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Diffstat (limited to 'sound/soc/blackfin/bf5xx-i2s-pcm.c')
-rw-r--r--sound/soc/blackfin/bf5xx-i2s-pcm.c373
1 files changed, 0 insertions, 373 deletions
diff --git a/sound/soc/blackfin/bf5xx-i2s-pcm.c b/sound/soc/blackfin/bf5xx-i2s-pcm.c
deleted file mode 100644
index 51cae76f14e6..000000000000
--- a/sound/soc/blackfin/bf5xx-i2s-pcm.c
+++ /dev/null
@@ -1,373 +0,0 @@
-/*
- * File: sound/soc/blackfin/bf5xx-i2s-pcm.c
- * Author: Cliff Cai <Cliff.Cai@analog.com>
- *
- * Created: Tue June 06 2008
- * Description: DMA driver for i2s codec
- *
- * Modified:
- * Copyright 2008 Analog Devices Inc.
- *
- * Bugs: Enter bugs at http://blackfin.uclinux.org/
- *
- * 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, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/dma-mapping.h>
-#include <linux/gfp.h>
-
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/soc.h>
-
-#include <asm/dma.h>
-
-#include "bf5xx-sport.h"
-#include "bf5xx-i2s-pcm.h"
-
-static void bf5xx_dma_irq(void *data)
-{
- struct snd_pcm_substream *pcm = data;
- snd_pcm_period_elapsed(pcm);
-}
-
-static const struct snd_pcm_hardware bf5xx_pcm_hardware = {
- .info = SNDRV_PCM_INFO_INTERLEAVED |
- SNDRV_PCM_INFO_MMAP_VALID |
- SNDRV_PCM_INFO_BLOCK_TRANSFER,
- .period_bytes_min = 32,
- .period_bytes_max = 0x10000,
- .periods_min = 1,
- .periods_max = PAGE_SIZE/32,
- .buffer_bytes_max = 0x20000, /* 128 kbytes */
- .fifo_size = 16,
-};
-
-static int bf5xx_pcm_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- unsigned int buffer_size = params_buffer_bytes(params);
- struct bf5xx_i2s_pcm_data *dma_data;
-
- dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
-
- if (dma_data->tdm_mode)
- buffer_size = buffer_size / params_channels(params) * 8;
-
- return snd_pcm_lib_malloc_pages(substream, buffer_size);
-}
-
-static int bf5xx_pcm_hw_free(struct snd_pcm_substream *substream)
-{
- snd_pcm_lib_free_pages(substream);
-
- return 0;
-}
-
-static int bf5xx_pcm_prepare(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct sport_device *sport = runtime->private_data;
- int period_bytes = frames_to_bytes(runtime, runtime->period_size);
- struct bf5xx_i2s_pcm_data *dma_data;
-
- dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
-
- if (dma_data->tdm_mode)
- period_bytes = period_bytes / runtime->channels * 8;
-
- pr_debug("%s enter\n", __func__);
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- sport_set_tx_callback(sport, bf5xx_dma_irq, substream);
- sport_config_tx_dma(sport, runtime->dma_area,
- runtime->periods, period_bytes);
- } else {
- sport_set_rx_callback(sport, bf5xx_dma_irq, substream);
- sport_config_rx_dma(sport, runtime->dma_area,
- runtime->periods, period_bytes);
- }
-
- return 0;
-}
-
-static int bf5xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct sport_device *sport = runtime->private_data;
- int ret = 0;
-
- pr_debug("%s enter\n", __func__);
- switch (cmd) {
- case SNDRV_PCM_TRIGGER_START:
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- sport_tx_start(sport);
- else
- sport_rx_start(sport);
- break;
- case SNDRV_PCM_TRIGGER_STOP:
- case SNDRV_PCM_TRIGGER_SUSPEND:
- case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- sport_tx_stop(sport);
- else
- sport_rx_stop(sport);
- break;
- default:
- ret = -EINVAL;
- }
-
- return ret;
-}
-
-static snd_pcm_uframes_t bf5xx_pcm_pointer(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct sport_device *sport = runtime->private_data;
- unsigned int diff;
- snd_pcm_uframes_t frames;
- struct bf5xx_i2s_pcm_data *dma_data;
-
- dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
-
- pr_debug("%s enter\n", __func__);
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- diff = sport_curr_offset_tx(sport);
- } else {
- diff = sport_curr_offset_rx(sport);
- }
-
- /*
- * TX at least can report one frame beyond the end of the
- * buffer if we hit the wraparound case - clamp to within the
- * buffer as the ALSA APIs require.
- */
- if (diff == snd_pcm_lib_buffer_bytes(substream))
- diff = 0;
-
- frames = bytes_to_frames(substream->runtime, diff);
- if (dma_data->tdm_mode)
- frames = frames * runtime->channels / 8;
-
- return frames;
-}
-
-static int bf5xx_pcm_open(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
- struct sport_device *sport_handle = snd_soc_dai_get_drvdata(cpu_dai);
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct snd_dma_buffer *buf = &substream->dma_buffer;
- struct bf5xx_i2s_pcm_data *dma_data;
- int ret;
-
- dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
-
- pr_debug("%s enter\n", __func__);
-
- snd_soc_set_runtime_hwparams(substream, &bf5xx_pcm_hardware);
- if (dma_data->tdm_mode)
- runtime->hw.buffer_bytes_max /= 4;
- else
- runtime->hw.info |= SNDRV_PCM_INFO_MMAP;
-
- ret = snd_pcm_hw_constraint_integer(runtime,
- SNDRV_PCM_HW_PARAM_PERIODS);
- if (ret < 0)
- goto out;
-
- if (sport_handle != NULL) {
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- sport_handle->tx_buf = buf->area;
- else
- sport_handle->rx_buf = buf->area;
-
- runtime->private_data = sport_handle;
- } else {
- pr_err("sport_handle is NULL\n");
- return -1;
- }
- return 0;
-
- out:
- return ret;
-}
-
-static int bf5xx_pcm_mmap(struct snd_pcm_substream *substream,
- struct vm_area_struct *vma)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- size_t size = vma->vm_end - vma->vm_start;
- vma->vm_start = (unsigned long)runtime->dma_area;
- vma->vm_end = vma->vm_start + size;
- vma->vm_flags |= VM_SHARED;
-
- return 0 ;
-}
-
-static int bf5xx_pcm_copy(struct snd_pcm_substream *substream,
- int channel, unsigned long pos,
- void *buf, unsigned long count)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_pcm_runtime *runtime = substream->runtime;
- unsigned int sample_size = runtime->sample_bits / 8;
- struct bf5xx_i2s_pcm_data *dma_data;
- unsigned int i;
- void *src, *dst;
-
- dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
-
- if (dma_data->tdm_mode) {
- pos = bytes_to_frames(runtime, pos);
- count = bytes_to_frames(runtime, count);
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- src = buf;
- dst = runtime->dma_area;
- dst += pos * sample_size * 8;
-
- while (count--) {
- for (i = 0; i < runtime->channels; i++) {
- memcpy(dst + dma_data->map[i] *
- sample_size, src, sample_size);
- src += sample_size;
- }
- dst += 8 * sample_size;
- }
- } else {
- src = runtime->dma_area;
- src += pos * sample_size * 8;
- dst = buf;
-
- while (count--) {
- for (i = 0; i < runtime->channels; i++) {
- memcpy(dst, src + dma_data->map[i] *
- sample_size, sample_size);
- dst += sample_size;
- }
- src += 8 * sample_size;
- }
- }
- } else {
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- src = buf;
- dst = runtime->dma_area;
- dst += pos;
- } else {
- src = runtime->dma_area;
- src += pos;
- dst = buf;
- }
-
- memcpy(dst, src, count);
- }
-
- return 0;
-}
-
-static int bf5xx_pcm_copy_user(struct snd_pcm_substream *substream,
- int channel, unsigned long pos,
- void __user *buf, unsigned long count)
-{
- return bf5xx_pcm_copy(substream, channel, pos, (void *)buf, count);
-}
-
-static int bf5xx_pcm_silence(struct snd_pcm_substream *substream,
- int channel, unsigned long pos,
- unsigned long count)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_pcm_runtime *runtime = substream->runtime;
- unsigned int sample_size = runtime->sample_bits / 8;
- void *buf = runtime->dma_area;
- struct bf5xx_i2s_pcm_data *dma_data;
- unsigned int offset, samples;
-
- dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
-
- if (dma_data->tdm_mode) {
- offset = bytes_to_frames(runtime, pos) * 8 * sample_size;
- samples = bytes_to_frames(runtime, count) * 8;
- } else {
- offset = pos;
- samples = bytes_to_samples(runtime, count);
- }
-
- snd_pcm_format_set_silence(runtime->format, buf + offset, samples);
-
- return 0;
-}
-
-static const struct snd_pcm_ops bf5xx_pcm_i2s_ops = {
- .open = bf5xx_pcm_open,
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = bf5xx_pcm_hw_params,
- .hw_free = bf5xx_pcm_hw_free,
- .prepare = bf5xx_pcm_prepare,
- .trigger = bf5xx_pcm_trigger,
- .pointer = bf5xx_pcm_pointer,
- .mmap = bf5xx_pcm_mmap,
- .copy_user = bf5xx_pcm_copy_user,
- .copy_kernel = bf5xx_pcm_copy,
- .fill_silence = bf5xx_pcm_silence,
-};
-
-static int bf5xx_pcm_i2s_new(struct snd_soc_pcm_runtime *rtd)
-{
- struct snd_card *card = rtd->card->snd_card;
- size_t size = bf5xx_pcm_hardware.buffer_bytes_max;
- int ret;
-
- pr_debug("%s enter\n", __func__);
- ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
- if (ret)
- return ret;
-
- return snd_pcm_lib_preallocate_pages_for_all(rtd->pcm,
- SNDRV_DMA_TYPE_DEV, card->dev, size, size);
-}
-
-static struct snd_soc_platform_driver bf5xx_i2s_soc_platform = {
- .ops = &bf5xx_pcm_i2s_ops,
- .pcm_new = bf5xx_pcm_i2s_new,
-};
-
-static int bfin_i2s_soc_platform_probe(struct platform_device *pdev)
-{
- return devm_snd_soc_register_platform(&pdev->dev,
- &bf5xx_i2s_soc_platform);
-}
-
-static struct platform_driver bfin_i2s_pcm_driver = {
- .driver = {
- .name = "bfin-i2s-pcm-audio",
- },
-
- .probe = bfin_i2s_soc_platform_probe,
-};
-
-module_platform_driver(bfin_i2s_pcm_driver);
-
-MODULE_AUTHOR("Cliff Cai");
-MODULE_DESCRIPTION("ADI Blackfin I2S PCM DMA module");
-MODULE_LICENSE("GPL");
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-11-25 05:46:29 +0000