#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/dmaengine.h>
-#include <linux/dma/pxa-dma.h>
+#include <linux/dma-mapping.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <mach/regs-ac97.h>
#include <mach/audio.h>
-#include "pxa2xx-pcm.h"
-
static void pxa2xx_ac97_legacy_reset(struct snd_ac97 *ac97)
{
if (!pxa2xx_ac97_try_cold_reset())
.reset = pxa2xx_ac97_legacy_reset,
};
-static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_out = {
- .addr = __PREG(PCDR),
- .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
- .chan_name = "pcm_pcm_stereo_out",
- .maxburst = 32,
-};
-
-static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_in = {
- .addr = __PREG(PCDR),
- .addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
- .chan_name = "pcm_pcm_stereo_in",
- .maxburst = 32,
-};
-
static struct snd_pcm *pxa2xx_ac97_pcm;
static struct snd_ac97 *pxa2xx_ac97_ac97;
-static int pxa2xx_ac97_pcm_startup(struct snd_pcm_substream *substream)
+static int pxa2xx_ac97_pcm_open(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
pxa2xx_audio_ops_t *platform_ops;
- int r;
+ int ret, i;
+
+ ret = __pxa2xx_pcm_open(substream);
+ if (ret)
+ return ret;
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];
+ i = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
+ AC97_RATES_FRONT_DAC : AC97_RATES_ADC;
+ runtime->hw.rates = pxa2xx_ac97_ac97->rates[i];
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;
+ platform_ops = substream->pcm->card->dev->platform_data;
+ if (platform_ops && platform_ops->startup) {
+ ret = platform_ops->startup(substream, platform_ops->priv);
+ if (ret < 0)
+ __pxa2xx_pcm_close(substream);
+ }
+
+ return ret;
}
-static void pxa2xx_ac97_pcm_shutdown(struct snd_pcm_substream *substream)
+static int pxa2xx_ac97_pcm_close(struct snd_pcm_substream *substream)
{
pxa2xx_audio_ops_t *platform_ops;
- platform_ops = substream->pcm->card->dev->platform_data;
+ platform_ops = substream->pcm->card->dev->platform_data;
if (platform_ops && platform_ops->shutdown)
platform_ops->shutdown(substream, platform_ops->priv);
+
+ return 0;
}
static int pxa2xx_ac97_pcm_prepare(struct snd_pcm_substream *substream)
struct snd_pcm_runtime *runtime = substream->runtime;
int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE;
+ int ret;
+
+ ret = __pxa2xx_pcm_prepare(substream);
+ if (ret < 0)
+ return ret;
+
return snd_ac97_set_rate(pxa2xx_ac97_ac97, reg, runtime->rate);
}
-static struct pxa2xx_pcm_client 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_SLEEP
static int pxa2xx_ac97_do_suspend(struct snd_card *card)
static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops, pxa2xx_ac97_suspend, pxa2xx_ac97_resume);
#endif
+static const struct snd_pcm_ops pxa2xx_pcm_ops = {
+ .open = pxa2xx_ac97_pcm_open,
+ .close = pxa2xx_ac97_pcm_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = __pxa2xx_pcm_hw_params,
+ .hw_free = __pxa2xx_pcm_hw_free,
+ .prepare = pxa2xx_ac97_pcm_prepare,
+ .trigger = pxa2xx_pcm_trigger,
+ .pointer = pxa2xx_pcm_pointer,
+ .mmap = pxa2xx_pcm_mmap,
+};
+
+
+static int pxa2xx_ac97_pcm_new(struct snd_card *card)
+{
+ struct snd_pcm *pcm;
+ int stream, ret;
+
+ ret = snd_pcm_new(card, "PXA2xx-PCM", 0, 1, 1, &pcm);
+ if (ret)
+ goto out;
+
+ pcm->private_free = pxa2xx_pcm_free_dma_buffers;
+
+ ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
+ if (ret)
+ goto out;
+
+ 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;
+
+ 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;
+
+ pxa2xx_ac97_pcm = pcm;
+ ret = 0;
+
+ out:
+ return ret;
+}
+
static int pxa2xx_ac97_probe(struct platform_device *dev)
{
struct snd_card *card;
strlcpy(card->driver, dev->dev.driver->name, sizeof(card->driver));
- ret = pxa2xx_pcm_new(card, &pxa2xx_ac97_pcm_client, &pxa2xx_ac97_pcm);
+ ret = pxa2xx_ac97_pcm_new(card);
if (ret)
goto err;
+++ /dev/null
-/*
- * 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/dma-mapping.h>
-#include <linux/dmaengine.h>
-
-#include <mach/dma.h>
-
-#include <sound/core.h>
-#include <sound/pxa2xx-lib.h>
-#include <sound/dmaengine_pcm.h>
-
-#include "pxa2xx-pcm.h"
-
-static int pxa2xx_pcm_prepare(struct snd_pcm_substream *substream)
-{
- struct pxa2xx_pcm_client *client = substream->private_data;
-
- __pxa2xx_pcm_prepare(substream);
-
- return client->prepare(substream);
-}
-
-static int pxa2xx_pcm_open(struct snd_pcm_substream *substream)
-{
- struct pxa2xx_pcm_client *client = substream->private_data;
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct pxa2xx_runtime_data *rtd;
- int ret;
-
- ret = __pxa2xx_pcm_open(substream);
- if (ret)
- goto out;
-
- rtd = runtime->private_data;
-
- rtd->params = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
- client->playback_params : client->capture_params;
-
- ret = client->startup(substream);
- if (!ret)
- goto err2;
-
- return 0;
-
- err2:
- __pxa2xx_pcm_close(substream);
- out:
- return ret;
-}
-
-static int pxa2xx_pcm_close(struct snd_pcm_substream *substream)
-{
- struct pxa2xx_pcm_client *client = substream->private_data;
-
- client->shutdown(substream);
-
- return __pxa2xx_pcm_close(substream);
-}
-
-static const struct snd_pcm_ops 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,
-};
-
-int pxa2xx_pcm_new(struct snd_card *card, struct pxa2xx_pcm_client *client,
- struct snd_pcm **rpcm)
-{
- struct snd_pcm *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;
-
- ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
- if (ret)
- goto out;
-
- 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");
projects / linux.git / commitdiff