Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Driver for Digigram VX soundcards |
| 3 | * |
| 4 | * Hardware core part |
| 5 | * |
| 6 | * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> |
| 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include <linux/delay.h> |
| 24 | #include <linux/slab.h> |
| 25 | #include <linux/interrupt.h> |
| 26 | #include <linux/init.h> |
| 27 | #include <linux/device.h> |
| 28 | #include <linux/firmware.h> |
| 29 | #include <sound/core.h> |
| 30 | #include <sound/pcm.h> |
| 31 | #include <sound/asoundef.h> |
| 32 | #include <sound/info.h> |
| 33 | #include <asm/io.h> |
| 34 | #include <sound/vx_core.h> |
| 35 | #include "vx_cmd.h" |
| 36 | |
| 37 | MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); |
| 38 | MODULE_DESCRIPTION("Common routines for Digigram VX drivers"); |
| 39 | MODULE_LICENSE("GPL"); |
| 40 | |
| 41 | |
| 42 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | * vx_check_reg_bit - wait for the specified bit is set/reset on a register |
| 44 | * @reg: register to check |
| 45 | * @mask: bit mask |
| 46 | * @bit: resultant bit to be checked |
| 47 | * @time: time-out of loop in msec |
| 48 | * |
| 49 | * returns zero if a bit matches, or a negative error code. |
| 50 | */ |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 51 | int snd_vx_check_reg_bit(struct vx_core *chip, int reg, int mask, int bit, int time) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | { |
| 53 | unsigned long end_time = jiffies + (time * HZ + 999) / 1000; |
| 54 | #ifdef CONFIG_SND_DEBUG |
| 55 | static char *reg_names[VX_REG_MAX] = { |
| 56 | "ICR", "CVR", "ISR", "IVR", "RXH", "RXM", "RXL", |
| 57 | "DMA", "CDSP", "RFREQ", "RUER/V2", "DATA", "MEMIRQ", |
| 58 | "ACQ", "BIT0", "BIT1", "MIC0", "MIC1", "MIC2", |
| 59 | "MIC3", "INTCSR", "CNTRL", "GPIOC", |
| 60 | "LOFREQ", "HIFREQ", "CSUER", "RUER" |
| 61 | }; |
| 62 | #endif |
| 63 | do { |
| 64 | if ((snd_vx_inb(chip, reg) & mask) == bit) |
| 65 | return 0; |
Takashi Iwai | bdbae7e | 2005-11-17 10:21:19 +0100 | [diff] [blame] | 66 | //msleep(10); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | } while (time_after_eq(end_time, jiffies)); |
| 68 | snd_printd(KERN_DEBUG "vx_check_reg_bit: timeout, reg=%s, mask=0x%x, val=0x%x\n", reg_names[reg], mask, snd_vx_inb(chip, reg)); |
| 69 | return -EIO; |
| 70 | } |
| 71 | |
Takashi Iwai | fa325eb | 2006-04-28 15:13:40 +0200 | [diff] [blame] | 72 | EXPORT_SYMBOL(snd_vx_check_reg_bit); |
| 73 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | /* |
| 75 | * vx_send_irq_dsp - set command irq bit |
| 76 | * @num: the requested IRQ type, IRQ_XXX |
| 77 | * |
| 78 | * this triggers the specified IRQ request |
| 79 | * returns 0 if successful, or a negative error code. |
| 80 | * |
| 81 | */ |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 82 | static int vx_send_irq_dsp(struct vx_core *chip, int num) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | { |
| 84 | int nirq; |
| 85 | |
| 86 | /* wait for Hc = 0 */ |
| 87 | if (snd_vx_check_reg_bit(chip, VX_CVR, CVR_HC, 0, 200) < 0) |
| 88 | return -EIO; |
| 89 | |
| 90 | nirq = num; |
| 91 | if (vx_has_new_dsp(chip)) |
| 92 | nirq += VXP_IRQ_OFFSET; |
| 93 | vx_outb(chip, CVR, (nirq >> 1) | CVR_HC); |
| 94 | return 0; |
| 95 | } |
| 96 | |
| 97 | |
| 98 | /* |
| 99 | * vx_reset_chk - reset CHK bit on ISR |
| 100 | * |
| 101 | * returns 0 if successful, or a negative error code. |
| 102 | */ |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 103 | static int vx_reset_chk(struct vx_core *chip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | { |
| 105 | /* Reset irq CHK */ |
| 106 | if (vx_send_irq_dsp(chip, IRQ_RESET_CHK) < 0) |
| 107 | return -EIO; |
| 108 | /* Wait until CHK = 0 */ |
| 109 | if (vx_check_isr(chip, ISR_CHK, 0, 200) < 0) |
| 110 | return -EIO; |
| 111 | return 0; |
| 112 | } |
| 113 | |
| 114 | /* |
| 115 | * vx_transfer_end - terminate message transfer |
| 116 | * @cmd: IRQ message to send (IRQ_MESS_XXX_END) |
| 117 | * |
| 118 | * returns 0 if successful, or a negative error code. |
| 119 | * the error code can be VX-specific, retrieved via vx_get_error(). |
| 120 | * NB: call with spinlock held! |
| 121 | */ |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 122 | static int vx_transfer_end(struct vx_core *chip, int cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | { |
| 124 | int err; |
| 125 | |
| 126 | if ((err = vx_reset_chk(chip)) < 0) |
| 127 | return err; |
| 128 | |
| 129 | /* irq MESS_READ/WRITE_END */ |
| 130 | if ((err = vx_send_irq_dsp(chip, cmd)) < 0) |
| 131 | return err; |
| 132 | |
| 133 | /* Wait CHK = 1 */ |
| 134 | if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) |
| 135 | return err; |
| 136 | |
| 137 | /* If error, Read RX */ |
| 138 | if ((err = vx_inb(chip, ISR)) & ISR_ERR) { |
| 139 | if ((err = vx_wait_for_rx_full(chip)) < 0) { |
| 140 | snd_printd(KERN_DEBUG "transfer_end: error in rx_full\n"); |
| 141 | return err; |
| 142 | } |
| 143 | err = vx_inb(chip, RXH) << 16; |
| 144 | err |= vx_inb(chip, RXM) << 8; |
| 145 | err |= vx_inb(chip, RXL); |
| 146 | snd_printd(KERN_DEBUG "transfer_end: error = 0x%x\n", err); |
| 147 | return -(VX_ERR_MASK | err); |
| 148 | } |
| 149 | return 0; |
| 150 | } |
| 151 | |
| 152 | /* |
| 153 | * vx_read_status - return the status rmh |
| 154 | * @rmh: rmh record to store the status |
| 155 | * |
| 156 | * returns 0 if successful, or a negative error code. |
| 157 | * the error code can be VX-specific, retrieved via vx_get_error(). |
| 158 | * NB: call with spinlock held! |
| 159 | */ |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 160 | static int vx_read_status(struct vx_core *chip, struct vx_rmh *rmh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | { |
| 162 | int i, err, val, size; |
| 163 | |
| 164 | /* no read necessary? */ |
| 165 | if (rmh->DspStat == RMH_SSIZE_FIXED && rmh->LgStat == 0) |
| 166 | return 0; |
| 167 | |
| 168 | /* Wait for RX full (with timeout protection) |
| 169 | * The first word of status is in RX |
| 170 | */ |
| 171 | err = vx_wait_for_rx_full(chip); |
| 172 | if (err < 0) |
| 173 | return err; |
| 174 | |
| 175 | /* Read RX */ |
| 176 | val = vx_inb(chip, RXH) << 16; |
| 177 | val |= vx_inb(chip, RXM) << 8; |
| 178 | val |= vx_inb(chip, RXL); |
| 179 | |
| 180 | /* If status given by DSP, let's decode its size */ |
| 181 | switch (rmh->DspStat) { |
| 182 | case RMH_SSIZE_ARG: |
| 183 | size = val & 0xff; |
| 184 | rmh->Stat[0] = val & 0xffff00; |
| 185 | rmh->LgStat = size + 1; |
| 186 | break; |
| 187 | case RMH_SSIZE_MASK: |
| 188 | /* Let's count the arg numbers from a mask */ |
| 189 | rmh->Stat[0] = val; |
| 190 | size = 0; |
| 191 | while (val) { |
| 192 | if (val & 0x01) |
| 193 | size++; |
| 194 | val >>= 1; |
| 195 | } |
| 196 | rmh->LgStat = size + 1; |
| 197 | break; |
| 198 | default: |
| 199 | /* else retrieve the status length given by the driver */ |
| 200 | size = rmh->LgStat; |
| 201 | rmh->Stat[0] = val; /* Val is the status 1st word */ |
| 202 | size--; /* hence adjust remaining length */ |
| 203 | break; |
| 204 | } |
| 205 | |
| 206 | if (size < 1) |
| 207 | return 0; |
Takashi Iwai | 5e246b8 | 2008-08-08 17:12:47 +0200 | [diff] [blame] | 208 | if (snd_BUG_ON(size > SIZE_MAX_STATUS)) |
| 209 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | |
| 211 | for (i = 1; i <= size; i++) { |
| 212 | /* trigger an irq MESS_WRITE_NEXT */ |
| 213 | err = vx_send_irq_dsp(chip, IRQ_MESS_WRITE_NEXT); |
| 214 | if (err < 0) |
| 215 | return err; |
| 216 | /* Wait for RX full (with timeout protection) */ |
| 217 | err = vx_wait_for_rx_full(chip); |
| 218 | if (err < 0) |
| 219 | return err; |
| 220 | rmh->Stat[i] = vx_inb(chip, RXH) << 16; |
| 221 | rmh->Stat[i] |= vx_inb(chip, RXM) << 8; |
| 222 | rmh->Stat[i] |= vx_inb(chip, RXL); |
| 223 | } |
| 224 | |
| 225 | return vx_transfer_end(chip, IRQ_MESS_WRITE_END); |
| 226 | } |
| 227 | |
| 228 | |
| 229 | #define MASK_MORE_THAN_1_WORD_COMMAND 0x00008000 |
| 230 | #define MASK_1_WORD_COMMAND 0x00ff7fff |
| 231 | |
| 232 | /* |
| 233 | * vx_send_msg_nolock - send a DSP message and read back the status |
| 234 | * @rmh: the rmh record to send and receive |
| 235 | * |
| 236 | * returns 0 if successful, or a negative error code. |
| 237 | * the error code can be VX-specific, retrieved via vx_get_error(). |
| 238 | * |
| 239 | * this function doesn't call spinlock at all. |
| 240 | */ |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 241 | int vx_send_msg_nolock(struct vx_core *chip, struct vx_rmh *rmh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | { |
| 243 | int i, err; |
| 244 | |
| 245 | if (chip->chip_status & VX_STAT_IS_STALE) |
| 246 | return -EBUSY; |
| 247 | |
| 248 | if ((err = vx_reset_chk(chip)) < 0) { |
| 249 | snd_printd(KERN_DEBUG "vx_send_msg: vx_reset_chk error\n"); |
| 250 | return err; |
| 251 | } |
| 252 | |
| 253 | #if 0 |
| 254 | printk(KERN_DEBUG "rmh: cmd = 0x%06x, length = %d, stype = %d\n", |
| 255 | rmh->Cmd[0], rmh->LgCmd, rmh->DspStat); |
| 256 | if (rmh->LgCmd > 1) { |
| 257 | printk(KERN_DEBUG " "); |
| 258 | for (i = 1; i < rmh->LgCmd; i++) |
| 259 | printk("0x%06x ", rmh->Cmd[i]); |
| 260 | printk("\n"); |
| 261 | } |
| 262 | #endif |
| 263 | /* Check bit M is set according to length of the command */ |
| 264 | if (rmh->LgCmd > 1) |
| 265 | rmh->Cmd[0] |= MASK_MORE_THAN_1_WORD_COMMAND; |
| 266 | else |
| 267 | rmh->Cmd[0] &= MASK_1_WORD_COMMAND; |
| 268 | |
| 269 | /* Wait for TX empty */ |
| 270 | if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) { |
| 271 | snd_printd(KERN_DEBUG "vx_send_msg: wait tx empty error\n"); |
| 272 | return err; |
| 273 | } |
| 274 | |
| 275 | /* Write Cmd[0] */ |
| 276 | vx_outb(chip, TXH, (rmh->Cmd[0] >> 16) & 0xff); |
| 277 | vx_outb(chip, TXM, (rmh->Cmd[0] >> 8) & 0xff); |
| 278 | vx_outb(chip, TXL, rmh->Cmd[0] & 0xff); |
| 279 | |
| 280 | /* Trigger irq MESSAGE */ |
| 281 | if ((err = vx_send_irq_dsp(chip, IRQ_MESSAGE)) < 0) { |
| 282 | snd_printd(KERN_DEBUG "vx_send_msg: send IRQ_MESSAGE error\n"); |
| 283 | return err; |
| 284 | } |
| 285 | |
| 286 | /* Wait for CHK = 1 */ |
| 287 | if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) |
| 288 | return err; |
| 289 | |
| 290 | /* If error, get error value from RX */ |
| 291 | if (vx_inb(chip, ISR) & ISR_ERR) { |
| 292 | if ((err = vx_wait_for_rx_full(chip)) < 0) { |
| 293 | snd_printd(KERN_DEBUG "vx_send_msg: rx_full read error\n"); |
| 294 | return err; |
| 295 | } |
| 296 | err = vx_inb(chip, RXH) << 16; |
| 297 | err |= vx_inb(chip, RXM) << 8; |
| 298 | err |= vx_inb(chip, RXL); |
| 299 | snd_printd(KERN_DEBUG "msg got error = 0x%x at cmd[0]\n", err); |
| 300 | err = -(VX_ERR_MASK | err); |
| 301 | return err; |
| 302 | } |
| 303 | |
| 304 | /* Send the other words */ |
| 305 | if (rmh->LgCmd > 1) { |
| 306 | for (i = 1; i < rmh->LgCmd; i++) { |
| 307 | /* Wait for TX ready */ |
| 308 | if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 0) { |
| 309 | snd_printd(KERN_DEBUG "vx_send_msg: tx_ready error\n"); |
| 310 | return err; |
| 311 | } |
| 312 | |
| 313 | /* Write Cmd[i] */ |
| 314 | vx_outb(chip, TXH, (rmh->Cmd[i] >> 16) & 0xff); |
| 315 | vx_outb(chip, TXM, (rmh->Cmd[i] >> 8) & 0xff); |
| 316 | vx_outb(chip, TXL, rmh->Cmd[i] & 0xff); |
| 317 | |
| 318 | /* Trigger irq MESS_READ_NEXT */ |
| 319 | if ((err = vx_send_irq_dsp(chip, IRQ_MESS_READ_NEXT)) < 0) { |
| 320 | snd_printd(KERN_DEBUG "vx_send_msg: IRQ_READ_NEXT error\n"); |
| 321 | return err; |
| 322 | } |
| 323 | } |
| 324 | /* Wait for TX empty */ |
| 325 | if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 0) { |
| 326 | snd_printd(KERN_DEBUG "vx_send_msg: TX_READY error\n"); |
| 327 | return err; |
| 328 | } |
| 329 | /* End of transfer */ |
| 330 | err = vx_transfer_end(chip, IRQ_MESS_READ_END); |
| 331 | if (err < 0) |
| 332 | return err; |
| 333 | } |
| 334 | |
| 335 | return vx_read_status(chip, rmh); |
| 336 | } |
| 337 | |
| 338 | |
| 339 | /* |
| 340 | * vx_send_msg - send a DSP message with spinlock |
| 341 | * @rmh: the rmh record to send and receive |
| 342 | * |
| 343 | * returns 0 if successful, or a negative error code. |
| 344 | * see vx_send_msg_nolock(). |
| 345 | */ |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 346 | int vx_send_msg(struct vx_core *chip, struct vx_rmh *rmh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | { |
| 348 | unsigned long flags; |
| 349 | int err; |
| 350 | |
| 351 | spin_lock_irqsave(&chip->lock, flags); |
| 352 | err = vx_send_msg_nolock(chip, rmh); |
| 353 | spin_unlock_irqrestore(&chip->lock, flags); |
| 354 | return err; |
| 355 | } |
| 356 | |
| 357 | |
| 358 | /* |
| 359 | * vx_send_rih_nolock - send an RIH to xilinx |
| 360 | * @cmd: the command to send |
| 361 | * |
| 362 | * returns 0 if successful, or a negative error code. |
| 363 | * the error code can be VX-specific, retrieved via vx_get_error(). |
| 364 | * |
| 365 | * this function doesn't call spinlock at all. |
| 366 | * |
| 367 | * unlike RMH, no command is sent to DSP. |
| 368 | */ |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 369 | int vx_send_rih_nolock(struct vx_core *chip, int cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | { |
| 371 | int err; |
| 372 | |
| 373 | if (chip->chip_status & VX_STAT_IS_STALE) |
| 374 | return -EBUSY; |
| 375 | |
| 376 | #if 0 |
| 377 | printk(KERN_DEBUG "send_rih: cmd = 0x%x\n", cmd); |
| 378 | #endif |
| 379 | if ((err = vx_reset_chk(chip)) < 0) |
| 380 | return err; |
| 381 | /* send the IRQ */ |
| 382 | if ((err = vx_send_irq_dsp(chip, cmd)) < 0) |
| 383 | return err; |
| 384 | /* Wait CHK = 1 */ |
| 385 | if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) |
| 386 | return err; |
| 387 | /* If error, read RX */ |
| 388 | if (vx_inb(chip, ISR) & ISR_ERR) { |
| 389 | if ((err = vx_wait_for_rx_full(chip)) < 0) |
| 390 | return err; |
| 391 | err = vx_inb(chip, RXH) << 16; |
| 392 | err |= vx_inb(chip, RXM) << 8; |
| 393 | err |= vx_inb(chip, RXL); |
| 394 | return -(VX_ERR_MASK | err); |
| 395 | } |
| 396 | return 0; |
| 397 | } |
| 398 | |
| 399 | |
| 400 | /* |
| 401 | * vx_send_rih - send an RIH with spinlock |
| 402 | * @cmd: the command to send |
| 403 | * |
| 404 | * see vx_send_rih_nolock(). |
| 405 | */ |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 406 | int vx_send_rih(struct vx_core *chip, int cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | { |
| 408 | unsigned long flags; |
| 409 | int err; |
| 410 | |
| 411 | spin_lock_irqsave(&chip->lock, flags); |
| 412 | err = vx_send_rih_nolock(chip, cmd); |
| 413 | spin_unlock_irqrestore(&chip->lock, flags); |
| 414 | return err; |
| 415 | } |
| 416 | |
| 417 | #define END_OF_RESET_WAIT_TIME 500 /* us */ |
| 418 | |
| 419 | /** |
| 420 | * snd_vx_boot_xilinx - boot up the xilinx interface |
| 421 | * @boot: the boot record to load |
| 422 | */ |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 423 | int snd_vx_load_boot_image(struct vx_core *chip, const struct firmware *boot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | { |
| 425 | unsigned int i; |
| 426 | int no_fillup = vx_has_new_dsp(chip); |
| 427 | |
| 428 | /* check the length of boot image */ |
Takashi Iwai | 5e246b8 | 2008-08-08 17:12:47 +0200 | [diff] [blame] | 429 | if (boot->size <= 0) |
| 430 | return -EINVAL; |
| 431 | if (boot->size % 3) |
| 432 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | #if 0 |
| 434 | { |
| 435 | /* more strict check */ |
| 436 | unsigned int c = ((u32)boot->data[0] << 16) | ((u32)boot->data[1] << 8) | boot->data[2]; |
Takashi Iwai | 5e246b8 | 2008-08-08 17:12:47 +0200 | [diff] [blame] | 437 | if (boot->size != (c + 2) * 3) |
| 438 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | } |
| 440 | #endif |
| 441 | |
| 442 | /* reset dsp */ |
| 443 | vx_reset_dsp(chip); |
| 444 | |
| 445 | udelay(END_OF_RESET_WAIT_TIME); /* another wait? */ |
| 446 | |
| 447 | /* download boot strap */ |
| 448 | for (i = 0; i < 0x600; i += 3) { |
| 449 | if (i >= boot->size) { |
| 450 | if (no_fillup) |
| 451 | break; |
| 452 | if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) { |
| 453 | snd_printk(KERN_ERR "dsp boot failed at %d\n", i); |
| 454 | return -EIO; |
| 455 | } |
| 456 | vx_outb(chip, TXH, 0); |
| 457 | vx_outb(chip, TXM, 0); |
| 458 | vx_outb(chip, TXL, 0); |
| 459 | } else { |
David Woodhouse | 2f0600b | 2008-05-24 00:02:49 +0100 | [diff] [blame] | 460 | const unsigned char *image = boot->data + i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) { |
| 462 | snd_printk(KERN_ERR "dsp boot failed at %d\n", i); |
| 463 | return -EIO; |
| 464 | } |
| 465 | vx_outb(chip, TXH, image[0]); |
| 466 | vx_outb(chip, TXM, image[1]); |
| 467 | vx_outb(chip, TXL, image[2]); |
| 468 | } |
| 469 | } |
| 470 | return 0; |
| 471 | } |
| 472 | |
Takashi Iwai | fa325eb | 2006-04-28 15:13:40 +0200 | [diff] [blame] | 473 | EXPORT_SYMBOL(snd_vx_load_boot_image); |
| 474 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | /* |
| 476 | * vx_test_irq_src - query the source of interrupts |
| 477 | * |
| 478 | * called from irq handler only |
| 479 | */ |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 480 | static int vx_test_irq_src(struct vx_core *chip, unsigned int *ret) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | { |
| 482 | int err; |
| 483 | |
| 484 | vx_init_rmh(&chip->irq_rmh, CMD_TEST_IT); |
| 485 | spin_lock(&chip->lock); |
| 486 | err = vx_send_msg_nolock(chip, &chip->irq_rmh); |
| 487 | if (err < 0) |
| 488 | *ret = 0; |
| 489 | else |
| 490 | *ret = chip->irq_rmh.Stat[0]; |
| 491 | spin_unlock(&chip->lock); |
| 492 | return err; |
| 493 | } |
| 494 | |
| 495 | |
| 496 | /* |
| 497 | * vx_interrupt - soft irq handler |
| 498 | */ |
| 499 | static void vx_interrupt(unsigned long private_data) |
| 500 | { |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 501 | struct vx_core *chip = (struct vx_core *) private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | unsigned int events; |
| 503 | |
| 504 | if (chip->chip_status & VX_STAT_IS_STALE) |
| 505 | return; |
| 506 | |
| 507 | if (vx_test_irq_src(chip, &events) < 0) |
| 508 | return; |
| 509 | |
| 510 | #if 0 |
| 511 | if (events & 0x000800) |
| 512 | printk(KERN_ERR "DSP Stream underrun ! IRQ events = 0x%x\n", events); |
| 513 | #endif |
| 514 | // printk(KERN_DEBUG "IRQ events = 0x%x\n", events); |
| 515 | |
| 516 | /* We must prevent any application using this DSP |
| 517 | * and block any further request until the application |
| 518 | * either unregisters or reloads the DSP |
| 519 | */ |
| 520 | if (events & FATAL_DSP_ERROR) { |
| 521 | snd_printk(KERN_ERR "vx_core: fatal DSP error!!\n"); |
| 522 | return; |
| 523 | } |
| 524 | |
| 525 | /* The start on time code conditions are filled (ie the time code |
| 526 | * received by the board is equal to one of those given to it). |
| 527 | */ |
| 528 | if (events & TIME_CODE_EVENT_PENDING) |
| 529 | ; /* so far, nothing to do yet */ |
| 530 | |
| 531 | /* The frequency has changed on the board (UER mode). */ |
| 532 | if (events & FREQUENCY_CHANGE_EVENT_PENDING) |
| 533 | vx_change_frequency(chip); |
| 534 | |
| 535 | /* update the pcm streams */ |
| 536 | vx_pcm_update_intr(chip, events); |
| 537 | } |
| 538 | |
| 539 | |
| 540 | /** |
| 541 | * snd_vx_irq_handler - interrupt handler |
| 542 | */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 543 | irqreturn_t snd_vx_irq_handler(int irq, void *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | { |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 545 | struct vx_core *chip = dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | |
| 547 | if (! (chip->chip_status & VX_STAT_CHIP_INIT) || |
| 548 | (chip->chip_status & VX_STAT_IS_STALE)) |
| 549 | return IRQ_NONE; |
| 550 | if (! vx_test_and_ack(chip)) |
Takashi Iwai | 1f04128 | 2008-12-18 12:17:55 +0100 | [diff] [blame] | 551 | tasklet_schedule(&chip->tq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | return IRQ_HANDLED; |
| 553 | } |
| 554 | |
Takashi Iwai | fa325eb | 2006-04-28 15:13:40 +0200 | [diff] [blame] | 555 | EXPORT_SYMBOL(snd_vx_irq_handler); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | |
| 557 | /* |
| 558 | */ |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 559 | static void vx_reset_board(struct vx_core *chip, int cold_reset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | { |
Takashi Iwai | 5e246b8 | 2008-08-08 17:12:47 +0200 | [diff] [blame] | 561 | if (snd_BUG_ON(!chip->ops->reset_board)) |
| 562 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | |
| 564 | /* current source, later sync'ed with target */ |
| 565 | chip->audio_source = VX_AUDIO_SRC_LINE; |
| 566 | if (cold_reset) { |
| 567 | chip->audio_source_target = chip->audio_source; |
| 568 | chip->clock_source = INTERNAL_QUARTZ; |
| 569 | chip->clock_mode = VX_CLOCK_MODE_AUTO; |
| 570 | chip->freq = 48000; |
| 571 | chip->uer_detected = VX_UER_MODE_NOT_PRESENT; |
| 572 | chip->uer_bits = SNDRV_PCM_DEFAULT_CON_SPDIF; |
| 573 | } |
| 574 | |
| 575 | chip->ops->reset_board(chip, cold_reset); |
| 576 | |
| 577 | vx_reset_codec(chip, cold_reset); |
| 578 | |
| 579 | vx_set_internal_clock(chip, chip->freq); |
| 580 | |
| 581 | /* Reset the DSP */ |
| 582 | vx_reset_dsp(chip); |
| 583 | |
| 584 | if (vx_is_pcmcia(chip)) { |
| 585 | /* Acknowledge any pending IRQ and reset the MEMIRQ flag. */ |
| 586 | vx_test_and_ack(chip); |
| 587 | vx_validate_irq(chip, 1); |
| 588 | } |
| 589 | |
| 590 | /* init CBits */ |
| 591 | vx_set_iec958_status(chip, chip->uer_bits); |
| 592 | } |
| 593 | |
| 594 | |
| 595 | /* |
| 596 | * proc interface |
| 597 | */ |
| 598 | |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 599 | static void vx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | { |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 601 | struct vx_core *chip = entry->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | static char *audio_src_vxp[] = { "Line", "Mic", "Digital" }; |
| 603 | static char *audio_src_vx2[] = { "Analog", "Analog", "Digital" }; |
| 604 | static char *clock_mode[] = { "Auto", "Internal", "External" }; |
| 605 | static char *clock_src[] = { "Internal", "External" }; |
| 606 | static char *uer_type[] = { "Consumer", "Professional", "Not Present" }; |
| 607 | |
| 608 | snd_iprintf(buffer, "%s\n", chip->card->longname); |
| 609 | snd_iprintf(buffer, "Xilinx Firmware: %s\n", |
| 610 | chip->chip_status & VX_STAT_XILINX_LOADED ? "Loaded" : "No"); |
| 611 | snd_iprintf(buffer, "Device Initialized: %s\n", |
| 612 | chip->chip_status & VX_STAT_DEVICE_INIT ? "Yes" : "No"); |
| 613 | snd_iprintf(buffer, "DSP audio info:"); |
| 614 | if (chip->audio_info & VX_AUDIO_INFO_REAL_TIME) |
| 615 | snd_iprintf(buffer, " realtime"); |
| 616 | if (chip->audio_info & VX_AUDIO_INFO_OFFLINE) |
| 617 | snd_iprintf(buffer, " offline"); |
| 618 | if (chip->audio_info & VX_AUDIO_INFO_MPEG1) |
| 619 | snd_iprintf(buffer, " mpeg1"); |
| 620 | if (chip->audio_info & VX_AUDIO_INFO_MPEG2) |
| 621 | snd_iprintf(buffer, " mpeg2"); |
| 622 | if (chip->audio_info & VX_AUDIO_INFO_LINEAR_8) |
| 623 | snd_iprintf(buffer, " linear8"); |
| 624 | if (chip->audio_info & VX_AUDIO_INFO_LINEAR_16) |
| 625 | snd_iprintf(buffer, " linear16"); |
| 626 | if (chip->audio_info & VX_AUDIO_INFO_LINEAR_24) |
| 627 | snd_iprintf(buffer, " linear24"); |
| 628 | snd_iprintf(buffer, "\n"); |
| 629 | snd_iprintf(buffer, "Input Source: %s\n", vx_is_pcmcia(chip) ? |
| 630 | audio_src_vxp[chip->audio_source] : |
| 631 | audio_src_vx2[chip->audio_source]); |
| 632 | snd_iprintf(buffer, "Clock Mode: %s\n", clock_mode[chip->clock_mode]); |
| 633 | snd_iprintf(buffer, "Clock Source: %s\n", clock_src[chip->clock_source]); |
| 634 | snd_iprintf(buffer, "Frequency: %d\n", chip->freq); |
| 635 | snd_iprintf(buffer, "Detected Frequency: %d\n", chip->freq_detected); |
| 636 | snd_iprintf(buffer, "Detected UER type: %s\n", uer_type[chip->uer_detected]); |
| 637 | snd_iprintf(buffer, "Min/Max/Cur IBL: %d/%d/%d (granularity=%d)\n", |
| 638 | chip->ibl.min_size, chip->ibl.max_size, chip->ibl.size, |
| 639 | chip->ibl.granularity); |
| 640 | } |
| 641 | |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 642 | static void vx_proc_init(struct vx_core *chip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | { |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 644 | struct snd_info_entry *entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | |
| 646 | if (! snd_card_proc_new(chip->card, "vx-status", &entry)) |
Takashi Iwai | bf85020 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 647 | snd_info_set_text_ops(entry, chip, vx_proc_read); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | } |
| 649 | |
| 650 | |
| 651 | /** |
| 652 | * snd_vx_dsp_boot - load the DSP boot |
| 653 | */ |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 654 | int snd_vx_dsp_boot(struct vx_core *chip, const struct firmware *boot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | { |
| 656 | int err; |
| 657 | int cold_reset = !(chip->chip_status & VX_STAT_DEVICE_INIT); |
| 658 | |
| 659 | vx_reset_board(chip, cold_reset); |
| 660 | vx_validate_irq(chip, 0); |
| 661 | |
| 662 | if ((err = snd_vx_load_boot_image(chip, boot)) < 0) |
| 663 | return err; |
Takashi Iwai | bdbae7e | 2005-11-17 10:21:19 +0100 | [diff] [blame] | 664 | msleep(10); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | |
| 666 | return 0; |
| 667 | } |
| 668 | |
Takashi Iwai | fa325eb | 2006-04-28 15:13:40 +0200 | [diff] [blame] | 669 | EXPORT_SYMBOL(snd_vx_dsp_boot); |
| 670 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | /** |
| 672 | * snd_vx_dsp_load - load the DSP image |
| 673 | */ |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 674 | int snd_vx_dsp_load(struct vx_core *chip, const struct firmware *dsp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | { |
| 676 | unsigned int i; |
| 677 | int err; |
| 678 | unsigned int csum = 0; |
David Woodhouse | 2f0600b | 2008-05-24 00:02:49 +0100 | [diff] [blame] | 679 | const unsigned char *image, *cptr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | |
Takashi Iwai | 5e246b8 | 2008-08-08 17:12:47 +0200 | [diff] [blame] | 681 | if (dsp->size % 3) |
| 682 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | |
| 684 | vx_toggle_dac_mute(chip, 1); |
| 685 | |
| 686 | /* Transfert data buffer from PC to DSP */ |
| 687 | for (i = 0; i < dsp->size; i += 3) { |
| 688 | image = dsp->data + i; |
| 689 | /* Wait DSP ready for a new read */ |
| 690 | if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) { |
Takashi Iwai | 4520383 | 2009-02-05 15:51:50 +0100 | [diff] [blame] | 691 | printk(KERN_ERR |
| 692 | "dsp loading error at position %d\n", i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | return err; |
| 694 | } |
| 695 | cptr = image; |
| 696 | csum ^= *cptr; |
| 697 | csum = (csum >> 24) | (csum << 8); |
| 698 | vx_outb(chip, TXH, *cptr++); |
| 699 | csum ^= *cptr; |
| 700 | csum = (csum >> 24) | (csum << 8); |
| 701 | vx_outb(chip, TXM, *cptr++); |
| 702 | csum ^= *cptr; |
| 703 | csum = (csum >> 24) | (csum << 8); |
| 704 | vx_outb(chip, TXL, *cptr++); |
| 705 | } |
| 706 | snd_printdd(KERN_DEBUG "checksum = 0x%08x\n", csum); |
| 707 | |
Takashi Iwai | bdbae7e | 2005-11-17 10:21:19 +0100 | [diff] [blame] | 708 | msleep(200); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | |
| 710 | if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0) |
| 711 | return err; |
| 712 | |
| 713 | vx_toggle_dac_mute(chip, 0); |
| 714 | |
| 715 | vx_test_and_ack(chip); |
| 716 | vx_validate_irq(chip, 1); |
| 717 | |
| 718 | return 0; |
| 719 | } |
| 720 | |
Takashi Iwai | fa325eb | 2006-04-28 15:13:40 +0200 | [diff] [blame] | 721 | EXPORT_SYMBOL(snd_vx_dsp_load); |
| 722 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | #ifdef CONFIG_PM |
| 724 | /* |
| 725 | * suspend |
| 726 | */ |
Takashi Iwai | 0ed1cad | 2005-11-17 16:06:05 +0100 | [diff] [blame] | 727 | int snd_vx_suspend(struct vx_core *chip, pm_message_t state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | unsigned int i; |
| 730 | |
Takashi Iwai | 0ed1cad | 2005-11-17 16:06:05 +0100 | [diff] [blame] | 731 | snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | chip->chip_status |= VX_STAT_IN_SUSPEND; |
| 733 | for (i = 0; i < chip->hw->num_codecs; i++) |
| 734 | snd_pcm_suspend_all(chip->pcm[i]); |
| 735 | |
| 736 | return 0; |
| 737 | } |
| 738 | |
Takashi Iwai | fa325eb | 2006-04-28 15:13:40 +0200 | [diff] [blame] | 739 | EXPORT_SYMBOL(snd_vx_suspend); |
| 740 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | /* |
| 742 | * resume |
| 743 | */ |
Takashi Iwai | 0ed1cad | 2005-11-17 16:06:05 +0100 | [diff] [blame] | 744 | int snd_vx_resume(struct vx_core *chip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | int i, err; |
| 747 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | chip->chip_status &= ~VX_STAT_CHIP_INIT; |
| 749 | |
| 750 | for (i = 0; i < 4; i++) { |
| 751 | if (! chip->firmware[i]) |
| 752 | continue; |
| 753 | err = chip->ops->load_dsp(chip, i, chip->firmware[i]); |
| 754 | if (err < 0) { |
| 755 | snd_printk(KERN_ERR "vx: firmware resume error at DSP %d\n", i); |
| 756 | return -EIO; |
| 757 | } |
| 758 | } |
| 759 | |
| 760 | chip->chip_status |= VX_STAT_CHIP_INIT; |
| 761 | chip->chip_status &= ~VX_STAT_IN_SUSPEND; |
| 762 | |
Takashi Iwai | 0ed1cad | 2005-11-17 16:06:05 +0100 | [diff] [blame] | 763 | snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | return 0; |
| 765 | } |
| 766 | |
Takashi Iwai | fa325eb | 2006-04-28 15:13:40 +0200 | [diff] [blame] | 767 | EXPORT_SYMBOL(snd_vx_resume); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | #endif |
| 769 | |
| 770 | /** |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 771 | * snd_vx_create - constructor for struct vx_core |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | * @hw: hardware specific record |
| 773 | * |
| 774 | * this function allocates the instance and prepare for the hardware |
| 775 | * initialization. |
| 776 | * |
| 777 | * return the instance pointer if successful, NULL in error. |
| 778 | */ |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 779 | struct vx_core *snd_vx_create(struct snd_card *card, struct snd_vx_hardware *hw, |
| 780 | struct snd_vx_ops *ops, |
| 781 | int extra_size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | { |
Takashi Iwai | af26367 | 2005-11-17 14:46:59 +0100 | [diff] [blame] | 783 | struct vx_core *chip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | |
Takashi Iwai | 5e246b8 | 2008-08-08 17:12:47 +0200 | [diff] [blame] | 785 | if (snd_BUG_ON(!card || !hw || !ops)) |
| 786 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | |
Takashi Iwai | 561b220 | 2005-09-09 14:22:34 +0200 | [diff] [blame] | 788 | chip = kzalloc(sizeof(*chip) + extra_size, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | if (! chip) { |
| 790 | snd_printk(KERN_ERR "vx_core: no memory\n"); |
| 791 | return NULL; |
| 792 | } |
| 793 | spin_lock_init(&chip->lock); |
| 794 | spin_lock_init(&chip->irq_lock); |
| 795 | chip->irq = -1; |
| 796 | chip->hw = hw; |
| 797 | chip->type = hw->type; |
| 798 | chip->ops = ops; |
| 799 | tasklet_init(&chip->tq, vx_interrupt, (unsigned long)chip); |
Ingo Molnar | ef9f0a4 | 2006-01-16 16:31:42 +0100 | [diff] [blame] | 800 | mutex_init(&chip->mixer_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | |
| 802 | chip->card = card; |
| 803 | card->private_data = chip; |
| 804 | strcpy(card->driver, hw->name); |
| 805 | sprintf(card->shortname, "Digigram %s", hw->name); |
| 806 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | vx_proc_init(chip); |
| 808 | |
| 809 | return chip; |
| 810 | } |
| 811 | |
Takashi Iwai | fa325eb | 2006-04-28 15:13:40 +0200 | [diff] [blame] | 812 | EXPORT_SYMBOL(snd_vx_create); |
| 813 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | /* |
| 815 | * module entries |
| 816 | */ |
| 817 | static int __init alsa_vx_core_init(void) |
| 818 | { |
| 819 | return 0; |
| 820 | } |
| 821 | |
| 822 | static void __exit alsa_vx_core_exit(void) |
| 823 | { |
| 824 | } |
| 825 | |
| 826 | module_init(alsa_vx_core_init) |
| 827 | module_exit(alsa_vx_core_exit) |