From 871480933a1c28f8a9fed4c4d34d06c439a7a422 Mon Sep 17 00:00:00 2001 From: Srikant Patnaik Date: Sun, 11 Jan 2015 12:28:04 +0530 Subject: Moved, renamed, and deleted files The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure. --- ANDROID_3.4.5/sound/soc/jz4740/jz4740-pcm.c | 362 ---------------------------- 1 file changed, 362 deletions(-) delete mode 100644 ANDROID_3.4.5/sound/soc/jz4740/jz4740-pcm.c (limited to 'ANDROID_3.4.5/sound/soc/jz4740/jz4740-pcm.c') diff --git a/ANDROID_3.4.5/sound/soc/jz4740/jz4740-pcm.c b/ANDROID_3.4.5/sound/soc/jz4740/jz4740-pcm.c deleted file mode 100644 index 9b8cf256..00000000 --- a/ANDROID_3.4.5/sound/soc/jz4740/jz4740-pcm.c +++ /dev/null @@ -1,362 +0,0 @@ -/* - * Copyright (C) 2010, Lars-Peter Clausen - * - * 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. - * - * 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., - * 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ - -#include -#include -#include -#include -#include -#include - -#include - -#include -#include -#include -#include - -#include -#include "jz4740-pcm.h" - -struct jz4740_runtime_data { - unsigned long dma_period; - dma_addr_t dma_start; - dma_addr_t dma_pos; - dma_addr_t dma_end; - - struct jz4740_dma_chan *dma; - - dma_addr_t fifo_addr; -}; - -/* identify hardware playback capabilities */ -static const struct snd_pcm_hardware jz4740_pcm_hardware = { - .info = SNDRV_PCM_INFO_MMAP | - SNDRV_PCM_INFO_MMAP_VALID | - SNDRV_PCM_INFO_INTERLEAVED | - SNDRV_PCM_INFO_BLOCK_TRANSFER, - .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8, - - .rates = SNDRV_PCM_RATE_8000_48000, - .channels_min = 1, - .channels_max = 2, - .period_bytes_min = 16, - .period_bytes_max = 2 * PAGE_SIZE, - .periods_min = 2, - .periods_max = 128, - .buffer_bytes_max = 128 * 2 * PAGE_SIZE, - .fifo_size = 32, -}; - -static void jz4740_pcm_start_transfer(struct jz4740_runtime_data *prtd, - struct snd_pcm_substream *substream) -{ - unsigned long count; - - if (prtd->dma_pos == prtd->dma_end) - prtd->dma_pos = prtd->dma_start; - - if (prtd->dma_pos + prtd->dma_period > prtd->dma_end) - count = prtd->dma_end - prtd->dma_pos; - else - count = prtd->dma_period; - - jz4740_dma_disable(prtd->dma); - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - jz4740_dma_set_src_addr(prtd->dma, prtd->dma_pos); - jz4740_dma_set_dst_addr(prtd->dma, prtd->fifo_addr); - } else { - jz4740_dma_set_src_addr(prtd->dma, prtd->fifo_addr); - jz4740_dma_set_dst_addr(prtd->dma, prtd->dma_pos); - } - - jz4740_dma_set_transfer_count(prtd->dma, count); - - prtd->dma_pos += count; - - jz4740_dma_enable(prtd->dma); -} - -static void jz4740_pcm_dma_transfer_done(struct jz4740_dma_chan *dma, int err, - void *dev_id) -{ - struct snd_pcm_substream *substream = dev_id; - struct snd_pcm_runtime *runtime = substream->runtime; - struct jz4740_runtime_data *prtd = runtime->private_data; - - snd_pcm_period_elapsed(substream); - - jz4740_pcm_start_transfer(prtd, substream); -} - -static int jz4740_pcm_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *params) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - struct jz4740_runtime_data *prtd = runtime->private_data; - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct jz4740_pcm_config *config; - - config = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); - - if (!config) - return 0; - - if (!prtd->dma) { - if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) - prtd->dma = jz4740_dma_request(substream, "PCM Capture"); - else - prtd->dma = jz4740_dma_request(substream, "PCM Playback"); - } - - if (!prtd->dma) - return -EBUSY; - - jz4740_dma_configure(prtd->dma, &config->dma_config); - prtd->fifo_addr = config->fifo_addr; - - jz4740_dma_set_complete_cb(prtd->dma, jz4740_pcm_dma_transfer_done); - - snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer); - runtime->dma_bytes = params_buffer_bytes(params); - - 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 + runtime->dma_bytes; - - return 0; -} - -static int jz4740_pcm_hw_free(struct snd_pcm_substream *substream) -{ - struct jz4740_runtime_data *prtd = substream->runtime->private_data; - - snd_pcm_set_runtime_buffer(substream, NULL); - if (prtd->dma) { - jz4740_dma_free(prtd->dma); - prtd->dma = NULL; - } - - return 0; -} - -static int jz4740_pcm_prepare(struct snd_pcm_substream *substream) -{ - struct jz4740_runtime_data *prtd = substream->runtime->private_data; - - if (!prtd->dma) - return -EBUSY; - - prtd->dma_pos = prtd->dma_start; - - return 0; -} - -static int jz4740_pcm_trigger(struct snd_pcm_substream *substream, int cmd) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - struct jz4740_runtime_data *prtd = runtime->private_data; - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - case SNDRV_PCM_TRIGGER_RESUME: - case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: - jz4740_pcm_start_transfer(prtd, substream); - break; - case SNDRV_PCM_TRIGGER_STOP: - case SNDRV_PCM_TRIGGER_SUSPEND: - case SNDRV_PCM_TRIGGER_PAUSE_PUSH: - jz4740_dma_disable(prtd->dma); - break; - default: - break; - } - - return 0; -} - -static snd_pcm_uframes_t jz4740_pcm_pointer(struct snd_pcm_substream *substream) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - struct jz4740_runtime_data *prtd = runtime->private_data; - unsigned long byte_offset; - snd_pcm_uframes_t offset; - struct jz4740_dma_chan *dma = prtd->dma; - - /* prtd->dma_pos points to the end of the current transfer. So by - * subtracting prdt->dma_start we get the offset to the end of the - * current period in bytes. By subtracting the residue of the transfer - * we get the current offset in bytes. */ - byte_offset = prtd->dma_pos - prtd->dma_start; - byte_offset -= jz4740_dma_get_residue(dma); - - offset = bytes_to_frames(runtime, byte_offset); - if (offset >= runtime->buffer_size) - offset = 0; - - return offset; -} - -static int jz4740_pcm_open(struct snd_pcm_substream *substream) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - struct jz4740_runtime_data *prtd; - - prtd = kzalloc(sizeof(*prtd), GFP_KERNEL); - if (prtd == NULL) - return -ENOMEM; - - snd_soc_set_runtime_hwparams(substream, &jz4740_pcm_hardware); - - runtime->private_data = prtd; - - return 0; -} - -static int jz4740_pcm_close(struct snd_pcm_substream *substream) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - struct jz4740_runtime_data *prtd = runtime->private_data; - - kfree(prtd); - - return 0; -} - -static int jz4740_pcm_mmap(struct snd_pcm_substream *substream, - struct vm_area_struct *vma) -{ - return remap_pfn_range(vma, vma->vm_start, - substream->dma_buffer.addr >> PAGE_SHIFT, - vma->vm_end - vma->vm_start, vma->vm_page_prot); -} - -static struct snd_pcm_ops jz4740_pcm_ops = { - .open = jz4740_pcm_open, - .close = jz4740_pcm_close, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = jz4740_pcm_hw_params, - .hw_free = jz4740_pcm_hw_free, - .prepare = jz4740_pcm_prepare, - .trigger = jz4740_pcm_trigger, - .pointer = jz4740_pcm_pointer, - .mmap = jz4740_pcm_mmap, -}; - -static int jz4740_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 = jz4740_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_noncoherent(pcm->card->dev, size, - &buf->addr, GFP_KERNEL); - if (!buf->area) - return -ENOMEM; - - buf->bytes = size; - - return 0; -} - -static void jz4740_pcm_free(struct snd_pcm *pcm) -{ - struct snd_pcm_substream *substream; - struct snd_dma_buffer *buf; - int stream; - - for (stream = 0; stream < SNDRV_PCM_STREAM_LAST; ++stream) { - substream = pcm->streams[stream].substream; - if (!substream) - continue; - - buf = &substream->dma_buffer; - if (!buf->area) - continue; - - dma_free_noncoherent(pcm->card->dev, buf->bytes, buf->area, - buf->addr); - buf->area = NULL; - } -} - -static u64 jz4740_pcm_dmamask = DMA_BIT_MASK(32); - -static int jz4740_pcm_new(struct snd_soc_pcm_runtime *rtd) -{ - struct snd_card *card = rtd->card->snd_card; - struct snd_pcm *pcm = rtd->pcm; - int ret = 0; - - if (!card->dev->dma_mask) - card->dev->dma_mask = &jz4740_pcm_dmamask; - - if (!card->dev->coherent_dma_mask) - card->dev->coherent_dma_mask = DMA_BIT_MASK(32); - - if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) { - ret = jz4740_pcm_preallocate_dma_buffer(pcm, - SNDRV_PCM_STREAM_PLAYBACK); - if (ret) - goto err; - } - - if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) { - ret = jz4740_pcm_preallocate_dma_buffer(pcm, - SNDRV_PCM_STREAM_CAPTURE); - if (ret) - goto err; - } - -err: - return ret; -} - -static struct snd_soc_platform_driver jz4740_soc_platform = { - .ops = &jz4740_pcm_ops, - .pcm_new = jz4740_pcm_new, - .pcm_free = jz4740_pcm_free, -}; - -static int __devinit jz4740_pcm_probe(struct platform_device *pdev) -{ - return snd_soc_register_platform(&pdev->dev, &jz4740_soc_platform); -} - -static int __devexit jz4740_pcm_remove(struct platform_device *pdev) -{ - snd_soc_unregister_platform(&pdev->dev); - return 0; -} - -static struct platform_driver jz4740_pcm_driver = { - .probe = jz4740_pcm_probe, - .remove = __devexit_p(jz4740_pcm_remove), - .driver = { - .name = "jz4740-pcm-audio", - .owner = THIS_MODULE, - }, -}; - -module_platform_driver(jz4740_pcm_driver); - -MODULE_AUTHOR("Lars-Peter Clausen "); -MODULE_DESCRIPTION("Ingenic SoC JZ4740 PCM driver"); -MODULE_LICENSE("GPL"); -- cgit