diff options
Diffstat (limited to 'sound/arm')
| -rw-r--r-- | sound/arm/Kconfig | 20 | ||||
| -rw-r--r-- | sound/arm/Makefile | 7 | ||||
| -rw-r--r-- | sound/arm/aaci.c | 968 | ||||
| -rw-r--r-- | sound/arm/aaci.h | 246 | ||||
| -rw-r--r-- | sound/arm/devdma.c | 81 | ||||
| -rw-r--r-- | sound/arm/devdma.h | 3 | ||||
| -rw-r--r-- | sound/arm/pxa2xx-ac97.c | 410 | ||||
| -rw-r--r-- | sound/arm/pxa2xx-pcm.c | 367 | ||||
| -rw-r--r-- | sound/arm/pxa2xx-pcm.h | 29 |
9 files changed, 2129 insertions, 2 deletions
diff --git a/sound/arm/Kconfig b/sound/arm/Kconfig index cdacf4d3a38..2e4a5e0d16d 100644 --- a/sound/arm/Kconfig +++ b/sound/arm/Kconfig @@ -14,5 +14,23 @@ config SND_SA11XX_UDA1341 To compile this driver as a module, choose M here: the module will be called snd-sa11xx-uda1341. -endmenu +config SND_ARMAACI + tristate "ARM PrimeCell PL041 AC Link support" + depends on SND && ARM_AMBA + select SND_PCM + select SND_AC97_CODEC + +config SND_PXA2XX_PCM + tristate + select SND_PCM +config SND_PXA2XX_AC97 + tristate "AC97 driver for the Intel PXA2xx chip" + depends on ARCH_PXA && SND + select SND_PXA2XX_PCM + select SND_AC97_CODEC + help + Say Y or M if you want to support any AC97 codec attached to + the PXA2xx AC97 interface. + +endmenu diff --git a/sound/arm/Makefile b/sound/arm/Makefile index d7e7dc0c3cd..103f136926d 100644 --- a/sound/arm/Makefile +++ b/sound/arm/Makefile @@ -3,6 +3,11 @@ # snd-sa11xx-uda1341-objs := sa11xx-uda1341.o +snd-aaci-objs := aaci.o devdma.o +snd-pxa2xx-pcm-objs := pxa2xx-pcm.o +snd-pxa2xx-ac97-objs := pxa2xx-ac97.o -# Toplevel Module Dependency obj-$(CONFIG_SND_SA11XX_UDA1341) += snd-sa11xx-uda1341.o +obj-$(CONFIG_SND_ARMAACI) += snd-aaci.o +obj-$(CONFIG_SND_PXA2XX_PCM) += snd-pxa2xx-pcm.o +obj-$(CONFIG_SND_PXA2XX_AC97) += snd-pxa2xx-ac97.o diff --git a/sound/arm/aaci.c b/sound/arm/aaci.c new file mode 100644 index 00000000000..08cc3ddca96 --- /dev/null +++ b/sound/arm/aaci.c @@ -0,0 +1,968 @@ +/* + * linux/sound/arm/aaci.c - ARM PrimeCell AACI PL041 driver + * + * Copyright (C) 2003 Deep Blue Solutions Ltd, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Documentation: ARM DDI 0173B + */ +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/device.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> +#include <linux/err.h> + +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/hardware/amba.h> + +#include <sound/driver.h> +#include <sound/core.h> +#include <sound/initval.h> +#include <sound/ac97_codec.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> + +#include "aaci.h" +#include "devdma.h" + +#define DRIVER_NAME "aaci-pl041" + +/* + * PM support is not complete. Turn it off. + */ +#undef CONFIG_PM + +static void aaci_ac97_select_codec(struct aaci *aaci, ac97_t *ac97) +{ + u32 v, maincr = aaci->maincr | MAINCR_SCRA(ac97->num); + + /* + * Ensure that the slot 1/2 RX registers are empty. + */ + v = readl(aaci->base + AACI_SLFR); + if (v & SLFR_2RXV) + readl(aaci->base + AACI_SL2RX); + if (v & SLFR_1RXV) + readl(aaci->base + AACI_SL1RX); + + writel(maincr, aaci->base + AACI_MAINCR); +} + +/* + * P29: + * The recommended use of programming the external codec through slot 1 + * and slot 2 data is to use the channels during setup routines and the + * slot register at any other time. The data written into slot 1, slot 2 + * and slot 12 registers is transmitted only when their corresponding + * SI1TxEn, SI2TxEn and SI12TxEn bits are set in the AACI_MAINCR + * register. + */ +static void aaci_ac97_write(ac97_t *ac97, unsigned short reg, unsigned short val) +{ + struct aaci *aaci = ac97->private_data; + u32 v; + + if (ac97->num >= 4) + return; + + down(&aaci->ac97_sem); + + aaci_ac97_select_codec(aaci, ac97); + + /* + * P54: You must ensure that AACI_SL2TX is always written + * to, if required, before data is written to AACI_SL1TX. + */ + writel(val << 4, aaci->base + AACI_SL2TX); + writel(reg << 12, aaci->base + AACI_SL1TX); + + /* + * Wait for the transmission of both slots to complete. + */ + do { + v = readl(aaci->base + AACI_SLFR); + } while (v & (SLFR_1TXB|SLFR_2TXB)); + + up(&aaci->ac97_sem); +} + +/* + * Read an AC'97 register. + */ +static unsigned short aaci_ac97_read(ac97_t *ac97, unsigned short reg) +{ + struct aaci *aaci = ac97->private_data; + u32 v; + + if (ac97->num >= 4) + return ~0; + + down(&aaci->ac97_sem); + + aaci_ac97_select_codec(aaci, ac97); + + /* + * Write the register address to slot 1. + */ + writel((reg << 12) | (1 << 19), aaci->base + AACI_SL1TX); + + /* + * Wait for the transmission to complete. + */ + do { + v = readl(aaci->base + AACI_SLFR); + } while (v & SLFR_1TXB); + + /* + * Give the AC'97 codec more than enough time + * to respond. (42us = ~2 frames at 48kHz.) + */ + udelay(42); + + /* + * Wait for slot 2 to indicate data. + */ + do { + cond_resched(); + v = readl(aaci->base + AACI_SLFR) & (SLFR_1RXV|SLFR_2RXV); + } while (v != (SLFR_1RXV|SLFR_2RXV)); + + v = readl(aaci->base + AACI_SL1RX) >> 12; + if (v == reg) { + v = readl(aaci->base + AACI_SL2RX) >> 4; + } else { + dev_err(&aaci->dev->dev, + "wrong ac97 register read back (%x != %x)\n", + v, reg); + v = ~0; + } + + up(&aaci->ac97_sem); + return v; +} + +static inline void aaci_chan_wait_ready(struct aaci_runtime *aacirun) +{ + u32 val; + int timeout = 5000; + + do { + val = readl(aacirun->base + AACI_SR); + } while (val & (SR_TXB|SR_RXB) && timeout--); +} + + + +/* + * Interrupt support. + */ +static void aaci_fifo_irq(struct aaci *aaci, u32 mask) +{ + if (mask & ISR_URINTR) { + writel(ICLR_TXUEC1, aaci->base + AACI_INTCLR); + } + + if (mask & ISR_TXINTR) { + struct aaci_runtime *aacirun = &aaci->playback; + void *ptr; + + if (!aacirun->substream || !aacirun->start) { + dev_warn(&aaci->dev->dev, "TX interrupt???"); + writel(0, aacirun->base + AACI_IE); + return; + } + + ptr = aacirun->ptr; + do { + unsigned int len = aacirun->fifosz; + u32 val; + + if (aacirun->bytes <= 0) { + aacirun->bytes += aacirun->period; + aacirun->ptr = ptr; + spin_unlock(&aaci->lock); + snd_pcm_period_elapsed(aacirun->substream); + spin_lock(&aaci->lock); + } + if (!(aacirun->cr & TXCR_TXEN)) + break; + + val = readl(aacirun->base + AACI_SR); + if (!(val & SR_TXHE)) + break; + if (!(val & SR_TXFE)) + len >>= 1; + + aacirun->bytes -= len; + + /* writing 16 bytes at a time */ + for ( ; len > 0; len -= 16) { + asm( + "ldmia %0!, {r0, r1, r2, r3}\n\t" + "stmia %1, {r0, r1, r2, r3}" + : "+r" (ptr) + : "r" (aacirun->fifo) + : "r0", "r1", "r2", "r3", "cc"); + + if (ptr >= aacirun->end) + ptr = aacirun->start; + } + } while (1); + + aacirun->ptr = ptr; + } +} + +static irqreturn_t aaci_irq(int irq, void *devid, struct pt_regs *regs) +{ + struct aaci *aaci = devid; + u32 mask; + int i; + + spin_lock(&aaci->lock); + mask = readl(aaci->base + AACI_ALLINTS); + if (mask) { + u32 m = mask; + for (i = 0; i < 4; i++, m >>= 7) { + if (m & 0x7f) { + aaci_fifo_irq(aaci, m); + } + } + } + spin_unlock(&aaci->lock); + + return mask ? IRQ_HANDLED : IRQ_NONE; +} + + + +/* + * ALSA support. + */ + +struct aaci_stream { + unsigned char codec_idx; + unsigned char rate_idx; +}; + +static struct aaci_stream aaci_streams[] = { + [ACSTREAM_FRONT] = { + .codec_idx = 0, + .rate_idx = AC97_RATES_FRONT_DAC, + }, + [ACSTREAM_SURROUND] = { + .codec_idx = 0, + .rate_idx = AC97_RATES_SURR_DAC, + }, + [ACSTREAM_LFE] = { + .codec_idx = 0, + .rate_idx = AC97_RATES_LFE_DAC, + }, +}; + +static inline unsigned int aaci_rate_mask(struct aaci *aaci, int streamid) +{ + struct aaci_stream *s = aaci_streams + streamid; + return aaci->ac97_bus->codec[s->codec_idx]->rates[s->rate_idx]; +} + +static unsigned int rate_list[] = { + 5512, 8000, 11025, 16000, 22050, 32000, 44100, + 48000, 64000, 88200, 96000, 176400, 192000 +}; + +/* + * Double-rate rule: we can support double rate iff channels == 2 + * (unimplemented) + */ +static int +aaci_rule_rate_by_channels(snd_pcm_hw_params_t *p, snd_pcm_hw_rule_t *rule) +{ + struct aaci *aaci = rule->private; + unsigned int rate_mask = SNDRV_PCM_RATE_8000_48000|SNDRV_PCM_RATE_5512; + snd_interval_t *c = hw_param_interval(p, SNDRV_PCM_HW_PARAM_CHANNELS); + + switch (c->max) { + case 6: + rate_mask &= aaci_rate_mask(aaci, ACSTREAM_LFE); + case 4: + rate_mask &= aaci_rate_mask(aaci, ACSTREAM_SURROUND); + case 2: + rate_mask &= aaci_rate_mask(aaci, ACSTREAM_FRONT); + } + + return snd_interval_list(hw_param_interval(p, rule->var), + ARRAY_SIZE(rate_list), rate_list, + rate_mask); +} + +static snd_pcm_hardware_t aaci_hw_info = { + .info = SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_RESUME, + + /* + * ALSA doesn't support 18-bit or 20-bit packed into 32-bit + * words. It also doesn't support 12-bit at all. + */ + .formats = SNDRV_PCM_FMTBIT_S16_LE, + + /* should this be continuous or knot? */ + .rates = SNDRV_PCM_RATE_CONTINUOUS, + .rate_max = 48000, + .rate_min = 4000, + .channels_min = 2, + .channels_max = 6, + .buffer_bytes_max = 64 * 1024, + .period_bytes_min = 256, + .period_bytes_max = PAGE_SIZE, + .periods_min = 4, + .periods_max = PAGE_SIZE / 16, +}; + +static int aaci_pcm_open(struct aaci *aaci, snd_pcm_substream_t *substream, + struct aaci_runtime *aacirun) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + int ret; + + aacirun->substream = substream; + runtime->private_data = aacirun; + runtime->hw = aaci_hw_info; + + /* + * FIXME: ALSA specifies fifo_size in bytes. If we're in normal + * mode, each 32-bit word contains one sample. If we're in + * compact mode, each 32-bit word contains two samples, effectively + * halving the FIFO size. However, we don't know for sure which + * we'll be using at this point. We set this to the lower limit. + */ + runtime->hw.fifo_size = aaci->fifosize * 2; + + /* + * Add rule describing hardware rate dependency + * on the number of channels. + */ + ret = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, + aaci_rule_rate_by_channels, aaci, + SNDRV_PCM_HW_PARAM_CHANNELS, + SNDRV_PCM_HW_PARAM_RATE, -1); + if (ret) + goto out; + + ret = request_irq(aaci->dev->irq[0], aaci_irq, SA_SHIRQ|SA_INTERRUPT, + DRIVER_NAME, aaci); + if (ret) + goto out; + + return 0; + + out: + return ret; +} + + +/* + * Common ALSA stuff + */ +static int aaci_pcm_close(snd_pcm_substream_t *substream) +{ + struct aaci *aaci = substream->private_data; + struct aaci_runtime *aacirun = substream->runtime->private_data; + + WARN_ON(aacirun->cr & TXCR_TXEN); + + aacirun->substream = NULL; + free_irq(aaci->dev->irq[0], aaci); + + return 0; +} + +static int aaci_pcm_hw_free(snd_pcm_substream_t *substream) +{ + struct aaci_runtime *aacirun = substream->runtime->private_data; + + /* + * This must not be called with the device enabled. + */ + WARN_ON(aacirun->cr & TXCR_TXEN); + + if (aacirun->pcm_open) + snd_ac97_pcm_close(aacirun->pcm); + aacirun->pcm_open = 0; + + /* + * Clear out the DMA and any allocated buffers. + */ + devdma_hw_free(NULL, substream); + + return 0; +} + +static int aaci_pcm_hw_params(snd_pcm_substream_t *substream, + struct aaci_runtime *aacirun, + snd_pcm_hw_params_t *params) +{ + int err; + + aaci_pcm_hw_free(substream); + + err = devdma_hw_alloc(NULL, substream, + params_buffer_bytes(params)); + if (err < 0) + goto out; + + err = snd_ac97_pcm_open(aacirun->pcm, params_rate(params), + params_channels(params), + aacirun->pcm->r[0].slots); + if (err) + goto out; + + aacirun->pcm_open = 1; + + out: + return err; +} + +static int aaci_pcm_prepare(snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + struct aaci_runtime *aacirun = runtime->private_data; + + aacirun->start = (void *)runtime->dma_area; + aacirun->end = aacirun->start + runtime->dma_bytes; + aacirun->ptr = aacirun->start; + aacirun->period = + aacirun->bytes = frames_to_bytes(runtime, runtime->period_size); + + return 0; +} + +static snd_pcm_uframes_t aaci_pcm_pointer(snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + struct aaci_runtime *aacirun = runtime->private_data; + ssize_t bytes = aacirun->ptr - aacirun->start; + + return bytes_to_frames(runtime, bytes); +} + +static int aaci_pcm_mmap(snd_pcm_substream_t *substream, struct vm_area_struct *vma) +{ + return devdma_mmap(NULL, substream, vma); +} + + +/* + * Playback specific ALSA stuff + */ +static const u32 channels_to_txmask[] = { + [2] = TXCR_TX3 | TXCR_TX4, + [4] = TXCR_TX3 | TXCR_TX4 | TXCR_TX7 | TXCR_TX8, + [6] = TXCR_TX3 | TXCR_TX4 | TXCR_TX7 | TXCR_TX8 | TXCR_TX6 | TXCR_TX9, +}; + +/* + * We can support two and four channel audio. Unfortunately + * six channel audio requires a non-standard channel ordering: + * 2 -> FL(3), FR(4) + * 4 -> FL(3), FR(4), SL(7), SR(8) + * 6 -> FL(3), FR(4), SL(7), SR(8), C(6), LFE(9) (required) + * FL(3), FR(4), C(6), SL(7), SR(8), LFE(9) (actual) + * This requires an ALSA configuration file to correct. + */ +static unsigned int channel_list[] = { 2, 4, 6 }; + +static int +aaci_rule_channels(snd_pcm_hw_params_t *p, snd_pcm_hw_rule_t *rule) +{ + struct aaci *aaci = rule->private; + unsigned int chan_mask = 1 << 0, slots; + + /* + * pcms[0] is the our 5.1 PCM instance. + */ + slots = aaci->ac97_bus->pcms[0].r[0].slots; + if (slots & (1 << AC97_SLOT_PCM_SLEFT)) { + chan_mask |= 1 << 1; + if (slots & (1 << AC97_SLOT_LFE)) + chan_mask |= 1 << 2; + } + + return snd_interval_list(hw_param_interval(p, rule->var), + ARRAY_SIZE(channel_list), channel_list, + chan_mask); +} + +static int aaci_pcm_playback_open(snd_pcm_substream_t *substream) +{ + struct aaci *aaci = substream->private_data; + int ret; + + /* + * Add rule describing channel dependency. + */ + ret = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + aaci_rule_channels, aaci, + SNDRV_PCM_HW_PARAM_CHANNELS, -1); + if (ret) + return ret; + + return aaci_pcm_open(aaci, substream, &aaci->playback); +} + +static int aaci_pcm_playback_hw_params(snd_pcm_substream_t *substream, + snd_pcm_hw_params_t *params) +{ + struct aaci *aaci = substream->private_data; + struct aaci_runtime *aacirun = substream->runtime->private_data; + unsigned int channels = params_channels(params); + int ret; + + WARN_ON(channels >= ARRAY_SIZE(channels_to_txmask) || + !channels_to_txmask[channels]); + + ret = aaci_pcm_hw_params(substream, aacirun, params); + + /* + * Enable FIFO, compact mode, 16 bits per sample. + * FIXME: double rate slots? + */ + if (ret >= 0) { + aacirun->cr = TXCR_FEN | TXCR_COMPACT | TXCR_TSZ16; + aacirun->cr |= channels_to_txmask[channels]; + + aacirun->fifosz = aaci->fifosize * 4; + if (aacirun->cr & TXCR_COMPACT) + aacirun->fifosz >>= 1; + } + return ret; +} + +static void aaci_pcm_playback_stop(struct aaci_runtime *aacirun) +{ + u32 ie; + + ie = readl(aacirun->base + AACI_IE); + ie &= ~(IE_URIE|IE_TXIE); + writel(ie, aacirun->base + AACI_IE); + aacirun->cr &= ~TXCR_TXEN; + aaci_chan_wait_ready(aacirun); + writel(aacirun->cr, aacirun->base + AACI_TXCR); +} + +static void aaci_pcm_playback_start(struct aaci_runtime *aacirun) +{ + u32 ie; + + aaci_chan_wait_ready(aacirun); + aacirun->cr |= TXCR_TXEN; + + ie = readl(aacirun->base + AACI_IE); + ie |= IE_URIE | IE_TXIE; + writel(ie, aacirun->base + AACI_IE); + writel(aacirun->cr, aacirun->base + AACI_TXCR); +} + +static int aaci_pcm_playback_trigger(snd_pcm_substream_t *substream, int cmd) +{ + struct aaci *aaci = substream->private_data; + struct aaci_runtime *aacirun = substream->runtime->private_data; + unsigned long flags; + int ret = 0; + + spin_lock_irqsave(&aaci->lock, flags); + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + aaci_pcm_playback_start(aacirun); + break; + + case SNDRV_PCM_TRIGGER_RESUME: + aaci_pcm_playback_start(aacirun); + break; + + case SNDRV_PCM_TRIGGER_STOP: + aaci_pcm_playback_stop(aacirun); + break; + + case SNDRV_PCM_TRIGGER_SUSPEND: + aaci_pcm_playback_stop(aacirun); + break; + + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + break; + + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + break; + + default: + ret = -EINVAL; + } + spin_unlock_irqrestore(&aaci->lock, flags); + + return ret; +} + +static snd_pcm_ops_t aaci_playback_ops = { + .open = aaci_pcm_playback_open, + .close = aaci_pcm_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = aaci_pcm_playback_hw_params, + .hw_free = aaci_pcm_hw_free, + .prepare = aaci_pcm_prepare, + .trigger = aaci_pcm_playback_trigger, + .pointer = aaci_pcm_pointer, + .mmap = aaci_pcm_mmap, +}; + + + +/* + * Power Management. + */ +#ifdef CONFIG_PM +static int aaci_do_suspend(snd_card_t *card, unsigned int state) +{ + struct aaci *aaci = card->private_data; + if (aaci->card->power_state != SNDRV_CTL_POWER_D3cold) { + snd_pcm_suspend_all(aaci->pcm); + snd_power_change_state(aaci->card, SNDRV_CTL_POWER_D3cold); + } + return 0; +} + +static int aaci_do_resume(snd_card_t *card, unsigned int state) +{ + struct aaci *aaci = card->private_data; + if (aaci->card->power_state != SNDRV_CTL_POWER_D0) { + snd_power_change_state(aaci->card, SNDRV_CTL_POWER_D0); + } + return 0; +} + +static int aaci_suspend(struct amba_device *dev, u32 state) +{ + snd_card_t *card = amba_get_drvdata(dev); + return card ? aaci_do_suspend(card) : 0; +} + +static int aaci_resume(struct amba_device *dev) +{ + snd_card_t *card = amba_get_drvdata(dev); + return card ? aaci_do_resume(card) : 0; +} +#else +#define aaci_do_suspend NULL +#define aaci_do_resume NULL +#define aaci_suspend NULL +#define aaci_resume NULL +#endif + + +static struct ac97_pcm ac97_defs[] __devinitdata = { + [0] = { /* Front PCM */ + .exclusive = 1, + .r = { + [0] = { + .slots = (1 << AC97_SLOT_PCM_LEFT) | + (1 << AC97_SLOT_PCM_RIGHT) | + (1 << AC97_SLOT_PCM_CENTER) | + (1 << AC97_SLOT_PCM_SLEFT) | + (1 << AC97_SLOT_PCM_SRIGHT) | + (1 << AC97_SLOT_LFE), + }, + }, + }, + [1] = { /* PCM in */ + .stream = 1, + .exclusive = 1, + .r = { + [0] = { + .slots = (1 << AC97_SLOT_PCM_LEFT) | + (1 << AC97_SLOT_PCM_RIGHT), + }, + }, + }, + [2] = { /* Mic in */ + .stream = 1, + .exclusive = 1, + .r = { + [0] = { + .slots = (1 << AC97_SLOT_MIC), + }, + }, + } +}; + +static ac97_bus_ops_t aaci_bus_ops = { + .write = aaci_ac97_write, + .read = aaci_ac97_read, +}; + +static int __devinit aaci_probe_ac97(struct aaci *aaci) +{ + ac97_template_t ac97_template; + ac97_bus_t *ac97_bus; + ac97_t *ac97; + int ret; + + /* + * Assert AACIRESET for 2us + */ + writel(0, aaci->base + AACI_RESET); + udelay(2); + writel(RESET_NRST, aaci->base + AACI_RESET); + + /* + * Give the AC'97 codec more than enough time + * to wake up. (42us = ~2 frames at 48kHz.) + */ + udelay(42); + + ret = snd_ac97_bus(aaci->card, 0, &aaci_bus_ops, aaci, &ac97_bus); + if (ret) + goto out; + + ac97_bus->clock = 48000; + aaci->ac97_bus = ac97_bus; + + memset(&ac97_template, 0, sizeof(ac97_template_t)); + ac97_template.private_data = aaci; + ac97_template.num = 0; + ac97_template.scaps = AC97_SCAP_SKIP_MODEM; + + ret = snd_ac97_mixer(ac97_bus, &ac97_template, &ac97); + if (ret) + goto out; + + /* + * Disable AC97 PC Beep input on audio codecs. + */ + if (ac97_is_audio(ac97)) + snd_ac97_write_cache(ac97, AC97_PC_BEEP, 0x801e); + + ret = snd_ac97_pcm_assign(ac97_bus, ARRAY_SIZE(ac97_defs), ac97_defs); + if (ret) + goto out; + + aaci->playback.pcm = &ac97_bus->pcms[0]; + + out: + return ret; +} + +static void aaci_free_card(snd_card_t *card) +{ + struct aaci *aaci = card->private_data; + if (aaci->base) + iounmap(aaci->base); +} + +static struct aaci * __devinit aaci_init_card(struct amba_device *dev) +{ + struct aaci *aaci; + snd_card_t *card; + + card = snd_card_new(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1, + THIS_MODULE, sizeof(struct aaci)); + if (card == NULL) + return ERR_PTR(-ENOMEM); + + card->private_free = aaci_free_card; + snd_card_set_pm_callback(card, aaci_do_suspend, aaci_do_resume, NULL); + + strlcpy(card->driver, DRIVER_NAME, sizeof(card->driver)); + strlcpy(card->shortname, "ARM AC'97 Interface", sizeof(card->shortname)); + snprintf(card->longname, sizeof(card->longname), + "%s at 0x%08lx, irq %d", + card->shortname, dev->res.start, dev->irq[0]); + + aaci = card->private_data; + init_MUTEX(&aaci->ac97_sem); + spin_lock_init(&aaci->lock); + aaci->card = card; + aaci->dev = dev; + + /* Set MAINCR to allow slot 1 and 2 data IO */ + aaci->maincr = MAINCR_IE | MAINCR_SL1RXEN | MAINCR_SL1TXEN | + MAINCR_SL2RXEN | MAINCR_SL2TXEN; + + return aaci; +} + +static int __devinit aaci_init_pcm(struct aaci *aaci) +{ + snd_pcm_t *pcm; + int ret; + + ret = snd_pcm_new(aaci->card, "AACI AC'97", 0, 1, 0, &pcm); + if (ret == 0) { + aaci->pcm = pcm; + pcm->private_data = aaci; + pcm->info_flags = 0; + + strlcpy(pcm->name, DRIVER_NAME, sizeof(pcm->name)); + + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &aaci_playback_ops); + } + + return ret; +} + +static unsigned int __devinit aaci_size_fifo(struct aaci *aaci) +{ + void *base = aaci->base + AACI_CSCH1; + int i; + + writel(TXCR_FEN | TXCR_TSZ16 | TXCR_TXEN, base + AACI_TXCR); + + for (i = 0; !(readl(base + AACI_SR) & SR_TXFF) && i < 4096; i++) + writel(0, aaci->base + AACI_DR1); + + writel(0, base + AACI_TXCR); + + /* + * Re-initialise the AACI after the FIFO depth test, to + * ensure that the FIFOs are empty. Unfortunately, merely + * disabling the channel doesn't clear the FIFO. + */ + writel(aaci->maincr & ~MAINCR_IE, aaci->base + AACI_MAINCR); + writel(aaci->maincr, aaci->base + AACI_MAINCR); + + /* + * If we hit 4096, we failed. Go back to the specified + * fifo depth. + */ + if (i == 4096) + i = 8; + + return i; +} + +static int __devinit aaci_probe(struct amba_device *dev, void *id) +{ + struct aaci *aaci; + int ret, i; + + ret = amba_request_regions(dev, NULL); + if (ret) + return ret; + + aaci = aaci_init_card(dev); + if (IS_ERR(aaci)) { + ret = PTR_ERR(aaci); + goto out; + } + + aaci->base = ioremap(dev->res.start, SZ_4K); + if (!aaci->base) { + ret = -ENOMEM; + goto out; + } + + /* + * Playback uses AACI channel 0 + */ + aaci->playback.base = aaci->base + AACI_CSCH1; + aaci->playback.fifo = aaci->base + AACI_DR1; + + for (i = 0; i < 4; i++) { + void *base = aaci->base + i * 0x14; + + writel(0, base + AACI_IE); + writel(0, base + AACI_TXCR); + writel(0, base + AACI_RXCR); + } + + writel(0x1fff, aaci->base + AACI_INTCLR); + writel(aaci->maincr, aaci->base + AACI_MAINCR); + + /* + * Size the FIFOs. + */ + aaci->fifosize = aaci_size_fifo(aaci); + + ret = aaci_probe_ac97(aaci); + if (ret) + goto out; + + ret = aaci_init_pcm(aaci); + if (ret) + goto out; + + ret = snd_card_register(aaci->card); + if (ret == 0) { + dev_info(&dev->dev, "%s, fifo %d\n", aaci->card->longname, + aaci->fifosize); + amba_set_drvdata(dev, aaci->card); + return ret; + } + + out: + if (aaci) + snd_card_free(aaci->card); + amba_release_regions(dev); + return ret; +} + +static int __devexit aaci_remove(struct amba_device *dev) +{ + snd_card_t *card = amba_get_drvdata(dev); + + amba_set_drvdata(dev, NULL); + + if (card) { + struct aaci *aaci = card->private_data; + writel(0, aaci->base + AACI_MAINCR); + + snd_card_free(card); + amba_release_regions(dev); + } + + return 0; +} + +static struct amba_id aaci_ids[] = { + { + .id = 0x00041041, + .mask = 0x000fffff, + }, + { 0, 0 }, +}; + +static struct amba_driver aaci_driver = { + .drv = { + .name = DRIVER_NAME, + }, + .probe = aaci_probe, + .remove = __devexit_p(aaci_remove), + .suspend = aaci_suspend, + .resume = aaci_resume, + .id_table = aaci_ids, +}; + +static int __init aaci_init(void) +{ + return amba_driver_register(&aaci_driver); +} + +static void __exit aaci_exit(void) +{ + amba_driver_unregister(&aaci_driver); +} + +module_init(aaci_init); +module_exit(aaci_exit); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("ARM PrimeCell PL041 Advanced Audio CODEC Interface driver"); diff --git a/sound/arm/aaci.h b/sound/arm/aaci.h new file mode 100644 index 00000000000..d752e642689 --- /dev/null +++ b/sound/arm/aaci.h @@ -0,0 +1,246 @@ +/* + * linux/sound/arm/aaci.c - ARM PrimeCell AACI PL041 driver + * + * Copyright (C) 2003 Deep Blue Solutions, Ltd, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef AACI_H +#define AACI_H + +/* + * Control and status register offsets + * P39. + */ +#define AACI_CSCH1 0x000 +#define AACI_CSCH2 0x014 +#define AACI_CSCH3 0x028 +#define AACI_CSCH4 0x03c + +#define AACI_RXCR 0x000 /* 29 bits Control Rx FIFO */ +#define AACI_TXCR 0x004 /* 17 bits Control Tx FIFO */ +#define AACI_SR 0x008 /* 12 bits Status */ +#define AACI_ISR 0x00c /* 7 bits Int Status */ +#define AACI_IE 0x010 /* 7 bits Int Enable */ + +/* + * Other registers + */ +#define AACI_SL1RX 0x050 +#define AACI_SL1TX 0x054 +#define AACI_SL2RX 0x058 +#define AACI_SL2TX 0x05c +#define AACI_SL12RX 0x060 +#define AACI_SL12TX 0x064 +#define AACI_SLFR 0x068 /* slot flags */ +#define AACI_SLISTAT 0x06c /* slot interrupt status */ +#define AACI_SLIEN 0x070 /* slot interrupt enable */ +#define AACI_INTCLR 0x074 /* interrupt clear */ +#define AACI_MAINCR 0x078 /* main control */ +#define AACI_RESET 0x07c /* reset control */ +#define AACI_SYNC 0x080 /* sync control */ +#define AACI_ALLINTS 0x084 /* all fifo interrupt status */ +#define AACI_MAINFR 0x088 /* main flag register */ +#define AACI_DR1 0x090 /* data read/written fifo 1 */ +#define AACI_DR2 0x0b0 /* data read/written fifo 2 */ +#define AACI_DR3 0x0d0 /* data read/written fifo 3 */ +#define AACI_DR4 0x0f0 /* data read/written fifo 4 */ + +/* + * transmit fifo control register. P48 + */ +#define TXCR_FEN (1 << 16) /* fifo enable */ +#define TXCR_COMPACT (1 << 15) /* compact mode */ +#define TXCR_TSZ16 (0 << 13) /* 16 bits */ +#define TXCR_TSZ18 (1 << 13) /* 18 bits */ +#define TXCR_TSZ20 (2 << 13) /* 20 bits */ +#define TXCR_TSZ12 (3 << 13) /* 12 bits */ +#define TXCR_TX12 (1 << 12) /* transmits slot 12 */ +#define TXCR_TX11 (1 << 11) /* transmits slot 12 */ +#define TXCR_TX10 (1 << 10) /* transmits slot 12 */ +#define TXCR_TX9 (1 << 9) /* transmits slot 12 */ +#define TXCR_TX8 (1 << 8) /* transmits slot 12 */ +#define TXCR_TX7 (1 << 7) /* transmits slot 12 */ +#define TXCR_TX6 (1 << 6) /* transmits slot 12 */ +#define TXCR_TX5 (1 << 5) /* transmits slot 12 */ +#define TXCR_TX4 (1 << 4) /* transmits slot 12 */ +#define TXCR_TX3 (1 << 3) /* transmits slot 12 */ +#define TXCR_TX2 (1 << 2) /* transmits slot 12 */ +#define TXCR_TX1 (1 << 1) /* transmits slot 12 */ +#define TXCR_TXEN (1 << 0) /* transmit enable */ + +/* + * status register bits. P49 + */ +#define SR_RXTOFE (1 << 11) /* rx timeout fifo empty */ +#define SR_TXTO (1 << 10) /* rx timeout fifo nonempty */ +#define SR_TXU (1 << 9) /* tx underrun */ +#define SR_RXO (1 << 8) /* rx overrun */ +#define SR_TXB (1 << 7) /* tx busy */ +#define SR_RXB (1 << 6) /* rx busy */ +#define SR_TXFF (1 << 5) /* tx fifo full */ +#define SR_RXFF (1 << 4) /* rx fifo full */ +#define SR_TXHE (1 << 3) /* tx fifo half empty */ +#define SR_RXHF (1 << 2) /* rx fifo half full */ +#define SR_TXFE (1 << 1) /* tx fifo empty */ +#define SR_RXFE (1 << 0) /* rx fifo empty */ + +/* + * interrupt status register bits. + */ +#define ISR_RXTOFEINTR (1 << 6) /* rx fifo empty */ +#define ISR_URINTR (1 << 5) /* tx underflow */ +#define ISR_ORINTR (1 << 4) /* rx overflow */ +#define ISR_RXINTR (1 << 3) /* rx fifo */ +#define ISR_TXINTR (1 << 2) /* tx fifo intr */ +#define ISR_RXTOINTR (1 << 1) /* tx timeout */ +#define ISR_TXCINTR (1 << 0) /* tx complete */ + +/* + * interrupt enable register bits. + */ +#define IE_RXTOIE (1 << 6) +#define IE_URIE (1 << 5) +#define IE_ORIE (1 << 4) +#define IE_RXIE (1 << 3) +#define IE_TXIE (1 << 2) +#define IE_RXTIE (1 << 1) +#define IE_TXCIE (1 << 0) + +/* + * interrupt status. P51 + */ +#define ISR_RXTOFE (1 << 6) /* rx timeout fifo empty */ +#define ISR_UR (1 << 5) /* tx fifo underrun */ +#define ISR_OR (1 << 4) /* rx fifo overrun */ +#define ISR_RX (1 << 3) /* rx interrupt status */ +#define ISR_TX (1 << 2) /* tx interrupt status */ +#define ISR_RXTO (1 << 1) /* rx timeout */ +#define ISR_TXC (1 << 0) /* tx complete */ + +/* + * interrupt enable. P52 + */ +#define IE_RXTOFE (1 << 6) /* rx timeout fifo empty */ +#define IE_UR (1 << 5) /* tx fifo underrun */ +#define IE_OR (1 << 4) /* rx fifo overrun */ +#define IE_RX (1 << 3) /* rx interrupt status */ +#define IE_TX (1 << 2) /* tx interrupt status */ +#define IE_RXTO (1 << 1) /* rx timeout */ +#define IE_TXC (1 << 0) /* tx complete */ + +/* + * slot flag register bits. P56 + */ +#define SLFR_RWIS (1 << 13) /* raw wake-up interrupt status */ +#define SLFR_RGPIOINTR (1 << 12) /* raw gpio interrupt */ +#define SLFR_12TXE (1 << 11) /* slot 12 tx empty */ +#define SLFR_12RXV (1 << 10) /* slot 12 rx valid */ +#define SLFR_2TXE (1 << 9) /* slot 2 tx empty */ +#define SLFR_2RXV (1 << 8) /* slot 2 rx valid */ +#define SLFR_1TXE (1 << 7) /* slot 1 tx empty */ +#define SLFR_1RXV (1 << 6) /* slot 1 rx valid */ +#define SLFR_12TXB (1 << 5) /* slot 12 tx busy */ +#define SLFR_12RXB (1 << 4) /* slot 12 rx busy */ +#define SLFR_2TXB (1 << 3) /* slot 2 tx busy */ +#define SLFR_2RXB (1 << 2) /* slot 2 rx busy */ +#define SLFR_1TXB (1 << 1) /* slot 1 tx busy */ +#define SLFR_1RXB (1 << 0) /* slot 1 rx busy */ + +/* + * Interrupt clear register. + */ +#define ICLR_RXTOFEC4 (1 << 12) +#define ICLR_RXTOFEC3 (1 << 11) +#define ICLR_RXTOFEC2 (1 << 10) +#define ICLR_RXTOFEC1 (1 << 9) +#define ICLR_TXUEC4 (1 << 8) +#define ICLR_TXUEC3 (1 << 7) +#define ICLR_TXUEC2 (1 << 6) +#define ICLR_TXUEC1 (1 << 5) +#define ICLR_RXOEC4 (1 << 4) +#define ICLR_RXOEC3 (1 << 3) +#define ICLR_RXOEC2 (1 << 2) +#define ICLR_RXOEC1 (1 << 1) +#define ICLR_WISC (1 << 0) + +/* + * Main control register bits. P62 + */ +#define MAINCR_SCRA(x) ((x) << 10) /* secondary codec reg access */ +#define MAINCR_DMAEN (1 << 9) /* dma enable */ +#define MAINCR_SL12TXEN (1 << 8) /* slot 12 transmit enable */ +#define MAINCR_SL12RXEN (1 << 7) /* slot 12 receive enable */ +#define MAINCR_SL2TXEN (1 << 6) /* slot 2 transmit enable */ +#define MAINCR_SL2RXEN (1 << 5) /* slot 2 receive enable */ +#define MAINCR_SL1TXEN (1 << 4) /* slot 1 transmit enable */ +#define MAINCR_SL1RXEN (1 << 3) /* slot 1 receive enable */ +#define MAINCR_LPM (1 << 2) /* low power mode */ +#define MAINCR_LOOPBK (1 << 1) /* loopback */ +#define MAINCR_IE (1 << 0) /* aaci interface enable */ + +/* + * Reset register bits. P65 + */ +#define RESET_NRST (1 << 0) + +/* + * Sync register bits. P65 + */ +#define SYNC_FORCE (1 << 0) + +/* + * Main flag register bits. P66 + */ +#define MAINFR_TXB (1 << 1) /* transmit busy */ +#define MAINFR_RXB (1 << 0) /* receive busy */ + + + +struct aaci_runtime { + void *base; + void *fifo; + + struct ac97_pcm *pcm; + int pcm_open; + + u32 cr; + snd_pcm_substream_t *substream; + + /* + * PIO support + */ + void *start; + void *end; + void *ptr; + int bytes; + unsigned int period; + unsigned int fifosz; +}; + +struct aaci { + struct amba_device *dev; + snd_card_t *card; + void *base; + unsigned int fifosize; + + /* AC'97 */ + struct semaphore ac97_sem; + ac97_bus_t *ac97_bus; + + u32 maincr; + spinlock_t lock; + + struct aaci_runtime playback; + struct aaci_runtime capture; + + snd_pcm_t *pcm; +}; + +#define ACSTREAM_FRONT 0 +#define ACSTREAM_SURROUND 1 +#define ACSTREAM_LFE 2 + +#endif diff --git a/sound/arm/devdma.c b/sound/arm/devdma.c new file mode 100644 index 00000000000..60826a5324b --- /dev/null +++ b/sound/arm/devdma.c @@ -0,0 +1,81 @@ +/* + * linux/sound/arm/devdma.c + * + * Copyright (C) 2003-2004 Russell King, All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * ARM DMA shim for ALSA. + */ +#include <linux/device.h> +#include <linux/dma-mapping.h> + +#include <sound/driver.h> +#include <sound/core.h> +#include <sound/pcm.h> + +#include "devdma.h" + +void devdma_hw_free(struct device *dev, snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + struct snd_dma_buffer *buf = runtime->dma_buffer_p; + + if (runtime->dma_area == NULL) + return; + + if (buf != &substream->dma_buffer) { + dma_free_coherent(buf->dev.dev, buf->bytes, buf->area, buf->addr); + kfree(runtime->dma_buffer_p); + } + + snd_pcm_set_runtime_buffer(substream, NULL); +} + +int devdma_hw_alloc(struct device *dev, snd_pcm_substream_t *substream, size_t size) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + struct snd_dma_buffer *buf = runtime->dma_buffer_p; + int ret = 0; + + if (buf) { + if (buf->bytes >= size) + goto out; + devdma_hw_free(dev, substream); + } + + if (substream->dma_buffer.area != NULL && substream->dma_buffer.bytes >= size) { + buf = &substream->dma_buffer; + } else { + buf = kmalloc(sizeof(struct snd_dma_buffer), GFP_KERNEL); + if (!buf) + goto nomem; + + buf->dev.type = SNDRV_DMA_TYPE_DEV; + buf->dev.dev = dev; + buf->area = dma_alloc_coherent(dev, size, &buf->addr, GFP_KERNEL); + buf->bytes = size; + buf->private_data = NULL; + + if (!buf->area) + goto free; + } + snd_pcm_set_runtime_buffer(substream, buf); + ret = 1; + out: + runtime->dma_bytes = size; + return ret; + + free: + kfree(buf); + nomem: + return -ENOMEM; +} + +int devdma_mmap(struct device *dev, snd_pcm_substream_t *substream, struct vm_area_struct *vma) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + return dma_mmap_coherent(dev, vma, runtime->dma_area, runtime->dma_addr, runtime->dma_bytes); +} diff --git a/sound/arm/devdma.h b/sound/arm/devdma.h new file mode 100644 index 00000000000..5a33b6bacc3 --- /dev/null +++ b/sound/arm/devdma.h @@ -0,0 +1,3 @@ +void devdma_hw_free(struct device *dev, snd_pcm_substream_t *substream); +int devdma_hw_alloc(struct device *dev, snd_pcm_substream_t *substream, size_t size); +int devdma_mmap(struct device *dev, snd_pcm_substream_t *substream, struct vm_area_struct *vma); diff --git a/sound/arm/pxa2xx-ac97.c b/sound/arm/pxa2xx-ac97.c new file mode 100644 index 00000000000..46052304e23 --- /dev/null +++ b/sound/arm/pxa2xx-ac97.c @@ -0,0 +1,410 @@ +/* + * linux/sound/pxa2xx-ac97.c -- AC97 support for the Intel PXA2xx chip. + * + * Author: Nicolas Pitre + * Created: Dec 02, 2004 + * Copyright: MontaVista Software Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/interrupt.h> +#include <linux/wait.h> +#include <linux/delay.h> + +#include <sound/driver.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/ac97_codec.h> +#include <sound/initval.h> + +#include <asm/irq.h> +#include <asm/semaphore.h> +#include <asm/hardware.h> +#include <asm/arch/pxa-regs.h> +#include <asm/arch/audio.h> + +#include "pxa2xx-pcm.h" + + +static DECLARE_MUTEX(car_mutex); +static DECLARE_WAIT_QUEUE_HEAD(gsr_wq); +static volatile long gsr_bits; + +static unsigned short pxa2xx_ac97_read(ac97_t *ac97, unsigned short reg) +{ + unsigned short val = -1; + volatile u32 *reg_addr; + + down(&car_mutex); + if (CAR & CAR_CAIP) { + printk(KERN_CRIT"%s: CAR_CAIP already set\n", __FUNCTION__); + goto out; + } + + /* set up primary or secondary codec space */ + reg_addr = (ac97->num & 1) ? &SAC_REG_BASE : &PAC_REG_BASE; + reg_addr += (reg >> 1); + + /* start read access across the ac97 link */ + gsr_bits = 0; + val = *reg_addr; + if (reg == AC97_GPIO_STATUS) + goto out; + wait_event_timeout(gsr_wq, gsr_bits & GSR_SDONE, 1); + if (!gsr_bits & GSR_SDONE) { + printk(KERN_ERR "%s: read error (ac97_reg=%d GSR=%#lx)\n", + __FUNCTION__, reg, gsr_bits); + val = -1; + goto out; + } + + /* valid data now */ + gsr_bits = 0; + val = *reg_addr; + /* but we've just started another cycle... */ + wait_event_timeout(gsr_wq, gsr_bits & GSR_SDONE, 1); + +out: up(&car_mutex); + return val; +} + +static void pxa2xx_ac97_write(ac97_t *ac97, unsigned short reg, unsigned short val) +{ + volatile u32 *reg_addr; + + down(&car_mutex); + + if (CAR & CAR_CAIP) { + printk(KERN_CRIT "%s: CAR_CAIP already set\n", __FUNCTION__); + goto out; + } + + /* set up primary or secondary codec space */ + reg_addr = (ac97->num & 1) ? &SAC_REG_BASE : &PAC_REG_BASE; + reg_addr += (reg >> 1); + gsr_bits = 0; + *reg_addr = val; + wait_event_timeout(gsr_wq, gsr_bits & GSR_CDONE, 1); + if (!gsr_bits & GSR_SDONE) + printk(KERN_ERR "%s: write error (ac97_reg=%d GSR=%#lx)\n", + __FUNCTION__, reg, gsr_bits); + +out: up(&car_mutex); +} + +static void pxa2xx_ac97_reset(ac97_t *ac97) +{ + /* First, try cold reset */ + GCR &= GCR_COLD_RST; /* clear everything but nCRST */ + GCR &= ~GCR_COLD_RST; /* then assert nCRST */ + + gsr_bits = 0; +#ifdef CONFIG_PXA27x + /* PXA27x Developers Manual section 13.5.2.2.1 */ + pxa_set_cken(1 << 31, 1); + udelay(5); + pxa_set_cken(1 << 31, 0); + GCR = GCR_COLD_RST; + udelay(50); +#else + GCR = GCR_COLD_RST; + GCR |= GCR_CDONE_IE|GCR_SDONE_IE; + wait_event_timeout(gsr_wq, gsr_bits & (GSR_PCR | GSR_SCR), 1); +#endif + + if (!((GSR | gsr_bits) & (GSR_PCR | GSR_SCR))) { + printk(KERN_INFO "%s: cold reset timeout (GSR=%#lx)\n", + __FUNCTION__, gsr_bits); + + /* let's try warm reset */ + gsr_bits = 0; +#ifdef CONFIG_PXA27x + /* warm reset broken on Bulverde, + so manually keep AC97 reset high */ + pxa_gpio_mode(113 | GPIO_OUT | GPIO_DFLT_HIGH); + udelay(10); + GCR |= GCR_WARM_RST; + pxa_gpio_mode(113 | GPIO_ALT_FN_2_OUT); + udelay(50); +#else + GCR |= GCR_WARM_RST|GCR_PRIRDY_IEN|GCR_SECRDY_IEN;; + wait_event_timeout(gsr_wq, gsr_bits & (GSR_PCR | GSR_SCR), 1); +#endif + + if (!((GSR | gsr_bits) & (GSR_PCR | GSR_SCR))) + printk(KERN_INFO "%s: warm reset timeout (GSR=%#lx)\n", + __FUNCTION__, gsr_bits); + } + + GCR &= ~(GCR_PRIRDY_IEN|GCR_SECRDY_IEN); + GCR |= GCR_SDONE_IE|GCR_CDONE_IE; +} + +static irqreturn_t pxa2xx_ac97_irq(int irq, void *dev_id, struct pt_regs *regs) +{ + long status; + + status = GSR; + if (status) { + GSR = status; + gsr_bits |= status; + wake_up(&gsr_wq); + +#ifdef CONFIG_PXA27x + /* Although we don't use those we still need to clear them + since they tend to spuriously trigger when MMC is used + (hardware bug? go figure)... */ + MISR = MISR_EOC; + PISR = PISR_EOC; + MCSR = MCSR_EOC; +#endif + + return IRQ_HANDLED; + } + + return IRQ_NONE; +} + +static ac97_bus_ops_t pxa2xx_ac97_ops = { + .read = pxa2xx_ac97_read, + .write = pxa2xx_ac97_write, + .reset = pxa2xx_ac97_reset, +}; + +static pxa2xx_pcm_dma_params_t pxa2xx_ac97_pcm_out = { + .name = "AC97 PCM out", + .dev_addr = __PREG(PCDR), + .drcmr = &DRCMRTXPCDR, + .dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG | + DCMD_BURST32 | DCMD_WIDTH4, +}; + +static pxa2xx_pcm_dma_params_t pxa2xx_ac97_pcm_in = { + .name = "AC97 PCM in", + .dev_addr = __PREG(PCDR), + .drcmr = &DRCMRRXPCDR, + .dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC | + DCMD_BURST32 | DCMD_WIDTH4, +}; + +static snd_pcm_t *pxa2xx_ac97_pcm; +static ac97_t *pxa2xx_ac97_ac97; + +static int pxa2xx_ac97_pcm_startup(snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + pxa2xx_audio_ops_t *platform_ops; + int r; + + runtime->hw.channels_min = 2; + runtime->hw.channels_max = 2; + + r = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ? + AC97_RATES_FRONT_DAC : AC97_RATES_ADC; + runtime->hw.rates = pxa2xx_ac97_ac97->rates[r]; + snd_pcm_limit_hw_rates(runtime); + + platform_ops = substream->pcm->card->dev->platform_data; + if (platform_ops && platform_ops->startup) + return platform_ops->startup(substream, platform_ops->priv); + else + return 0; +} + +static void pxa2xx_ac97_pcm_shutdown(snd_pcm_substream_t *substream) +{ + pxa2xx_audio_ops_t *platform_ops; + + platform_ops = substream->pcm->card->dev->platform_data; + if (platform_ops && platform_ops->shutdown) + platform_ops->shutdown(substream, platform_ops->priv); +} + +static int pxa2xx_ac97_pcm_prepare(snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ? + AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE; + return snd_ac97_set_rate(pxa2xx_ac97_ac97, reg, runtime->rate); +} + +static pxa2xx_pcm_client_t pxa2xx_ac97_pcm_client = { + .playback_params = &pxa2xx_ac97_pcm_out, + .capture_params = &pxa2xx_ac97_pcm_in, + .startup = pxa2xx_ac97_pcm_startup, + .shutdown = pxa2xx_ac97_pcm_shutdown, + .prepare = pxa2xx_ac97_pcm_prepare, +}; + +#ifdef CONFIG_PM + +static int pxa2xx_ac97_do_suspend(snd_card_t *card, unsigned int state) +{ + if (card->power_state != SNDRV_CTL_POWER_D3cold) { + pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data; + snd_pcm_suspend_all(pxa2xx_ac97_pcm); + snd_ac97_suspend(pxa2xx_ac97_ac97); + snd_power_change_state(card, SNDRV_CTL_POWER_D3cold); + if (platform_ops && platform_ops->suspend) + platform_ops->suspend(platform_ops->priv); + GCR |= GCR_ACLINK_OFF; + pxa_set_cken(CKEN2_AC97, 0); + } + + return 0; +} + +static int pxa2xx_ac97_do_resume(snd_card_t *card, unsigned int state) +{ + if (card->power_state != SNDRV_CTL_POWER_D0) { + pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data; + pxa_set_cken(CKEN2_AC97, 1); + if (platform_ops && platform_ops->resume) + platform_ops->resume(platform_ops->priv); + snd_ac97_resume(pxa2xx_ac97_ac97); + snd_power_change_state(card, SNDRV_CTL_POWER_D0); + } + + return 0; +} + +static int pxa2xx_ac97_suspend(struct device *_dev, u32 state, u32 level) +{ + snd_card_t *card = dev_get_drvdata(_dev); + int ret = 0; + + if (card && level == SUSPEND_DISABLE) + ret = pxa2xx_ac97_do_suspend(card, SNDRV_CTL_POWER_D3cold); + + return ret; +} + +static int pxa2xx_ac97_resume(struct device *_dev, u32 level) +{ + snd_card_t *card = dev_get_drvdata(_dev); + int ret = 0; + + if (card && level == RESUME_ENABLE) + ret = pxa2xx_ac97_do_resume(card, SNDRV_CTL_POWER_D0); + + return ret; +} + +#else +#define pxa2xx_ac97_suspend NULL +#define pxa2xx_ac97_resume NULL +#endif + +static int pxa2xx_ac97_probe(struct device *dev) +{ + snd_card_t *card; + ac97_bus_t *ac97_bus; + ac97_template_t ac97_template; + int ret; + + ret = -ENOMEM; + card = snd_card_new(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1, + THIS_MODULE, 0); + if (!card) + goto err; + + card->dev = dev; + strncpy(card->driver, dev->driver->name, sizeof(card->driver)); + + ret = pxa2xx_pcm_new(card, &pxa2xx_ac97_pcm_client, &pxa2xx_ac97_pcm); + if (ret) + goto err; + + ret = request_irq(IRQ_AC97, pxa2xx_ac97_irq, 0, "AC97", NULL); + if (ret < 0) + goto err; + + pxa_gpio_mode(GPIO31_SYNC_AC97_MD); + pxa_gpio_mode(GPIO30_SDATA_OUT_AC97_MD); + pxa_gpio_mode(GPIO28_BITCLK_AC97_MD); + pxa_gpio_mode(GPIO29_SDATA_IN_AC97_MD); +#ifdef CONFIG_PXA27x + /* Use GPIO 113 as AC97 Reset on Bulverde */ + pxa_gpio_mode(113 | GPIO_ALT_FN_2_OUT); +#endif + pxa_set_cken(CKEN2_AC97, 1); + + ret = snd_ac97_bus(card, 0, &pxa2xx_ac97_ops, NULL, &ac97_bus); + if (ret) + goto err; + memset(&ac97_template, 0, sizeof(ac97_template)); + ret = snd_ac97_mixer(ac97_bus, &ac97_template, &pxa2xx_ac97_ac97); + if (ret) + goto err; + + snprintf(card->shortname, sizeof(card->shortname), + "%s", snd_ac97_get_short_name(pxa2xx_ac97_ac97)); + snprintf(card->longname, sizeof(card->longname), + "%s (%s)", dev->driver->name, card->mixername); + + snd_card_set_pm_callback(card, pxa2xx_ac97_do_suspend, + pxa2xx_ac97_do_resume, NULL); + ret = snd_card_register(card); + if (ret == 0) { + dev_set_drvdata(dev, card); + return 0; + } + + err: + if (card) + snd_card_free(card); + if (CKEN & CKEN2_AC97) { + GCR |= GCR_ACLINK_OFF; + free_irq(IRQ_AC97, NULL); + pxa_set_cken(CKEN2_AC97, 0); + } + return ret; +} + +static int pxa2xx_ac97_remove(struct device *dev) +{ + snd_card_t *card = dev_get_drvdata(dev); + + if (card) { + snd_card_free(card); + dev_set_drvdata(dev, NULL); + GCR |= GCR_ACLINK_OFF; + free_irq(IRQ_AC97, NULL); + pxa_set_cken(CKEN2_AC97, 0); + } + + return 0; +} + +static struct device_driver pxa2xx_ac97_driver = { + .name = "pxa2xx-ac97", + .bus = &platform_bus_type, + .probe = pxa2xx_ac97_probe, + .remove = pxa2xx_ac97_remove, + .suspend = pxa2xx_ac97_suspend, + .resume = pxa2xx_ac97_resume, +}; + +static int __init pxa2xx_ac97_init(void) +{ + return driver_register(&pxa2xx_ac97_driver); +} + +static void __exit pxa2xx_ac97_exit(void) +{ + driver_unregister(&pxa2xx_ac97_driver); +} + +module_init(pxa2xx_ac97_init); +module_exit(pxa2xx_ac97_exit); + +MODULE_AUTHOR("Nicolas Pitre"); +MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip"); +MODULE_LICENSE("GPL"); diff --git a/sound/arm/pxa2xx-pcm.c b/sound/arm/pxa2xx-pcm.c new file mode 100644 index 00000000000..b1eb53b02ea --- /dev/null +++ b/sound/arm/pxa2xx-pcm.c @@ -0,0 +1,367 @@ +/* + * linux/sound/arm/pxa2xx-pcm.c -- ALSA PCM interface for the Intel PXA2xx chip + * + * Author: Nicolas Pitre + * Created: Nov 30, 2004 + * Copyright: (C) 2004 MontaVista Software, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/device.h> +#include <linux/slab.h> +#include <linux/dma-mapping.h> + +#include <sound/driver.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> + +#include <asm/dma.h> +#include <asm/hardware.h> +#include <asm/arch/pxa-regs.h> + +#include "pxa2xx-pcm.h" + + +static const snd_pcm_hardware_t pxa2xx_pcm_hardware = { + .info = SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_PAUSE, + .formats = SNDRV_PCM_FMTBIT_S16_LE, + .period_bytes_min = 32, + .period_bytes_max = 8192 - 32, + .periods_min = 1, + .periods_max = PAGE_SIZE/sizeof(pxa_dma_desc), + .buffer_bytes_max = 128 * 1024, + .fifo_size = 32, +}; + +struct pxa2xx_runtime_data { + int dma_ch; + pxa2xx_pcm_dma_params_t *params; + pxa_dma_desc *dma_desc_array; + dma_addr_t dma_desc_array_phys; +}; + +static int pxa2xx_pcm_hw_params(snd_pcm_substream_t *substream, + snd_pcm_hw_params_t *params) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + struct pxa2xx_runtime_data *rtd = runtime->private_data; + size_t totsize = params_buffer_bytes(params); + size_t period = params_period_bytes(params); + pxa_dma_desc *dma_desc; + dma_addr_t dma_buff_phys, next_desc_phys; + + snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer); + runtime->dma_bytes = totsize; + + dma_desc = rtd->dma_desc_array; + next_desc_phys = rtd->dma_desc_array_phys; + dma_buff_phys = runtime->dma_addr; + do { + next_desc_phys += sizeof(pxa_dma_desc); + dma_desc->ddadr = next_desc_phys; + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + dma_desc->dsadr = dma_buff_phys; + dma_desc->dtadr = rtd->params->dev_addr; + } else { + dma_desc->dsadr = rtd->params->dev_addr; + dma_desc->dtadr = dma_buff_phys; + } + if (period > totsize) + period = totsize; + dma_desc->dcmd = rtd->params->dcmd | period | DCMD_ENDIRQEN; + dma_desc++; + dma_buff_phys += period; + } while (totsize -= period); + dma_desc[-1].ddadr = rtd->dma_desc_array_phys; + + return 0; +} + +static int pxa2xx_pcm_hw_free(snd_pcm_substream_t *substream) +{ + struct pxa2xx_runtime_data *rtd = substream->runtime->private_data; + + *rtd->params->drcmr = 0; + snd_pcm_set_runtime_buffer(substream, NULL); + return 0; +} + +static int pxa2xx_pcm_prepare(snd_pcm_substream_t *substream) +{ + pxa2xx_pcm_client_t *client = substream->private_data; + snd_pcm_runtime_t *runtime = substream->runtime; + struct pxa2xx_runtime_data *rtd = runtime->private_data; + + DCSR(rtd->dma_ch) &= ~DCSR_RUN; + DCSR(rtd->dma_ch) = 0; + DCMD(rtd->dma_ch) = 0; + *rtd->params->drcmr = rtd->dma_ch | DRCMR_MAPVLD; + + return client->prepare(substream); +} + +static int pxa2xx_pcm_trigger(snd_pcm_substream_t *substream, int cmd) +{ + struct pxa2xx_runtime_data *rtd = substream->runtime->private_data; + int ret = 0; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + DDADR(rtd->dma_ch) = rtd->dma_desc_array_phys; + DCSR(rtd->dma_ch) = DCSR_RUN; + break; + + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + DCSR(rtd->dma_ch) &= ~DCSR_RUN; + break; + + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + DCSR(rtd->dma_ch) |= DCSR_RUN; + break; + + default: + ret = -EINVAL; + } + + return ret; +} + +static void pxa2xx_pcm_dma_irq(int dma_ch, void *dev_id, struct pt_regs *regs) +{ + snd_pcm_substream_t *substream = dev_id; + struct pxa2xx_runtime_data *rtd = substream->runtime->private_data; + int dcsr; + + dcsr = DCSR(dma_ch); + DCSR(dma_ch) = dcsr & ~DCSR_STOPIRQEN; + + if (dcsr & DCSR_ENDINTR) { + snd_pcm_period_elapsed(substream); + } else { + printk( KERN_ERR "%s: DMA error on channel %d (DCSR=%#x)\n", + rtd->params->name, dma_ch, dcsr ); + snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); + } +} + +static snd_pcm_uframes_t pxa2xx_pcm_pointer(snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + struct pxa2xx_runtime_data *rtd = runtime->private_data; + dma_addr_t ptr = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ? + DSADR(rtd->dma_ch) : DTADR(rtd->dma_ch); + snd_pcm_uframes_t x = bytes_to_frames(runtime, ptr - runtime->dma_addr); + if (x == runtime->buffer_size) + x = 0; + return x; +} + +static int +pxa2xx_pcm_hw_rule_mult32(snd_pcm_hw_params_t *params, snd_pcm_hw_rule_t *rule) +{ + snd_interval_t *i = hw_param_interval(params, rule->var); + int changed = 0; + + if (i->min & 31) { + i->min = (i->min & ~31) + 32; + i->openmin = 0; + changed = 1; + } + + if (i->max & 31) { + i->max &= ~31; + i->openmax = 0; + changed = 1; + } + + return changed; +} + +static int pxa2xx_pcm_open(snd_pcm_substream_t *substream) +{ + pxa2xx_pcm_client_t *client = substream->private_data; + snd_pcm_runtime_t *runtime = substream->runtime; + struct pxa2xx_runtime_data *rtd; + int ret; + + runtime->hw = pxa2xx_pcm_hardware; + + /* + * For mysterious reasons (and despite what the manual says) + * playback samples are lost if the DMA count is not a multiple + * of the DMA burst size. Let's add a rule to enforce that. + */ + ret = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, + pxa2xx_pcm_hw_rule_mult32, NULL, + SNDRV_PCM_HW_PARAM_PERIOD_BYTES, -1); + if (ret) + goto out; + ret = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, + pxa2xx_pcm_hw_rule_mult32, NULL, + SNDRV_PCM_HW_PARAM_BUFFER_BYTES, -1); + if (ret) + goto out; + + ret = -ENOMEM; + rtd = kmalloc(sizeof(*rtd), GFP_KERNEL); + if (!rtd) + goto out; + rtd->dma_desc_array = + dma_alloc_writecombine(substream->pcm->card->dev, PAGE_SIZE, + &rtd->dma_desc_array_phys, GFP_KERNEL); + if (!rtd->dma_desc_array) + goto err1; + + rtd->params = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ? + client->playback_params : client->capture_params; + ret = pxa_request_dma(rtd->params->name, DMA_PRIO_LOW, + pxa2xx_pcm_dma_irq, substream); + if (ret < 0) + goto err2; + rtd->dma_ch = ret; + + runtime->private_data = rtd; + ret = client->startup(substream); + if (!ret) + goto out; + + pxa_free_dma(rtd->dma_ch); + err2: + dma_free_writecombine(substream->pcm->card->dev, PAGE_SIZE, + rtd->dma_desc_array, rtd->dma_desc_array_phys); + err1: + kfree(rtd); + out: + return ret; +} + +static int pxa2xx_pcm_close(snd_pcm_substream_t *substream) +{ + pxa2xx_pcm_client_t *client = substream->private_data; + struct pxa2xx_runtime_data *rtd = substream->runtime->private_data; + + pxa_free_dma(rtd->dma_ch); + client->shutdown(substream); + dma_free_writecombine(substream->pcm->card->dev, PAGE_SIZE, + rtd->dma_desc_array, rtd->dma_desc_array_phys); + kfree(rtd); + return 0; +} + +static int +pxa2xx_pcm_mmap(snd_pcm_substream_t *substream, struct vm_area_struct *vma) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + return dma_mmap_writecombine(substream->pcm->card->dev, vma, + runtime->dma_area, + runtime->dma_addr, + runtime->dma_bytes); +} + +static snd_pcm_ops_t pxa2xx_pcm_ops = { + .open = pxa2xx_pcm_open, + .close = pxa2xx_pcm_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = pxa2xx_pcm_hw_params, + .hw_free = pxa2xx_pcm_hw_free, + .prepare = pxa2xx_pcm_prepare, + .trigger = pxa2xx_pcm_trigger, + .pointer = pxa2xx_pcm_pointer, + .mmap = pxa2xx_pcm_mmap, +}; + +static int pxa2xx_pcm_preallocate_dma_buffer(snd_pcm_t *pcm, int stream) +{ + snd_pcm_substream_t *substream = pcm->streams[stream].substream; + struct snd_dma_buffer *buf = &substream->dma_buffer; + size_t size = pxa2xx_pcm_hardware.buffer_bytes_max; + buf->dev.type = SNDRV_DMA_TYPE_DEV; + buf->dev.dev = pcm->card->dev; + buf->private_data = NULL; + buf->area = dma_alloc_writecombine(pcm->card->dev, size, + &buf->addr, GFP_KERNEL); + if (!buf->area) + return -ENOMEM; + buf->bytes = size; + return 0; +} + +static void pxa2xx_pcm_free_dma_buffers(snd_pcm_t *pcm) +{ + snd_pcm_substream_t *substream; + struct snd_dma_buffer *buf; + int stream; + + for (stream = 0; stream < 2; stream++) { + substream = pcm->streams[stream].substream; + if (!substream) + continue; + buf = &substream->dma_buffer; + if (!buf->area) + continue; + dma_free_writecombine(pcm->card->dev, buf->bytes, + buf->area, buf->addr); + buf->area = NULL; + } +} + +static u64 pxa2xx_pcm_dmamask = 0xffffffff; + +int pxa2xx_pcm_new(snd_card_t *card, pxa2xx_pcm_client_t *client, snd_pcm_t **rpcm) +{ + snd_pcm_t *pcm; + int play = client->playback_params ? 1 : 0; + int capt = client->capture_params ? 1 : 0; + int ret; + + ret = snd_pcm_new(card, "PXA2xx-PCM", 0, play, capt, &pcm); + if (ret) + goto out; + + pcm->private_data = client; + pcm->private_free = pxa2xx_pcm_free_dma_buffers; + + if (!card->dev->dma_mask) + card->dev->dma_mask = &pxa2xx_pcm_dmamask; + if (!card->dev->coherent_dma_mask) + card->dev->coherent_dma_mask = 0xffffffff; + + if (play) { + int stream = SNDRV_PCM_STREAM_PLAYBACK; + snd_pcm_set_ops(pcm, stream, &pxa2xx_pcm_ops); + ret = pxa2xx_pcm_preallocate_dma_buffer(pcm, stream); + if (ret) + goto out; + } + if (capt) { + int stream = SNDRV_PCM_STREAM_CAPTURE; + snd_pcm_set_ops(pcm, stream, &pxa2xx_pcm_ops); + ret = pxa2xx_pcm_preallocate_dma_buffer(pcm, stream); + if (ret) + goto out; + } + + if (rpcm) + *rpcm = pcm; + ret = 0; + + out: + return ret; +} + +EXPORT_SYMBOL(pxa2xx_pcm_new); + +MODULE_AUTHOR("Nicolas Pitre"); +MODULE_DESCRIPTION("Intel PXA2xx PCM DMA module"); +MODULE_LICENSE("GPL"); diff --git a/sound/arm/pxa2xx-pcm.h b/sound/arm/pxa2xx-pcm.h new file mode 100644 index 00000000000..43517597cab --- /dev/null +++ b/sound/arm/pxa2xx-pcm.h @@ -0,0 +1,29 @@ +/* + * linux/sound/arm/pxa2xx-pcm.h -- ALSA PCM interface for the Intel PXA2xx chip + * + * Author: Nicolas Pitre + * Created: Nov 30, 2004 + * Copyright: MontaVista Software, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +typedef struct { + char *name; /* stream identifier */ + u32 dcmd; /* DMA descriptor dcmd field */ + volatile u32 *drcmr; /* the DMA request channel to use */ + u32 dev_addr; /* device physical address for DMA */ +} pxa2xx_pcm_dma_params_t; + +typedef struct { + pxa2xx_pcm_dma_params_t *playback_params; + pxa2xx_pcm_dma_params_t *capture_params; + int (*startup)(snd_pcm_substream_t *); + void (*shutdown)(snd_pcm_substream_t *); + int (*prepare)(snd_pcm_substream_t *); +} pxa2xx_pcm_client_t; + +extern int pxa2xx_pcm_new(snd_card_t *, pxa2xx_pcm_client_t *, snd_pcm_t **); + |