Merge branch 'topic/asoc' into to-push

1 files changed, 0 insertions, 492 deletions

diff --git a/sound/soc/at32/at32-pcm.c b/sound/soc/at32/at32-pcm.c
deleted file mode 100644
index c83584f989a9..000000000000
--- a/sound/soc/at32/at32-pcm.c
+++ /dev/null
@@ -1,492 +0,0 @@
-/* sound/soc/at32/at32-pcm.c
- * 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.
- *
- * Note that this is basically a port of the sound/soc/at91-pcm.c to
- * the AVR32 kernel.  Thanks to Frank Mandarino for that code.
- */
-
-#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 "at32-pcm.h"
-
-
-
-/*--------------------------------------------------------------------------*\
- * Hardware definition
-\*--------------------------------------------------------------------------*/
-/* TODO: These values were taken from the AT91 platform driver, check
- *	 them against real values for AT32
- */
-static const struct snd_pcm_hardware at32_pcm_hardware = {
-	.info = (SNDRV_PCM_INFO_MMAP |
-		 SNDRV_PCM_INFO_MMAP_VALID |
-		 SNDRV_PCM_INFO_INTERLEAVED |
-		 SNDRV_PCM_INFO_BLOCK_TRANSFER |
-		 SNDRV_PCM_INFO_PAUSE),
-
-	.formats = SNDRV_PCM_FMTBIT_S16,
-	.period_bytes_min = 32,
-	.period_bytes_max = 8192,	/* 512 frames * 16 bytes / frame */
-	.periods_min = 2,
-	.periods_max = 1024,
-	.buffer_bytes_max = 32 * 1024,
-};
-
-
-
-/*--------------------------------------------------------------------------*\
- * Data types
-\*--------------------------------------------------------------------------*/
-struct at32_runtime_data {
-	struct at32_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 */
-	int periods;		/* period index of period_ptr */
-
-	/* Save PDC registers (for power management) */
-	u32 pdc_xpr_save;
-	u32 pdc_xcr_save;
-	u32 pdc_xnpr_save;
-	u32 pdc_xncr_save;
-};
-
-
-
-/*--------------------------------------------------------------------------*\
- * Helper functions
-\*--------------------------------------------------------------------------*/
-static int at32_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream)
-{
-	struct snd_pcm_substream *substream = pcm->streams[stream].substream;
-	struct snd_dma_buffer *dmabuf = &substream->dma_buffer;
-	size_t size = at32_pcm_hardware.buffer_bytes_max;
-
-	dmabuf->dev.type = SNDRV_DMA_TYPE_DEV;
-	dmabuf->dev.dev = pcm->card->dev;
-	dmabuf->private_data = NULL;
-	dmabuf->area = dma_alloc_coherent(pcm->card->dev, size,
-					  &dmabuf->addr, GFP_KERNEL);
-	pr_debug("at32_pcm: preallocate_dma_buffer: "
-		 "area=%p, addr=%p, size=%ld\n",
-		 (void *)dmabuf->area, (void *)dmabuf->addr, size);
-
-	if (!dmabuf->area)
-		return -ENOMEM;
-
-	dmabuf->bytes = size;
-	return 0;
-}
-
-
-
-/*--------------------------------------------------------------------------*\
- * ISR
-\*--------------------------------------------------------------------------*/
-static void at32_pcm_dma_irq(u32 ssc_sr, struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *rtd = substream->runtime;
-	struct at32_runtime_data *prtd = rtd->private_data;
-	struct at32_pcm_dma_params *params = prtd->params;
-	static int count;
-
-	count++;
-	if (ssc_sr & params->mask->ssc_endbuf) {
-		pr_warning("at32-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 */
-		ssc_writex(params->ssc->regs, 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;
-
-
-		ssc_writex(params->ssc->regs, params->pdc->xpr,
-			   prtd->period_ptr);
-		ssc_writex(params->ssc->regs, params->pdc->xcr,
-			   prtd->period_size / params->pdc_xfer_size);
-		ssc_writex(params->ssc->regs, 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;
-		ssc_writex(params->ssc->regs, params->pdc->xnpr,
-			   prtd->period_ptr);
-		ssc_writex(params->ssc->regs, params->pdc->xncr,
-			   prtd->period_size / params->pdc_xfer_size);
-	}
-
-
-	snd_pcm_period_elapsed(substream);
-}
-
-
-
-/*--------------------------------------------------------------------------*\
- * PCM operations
-\*--------------------------------------------------------------------------*/
-static int at32_pcm_hw_params(struct snd_pcm_substream *substream,
-			      struct snd_pcm_hw_params *params)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct at32_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 = at32_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);
-
-	pr_debug("hw_params: DMA for %s initialized "
-		 "(dma_bytes=%ld, period_size=%ld)\n",
-		 prtd->params->name, runtime->dma_bytes, prtd->period_size);
-
-	return 0;
-}
-
-
-
-static int at32_pcm_hw_free(struct snd_pcm_substream *substream)
-{
-	struct at32_runtime_data *prtd = substream->runtime->private_data;
-	struct at32_pcm_dma_params *params = prtd->params;
-
-	if (params != NULL) {
-		ssc_writex(params->ssc->regs, SSC_PDC_PTCR,
-			   params->mask->pdc_disable);
-		prtd->params->dma_intr_handler = NULL;
-	}
-
-	return 0;
-}
-
-
-
-static int at32_pcm_prepare(struct snd_pcm_substream *substream)
-{
-	struct at32_runtime_data *prtd = substream->runtime->private_data;
-	struct at32_pcm_dma_params *params = prtd->params;
-
-	ssc_writex(params->ssc->regs, SSC_IDR,
-		   params->mask->ssc_endx | params->mask->ssc_endbuf);
-	ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR,
-		   params->mask->pdc_disable);
-
-	return 0;
-}
-
-
-static int at32_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
-{
-	struct snd_pcm_runtime *rtd = substream->runtime;
-	struct at32_runtime_data *prtd = rtd->private_data;
-	struct at32_pcm_dma_params *params = prtd->params;
-	int ret = 0;
-
-	pr_debug("at32_pcm_trigger: buffer_size = %ld, "
-		 "dma_area = %p, dma_bytes = %ld\n",
-		 rtd->buffer_size, rtd->dma_area, rtd->dma_bytes);
-
-	switch (cmd) {
-	case SNDRV_PCM_TRIGGER_START:
-		prtd->period_ptr = prtd->dma_buffer;
-
-		ssc_writex(params->ssc->regs, params->pdc->xpr,
-			   prtd->period_ptr);
-		ssc_writex(params->ssc->regs, params->pdc->xcr,
-			   prtd->period_size / params->pdc_xfer_size);
-
-		prtd->period_ptr += prtd->period_size;
-		ssc_writex(params->ssc->regs, params->pdc->xnpr,
-			   prtd->period_ptr);
-		ssc_writex(params->ssc->regs, params->pdc->xncr,
-			   prtd->period_size / params->pdc_xfer_size);
-
-		pr_debug("trigger: period_ptr=%lx, xpr=%x, "
-			 "xcr=%d, xnpr=%x, xncr=%d\n",
-			 (unsigned long)prtd->period_ptr,
-			 ssc_readx(params->ssc->regs, params->pdc->xpr),
-			 ssc_readx(params->ssc->regs, params->pdc->xcr),
-			 ssc_readx(params->ssc->regs, params->pdc->xnpr),
-			 ssc_readx(params->ssc->regs, params->pdc->xncr));
-
-		ssc_writex(params->ssc->regs, SSC_IER,
-			   params->mask->ssc_endx | params->mask->ssc_endbuf);
-		ssc_writex(params->ssc->regs, SSC_PDC_PTCR,
-			   params->mask->pdc_enable);
-
-		pr_debug("sr=%x, imr=%x\n",
-			 ssc_readx(params->ssc->regs, SSC_SR),
-			 ssc_readx(params->ssc->regs, SSC_IER));
-		break;		/* SNDRV_PCM_TRIGGER_START */
-
-
-
-	case SNDRV_PCM_TRIGGER_STOP:
-	case SNDRV_PCM_TRIGGER_SUSPEND:
-	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-		ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR,
-			   params->mask->pdc_disable);
-		break;
-
-
-	case SNDRV_PCM_TRIGGER_RESUME:
-	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
-		ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR,
-			   params->mask->pdc_enable);
-		break;
-
-	default:
-		ret = -EINVAL;
-	}
-
-	return ret;
-}
-
-
-
-static snd_pcm_uframes_t at32_pcm_pointer(struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct at32_runtime_data *prtd = runtime->private_data;
-	struct at32_pcm_dma_params *params = prtd->params;
-	dma_addr_t ptr;
-	snd_pcm_uframes_t x;
-
-	ptr = (dma_addr_t) ssc_readx(params->ssc->regs, params->pdc->xpr);
-	x = bytes_to_frames(runtime, ptr - prtd->dma_buffer);
-
-	if (x == runtime->buffer_size)
-		x = 0;
-
-	return x;
-}
-
-
-
-static int at32_pcm_open(struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct at32_runtime_data *prtd;
-	int ret = 0;
-
-	snd_soc_set_runtime_hwparams(substream, &at32_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(*prtd), GFP_KERNEL);
-	if (prtd == NULL) {
-		ret = -ENOMEM;
-		goto out;
-	}
-	runtime->private_data = prtd;
-
-
-out:
-	return ret;
-}
-
-
-
-static int at32_pcm_close(struct snd_pcm_substream *substream)
-{
-	struct at32_runtime_data *prtd = substream->runtime->private_data;
-
-	kfree(prtd);
-	return 0;
-}
-
-
-static int at32_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 at32_pcm_ops = {
-	.open = at32_pcm_open,
-	.close = at32_pcm_close,
-	.ioctl = snd_pcm_lib_ioctl,
-	.hw_params = at32_pcm_hw_params,
-	.hw_free = at32_pcm_hw_free,
-	.prepare = at32_pcm_prepare,
-	.trigger = at32_pcm_trigger,
-	.pointer = at32_pcm_pointer,
-	.mmap = at32_pcm_mmap,
-};
-
-
-
-/*--------------------------------------------------------------------------*\
- * ASoC platform driver
-\*--------------------------------------------------------------------------*/
-static u64 at32_pcm_dmamask = 0xffffffff;
-
-static int at32_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 = &at32_pcm_dmamask;
-	if (!card->dev->coherent_dma_mask)
-		card->dev->coherent_dma_mask = 0xffffffff;
-
-	if (dai->playback.channels_min) {
-		ret = at32_pcm_preallocate_dma_buffer(
-			  pcm, SNDRV_PCM_STREAM_PLAYBACK);
-		if (ret)
-			goto out;
-	}
-
-	if (dai->capture.channels_min) {
-		pr_debug("at32-pcm: Allocating PCM capture DMA buffer\n");
-		ret = at32_pcm_preallocate_dma_buffer(
-			  pcm, SNDRV_PCM_STREAM_CAPTURE);
-		if (ret)
-			goto out;
-	}
-
-
-out:
-	return ret;
-}
-
-
-
-static void at32_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 == NULL)
-			continue;
-
-		buf = &substream->dma_buffer;
-		if (!buf->area)
-			continue;
-		dma_free_coherent(pcm->card->dev, buf->bytes,
-				  buf->area, buf->addr);
-		buf->area = NULL;
-	}
-}
-
-
-
-#ifdef CONFIG_PM
-static int at32_pcm_suspend(struct platform_device *pdev,
-			    struct snd_soc_dai *dai)
-{
-	struct snd_pcm_runtime *runtime = dai->runtime;
-	struct at32_runtime_data *prtd;
-	struct at32_pcm_dma_params *params;
-
-	if (runtime == NULL)
-		return 0;
-	prtd = runtime->private_data;
-	params = prtd->params;
-
-	/* Disable the PDC and save the PDC registers */
-	ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR,
-		   params->mask->pdc_disable);
-
-	prtd->pdc_xpr_save = ssc_readx(params->ssc->regs, params->pdc->xpr);
-	prtd->pdc_xcr_save = ssc_readx(params->ssc->regs, params->pdc->xcr);
-	prtd->pdc_xnpr_save = ssc_readx(params->ssc->regs, params->pdc->xnpr);
-	prtd->pdc_xncr_save = ssc_readx(params->ssc->regs, params->pdc->xncr);
-
-	return 0;
-}
-
-
-
-static int at32_pcm_resume(struct platform_device *pdev,
-			   struct snd_soc_dai *dai)
-{
-	struct snd_pcm_runtime *runtime = dai->runtime;
-	struct at32_runtime_data *prtd;
-	struct at32_pcm_dma_params *params;
-
-	if (runtime == NULL)
-		return 0;
-	prtd = runtime->private_data;
-	params = prtd->params;
-
-	/* Restore the PDC registers and enable the PDC */
-	ssc_writex(params->ssc->regs, params->pdc->xpr, prtd->pdc_xpr_save);
-	ssc_writex(params->ssc->regs, params->pdc->xcr, prtd->pdc_xcr_save);
-	ssc_writex(params->ssc->regs, params->pdc->xnpr, prtd->pdc_xnpr_save);
-	ssc_writex(params->ssc->regs, params->pdc->xncr, prtd->pdc_xncr_save);
-
-	ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR, params->mask->pdc_enable);
-	return 0;
-}
-#else /* CONFIG_PM */
-#  define at32_pcm_suspend	NULL
-#  define at32_pcm_resume	NULL
-#endif /* CONFIG_PM */
-
-
-
-struct snd_soc_platform at32_soc_platform = {
-	.name = "at32-audio",
-	.pcm_ops = &at32_pcm_ops,
-	.pcm_new = at32_pcm_new,
-	.pcm_free = at32_pcm_free_dma_buffers,
-	.suspend = at32_pcm_suspend,
-	.resume = at32_pcm_resume,
-};
-EXPORT_SYMBOL_GPL(at32_soc_platform);
-
-
-
-MODULE_AUTHOR("Geoffrey Wossum <gwossum@acm.org>");
-MODULE_DESCRIPTION("Atmel AT32 PCM module");
-MODULE_LICENSE("GPL");