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-rw-r--r--target/linux/xburst/patches-3.10/016-ASoC-jz4740-Use-the-generic-dmaengine-PCM-driver.patch519
1 files changed, 519 insertions, 0 deletions
diff --git a/target/linux/xburst/patches-3.10/016-ASoC-jz4740-Use-the-generic-dmaengine-PCM-driver.patch b/target/linux/xburst/patches-3.10/016-ASoC-jz4740-Use-the-generic-dmaengine-PCM-driver.patch
new file mode 100644
index 0000000000..296d5cccd1
--- /dev/null
+++ b/target/linux/xburst/patches-3.10/016-ASoC-jz4740-Use-the-generic-dmaengine-PCM-driver.patch
@@ -0,0 +1,519 @@
+From a20f54fdd500e5bccc9bd1ca4ac9f150addf2e64 Mon Sep 17 00:00:00 2001
+From: Lars-Peter Clausen <lars@metafoo.de>
+Date: Sat, 27 Apr 2013 21:26:30 +0200
+Subject: [PATCH 16/16] ASoC: jz4740: Use the generic dmaengine PCM driver
+
+Since there is a dmaengine driver for the jz4740 DMA controller now we can use
+the generic dmaengine PCM driver instead of a custom one.
+
+Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
+Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
+---
+ sound/soc/jz4740/Kconfig | 1 +
+ sound/soc/jz4740/jz4740-i2s.c | 48 +++----
+ sound/soc/jz4740/jz4740-pcm.c | 310 ++---------------------------------------
+ sound/soc/jz4740/jz4740-pcm.h | 20 ---
+ 4 files changed, 27 insertions(+), 352 deletions(-)
+ delete mode 100644 sound/soc/jz4740/jz4740-pcm.h
+
+diff --git a/sound/soc/jz4740/Kconfig b/sound/soc/jz4740/Kconfig
+index 5351cba..29f76af 100644
+--- a/sound/soc/jz4740/Kconfig
++++ b/sound/soc/jz4740/Kconfig
+@@ -1,6 +1,7 @@
+ config SND_JZ4740_SOC
+ tristate "SoC Audio for Ingenic JZ4740 SoC"
+ depends on MACH_JZ4740 && SND_SOC
++ select SND_SOC_GENERIC_DMAENGINE_PCM
+ help
+ Say Y or M if you want to add support for codecs attached to
+ the JZ4740 I2S interface. You will also need to select the audio
+diff --git a/sound/soc/jz4740/jz4740-i2s.c b/sound/soc/jz4740/jz4740-i2s.c
+index 9a12644..5d04134 100644
+--- a/sound/soc/jz4740/jz4740-i2s.c
++++ b/sound/soc/jz4740/jz4740-i2s.c
+@@ -29,9 +29,12 @@
+ #include <sound/pcm_params.h>
+ #include <sound/soc.h>
+ #include <sound/initval.h>
++#include <sound/dmaengine_pcm.h>
++
++#include <asm/mach-jz4740/dma.h>
+
+ #include "jz4740-i2s.h"
+-#include "jz4740-pcm.h"
++
+
+ #define JZ_REG_AIC_CONF 0x00
+ #define JZ_REG_AIC_CTRL 0x04
+@@ -89,8 +92,8 @@ struct jz4740_i2s {
+ struct clk *clk_aic;
+ struct clk *clk_i2s;
+
+- struct jz4740_pcm_config pcm_config_playback;
+- struct jz4740_pcm_config pcm_config_capture;
++ struct snd_dmaengine_dai_dma_data playback_dma_data;
++ struct snd_dmaengine_dai_dma_data capture_dma_data;
+ };
+
+ static inline uint32_t jz4740_i2s_read(const struct jz4740_i2s *i2s,
+@@ -233,8 +236,6 @@ static int jz4740_i2s_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+ {
+ struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai);
+- enum jz4740_dma_width dma_width;
+- struct jz4740_pcm_config *pcm_config;
+ unsigned int sample_size;
+ uint32_t ctrl;
+
+@@ -243,11 +244,9 @@ static int jz4740_i2s_hw_params(struct snd_pcm_substream *substream,
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S8:
+ sample_size = 0;
+- dma_width = JZ4740_DMA_WIDTH_8BIT;
+ break;
+ case SNDRV_PCM_FORMAT_S16:
+ sample_size = 1;
+- dma_width = JZ4740_DMA_WIDTH_16BIT;
+ break;
+ default:
+ return -EINVAL;
+@@ -260,22 +259,13 @@ static int jz4740_i2s_hw_params(struct snd_pcm_substream *substream,
+ ctrl |= JZ_AIC_CTRL_MONO_TO_STEREO;
+ else
+ ctrl &= ~JZ_AIC_CTRL_MONO_TO_STEREO;
+-
+- pcm_config = &i2s->pcm_config_playback;
+- pcm_config->dma_config.dst_width = dma_width;
+-
+ } else {
+ ctrl &= ~JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_MASK;
+ ctrl |= sample_size << JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_OFFSET;
+-
+- pcm_config = &i2s->pcm_config_capture;
+- pcm_config->dma_config.src_width = dma_width;
+ }
+
+ jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl);
+
+- snd_soc_dai_set_dma_data(dai, substream, pcm_config);
+-
+ return 0;
+ }
+
+@@ -342,25 +332,19 @@ static int jz4740_i2s_resume(struct snd_soc_dai *dai)
+
+ static void jz4740_i2c_init_pcm_config(struct jz4740_i2s *i2s)
+ {
+- struct jz4740_dma_config *dma_config;
++ struct snd_dmaengine_dai_dma_data *dma_data;
+
+ /* Playback */
+- dma_config = &i2s->pcm_config_playback.dma_config;
+- dma_config->src_width = JZ4740_DMA_WIDTH_32BIT;
+- dma_config->transfer_size = JZ4740_DMA_TRANSFER_SIZE_16BYTE;
+- dma_config->request_type = JZ4740_DMA_TYPE_AIC_TRANSMIT;
+- dma_config->flags = JZ4740_DMA_SRC_AUTOINC;
+- dma_config->mode = JZ4740_DMA_MODE_SINGLE;
+- i2s->pcm_config_playback.fifo_addr = i2s->phys_base + JZ_REG_AIC_FIFO;
++ dma_data = &i2s->playback_dma_data;
++ dma_data->maxburst = 16;
++ dma_data->slave_id = JZ4740_DMA_TYPE_AIC_TRANSMIT;
++ dma_data->addr = i2s->phys_base + JZ_REG_AIC_FIFO;
+
+ /* Capture */
+- dma_config = &i2s->pcm_config_capture.dma_config;
+- dma_config->dst_width = JZ4740_DMA_WIDTH_32BIT;
+- dma_config->transfer_size = JZ4740_DMA_TRANSFER_SIZE_16BYTE;
+- dma_config->request_type = JZ4740_DMA_TYPE_AIC_RECEIVE;
+- dma_config->flags = JZ4740_DMA_DST_AUTOINC;
+- dma_config->mode = JZ4740_DMA_MODE_SINGLE;
+- i2s->pcm_config_capture.fifo_addr = i2s->phys_base + JZ_REG_AIC_FIFO;
++ dma_data = &i2s->capture_dma_data;
++ dma_data->maxburst = 16;
++ dma_data->slave_id = JZ4740_DMA_TYPE_AIC_RECEIVE;
++ dma_data->addr = i2s->phys_base + JZ_REG_AIC_FIFO;
+ }
+
+ static int jz4740_i2s_dai_probe(struct snd_soc_dai *dai)
+@@ -371,6 +355,8 @@ static int jz4740_i2s_dai_probe(struct snd_soc_dai *dai)
+ clk_enable(i2s->clk_aic);
+
+ jz4740_i2c_init_pcm_config(i2s);
++ dai->playback_dma_data = &i2s->playback_dma_data;
++ dai->capture_dma_data = &i2s->capture_dma_data;
+
+ conf = (7 << JZ_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET) |
+ (8 << JZ_AIC_CONF_FIFO_TX_THRESHOLD_OFFSET) |
+diff --git a/sound/soc/jz4740/jz4740-pcm.c b/sound/soc/jz4740/jz4740-pcm.c
+index 7100592..79fcade 100644
+--- a/sound/soc/jz4740/jz4740-pcm.c
++++ b/sound/soc/jz4740/jz4740-pcm.c
+@@ -19,38 +19,14 @@
+ #include <linux/platform_device.h>
+ #include <linux/slab.h>
+
+-#include <linux/dma-mapping.h>
++#include <sound/dmaengine_pcm.h>
+
+-#include <sound/core.h>
+-#include <sound/pcm.h>
+-#include <sound/pcm_params.h>
+-#include <sound/soc.h>
+-
+-#include <asm/mach-jz4740/dma.h>
+-#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,
+@@ -59,290 +35,22 @@ static const struct snd_pcm_hardware jz4740_pcm_hardware = {
+ .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 const struct snd_dmaengine_pcm_config jz4740_dmaengine_pcm_config = {
++ .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
++ .pcm_hardware = &jz4740_pcm_hardware,
++ .prealloc_buffer_size = 256 * PAGE_SIZE,
+ };
+
+ static int jz4740_pcm_probe(struct platform_device *pdev)
+ {
+- return snd_soc_register_platform(&pdev->dev, &jz4740_soc_platform);
++ return snd_dmaengine_pcm_register(&pdev->dev,
++ &jz4740_dmaengine_pcm_config,
++ SND_DMAENGINE_PCM_FLAG_COMPAT);
+ }
+
+ static int jz4740_pcm_remove(struct platform_device *pdev)
+ {
+- snd_soc_unregister_platform(&pdev->dev);
++ snd_dmaengine_pcm_unregister(&pdev->dev);
+ return 0;
+ }
+
+diff --git a/sound/soc/jz4740/jz4740-pcm.h b/sound/soc/jz4740/jz4740-pcm.h
+deleted file mode 100644
+index 1220cbb..0000000
+--- a/sound/soc/jz4740/jz4740-pcm.h
++++ /dev/null
+@@ -1,20 +0,0 @@
+-/*
+- *
+- * 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.
+- */
+-
+-#ifndef _JZ4740_PCM_H
+-#define _JZ4740_PCM_H
+-
+-#include <linux/dma-mapping.h>
+-#include <asm/mach-jz4740/dma.h>
+-
+-
+-struct jz4740_pcm_config {
+- struct jz4740_dma_config dma_config;
+- phys_addr_t fifo_addr;
+-};
+-
+-#endif
+--
+1.7.10.4
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 12:31:24 +0000