diff options
Diffstat (limited to 'sound/pci/ak4531_codec.c')
| -rw-r--r-- | sound/pci/ak4531_codec.c | 490 |
1 files changed, 490 insertions, 0 deletions
diff --git a/sound/pci/ak4531_codec.c b/sound/pci/ak4531_codec.c new file mode 100644 index 00000000000..33d37b1c42f --- /dev/null +++ b/sound/pci/ak4531_codec.c @@ -0,0 +1,490 @@ +/* + * Copyright (c) by Jaroslav Kysela <perex@perex.cz> + * Universal routines for AK4531 codec + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/mutex.h> + +#include <sound/core.h> +#include <sound/ak4531_codec.h> +#include <sound/tlv.h> + +/* +MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); +MODULE_DESCRIPTION("Universal routines for AK4531 codec"); +MODULE_LICENSE("GPL"); +*/ + +#ifdef CONFIG_PROC_FS +static void snd_ak4531_proc_init(struct snd_card *card, struct snd_ak4531 *ak4531); +#else +#define snd_ak4531_proc_init(card,ak) +#endif + +/* + * + */ + +#if 0 + +static void snd_ak4531_dump(struct snd_ak4531 *ak4531) +{ + int idx; + + for (idx = 0; idx < 0x19; idx++) + printk("ak4531 0x%x: 0x%x\n", idx, ak4531->regs[idx]); +} + +#endif + +/* + * + */ + +#define AK4531_SINGLE(xname, xindex, reg, shift, mask, invert) \ +{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ + .info = snd_ak4531_info_single, \ + .get = snd_ak4531_get_single, .put = snd_ak4531_put_single, \ + .private_value = reg | (shift << 16) | (mask << 24) | (invert << 22) } +#define AK4531_SINGLE_TLV(xname, xindex, reg, shift, mask, invert, xtlv) \ +{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ + .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \ + .name = xname, .index = xindex, \ + .info = snd_ak4531_info_single, \ + .get = snd_ak4531_get_single, .put = snd_ak4531_put_single, \ + .private_value = reg | (shift << 16) | (mask << 24) | (invert << 22), \ + .tlv = { .p = (xtlv) } } + +static int snd_ak4531_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) +{ + int mask = (kcontrol->private_value >> 24) & 0xff; + + uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = mask; + return 0; +} + +static int snd_ak4531_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) +{ + struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol); + int reg = kcontrol->private_value & 0xff; + int shift = (kcontrol->private_value >> 16) & 0x07; + int mask = (kcontrol->private_value >> 24) & 0xff; + int invert = (kcontrol->private_value >> 22) & 1; + int val; + + mutex_lock(&ak4531->reg_mutex); + val = (ak4531->regs[reg] >> shift) & mask; + mutex_unlock(&ak4531->reg_mutex); + if (invert) { + val = mask - val; + } + ucontrol->value.integer.value[0] = val; + return 0; +} + +static int snd_ak4531_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) +{ + struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol); + int reg = kcontrol->private_value & 0xff; + int shift = (kcontrol->private_value >> 16) & 0x07; + int mask = (kcontrol->private_value >> 24) & 0xff; + int invert = (kcontrol->private_value >> 22) & 1; + int change; + int val; + + val = ucontrol->value.integer.value[0] & mask; + if (invert) { + val = mask - val; + } + val <<= shift; + mutex_lock(&ak4531->reg_mutex); + val = (ak4531->regs[reg] & ~(mask << shift)) | val; + change = val != ak4531->regs[reg]; + ak4531->write(ak4531, reg, ak4531->regs[reg] = val); + mutex_unlock(&ak4531->reg_mutex); + return change; +} + +#define AK4531_DOUBLE(xname, xindex, left_reg, right_reg, left_shift, right_shift, mask, invert) \ +{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ + .info = snd_ak4531_info_double, \ + .get = snd_ak4531_get_double, .put = snd_ak4531_put_double, \ + .private_value = left_reg | (right_reg << 8) | (left_shift << 16) | (right_shift << 19) | (mask << 24) | (invert << 22) } +#define AK4531_DOUBLE_TLV(xname, xindex, left_reg, right_reg, left_shift, right_shift, mask, invert, xtlv) \ +{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ + .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \ + .name = xname, .index = xindex, \ + .info = snd_ak4531_info_double, \ + .get = snd_ak4531_get_double, .put = snd_ak4531_put_double, \ + .private_value = left_reg | (right_reg << 8) | (left_shift << 16) | (right_shift << 19) | (mask << 24) | (invert << 22), \ + .tlv = { .p = (xtlv) } } + +static int snd_ak4531_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) +{ + int mask = (kcontrol->private_value >> 24) & 0xff; + + uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 2; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = mask; + return 0; +} + +static int snd_ak4531_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) +{ + struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol); + int left_reg = kcontrol->private_value & 0xff; + int right_reg = (kcontrol->private_value >> 8) & 0xff; + int left_shift = (kcontrol->private_value >> 16) & 0x07; + int right_shift = (kcontrol->private_value >> 19) & 0x07; + int mask = (kcontrol->private_value >> 24) & 0xff; + int invert = (kcontrol->private_value >> 22) & 1; + int left, right; + + mutex_lock(&ak4531->reg_mutex); + left = (ak4531->regs[left_reg] >> left_shift) & mask; + right = (ak4531->regs[right_reg] >> right_shift) & mask; + mutex_unlock(&ak4531->reg_mutex); + if (invert) { + left = mask - left; + right = mask - right; + } + ucontrol->value.integer.value[0] = left; + ucontrol->value.integer.value[1] = right; + return 0; +} + +static int snd_ak4531_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) +{ + struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol); + int left_reg = kcontrol->private_value & 0xff; + int right_reg = (kcontrol->private_value >> 8) & 0xff; + int left_shift = (kcontrol->private_value >> 16) & 0x07; + int right_shift = (kcontrol->private_value >> 19) & 0x07; + int mask = (kcontrol->private_value >> 24) & 0xff; + int invert = (kcontrol->private_value >> 22) & 1; + int change; + int left, right; + + left = ucontrol->value.integer.value[0] & mask; + right = ucontrol->value.integer.value[1] & mask; + if (invert) { + left = mask - left; + right = mask - right; + } + left <<= left_shift; + right <<= right_shift; + mutex_lock(&ak4531->reg_mutex); + if (left_reg == right_reg) { + left = (ak4531->regs[left_reg] & ~((mask << left_shift) | (mask << right_shift))) | left | right; + change = left != ak4531->regs[left_reg]; + ak4531->write(ak4531, left_reg, ak4531->regs[left_reg] = left); + } else { + left = (ak4531->regs[left_reg] & ~(mask << left_shift)) | left; + right = (ak4531->regs[right_reg] & ~(mask << right_shift)) | right; + change = left != ak4531->regs[left_reg] || right != ak4531->regs[right_reg]; + ak4531->write(ak4531, left_reg, ak4531->regs[left_reg] = left); + ak4531->write(ak4531, right_reg, ak4531->regs[right_reg] = right); + } + mutex_unlock(&ak4531->reg_mutex); + return change; +} + +#define AK4531_INPUT_SW(xname, xindex, reg1, reg2, left_shift, right_shift) \ +{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \ + .info = snd_ak4531_info_input_sw, \ + .get = snd_ak4531_get_input_sw, .put = snd_ak4531_put_input_sw, \ + .private_value = reg1 | (reg2 << 8) | (left_shift << 16) | (right_shift << 24) } + +static int snd_ak4531_info_input_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + uinfo->count = 4; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 1; + return 0; +} + +static int snd_ak4531_get_input_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) +{ + struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol); + int reg1 = kcontrol->private_value & 0xff; + int reg2 = (kcontrol->private_value >> 8) & 0xff; + int left_shift = (kcontrol->private_value >> 16) & 0x0f; + int right_shift = (kcontrol->private_value >> 24) & 0x0f; + + mutex_lock(&ak4531->reg_mutex); + ucontrol->value.integer.value[0] = (ak4531->regs[reg1] >> left_shift) & 1; + ucontrol->value.integer.value[1] = (ak4531->regs[reg2] >> left_shift) & 1; + ucontrol->value.integer.value[2] = (ak4531->regs[reg1] >> right_shift) & 1; + ucontrol->value.integer.value[3] = (ak4531->regs[reg2] >> right_shift) & 1; + mutex_unlock(&ak4531->reg_mutex); + return 0; +} + +static int snd_ak4531_put_input_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) +{ + struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol); + int reg1 = kcontrol->private_value & 0xff; + int reg2 = (kcontrol->private_value >> 8) & 0xff; + int left_shift = (kcontrol->private_value >> 16) & 0x0f; + int right_shift = (kcontrol->private_value >> 24) & 0x0f; + int change; + int val1, val2; + + mutex_lock(&ak4531->reg_mutex); + val1 = ak4531->regs[reg1] & ~((1 << left_shift) | (1 << right_shift)); + val2 = ak4531->regs[reg2] & ~((1 << left_shift) | (1 << right_shift)); + val1 |= (ucontrol->value.integer.value[0] & 1) << left_shift; + val2 |= (ucontrol->value.integer.value[1] & 1) << left_shift; + val1 |= (ucontrol->value.integer.value[2] & 1) << right_shift; + val2 |= (ucontrol->value.integer.value[3] & 1) << right_shift; + change = val1 != ak4531->regs[reg1] || val2 != ak4531->regs[reg2]; + ak4531->write(ak4531, reg1, ak4531->regs[reg1] = val1); + ak4531->write(ak4531, reg2, ak4531->regs[reg2] = val2); + mutex_unlock(&ak4531->reg_mutex); + return change; +} + +static const DECLARE_TLV_DB_SCALE(db_scale_master, -6200, 200, 0); +static const DECLARE_TLV_DB_SCALE(db_scale_mono, -2800, 400, 0); +static const DECLARE_TLV_DB_SCALE(db_scale_input, -5000, 200, 0); + +static struct snd_kcontrol_new snd_ak4531_controls[] __devinitdata = { + +AK4531_DOUBLE_TLV("Master Playback Switch", 0, + AK4531_LMASTER, AK4531_RMASTER, 7, 7, 1, 1, + db_scale_master), +AK4531_DOUBLE("Master Playback Volume", 0, AK4531_LMASTER, AK4531_RMASTER, 0, 0, 0x1f, 1), + +AK4531_SINGLE_TLV("Master Mono Playback Switch", 0, AK4531_MONO_OUT, 7, 1, 1, + db_scale_mono), +AK4531_SINGLE("Master Mono Playback Volume", 0, AK4531_MONO_OUT, 0, 0x07, 1), + +AK4531_DOUBLE("PCM Switch", 0, AK4531_LVOICE, AK4531_RVOICE, 7, 7, 1, 1), +AK4531_DOUBLE_TLV("PCM Volume", 0, AK4531_LVOICE, AK4531_RVOICE, 0, 0, 0x1f, 1, + db_scale_input), +AK4531_DOUBLE("PCM Playback Switch", 0, AK4531_OUT_SW2, AK4531_OUT_SW2, 3, 2, 1, 0), +AK4531_DOUBLE("PCM Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 2, 2, 1, 0), + +AK4531_DOUBLE("PCM Switch", 1, AK4531_LFM, AK4531_RFM, 7, 7, 1, 1), +AK4531_DOUBLE_TLV("PCM Volume", 1, AK4531_LFM, AK4531_RFM, 0, 0, 0x1f, 1, + db_scale_input), +AK4531_DOUBLE("PCM Playback Switch", 1, AK4531_OUT_SW1, AK4531_OUT_SW1, 6, 5, 1, 0), +AK4531_INPUT_SW("PCM Capture Route", 1, AK4531_LIN_SW1, AK4531_RIN_SW1, 6, 5), + +AK4531_DOUBLE("CD Switch", 0, AK4531_LCD, AK4531_RCD, 7, 7, 1, 1), +AK4531_DOUBLE_TLV("CD Volume", 0, AK4531_LCD, AK4531_RCD, 0, 0, 0x1f, 1, + db_scale_input), +AK4531_DOUBLE("CD Playback Switch", 0, AK4531_OUT_SW1, AK4531_OUT_SW1, 2, 1, 1, 0), +AK4531_INPUT_SW("CD Capture Route", 0, AK4531_LIN_SW1, AK4531_RIN_SW1, 2, 1), + +AK4531_DOUBLE("Line Switch", 0, AK4531_LLINE, AK4531_RLINE, 7, 7, 1, 1), +AK4531_DOUBLE_TLV("Line Volume", 0, AK4531_LLINE, AK4531_RLINE, 0, 0, 0x1f, 1, + db_scale_input), +AK4531_DOUBLE("Line Playback Switch", 0, AK4531_OUT_SW1, AK4531_OUT_SW1, 4, 3, 1, 0), +AK4531_INPUT_SW("Line Capture Route", 0, AK4531_LIN_SW1, AK4531_RIN_SW1, 4, 3), + +AK4531_DOUBLE("Aux Switch", 0, AK4531_LAUXA, AK4531_RAUXA, 7, 7, 1, 1), +AK4531_DOUBLE_TLV("Aux Volume", 0, AK4531_LAUXA, AK4531_RAUXA, 0, 0, 0x1f, 1, + db_scale_input), +AK4531_DOUBLE("Aux Playback Switch", 0, AK4531_OUT_SW2, AK4531_OUT_SW2, 5, 4, 1, 0), +AK4531_INPUT_SW("Aux Capture Route", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 4, 3), + +AK4531_SINGLE("Mono Switch", 0, AK4531_MONO1, 7, 1, 1), +AK4531_SINGLE_TLV("Mono Volume", 0, AK4531_MONO1, 0, 0x1f, 1, db_scale_input), +AK4531_SINGLE("Mono Playback Switch", 0, AK4531_OUT_SW2, 0, 1, 0), +AK4531_DOUBLE("Mono Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 0, 0, 1, 0), + +AK4531_SINGLE("Mono Switch", 1, AK4531_MONO2, 7, 1, 1), +AK4531_SINGLE_TLV("Mono Volume", 1, AK4531_MONO2, 0, 0x1f, 1, db_scale_input), +AK4531_SINGLE("Mono Playback Switch", 1, AK4531_OUT_SW2, 1, 1, 0), +AK4531_DOUBLE("Mono Capture Switch", 1, AK4531_LIN_SW2, AK4531_RIN_SW2, 1, 1, 1, 0), + +AK4531_SINGLE_TLV("Mic Volume", 0, AK4531_MIC, 0, 0x1f, 1, db_scale_input), +AK4531_SINGLE("Mic Switch", 0, AK4531_MIC, 7, 1, 1), +AK4531_SINGLE("Mic Playback Switch", 0, AK4531_OUT_SW1, 0, 1, 0), +AK4531_DOUBLE("Mic Capture Switch", 0, AK4531_LIN_SW1, AK4531_RIN_SW1, 0, 0, 1, 0), + +AK4531_DOUBLE("Mic Bypass Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 7, 7, 1, 0), +AK4531_DOUBLE("Mono1 Bypass Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 6, 6, 1, 0), +AK4531_DOUBLE("Mono2 Bypass Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 5, 5, 1, 0), + +AK4531_SINGLE("AD Input Select", 0, AK4531_AD_IN, 0, 1, 0), +AK4531_SINGLE("Mic Boost (+30dB)", 0, AK4531_MIC_GAIN, 0, 1, 0) +}; + +static int snd_ak4531_free(struct snd_ak4531 *ak4531) +{ + if (ak4531) { + if (ak4531->private_free) + ak4531->private_free(ak4531); + kfree(ak4531); + } + return 0; +} + +static int snd_ak4531_dev_free(struct snd_device *device) +{ + struct snd_ak4531 *ak4531 = device->device_data; + return snd_ak4531_free(ak4531); +} + +static u8 snd_ak4531_initial_map[0x19 + 1] = { + 0x9f, /* 00: Master Volume Lch */ + 0x9f, /* 01: Master Volume Rch */ + 0x9f, /* 02: Voice Volume Lch */ + 0x9f, /* 03: Voice Volume Rch */ + 0x9f, /* 04: FM Volume Lch */ + 0x9f, /* 05: FM Volume Rch */ + 0x9f, /* 06: CD Audio Volume Lch */ + 0x9f, /* 07: CD Audio Volume Rch */ + 0x9f, /* 08: Line Volume Lch */ + 0x9f, /* 09: Line Volume Rch */ + 0x9f, /* 0a: Aux Volume Lch */ + 0x9f, /* 0b: Aux Volume Rch */ + 0x9f, /* 0c: Mono1 Volume */ + 0x9f, /* 0d: Mono2 Volume */ + 0x9f, /* 0e: Mic Volume */ + 0x87, /* 0f: Mono-out Volume */ + 0x00, /* 10: Output Mixer SW1 */ + 0x00, /* 11: Output Mixer SW2 */ + 0x00, /* 12: Lch Input Mixer SW1 */ + 0x00, /* 13: Rch Input Mixer SW1 */ + 0x00, /* 14: Lch Input Mixer SW2 */ + 0x00, /* 15: Rch Input Mixer SW2 */ + 0x00, /* 16: Reset & Power Down */ + 0x00, /* 17: Clock Select */ + 0x00, /* 18: AD Input Select */ + 0x01 /* 19: Mic Amp Setup */ +}; + +int __devinit snd_ak4531_mixer(struct snd_card *card, + struct snd_ak4531 *_ak4531, + struct snd_ak4531 **rak4531) +{ + unsigned int idx; + int err; + struct snd_ak4531 *ak4531; + static struct snd_device_ops ops = { + .dev_free = snd_ak4531_dev_free, + }; + + snd_assert(rak4531 != NULL, return -EINVAL); + *rak4531 = NULL; + snd_assert(card != NULL && _ak4531 != NULL, return -EINVAL); + ak4531 = kzalloc(sizeof(*ak4531), GFP_KERNEL); + if (ak4531 == NULL) + return -ENOMEM; + *ak4531 = *_ak4531; + mutex_init(&ak4531->reg_mutex); + if ((err = snd_component_add(card, "AK4531")) < 0) { + snd_ak4531_free(ak4531); + return err; + } + strcpy(card->mixername, "Asahi Kasei AK4531"); + ak4531->write(ak4531, AK4531_RESET, 0x03); /* no RST, PD */ + udelay(100); + ak4531->write(ak4531, AK4531_CLOCK, 0x00); /* CODEC ADC and CODEC DAC use {LR,B}CLK2 and run off LRCLK2 PLL */ + for (idx = 0; idx <= 0x19; idx++) { + if (idx == AK4531_RESET || idx == AK4531_CLOCK) + continue; + ak4531->write(ak4531, idx, ak4531->regs[idx] = snd_ak4531_initial_map[idx]); /* recording source is mixer */ + } + for (idx = 0; idx < ARRAY_SIZE(snd_ak4531_controls); idx++) { + if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_ak4531_controls[idx], ak4531))) < 0) { + snd_ak4531_free(ak4531); + return err; + } + } + snd_ak4531_proc_init(card, ak4531); + if ((err = snd_device_new(card, SNDRV_DEV_CODEC, ak4531, &ops)) < 0) { + snd_ak4531_free(ak4531); + return err; + } + +#if 0 + snd_ak4531_dump(ak4531); +#endif + *rak4531 = ak4531; + return 0; +} + +/* + * power management + */ +#ifdef CONFIG_PM +void snd_ak4531_suspend(struct snd_ak4531 *ak4531) +{ + /* mute */ + ak4531->write(ak4531, AK4531_LMASTER, 0x9f); + ak4531->write(ak4531, AK4531_RMASTER, 0x9f); + /* powerdown */ + ak4531->write(ak4531, AK4531_RESET, 0x01); +} + +void snd_ak4531_resume(struct snd_ak4531 *ak4531) +{ + int idx; + + /* initialize */ + ak4531->write(ak4531, AK4531_RESET, 0x03); + udelay(100); + ak4531->write(ak4531, AK4531_CLOCK, 0x00); + /* restore mixer registers */ + for (idx = 0; idx <= 0x19; idx++) { + if (idx == AK4531_RESET || idx == AK4531_CLOCK) + continue; + ak4531->write(ak4531, idx, ak4531->regs[idx]); + } +} +#endif + +#ifdef CONFIG_PROC_FS +/* + * /proc interface + */ + +static void snd_ak4531_proc_read(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) +{ + struct snd_ak4531 *ak4531 = entry->private_data; + + snd_iprintf(buffer, "Asahi Kasei AK4531\n\n"); + snd_iprintf(buffer, "Recording source : %s\n" + "MIC gain : %s\n", + ak4531->regs[AK4531_AD_IN] & 1 ? "external" : "mixer", + ak4531->regs[AK4531_MIC_GAIN] & 1 ? "+30dB" : "+0dB"); +} + +static void __devinit +snd_ak4531_proc_init(struct snd_card *card, struct snd_ak4531 *ak4531) +{ + struct snd_info_entry *entry; + + if (! snd_card_proc_new(card, "ak4531", &entry)) + snd_info_set_text_ops(entry, ak4531, snd_ak4531_proc_read); +} +#endif |