))
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return hint;
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}
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return NULL;
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}
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static void remove_trail_spaces(char *str)
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{
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char *p;
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if (!*str)
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return;
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p = str + strlen(str) - 1;
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for (; isspace(*p); p--) {
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*p = 0;
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if (p == str)
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return;
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}
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}
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#define MAX_HINTS 1024
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static int parse_hints(struct hda_codec *codec, const char *buf)
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{
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char *key, *val;
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struct hda_hint *hint;
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while (isspace(*buf))
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buf++;
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if (!*buf || *buf == '#' || *buf == '\n')
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return 0;
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if (*buf == '=')
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return -EINVAL;
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key = kstrndup_noeol(buf, 1024);
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if (!key)
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return -ENOMEM;
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/* extract key and val */
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val = strchr(key, '=');
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if (!val) {
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kfree(key);
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return -EINVAL;
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}
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*val++ = 0;
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while (isspace(*val))
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val++;
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remove_trail_spaces(key);
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remove_trail_spaces(val);
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hint = get_hint(codec, key);
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if (hint) {
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/* replace */
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kfree(hint->key);
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hint->key = key;
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hint->val = val;
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return 0;
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}
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/* allocate a new hint entry */
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if (codec->hints.used >= MAX_HINTS)
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hint = NULL;
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else
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hint = snd_array_new(&codec->hints);
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if (!hint) {
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kfree(key);
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return -ENOMEM;
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}
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hint->key = key;
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hint->val = val;
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return 0;
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}
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static ssize_t hints_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct snd_hwdep *hwdep = dev_get_drvdata(dev);
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struct hda_codec *codec = hwdep->private_data;
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int err = parse_hints(codec, buf);
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if (err < 0)
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return err;
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return count;
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}
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static ssize_t pin_configs_show(struct hda_codec *codec,
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struct snd_array *list,
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char *buf)
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{
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int i, len = 0;
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for (i = 0; i < list->used; i++) {
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struct hda_pincfg *pin = snd_array_elem(list, i);
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len += sprintf(buf + len, "0x%02x 0x%08x\n",
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pin->nid, pin->cfg);
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}
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return len;
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}
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static ssize_t init_pin_configs_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct snd_hwdep *hwdep = dev_get_drvdata(dev);
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struct hda_codec *codec = hwdep->private_data;
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return pin_configs_show(codec, &codec->init_pins, buf);
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}
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static ssize_t user_pin_configs_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct snd_hwdep *hwdep = dev_get_drvdata(dev);
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struct hda_codec *codec = hwdep->private_data;
|
|
return pin_configs_show(codec, &codec->user_pins, buf);
|
|
}
|
|
|
|
static ssize_t driver_pin_configs_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct snd_hwdep *hwdep = dev_get_drvdata(dev);
|
|
struct hda_codec *codec = hwdep->private_data;
|
|
return pin_configs_show(codec, &codec->driver_pins, buf);
|
|
}
|
|
|
|
#define MAX_PIN_CONFIGS 32
|
|
|
|
static int parse_user_pin_configs(struct hda_codec *codec, const char *buf)
|
|
{
|
|
int nid, cfg;
|
|
|
|
if (sscanf(buf, "%i %i", &nid, &cfg) != 2)
|
|
return -EINVAL;
|
|
if (!nid)
|
|
return -EINVAL;
|
|
return snd_hda_add_pincfg(codec, &codec->user_pins, nid, cfg);
|
|
}
|
|
|
|
static ssize_t user_pin_configs_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct snd_hwdep *hwdep = dev_get_drvdata(dev);
|
|
struct hda_codec *codec = hwdep->private_data;
|
|
int err = parse_user_pin_configs(codec, buf);
|
|
if (err < 0)
|
|
return err;
|
|
return count;
|
|
}
|
|
|
|
#define CODEC_ATTR_RW(type) \
|
|
__ATTR(type, 0644, type##_show, type##_store)
|
|
#define CODEC_ATTR_RO(type) \
|
|
__ATTR_RO(type)
|
|
#define CODEC_ATTR_WO(type) \
|
|
__ATTR(type, 0200, NULL, type##_store)
|
|
|
|
static struct device_attribute codec_attrs[] = {
|
|
CODEC_ATTR_RW(vendor_id),
|
|
CODEC_ATTR_RW(subsystem_id),
|
|
CODEC_ATTR_RW(revision_id),
|
|
CODEC_ATTR_RO(afg),
|
|
CODEC_ATTR_RO(mfg),
|
|
CODEC_ATTR_RW(vendor_name),
|
|
CODEC_ATTR_RW(chip_name),
|
|
CODEC_ATTR_RW(modelname),
|
|
CODEC_ATTR_RW(init_verbs),
|
|
CODEC_ATTR_RW(hints),
|
|
CODEC_ATTR_RO(init_pin_configs),
|
|
CODEC_ATTR_RW(user_pin_configs),
|
|
CODEC_ATTR_RO(driver_pin_configs),
|
|
CODEC_ATTR_WO(reconfig),
|
|
CODEC_ATTR_WO(clear),
|
|
};
|
|
|
|
/*
|
|
* create sysfs files on hwdep directory
|
|
*/
|
|
int snd_hda_hwdep_add_sysfs(struct hda_codec *codec)
|
|
{
|
|
struct snd_hwdep *hwdep = codec->hwdep;
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(codec_attrs); i++)
|
|
snd_add_device_sysfs_file(SNDRV_DEVICE_TYPE_HWDEP, hwdep->card,
|
|
hwdep->device, &codec_attrs[i]);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Look for hint string
|
|
*/
|
|
const char *snd_hda_get_hint(struct hda_codec *codec, const char *key)
|
|
{
|
|
struct hda_hint *hint = get_hint(codec, key);
|
|
return hint ? hint->val : NULL;
|
|
}
|
|
EXPORT_SYMBOL_HDA(snd_hda_get_hint);
|
|
|
|
int snd_hda_get_bool_hint(struct hda_codec *codec, const char *key)
|
|
{
|
|
const char *p = snd_hda_get_hint(codec, key);
|
|
if (!p || !*p)
|
|
return -ENOENT;
|
|
switch (toupper(*p)) {
|
|
case 'T': /* true */
|
|
case 'Y': /* yes */
|
|
case '1':
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_HDA(snd_hda_get_bool_hint);
|
|
|
|
#endif /* CONFIG_SND_HDA_RECONFIG */
|
|
|
|
#ifdef CONFIG_SND_HDA_PATCH_LOADER
|
|
|
|
/* parser mode */
|
|
enum {
|
|
LINE_MODE_NONE,
|
|
LINE_MODE_CODEC,
|
|
LINE_MODE_MODEL,
|
|
LINE_MODE_PINCFG,
|
|
LINE_MODE_VERB,
|
|
LINE_MODE_HINT,
|
|
NUM_LINE_MODES,
|
|
};
|
|
|
|
static inline int strmatch(const char *a, const char *b)
|
|
{
|
|
return strnicmp(a, b, strlen(b)) == 0;
|
|
}
|
|
|
|
/* parse the contents after the line "[codec]"
|
|
* accept only the line with three numbers, and assign the current codec
|
|
*/
|
|
static void parse_codec_mode(char *buf, struct hda_bus *bus,
|
|
struct hda_codec **codecp)
|
|
{
|
|
unsigned int vendorid, subid, caddr;
|
|
struct hda_codec *codec;
|
|
|
|
*codecp = NULL;
|
|
if (sscanf(buf, "%i %i %i", &vendorid, &subid, &caddr) == 3) {
|
|
list_for_each_entry(codec, &bus->codec_list, list) {
|
|
if (codec->addr == caddr) {
|
|
*codecp = codec;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* parse the contents after the other command tags, [pincfg], [verb],
|
|
* [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);
|
|
}
|
|
|
|
struct hda_patch_item {
|
|
const char *tag;
|
|
void (*parser)(char *buf, struct hda_bus *bus, struct hda_codec **retc);
|
|
};
|
|
|
|
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 },
|
|
};
|
|
|
|
/* check the line starting with '[' -- change the parser mode accodingly */
|
|
static int parse_line_mode(char *buf, struct hda_bus *bus)
|
|
{
|
|
int i;
|
|
for (i = 0; i < ARRAY_SIZE(patch_items); i++) {
|
|
if (!patch_items[i].tag)
|
|
continue;
|
|
if (strmatch(buf, patch_items[i].tag))
|
|
return i;
|
|
}
|
|
return LINE_MODE_NONE;
|
|
}
|
|
|
|
/* copy one line from the buffer in fw, and update the fields in fw
|
|
* return zero if it reaches to the end of the buffer, or non-zero
|
|
* if successfully copied a line
|
|
*
|
|
* the spaces at the beginning and the end of the line are stripped
|
|
*/
|
|
static int get_line_from_fw(char *buf, int size, struct firmware *fw)
|
|
{
|
|
int len;
|
|
const char *p = fw->data;
|
|
while (isspace(*p) && fw->size) {
|
|
p++;
|
|
fw->size--;
|
|
}
|
|
if (!fw->size)
|
|
return 0;
|
|
if (size < fw->size)
|
|
size = fw->size;
|
|
|
|
for (len = 0; len < fw->size; len++) {
|
|
if (!*p)
|
|
break;
|
|
if (*p == '\n') {
|
|
p++;
|
|
len++;
|
|
break;
|
|
}
|
|
if (len < size)
|
|
*buf++ = *p++;
|
|
}
|
|
*buf = 0;
|
|
fw->size -= len;
|
|
fw->data = p;
|
|
remove_trail_spaces(buf);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* load a "patch" firmware file and parse it
|
|
*/
|
|
int snd_hda_load_patch(struct hda_bus *bus, const char *patch)
|
|
{
|
|
int err;
|
|
const struct firmware *fw;
|
|
struct firmware tmp;
|
|
char buf[128];
|
|
struct hda_codec *codec;
|
|
int line_mode;
|
|
struct device *dev = bus->card->dev;
|
|
|
|
if (snd_BUG_ON(!dev))
|
|
return -ENODEV;
|
|
err = request_firmware(&fw, patch, dev);
|
|
if (err < 0) {
|
|
printk(KERN_ERR "hda-codec: Cannot load the patch '%s'\n",
|
|
patch);
|
|
return err;
|
|
}
|
|
|
|
tmp = *fw;
|
|
line_mode = LINE_MODE_NONE;
|
|
codec = NULL;
|
|
while (get_line_from_fw(buf, sizeof(buf) - 1, &tmp)) {
|
|
if (!*buf || *buf == '#' || *buf == '\n')
|
|
continue;
|
|
if (*buf == '[')
|
|
line_mode = parse_line_mode(buf, bus);
|
|
else if (patch_items[line_mode].parser)
|
|
patch_items[line_mode].parser(buf, bus, &codec);
|
|
}
|
|
release_firmware(fw);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_HDA(snd_hda_load_patch);
|
|
#endif /* CONFIG_SND_HDA_PATCH_LOADER */
|