diff options
Diffstat (limited to 'ANDROID_3.4.5/sound/soc/kirkwood/kirkwood-i2s.c')
| -rw-r--r-- | ANDROID_3.4.5/sound/soc/kirkwood/kirkwood-i2s.c | 491 |
1 files changed, 0 insertions, 491 deletions
diff --git a/ANDROID_3.4.5/sound/soc/kirkwood/kirkwood-i2s.c b/ANDROID_3.4.5/sound/soc/kirkwood/kirkwood-i2s.c deleted file mode 100644 index 3cb9aa42..00000000 --- a/ANDROID_3.4.5/sound/soc/kirkwood/kirkwood-i2s.c +++ /dev/null @@ -1,491 +0,0 @@ -/* - * kirkwood-i2s.c - * - * (c) 2010 Arnaud Patard <apatard@mandriva.com> - * (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org> - * - * 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. - */ - -#include <linux/init.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/io.h> -#include <linux/slab.h> -#include <linux/mbus.h> -#include <linux/delay.h> -#include <sound/pcm.h> -#include <sound/pcm_params.h> -#include <sound/soc.h> -#include <plat/audio.h> -#include "kirkwood.h" - -#define DRV_NAME "kirkwood-i2s" - -#define KIRKWOOD_I2S_RATES \ - (SNDRV_PCM_RATE_44100 | \ - SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000) -#define KIRKWOOD_I2S_FORMATS \ - (SNDRV_PCM_FMTBIT_S16_LE | \ - SNDRV_PCM_FMTBIT_S24_LE | \ - SNDRV_PCM_FMTBIT_S32_LE) - -static int kirkwood_i2s_set_fmt(struct snd_soc_dai *cpu_dai, - unsigned int fmt) -{ - struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(cpu_dai); - unsigned long mask; - unsigned long value; - - switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { - case SND_SOC_DAIFMT_RIGHT_J: - mask = KIRKWOOD_I2S_CTL_RJ; - break; - case SND_SOC_DAIFMT_LEFT_J: - mask = KIRKWOOD_I2S_CTL_LJ; - break; - case SND_SOC_DAIFMT_I2S: - mask = KIRKWOOD_I2S_CTL_I2S; - break; - default: - return -EINVAL; - } - - /* - * Set same format for playback and record - * This avoids some troubles. - */ - value = readl(priv->io+KIRKWOOD_I2S_PLAYCTL); - value &= ~KIRKWOOD_I2S_CTL_JUST_MASK; - value |= mask; - writel(value, priv->io+KIRKWOOD_I2S_PLAYCTL); - - value = readl(priv->io+KIRKWOOD_I2S_RECCTL); - value &= ~KIRKWOOD_I2S_CTL_JUST_MASK; - value |= mask; - writel(value, priv->io+KIRKWOOD_I2S_RECCTL); - - return 0; -} - -static inline void kirkwood_set_dco(void __iomem *io, unsigned long rate) -{ - unsigned long value; - - value = KIRKWOOD_DCO_CTL_OFFSET_0; - switch (rate) { - default: - case 44100: - value |= KIRKWOOD_DCO_CTL_FREQ_11; - break; - case 48000: - value |= KIRKWOOD_DCO_CTL_FREQ_12; - break; - case 96000: - value |= KIRKWOOD_DCO_CTL_FREQ_24; - break; - } - writel(value, io + KIRKWOOD_DCO_CTL); - - /* wait for dco locked */ - do { - cpu_relax(); - value = readl(io + KIRKWOOD_DCO_SPCR_STATUS); - value &= KIRKWOOD_DCO_SPCR_STATUS; - } while (value == 0); -} - -static int kirkwood_i2s_startup(struct snd_pcm_substream *substream, - struct snd_soc_dai *dai) -{ - struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); - - snd_soc_dai_set_dma_data(dai, substream, priv); - return 0; -} - -static int kirkwood_i2s_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *params, - struct snd_soc_dai *dai) -{ - struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); - unsigned int i2s_reg, reg; - unsigned long i2s_value, value; - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - i2s_reg = KIRKWOOD_I2S_PLAYCTL; - reg = KIRKWOOD_PLAYCTL; - } else { - i2s_reg = KIRKWOOD_I2S_RECCTL; - reg = KIRKWOOD_RECCTL; - } - - /* set dco conf */ - kirkwood_set_dco(priv->io, params_rate(params)); - - i2s_value = readl(priv->io+i2s_reg); - i2s_value &= ~KIRKWOOD_I2S_CTL_SIZE_MASK; - - value = readl(priv->io+reg); - value &= ~KIRKWOOD_PLAYCTL_SIZE_MASK; - - /* - * Size settings in play/rec i2s control regs and play/rec control - * regs must be the same. - */ - switch (params_format(params)) { - case SNDRV_PCM_FORMAT_S16_LE: - i2s_value |= KIRKWOOD_I2S_CTL_SIZE_16; - value |= KIRKWOOD_PLAYCTL_SIZE_16_C; - break; - /* - * doesn't work... S20_3LE != kirkwood 20bit format ? - * - case SNDRV_PCM_FORMAT_S20_3LE: - i2s_value |= KIRKWOOD_I2S_CTL_SIZE_20; - value |= KIRKWOOD_PLAYCTL_SIZE_20; - break; - */ - case SNDRV_PCM_FORMAT_S24_LE: - i2s_value |= KIRKWOOD_I2S_CTL_SIZE_24; - value |= KIRKWOOD_PLAYCTL_SIZE_24; - break; - case SNDRV_PCM_FORMAT_S32_LE: - i2s_value |= KIRKWOOD_I2S_CTL_SIZE_32; - value |= KIRKWOOD_PLAYCTL_SIZE_32; - break; - default: - return -EINVAL; - } - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - value &= ~KIRKWOOD_PLAYCTL_MONO_MASK; - if (params_channels(params) == 1) - value |= KIRKWOOD_PLAYCTL_MONO_BOTH; - else - value |= KIRKWOOD_PLAYCTL_MONO_OFF; - } - - writel(i2s_value, priv->io+i2s_reg); - writel(value, priv->io+reg); - - return 0; -} - -static int kirkwood_i2s_play_trigger(struct snd_pcm_substream *substream, - int cmd, struct snd_soc_dai *dai) -{ - struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); - unsigned long value; - - /* - * specs says KIRKWOOD_PLAYCTL must be read 2 times before - * changing it. So read 1 time here and 1 later. - */ - value = readl(priv->io + KIRKWOOD_PLAYCTL); - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - /* stop audio, enable interrupts */ - value = readl(priv->io + KIRKWOOD_PLAYCTL); - value |= KIRKWOOD_PLAYCTL_PAUSE; - writel(value, priv->io + KIRKWOOD_PLAYCTL); - - value = readl(priv->io + KIRKWOOD_INT_MASK); - value |= KIRKWOOD_INT_CAUSE_PLAY_BYTES; - writel(value, priv->io + KIRKWOOD_INT_MASK); - - /* configure audio & enable i2s playback */ - value = readl(priv->io + KIRKWOOD_PLAYCTL); - value &= ~KIRKWOOD_PLAYCTL_BURST_MASK; - value &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE - | KIRKWOOD_PLAYCTL_SPDIF_EN); - - if (priv->burst == 32) - value |= KIRKWOOD_PLAYCTL_BURST_32; - else - value |= KIRKWOOD_PLAYCTL_BURST_128; - value |= KIRKWOOD_PLAYCTL_I2S_EN; - writel(value, priv->io + KIRKWOOD_PLAYCTL); - break; - - case SNDRV_PCM_TRIGGER_STOP: - /* stop audio, disable interrupts */ - value = readl(priv->io + KIRKWOOD_PLAYCTL); - value |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE; - writel(value, priv->io + KIRKWOOD_PLAYCTL); - - value = readl(priv->io + KIRKWOOD_INT_MASK); - value &= ~KIRKWOOD_INT_CAUSE_PLAY_BYTES; - writel(value, priv->io + KIRKWOOD_INT_MASK); - - /* disable all playbacks */ - value = readl(priv->io + KIRKWOOD_PLAYCTL); - value &= ~(KIRKWOOD_PLAYCTL_I2S_EN | KIRKWOOD_PLAYCTL_SPDIF_EN); - writel(value, priv->io + KIRKWOOD_PLAYCTL); - break; - - case SNDRV_PCM_TRIGGER_PAUSE_PUSH: - case SNDRV_PCM_TRIGGER_SUSPEND: - value = readl(priv->io + KIRKWOOD_PLAYCTL); - value |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE; - writel(value, priv->io + KIRKWOOD_PLAYCTL); - break; - - case SNDRV_PCM_TRIGGER_RESUME: - case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: - value = readl(priv->io + KIRKWOOD_PLAYCTL); - value &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE); - writel(value, priv->io + KIRKWOOD_PLAYCTL); - break; - - default: - return -EINVAL; - } - - return 0; -} - -static int kirkwood_i2s_rec_trigger(struct snd_pcm_substream *substream, - int cmd, struct snd_soc_dai *dai) -{ - struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); - unsigned long value; - - value = readl(priv->io + KIRKWOOD_RECCTL); - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - /* stop audio, enable interrupts */ - value = readl(priv->io + KIRKWOOD_RECCTL); - value |= KIRKWOOD_RECCTL_PAUSE; - writel(value, priv->io + KIRKWOOD_RECCTL); - - value = readl(priv->io + KIRKWOOD_INT_MASK); - value |= KIRKWOOD_INT_CAUSE_REC_BYTES; - writel(value, priv->io + KIRKWOOD_INT_MASK); - - /* configure audio & enable i2s record */ - value = readl(priv->io + KIRKWOOD_RECCTL); - value &= ~KIRKWOOD_RECCTL_BURST_MASK; - value &= ~KIRKWOOD_RECCTL_MONO; - value &= ~(KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE - | KIRKWOOD_RECCTL_SPDIF_EN); - - if (priv->burst == 32) - value |= KIRKWOOD_RECCTL_BURST_32; - else - value |= KIRKWOOD_RECCTL_BURST_128; - value |= KIRKWOOD_RECCTL_I2S_EN; - - writel(value, priv->io + KIRKWOOD_RECCTL); - break; - - case SNDRV_PCM_TRIGGER_STOP: - /* stop audio, disable interrupts */ - value = readl(priv->io + KIRKWOOD_RECCTL); - value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE; - writel(value, priv->io + KIRKWOOD_RECCTL); - - value = readl(priv->io + KIRKWOOD_INT_MASK); - value &= ~KIRKWOOD_INT_CAUSE_REC_BYTES; - writel(value, priv->io + KIRKWOOD_INT_MASK); - - /* disable all records */ - value = readl(priv->io + KIRKWOOD_RECCTL); - value &= ~(KIRKWOOD_RECCTL_I2S_EN | KIRKWOOD_RECCTL_SPDIF_EN); - writel(value, priv->io + KIRKWOOD_RECCTL); - break; - - case SNDRV_PCM_TRIGGER_PAUSE_PUSH: - case SNDRV_PCM_TRIGGER_SUSPEND: - value = readl(priv->io + KIRKWOOD_RECCTL); - value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE; - writel(value, priv->io + KIRKWOOD_RECCTL); - break; - - case SNDRV_PCM_TRIGGER_RESUME: - case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: - value = readl(priv->io + KIRKWOOD_RECCTL); - value &= ~(KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE); - writel(value, priv->io + KIRKWOOD_RECCTL); - break; - - default: - return -EINVAL; - } - - return 0; -} - -static int kirkwood_i2s_trigger(struct snd_pcm_substream *substream, int cmd, - struct snd_soc_dai *dai) -{ - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - return kirkwood_i2s_play_trigger(substream, cmd, dai); - else - return kirkwood_i2s_rec_trigger(substream, cmd, dai); - - return 0; -} - -static int kirkwood_i2s_probe(struct snd_soc_dai *dai) -{ - struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai); - unsigned long value; - unsigned int reg_data; - - /* put system in a "safe" state : */ - /* disable audio interrupts */ - writel(0xffffffff, priv->io + KIRKWOOD_INT_CAUSE); - writel(0, priv->io + KIRKWOOD_INT_MASK); - - reg_data = readl(priv->io + 0x1200); - reg_data &= (~(0x333FF8)); - reg_data |= 0x111D18; - writel(reg_data, priv->io + 0x1200); - - msleep(500); - - reg_data = readl(priv->io + 0x1200); - reg_data &= (~(0x333FF8)); - reg_data |= 0x111D18; - writel(reg_data, priv->io + 0x1200); - - /* disable playback/record */ - value = readl(priv->io + KIRKWOOD_PLAYCTL); - value &= ~(KIRKWOOD_PLAYCTL_I2S_EN|KIRKWOOD_PLAYCTL_SPDIF_EN); - writel(value, priv->io + KIRKWOOD_PLAYCTL); - - value = readl(priv->io + KIRKWOOD_RECCTL); - value &= ~(KIRKWOOD_RECCTL_I2S_EN | KIRKWOOD_RECCTL_SPDIF_EN); - writel(value, priv->io + KIRKWOOD_RECCTL); - - return 0; - -} - -static int kirkwood_i2s_remove(struct snd_soc_dai *dai) -{ - return 0; -} - -static const struct snd_soc_dai_ops kirkwood_i2s_dai_ops = { - .startup = kirkwood_i2s_startup, - .trigger = kirkwood_i2s_trigger, - .hw_params = kirkwood_i2s_hw_params, - .set_fmt = kirkwood_i2s_set_fmt, -}; - - -static struct snd_soc_dai_driver kirkwood_i2s_dai = { - .probe = kirkwood_i2s_probe, - .remove = kirkwood_i2s_remove, - .playback = { - .channels_min = 1, - .channels_max = 2, - .rates = KIRKWOOD_I2S_RATES, - .formats = KIRKWOOD_I2S_FORMATS,}, - .capture = { - .channels_min = 1, - .channels_max = 2, - .rates = KIRKWOOD_I2S_RATES, - .formats = KIRKWOOD_I2S_FORMATS,}, - .ops = &kirkwood_i2s_dai_ops, -}; - -static __devinit int kirkwood_i2s_dev_probe(struct platform_device *pdev) -{ - struct resource *mem; - struct kirkwood_asoc_platform_data *data = - pdev->dev.platform_data; - struct kirkwood_dma_data *priv; - int err; - - priv = kzalloc(sizeof(struct kirkwood_dma_data), GFP_KERNEL); - if (!priv) { - dev_err(&pdev->dev, "allocation failed\n"); - err = -ENOMEM; - goto error; - } - dev_set_drvdata(&pdev->dev, priv); - - mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!mem) { - dev_err(&pdev->dev, "platform_get_resource failed\n"); - err = -ENXIO; - goto err_alloc; - } - - priv->mem = request_mem_region(mem->start, SZ_16K, DRV_NAME); - if (!priv->mem) { - dev_err(&pdev->dev, "request_mem_region failed\n"); - err = -EBUSY; - goto err_alloc; - } - - priv->io = ioremap(priv->mem->start, SZ_16K); - if (!priv->io) { - dev_err(&pdev->dev, "ioremap failed\n"); - err = -ENOMEM; - goto err_iomem; - } - - priv->irq = platform_get_irq(pdev, 0); - if (priv->irq <= 0) { - dev_err(&pdev->dev, "platform_get_irq failed\n"); - err = -ENXIO; - goto err_ioremap; - } - - if (!data) { - dev_err(&pdev->dev, "no platform data ?!\n"); - err = -EINVAL; - goto err_ioremap; - } - - priv->burst = data->burst; - - return snd_soc_register_dai(&pdev->dev, &kirkwood_i2s_dai); - -err_ioremap: - iounmap(priv->io); -err_iomem: - release_mem_region(priv->mem->start, SZ_16K); -err_alloc: - kfree(priv); -error: - return err; -} - -static __devexit int kirkwood_i2s_dev_remove(struct platform_device *pdev) -{ - struct kirkwood_dma_data *priv = dev_get_drvdata(&pdev->dev); - - snd_soc_unregister_dai(&pdev->dev); - iounmap(priv->io); - release_mem_region(priv->mem->start, SZ_16K); - kfree(priv); - - return 0; -} - -static struct platform_driver kirkwood_i2s_driver = { - .probe = kirkwood_i2s_dev_probe, - .remove = __devexit_p(kirkwood_i2s_dev_remove), - .driver = { - .name = DRV_NAME, - .owner = THIS_MODULE, - }, -}; - -module_platform_driver(kirkwood_i2s_driver); - -/* Module information */ -MODULE_AUTHOR("Arnaud Patard, <arnaud.patard@rtp-net.org>"); -MODULE_DESCRIPTION("Kirkwood I2S SoC Interface"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:kirkwood-i2s"); |