2 * Driver for Philips UDA1341TS on Compaq iPAQ H3600 soundcard
3 * Copyright (C) 2002 Tomas Kasparek <tomas.kasparek@seznam.cz>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License.
10 * 2002-03-13 Tomas Kasparek initial release - based on h3600-uda1341.c from OSS
11 * 2002-03-20 Tomas Kasparek playback over ALSA is working
12 * 2002-03-28 Tomas Kasparek playback over OSS emulation is working
13 * 2002-03-29 Tomas Kasparek basic capture is working (native ALSA)
14 * 2002-03-29 Tomas Kasparek capture is working (OSS emulation)
15 * 2002-04-04 Tomas Kasparek better rates handling (allow non-standard rates)
16 * 2003-02-14 Brian Avery fixed full duplex mode, other updates
17 * 2003-02-20 Tomas Kasparek merged updates by Brian (except HAL)
18 * 2003-04-19 Jaroslav Kysela recoded DMA stuff to follow 2.4.18rmk3-hh24 kernel
19 * working suspend and resume
20 * 2003-04-28 Tomas Kasparek updated work by Jaroslav to compile it under 2.5.x again
21 * merged HAL layer (patches from Brian)
24 /* $Id: sa11xx-uda1341.c,v 1.24 2005/11/17 10:25:22 tiwai Exp $ */
26 /***************************************************************************************************
28 * To understand what Alsa Drivers should be doing look at "Writing an Alsa Driver" by Takashi Iwai
29 * available in the Alsa doc section on the website
31 * A few notes to make things clearer. The UDA1341 is hooked up to Serial port 4 on the SA1100.
32 * We are using SSP mode to talk to the UDA1341. The UDA1341 bit & wordselect clocks are generated
33 * by this UART. Unfortunately, the clock only runs if the transmit buffer has something in it.
34 * So, if we are just recording, we feed the transmit DMA stream a bunch of 0x0000 so that the
35 * transmit buffer is full and the clock keeps going. The zeroes come from FLUSH_BASE_PHYS which
36 * is a mem loc that always decodes to 0's w/ no off chip access.
38 * Some alsa terminology:
39 * frame => num_channels * sample_size e.g stereo 16 bit is 2 * 16 = 32 bytes
40 * period => the least number of bytes that will generate an interrupt e.g. we have a 1024 byte
41 * buffer and 4 periods in the runtime structure this means we'll get an int every 256
42 * bytes or 4 times per buffer.
43 * A number of the sizes are in frames rather than bytes, use frames_to_bytes and
44 * bytes_to_frames to convert. The easiest way to tell the units is to look at the
45 * type i.e. runtime-> buffer_size is in frames and its type is snd_pcm_uframes_t
47 * Notes about the pointer fxn:
48 * The pointer fxn needs to return the offset into the dma buffer in frames.
49 * Interrupts must be blocked before calling the dma_get_pos fxn to avoid race with interrupts.
51 * Notes about pause/resume
52 * Implementing this would be complicated so it's skipped. The problem case is:
53 * A full duplex connection is going, then play is paused. At this point you need to start xmitting
54 * 0's to keep the record active which means you cant just freeze the dma and resume it later you'd
55 * need to save off the dma info, and restore it properly on a resume. Yeach!
57 * Notes about transfer methods:
58 * The async write calls fail. I probably need to implement something else to support them?
60 ***************************************************************************************************/
62 #include <linux/config.h>
63 #include <sound/driver.h>
64 #include <linux/module.h>
65 #include <linux/moduleparam.h>
66 #include <linux/init.h>
67 #include <linux/errno.h>
68 #include <linux/ioctl.h>
69 #include <linux/delay.h>
70 #include <linux/slab.h>
76 #include <asm/hardware.h>
77 #include <asm/arch/h3600.h>
78 #include <asm/mach-types.h>
81 #ifdef CONFIG_H3600_HAL
82 #include <asm/semaphore.h>
83 #include <asm/uaccess.h>
84 #include <asm/arch/h3600_hal.h>
87 #include <sound/core.h>
88 #include <sound/pcm.h>
89 #include <sound/initval.h>
91 #include <linux/l3/l3.h>
94 #undef DEBUG_FUNCTION_NAMES
95 #include <sound/uda1341.h>
98 * FIXME: Is this enough as autodetection of 2.4.X-rmkY-hhZ kernels?
99 * We use DMA stuff from 2.4.18-rmk3-hh24 here to be able to compile this
100 * module for Familiar 0.6.1
102 #ifdef CONFIG_H3600_HAL
106 /* {{{ Type definitions */
108 MODULE_AUTHOR("Tomas Kasparek <tomas.kasparek@seznam.cz>");
109 MODULE_LICENSE("GPL");
110 MODULE_DESCRIPTION("SA1100/SA1111 + UDA1341TS driver for ALSA");
111 MODULE_SUPPORTED_DEVICE("{{UDA1341,iPAQ H3600 UDA1341TS}}");
113 static char *id = NULL; /* ID for this card */
115 module_param(id, charp, 0444);
116 MODULE_PARM_DESC(id, "ID string for SA1100/SA1111 + UDA1341TS soundcard.");
118 typedef struct audio_stream {
119 char *id; /* identification string */
120 int stream_id; /* numeric identification */
121 dma_device_t dma_dev; /* device identifier for DMA */
123 dmach_t dmach; /* dma channel identification */
125 dma_regs_t *dma_regs; /* points to our DMA registers */
127 int active:1; /* we are using this stream for transfer now */
128 int period; /* current transfer period */
129 int periods; /* current count of periods registerd in the DMA engine */
130 int tx_spin; /* are we recoding - flag used to do DMA trans. for sync */
131 unsigned int old_offset;
132 spinlock_t dma_lock; /* for locking in DMA operations (see dma-sa1100.c in the kernel) */
133 snd_pcm_substream_t *stream;
136 typedef struct snd_card_sa11xx_uda1341 {
138 struct l3_client *uda1341;
141 audio_stream_t s[2]; /* playback & capture */
144 static unsigned int rates[] = {
145 8000, 10666, 10985, 14647,
146 16000, 21970, 22050, 24000,
147 29400, 32000, 44100, 48000,
150 static snd_pcm_hw_constraint_list_t hw_constraints_rates = {
151 .count = ARRAY_SIZE(rates),
158 /* {{{ Clock and sample rate stuff */
161 * Stop-gap solution until rest of hh.org HAL stuff is merged.
163 #define GPIO_H3600_CLK_SET0 GPIO_GPIO (12)
164 #define GPIO_H3600_CLK_SET1 GPIO_GPIO (13)
166 #ifdef CONFIG_SA1100_H3XXX
167 #define clr_sa11xx_uda1341_egpio(x) clr_h3600_egpio(x)
168 #define set_sa11xx_uda1341_egpio(x) set_h3600_egpio(x)
170 #error This driver could serve H3x00 handhelds only!
173 static void sa11xx_uda1341_set_audio_clock(long val)
176 case 24000: case 32000: case 48000: /* 00: 12.288 MHz */
177 GPCR = GPIO_H3600_CLK_SET0 | GPIO_H3600_CLK_SET1;
180 case 22050: case 29400: case 44100: /* 01: 11.2896 MHz */
181 GPSR = GPIO_H3600_CLK_SET0;
182 GPCR = GPIO_H3600_CLK_SET1;
185 case 8000: case 10666: case 16000: /* 10: 4.096 MHz */
186 GPCR = GPIO_H3600_CLK_SET0;
187 GPSR = GPIO_H3600_CLK_SET1;
190 case 10985: case 14647: case 21970: /* 11: 5.6245 MHz */
191 GPSR = GPIO_H3600_CLK_SET0 | GPIO_H3600_CLK_SET1;
196 static void sa11xx_uda1341_set_samplerate(sa11xx_uda1341_t *sa11xx_uda1341, long rate)
201 /* We don't want to mess with clocks when frames are in flight */
202 Ser4SSCR0 &= ~SSCR0_SSE;
203 /* wait for any frame to complete */
207 * We have the following clock sources:
208 * 4.096 MHz, 5.6245 MHz, 11.2896 MHz, 12.288 MHz
209 * Those can be divided either by 256, 384 or 512.
210 * This makes up 12 combinations for the following samplerates...
214 else if (rate >= 44100)
216 else if (rate >= 32000)
218 else if (rate >= 29400)
220 else if (rate >= 24000)
222 else if (rate >= 22050)
224 else if (rate >= 21970)
226 else if (rate >= 16000)
228 else if (rate >= 14647)
230 else if (rate >= 10985)
232 else if (rate >= 10666)
237 /* Set the external clock generator */
238 #ifdef CONFIG_H3600_HAL
239 h3600_audio_clock(rate);
241 sa11xx_uda1341_set_audio_clock(rate);
244 /* Select the clock divisor */
251 clk_div = SSCR0_SerClkDiv(16);
258 clk_div = SSCR0_SerClkDiv(8);
265 clk_div = SSCR0_SerClkDiv(12);
269 /* FMT setting should be moved away when other FMTs are added (FIXME) */
270 l3_command(sa11xx_uda1341->uda1341, CMD_FORMAT, (void *)LSB16);
272 l3_command(sa11xx_uda1341->uda1341, CMD_FS, (void *)clk);
273 Ser4SSCR0 = (Ser4SSCR0 & ~0xff00) + clk_div + SSCR0_SSE;
274 sa11xx_uda1341->samplerate = rate;
279 /* {{{ HW init and shutdown */
281 static void sa11xx_uda1341_audio_init(sa11xx_uda1341_t *sa11xx_uda1341)
285 /* Setup DMA stuff */
286 sa11xx_uda1341->s[SNDRV_PCM_STREAM_PLAYBACK].id = "UDA1341 out";
287 sa11xx_uda1341->s[SNDRV_PCM_STREAM_PLAYBACK].stream_id = SNDRV_PCM_STREAM_PLAYBACK;
288 sa11xx_uda1341->s[SNDRV_PCM_STREAM_PLAYBACK].dma_dev = DMA_Ser4SSPWr;
290 sa11xx_uda1341->s[SNDRV_PCM_STREAM_CAPTURE].id = "UDA1341 in";
291 sa11xx_uda1341->s[SNDRV_PCM_STREAM_CAPTURE].stream_id = SNDRV_PCM_STREAM_CAPTURE;
292 sa11xx_uda1341->s[SNDRV_PCM_STREAM_CAPTURE].dma_dev = DMA_Ser4SSPRd;
294 /* Initialize the UDA1341 internal state */
296 /* Setup the uarts */
297 local_irq_save(flags);
298 GAFR |= (GPIO_SSP_CLK);
299 GPDR &= ~(GPIO_SSP_CLK);
301 Ser4SSCR0 = SSCR0_DataSize(16) + SSCR0_TI + SSCR0_SerClkDiv(8);
302 Ser4SSCR1 = SSCR1_SClkIactL + SSCR1_SClk1P + SSCR1_ExtClk;
303 Ser4SSCR0 |= SSCR0_SSE;
304 local_irq_restore(flags);
306 /* Enable the audio power */
307 #ifdef CONFIG_H3600_HAL
308 h3600_audio_power(AUDIO_RATE_DEFAULT);
310 clr_sa11xx_uda1341_egpio(IPAQ_EGPIO_CODEC_NRESET);
311 set_sa11xx_uda1341_egpio(IPAQ_EGPIO_AUDIO_ON);
312 set_sa11xx_uda1341_egpio(IPAQ_EGPIO_QMUTE);
315 /* Wait for the UDA1341 to wake up */
316 mdelay(1); //FIXME - was removed by Perex - Why?
318 /* Initialize the UDA1341 internal state */
319 l3_open(sa11xx_uda1341->uda1341);
321 /* external clock configuration (after l3_open - regs must be initialized */
322 sa11xx_uda1341_set_samplerate(sa11xx_uda1341, sa11xx_uda1341->samplerate);
324 /* Wait for the UDA1341 to wake up */
325 set_sa11xx_uda1341_egpio(IPAQ_EGPIO_CODEC_NRESET);
328 /* make the left and right channels unswapped (flip the WS latch) */
331 #ifdef CONFIG_H3600_HAL
334 clr_sa11xx_uda1341_egpio(IPAQ_EGPIO_QMUTE);
338 static void sa11xx_uda1341_audio_shutdown(sa11xx_uda1341_t *sa11xx_uda1341)
341 #ifdef CONFIG_H3600_HAL
344 set_sa11xx_uda1341_egpio(IPAQ_EGPIO_QMUTE);
347 /* disable the audio power and all signals leading to the audio chip */
348 l3_close(sa11xx_uda1341->uda1341);
350 clr_sa11xx_uda1341_egpio(IPAQ_EGPIO_CODEC_NRESET);
352 /* power off and mute off */
353 /* FIXME - is muting off necesary??? */
354 #ifdef CONFIG_H3600_HAL
355 h3600_audio_power(0);
358 clr_sa11xx_uda1341_egpio(IPAQ_EGPIO_AUDIO_ON);
359 clr_sa11xx_uda1341_egpio(IPAQ_EGPIO_QMUTE);
368 * these are the address and sizes used to fill the xmit buffer
369 * so we can get a clock in record only mode
371 #define FORCE_CLOCK_ADDR (dma_addr_t)FLUSH_BASE_PHYS
372 #define FORCE_CLOCK_SIZE 4096 // was 2048
374 // FIXME Why this value exactly - wrote comment
375 #define DMA_BUF_SIZE 8176 /* <= MAX_DMA_SIZE from asm/arch-sa1100/dma.h */
379 static int audio_dma_request(audio_stream_t *s, void (*callback)(void *, int))
383 ret = sa1100_request_dma(&s->dmach, s->id, s->dma_dev);
385 printk(KERN_ERR "unable to grab audio dma 0x%x\n", s->dma_dev);
388 sa1100_dma_set_callback(s->dmach, callback);
392 static inline void audio_dma_free(audio_stream_t *s)
394 sa1100_free_dma(s->dmach);
400 static int audio_dma_request(audio_stream_t *s, void (*callback)(void *))
404 ret = sa1100_request_dma(s->dma_dev, s->id, callback, s, &s->dma_regs);
406 printk(KERN_ERR "unable to grab audio dma 0x%x\n", s->dma_dev);
410 static void audio_dma_free(audio_stream_t *s)
412 sa1100_free_dma(s->dma_regs);
418 static u_int audio_get_dma_pos(audio_stream_t *s)
420 snd_pcm_substream_t * substream = s->stream;
421 snd_pcm_runtime_t *runtime = substream->runtime;
426 // this must be called w/ interrupts locked out see dma-sa1100.c in the kernel
427 spin_lock_irqsave(&s->dma_lock, flags);
429 sa1100_dma_get_current(s->dmach, NULL, &addr);
431 addr = sa1100_get_dma_pos((s)->dma_regs);
433 offset = addr - runtime->dma_addr;
434 spin_unlock_irqrestore(&s->dma_lock, flags);
436 offset = bytes_to_frames(runtime,offset);
437 if (offset >= runtime->buffer_size)
444 * this stops the dma and clears the dma ptrs
446 static void audio_stop_dma(audio_stream_t *s)
450 spin_lock_irqsave(&s->dma_lock, flags);
453 /* this stops the dma channel and clears the buffer ptrs */
455 sa1100_dma_flush_all(s->dmach);
457 sa1100_clear_dma(s->dma_regs);
459 spin_unlock_irqrestore(&s->dma_lock, flags);
462 static void audio_process_dma(audio_stream_t *s)
464 snd_pcm_substream_t *substream = s->stream;
465 snd_pcm_runtime_t *runtime;
466 unsigned int dma_size;
470 /* we are requested to process synchronization DMA transfer */
472 snd_assert(s->stream_id == SNDRV_PCM_STREAM_PLAYBACK, return);
473 /* fill the xmit dma buffers and return */
475 sa1100_dma_set_spin(s->dmach, FORCE_CLOCK_ADDR, FORCE_CLOCK_SIZE);
478 ret = sa1100_start_dma(s->dma_regs, FORCE_CLOCK_ADDR, FORCE_CLOCK_SIZE);
486 /* must be set here - only valid for running streams, not for forced_clock dma fills */
487 runtime = substream->runtime;
488 while (s->active && s->periods < runtime->periods) {
489 dma_size = frames_to_bytes(runtime, runtime->period_size);
491 /* a little trick, we need resume from old position */
492 offset = frames_to_bytes(runtime, s->old_offset - 1);
495 s->period = offset / dma_size;
497 dma_size = dma_size - offset;
499 continue; /* special case */
501 offset = dma_size * s->period;
502 snd_assert(dma_size <= DMA_BUF_SIZE, );
505 ret = sa1100_dma_queue_buffer(s->dmach, s, runtime->dma_addr + offset, dma_size);
509 ret = sa1100_start_dma((s)->dma_regs, runtime->dma_addr + offset, dma_size);
511 printk(KERN_ERR "audio_process_dma: cannot queue DMA buffer (%i)\n", ret);
517 s->period %= runtime->periods;
523 static void audio_dma_callback(void *data, int size)
525 static void audio_dma_callback(void *data)
528 audio_stream_t *s = data;
531 * If we are getting a callback for an active stream then we inform
532 * the PCM middle layer we've finished a period
535 snd_pcm_period_elapsed(s->stream);
537 spin_lock(&s->dma_lock);
538 if (!s->tx_spin && s->periods > 0)
540 audio_process_dma(s);
541 spin_unlock(&s->dma_lock);
546 /* {{{ PCM setting */
548 /* {{{ trigger & timer */
550 static int snd_sa11xx_uda1341_trigger(snd_pcm_substream_t * substream, int cmd)
552 sa11xx_uda1341_t *chip = snd_pcm_substream_chip(substream);
553 int stream_id = substream->pstr->stream;
554 audio_stream_t *s = &chip->s[stream_id];
555 audio_stream_t *s1 = &chip->s[stream_id ^ 1];
558 /* note local interrupts are already disabled in the midlevel code */
559 spin_lock(&s->dma_lock);
561 case SNDRV_PCM_TRIGGER_START:
562 /* now we need to make sure a record only stream has a clock */
563 if (stream_id == SNDRV_PCM_STREAM_CAPTURE && !s1->active) {
564 /* we need to force fill the xmit DMA with zeros */
566 audio_process_dma(s1);
568 /* this case is when you were recording then you turn on a
569 * playback stream so we stop (also clears it) the dma first,
570 * clear the sync flag and then we let it turned on
576 /* requested stream startup */
578 audio_process_dma(s);
580 case SNDRV_PCM_TRIGGER_STOP:
581 /* requested stream shutdown */
585 * now we need to make sure a record only stream has a clock
586 * so if we're stopping a playback with an active capture
587 * we need to turn the 0 fill dma on for the xmit side
589 if (stream_id == SNDRV_PCM_STREAM_PLAYBACK && s1->active) {
590 /* we need to force fill the xmit DMA with zeros */
592 audio_process_dma(s);
595 * we killed a capture only stream, so we should also kill
596 * the zero fill transmit
606 case SNDRV_PCM_TRIGGER_SUSPEND:
609 sa1100_dma_stop(s->dmach);
613 s->old_offset = audio_get_dma_pos(s) + 1;
615 sa1100_dma_flush_all(s->dmach);
621 case SNDRV_PCM_TRIGGER_RESUME:
624 audio_process_dma(s);
625 if (stream_id == SNDRV_PCM_STREAM_CAPTURE && !s1->active) {
627 audio_process_dma(s1);
630 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
632 sa1100_dma_stop(s->dmach);
637 if (stream_id == SNDRV_PCM_STREAM_PLAYBACK) {
640 s->old_offset = audio_get_dma_pos(s) + 1;
642 sa1100_dma_flush_all(s->dmach);
646 audio_process_dma(s);
652 sa1100_dma_flush_all(s1->dmach);
659 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
663 audio_process_dma(s);
666 if (stream_id == SNDRV_PCM_STREAM_CAPTURE && !s1->active) {
668 audio_process_dma(s1);
671 sa1100_dma_resume(s->dmach);
680 spin_unlock(&s->dma_lock);
684 static int snd_sa11xx_uda1341_prepare(snd_pcm_substream_t * substream)
686 sa11xx_uda1341_t *chip = snd_pcm_substream_chip(substream);
687 snd_pcm_runtime_t *runtime = substream->runtime;
688 audio_stream_t *s = &chip->s[substream->pstr->stream];
690 /* set requested samplerate */
691 sa11xx_uda1341_set_samplerate(chip, runtime->rate);
693 /* set requestd format when available */
694 /* set FMT here !!! FIXME */
702 static snd_pcm_uframes_t snd_sa11xx_uda1341_pointer(snd_pcm_substream_t * substream)
704 sa11xx_uda1341_t *chip = snd_pcm_substream_chip(substream);
705 return audio_get_dma_pos(&chip->s[substream->pstr->stream]);
710 static snd_pcm_hardware_t snd_sa11xx_uda1341_capture =
712 .info = (SNDRV_PCM_INFO_INTERLEAVED |
713 SNDRV_PCM_INFO_BLOCK_TRANSFER |
714 SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
715 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME),
716 .formats = SNDRV_PCM_FMTBIT_S16_LE,
717 .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |\
718 SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 |\
719 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
720 SNDRV_PCM_RATE_KNOT),
725 .buffer_bytes_max = 64*1024,
726 .period_bytes_min = 64,
727 .period_bytes_max = DMA_BUF_SIZE,
733 static snd_pcm_hardware_t snd_sa11xx_uda1341_playback =
735 .info = (SNDRV_PCM_INFO_INTERLEAVED |
736 SNDRV_PCM_INFO_BLOCK_TRANSFER |
737 SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
738 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME),
739 .formats = SNDRV_PCM_FMTBIT_S16_LE,
740 .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |\
741 SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 |\
742 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
743 SNDRV_PCM_RATE_KNOT),
748 .buffer_bytes_max = 64*1024,
749 .period_bytes_min = 64,
750 .period_bytes_max = DMA_BUF_SIZE,
756 static int snd_card_sa11xx_uda1341_open(snd_pcm_substream_t * substream)
758 sa11xx_uda1341_t *chip = snd_pcm_substream_chip(substream);
759 snd_pcm_runtime_t *runtime = substream->runtime;
760 int stream_id = substream->pstr->stream;
763 chip->s[stream_id].stream = substream;
765 if (stream_id == SNDRV_PCM_STREAM_PLAYBACK)
766 runtime->hw = snd_sa11xx_uda1341_playback;
768 runtime->hw = snd_sa11xx_uda1341_capture;
769 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
771 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates)) < 0)
777 static int snd_card_sa11xx_uda1341_close(snd_pcm_substream_t * substream)
779 sa11xx_uda1341_t *chip = snd_pcm_substream_chip(substream);
781 chip->s[substream->pstr->stream].stream = NULL;
785 /* {{{ HW params & free */
787 static int snd_sa11xx_uda1341_hw_params(snd_pcm_substream_t * substream,
788 snd_pcm_hw_params_t * hw_params)
791 return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
794 static int snd_sa11xx_uda1341_hw_free(snd_pcm_substream_t * substream)
796 return snd_pcm_lib_free_pages(substream);
801 static snd_pcm_ops_t snd_card_sa11xx_uda1341_playback_ops = {
802 .open = snd_card_sa11xx_uda1341_open,
803 .close = snd_card_sa11xx_uda1341_close,
804 .ioctl = snd_pcm_lib_ioctl,
805 .hw_params = snd_sa11xx_uda1341_hw_params,
806 .hw_free = snd_sa11xx_uda1341_hw_free,
807 .prepare = snd_sa11xx_uda1341_prepare,
808 .trigger = snd_sa11xx_uda1341_trigger,
809 .pointer = snd_sa11xx_uda1341_pointer,
812 static snd_pcm_ops_t snd_card_sa11xx_uda1341_capture_ops = {
813 .open = snd_card_sa11xx_uda1341_open,
814 .close = snd_card_sa11xx_uda1341_close,
815 .ioctl = snd_pcm_lib_ioctl,
816 .hw_params = snd_sa11xx_uda1341_hw_params,
817 .hw_free = snd_sa11xx_uda1341_hw_free,
818 .prepare = snd_sa11xx_uda1341_prepare,
819 .trigger = snd_sa11xx_uda1341_trigger,
820 .pointer = snd_sa11xx_uda1341_pointer,
823 static int __init snd_card_sa11xx_uda1341_pcm(sa11xx_uda1341_t *sa11xx_uda1341, int device)
828 if ((err = snd_pcm_new(sa11xx_uda1341->card, "UDA1341 PCM", device, 1, 1, &pcm)) < 0)
832 * this sets up our initial buffers and sets the dma_type to isa.
833 * isa works but I'm not sure why (or if) it's the right choice
834 * this may be too large, trying it for now
836 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
840 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_card_sa11xx_uda1341_playback_ops);
841 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_sa11xx_uda1341_capture_ops);
842 pcm->private_data = sa11xx_uda1341;
844 strcpy(pcm->name, "UDA1341 PCM");
846 sa11xx_uda1341_audio_init(sa11xx_uda1341);
848 /* setup DMA controller */
849 audio_dma_request(&sa11xx_uda1341->s[SNDRV_PCM_STREAM_PLAYBACK], audio_dma_callback);
850 audio_dma_request(&sa11xx_uda1341->s[SNDRV_PCM_STREAM_CAPTURE], audio_dma_callback);
852 sa11xx_uda1341->pcm = pcm;
859 /* {{{ module init & exit */
863 static int snd_sa11xx_uda1341_suspend(snd_card_t *card, pm_message_t state)
865 sa11xx_uda1341_t *chip = card->pm_private_data;
867 snd_pcm_suspend_all(chip->pcm);
869 sa1100_dma_sleep(chip->s[SNDRV_PCM_STREAM_PLAYBACK].dmach);
870 sa1100_dma_sleep(chip->s[SNDRV_PCM_STREAM_CAPTURE].dmach);
874 l3_command(chip->uda1341, CMD_SUSPEND, NULL);
875 sa11xx_uda1341_audio_shutdown(chip);
879 static int snd_sa11xx_uda1341_resume(snd_card_t *card)
881 sa11xx_uda1341_t *chip = card->pm_private_data;
883 sa11xx_uda1341_audio_init(chip);
884 l3_command(chip->uda1341, CMD_RESUME, NULL);
886 sa1100_dma_wakeup(chip->s[SNDRV_PCM_STREAM_PLAYBACK].dmach);
887 sa1100_dma_wakeup(chip->s[SNDRV_PCM_STREAM_CAPTURE].dmach);
893 #endif /* COMFIG_PM */
895 void snd_sa11xx_uda1341_free(snd_card_t *card)
897 sa11xx_uda1341_t *chip = card->private_data;
899 audio_dma_free(&chip->s[SNDRV_PCM_STREAM_PLAYBACK]);
900 audio_dma_free(&chip->s[SNDRV_PCM_STREAM_CAPTURE]);
903 static snd_card_t *sa11xx_uda1341_card;
905 static int __init sa11xx_uda1341_init(void)
909 sa11xx_uda1341_t *chip;
911 if (!machine_is_h3xxx())
914 /* register the soundcard */
915 card = snd_card_new(-1, id, THIS_MODULE, sizeof(sa11xx_uda1341_t));
919 sa11xx_uda1341 = kzalloc(sizeof(*sa11xx_uda1341), GFP_KERNEL);
920 if (sa11xx_uda1341 == NULL)
922 card->private_free = snd_sa11xx_uda1341_free;
923 chip = card->private_data;
924 spin_lock_init(&chip->s[0].dma_lock);
925 spin_lock_init(&chip->s[1].dma_lock);
928 chip->samplerate = AUDIO_RATE_DEFAULT;
931 if ((err = snd_chip_uda1341_mixer_new(chip->card, &sa11xx_uda1341->uda1341)))
935 if ((err = snd_card_sa11xx_uda1341_pcm(chip, 0)) < 0)
938 snd_card_set_generic_pm_callback(card,
939 snd_sa11xx_uda1341_suspend, snd_sa11_uda1341_resume,
942 strcpy(card->driver, "UDA1341");
943 strcpy(card->shortname, "H3600 UDA1341TS");
944 sprintf(card->longname, "Compaq iPAQ H3600 with Philips UDA1341TS");
946 if ((err = snd_card_set_generic_dev(card)) < 0)
949 if ((err = snd_card_register(card)) == 0) {
950 printk( KERN_INFO "iPAQ audio support initialized\n" );
951 sa11xx_uda1341_card = card;
960 static void __exit sa11xx_uda1341_exit(void)
962 snd_card_free(sa11xx_uda1341_card);
965 module_init(sa11xx_uda1341_init);
966 module_exit(sa11xx_uda1341_exit);
972 * indent-tabs-mode: t