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-rw-r--r--target/linux/xburst/patches-2.6.34/061-asoc.patch1066
1 files changed, 1066 insertions, 0 deletions
diff --git a/target/linux/xburst/patches-2.6.34/061-asoc.patch b/target/linux/xburst/patches-2.6.34/061-asoc.patch
new file mode 100644
index 0000000000..b7e8aa7f0f
--- /dev/null
+++ b/target/linux/xburst/patches-2.6.34/061-asoc.patch
@@ -0,0 +1,1066 @@
+From 6548719b6a1ce4e202d58625fbfb94e6c894ced9 Mon Sep 17 00:00:00 2001
+From: Lars-Peter Clausen <lars@metafoo.de>
+Date: Sat, 24 Apr 2010 12:35:07 +0200
+Subject: [PATCH] Add jz4740 SoC sound drivers
+
+---
+ sound/soc/Kconfig | 1 +
+ sound/soc/Makefile | 1 +
+ sound/soc/jz4740/Kconfig | 13 +
+ sound/soc/jz4740/Makefile | 9 +
+ sound/soc/jz4740/jz4740-i2s.c | 572 +++++++++++++++++++++++++++++++++++++++++
+ sound/soc/jz4740/jz4740-i2s.h | 18 ++
+ sound/soc/jz4740/jz4740-pcm.c | 350 +++++++++++++++++++++++++
+ sound/soc/jz4740/jz4740-pcm.h | 22 ++
+ 8 files changed, 986 insertions(+), 0 deletions(-)
+ create mode 100644 sound/soc/jz4740/Kconfig
+ create mode 100644 sound/soc/jz4740/Makefile
+ create mode 100644 sound/soc/jz4740/jz4740-i2s.c
+ create mode 100644 sound/soc/jz4740/jz4740-i2s.h
+ create mode 100644 sound/soc/jz4740/jz4740-pcm.c
+ create mode 100644 sound/soc/jz4740/jz4740-pcm.h
+
+diff --git a/sound/soc/Kconfig b/sound/soc/Kconfig
+index b1749bc..5a7a724 100644
+--- a/sound/soc/Kconfig
++++ b/sound/soc/Kconfig
+@@ -36,6 +36,7 @@ source "sound/soc/s3c24xx/Kconfig"
+ source "sound/soc/s6000/Kconfig"
+ source "sound/soc/sh/Kconfig"
+ source "sound/soc/txx9/Kconfig"
++source "sound/soc/jz4740/Kconfig"
+
+ # Supported codecs
+ source "sound/soc/codecs/Kconfig"
+diff --git a/sound/soc/Makefile b/sound/soc/Makefile
+index 1470141..fdbe74d 100644
+--- a/sound/soc/Makefile
++++ b/sound/soc/Makefile
+@@ -14,3 +14,4 @@ obj-$(CONFIG_SND_SOC) += s3c24xx/
+ obj-$(CONFIG_SND_SOC) += s6000/
+ obj-$(CONFIG_SND_SOC) += sh/
+ obj-$(CONFIG_SND_SOC) += txx9/
++obj-$(CONFIG_SND_SOC) += jz4740/
+diff --git a/sound/soc/jz4740/Kconfig b/sound/soc/jz4740/Kconfig
+new file mode 100644
+index 0000000..39df949
+--- /dev/null
++++ b/sound/soc/jz4740/Kconfig
+@@ -0,0 +1,13 @@
++config SND_JZ4740_SOC
++ tristate "SoC Audio for Ingenic JZ4740 SoC"
++ depends on SOC_JZ4740 && SND_SOC
++ help
++ Say Y or M if you want to add support for codecs attached to
++ the Jz4740 AC97, I2S or SSP interface. You will also need
++ to select the audio interfaces to support below.
++
++config SND_JZ4740_SOC_I2S
++ depends on SND_JZ4740_SOC
++ tristate "SoC Audio (I2S protocol) for Ingenic jz4740 chip"
++ help
++ Say Y if you want to use I2S protocol and I2S codec on Ingenic Jz4740 QI_LB60 board.
+diff --git a/sound/soc/jz4740/Makefile b/sound/soc/jz4740/Makefile
+new file mode 100644
+index 0000000..1be8d19
+--- /dev/null
++++ b/sound/soc/jz4740/Makefile
+@@ -0,0 +1,9 @@
++#
++# Jz4740 Platform Support
++#
++snd-soc-jz4740-objs := jz4740-pcm.o
++snd-soc-jz4740-i2s-objs := jz4740-i2s.o
++
++obj-$(CONFIG_SND_JZ4740_SOC) += snd-soc-jz4740.o
++obj-$(CONFIG_SND_JZ4740_SOC_I2S) += snd-soc-jz4740-i2s.o
++
+diff --git a/sound/soc/jz4740/jz4740-i2s.c b/sound/soc/jz4740/jz4740-i2s.c
+new file mode 100644
+index 0000000..d3daa27
+--- /dev/null
++++ b/sound/soc/jz4740/jz4740-i2s.c
+@@ -0,0 +1,572 @@
++/*
++ * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
++ *
++ * 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 <linux/init.h>
++#include <linux/io.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/slab.h>
++
++#include <linux/clk.h>
++#include <linux/delay.h>
++
++#include <linux/dma-mapping.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/soc-dapm.h>
++#include <sound/initval.h>
++
++#include "jz4740-i2s.h"
++#include "jz4740-pcm.h"
++
++#define JZ_REG_AIC_CONF 0x00
++#define JZ_REG_AIC_CTRL 0x04
++#define JZ_REG_AIC_I2S_FMT 0x10
++#define JZ_REG_AIC_FIFO_STATUS 0x14
++#define JZ_REG_AIC_I2S_STATUS 0x1c
++#define JZ_REG_AIC_CLK_DIV 0x30
++#define JZ_REG_AIC_FIFO 0x34
++
++#define JZ_AIC_CONF_FIFO_RX_THRESHOLD_MASK (0xf << 12)
++#define JZ_AIC_CONF_FIFO_TX_THRESHOLD_MASK (0xf << 8)
++#define JZ_AIC_CONF_OVERFLOW_PLAY_LAST BIT(6)
++#define JZ_AIC_CONF_INTERNAL_CODEC BIT(5)
++#define JZ_AIC_CONF_I2S BIT(4)
++#define JZ_AIC_CONF_RESET BIT(3)
++#define JZ_AIC_CONF_BIT_CLK_MASTER BIT(2)
++#define JZ_AIC_CONF_SYNC_CLK_MASTER BIT(1)
++#define JZ_AIC_CONF_ENABLE BIT(0)
++
++#define JZ_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET 12
++#define JZ_AIC_CONF_FIFO_TX_THRESHOLD_OFFSET 8
++
++#define JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_MASK (0x7 << 19)
++#define JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_MASK (0x7 << 16)
++#define JZ_AIC_CTRL_ENABLE_RX_DMA BIT(15)
++#define JZ_AIC_CTRL_ENABLE_TX_DMA BIT(14)
++#define JZ_AIC_CTRL_MONO_TO_STEREO BIT(11)
++#define JZ_AIC_CTRL_SWITCH_ENDIANNESS BIT(10)
++#define JZ_AIC_CTRL_SIGNED_TO_UNSIGNED BIT(9)
++#define JZ_AIC_CTRL_FLUSH BIT(8)
++#define JZ_AIC_CTRL_ENABLE_ROR_INT BIT(6)
++#define JZ_AIC_CTRL_ENABLE_TUR_INT BIT(5)
++#define JZ_AIC_CTRL_ENABLE_RFS_INT BIT(4)
++#define JZ_AIC_CTRL_ENABLE_TFS_INT BIT(3)
++#define JZ_AIC_CTRL_ENABLE_LOOPBACK BIT(2)
++#define JZ_AIC_CTRL_ENABLE_PLAYBACK BIT(1)
++#define JZ_AIC_CTRL_ENABLE_CAPTURE BIT(0)
++
++#define JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_OFFSET 19
++#define JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_OFFSET 16
++
++#define JZ_AIC_I2S_FMT_DISABLE_BIT_CLK BIT(12)
++#define JZ_AIC_I2S_FMT_ENABLE_SYS_CLK BIT(4)
++#define JZ_AIC_I2S_FMT_MSB BIT(0)
++
++#define JZ_AIC_I2S_STATUS_BUSY BIT(2)
++
++#define JZ_AIC_CLK_DIV_MASK 0xf
++
++struct jz4740_i2s {
++ struct resource *mem;
++ void __iomem *base;
++ dma_addr_t phys_base;
++
++ struct clk *clk_aic;
++ struct clk *clk_i2s;
++
++ struct jz4740_pcm_config capture_pcm_config;
++ struct jz4740_pcm_config playback_pcm_config;
++};
++
++static struct jz4740_dma_config jz4740_i2s_dma_playback_config = {
++ .src_width = JZ4740_DMA_WIDTH_16BIT,
++ .dst_width = JZ4740_DMA_WIDTH_32BIT,
++ .transfer_size = JZ4740_DMA_TRANSFER_SIZE_16BYTE,
++ .request_type = JZ4740_DMA_TYPE_AIC_TRANSMIT,
++ .flags = JZ4740_DMA_SRC_AUTOINC,
++ .mode = JZ4740_DMA_MODE_SINGLE,
++};
++
++static struct jz4740_dma_config jz4740_i2s_dma_capture_config = {
++ .src_width = JZ4740_DMA_WIDTH_32BIT,
++ .dst_width = JZ4740_DMA_WIDTH_16BIT,
++ .transfer_size = JZ4740_DMA_TRANSFER_SIZE_16BYTE,
++ .request_type = JZ4740_DMA_TYPE_AIC_RECEIVE,
++ .flags = JZ4740_DMA_DST_AUTOINC,
++ .mode = JZ4740_DMA_MODE_SINGLE,
++};
++
++
++static inline uint32_t jz4740_i2s_read(const struct jz4740_i2s *i2s,
++ unsigned int reg)
++{
++ return readl(i2s->base + reg);
++}
++
++static inline void jz4740_i2s_write(const struct jz4740_i2s *i2s,
++ unsigned int reg, uint32_t value)
++{
++ writel(value, i2s->base + reg);
++}
++
++static inline struct jz4740_i2s *jz4740_dai_to_i2s(struct snd_soc_dai *dai)
++{
++ return dai->private_data;
++}
++
++static int jz4740_i2s_startup(struct snd_pcm_substream *substream,
++ struct snd_soc_dai *dai)
++{
++ struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
++ uint32_t conf, ctrl;
++
++ if (dai->active)
++ return 0;
++
++ conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);
++ ctrl = jz4740_i2s_read(i2s, JZ_REG_AIC_CTRL);
++
++ conf |= JZ_AIC_CONF_ENABLE;
++ ctrl |= JZ_AIC_CTRL_FLUSH;
++
++
++ jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl);
++ clk_enable(i2s->clk_i2s);
++ jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);
++
++ return 0;
++}
++
++static void jz4740_i2s_shutdown(struct snd_pcm_substream *substream, struct
++ snd_soc_dai *dai)
++{
++ struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
++ uint32_t conf;
++
++ if (!dai->active)
++ return;
++
++ conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);
++ conf &= ~JZ_AIC_CONF_ENABLE;
++ jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);
++
++ clk_disable(i2s->clk_i2s);
++}
++
++
++static int jz4740_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
++ struct snd_soc_dai *dai)
++{
++ struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
++ bool playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
++
++ uint32_t ctrl;
++ uint32_t mask;
++
++ if (playback) {
++ mask = JZ_AIC_CTRL_ENABLE_PLAYBACK | JZ_AIC_CTRL_ENABLE_TX_DMA;
++ } else {
++ mask = JZ_AIC_CTRL_ENABLE_CAPTURE | JZ_AIC_CTRL_ENABLE_RX_DMA;
++ }
++
++ ctrl = jz4740_i2s_read(i2s, JZ_REG_AIC_CTRL);
++
++ switch (cmd) {
++ case SNDRV_PCM_TRIGGER_START:
++ case SNDRV_PCM_TRIGGER_RESUME:
++ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
++ ctrl |= mask;
++ break;
++ case SNDRV_PCM_TRIGGER_STOP:
++ case SNDRV_PCM_TRIGGER_SUSPEND:
++ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
++ ctrl &= ~mask;
++ break;
++ default:
++ return -EINVAL;
++ }
++
++ jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl);
++
++ return 0;
++}
++
++
++static int jz4740_i2s_set_fmt(struct snd_soc_dai *dai,
++ unsigned int fmt)
++{
++ struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
++
++ uint32_t format = 0;
++ uint32_t conf;
++
++ conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);
++
++ conf &= ~(JZ_AIC_CONF_BIT_CLK_MASTER | JZ_AIC_CONF_SYNC_CLK_MASTER);
++
++ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
++ case SND_SOC_DAIFMT_CBS_CFS:
++ conf |= JZ_AIC_CONF_BIT_CLK_MASTER | JZ_AIC_CONF_SYNC_CLK_MASTER;
++ format |= JZ_AIC_I2S_FMT_ENABLE_SYS_CLK;
++ break;
++ case SND_SOC_DAIFMT_CBM_CFS:
++ conf |= JZ_AIC_CONF_SYNC_CLK_MASTER;
++ break;
++ case SND_SOC_DAIFMT_CBS_CFM:
++ conf |= JZ_AIC_CONF_BIT_CLK_MASTER;
++ break;
++ case SND_SOC_DAIFMT_CBM_CFM:
++ break;
++ default:
++ return -EINVAL;
++ }
++
++ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
++ case SND_SOC_DAIFMT_MSB:
++ format |= JZ_AIC_I2S_FMT_MSB;
++ break;
++ case SND_SOC_DAIFMT_I2S:
++ break;
++ default:
++ return -EINVAL;
++ }
++
++ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
++ case SND_SOC_DAIFMT_NB_NF:
++ break;
++ default:
++ return -EINVAL;
++ }
++
++ jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);
++ jz4740_i2s_write(i2s, JZ_REG_AIC_I2S_FMT, format);
++
++ return 0;
++}
++
++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 = jz4740_dai_to_i2s(dai);
++ bool playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
++ enum jz4740_dma_width dma_width;
++ struct jz4740_pcm_config *pcm_config;
++ unsigned int sample_size;
++ uint32_t ctrl;
++
++ ctrl = jz4740_i2s_read(i2s, JZ_REG_AIC_CTRL);
++
++ 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;
++ }
++
++ if (playback) {
++ ctrl &= ~JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_MASK;
++ ctrl |= sample_size << JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_OFFSET;
++ } else {
++ ctrl &= ~JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_MASK;
++ ctrl |= sample_size << JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_OFFSET;
++ }
++
++ switch (params_channels(params)) {
++ case 2:
++ break;
++ case 1:
++ if (playback) {
++ ctrl |= JZ_AIC_CTRL_MONO_TO_STEREO;
++ break;
++ }
++ default: /* Falltrough */
++ return -EINVAL;
++ }
++
++ jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl);
++
++ if (playback) {
++ jz4740_i2s_dma_playback_config.src_width = dma_width;
++ pcm_config = &i2s->playback_pcm_config;
++ pcm_config->dma_config = &jz4740_i2s_dma_playback_config;
++ } else {
++ jz4740_i2s_dma_capture_config.dst_width = dma_width;
++ pcm_config = &i2s->capture_pcm_config;
++ pcm_config->dma_config = &jz4740_i2s_dma_capture_config;
++ }
++ pcm_config->fifo_addr = i2s->phys_base + JZ_REG_AIC_FIFO;
++
++ snd_soc_dai_set_dma_data(dai, substream, pcm_config);
++
++ return 0;
++}
++
++static int jz4740_i2s_set_clkdiv(struct snd_soc_dai *dai,
++ int div_id, int div)
++{
++ struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
++
++ switch (div_id) {
++ case JZ4740_I2S_BIT_CLK:
++ if (div & 1 || div > 16)
++ return -EINVAL;
++ jz4740_i2s_write(i2s, JZ_REG_AIC_CLK_DIV, div - 1);
++ break;
++ default:
++ return -EINVAL;
++ }
++
++ return 0;
++}
++
++static int jz4740_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id,
++ unsigned int freq, int dir)
++{
++ struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
++ int ret = 0;
++ struct clk *parent;
++
++ switch (clk_id) {
++ case JZ4740_I2S_CLKSRC_EXT:
++ parent = clk_get(NULL, "ext");
++ clk_set_parent(i2s->clk_i2s, parent);
++ break;
++ case JZ4740_I2S_CLKSRC_PLL:
++ parent = clk_get(NULL, "pll half");
++ clk_set_parent(i2s->clk_i2s, parent);
++ ret = clk_set_rate(i2s->clk_i2s, freq);
++ break;
++ default:
++ return -EINVAL;
++ }
++ clk_put(parent);
++
++ return ret;
++}
++
++static int jz4740_i2s_suspend(struct snd_soc_dai *dai)
++{
++ struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
++ uint32_t conf;
++
++ if (dai->active) {
++ conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);
++ conf &= ~JZ_AIC_CONF_ENABLE;
++ jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);
++
++ clk_disable(i2s->clk_i2s);
++ }
++
++ clk_disable(i2s->clk_aic);
++
++ return 0;
++}
++
++static int jz4740_i2s_resume(struct snd_soc_dai *dai)
++{
++ struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
++ uint32_t conf;
++
++ clk_enable(i2s->clk_aic);
++
++ if (dai->active) {
++ clk_enable(i2s->clk_i2s);
++
++ conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);
++ conf |= JZ_AIC_CONF_ENABLE;
++ jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);
++
++ }
++
++ return 0;
++}
++
++static int jz4740_i2s_probe(struct platform_device *pdev, struct snd_soc_dai *dai)
++{
++ struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
++ uint32_t conf;
++
++ conf = (7 << JZ_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET) |
++ (8 << JZ_AIC_CONF_FIFO_TX_THRESHOLD_OFFSET) |
++ JZ_AIC_CONF_OVERFLOW_PLAY_LAST |
++ JZ_AIC_CONF_I2S |
++ JZ_AIC_CONF_INTERNAL_CODEC;
++
++ jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, JZ_AIC_CONF_RESET);
++ jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);
++
++ return 0;
++}
++
++
++static struct snd_soc_dai_ops jz4740_i2s_dai_ops = {
++ .startup = jz4740_i2s_startup,
++ .shutdown = jz4740_i2s_shutdown,
++ .trigger = jz4740_i2s_trigger,
++ .hw_params = jz4740_i2s_hw_params,
++ .set_fmt = jz4740_i2s_set_fmt,
++ .set_clkdiv = jz4740_i2s_set_clkdiv,
++ .set_sysclk = jz4740_i2s_set_sysclk,
++};
++
++#define JZ4740_I2S_FMTS (SNDRV_PCM_FMTBIT_S8 | \
++ SNDRV_PCM_FMTBIT_S16_LE)
++
++struct snd_soc_dai jz4740_i2s_dai = {
++ .name = "jz4740-i2s",
++ .probe = jz4740_i2s_probe,
++ .playback = {
++ .channels_min = 1,
++ .channels_max = 2,
++ .rates = SNDRV_PCM_RATE_8000_44100,
++ .formats = JZ4740_I2S_FMTS,
++ },
++ .capture = {
++ .channels_min = 2,
++ .channels_max = 2,
++ .rates = SNDRV_PCM_RATE_8000_44100,
++ .formats = JZ4740_I2S_FMTS,
++ },
++ .symmetric_rates = 1,
++ .ops = &jz4740_i2s_dai_ops,
++ .suspend = jz4740_i2s_suspend,
++ .resume = jz4740_i2s_resume,
++};
++EXPORT_SYMBOL_GPL(jz4740_i2s_dai);
++
++static int __devinit jz4740_i2s_dev_probe(struct platform_device *pdev)
++{
++ struct jz4740_i2s *i2s;
++ int ret;
++
++ i2s = kzalloc(sizeof(*i2s), GFP_KERNEL);
++
++ if (!i2s)
++ return -ENOMEM;
++
++ i2s->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++
++ if (!i2s->mem) {
++ ret = -ENOENT;
++ goto err_free;
++ }
++
++ i2s->mem = request_mem_region(i2s->mem->start, resource_size(i2s->mem),
++ pdev->name);
++
++ if (!i2s->mem) {
++ ret = -EBUSY;
++ goto err_free;
++ }
++
++ i2s->base = ioremap_nocache(i2s->mem->start, resource_size(i2s->mem));
++
++ if (!i2s->base) {
++ ret = -EBUSY;
++ goto err_release_mem_region;
++ }
++
++ i2s->phys_base = i2s->mem->start;
++
++ jz4740_i2s_dai.private_data = i2s;
++
++ ret = snd_soc_register_dai(&jz4740_i2s_dai);
++
++ i2s->clk_aic = clk_get(&pdev->dev, "aic");
++
++ if (IS_ERR(i2s->clk_aic)) {
++ ret = PTR_ERR(i2s->clk_aic);
++ goto err_iounmap;
++ }
++
++
++ i2s->clk_i2s = clk_get(&pdev->dev, "i2s");
++
++ if (IS_ERR(i2s->clk_i2s)) {
++ ret = PTR_ERR(i2s->clk_i2s);
++ goto err_iounmap;
++ }
++
++ clk_enable(i2s->clk_aic);
++
++ platform_set_drvdata(pdev, i2s);
++
++ return 0;
++
++err_iounmap:
++ iounmap(i2s->base);
++err_release_mem_region:
++ release_mem_region(i2s->mem->start, resource_size(i2s->mem));
++err_free:
++ kfree(i2s);
++
++ return ret;
++}
++
++static int __devexit jz4740_i2s_dev_remove(struct platform_device *pdev)
++{
++ struct jz4740_i2s *i2s = platform_get_drvdata(pdev);
++
++ snd_soc_unregister_dai(&jz4740_i2s_dai);
++
++ clk_disable(i2s->clk_aic);
++ clk_put(i2s->clk_i2s);
++ clk_put(i2s->clk_aic);
++
++ iounmap(i2s->base);
++ release_mem_region(i2s->mem->start, resource_size(i2s->mem));
++
++ platform_set_drvdata(pdev, NULL);
++ kfree(i2s);
++
++ return 0;
++}
++
++static struct platform_driver jz4740_i2s_driver = {
++ .probe = jz4740_i2s_dev_probe,
++ .remove = __devexit_p(jz4740_i2s_dev_remove),
++ .driver = {
++ .name = "jz4740-i2s",
++ .owner = THIS_MODULE,
++ },
++};
++
++static int __init jz4740_i2s_init(void)
++{
++ return platform_driver_register(&jz4740_i2s_driver);
++}
++module_init(jz4740_i2s_init);
++
++static void __exit jz4740_i2s_exit(void)
++{
++ platform_driver_unregister(&jz4740_i2s_driver);
++}
++module_exit(jz4740_i2s_exit);
++
++MODULE_AUTHOR("Lars-Peter Clausen, <lars@metafoo.de>");
++MODULE_DESCRIPTION("Ingenic JZ4740 SoC I2S driver");
++MODULE_LICENSE("GPL");
++MODULE_ALIAS("platform:jz4740-i2s");
+diff --git a/sound/soc/jz4740/jz4740-i2s.h b/sound/soc/jz4740/jz4740-i2s.h
+new file mode 100644
+index 0000000..da22ed8
+--- /dev/null
++++ b/sound/soc/jz4740/jz4740-i2s.h
+@@ -0,0 +1,18 @@
++/*
++ * 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_I2S_H
++#define _JZ4740_I2S_H
++
++/* I2S clock source */
++#define JZ4740_I2S_CLKSRC_EXT 0
++#define JZ4740_I2S_CLKSRC_PLL 1
++
++#define JZ4740_I2S_BIT_CLK 0
++
++extern struct snd_soc_dai jz4740_i2s_dai;
++
++#endif
+diff --git a/sound/soc/jz4740/jz4740-pcm.c b/sound/soc/jz4740/jz4740-pcm.c
+new file mode 100644
+index 0000000..e55ffbf
+--- /dev/null
++++ b/sound/soc/jz4740/jz4740-pcm.c
+@@ -0,0 +1,350 @@
++/*
++ * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
++ *
++ * 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 <linux/init.h>
++#include <linux/interrupt.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/slab.h>
++
++#include <linux/dma-mapping.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 int 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 = 32,
++ .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, int stream)
++{
++ unsigned int count;
++
++ 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 (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);
++
++ jz4740_dma_enable(prtd->dma);
++
++ prtd->dma_pos += prtd->dma_period;
++ if (prtd->dma_pos >= prtd->dma_end)
++ prtd->dma_pos = prtd->dma_start;
++}
++
++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->stream);
++}
++
++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->dai->cpu_dai, substream);
++ if (!prtd->dma) {
++ const char *dma_channel_name;
++ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
++ dma_channel_name = "PCM Playback";
++ else
++ dma_channel_name = "PCM Capture";
++
++ prtd->dma = jz4740_dma_request(substream, dma_channel_name);
++ }
++
++ 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;
++ int ret = 0;
++
++ if (!prtd->dma)
++ return 0;
++
++ prtd->dma_pos = prtd->dma_start;
++
++ return ret;
++}
++
++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;
++
++ int ret = 0;
++
++ switch (cmd) {
++ case SNDRV_PCM_TRIGGER_START:
++ case SNDRV_PCM_TRIGGER_RESUME:
++ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
++ jz4740_pcm_start_transfer(prtd, substream->stream);
++ break;
++ case SNDRV_PCM_TRIGGER_STOP:
++ case SNDRV_PCM_TRIGGER_SUSPEND:
++ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
++ jz4740_dma_disable(prtd->dma);
++ break;
++ default:
++ ret = -EINVAL;
++ }
++
++ return ret;
++}
++
++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 count, pos;
++ snd_pcm_uframes_t offset;
++ struct jz4740_dma_chan *dma = prtd->dma;
++
++ count = jz4740_dma_get_residue(dma);
++ if (prtd->dma_pos == prtd->dma_start)
++ pos = prtd->dma_end - prtd->dma_start - count;
++ else
++ pos = prtd->dma_pos - prtd->dma_start - count;
++
++ offset = bytes_to_frames(runtime, pos);
++ 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;
++
++ snd_soc_set_runtime_hwparams(substream, &jz4740_pcm_hardware);
++ prtd = kzalloc(sizeof(struct jz4740_runtime_data), GFP_KERNEL);
++
++ if (prtd == NULL)
++ return -ENOMEM;
++
++ 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 < 2; 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);
++
++int jz4740_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 = &jz4740_pcm_dmamask;
++
++ if (!card->dev->coherent_dma_mask)
++ card->dev->coherent_dma_mask = DMA_BIT_MASK(32);
++
++ if (dai->playback.channels_min) {
++ ret = jz4740_pcm_preallocate_dma_buffer(pcm,
++ SNDRV_PCM_STREAM_PLAYBACK);
++ if (ret)
++ goto err;
++ }
++
++ if (dai->capture.channels_min) {
++ ret = jz4740_pcm_preallocate_dma_buffer(pcm,
++ SNDRV_PCM_STREAM_CAPTURE);
++ if (ret)
++ goto err;
++ }
++
++err:
++ return ret;
++}
++
++struct snd_soc_platform jz4740_soc_platform = {
++ .name = "jz4740-pcm",
++ .pcm_ops = &jz4740_pcm_ops,
++ .pcm_new = jz4740_pcm_new,
++ .pcm_free = jz4740_pcm_free,
++};
++EXPORT_SYMBOL_GPL(jz4740_soc_platform);
++
++static int __init jz4740_soc_platform_init(void)
++{
++ return snd_soc_register_platform(&jz4740_soc_platform);
++}
++module_init(jz4740_soc_platform_init);
++
++static void __exit jz4740_soc_platform_exit(void)
++{
++ snd_soc_unregister_platform(&jz4740_soc_platform);
++}
++module_exit(jz4740_soc_platform_exit);
++
++MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
++MODULE_DESCRIPTION("Ingenic SoC JZ4740 PCM driver");
++MODULE_LICENSE("GPL");
+diff --git a/sound/soc/jz4740/jz4740-pcm.h b/sound/soc/jz4740/jz4740-pcm.h
+new file mode 100644
+index 0000000..2a11800
+--- /dev/null
++++ b/sound/soc/jz4740/jz4740-pcm.h
+@@ -0,0 +1,22 @@
++/*
++ *
++ * 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>
++
++/* platform data */
++extern struct snd_soc_platform jz4740_soc_platform;
++
++struct jz4740_pcm_config {
++ struct jz4740_dma_config *dma_config;
++ phys_addr_t fifo_addr;
++};
++
++#endif
+--
+1.5.6.5
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 16:16:04 +0000