diff options
Diffstat (limited to 'target/linux/xburst/patches-2.6.35/061-asoc.patch')
| -rw-r--r-- | target/linux/xburst/patches-2.6.35/061-asoc.patch | 1038 |
1 files changed, 1038 insertions, 0 deletions
diff --git a/target/linux/xburst/patches-2.6.35/061-asoc.patch b/target/linux/xburst/patches-2.6.35/061-asoc.patch new file mode 100644 index 0000000000..9144299374 --- /dev/null +++ b/target/linux/xburst/patches-2.6.35/061-asoc.patch @@ -0,0 +1,1038 @@ +From def17bc36684a36ca60211759c84bcc43f4f385a Mon Sep 17 00:00:00 2001 +From: Lars-Peter Clausen <lars@metafoo.de> +Date: Sat, 19 Jun 2010 16:50:37 +0200 +Subject: [PATCH] ASoC: Add JZ4740 ASoC support + +This patch adds ASoC support for JZ4740 SoCs I2S module. + +Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> +Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> +Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> +--- + sound/soc/Kconfig | 1 + + sound/soc/Makefile | 1 + + sound/soc/jz4740/Kconfig | 14 + + sound/soc/jz4740/Makefile | 9 + + sound/soc/jz4740/jz4740-i2s.c | 540 +++++++++++++++++++++++++++++++++++++++++ + sound/soc/jz4740/jz4740-i2s.h | 18 ++ + sound/soc/jz4740/jz4740-pcm.c | 373 ++++++++++++++++++++++++++++ + sound/soc/jz4740/jz4740-pcm.h | 22 ++ + 8 files changed, 978 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 + +--- 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" +--- 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-$(CONFIG_SND_SOC) += jz4740/ +--- /dev/null ++++ b/sound/soc/jz4740/Kconfig +@@ -0,0 +1,14 @@ ++config SND_JZ4740_SOC ++ tristate "SoC Audio for Ingenic JZ4740 SoC" ++ depends on MACH_JZ4740 && SND_SOC ++ help ++ Say Y or M if you want to add support for codecs attached to ++ the JZ4740 I2S interface. You will also need to select the audio ++ interfaces to support below. ++ ++config SND_JZ4740_SOC_I2S ++ depends on SND_JZ4740_SOC ++ tristate "SoC Audio (I2S protocol) for Ingenic JZ4740 SoC" ++ help ++ Say Y if you want to use I2S protocol and I2S codec on Ingenic JZ4740 ++ based boards. +--- /dev/null ++++ b/sound/soc/jz4740/Makefile +@@ -0,0 +1,9 @@ ++# ++# Jz4740 Platform Support ++# ++snd-soc-jz4740-objs := jz4740-pcm.o ++snd-soc-jz4740-i2s-objs := jz4740-i2s.o ++ ++obj-$(CONFIG_SND_JZ4740_SOC) += snd-soc-jz4740.o ++obj-$(CONFIG_SND_JZ4740_SOC_I2S) += snd-soc-jz4740-i2s.o ++ +--- /dev/null ++++ b/sound/soc/jz4740/jz4740-i2s.c +@@ -0,0 +1,540 @@ ++/* ++ * 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 pcm_config_playback; ++ struct jz4740_pcm_config pcm_config_capture; ++}; ++ ++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; ++ ++ ctrl = jz4740_i2s_read(i2s, JZ_REG_AIC_CTRL); ++ ctrl |= JZ_AIC_CTRL_FLUSH; ++ jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl); ++ ++ 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 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); ++ ++ uint32_t ctrl; ++ uint32_t mask; ++ ++ if (substream->stream == SNDRV_PCM_STREAM_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); ++ 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 (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { ++ ctrl &= ~JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_MASK; ++ ctrl |= sample_size << JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_OFFSET; ++ if (params_channels(params) == 1) ++ 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; ++} ++ ++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); ++ struct clk *parent; ++ int ret = 0; ++ ++ 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_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_48000, ++ .formats = JZ4740_I2S_FMTS, ++ }, ++ .capture = { ++ .channels_min = 2, ++ .channels_max = 2, ++ .rates = SNDRV_PCM_RATE_8000_48000, ++ .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 void __devinit jz4740_i2c_init_pcm_config(struct jz4740_i2s *i2s) ++{ ++ struct jz4740_dma_config *dma_config; ++ ++ /* 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; ++ ++ /* 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; ++} ++ ++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; ++ ++ 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_clk_put_aic; ++ } ++ ++ clk_enable(i2s->clk_aic); ++ ++ jz4740_i2c_init_pcm_config(i2s); ++ ++ jz4740_i2s_dai.private_data = i2s; ++ ret = snd_soc_register_dai(&jz4740_i2s_dai); ++ ++ if (ret) { ++ dev_err(&pdev->dev, "Failed to register DAI\n"); ++ goto err_clk_put_i2s; ++ } ++ ++ platform_set_drvdata(pdev, i2s); ++ ++ return 0; ++ ++err_clk_put_i2s: ++ clk_disable(i2s->clk_aic); ++ clk_put(i2s->clk_i2s); ++err_clk_put_aic: ++ clk_put(i2s->clk_aic); ++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"); +--- /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 +--- /dev/null ++++ b/sound/soc/jz4740/jz4740-pcm.c +@@ -0,0 +1,373 @@ ++/* ++ * 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/platform_device.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 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->dai->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); ++ ++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 __devinit jz4740_pcm_probe(struct platform_device *pdev) ++{ ++ return snd_soc_register_platform(&jz4740_soc_platform); ++} ++ ++static int __devexit jz4740_pcm_remove(struct platform_device *pdev) ++{ ++ snd_soc_unregister_platform(&jz4740_soc_platform); ++ return 0; ++} ++ ++static struct platform_driver jz4740_pcm_driver = { ++ .probe = jz4740_pcm_probe, ++ .remove = __devexit_p(jz4740_pcm_remove), ++ .driver = { ++ .name = "jz4740-pcm", ++ .owner = THIS_MODULE, ++ }, ++}; ++ ++static int __init jz4740_soc_platform_init(void) ++{ ++ return platform_driver_register(&jz4740_pcm_driver); ++} ++module_init(jz4740_soc_platform_init); ++ ++static void __exit jz4740_soc_platform_exit(void) ++{ ++ return platform_driver_unregister(&jz4740_pcm_driver); ++} ++module_exit(jz4740_soc_platform_exit); ++ ++MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); ++MODULE_DESCRIPTION("Ingenic SoC JZ4740 PCM driver"); ++MODULE_LICENSE("GPL"); +--- /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 |