mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-22 09:22:37 +00:00
ASoC: samsung: drop support for legacy S3C24XX DMA API
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Vasily Khoruzhick
Mark Brown
parent
87b132bc03
commit
ae602456e8
@ -13,9 +13,6 @@ config SND_SOC_SAMSUNG
|
||||
config SND_S3C_DMA
|
||||
tristate
|
||||
|
||||
config SND_S3C_DMA_LEGACY
|
||||
tristate
|
||||
|
||||
config SND_S3C24XX_I2S
|
||||
tristate
|
||||
|
||||
|
||||
@ -1,6 +1,5 @@
|
||||
# S3c24XX Platform Support
|
||||
snd-soc-s3c-dma-objs := dmaengine.o
|
||||
snd-soc-s3c-dma-legacy-objs := dma.o
|
||||
snd-soc-idma-objs := idma.o
|
||||
snd-soc-s3c24xx-i2s-objs := s3c24xx-i2s.o
|
||||
snd-soc-s3c2412-i2s-objs := s3c2412-i2s.o
|
||||
@ -11,7 +10,6 @@ snd-soc-pcm-objs := pcm.o
|
||||
snd-soc-i2s-objs := i2s.o
|
||||
|
||||
obj-$(CONFIG_SND_S3C_DMA) += snd-soc-s3c-dma.o
|
||||
obj-$(CONFIG_SND_S3C_DMA_LEGACY) += snd-soc-s3c-dma-legacy.o
|
||||
obj-$(CONFIG_SND_S3C24XX_I2S) += snd-soc-s3c24xx-i2s.o
|
||||
obj-$(CONFIG_SND_SAMSUNG_AC97) += snd-soc-ac97.o
|
||||
obj-$(CONFIG_SND_S3C2412_SOC_I2S) += snd-soc-s3c2412-i2s.o
|
||||
|
||||
@ -1,454 +0,0 @@
|
||||
/*
|
||||
* dma.c -- ALSA Soc Audio Layer
|
||||
*
|
||||
* (c) 2006 Wolfson Microelectronics PLC.
|
||||
* Graeme Gregory graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
|
||||
*
|
||||
* Copyright 2004-2005 Simtec Electronics
|
||||
* http://armlinux.simtec.co.uk/
|
||||
* Ben Dooks <ben@simtec.co.uk>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <linux/slab.h>
|
||||
#include <linux/dma-mapping.h>
|
||||
#include <linux/module.h>
|
||||
|
||||
#include <sound/soc.h>
|
||||
#include <sound/pcm_params.h>
|
||||
|
||||
#include <asm/dma.h>
|
||||
#include <mach/hardware.h>
|
||||
#include <mach/dma.h>
|
||||
|
||||
#include "dma.h"
|
||||
|
||||
#define ST_RUNNING (1<<0)
|
||||
#define ST_OPENED (1<<1)
|
||||
|
||||
static const struct snd_pcm_hardware dma_hardware = {
|
||||
.info = SNDRV_PCM_INFO_INTERLEAVED |
|
||||
SNDRV_PCM_INFO_BLOCK_TRANSFER |
|
||||
SNDRV_PCM_INFO_MMAP |
|
||||
SNDRV_PCM_INFO_MMAP_VALID,
|
||||
.buffer_bytes_max = 128*1024,
|
||||
.period_bytes_min = PAGE_SIZE,
|
||||
.period_bytes_max = PAGE_SIZE*2,
|
||||
.periods_min = 2,
|
||||
.periods_max = 128,
|
||||
.fifo_size = 32,
|
||||
};
|
||||
|
||||
struct runtime_data {
|
||||
spinlock_t lock;
|
||||
int state;
|
||||
unsigned int dma_loaded;
|
||||
unsigned int dma_period;
|
||||
dma_addr_t dma_start;
|
||||
dma_addr_t dma_pos;
|
||||
dma_addr_t dma_end;
|
||||
struct s3c_dma_params *params;
|
||||
};
|
||||
|
||||
static void audio_buffdone(void *data);
|
||||
|
||||
/* dma_enqueue
|
||||
*
|
||||
* place a dma buffer onto the queue for the dma system
|
||||
* to handle.
|
||||
*/
|
||||
static void dma_enqueue(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct runtime_data *prtd = substream->runtime->private_data;
|
||||
dma_addr_t pos = prtd->dma_pos;
|
||||
unsigned int limit;
|
||||
struct samsung_dma_prep dma_info;
|
||||
|
||||
pr_debug("Entered %s\n", __func__);
|
||||
|
||||
limit = (prtd->dma_end - prtd->dma_start) / prtd->dma_period;
|
||||
|
||||
pr_debug("%s: loaded %d, limit %d\n",
|
||||
__func__, prtd->dma_loaded, limit);
|
||||
|
||||
dma_info.cap = (samsung_dma_has_circular() ? DMA_CYCLIC : DMA_SLAVE);
|
||||
dma_info.direction =
|
||||
(substream->stream == SNDRV_PCM_STREAM_PLAYBACK
|
||||
? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM);
|
||||
dma_info.fp = audio_buffdone;
|
||||
dma_info.fp_param = substream;
|
||||
dma_info.period = prtd->dma_period;
|
||||
dma_info.len = prtd->dma_period*limit;
|
||||
|
||||
if (dma_info.cap == DMA_CYCLIC) {
|
||||
dma_info.buf = pos;
|
||||
prtd->params->ops->prepare(prtd->params->ch, &dma_info);
|
||||
prtd->dma_loaded += limit;
|
||||
return;
|
||||
}
|
||||
|
||||
while (prtd->dma_loaded < limit) {
|
||||
pr_debug("dma_loaded: %d\n", prtd->dma_loaded);
|
||||
|
||||
if ((pos + dma_info.period) > prtd->dma_end) {
|
||||
dma_info.period = prtd->dma_end - pos;
|
||||
pr_debug("%s: corrected dma len %ld\n",
|
||||
__func__, dma_info.period);
|
||||
}
|
||||
|
||||
dma_info.buf = pos;
|
||||
prtd->params->ops->prepare(prtd->params->ch, &dma_info);
|
||||
|
||||
prtd->dma_loaded++;
|
||||
pos += prtd->dma_period;
|
||||
if (pos >= prtd->dma_end)
|
||||
pos = prtd->dma_start;
|
||||
}
|
||||
|
||||
prtd->dma_pos = pos;
|
||||
}
|
||||
|
||||
static void audio_buffdone(void *data)
|
||||
{
|
||||
struct snd_pcm_substream *substream = data;
|
||||
struct runtime_data *prtd = substream->runtime->private_data;
|
||||
|
||||
pr_debug("Entered %s\n", __func__);
|
||||
|
||||
if (prtd->state & ST_RUNNING) {
|
||||
prtd->dma_pos += prtd->dma_period;
|
||||
if (prtd->dma_pos >= prtd->dma_end)
|
||||
prtd->dma_pos = prtd->dma_start;
|
||||
|
||||
if (substream)
|
||||
snd_pcm_period_elapsed(substream);
|
||||
|
||||
spin_lock(&prtd->lock);
|
||||
if (!samsung_dma_has_circular()) {
|
||||
prtd->dma_loaded--;
|
||||
dma_enqueue(substream);
|
||||
}
|
||||
spin_unlock(&prtd->lock);
|
||||
}
|
||||
}
|
||||
|
||||
static int dma_hw_params(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_hw_params *params)
|
||||
{
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
struct runtime_data *prtd = runtime->private_data;
|
||||
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
||||
unsigned long totbytes = params_buffer_bytes(params);
|
||||
struct s3c_dma_params *dma =
|
||||
snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
|
||||
struct samsung_dma_req req;
|
||||
struct samsung_dma_config config;
|
||||
|
||||
pr_debug("Entered %s\n", __func__);
|
||||
|
||||
/* return if this is a bufferless transfer e.g.
|
||||
* codec <--> BT codec or GSM modem -- lg FIXME */
|
||||
if (!dma)
|
||||
return 0;
|
||||
|
||||
/* this may get called several times by oss emulation
|
||||
* with different params -HW */
|
||||
if (prtd->params == NULL) {
|
||||
/* prepare DMA */
|
||||
prtd->params = dma;
|
||||
|
||||
pr_debug("params %p, client %p, channel %d\n", prtd->params,
|
||||
prtd->params->client, prtd->params->channel);
|
||||
|
||||
prtd->params->ops = samsung_dma_get_ops();
|
||||
|
||||
req.cap = (samsung_dma_has_circular() ?
|
||||
DMA_CYCLIC : DMA_SLAVE);
|
||||
req.client = prtd->params->client;
|
||||
config.direction =
|
||||
(substream->stream == SNDRV_PCM_STREAM_PLAYBACK
|
||||
? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM);
|
||||
config.width = prtd->params->dma_size;
|
||||
config.fifo = prtd->params->dma_addr;
|
||||
prtd->params->ch = prtd->params->ops->request(
|
||||
prtd->params->channel, &req, rtd->cpu_dai->dev,
|
||||
prtd->params->ch_name);
|
||||
if (!prtd->params->ch) {
|
||||
pr_err("Failed to allocate DMA channel\n");
|
||||
return -ENXIO;
|
||||
}
|
||||
prtd->params->ops->config(prtd->params->ch, &config);
|
||||
}
|
||||
|
||||
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
|
||||
|
||||
runtime->dma_bytes = totbytes;
|
||||
|
||||
spin_lock_irq(&prtd->lock);
|
||||
prtd->dma_loaded = 0;
|
||||
prtd->dma_period = params_period_bytes(params);
|
||||
prtd->dma_start = runtime->dma_addr;
|
||||
prtd->dma_pos = prtd->dma_start;
|
||||
prtd->dma_end = prtd->dma_start + totbytes;
|
||||
spin_unlock_irq(&prtd->lock);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int dma_hw_free(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct runtime_data *prtd = substream->runtime->private_data;
|
||||
|
||||
pr_debug("Entered %s\n", __func__);
|
||||
|
||||
snd_pcm_set_runtime_buffer(substream, NULL);
|
||||
|
||||
if (prtd->params) {
|
||||
prtd->params->ops->flush(prtd->params->ch);
|
||||
prtd->params->ops->release(prtd->params->ch,
|
||||
prtd->params->client);
|
||||
prtd->params = NULL;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int dma_prepare(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct runtime_data *prtd = substream->runtime->private_data;
|
||||
int ret = 0;
|
||||
|
||||
pr_debug("Entered %s\n", __func__);
|
||||
|
||||
/* return if this is a bufferless transfer e.g.
|
||||
* codec <--> BT codec or GSM modem -- lg FIXME */
|
||||
if (!prtd->params)
|
||||
return 0;
|
||||
|
||||
/* flush the DMA channel */
|
||||
prtd->params->ops->flush(prtd->params->ch);
|
||||
|
||||
prtd->dma_loaded = 0;
|
||||
prtd->dma_pos = prtd->dma_start;
|
||||
|
||||
/* enqueue dma buffers */
|
||||
dma_enqueue(substream);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int dma_trigger(struct snd_pcm_substream *substream, int cmd)
|
||||
{
|
||||
struct runtime_data *prtd = substream->runtime->private_data;
|
||||
int ret = 0;
|
||||
|
||||
pr_debug("Entered %s\n", __func__);
|
||||
|
||||
spin_lock(&prtd->lock);
|
||||
|
||||
switch (cmd) {
|
||||
case SNDRV_PCM_TRIGGER_START:
|
||||
prtd->state |= ST_RUNNING;
|
||||
prtd->params->ops->trigger(prtd->params->ch);
|
||||
break;
|
||||
|
||||
case SNDRV_PCM_TRIGGER_STOP:
|
||||
prtd->state &= ~ST_RUNNING;
|
||||
prtd->params->ops->stop(prtd->params->ch);
|
||||
break;
|
||||
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
break;
|
||||
}
|
||||
|
||||
spin_unlock(&prtd->lock);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static snd_pcm_uframes_t
|
||||
dma_pointer(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
struct runtime_data *prtd = runtime->private_data;
|
||||
unsigned long res;
|
||||
|
||||
pr_debug("Entered %s\n", __func__);
|
||||
|
||||
res = prtd->dma_pos - prtd->dma_start;
|
||||
|
||||
pr_debug("Pointer offset: %lu\n", res);
|
||||
|
||||
/* we seem to be getting the odd error from the pcm library due
|
||||
* to out-of-bounds pointers. this is maybe due to the dma engine
|
||||
* not having loaded the new values for the channel before being
|
||||
* called... (todo - fix )
|
||||
*/
|
||||
|
||||
if (res >= snd_pcm_lib_buffer_bytes(substream)) {
|
||||
if (res == snd_pcm_lib_buffer_bytes(substream))
|
||||
res = 0;
|
||||
}
|
||||
|
||||
return bytes_to_frames(substream->runtime, res);
|
||||
}
|
||||
|
||||
static int dma_open(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
struct runtime_data *prtd;
|
||||
|
||||
pr_debug("Entered %s\n", __func__);
|
||||
|
||||
snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
|
||||
snd_soc_set_runtime_hwparams(substream, &dma_hardware);
|
||||
|
||||
prtd = kzalloc(sizeof(struct runtime_data), GFP_KERNEL);
|
||||
if (prtd == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
spin_lock_init(&prtd->lock);
|
||||
|
||||
runtime->private_data = prtd;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int dma_close(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
struct runtime_data *prtd = runtime->private_data;
|
||||
|
||||
pr_debug("Entered %s\n", __func__);
|
||||
|
||||
if (!prtd)
|
||||
pr_debug("dma_close called with prtd == NULL\n");
|
||||
|
||||
kfree(prtd);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int dma_mmap(struct snd_pcm_substream *substream,
|
||||
struct vm_area_struct *vma)
|
||||
{
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
|
||||
pr_debug("Entered %s\n", __func__);
|
||||
|
||||
return dma_mmap_writecombine(substream->pcm->card->dev, vma,
|
||||
runtime->dma_area,
|
||||
runtime->dma_addr,
|
||||
runtime->dma_bytes);
|
||||
}
|
||||
|
||||
static struct snd_pcm_ops dma_ops = {
|
||||
.open = dma_open,
|
||||
.close = dma_close,
|
||||
.ioctl = snd_pcm_lib_ioctl,
|
||||
.hw_params = dma_hw_params,
|
||||
.hw_free = dma_hw_free,
|
||||
.prepare = dma_prepare,
|
||||
.trigger = dma_trigger,
|
||||
.pointer = dma_pointer,
|
||||
.mmap = dma_mmap,
|
||||
};
|
||||
|
||||
static int 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 = dma_hardware.buffer_bytes_max;
|
||||
|
||||
pr_debug("Entered %s\n", __func__);
|
||||
|
||||
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 dma_free_dma_buffers(struct snd_pcm *pcm)
|
||||
{
|
||||
struct snd_pcm_substream *substream;
|
||||
struct snd_dma_buffer *buf;
|
||||
int stream;
|
||||
|
||||
pr_debug("Entered %s\n", __func__);
|
||||
|
||||
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 int dma_new(struct snd_soc_pcm_runtime *rtd)
|
||||
{
|
||||
struct snd_card *card = rtd->card->snd_card;
|
||||
struct snd_pcm *pcm = rtd->pcm;
|
||||
int ret;
|
||||
|
||||
pr_debug("Entered %s\n", __func__);
|
||||
|
||||
ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) {
|
||||
ret = preallocate_dma_buffer(pcm,
|
||||
SNDRV_PCM_STREAM_PLAYBACK);
|
||||
if (ret)
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
|
||||
ret = preallocate_dma_buffer(pcm,
|
||||
SNDRV_PCM_STREAM_CAPTURE);
|
||||
if (ret)
|
||||
goto out;
|
||||
}
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static struct snd_soc_platform_driver samsung_asoc_platform = {
|
||||
.ops = &dma_ops,
|
||||
.pcm_new = dma_new,
|
||||
.pcm_free = dma_free_dma_buffers,
|
||||
};
|
||||
|
||||
void samsung_asoc_init_dma_data(struct snd_soc_dai *dai,
|
||||
struct s3c_dma_params *playback,
|
||||
struct s3c_dma_params *capture)
|
||||
{
|
||||
snd_soc_dai_init_dma_data(dai, playback, capture);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(samsung_asoc_init_dma_data);
|
||||
|
||||
int samsung_asoc_dma_platform_register(struct device *dev)
|
||||
{
|
||||
return devm_snd_soc_register_platform(dev, &samsung_asoc_platform);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register);
|
||||
|
||||
MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
|
||||
MODULE_DESCRIPTION("Samsung ASoC DMA Driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Reference in New Issue
Block a user