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提交 6c742509 编写于 作者: S Sedji Gaouaou 提交者： Mark Brown
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ASoC: Merge AT91 and AVR32 support into a single atmel architecture 

The Ateml AT91 and AVR32 SoC share common IP for audio and can share the
same driver code using the atmel-ssc API provided for both architectures.
Do this, creating a new unified atmel ASoC architecture to replace the
previous at32 and at91 ones.

[This was contributed as a patch series for reviewability but has been
squashed down to a single commit to help preserve both the history and
bisectability.  A small bugfix from Jukka is included.]
Tested-by: NJukka Hynninen <ext-jukka.hynninen@vaisala.com>
Signed-off-by: NSedji Gaouaou <sedji.gaouaou@atmel.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
上级 dc06102a
展开全部 隐藏空白更改
内联 并排
Showing with 1235 addition and 1672 deletion
sound/soc/Kconfig
浏览文件 @ 6c742509
......@@ -23,8 +23,7 @@ config SND_SOC_AC97_BUS
bool
# All the supported Soc's
source "sound/soc/at32/Kconfig"
source "sound/soc/at91/Kconfig"
source "sound/soc/atmel/Kconfig"
source "sound/soc/au1x/Kconfig"
source "sound/soc/pxa/Kconfig"
source "sound/soc/s3c24xx/Kconfig"
......
sound/soc/Makefile
浏览文件 @ 6c742509
snd-soc-core-objs := soc-core.o soc-dapm.o
obj-$(CONFIG_SND_SOC) += snd-soc-core.o
obj-$(CONFIG_SND_SOC) += codecs/ at32/ at91/ pxa/ s3c24xx/ sh/ fsl/ davinci/
obj-$(CONFIG_SND_SOC) += codecs/ atmel/ pxa/ s3c24xx/ sh/ fsl/ davinci/
obj-$(CONFIG_SND_SOC) += omap/ au1x/ blackfin/
sound/soc/at32/Makefile 已删除 100644 → 0
浏览文件 @ dc06102a
# AT32 Platform Support
snd-soc-at32-objs := at32-pcm.o
snd-soc-at32-ssc-objs := at32-ssc.o
obj-$(CONFIG_SND_AT32_SOC) += snd-soc-at32.o
obj-$(CONFIG_SND_AT32_SOC_SSC) += snd-soc-at32-ssc.o
# AT32 Machine Support
snd-soc-playpaq-objs := playpaq_wm8510.o
obj-$(CONFIG_SND_AT32_SOC_PLAYPAQ) += snd-soc-playpaq.o
sound/soc/at32/at32-pcm.h 已删除 100644 → 0
浏览文件 @ dc06102a
/* sound/soc/at32/at32-pcm.h
* ASoC PCM interface for Atmel AT32 SoC
*
* Copyright (C) 2008 Long Range Systems
* Geoffrey Wossum <gwossum@acm.org>
*
* 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 __SOUND_SOC_AT32_AT32_PCM_H
#define __SOUND_SOC_AT32_AT32_PCM_H __FILE__
#include <linux/atmel-ssc.h>
/*
* Registers and status bits that are required by the PCM driver
* TODO: Is ptcr really used?
*/
struct at32_pdc_regs {
u32 xpr; /* PDC RX/TX pointer */
u32 xcr; /* PDC RX/TX counter */
u32 xnpr; /* PDC next RX/TX pointer */
u32 xncr; /* PDC next RX/TX counter */
u32 ptcr; /* PDC transfer control */
};
/*
* SSC mask info
*/
struct at32_ssc_mask {
u32 ssc_enable; /* SSC RX/TX enable */
u32 ssc_disable; /* SSC RX/TX disable */
u32 ssc_endx; /* SSC ENDTX or ENDRX */
u32 ssc_endbuf; /* SSC TXBUFF or RXBUFF */
u32 pdc_enable; /* PDC RX/TX enable */
u32 pdc_disable; /* PDC RX/TX disable */
};
/*
* This structure, shared between the PCM driver and the interface,
* contains all information required by the PCM driver to perform the
* PDC DMA operation. All fields except dma_intr_handler() are initialized
* by the interface. The dms_intr_handler() pointer is set by the PCM
* driver and called by the interface SSC interrupt handler if it is
* non-NULL.
*/
struct at32_pcm_dma_params {
char *name; /* stream identifier */
int pdc_xfer_size; /* PDC counter increment in bytes */
struct ssc_device *ssc; /* SSC device for stream */
struct at32_pdc_regs *pdc; /* PDC register info */
struct at32_ssc_mask *mask; /* SSC mask info */
struct snd_pcm_substream *substream;
void (*dma_intr_handler) (u32, struct snd_pcm_substream *);
};
/*
* The AT32 ASoC platform driver
*/
extern struct snd_soc_platform at32_soc_platform;
/*
* SSC register access (since ssc_writel() / ssc_readl() require literal name)
*/
#define ssc_readx(base, reg) (__raw_readl((base) + (reg)))
#define ssc_writex(base, reg, value) __raw_writel((value), (base) + (reg))
#endif /* __SOUND_SOC_AT32_AT32_PCM_H */
sound/soc/at32/at32-ssc.c 已删除 100644 → 0
浏览文件 @ dc06102a
此差异已折叠。
sound/soc/at32/at32-ssc.h 已删除 100644 → 0
浏览文件 @ dc06102a
/* sound/soc/at32/at32-ssc.h
* ASoC SSC interface for Atmel AT32 SoC
*
* Copyright (C) 2008 Long Range Systems
* Geoffrey Wossum <gwossum@acm.org>
*
* 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 __SOUND_SOC_AT32_AT32_SSC_H
#define __SOUND_SOC_AT32_AT32_SSC_H __FILE__
#include <linux/types.h>
#include <linux/atmel-ssc.h>
#include "at32-pcm.h"
struct at32_ssc_state {
u32 ssc_cmr;
u32 ssc_rcmr;
u32 ssc_rfmr;
u32 ssc_tcmr;
u32 ssc_tfmr;
u32 ssc_sr;
u32 ssc_imr;
};
struct at32_ssc_info {
char *name;
struct ssc_device *ssc;
spinlock_t lock; /* lock for dir_mask */
unsigned short dir_mask; /* 0=unused, 1=playback, 2=capture */
unsigned short initialized; /* true if SSC has been initialized */
unsigned short daifmt;
unsigned short cmr_div;
unsigned short tcmr_period;
unsigned short rcmr_period;
struct at32_pcm_dma_params *dma_params[2];
struct at32_ssc_state ssc_state;
};
/* SSC divider ids */
#define AT32_SSC_CMR_DIV 0 /* MCK divider for BCLK */
#define AT32_SSC_TCMR_PERIOD 1 /* BCLK divider for transmit FS */
#define AT32_SSC_RCMR_PERIOD 2 /* BCLK divider for receive FS */
extern struct snd_soc_dai at32_ssc_dai[];
#endif /* __SOUND_SOC_AT32_AT32_SSC_H */
sound/soc/at91/Kconfig 已删除 100644 → 0
浏览文件 @ dc06102a
config SND_AT91_SOC
tristate "SoC Audio for the Atmel AT91 System-on-Chip"
depends on ARCH_AT91
help
Say Y or M if you want to add support for codecs attached to
the AT91 SSC interface. You will also need
to select the audio interfaces to support below.
config SND_AT91_SOC_SSC
tristate
sound/soc/at91/Makefile 已删除 100644 → 0
浏览文件 @ dc06102a
# AT91 Platform Support
snd-soc-at91-objs := at91-pcm.o
snd-soc-at91-ssc-objs := at91-ssc.o
obj-$(CONFIG_SND_AT91_SOC) += snd-soc-at91.o
obj-$(CONFIG_SND_AT91_SOC_SSC) += snd-soc-at91-ssc.o
sound/soc/at91/at91-pcm.c 已删除 100644 → 0
浏览文件 @ dc06102a
/*
* at91-pcm.c -- ALSA PCM interface for the Atmel AT91 SoC
*
* Author: Frank Mandarino <fmandarino@endrelia.com>
* Endrelia Technologies Inc.
* Created: Mar 3, 2006
*
* Based on pxa2xx-pcm.c by:
*
* 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/platform_device.h>
#include <linux/slab.h>
#include <linux/dma-mapping.h>
#include <linux/atmel_pdc.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <mach/hardware.h>
#include <mach/at91_ssc.h>
#include "at91-pcm.h"
#if 0
#define DBG(x...) printk(KERN_INFO "at91-pcm: " x)
#else
#define DBG(x...)
#endif
static const struct snd_pcm_hardware at91_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,
.periods_min = 2,
.periods_max = 1024,
.buffer_bytes_max = 32 * 1024,
};
struct at91_runtime_data {
struct at91_pcm_dma_params *params;
dma_addr_t dma_buffer; /* physical address of dma buffer */
dma_addr_t dma_buffer_end; /* first address beyond DMA buffer */
size_t period_size;
dma_addr_t period_ptr; /* physical address of next period */
u32 pdc_xpr_save; /* PDC register save */
u32 pdc_xcr_save;
u32 pdc_xnpr_save;
u32 pdc_xncr_save;
};
static void at91_pcm_dma_irq(u32 ssc_sr,
struct snd_pcm_substream *substream)
{
struct at91_runtime_data *prtd = substream->runtime->private_data;
struct at91_pcm_dma_params *params = prtd->params;
static int count = 0;
count++;
if (ssc_sr & params->mask->ssc_endbuf) {
printk(KERN_WARNING
"at91-pcm: buffer %s on %s (SSC_SR=%#x, count=%d)\n",
substream->stream == SNDRV_PCM_STREAM_PLAYBACK
? "underrun" : "overrun",
params->name, ssc_sr, count);
/* re-start the PDC */
at91_ssc_write(params->ssc_base + ATMEL_PDC_PTCR, params->mask->pdc_disable);
prtd->period_ptr += prtd->period_size;
if (prtd->period_ptr >= prtd->dma_buffer_end) {
prtd->period_ptr = prtd->dma_buffer;
}
at91_ssc_write(params->ssc_base + params->pdc->xpr, prtd->period_ptr);
at91_ssc_write(params->ssc_base + params->pdc->xcr,
prtd->period_size / params->pdc_xfer_size);
at91_ssc_write(params->ssc_base + ATMEL_PDC_PTCR, params->mask->pdc_enable);
}
if (ssc_sr & params->mask->ssc_endx) {
/* Load the PDC next pointer and counter registers */
prtd->period_ptr += prtd->period_size;
if (prtd->period_ptr >= prtd->dma_buffer_end) {
prtd->period_ptr = prtd->dma_buffer;
}
at91_ssc_write(params->ssc_base + params->pdc->xnpr,
prtd->period_ptr);
at91_ssc_write(params->ssc_base + params->pdc->xncr,
prtd->period_size / params->pdc_xfer_size);
}
snd_pcm_period_elapsed(substream);
}
static int at91_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct at91_runtime_data *prtd = runtime->private_data;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
/* this may get called several times by oss emulation
* with different params */
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
runtime->dma_bytes = params_buffer_bytes(params);
prtd->params = rtd->dai->cpu_dai->dma_data;
prtd->params->dma_intr_handler = at91_pcm_dma_irq;
prtd->dma_buffer = runtime->dma_addr;
prtd->dma_buffer_end = runtime->dma_addr + runtime->dma_bytes;
prtd->period_size = params_period_bytes(params);
DBG("hw_params: DMA for %s initialized (dma_bytes=%d, period_size=%d)\n",
prtd->params->name, runtime->dma_bytes, prtd->period_size);
return 0;
}
static int at91_pcm_hw_free(struct snd_pcm_substream *substream)
{
struct at91_runtime_data *prtd = substream->runtime->private_data;
struct at91_pcm_dma_params *params = prtd->params;
if (params != NULL) {
at91_ssc_write(params->ssc_base + ATMEL_PDC_PTCR, params->mask->pdc_disable);
prtd->params->dma_intr_handler = NULL;
}
return 0;
}
static int at91_pcm_prepare(struct snd_pcm_substream *substream)
{
struct at91_runtime_data *prtd = substream->runtime->private_data;
struct at91_pcm_dma_params *params = prtd->params;
at91_ssc_write(params->ssc_base + AT91_SSC_IDR,
params->mask->ssc_endx | params->mask->ssc_endbuf);
at91_ssc_write(params->ssc_base + ATMEL_PDC_PTCR, params->mask->pdc_disable);
return 0;
}
static int at91_pcm_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct at91_runtime_data *prtd = substream->runtime->private_data;
struct at91_pcm_dma_params *params = prtd->params;
int ret = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
prtd->period_ptr = prtd->dma_buffer;
at91_ssc_write(params->ssc_base + params->pdc->xpr, prtd->period_ptr);
at91_ssc_write(params->ssc_base + params->pdc->xcr,
prtd->period_size / params->pdc_xfer_size);
prtd->period_ptr += prtd->period_size;
at91_ssc_write(params->ssc_base + params->pdc->xnpr, prtd->period_ptr);
at91_ssc_write(params->ssc_base + params->pdc->xncr,
prtd->period_size / params->pdc_xfer_size);
DBG("trigger: period_ptr=%lx, xpr=%lx, xcr=%ld, xnpr=%lx, xncr=%ld\n",
(unsigned long) prtd->period_ptr,
at91_ssc_read(params->ssc_base + params->pdc->xpr),
at91_ssc_read(params->ssc_base + params->pdc->xcr),
at91_ssc_read(params->ssc_base + params->pdc->xnpr),
at91_ssc_read(params->ssc_base + params->pdc->xncr));
at91_ssc_write(params->ssc_base + AT91_SSC_IER,
params->mask->ssc_endx | params->mask->ssc_endbuf);
at91_ssc_write(params->ssc_base + ATMEL_PDC_PTCR,
params->mask->pdc_enable);
DBG("sr=%lx imr=%lx\n",
at91_ssc_read(params->ssc_base + AT91_SSC_SR),
at91_ssc_read(params->ssc_base + AT91_SSC_IMR));
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
at91_ssc_write(params->ssc_base + ATMEL_PDC_PTCR, params->mask->pdc_disable);
break;
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
at91_ssc_write(params->ssc_base + ATMEL_PDC_PTCR, params->mask->pdc_enable);
break;
default:
ret = -EINVAL;
}
return ret;
}
static snd_pcm_uframes_t at91_pcm_pointer(
struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct at91_runtime_data *prtd = runtime->private_data;
struct at91_pcm_dma_params *params = prtd->params;
dma_addr_t ptr;
snd_pcm_uframes_t x;
ptr = (dma_addr_t) at91_ssc_read(params->ssc_base + params->pdc->xpr);
x = bytes_to_frames(runtime, ptr - prtd->dma_buffer);
if (x == runtime->buffer_size)
x = 0;
return x;
}
static int at91_pcm_open(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct at91_runtime_data *prtd;
int ret = 0;
snd_soc_set_runtime_hwparams(substream, &at91_pcm_hardware);
/* ensure that buffer size is a multiple of period size */
ret = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
if (ret < 0)
goto out;
prtd = kzalloc(sizeof(struct at91_runtime_data), GFP_KERNEL);
if (prtd == NULL) {
ret = -ENOMEM;
goto out;
}
runtime->private_data = prtd;
out:
return ret;
}
static int at91_pcm_close(struct snd_pcm_substream *substream)
{
struct at91_runtime_data *prtd = substream->runtime->private_data;
kfree(prtd);
return 0;
}
static int at91_pcm_mmap(struct snd_pcm_substream *substream,
struct vm_area_struct *vma)
{
struct snd_pcm_runtime *runtime = substream->runtime;
return dma_mmap_writecombine(substream->pcm->card->dev, vma,
runtime->dma_area,
runtime->dma_addr,
runtime->dma_bytes);
}
struct snd_pcm_ops at91_pcm_ops = {
.open = at91_pcm_open,
.close = at91_pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = at91_pcm_hw_params,
.hw_free = at91_pcm_hw_free,
.prepare = at91_pcm_prepare,
.trigger = at91_pcm_trigger,
.pointer = at91_pcm_pointer,
.mmap = at91_pcm_mmap,
};
static int at91_pcm_preallocate_dma_buffer(struct snd_pcm *pcm,
int stream)
{
struct snd_pcm_substream *substream = pcm->streams[stream].substream;
struct snd_dma_buffer *buf = &substream->dma_buffer;
size_t size = at91_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);
DBG("preallocate_dma_buffer: area=%p, addr=%p, size=%d\n",
(void *) buf->area,
(void *) buf->addr,
size);
if (!buf->area)
return -ENOMEM;
buf->bytes = size;
return 0;
}
static u64 at91_pcm_dmamask = 0xffffffff;
static int at91_pcm_new(struct snd_card *card,
struct snd_soc_dai *dai, struct snd_pcm *pcm)
{
int ret = 0;
if (!card->dev->dma_mask)
card->dev->dma_mask = &at91_pcm_dmamask;
if (!card->dev->coherent_dma_mask)
card->dev->coherent_dma_mask = 0xffffffff;
if (dai->playback.channels_min) {
ret = at91_pcm_preallocate_dma_buffer(pcm,
SNDRV_PCM_STREAM_PLAYBACK);
if (ret)
goto out;
}
if (dai->capture.channels_min) {
ret = at91_pcm_preallocate_dma_buffer(pcm,
SNDRV_PCM_STREAM_CAPTURE);
if (ret)
goto out;
}
out:
return ret;
}
static void at91_pcm_free_dma_buffers(struct snd_pcm *pcm)
{
struct snd_pcm_substream *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;
}
}
#ifdef CONFIG_PM
static int at91_pcm_suspend(struct platform_device *pdev,
struct snd_soc_dai *dai)
{
struct snd_pcm_runtime *runtime = dai->runtime;
struct at91_runtime_data *prtd;
struct at91_pcm_dma_params *params;
if (!runtime)
return 0;
prtd = runtime->private_data;
params = prtd->params;
/* disable the PDC and save the PDC registers */
at91_ssc_write(params->ssc_base + ATMEL_PDC_PTCR, params->mask->pdc_disable);
prtd->pdc_xpr_save = at91_ssc_read(params->ssc_base + params->pdc->xpr);
prtd->pdc_xcr_save = at91_ssc_read(params->ssc_base + params->pdc->xcr);
prtd->pdc_xnpr_save = at91_ssc_read(params->ssc_base + params->pdc->xnpr);
prtd->pdc_xncr_save = at91_ssc_read(params->ssc_base + params->pdc->xncr);
return 0;
}
static int at91_pcm_resume(struct platform_device *pdev,
struct snd_soc_dai *dai)
{
struct snd_pcm_runtime *runtime = dai->runtime;
struct at91_runtime_data *prtd;
struct at91_pcm_dma_params *params;
if (!runtime)
return 0;
prtd = runtime->private_data;
params = prtd->params;
/* restore the PDC registers and enable the PDC */
at91_ssc_write(params->ssc_base + params->pdc->xpr, prtd->pdc_xpr_save);
at91_ssc_write(params->ssc_base + params->pdc->xcr, prtd->pdc_xcr_save);
at91_ssc_write(params->ssc_base + params->pdc->xnpr, prtd->pdc_xnpr_save);
at91_ssc_write(params->ssc_base + params->pdc->xncr, prtd->pdc_xncr_save);
at91_ssc_write(params->ssc_base + ATMEL_PDC_PTCR, params->mask->pdc_enable);
return 0;
}
#else
#define at91_pcm_suspend NULL
#define at91_pcm_resume NULL
#endif
struct snd_soc_platform at91_soc_platform = {
.name = "at91-audio",
.pcm_ops = &at91_pcm_ops,
.pcm_new = at91_pcm_new,
.pcm_free = at91_pcm_free_dma_buffers,
.suspend = at91_pcm_suspend,
.resume = at91_pcm_resume,
};
EXPORT_SYMBOL_GPL(at91_soc_platform);
MODULE_AUTHOR("Frank Mandarino <fmandarino@endrelia.com>");
MODULE_DESCRIPTION("Atmel AT91 PCM module");
MODULE_LICENSE("GPL");
sound/soc/at91/at91-ssc.h 已删除 100644 → 0
浏览文件 @ dc06102a
/*
* at91-ssc.h - ALSA SSC interface for the Atmel AT91 SoC
*
* Author: Frank Mandarino <fmandarino@endrelia.com>
* Endrelia Technologies Inc.
* Created: Jan 9, 2007
*
* 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 _AT91_SSC_H
#define _AT91_SSC_H
/* SSC system clock ids */
#define AT91_SYSCLK_MCK 0 /* SSC uses AT91 MCK as system clock */
/* SSC divider ids */
#define AT91SSC_CMR_DIV 0 /* MCK divider for BCLK */
#define AT91SSC_TCMR_PERIOD 1 /* BCLK divider for transmit FS */
#define AT91SSC_RCMR_PERIOD 2 /* BCLK divider for receive FS */
extern struct snd_soc_dai at91_ssc_dai[];
#endif /* _AT91_SSC_H */
sound/soc/at32/Kconfig → sound/soc/atmel/Kconfig
浏览文件 @ 6c742509
config SND_AT32_SOC
tristate "SoC Audio for the Atmel AT32 System-on-a-Chip"
depends on AVR32 && SND_SOC
help
Say Y or M if you want to add support for codecs attached to
the AT32 SSC interface. You will also need to
to select the audio interfaces to support below.
config SND_AT32_SOC_SSC
tristate
config SND_ATMEL_SOC
tristate "SoC Audio for the Atmel System-on-Chip"
depends on ARCH_AT91 || AVR32
help
Say Y or M if you want to add support for codecs attached to
the ATMEL SSC interface. You will also need
to select the audio interfaces to support below.
config SND_ATMEL_SOC_SSC
tristate
depends on SND_ATMEL_SOC
help
Say Y or M if you want to add support for codecs the
ATMEL SSC interface. You will also needs to select the individual
machine drivers to support below.
config SND_AT91_SOC_SAM9G20_WM8731
tristate "SoC Audio support for WM8731-based At91sam9g20 evaluation board"
depends on ATMEL_SSC && ARCH_AT91SAM9G20 && SND_ATMEL_SOC
select SND_ATMEL_SOC_SSC
select SND_SOC_WM8731
help
Say Y if you want to add support for SoC audio on WM8731-based
AT91sam9g20 evaluation board.
config SND_AT32_SOC_PLAYPAQ
tristate "SoC Audio support for PlayPaq with WM8510"
depends on SND_AT32_SOC && BOARD_PLAYPAQ
select SND_AT32_SOC_SSC
depends on SND_ATMEL_SOC && BOARD_PLAYPAQ
select SND_ATMEL_SOC_SSC
select SND_SOC_WM8510
help
Say Y or M here if you want to add support for SoC audio
on the LRS PlayPaq.
config SND_AT32_SOC_PLAYPAQ_SLAVE
bool "Run CODEC on PlayPaq in slave mode"
depends on SND_AT32_SOC_PLAYPAQ
......
sound/soc/atmel/Makefile 0 → 100644
浏览文件 @ 6c742509
# AT91 Platform Support
snd-soc-atmel-pcm-objs := atmel-pcm.o
snd-soc-atmel_ssc_dai-objs := atmel_ssc_dai.o
obj-$(CONFIG_SND_ATMEL_SOC) += snd-soc-atmel-pcm.o
obj-$(CONFIG_SND_ATMEL_SOC_SSC) += snd-soc-atmel_ssc_dai.o
# AT91 Machine Support
snd-soc-sam9g20-wm8731-objs := sam9g20_wm8731.o
# AT32 Machine Support
snd-soc-playpaq-objs := playpaq_wm8510.o
obj-$(CONFIG_SND_AT91_SOC_SAM9G20_WM8731) += snd-soc-sam9g20-wm8731.o
obj-$(CONFIG_SND_AT32_SOC_PLAYPAQ) += snd-soc-playpaq.o
sound/soc/at91/at91-pcm.h → sound/soc/atmel/atmel-pcm.h
浏览文件 @ 6c742509
/*
* at91-pcm.h - ALSA PCM interface for the Atmel AT91 SoC
* at91-pcm.h - ALSA PCM interface for the Atmel AT91 SoC.
*
* Author: Frank Mandarino <fmandarino@endrelia.com>
* Endrelia Technologies Inc.
* Created: Mar 3, 2006
* Copyright (C) 2005 SAN People
* Copyright (C) 2008 Atmel
*
* Based on pxa2xx-pcm.h by:
* Authors: Sedji Gaouaou <sedji.gaouaou@atmel.com>
*
* Based on at91-pcm. by:
* Frank Mandarino <fmandarino@endrelia.com>
* Copyright 2006 Endrelia Technologies Inc.
*
* Based on pxa2xx-pcm.c by:
*
* Author: Nicolas Pitre
* Created: Nov 30, 2004
* Copyright: MontaVista Software, Inc.
* 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.
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _AT91_PCM_H
#define _AT91_PCM_H
#ifndef _ATMEL_PCM_H
#define _ATMEL_PCM_H
#include <mach/hardware.h>
struct at91_ssc_periph {
void __iomem *base;
u32 pid;
};
#include <linux/atmel-ssc.h>
/*
* Registers and status bits that are required by the PCM driver.
*/
struct at91_pdc_regs {
struct atmel_pdc_regs {
unsigned int xpr; /* PDC recv/trans pointer */
unsigned int xcr; /* PDC recv/trans counter */
unsigned int xnpr; /* PDC next recv/trans pointer */
......@@ -37,7 +47,7 @@ struct at91_pdc_regs {
unsigned int ptcr; /* PDC transfer control */
};
struct at91_ssc_mask {
struct atmel_ssc_mask {
u32 ssc_enable; /* SSC recv/trans enable */
u32 ssc_disable; /* SSC recv/trans disable */
u32 ssc_endx; /* SSC ENDTX or ENDRX */
......@@ -54,19 +64,23 @@ struct at91_ssc_mask {
* driver and called by the interface SSC interrupt handler if it is
* non-NULL.
*/
struct at91_pcm_dma_params {
struct atmel_pcm_dma_params {
char *name; /* stream identifier */
int pdc_xfer_size; /* PDC counter increment in bytes */
void __iomem *ssc_base; /* SSC base address */
struct at91_pdc_regs *pdc; /* PDC receive or transmit registers */
struct at91_ssc_mask *mask;/* SSC & PDC status bits */
struct ssc_device *ssc; /* SSC device for stream */
struct atmel_pdc_regs *pdc; /* PDC receive or transmit registers */
struct atmel_ssc_mask *mask; /* SSC & PDC status bits */
struct snd_pcm_substream *substream;
void (*dma_intr_handler)(u32, struct snd_pcm_substream *);
};
extern struct snd_soc_platform at91_soc_platform;
extern struct snd_soc_platform atmel_soc_platform;
#define at91_ssc_read(a) ((unsigned long) __raw_readl(a))
#define at91_ssc_write(a,v) __raw_writel((v),(a))
/*
* SSC register access (since ssc_writel() / ssc_readl() require literal name)
*/
#define ssc_readx(base, reg) (__raw_readl((base) + (reg)))
#define ssc_writex(base, reg, value) __raw_writel((value), (base) + (reg))
#endif /* _AT91_PCM_H */
#endif /* _ATMEL_PCM_H */
sound/soc/atmel/atmel_ssc_dai.h 0 → 100644
浏览文件 @ 6c742509
/*
* atmel_ssc_dai.h - ALSA SSC interface for the Atmel SoC
*
* Copyright (C) 2005 SAN People
* Copyright (C) 2008 Atmel
*
* Author: Sedji Gaouaou <sedji.gaouaou@atmel.com>
* ATMEL CORP.
*
* Based on at91-ssc.c by
* Frank Mandarino <fmandarino@endrelia.com>
* Based on pxa2xx Platform drivers by
* Liam Girdwood <liam.girdwood@wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _ATMEL_SSC_DAI_H
#define _ATMEL_SSC_DAI_H
#include <linux/types.h>
#include <linux/atmel-ssc.h>
#include "atmel-pcm.h"
/* SSC system clock ids */
#define ATMEL_SYSCLK_MCK 0 /* SSC uses AT91 MCK as system clock */
/* SSC divider ids */
#define ATMEL_SSC_CMR_DIV 0 /* MCK divider for BCLK */
#define ATMEL_SSC_TCMR_PERIOD 1 /* BCLK divider for transmit FS */
#define ATMEL_SSC_RCMR_PERIOD 2 /* BCLK divider for receive FS */
/*
* SSC direction masks
*/
#define SSC_DIR_MASK_UNUSED 0
#define SSC_DIR_MASK_PLAYBACK 1
#define SSC_DIR_MASK_CAPTURE 2
/*
* SSC register values that Atmel left out of <linux/atmel-ssc.h>. These
* are expected to be used with SSC_BF
*/
/* START bit field values */
#define SSC_START_CONTINUOUS 0
#define SSC_START_TX_RX 1
#define SSC_START_LOW_RF 2
#define SSC_START_HIGH_RF 3
#define SSC_START_FALLING_RF 4
#define SSC_START_RISING_RF 5
#define SSC_START_LEVEL_RF 6
#define SSC_START_EDGE_RF 7
#define SSS_START_COMPARE_0 8
/* CKI bit field values */
#define SSC_CKI_FALLING 0
#define SSC_CKI_RISING 1
/* CKO bit field values */
#define SSC_CKO_NONE 0
#define SSC_CKO_CONTINUOUS 1
#define SSC_CKO_TRANSFER 2
/* CKS bit field values */
#define SSC_CKS_DIV 0
#define SSC_CKS_CLOCK 1
#define SSC_CKS_PIN 2
/* FSEDGE bit field values */
#define SSC_FSEDGE_POSITIVE 0
#define SSC_FSEDGE_NEGATIVE 1
/* FSOS bit field values */
#define SSC_FSOS_NONE 0
#define SSC_FSOS_NEGATIVE 1
#define SSC_FSOS_POSITIVE 2
#define SSC_FSOS_LOW 3
#define SSC_FSOS_HIGH 4
#define SSC_FSOS_TOGGLE 5
#define START_DELAY 1
struct atmel_ssc_state {
u32 ssc_cmr;
u32 ssc_rcmr;
u32 ssc_rfmr;
u32 ssc_tcmr;
u32 ssc_tfmr;
u32 ssc_sr;
u32 ssc_imr;
};
struct atmel_ssc_info {
char *name;
struct ssc_device *ssc;
spinlock_t lock; /* lock for dir_mask */
unsigned short dir_mask; /* 0=unused, 1=playback, 2=capture */
unsigned short initialized; /* true if SSC has been initialized */
unsigned short daifmt;
unsigned short cmr_div;
unsigned short tcmr_period;
unsigned short rcmr_period;
struct atmel_pcm_dma_params *dma_params[2];
struct atmel_ssc_state ssc_state;
};
extern struct snd_soc_dai atmel_ssc_dai[];
#endif /* _AT91_SSC_DAI_H */
sound/soc/at32/playpaq_wm8510.c → sound/soc/atmel/playpaq_wm8510.c
浏览文件 @ 6c742509
......@@ -40,8 +40,8 @@
#include <mach/portmux.h>
#include "../codecs/wm8510.h"
#include "at32-pcm.h"
#include "at32-ssc.h"
#include "atmel-pcm.h"
#include "atmel_ssc_dai.h"
/*-------------------------------------------------------------------------*\
......
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