Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Functions for accessing OPL4 devices |
| 3 | * Copyright (c) 2003 by Clemens Ladisch <clemens@ladisch.de> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | |
| 20 | #include "opl4_local.h" |
| 21 | #include <sound/initval.h> |
| 22 | #include <linux/ioport.h> |
| 23 | #include <linux/init.h> |
| 24 | #include <asm/io.h> |
| 25 | |
| 26 | MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>"); |
| 27 | MODULE_DESCRIPTION("OPL4 driver"); |
| 28 | MODULE_LICENSE("GPL"); |
| 29 | |
| 30 | static void inline snd_opl4_wait(opl4_t *opl4) |
| 31 | { |
| 32 | int timeout = 10; |
| 33 | while ((inb(opl4->fm_port) & OPL4_STATUS_BUSY) && --timeout > 0) |
| 34 | ; |
| 35 | } |
| 36 | |
| 37 | void snd_opl4_write(opl4_t *opl4, u8 reg, u8 value) |
| 38 | { |
| 39 | snd_opl4_wait(opl4); |
| 40 | outb(reg, opl4->pcm_port); |
| 41 | |
| 42 | snd_opl4_wait(opl4); |
| 43 | outb(value, opl4->pcm_port + 1); |
| 44 | } |
| 45 | |
| 46 | u8 snd_opl4_read(opl4_t *opl4, u8 reg) |
| 47 | { |
| 48 | snd_opl4_wait(opl4); |
| 49 | outb(reg, opl4->pcm_port); |
| 50 | |
| 51 | snd_opl4_wait(opl4); |
| 52 | return inb(opl4->pcm_port + 1); |
| 53 | } |
| 54 | |
| 55 | void snd_opl4_read_memory(opl4_t *opl4, char *buf, int offset, int size) |
| 56 | { |
| 57 | unsigned long flags; |
| 58 | u8 memcfg; |
| 59 | |
| 60 | spin_lock_irqsave(&opl4->reg_lock, flags); |
| 61 | |
| 62 | memcfg = snd_opl4_read(opl4, OPL4_REG_MEMORY_CONFIGURATION); |
| 63 | snd_opl4_write(opl4, OPL4_REG_MEMORY_CONFIGURATION, memcfg | OPL4_MODE_BIT); |
| 64 | |
| 65 | snd_opl4_write(opl4, OPL4_REG_MEMORY_ADDRESS_HIGH, offset >> 16); |
| 66 | snd_opl4_write(opl4, OPL4_REG_MEMORY_ADDRESS_MID, offset >> 8); |
| 67 | snd_opl4_write(opl4, OPL4_REG_MEMORY_ADDRESS_LOW, offset); |
| 68 | |
| 69 | snd_opl4_wait(opl4); |
| 70 | outb(OPL4_REG_MEMORY_DATA, opl4->pcm_port); |
| 71 | snd_opl4_wait(opl4); |
| 72 | insb(opl4->pcm_port + 1, buf, size); |
| 73 | |
| 74 | snd_opl4_write(opl4, OPL4_REG_MEMORY_CONFIGURATION, memcfg); |
| 75 | |
| 76 | spin_unlock_irqrestore(&opl4->reg_lock, flags); |
| 77 | } |
| 78 | |
| 79 | void snd_opl4_write_memory(opl4_t *opl4, const char *buf, int offset, int size) |
| 80 | { |
| 81 | unsigned long flags; |
| 82 | u8 memcfg; |
| 83 | |
| 84 | spin_lock_irqsave(&opl4->reg_lock, flags); |
| 85 | |
| 86 | memcfg = snd_opl4_read(opl4, OPL4_REG_MEMORY_CONFIGURATION); |
| 87 | snd_opl4_write(opl4, OPL4_REG_MEMORY_CONFIGURATION, memcfg | OPL4_MODE_BIT); |
| 88 | |
| 89 | snd_opl4_write(opl4, OPL4_REG_MEMORY_ADDRESS_HIGH, offset >> 16); |
| 90 | snd_opl4_write(opl4, OPL4_REG_MEMORY_ADDRESS_MID, offset >> 8); |
| 91 | snd_opl4_write(opl4, OPL4_REG_MEMORY_ADDRESS_LOW, offset); |
| 92 | |
| 93 | snd_opl4_wait(opl4); |
| 94 | outb(OPL4_REG_MEMORY_DATA, opl4->pcm_port); |
| 95 | snd_opl4_wait(opl4); |
| 96 | outsb(opl4->pcm_port + 1, buf, size); |
| 97 | |
| 98 | snd_opl4_write(opl4, OPL4_REG_MEMORY_CONFIGURATION, memcfg); |
| 99 | |
| 100 | spin_unlock_irqrestore(&opl4->reg_lock, flags); |
| 101 | } |
| 102 | |
| 103 | static void snd_opl4_enable_opl4(opl4_t *opl4) |
| 104 | { |
| 105 | outb(OPL3_REG_MODE, opl4->fm_port + 2); |
| 106 | inb(opl4->fm_port); |
| 107 | inb(opl4->fm_port); |
| 108 | outb(OPL3_OPL3_ENABLE | OPL3_OPL4_ENABLE, opl4->fm_port + 3); |
| 109 | inb(opl4->fm_port); |
| 110 | inb(opl4->fm_port); |
| 111 | } |
| 112 | |
| 113 | static int snd_opl4_detect(opl4_t *opl4) |
| 114 | { |
| 115 | u8 id1, id2; |
| 116 | |
| 117 | snd_opl4_enable_opl4(opl4); |
| 118 | |
| 119 | id1 = snd_opl4_read(opl4, OPL4_REG_MEMORY_CONFIGURATION); |
| 120 | snd_printdd("OPL4[02]=%02x\n", id1); |
| 121 | switch (id1 & OPL4_DEVICE_ID_MASK) { |
| 122 | case 0x20: |
| 123 | opl4->hardware = OPL3_HW_OPL4; |
| 124 | break; |
| 125 | case 0x40: |
| 126 | opl4->hardware = OPL3_HW_OPL4_ML; |
| 127 | break; |
| 128 | default: |
| 129 | return -ENODEV; |
| 130 | } |
| 131 | |
| 132 | snd_opl4_write(opl4, OPL4_REG_MIX_CONTROL_FM, 0x00); |
| 133 | snd_opl4_write(opl4, OPL4_REG_MIX_CONTROL_PCM, 0xff); |
| 134 | id1 = snd_opl4_read(opl4, OPL4_REG_MIX_CONTROL_FM); |
| 135 | id2 = snd_opl4_read(opl4, OPL4_REG_MIX_CONTROL_PCM); |
| 136 | snd_printdd("OPL4 id1=%02x id2=%02x\n", id1, id2); |
| 137 | if (id1 != 0x00 || id2 != 0xff) |
| 138 | return -ENODEV; |
| 139 | |
| 140 | snd_opl4_write(opl4, OPL4_REG_MIX_CONTROL_FM, 0x3f); |
| 141 | snd_opl4_write(opl4, OPL4_REG_MIX_CONTROL_PCM, 0x3f); |
| 142 | snd_opl4_write(opl4, OPL4_REG_MEMORY_CONFIGURATION, 0x00); |
| 143 | return 0; |
| 144 | } |
| 145 | |
| 146 | #if defined(CONFIG_SND_SEQUENCER) || (defined(MODULE) && defined(CONFIG_SND_SEQUENCER_MODULE)) |
| 147 | static void snd_opl4_seq_dev_free(snd_seq_device_t *seq_dev) |
| 148 | { |
| 149 | opl4_t *opl4 = seq_dev->private_data; |
| 150 | opl4->seq_dev = NULL; |
| 151 | } |
| 152 | |
| 153 | static int snd_opl4_create_seq_dev(opl4_t *opl4, int seq_device) |
| 154 | { |
| 155 | opl4->seq_dev_num = seq_device; |
| 156 | if (snd_seq_device_new(opl4->card, seq_device, SNDRV_SEQ_DEV_ID_OPL4, |
| 157 | sizeof(opl4_t *), &opl4->seq_dev) >= 0) { |
| 158 | strcpy(opl4->seq_dev->name, "OPL4 Wavetable"); |
| 159 | *(opl4_t **)SNDRV_SEQ_DEVICE_ARGPTR(opl4->seq_dev) = opl4; |
| 160 | opl4->seq_dev->private_data = opl4; |
| 161 | opl4->seq_dev->private_free = snd_opl4_seq_dev_free; |
| 162 | } |
| 163 | return 0; |
| 164 | } |
| 165 | #endif |
| 166 | |
| 167 | static void snd_opl4_free(opl4_t *opl4) |
| 168 | { |
| 169 | #ifdef CONFIG_PROC_FS |
| 170 | snd_opl4_free_proc(opl4); |
| 171 | #endif |
| 172 | if (opl4->res_fm_port) { |
| 173 | release_resource(opl4->res_fm_port); |
| 174 | kfree_nocheck(opl4->res_fm_port); |
| 175 | } |
| 176 | if (opl4->res_pcm_port) { |
| 177 | release_resource(opl4->res_pcm_port); |
| 178 | kfree_nocheck(opl4->res_pcm_port); |
| 179 | } |
| 180 | kfree(opl4); |
| 181 | } |
| 182 | |
| 183 | static int snd_opl4_dev_free(snd_device_t *device) |
| 184 | { |
| 185 | opl4_t *opl4 = device->device_data; |
| 186 | snd_opl4_free(opl4); |
| 187 | return 0; |
| 188 | } |
| 189 | |
| 190 | int snd_opl4_create(snd_card_t *card, |
| 191 | unsigned long fm_port, unsigned long pcm_port, |
| 192 | int seq_device, |
| 193 | opl3_t **ropl3, opl4_t **ropl4) |
| 194 | { |
| 195 | opl4_t *opl4; |
| 196 | opl3_t *opl3; |
| 197 | int err; |
| 198 | static snd_device_ops_t ops = { |
| 199 | .dev_free = snd_opl4_dev_free |
| 200 | }; |
| 201 | |
| 202 | if (ropl3) |
| 203 | *ropl3 = NULL; |
| 204 | if (ropl4) |
| 205 | *ropl4 = NULL; |
| 206 | |
| 207 | opl4 = kcalloc(1, sizeof(*opl4), GFP_KERNEL); |
| 208 | if (!opl4) |
| 209 | return -ENOMEM; |
| 210 | |
| 211 | opl4->res_fm_port = request_region(fm_port, 8, "OPL4 FM"); |
| 212 | opl4->res_pcm_port = request_region(pcm_port, 8, "OPL4 PCM/MIX"); |
| 213 | if (!opl4->res_fm_port || !opl4->res_pcm_port) { |
| 214 | snd_printk(KERN_ERR "opl4: can't grab ports 0x%lx, 0x%lx\n", fm_port, pcm_port); |
| 215 | snd_opl4_free(opl4); |
| 216 | return -EBUSY; |
| 217 | } |
| 218 | |
| 219 | opl4->card = card; |
| 220 | opl4->fm_port = fm_port; |
| 221 | opl4->pcm_port = pcm_port; |
| 222 | spin_lock_init(&opl4->reg_lock); |
| 223 | init_MUTEX(&opl4->access_mutex); |
| 224 | |
| 225 | err = snd_opl4_detect(opl4); |
| 226 | if (err < 0) { |
| 227 | snd_opl4_free(opl4); |
| 228 | snd_printd("OPL4 chip not detected at %#lx/%#lx\n", fm_port, pcm_port); |
| 229 | return err; |
| 230 | } |
| 231 | |
| 232 | err = snd_device_new(card, SNDRV_DEV_CODEC, opl4, &ops); |
| 233 | if (err < 0) { |
| 234 | snd_opl4_free(opl4); |
| 235 | return err; |
| 236 | } |
| 237 | |
| 238 | err = snd_opl3_create(card, fm_port, fm_port + 2, opl4->hardware, 1, &opl3); |
| 239 | if (err < 0) { |
| 240 | snd_device_free(card, opl4); |
| 241 | return err; |
| 242 | } |
| 243 | |
| 244 | /* opl3 initialization disabled opl4, so reenable */ |
| 245 | snd_opl4_enable_opl4(opl4); |
| 246 | |
| 247 | snd_opl4_create_mixer(opl4); |
| 248 | #ifdef CONFIG_PROC_FS |
| 249 | snd_opl4_create_proc(opl4); |
| 250 | #endif |
| 251 | |
| 252 | #if defined(CONFIG_SND_SEQUENCER) || (defined(MODULE) && defined(CONFIG_SND_SEQUENCER_MODULE)) |
| 253 | opl4->seq_client = -1; |
| 254 | if (opl4->hardware < OPL3_HW_OPL4_ML) |
| 255 | snd_opl4_create_seq_dev(opl4, seq_device); |
| 256 | #endif |
| 257 | |
| 258 | if (ropl3) |
| 259 | *ropl3 = opl3; |
| 260 | if (ropl4) |
| 261 | *ropl4 = opl4; |
| 262 | return 0; |
| 263 | } |
| 264 | |
| 265 | EXPORT_SYMBOL(snd_opl4_write); |
| 266 | EXPORT_SYMBOL(snd_opl4_read); |
| 267 | EXPORT_SYMBOL(snd_opl4_write_memory); |
| 268 | EXPORT_SYMBOL(snd_opl4_read_memory); |
| 269 | EXPORT_SYMBOL(snd_opl4_create); |
| 270 | |
| 271 | static int __init alsa_opl4_init(void) |
| 272 | { |
| 273 | return 0; |
| 274 | } |
| 275 | |
| 276 | static void __exit alsa_opl4_exit(void) |
| 277 | { |
| 278 | } |
| 279 | |
| 280 | module_init(alsa_opl4_init) |
| 281 | module_exit(alsa_opl4_exit) |