[ALSA] vx-driver - Fix PM support
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / sound / drivers / vx / vx_core.c
blob43f615d7a545ca4be36757157a091fbddc769003
1 /*
2 * Driver for Digigram VX soundcards
4 * Hardware core part
6 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
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.
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.
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
23 #include <sound/driver.h>
24 #include <linux/delay.h>
25 #include <linux/slab.h>
26 #include <linux/interrupt.h>
27 #include <linux/init.h>
28 #include <linux/device.h>
29 #include <linux/firmware.h>
30 #include <sound/core.h>
31 #include <sound/pcm.h>
32 #include <sound/asoundef.h>
33 #include <sound/info.h>
34 #include <asm/io.h>
35 #include <sound/vx_core.h>
36 #include "vx_cmd.h"
38 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
39 MODULE_DESCRIPTION("Common routines for Digigram VX drivers");
40 MODULE_LICENSE("GPL");
44 * vx_check_reg_bit - wait for the specified bit is set/reset on a register
45 * @reg: register to check
46 * @mask: bit mask
47 * @bit: resultant bit to be checked
48 * @time: time-out of loop in msec
50 * returns zero if a bit matches, or a negative error code.
52 int snd_vx_check_reg_bit(struct vx_core *chip, int reg, int mask, int bit, int time)
54 unsigned long end_time = jiffies + (time * HZ + 999) / 1000;
55 #ifdef CONFIG_SND_DEBUG
56 static char *reg_names[VX_REG_MAX] = {
57 "ICR", "CVR", "ISR", "IVR", "RXH", "RXM", "RXL",
58 "DMA", "CDSP", "RFREQ", "RUER/V2", "DATA", "MEMIRQ",
59 "ACQ", "BIT0", "BIT1", "MIC0", "MIC1", "MIC2",
60 "MIC3", "INTCSR", "CNTRL", "GPIOC",
61 "LOFREQ", "HIFREQ", "CSUER", "RUER"
63 #endif
64 do {
65 if ((snd_vx_inb(chip, reg) & mask) == bit)
66 return 0;
67 //msleep(10);
68 } while (time_after_eq(end_time, jiffies));
69 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));
70 return -EIO;
74 * vx_send_irq_dsp - set command irq bit
75 * @num: the requested IRQ type, IRQ_XXX
77 * this triggers the specified IRQ request
78 * returns 0 if successful, or a negative error code.
81 static int vx_send_irq_dsp(struct vx_core *chip, int num)
83 int nirq;
85 /* wait for Hc = 0 */
86 if (snd_vx_check_reg_bit(chip, VX_CVR, CVR_HC, 0, 200) < 0)
87 return -EIO;
89 nirq = num;
90 if (vx_has_new_dsp(chip))
91 nirq += VXP_IRQ_OFFSET;
92 vx_outb(chip, CVR, (nirq >> 1) | CVR_HC);
93 return 0;
98 * vx_reset_chk - reset CHK bit on ISR
100 * returns 0 if successful, or a negative error code.
102 static int vx_reset_chk(struct vx_core *chip)
104 /* Reset irq CHK */
105 if (vx_send_irq_dsp(chip, IRQ_RESET_CHK) < 0)
106 return -EIO;
107 /* Wait until CHK = 0 */
108 if (vx_check_isr(chip, ISR_CHK, 0, 200) < 0)
109 return -EIO;
110 return 0;
114 * vx_transfer_end - terminate message transfer
115 * @cmd: IRQ message to send (IRQ_MESS_XXX_END)
117 * returns 0 if successful, or a negative error code.
118 * the error code can be VX-specific, retrieved via vx_get_error().
119 * NB: call with spinlock held!
121 static int vx_transfer_end(struct vx_core *chip, int cmd)
123 int err;
125 if ((err = vx_reset_chk(chip)) < 0)
126 return err;
128 /* irq MESS_READ/WRITE_END */
129 if ((err = vx_send_irq_dsp(chip, cmd)) < 0)
130 return err;
132 /* Wait CHK = 1 */
133 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
134 return err;
136 /* If error, Read RX */
137 if ((err = vx_inb(chip, ISR)) & ISR_ERR) {
138 if ((err = vx_wait_for_rx_full(chip)) < 0) {
139 snd_printd(KERN_DEBUG "transfer_end: error in rx_full\n");
140 return err;
142 err = vx_inb(chip, RXH) << 16;
143 err |= vx_inb(chip, RXM) << 8;
144 err |= vx_inb(chip, RXL);
145 snd_printd(KERN_DEBUG "transfer_end: error = 0x%x\n", err);
146 return -(VX_ERR_MASK | err);
148 return 0;
152 * vx_read_status - return the status rmh
153 * @rmh: rmh record to store the status
155 * returns 0 if successful, or a negative error code.
156 * the error code can be VX-specific, retrieved via vx_get_error().
157 * NB: call with spinlock held!
159 static int vx_read_status(struct vx_core *chip, struct vx_rmh *rmh)
161 int i, err, val, size;
163 /* no read necessary? */
164 if (rmh->DspStat == RMH_SSIZE_FIXED && rmh->LgStat == 0)
165 return 0;
167 /* Wait for RX full (with timeout protection)
168 * The first word of status is in RX
170 err = vx_wait_for_rx_full(chip);
171 if (err < 0)
172 return err;
174 /* Read RX */
175 val = vx_inb(chip, RXH) << 16;
176 val |= vx_inb(chip, RXM) << 8;
177 val |= vx_inb(chip, RXL);
179 /* If status given by DSP, let's decode its size */
180 switch (rmh->DspStat) {
181 case RMH_SSIZE_ARG:
182 size = val & 0xff;
183 rmh->Stat[0] = val & 0xffff00;
184 rmh->LgStat = size + 1;
185 break;
186 case RMH_SSIZE_MASK:
187 /* Let's count the arg numbers from a mask */
188 rmh->Stat[0] = val;
189 size = 0;
190 while (val) {
191 if (val & 0x01)
192 size++;
193 val >>= 1;
195 rmh->LgStat = size + 1;
196 break;
197 default:
198 /* else retrieve the status length given by the driver */
199 size = rmh->LgStat;
200 rmh->Stat[0] = val; /* Val is the status 1st word */
201 size--; /* hence adjust remaining length */
202 break;
205 if (size < 1)
206 return 0;
207 snd_assert(size <= SIZE_MAX_STATUS, return -EINVAL);
209 for (i = 1; i <= size; i++) {
210 /* trigger an irq MESS_WRITE_NEXT */
211 err = vx_send_irq_dsp(chip, IRQ_MESS_WRITE_NEXT);
212 if (err < 0)
213 return err;
214 /* Wait for RX full (with timeout protection) */
215 err = vx_wait_for_rx_full(chip);
216 if (err < 0)
217 return err;
218 rmh->Stat[i] = vx_inb(chip, RXH) << 16;
219 rmh->Stat[i] |= vx_inb(chip, RXM) << 8;
220 rmh->Stat[i] |= vx_inb(chip, RXL);
223 return vx_transfer_end(chip, IRQ_MESS_WRITE_END);
227 #define MASK_MORE_THAN_1_WORD_COMMAND 0x00008000
228 #define MASK_1_WORD_COMMAND 0x00ff7fff
231 * vx_send_msg_nolock - send a DSP message and read back the status
232 * @rmh: the rmh record to send and receive
234 * returns 0 if successful, or a negative error code.
235 * the error code can be VX-specific, retrieved via vx_get_error().
237 * this function doesn't call spinlock at all.
239 int vx_send_msg_nolock(struct vx_core *chip, struct vx_rmh *rmh)
241 int i, err;
243 if (chip->chip_status & VX_STAT_IS_STALE)
244 return -EBUSY;
246 if ((err = vx_reset_chk(chip)) < 0) {
247 snd_printd(KERN_DEBUG "vx_send_msg: vx_reset_chk error\n");
248 return err;
251 #if 0
252 printk(KERN_DEBUG "rmh: cmd = 0x%06x, length = %d, stype = %d\n",
253 rmh->Cmd[0], rmh->LgCmd, rmh->DspStat);
254 if (rmh->LgCmd > 1) {
255 printk(KERN_DEBUG " ");
256 for (i = 1; i < rmh->LgCmd; i++)
257 printk("0x%06x ", rmh->Cmd[i]);
258 printk("\n");
260 #endif
261 /* Check bit M is set according to length of the command */
262 if (rmh->LgCmd > 1)
263 rmh->Cmd[0] |= MASK_MORE_THAN_1_WORD_COMMAND;
264 else
265 rmh->Cmd[0] &= MASK_1_WORD_COMMAND;
267 /* Wait for TX empty */
268 if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) {
269 snd_printd(KERN_DEBUG "vx_send_msg: wait tx empty error\n");
270 return err;
273 /* Write Cmd[0] */
274 vx_outb(chip, TXH, (rmh->Cmd[0] >> 16) & 0xff);
275 vx_outb(chip, TXM, (rmh->Cmd[0] >> 8) & 0xff);
276 vx_outb(chip, TXL, rmh->Cmd[0] & 0xff);
278 /* Trigger irq MESSAGE */
279 if ((err = vx_send_irq_dsp(chip, IRQ_MESSAGE)) < 0) {
280 snd_printd(KERN_DEBUG "vx_send_msg: send IRQ_MESSAGE error\n");
281 return err;
284 /* Wait for CHK = 1 */
285 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
286 return err;
288 /* If error, get error value from RX */
289 if (vx_inb(chip, ISR) & ISR_ERR) {
290 if ((err = vx_wait_for_rx_full(chip)) < 0) {
291 snd_printd(KERN_DEBUG "vx_send_msg: rx_full read error\n");
292 return err;
294 err = vx_inb(chip, RXH) << 16;
295 err |= vx_inb(chip, RXM) << 8;
296 err |= vx_inb(chip, RXL);
297 snd_printd(KERN_DEBUG "msg got error = 0x%x at cmd[0]\n", err);
298 err = -(VX_ERR_MASK | err);
299 return err;
302 /* Send the other words */
303 if (rmh->LgCmd > 1) {
304 for (i = 1; i < rmh->LgCmd; i++) {
305 /* Wait for TX ready */
306 if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 0) {
307 snd_printd(KERN_DEBUG "vx_send_msg: tx_ready error\n");
308 return err;
311 /* Write Cmd[i] */
312 vx_outb(chip, TXH, (rmh->Cmd[i] >> 16) & 0xff);
313 vx_outb(chip, TXM, (rmh->Cmd[i] >> 8) & 0xff);
314 vx_outb(chip, TXL, rmh->Cmd[i] & 0xff);
316 /* Trigger irq MESS_READ_NEXT */
317 if ((err = vx_send_irq_dsp(chip, IRQ_MESS_READ_NEXT)) < 0) {
318 snd_printd(KERN_DEBUG "vx_send_msg: IRQ_READ_NEXT error\n");
319 return err;
322 /* Wait for TX empty */
323 if ((err = vx_wait_isr_bit(chip, ISR_TX_READY)) < 0) {
324 snd_printd(KERN_DEBUG "vx_send_msg: TX_READY error\n");
325 return err;
327 /* End of transfer */
328 err = vx_transfer_end(chip, IRQ_MESS_READ_END);
329 if (err < 0)
330 return err;
333 return vx_read_status(chip, rmh);
338 * vx_send_msg - send a DSP message with spinlock
339 * @rmh: the rmh record to send and receive
341 * returns 0 if successful, or a negative error code.
342 * see vx_send_msg_nolock().
344 int vx_send_msg(struct vx_core *chip, struct vx_rmh *rmh)
346 unsigned long flags;
347 int err;
349 spin_lock_irqsave(&chip->lock, flags);
350 err = vx_send_msg_nolock(chip, rmh);
351 spin_unlock_irqrestore(&chip->lock, flags);
352 return err;
357 * vx_send_rih_nolock - send an RIH to xilinx
358 * @cmd: the command to send
360 * returns 0 if successful, or a negative error code.
361 * the error code can be VX-specific, retrieved via vx_get_error().
363 * this function doesn't call spinlock at all.
365 * unlike RMH, no command is sent to DSP.
367 int vx_send_rih_nolock(struct vx_core *chip, int cmd)
369 int err;
371 if (chip->chip_status & VX_STAT_IS_STALE)
372 return -EBUSY;
374 #if 0
375 printk(KERN_DEBUG "send_rih: cmd = 0x%x\n", cmd);
376 #endif
377 if ((err = vx_reset_chk(chip)) < 0)
378 return err;
379 /* send the IRQ */
380 if ((err = vx_send_irq_dsp(chip, cmd)) < 0)
381 return err;
382 /* Wait CHK = 1 */
383 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
384 return err;
385 /* If error, read RX */
386 if (vx_inb(chip, ISR) & ISR_ERR) {
387 if ((err = vx_wait_for_rx_full(chip)) < 0)
388 return err;
389 err = vx_inb(chip, RXH) << 16;
390 err |= vx_inb(chip, RXM) << 8;
391 err |= vx_inb(chip, RXL);
392 return -(VX_ERR_MASK | err);
394 return 0;
399 * vx_send_rih - send an RIH with spinlock
400 * @cmd: the command to send
402 * see vx_send_rih_nolock().
404 int vx_send_rih(struct vx_core *chip, int cmd)
406 unsigned long flags;
407 int err;
409 spin_lock_irqsave(&chip->lock, flags);
410 err = vx_send_rih_nolock(chip, cmd);
411 spin_unlock_irqrestore(&chip->lock, flags);
412 return err;
415 #define END_OF_RESET_WAIT_TIME 500 /* us */
418 * snd_vx_boot_xilinx - boot up the xilinx interface
419 * @boot: the boot record to load
421 int snd_vx_load_boot_image(struct vx_core *chip, const struct firmware *boot)
423 unsigned int i;
424 int no_fillup = vx_has_new_dsp(chip);
426 /* check the length of boot image */
427 snd_assert(boot->size > 0, return -EINVAL);
428 snd_assert(boot->size % 3 == 0, return -EINVAL);
429 #if 0
431 /* more strict check */
432 unsigned int c = ((u32)boot->data[0] << 16) | ((u32)boot->data[1] << 8) | boot->data[2];
433 snd_assert(boot->size == (c + 2) * 3, return -EINVAL);
435 #endif
437 /* reset dsp */
438 vx_reset_dsp(chip);
440 udelay(END_OF_RESET_WAIT_TIME); /* another wait? */
442 /* download boot strap */
443 for (i = 0; i < 0x600; i += 3) {
444 if (i >= boot->size) {
445 if (no_fillup)
446 break;
447 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) {
448 snd_printk(KERN_ERR "dsp boot failed at %d\n", i);
449 return -EIO;
451 vx_outb(chip, TXH, 0);
452 vx_outb(chip, TXM, 0);
453 vx_outb(chip, TXL, 0);
454 } else {
455 unsigned char *image = boot->data + i;
456 if (vx_wait_isr_bit(chip, ISR_TX_EMPTY) < 0) {
457 snd_printk(KERN_ERR "dsp boot failed at %d\n", i);
458 return -EIO;
460 vx_outb(chip, TXH, image[0]);
461 vx_outb(chip, TXM, image[1]);
462 vx_outb(chip, TXL, image[2]);
465 return 0;
469 * vx_test_irq_src - query the source of interrupts
471 * called from irq handler only
473 static int vx_test_irq_src(struct vx_core *chip, unsigned int *ret)
475 int err;
477 vx_init_rmh(&chip->irq_rmh, CMD_TEST_IT);
478 spin_lock(&chip->lock);
479 err = vx_send_msg_nolock(chip, &chip->irq_rmh);
480 if (err < 0)
481 *ret = 0;
482 else
483 *ret = chip->irq_rmh.Stat[0];
484 spin_unlock(&chip->lock);
485 return err;
490 * vx_interrupt - soft irq handler
492 static void vx_interrupt(unsigned long private_data)
494 struct vx_core *chip = (struct vx_core *) private_data;
495 unsigned int events;
497 if (chip->chip_status & VX_STAT_IS_STALE)
498 return;
500 if (vx_test_irq_src(chip, &events) < 0)
501 return;
503 #if 0
504 if (events & 0x000800)
505 printk(KERN_ERR "DSP Stream underrun ! IRQ events = 0x%x\n", events);
506 #endif
507 // printk(KERN_DEBUG "IRQ events = 0x%x\n", events);
509 /* We must prevent any application using this DSP
510 * and block any further request until the application
511 * either unregisters or reloads the DSP
513 if (events & FATAL_DSP_ERROR) {
514 snd_printk(KERN_ERR "vx_core: fatal DSP error!!\n");
515 return;
518 /* The start on time code conditions are filled (ie the time code
519 * received by the board is equal to one of those given to it).
521 if (events & TIME_CODE_EVENT_PENDING)
522 ; /* so far, nothing to do yet */
524 /* The frequency has changed on the board (UER mode). */
525 if (events & FREQUENCY_CHANGE_EVENT_PENDING)
526 vx_change_frequency(chip);
528 /* update the pcm streams */
529 vx_pcm_update_intr(chip, events);
534 * snd_vx_irq_handler - interrupt handler
536 irqreturn_t snd_vx_irq_handler(int irq, void *dev, struct pt_regs *regs)
538 struct vx_core *chip = dev;
540 if (! (chip->chip_status & VX_STAT_CHIP_INIT) ||
541 (chip->chip_status & VX_STAT_IS_STALE))
542 return IRQ_NONE;
543 if (! vx_test_and_ack(chip))
544 tasklet_hi_schedule(&chip->tq);
545 return IRQ_HANDLED;
551 static void vx_reset_board(struct vx_core *chip, int cold_reset)
553 snd_assert(chip->ops->reset_board, return);
555 /* current source, later sync'ed with target */
556 chip->audio_source = VX_AUDIO_SRC_LINE;
557 if (cold_reset) {
558 chip->audio_source_target = chip->audio_source;
559 chip->clock_source = INTERNAL_QUARTZ;
560 chip->clock_mode = VX_CLOCK_MODE_AUTO;
561 chip->freq = 48000;
562 chip->uer_detected = VX_UER_MODE_NOT_PRESENT;
563 chip->uer_bits = SNDRV_PCM_DEFAULT_CON_SPDIF;
566 chip->ops->reset_board(chip, cold_reset);
568 vx_reset_codec(chip, cold_reset);
570 vx_set_internal_clock(chip, chip->freq);
572 /* Reset the DSP */
573 vx_reset_dsp(chip);
575 if (vx_is_pcmcia(chip)) {
576 /* Acknowledge any pending IRQ and reset the MEMIRQ flag. */
577 vx_test_and_ack(chip);
578 vx_validate_irq(chip, 1);
581 /* init CBits */
582 vx_set_iec958_status(chip, chip->uer_bits);
587 * proc interface
590 static void vx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
592 struct vx_core *chip = entry->private_data;
593 static char *audio_src_vxp[] = { "Line", "Mic", "Digital" };
594 static char *audio_src_vx2[] = { "Analog", "Analog", "Digital" };
595 static char *clock_mode[] = { "Auto", "Internal", "External" };
596 static char *clock_src[] = { "Internal", "External" };
597 static char *uer_type[] = { "Consumer", "Professional", "Not Present" };
599 snd_iprintf(buffer, "%s\n", chip->card->longname);
600 snd_iprintf(buffer, "Xilinx Firmware: %s\n",
601 chip->chip_status & VX_STAT_XILINX_LOADED ? "Loaded" : "No");
602 snd_iprintf(buffer, "Device Initialized: %s\n",
603 chip->chip_status & VX_STAT_DEVICE_INIT ? "Yes" : "No");
604 snd_iprintf(buffer, "DSP audio info:");
605 if (chip->audio_info & VX_AUDIO_INFO_REAL_TIME)
606 snd_iprintf(buffer, " realtime");
607 if (chip->audio_info & VX_AUDIO_INFO_OFFLINE)
608 snd_iprintf(buffer, " offline");
609 if (chip->audio_info & VX_AUDIO_INFO_MPEG1)
610 snd_iprintf(buffer, " mpeg1");
611 if (chip->audio_info & VX_AUDIO_INFO_MPEG2)
612 snd_iprintf(buffer, " mpeg2");
613 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_8)
614 snd_iprintf(buffer, " linear8");
615 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_16)
616 snd_iprintf(buffer, " linear16");
617 if (chip->audio_info & VX_AUDIO_INFO_LINEAR_24)
618 snd_iprintf(buffer, " linear24");
619 snd_iprintf(buffer, "\n");
620 snd_iprintf(buffer, "Input Source: %s\n", vx_is_pcmcia(chip) ?
621 audio_src_vxp[chip->audio_source] :
622 audio_src_vx2[chip->audio_source]);
623 snd_iprintf(buffer, "Clock Mode: %s\n", clock_mode[chip->clock_mode]);
624 snd_iprintf(buffer, "Clock Source: %s\n", clock_src[chip->clock_source]);
625 snd_iprintf(buffer, "Frequency: %d\n", chip->freq);
626 snd_iprintf(buffer, "Detected Frequency: %d\n", chip->freq_detected);
627 snd_iprintf(buffer, "Detected UER type: %s\n", uer_type[chip->uer_detected]);
628 snd_iprintf(buffer, "Min/Max/Cur IBL: %d/%d/%d (granularity=%d)\n",
629 chip->ibl.min_size, chip->ibl.max_size, chip->ibl.size,
630 chip->ibl.granularity);
633 static void vx_proc_init(struct vx_core *chip)
635 struct snd_info_entry *entry;
637 if (! snd_card_proc_new(chip->card, "vx-status", &entry))
638 snd_info_set_text_ops(entry, chip, 1024, vx_proc_read);
643 * snd_vx_dsp_boot - load the DSP boot
645 int snd_vx_dsp_boot(struct vx_core *chip, const struct firmware *boot)
647 int err;
648 int cold_reset = !(chip->chip_status & VX_STAT_DEVICE_INIT);
650 vx_reset_board(chip, cold_reset);
651 vx_validate_irq(chip, 0);
653 if ((err = snd_vx_load_boot_image(chip, boot)) < 0)
654 return err;
655 msleep(10);
657 return 0;
661 * snd_vx_dsp_load - load the DSP image
663 int snd_vx_dsp_load(struct vx_core *chip, const struct firmware *dsp)
665 unsigned int i;
666 int err;
667 unsigned int csum = 0;
668 unsigned char *image, *cptr;
670 snd_assert(dsp->size % 3 == 0, return -EINVAL);
672 vx_toggle_dac_mute(chip, 1);
674 /* Transfert data buffer from PC to DSP */
675 for (i = 0; i < dsp->size; i += 3) {
676 image = dsp->data + i;
677 /* Wait DSP ready for a new read */
678 if ((err = vx_wait_isr_bit(chip, ISR_TX_EMPTY)) < 0) {
679 printk("dsp loading error at position %d\n", i);
680 return err;
682 cptr = image;
683 csum ^= *cptr;
684 csum = (csum >> 24) | (csum << 8);
685 vx_outb(chip, TXH, *cptr++);
686 csum ^= *cptr;
687 csum = (csum >> 24) | (csum << 8);
688 vx_outb(chip, TXM, *cptr++);
689 csum ^= *cptr;
690 csum = (csum >> 24) | (csum << 8);
691 vx_outb(chip, TXL, *cptr++);
693 snd_printdd(KERN_DEBUG "checksum = 0x%08x\n", csum);
695 msleep(200);
697 if ((err = vx_wait_isr_bit(chip, ISR_CHK)) < 0)
698 return err;
700 vx_toggle_dac_mute(chip, 0);
702 vx_test_and_ack(chip);
703 vx_validate_irq(chip, 1);
705 return 0;
708 #ifdef CONFIG_PM
710 * suspend
712 int snd_vx_suspend(struct vx_core *chip, pm_message_t state)
714 unsigned int i;
716 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
717 chip->chip_status |= VX_STAT_IN_SUSPEND;
718 for (i = 0; i < chip->hw->num_codecs; i++)
719 snd_pcm_suspend_all(chip->pcm[i]);
721 return 0;
725 * resume
727 int snd_vx_resume(struct vx_core *chip)
729 int i, err;
731 chip->chip_status &= ~VX_STAT_CHIP_INIT;
733 for (i = 0; i < 4; i++) {
734 if (! chip->firmware[i])
735 continue;
736 err = chip->ops->load_dsp(chip, i, chip->firmware[i]);
737 if (err < 0) {
738 snd_printk(KERN_ERR "vx: firmware resume error at DSP %d\n", i);
739 return -EIO;
743 chip->chip_status |= VX_STAT_CHIP_INIT;
744 chip->chip_status &= ~VX_STAT_IN_SUSPEND;
746 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
747 return 0;
750 #endif
753 * snd_vx_create - constructor for struct vx_core
754 * @hw: hardware specific record
756 * this function allocates the instance and prepare for the hardware
757 * initialization.
759 * return the instance pointer if successful, NULL in error.
761 struct vx_core *snd_vx_create(struct snd_card *card, struct snd_vx_hardware *hw,
762 struct snd_vx_ops *ops,
763 int extra_size)
765 struct vx_core *chip;
767 snd_assert(card && hw && ops, return NULL);
769 chip = kzalloc(sizeof(*chip) + extra_size, GFP_KERNEL);
770 if (! chip) {
771 snd_printk(KERN_ERR "vx_core: no memory\n");
772 return NULL;
774 spin_lock_init(&chip->lock);
775 spin_lock_init(&chip->irq_lock);
776 chip->irq = -1;
777 chip->hw = hw;
778 chip->type = hw->type;
779 chip->ops = ops;
780 tasklet_init(&chip->tq, vx_interrupt, (unsigned long)chip);
781 init_MUTEX(&chip->mixer_mutex);
783 chip->card = card;
784 card->private_data = chip;
785 strcpy(card->driver, hw->name);
786 sprintf(card->shortname, "Digigram %s", hw->name);
788 vx_proc_init(chip);
790 return chip;
794 * module entries
796 static int __init alsa_vx_core_init(void)
798 return 0;
801 static void __exit alsa_vx_core_exit(void)
805 module_init(alsa_vx_core_init)
806 module_exit(alsa_vx_core_exit)
809 * exports
811 EXPORT_SYMBOL(snd_vx_check_reg_bit);
812 EXPORT_SYMBOL(snd_vx_create);
813 EXPORT_SYMBOL(snd_vx_setup_firmware);
814 EXPORT_SYMBOL(snd_vx_free_firmware);
815 EXPORT_SYMBOL(snd_vx_irq_handler);
816 EXPORT_SYMBOL(snd_vx_dsp_boot);
817 EXPORT_SYMBOL(snd_vx_dsp_load);
818 EXPORT_SYMBOL(snd_vx_load_boot_image);
819 #ifdef CONFIG_PM
820 EXPORT_SYMBOL(snd_vx_suspend);
821 EXPORT_SYMBOL(snd_vx_resume);
822 #endif