Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * ALSA driver for ICEnsemble ICE1712 (Envy24) |
| 3 | * |
| 4 | * AK4524 / AK4528 / AK4529 / AK4355 / AK4381 interface |
| 5 | * |
Jaroslav Kysela | c1017a4 | 2007-10-15 09:50:19 +0200 | [diff] [blame] | 6 | * Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | * |
| 22 | */ |
| 23 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <asm/io.h> |
| 25 | #include <linux/delay.h> |
| 26 | #include <linux/interrupt.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame^] | 27 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/init.h> |
| 29 | #include <sound/core.h> |
| 30 | #include <sound/initval.h> |
| 31 | #include "ice1712.h" |
| 32 | |
Jaroslav Kysela | c1017a4 | 2007-10-15 09:50:19 +0200 | [diff] [blame] | 33 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | MODULE_DESCRIPTION("ICEnsemble ICE17xx <-> AK4xxx AD/DA chip interface"); |
| 35 | MODULE_LICENSE("GPL"); |
| 36 | |
Takashi Iwai | 6ca308d | 2005-11-17 14:59:52 +0100 | [diff] [blame] | 37 | static void snd_ice1712_akm4xxx_lock(struct snd_akm4xxx *ak, int chip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | { |
Takashi Iwai | 6ca308d | 2005-11-17 14:59:52 +0100 | [diff] [blame] | 39 | struct snd_ice1712 *ice = ak->private_data[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | |
| 41 | snd_ice1712_save_gpio_status(ice); |
| 42 | } |
| 43 | |
Takashi Iwai | 6ca308d | 2005-11-17 14:59:52 +0100 | [diff] [blame] | 44 | static void snd_ice1712_akm4xxx_unlock(struct snd_akm4xxx *ak, int chip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | { |
Takashi Iwai | 6ca308d | 2005-11-17 14:59:52 +0100 | [diff] [blame] | 46 | struct snd_ice1712 *ice = ak->private_data[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
| 48 | snd_ice1712_restore_gpio_status(ice); |
| 49 | } |
| 50 | |
| 51 | /* |
| 52 | * write AK4xxx register |
| 53 | */ |
Takashi Iwai | 6ca308d | 2005-11-17 14:59:52 +0100 | [diff] [blame] | 54 | static void snd_ice1712_akm4xxx_write(struct snd_akm4xxx *ak, int chip, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | unsigned char addr, unsigned char data) |
| 56 | { |
| 57 | unsigned int tmp; |
| 58 | int idx; |
| 59 | unsigned int addrdata; |
| 60 | struct snd_ak4xxx_private *priv = (void *)ak->private_value[0]; |
Takashi Iwai | 6ca308d | 2005-11-17 14:59:52 +0100 | [diff] [blame] | 61 | struct snd_ice1712 *ice = ak->private_data[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
Takashi Iwai | da3cec3 | 2008-08-08 17:12:14 +0200 | [diff] [blame] | 63 | if (snd_BUG_ON(chip < 0 || chip >= 4)) |
| 64 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | |
| 66 | tmp = snd_ice1712_gpio_read(ice); |
| 67 | tmp |= priv->add_flags; |
| 68 | tmp &= ~priv->mask_flags; |
| 69 | if (priv->cs_mask == priv->cs_addr) { |
| 70 | if (priv->cif) { |
| 71 | tmp |= priv->cs_mask; /* start without chip select */ |
| 72 | } else { |
| 73 | tmp &= ~priv->cs_mask; /* chip select low */ |
| 74 | snd_ice1712_gpio_write(ice, tmp); |
| 75 | udelay(1); |
| 76 | } |
| 77 | } else { |
| 78 | /* doesn't handle cf=1 yet */ |
| 79 | tmp &= ~priv->cs_mask; |
| 80 | tmp |= priv->cs_addr; |
| 81 | snd_ice1712_gpio_write(ice, tmp); |
| 82 | udelay(1); |
| 83 | } |
| 84 | |
| 85 | /* build I2C address + data byte */ |
| 86 | addrdata = (priv->caddr << 6) | 0x20 | (addr & 0x1f); |
| 87 | addrdata = (addrdata << 8) | data; |
| 88 | for (idx = 15; idx >= 0; idx--) { |
| 89 | /* drop clock */ |
| 90 | tmp &= ~priv->clk_mask; |
| 91 | snd_ice1712_gpio_write(ice, tmp); |
| 92 | udelay(1); |
| 93 | /* set data */ |
| 94 | if (addrdata & (1 << idx)) |
| 95 | tmp |= priv->data_mask; |
| 96 | else |
| 97 | tmp &= ~priv->data_mask; |
| 98 | snd_ice1712_gpio_write(ice, tmp); |
| 99 | udelay(1); |
| 100 | /* raise clock */ |
| 101 | tmp |= priv->clk_mask; |
| 102 | snd_ice1712_gpio_write(ice, tmp); |
| 103 | udelay(1); |
| 104 | } |
| 105 | |
| 106 | if (priv->cs_mask == priv->cs_addr) { |
| 107 | if (priv->cif) { |
| 108 | /* assert a cs pulse to trigger */ |
| 109 | tmp &= ~priv->cs_mask; |
| 110 | snd_ice1712_gpio_write(ice, tmp); |
| 111 | udelay(1); |
| 112 | } |
| 113 | tmp |= priv->cs_mask; /* chip select high to trigger */ |
| 114 | } else { |
| 115 | tmp &= ~priv->cs_mask; |
| 116 | tmp |= priv->cs_none; /* deselect address */ |
| 117 | } |
| 118 | snd_ice1712_gpio_write(ice, tmp); |
| 119 | udelay(1); |
| 120 | } |
| 121 | |
| 122 | /* |
Takashi Iwai | 6ca308d | 2005-11-17 14:59:52 +0100 | [diff] [blame] | 123 | * initialize the struct snd_akm4xxx record with the template |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | */ |
Takashi Iwai | 6ca308d | 2005-11-17 14:59:52 +0100 | [diff] [blame] | 125 | int snd_ice1712_akm4xxx_init(struct snd_akm4xxx *ak, const struct snd_akm4xxx *temp, |
| 126 | const struct snd_ak4xxx_private *_priv, struct snd_ice1712 *ice) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | { |
| 128 | struct snd_ak4xxx_private *priv; |
| 129 | |
| 130 | if (_priv != NULL) { |
| 131 | priv = kmalloc(sizeof(*priv), GFP_KERNEL); |
| 132 | if (priv == NULL) |
| 133 | return -ENOMEM; |
| 134 | *priv = *_priv; |
| 135 | } else { |
| 136 | priv = NULL; |
| 137 | } |
| 138 | *ak = *temp; |
| 139 | ak->card = ice->card; |
| 140 | ak->private_value[0] = (unsigned long)priv; |
| 141 | ak->private_data[0] = ice; |
| 142 | if (ak->ops.lock == NULL) |
| 143 | ak->ops.lock = snd_ice1712_akm4xxx_lock; |
| 144 | if (ak->ops.unlock == NULL) |
| 145 | ak->ops.unlock = snd_ice1712_akm4xxx_unlock; |
| 146 | if (ak->ops.write == NULL) |
| 147 | ak->ops.write = snd_ice1712_akm4xxx_write; |
| 148 | snd_akm4xxx_init(ak); |
| 149 | return 0; |
| 150 | } |
| 151 | |
Takashi Iwai | 6ca308d | 2005-11-17 14:59:52 +0100 | [diff] [blame] | 152 | void snd_ice1712_akm4xxx_free(struct snd_ice1712 *ice) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | { |
| 154 | unsigned int akidx; |
| 155 | if (ice->akm == NULL) |
| 156 | return; |
| 157 | for (akidx = 0; akidx < ice->akm_codecs; akidx++) { |
Takashi Iwai | 6ca308d | 2005-11-17 14:59:52 +0100 | [diff] [blame] | 158 | struct snd_akm4xxx *ak = &ice->akm[akidx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | kfree((void*)ak->private_value[0]); |
| 160 | } |
| 161 | kfree(ice->akm); |
| 162 | } |
| 163 | |
| 164 | /* |
| 165 | * build AK4xxx controls |
| 166 | */ |
Takashi Iwai | 6ca308d | 2005-11-17 14:59:52 +0100 | [diff] [blame] | 167 | int snd_ice1712_akm4xxx_build_controls(struct snd_ice1712 *ice) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | { |
| 169 | unsigned int akidx; |
| 170 | int err; |
| 171 | |
| 172 | for (akidx = 0; akidx < ice->akm_codecs; akidx++) { |
Takashi Iwai | 6ca308d | 2005-11-17 14:59:52 +0100 | [diff] [blame] | 173 | struct snd_akm4xxx *ak = &ice->akm[akidx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | err = snd_akm4xxx_build_controls(ak); |
| 175 | if (err < 0) |
| 176 | return err; |
| 177 | } |
| 178 | return 0; |
| 179 | } |
| 180 | |
| 181 | static int __init alsa_ice1712_akm4xxx_module_init(void) |
| 182 | { |
| 183 | return 0; |
| 184 | } |
| 185 | |
| 186 | static void __exit alsa_ice1712_akm4xxx_module_exit(void) |
| 187 | { |
| 188 | } |
| 189 | |
| 190 | module_init(alsa_ice1712_akm4xxx_module_init) |
| 191 | module_exit(alsa_ice1712_akm4xxx_module_exit) |
| 192 | |
| 193 | EXPORT_SYMBOL(snd_ice1712_akm4xxx_init); |
| 194 | EXPORT_SYMBOL(snd_ice1712_akm4xxx_free); |
| 195 | EXPORT_SYMBOL(snd_ice1712_akm4xxx_build_controls); |