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r: 47220
b: refs/heads/master
c: eaff2ae
h: refs/heads/master
v: v3
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Philipp Zabel authored and Jaroslav Kysela committed Feb 9, 2007
1 parent cdd0e64 commit 61d5fef
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2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: c8044274c7f1e269975b2bd55d057ceb7708e929
refs/heads/master: eaff2ae702f937020bfde96eea552caae3815784
200 changes: 82 additions & 118 deletions trunk/sound/soc/pxa/pxa2xx-i2s.c
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Expand Up @@ -29,109 +29,18 @@
#include <asm/arch/audio.h>

#include "pxa2xx-pcm.h"

/* used to disable sysclk if external crystal is used */
static int extclk;
module_param(extclk, int, 0);
MODULE_PARM_DESC(extclk, "set to 1 to disable pxa2xx i2s sysclk");
#include "pxa2xx-i2s.h"

struct pxa_i2s_port {
u32 sadiv;
u32 sacr0;
u32 sacr1;
u32 saimr;
int master;
u32 fmt;
};
static struct pxa_i2s_port pxa_i2s;

#define PXA_I2S_DAIFMT \
(SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF)

#define PXA_I2S_DIR \
(SND_SOC_DAIDIR_PLAYBACK | SND_SOC_DAIDIR_CAPTURE)

#define PXA_I2S_RATES \
(SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_16000 | \
SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)

/* priv is divider */
static struct snd_soc_dai_mode pxa2xx_i2s_modes[] = {
/* pxa2xx I2S frame and clock master modes */
{
.fmt = PXA_I2S_DAIFMT | SND_SOC_DAIFMT_CBS_CFS,
.pcmfmt = SNDRV_PCM_FMTBIT_S16_LE,
.pcmrate = SNDRV_PCM_RATE_8000,
.pcmdir = PXA_I2S_DIR,
.flags = SND_SOC_DAI_BFS_DIV,
.fs = 256,
.bfs = SND_SOC_FSBD(4),
.priv = 0x48,
},
{
.fmt = PXA_I2S_DAIFMT | SND_SOC_DAIFMT_CBS_CFS,
.pcmfmt = SNDRV_PCM_FMTBIT_S16_LE,
.pcmrate = SNDRV_PCM_RATE_11025,
.pcmdir = PXA_I2S_DIR,
.flags = SND_SOC_DAI_BFS_DIV,
.fs = 256,
.bfs = SND_SOC_FSBD(4),
.priv = 0x34,
},
{
.fmt = PXA_I2S_DAIFMT | SND_SOC_DAIFMT_CBS_CFS,
.pcmfmt = SNDRV_PCM_FMTBIT_S16_LE,
.pcmrate = SNDRV_PCM_RATE_16000,
.pcmdir = PXA_I2S_DIR,
.flags = SND_SOC_DAI_BFS_DIV,
.fs = 256,
.bfs = SND_SOC_FSBD(4),
.priv = 0x24,
},
{
.fmt = PXA_I2S_DAIFMT | SND_SOC_DAIFMT_CBS_CFS,
.pcmfmt = SNDRV_PCM_FMTBIT_S16_LE,
.pcmrate = SNDRV_PCM_RATE_22050,
.pcmdir = PXA_I2S_DIR,
.flags = SND_SOC_DAI_BFS_DIV,
.fs = 256,
.bfs = SND_SOC_FSBD(4),
.priv = 0x1a,
},
{
.fmt = PXA_I2S_DAIFMT | SND_SOC_DAIFMT_CBS_CFS,
.pcmfmt = SNDRV_PCM_FMTBIT_S16_LE,
.pcmrate = SNDRV_PCM_RATE_44100,
.pcmdir = PXA_I2S_DIR,
.flags = SND_SOC_DAI_BFS_DIV,
.fs = 256,
.bfs = SND_SOC_FSBD(4),
.priv = 0xd,
},
{
.fmt = PXA_I2S_DAIFMT | SND_SOC_DAIFMT_CBS_CFS,
.pcmfmt = SNDRV_PCM_FMTBIT_S16_LE,
.pcmrate = SNDRV_PCM_RATE_48000,
.pcmdir = PXA_I2S_DIR,
.flags = SND_SOC_DAI_BFS_DIV,
.fs = 256,
.bfs = SND_SOC_FSBD(4),
.priv = 0xc,
},

/* pxa2xx I2S frame master and clock slave mode */
{
.fmt = PXA_I2S_DAIFMT | SND_SOC_DAIFMT_CBM_CFS,
.pcmfmt = SNDRV_PCM_FMTBIT_S16_LE,
.pcmrate = PXA_I2S_RATES,
.pcmdir = PXA_I2S_DIR,
.fs = SND_SOC_FS_ALL,
.flags = SND_SOC_DAI_BFS_RATE,
.bfs = 64,
.priv = 0x48,
},
};

static struct pxa2xx_pcm_dma_params pxa2xx_i2s_pcm_stereo_out = {
.name = "I2S PCM Stereo out",
.dev_addr = __PREG(SADR),
Expand Down Expand Up @@ -171,8 +80,9 @@ static struct pxa2xx_gpio gpio_bus[] = {
static int pxa2xx_i2s_startup(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;

if (!rtd->cpu_dai->active) {
if (!cpu_dai->active) {
SACR0 |= SACR0_RST;
SACR0 = 0;
}
Expand All @@ -191,18 +101,50 @@ static int pxa_i2s_wait(void)
return 0;
}

static int pxa2xx_i2s_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
static int pxa2xx_i2s_set_dai_fmt(struct snd_soc_cpu_dai *cpu_dai,
unsigned int fmt)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
/* interface format */
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
pxa_i2s.fmt = 0;
break;
case SND_SOC_DAIFMT_LEFT_J:
pxa_i2s.fmt = SACR1_AMSL;
break;
}

pxa_i2s.master = 0;
if (rtd->cpu_dai->dai_runtime.fmt & SND_SOC_DAIFMT_CBS_CFS)
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
pxa_i2s.master = 1;
break;
case SND_SOC_DAIFMT_CBM_CFS:
pxa_i2s.master = 0;
break;
default:
break;
}
return 0;
}

if (pxa_i2s.master && !extclk)
static int pxa2xx_i2s_set_dai_sysclk(struct snd_soc_cpu_dai *cpu_dai,
int clk_id, unsigned int freq, int dir)
{
if (clk_id != PXA2XX_I2S_SYSCLK)
return -ENODEV;

if (pxa_i2s.master && dir == SND_SOC_CLOCK_OUT)
pxa_gpio_mode(gpio_bus[pxa_i2s.master].sys);

return 0;
}

static int pxa2xx_i2s_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;

pxa_gpio_mode(gpio_bus[pxa_i2s.master].rx);
pxa_gpio_mode(gpio_bus[pxa_i2s.master].tx);
pxa_gpio_mode(gpio_bus[pxa_i2s.master].frm);
Expand All @@ -211,9 +153,9 @@ static int pxa2xx_i2s_hw_params(struct snd_pcm_substream *substream,
pxa_i2s_wait();

if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
rtd->cpu_dai->dma_data = &pxa2xx_i2s_pcm_stereo_out;
cpu_dai->dma_data = &pxa2xx_i2s_pcm_stereo_out;
else
rtd->cpu_dai->dma_data = &pxa2xx_i2s_pcm_stereo_in;
cpu_dai->dma_data = &pxa2xx_i2s_pcm_stereo_in;

/* is port used by another stream */
if (!(SACR0 & SACR0_ENB)) {
Expand All @@ -224,16 +166,37 @@ static int pxa2xx_i2s_hw_params(struct snd_pcm_substream *substream,
SACR0 |= SACR0_BCKD;

SACR0 |= SACR0_RFTH(14) | SACR0_TFTH(1);

if (rtd->cpu_dai->dai_runtime.fmt & SND_SOC_DAIFMT_LEFT_J)
SACR1 |= SACR1_AMSL;
SACR1 |= pxa_i2s.fmt;
}
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
SAIMR |= SAIMR_TFS;
else
SAIMR |= SAIMR_RFS;

SADIV = rtd->cpu_dai->dai_runtime.priv;
switch (params_rate(params)) {
case 8000:
SADIV = 0x48;
break;
case 11025:
SADIV = 0x34;
break;
case 16000:
SADIV = 0x24;
break;
case 22050:
SADIV = 0x1a;
break;
case 44100:
SADIV = 0xd;
break;
case 48000:
SADIV = 0xc;
break;
case 96000: /* not in manual and possibly slightly inaccurate */
SADIV = 0x6;
break;
}

return 0;
}

Expand Down Expand Up @@ -316,34 +279,35 @@ static int pxa2xx_i2s_resume(struct platform_device *pdev,
#define pxa2xx_i2s_resume NULL
#endif

/* pxa2xx I2S sysclock is always 256 FS */
static unsigned int pxa_i2s_config_sysclk(struct snd_soc_cpu_dai *iface,
struct snd_soc_clock_info *info, unsigned int clk)
{
return info->rate << 8;
}
#define PXA2XX_I2S_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000)

struct snd_soc_cpu_dai pxa_i2s_dai = {
.name = "pxa2xx-i2s",
.id = 0,
.type = SND_SOC_DAI_I2S,
.suspend = pxa2xx_i2s_suspend,
.resume = pxa2xx_i2s_resume,
.config_sysclk = pxa_i2s_config_sysclk,
.playback = {
.channels_min = 2,
.channels_max = 2,},
.channels_max = 2,
.rates = PXA2XX_I2S_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
.capture = {
.channels_min = 2,
.channels_max = 2,},
.channels_max = 2,
.rates = PXA2XX_I2S_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
.ops = {
.startup = pxa2xx_i2s_startup,
.shutdown = pxa2xx_i2s_shutdown,
.trigger = pxa2xx_i2s_trigger,
.hw_params = pxa2xx_i2s_hw_params,},
.caps = {
.num_modes = ARRAY_SIZE(pxa2xx_i2s_modes),
.mode = pxa2xx_i2s_modes,},
.dai_ops = {
.set_fmt = pxa2xx_i2s_set_dai_fmt,
.set_sysclk = pxa2xx_i2s_set_dai_sysclk,
},
};

EXPORT_SYMBOL_GPL(pxa_i2s_dai);
Expand Down
20 changes: 20 additions & 0 deletions trunk/sound/soc/pxa/pxa2xx-i2s.h
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Original file line number Diff line number Diff line change
@@ -0,0 +1,20 @@
/*
* linux/sound/arm/pxa2xx-i2s.h
*
* 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 _PXA2XX_I2S_H
#define _PXA2XX_I2S_H

/* pxa2xx DAI ID's */
#define PXA2XX_DAI_I2S 0

/* I2S clock */
#define PXA2XX_I2S_SYSCLK 0

extern struct snd_soc_cpu_dai pxa_i2s_dai;

#endif

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