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[PATCH] w1: hotplug support.
[linux-2.6/verdex.git] / sound / pcmcia / vx / vxp_ops.c
blob6f15c3d03ab5f2972f92af432d31f7d335ba9e21
1 /*
2 * Driver for Digigram VXpocket soundcards
3 *
4 * lowlevel routines for VXpocket soundcards
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
23 #include <sound/driver.h>
24 #include <linux/delay.h>
25 #include <linux/device.h>
26 #include <linux/firmware.h>
27 #include <sound/core.h>
28 #include <asm/io.h>
29 #include "vxpocket.h"
30
31
32 static int vxp_reg_offset[VX_REG_MAX] = {
33 [VX_ICR] = 0x00, // ICR
34 [VX_CVR] = 0x01, // CVR
35 [VX_ISR] = 0x02, // ISR
36 [VX_IVR] = 0x03, // IVR
37 [VX_RXH] = 0x05, // RXH
38 [VX_RXM] = 0x06, // RXM
39 [VX_RXL] = 0x07, // RXL
40 [VX_DMA] = 0x04, // DMA
41 [VX_CDSP] = 0x08, // CDSP
42 [VX_LOFREQ] = 0x09, // LFREQ
43 [VX_HIFREQ] = 0x0a, // HFREQ
44 [VX_DATA] = 0x0b, // DATA
45 [VX_MICRO] = 0x0c, // MICRO
46 [VX_DIALOG] = 0x0d, // DIALOG
47 [VX_CSUER] = 0x0e, // CSUER
48 [VX_RUER] = 0x0f, // RUER
49 };
50
51
52 static inline unsigned long vxp_reg_addr(vx_core_t *_chip, int reg)
53 {
54 struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip;
55 return chip->port + vxp_reg_offset[reg];
56 }
57
58 /*
59 * snd_vx_inb - read a byte from the register
60 * @offset: register offset
61 */
62 static unsigned char vxp_inb(vx_core_t *chip, int offset)
63 {
64 return inb(vxp_reg_addr(chip, offset));
65 }
66
67 /*
68 * snd_vx_outb - write a byte on the register
69 * @offset: the register offset
70 * @val: the value to write
71 */
72 static void vxp_outb(vx_core_t *chip, int offset, unsigned char val)
73 {
74 outb(val, vxp_reg_addr(chip, offset));
75 }
76
77 /*
78 * redefine macros to call directly
79 */
80 #undef vx_inb
81 #define vx_inb(chip,reg) vxp_inb((vx_core_t*)(chip), VX_##reg)
82 #undef vx_outb
83 #define vx_outb(chip,reg,val) vxp_outb((vx_core_t*)(chip), VX_##reg,val)
84
85
86 /*
87 * vx_check_magic - check the magic word on xilinx
88 *
89 * returns zero if a magic word is detected, or a negative error code.
90 */
91 static int vx_check_magic(vx_core_t *chip)
92 {
93 unsigned long end_time = jiffies + HZ / 5;
94 int c;
95 do {
96 c = vx_inb(chip, CDSP);
97 if (c == CDSP_MAGIC)
98 return 0;
99 snd_vx_delay(chip, 10);
100 } while (time_after_eq(end_time, jiffies));
101 snd_printk(KERN_ERR "cannot find xilinx magic word (%x)\n", c);
102 return -EIO;
103 }
104
105
106 /*
107 * vx_reset_dsp - reset the DSP
108 */
109
110 #define XX_DSP_RESET_WAIT_TIME 2 /* ms */
111
112 static void vxp_reset_dsp(vx_core_t *_chip)
113 {
114 struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip;
115
116 /* set the reset dsp bit to 1 */
117 vx_outb(chip, CDSP, chip->regCDSP | VXP_CDSP_DSP_RESET_MASK);
118 vx_inb(chip, CDSP);
119 mdelay(XX_DSP_RESET_WAIT_TIME);
120 /* reset the bit */
121 chip->regCDSP &= ~VXP_CDSP_DSP_RESET_MASK;
122 vx_outb(chip, CDSP, chip->regCDSP);
123 vx_inb(chip, CDSP);
124 mdelay(XX_DSP_RESET_WAIT_TIME);
125 }
126
127 /*
128 * reset codec bit
129 */
130 static void vxp_reset_codec(vx_core_t *_chip)
131 {
132 struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip;
133
134 /* Set the reset CODEC bit to 1. */
135 vx_outb(chip, CDSP, chip->regCDSP | VXP_CDSP_CODEC_RESET_MASK);
136 vx_inb(chip, CDSP);
137 snd_vx_delay(_chip, 10);
138 /* Set the reset CODEC bit to 0. */
139 chip->regCDSP &= ~VXP_CDSP_CODEC_RESET_MASK;
140 vx_outb(chip, CDSP, chip->regCDSP);
141 vx_inb(chip, CDSP);
142 snd_vx_delay(_chip, 1);
143 }
144
145 /*
146 * vx_load_xilinx_binary - load the xilinx binary image
147 * the binary image is the binary array converted from the bitstream file.
148 */
149 static int vxp_load_xilinx_binary(vx_core_t *_chip, const struct firmware *fw)
150 {
151 struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip;
152 unsigned int i;
153 int c;
154 int regCSUER, regRUER;
155 unsigned char *image;
156 unsigned char data;
157
158 /* Switch to programmation mode */
159 chip->regDIALOG |= VXP_DLG_XILINX_REPROG_MASK;
160 vx_outb(chip, DIALOG, chip->regDIALOG);
161
162 /* Save register CSUER and RUER */
163 regCSUER = vx_inb(chip, CSUER);
164 regRUER = vx_inb(chip, RUER);
165
166 /* reset HF0 and HF1 */
167 vx_outb(chip, ICR, 0);
168
169 /* Wait for answer HF2 equal to 1 */
170 snd_printdd(KERN_DEBUG "check ISR_HF2\n");
171 if (vx_check_isr(_chip, ISR_HF2, ISR_HF2, 20) < 0)
172 goto _error;
173
174 /* set HF1 for loading xilinx binary */
175 vx_outb(chip, ICR, ICR_HF1);
176 image = fw->data;
177 for (i = 0; i < fw->size; i++, image++) {
178 data = *image;
179 if (vx_wait_isr_bit(_chip, ISR_TX_EMPTY) < 0)
180 goto _error;
181 vx_outb(chip, TXL, data);
182 /* wait for reading */
183 if (vx_wait_for_rx_full(_chip) < 0)
184 goto _error;
185 c = vx_inb(chip, RXL);
186 if (c != (int)data)
187 snd_printk(KERN_ERR "vxpocket: load xilinx mismatch at %d: 0x%x != 0x%x\n", i, c, (int)data);
188 }
189
190 /* reset HF1 */
191 vx_outb(chip, ICR, 0);
192
193 /* wait for HF3 */
194 if (vx_check_isr(_chip, ISR_HF3, ISR_HF3, 20) < 0)
195 goto _error;
196
197 /* read the number of bytes received */
198 if (vx_wait_for_rx_full(_chip) < 0)
199 goto _error;
200
201 c = (int)vx_inb(chip, RXH) << 16;
202 c |= (int)vx_inb(chip, RXM) << 8;
203 c |= vx_inb(chip, RXL);
204
205 snd_printdd(KERN_DEBUG "xilinx: dsp size received 0x%x, orig 0x%x\n", c, fw->size);
206
207 vx_outb(chip, ICR, ICR_HF0);
208
209 /* TEMPO 250ms : wait until Xilinx is downloaded */
210 snd_vx_delay(_chip, 300);
211
212 /* test magical word */
213 if (vx_check_magic(_chip) < 0)
214 goto _error;
215
216 /* Restore register 0x0E and 0x0F (thus replacing COR and FCSR) */
217 vx_outb(chip, CSUER, regCSUER);
218 vx_outb(chip, RUER, regRUER);
219
220 /* Reset the Xilinx's signal enabling IO access */
221 chip->regDIALOG |= VXP_DLG_XILINX_REPROG_MASK;
222 vx_outb(chip, DIALOG, chip->regDIALOG);
223 vx_inb(chip, DIALOG);
224 snd_vx_delay(_chip, 10);
225 chip->regDIALOG &= ~VXP_DLG_XILINX_REPROG_MASK;
226 vx_outb(chip, DIALOG, chip->regDIALOG);
227 vx_inb(chip, DIALOG);
228
229 /* Reset of the Codec */
230 vxp_reset_codec(_chip);
231 vx_reset_dsp(_chip);
232
233 return 0;
234
235 _error:
236 vx_outb(chip, CSUER, regCSUER);
237 vx_outb(chip, RUER, regRUER);
238 chip->regDIALOG &= ~VXP_DLG_XILINX_REPROG_MASK;
239 vx_outb(chip, DIALOG, chip->regDIALOG);
240 return -EIO;
241 }
242
243
244 /*
245 * vxp_load_dsp - load_dsp callback
246 */
247 static int vxp_load_dsp(vx_core_t *vx, int index, const struct firmware *fw)
248 {
249 int err;
250
251 switch (index) {
252 case 0:
253 /* xilinx boot */
254 if ((err = vx_check_magic(vx)) < 0)
255 return err;
256 if ((err = snd_vx_load_boot_image(vx, fw)) < 0)
257 return err;
258 return 0;
259 case 1:
260 /* xilinx image */
261 return vxp_load_xilinx_binary(vx, fw);
262 case 2:
263 /* DSP boot */
264 return snd_vx_dsp_boot(vx, fw);
265 case 3:
266 /* DSP image */
267 return snd_vx_dsp_load(vx, fw);
268 default:
269 snd_BUG();
270 return -EINVAL;
271 }
272 }
273
274
275 /*
276 * vx_test_and_ack - test and acknowledge interrupt
277 *
278 * called from irq hander, too
279 *
280 * spinlock held!
281 */
282 static int vxp_test_and_ack(vx_core_t *_chip)
283 {
284 struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip;
285
286 /* not booted yet? */
287 if (! (_chip->chip_status & VX_STAT_XILINX_LOADED))
288 return -ENXIO;
289
290 if (! (vx_inb(chip, DIALOG) & VXP_DLG_MEMIRQ_MASK))
291 return -EIO;
292
293 /* ok, interrupts generated, now ack it */
294 /* set ACQUIT bit up and down */
295 vx_outb(chip, DIALOG, chip->regDIALOG | VXP_DLG_ACK_MEMIRQ_MASK);
296 /* useless read just to spend some time and maintain
297 * the ACQUIT signal up for a while ( a bus cycle )
298 */
299 vx_inb(chip, DIALOG);
300 vx_outb(chip, DIALOG, chip->regDIALOG & ~VXP_DLG_ACK_MEMIRQ_MASK);
301
302 return 0;
303 }
304
305
306 /*
307 * vx_validate_irq - enable/disable IRQ
308 */
309 static void vxp_validate_irq(vx_core_t *_chip, int enable)
310 {
311 struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip;
312
313 /* Set the interrupt enable bit to 1 in CDSP register */
314 if (enable)
315 chip->regCDSP |= VXP_CDSP_VALID_IRQ_MASK;
316 else
317 chip->regCDSP &= ~VXP_CDSP_VALID_IRQ_MASK;
318 vx_outb(chip, CDSP, chip->regCDSP);
319 }
320
321 /*
322 * vx_setup_pseudo_dma - set up the pseudo dma read/write mode.
323 * @do_write: 0 = read, 1 = set up for DMA write
324 */
325 static void vx_setup_pseudo_dma(vx_core_t *_chip, int do_write)
326 {
327 struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip;
328
329 /* Interrupt mode and HREQ pin enabled for host transmit / receive data transfers */
330 vx_outb(chip, ICR, do_write ? ICR_TREQ : ICR_RREQ);
331 /* Reset the pseudo-dma register */
332 vx_inb(chip, ISR);
333 vx_outb(chip, ISR, 0);
334
335 /* Select DMA in read/write transfer mode and in 16-bit accesses */
336 chip->regDIALOG |= VXP_DLG_DMA16_SEL_MASK;
337 chip->regDIALOG |= do_write ? VXP_DLG_DMAWRITE_SEL_MASK : VXP_DLG_DMAREAD_SEL_MASK;
338 vx_outb(chip, DIALOG, chip->regDIALOG);
339
340 }
341
342 /*
343 * vx_release_pseudo_dma - disable the pseudo-DMA mode
344 */
345 static void vx_release_pseudo_dma(vx_core_t *_chip)
346 {
347 struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip;
348
349 /* Disable DMA and 16-bit accesses */
350 chip->regDIALOG &= ~(VXP_DLG_DMAWRITE_SEL_MASK|
351 VXP_DLG_DMAREAD_SEL_MASK|
352 VXP_DLG_DMA16_SEL_MASK);
353 vx_outb(chip, DIALOG, chip->regDIALOG);
354 /* HREQ pin disabled. */
355 vx_outb(chip, ICR, 0);
356 }
357
358 /*
359 * vx_pseudo_dma_write - write bulk data on pseudo-DMA mode
360 * @count: data length to transfer in bytes
361 *
362 * data size must be aligned to 6 bytes to ensure the 24bit alignment on DSP.
363 * NB: call with a certain lock!
364 */
365 static void vxp_dma_write(vx_core_t *chip, snd_pcm_runtime_t *runtime,
366 vx_pipe_t *pipe, int count)
367 {
368 long port = vxp_reg_addr(chip, VX_DMA);
369 int offset = pipe->hw_ptr;
370 unsigned short *addr = (unsigned short *)(runtime->dma_area + offset);
371
372 vx_setup_pseudo_dma(chip, 1);
373 if (offset + count > pipe->buffer_bytes) {
374 int length = pipe->buffer_bytes - offset;
375 count -= length;
376 length >>= 1; /* in 16bit words */
377 /* Transfer using pseudo-dma. */
378 while (length-- > 0) {
379 outw(cpu_to_le16(*addr), port);
380 addr++;
381 }
382 addr = (unsigned short *)runtime->dma_area;
383 pipe->hw_ptr = 0;
384 }
385 pipe->hw_ptr += count;
386 count >>= 1; /* in 16bit words */
387 /* Transfer using pseudo-dma. */
388 while (count-- > 0) {
389 outw(cpu_to_le16(*addr), port);
390 addr++;
391 }
392 vx_release_pseudo_dma(chip);
393 }
394
395
396 /*
397 * vx_pseudo_dma_read - read bulk data on pseudo DMA mode
398 * @offset: buffer offset in bytes
399 * @count: data length to transfer in bytes
400 *
401 * the read length must be aligned to 6 bytes, as well as write.
402 * NB: call with a certain lock!
403 */
404 static void vxp_dma_read(vx_core_t *chip, snd_pcm_runtime_t *runtime,
405 vx_pipe_t *pipe, int count)
406 {
407 struct snd_vxpocket *pchip = (struct snd_vxpocket *)chip;
408 long port = vxp_reg_addr(chip, VX_DMA);
409 int offset = pipe->hw_ptr;
410 unsigned short *addr = (unsigned short *)(runtime->dma_area + offset);
411
412 snd_assert(count % 2 == 0, return);
413 vx_setup_pseudo_dma(chip, 0);
414 if (offset + count > pipe->buffer_bytes) {
415 int length = pipe->buffer_bytes - offset;
416 count -= length;
417 length >>= 1; /* in 16bit words */
418 /* Transfer using pseudo-dma. */
419 while (length-- > 0)
420 *addr++ = le16_to_cpu(inw(port));
421 addr = (unsigned short *)runtime->dma_area;
422 pipe->hw_ptr = 0;
423 }
424 pipe->hw_ptr += count;
425 count >>= 1; /* in 16bit words */
426 /* Transfer using pseudo-dma. */
427 while (count-- > 1)
428 *addr++ = le16_to_cpu(inw(port));
429 /* Disable DMA */
430 pchip->regDIALOG &= ~VXP_DLG_DMAREAD_SEL_MASK;
431 vx_outb(chip, DIALOG, pchip->regDIALOG);
432 /* Read the last word (16 bits) */
433 *addr = le16_to_cpu(inw(port));
434 /* Disable 16-bit accesses */
435 pchip->regDIALOG &= ~VXP_DLG_DMA16_SEL_MASK;
436 vx_outb(chip, DIALOG, pchip->regDIALOG);
437 /* HREQ pin disabled. */
438 vx_outb(chip, ICR, 0);
439 }
440
441
442 /*
443 * write a codec data (24bit)
444 */
445 static void vxp_write_codec_reg(vx_core_t *chip, int codec, unsigned int data)
446 {
447 int i;
448
449 /* Activate access to the corresponding codec register */
450 if (! codec)
451 vx_inb(chip, LOFREQ);
452 else
453 vx_inb(chip, CODEC2);
454
455 /* We have to send 24 bits (3 x 8 bits). Start with most signif. Bit */
456 for (i = 0; i < 24; i++, data <<= 1)
457 vx_outb(chip, DATA, ((data & 0x800000) ? VX_DATA_CODEC_MASK : 0));
458
459 /* Terminate access to codec registers */
460 vx_inb(chip, HIFREQ);
461 }
462
463
464 /*
465 * vx_set_mic_boost - set mic boost level (on vxp440 only)
466 * @boost: 0 = 20dB, 1 = +38dB
467 */
468 void vx_set_mic_boost(vx_core_t *chip, int boost)
469 {
470 struct snd_vxpocket *pchip = (struct snd_vxpocket *)chip;
471 unsigned long flags;
472
473 if (chip->chip_status & VX_STAT_IS_STALE)
474 return;
475
476 spin_lock_irqsave(&chip->lock, flags);
477 if (pchip->regCDSP & P24_CDSP_MICS_SEL_MASK) {
478 if (boost) {
479 /* boost: 38 dB */
480 pchip->regCDSP &= ~P24_CDSP_MIC20_SEL_MASK;
481 pchip->regCDSP |= P24_CDSP_MIC38_SEL_MASK;
482 } else {
483 /* minimum value: 20 dB */
484 pchip->regCDSP |= P24_CDSP_MIC20_SEL_MASK;
485 pchip->regCDSP &= ~P24_CDSP_MIC38_SEL_MASK;
486 }
487 vx_outb(chip, CDSP, pchip->regCDSP);
488 }
489 spin_unlock_irqrestore(&chip->lock, flags);
490 }
491
492 /*
493 * remap the linear value (0-8) to the actual value (0-15)
494 */
495 static int vx_compute_mic_level(int level)
496 {
497 switch (level) {
498 case 5: level = 6 ; break;
499 case 6: level = 8 ; break;
500 case 7: level = 11; break;
501 case 8: level = 15; break;
502 default: break ;
503 }
504 return level;
505 }
506
507 /*
508 * vx_set_mic_level - set mic level (on vxpocket only)
509 * @level: the mic level = 0 - 8 (max)
510 */
511 void vx_set_mic_level(vx_core_t *chip, int level)
512 {
513 struct snd_vxpocket *pchip = (struct snd_vxpocket *)chip;
514 unsigned long flags;
515
516 if (chip->chip_status & VX_STAT_IS_STALE)
517 return;
518
519 spin_lock_irqsave(&chip->lock, flags);
520 if (pchip->regCDSP & VXP_CDSP_MIC_SEL_MASK) {
521 level = vx_compute_mic_level(level);
522 vx_outb(chip, MICRO, level);
523 }
524 spin_unlock_irqrestore(&chip->lock, flags);
525 }
526
527
528 /*
529 * change the input audio source
530 */
531 static void vxp_change_audio_source(vx_core_t *_chip, int src)
532 {
533 struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip;
534
535 switch (src) {
536 case VX_AUDIO_SRC_DIGITAL:
537 chip->regCDSP |= VXP_CDSP_DATAIN_SEL_MASK;
538 vx_outb(chip, CDSP, chip->regCDSP);
539 break;
540 case VX_AUDIO_SRC_LINE:
541 chip->regCDSP &= ~VXP_CDSP_DATAIN_SEL_MASK;
542 if (_chip->type == VX_TYPE_VXP440)
543 chip->regCDSP &= ~P24_CDSP_MICS_SEL_MASK;
544 else
545 chip->regCDSP &= ~VXP_CDSP_MIC_SEL_MASK;
546 vx_outb(chip, CDSP, chip->regCDSP);
547 break;
548 case VX_AUDIO_SRC_MIC:
549 chip->regCDSP &= ~VXP_CDSP_DATAIN_SEL_MASK;
550 /* reset mic levels */
551 if (_chip->type == VX_TYPE_VXP440) {
552 chip->regCDSP &= ~P24_CDSP_MICS_SEL_MASK;
553 if (chip->mic_level)
554 chip->regCDSP |= P24_CDSP_MIC38_SEL_MASK;
555 else
556 chip->regCDSP |= P24_CDSP_MIC20_SEL_MASK;
557 vx_outb(chip, CDSP, chip->regCDSP);
558 } else {
559 chip->regCDSP |= VXP_CDSP_MIC_SEL_MASK;
560 vx_outb(chip, CDSP, chip->regCDSP);
561 vx_outb(chip, MICRO, vx_compute_mic_level(chip->mic_level));
562 }
563 break;
564 }
565 }
566
567 /*
568 * change the clock source
569 * source = INTERNAL_QUARTZ or UER_SYNC
570 */
571 static void vxp_set_clock_source(vx_core_t *_chip, int source)
572 {
573 struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip;
574
575 if (source == INTERNAL_QUARTZ)
576 chip->regCDSP &= ~VXP_CDSP_CLOCKIN_SEL_MASK;
577 else
578 chip->regCDSP |= VXP_CDSP_CLOCKIN_SEL_MASK;
579 vx_outb(chip, CDSP, chip->regCDSP);
580 }
581
582
583 /*
584 * reset the board
585 */
586 static void vxp_reset_board(vx_core_t *_chip, int cold_reset)
587 {
588 struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip;
589
590 chip->regCDSP = 0;
591 chip->regDIALOG = 0;
592 }
593
594
595 /*
596 * callbacks
597 */
598 /* exported */
599 struct snd_vx_ops snd_vxpocket_ops = {
600 .in8 = vxp_inb,
601 .out8 = vxp_outb,
602 .test_and_ack = vxp_test_and_ack,
603 .validate_irq = vxp_validate_irq,
604 .write_codec = vxp_write_codec_reg,
605 .reset_codec = vxp_reset_codec,
606 .change_audio_source = vxp_change_audio_source,
607 .set_clock_source = vxp_set_clock_source,
608 .load_dsp = vxp_load_dsp,
609 .add_controls = vxp_add_mic_controls,
610 .reset_dsp = vxp_reset_dsp,
611 .reset_board = vxp_reset_board,
612 .dma_write = vxp_dma_write,
613 .dma_read = vxp_dma_read,
614 };
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