diff options
Diffstat (limited to 'target/linux/xburst/files-2.6.32/sound/soc/jz4740/jz4740-i2s.c')
| -rw-r--r-- | target/linux/xburst/files-2.6.32/sound/soc/jz4740/jz4740-i2s.c | 570 |
1 files changed, 0 insertions, 570 deletions
diff --git a/target/linux/xburst/files-2.6.32/sound/soc/jz4740/jz4740-i2s.c b/target/linux/xburst/files-2.6.32/sound/soc/jz4740/jz4740-i2s.c deleted file mode 100644 index c1e070bfd3..0000000000 --- a/target/linux/xburst/files-2.6.32/sound/soc/jz4740/jz4740-i2s.c +++ /dev/null @@ -1,570 +0,0 @@ -/* - * 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/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/dma-mapping.h> -#include <linux/platform_device.h> -#include <linux/clk.h> -#include <linux/io.h> -#include <linux/delay.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; -}; - -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); - int sample_size; - enum jz4740_dma_width dma_width; - 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: - return -EINVAL; - } - - jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl); - - /* This is quite ugly, but apperently it's offical method for passing dma - * config to the pcm module */ - if (playback) { - jz4740_i2s_dma_playback_config.src_width = dma_width; - i2s->pcm_config.dma_config = &jz4740_i2s_dma_playback_config; - } else { - jz4740_i2s_dma_capture_config.dst_width = dma_width; - i2s->pcm_config.dma_config = &jz4740_i2s_dma_capture_config; - } - i2s->pcm_config.fifo_addr = i2s->phys_base + JZ_REG_AIC_FIFO; - - dai->dma_data = &i2s->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"); |