This patch enables support for the i2s controller available on orion/kirkwood platforms
Signed-off-by: Arnaud Patard apatard@mandriva.com
Index: sound-2.6/sound/soc/orion/Kconfig =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ sound-2.6/sound/soc/orion/Kconfig 2010-05-15 17:06:16.890586343 +0200 @@ -0,0 +1,11 @@ +config SND_ORION_SOC + tristate "SoC Audio for the Marvell Orion/Kirkwood chip" + depends on ARCH_KIRKWOOD || ARCH_ARCH_ORION5X + help + Say Y or M if you want to add support for codecs attached to + the Orion/Kirkwood I2S interface. You will also need + to select the audio interfaces to support below. + +config SND_ORION_SOC_I2S + tristate + Index: sound-2.6/sound/soc/orion/orion-dma.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ sound-2.6/sound/soc/orion/orion-dma.c 2010-05-15 17:06:16.898586075 +0200 @@ -0,0 +1,352 @@ +/* + * orion-dma.c + * + * (c) 2010 Arnaud Patard apatard@mandriva.com + * + * 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/device.h> +#include <linux/io.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/dma-mapping.h> +#include <linux/mbus.h> +#include <sound/soc.h> +#include "orion-dma.h" +#include "orion.h" + +#define ORION_RATES \ + (SNDRV_PCM_RATE_44100 | \ + SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000) +#define ORION_FORMATS \ + (SNDRV_PCM_FMTBIT_S16_LE | \ + SNDRV_PCM_FMTBIT_S24_LE | \ + SNDRV_PCM_FMTBIT_S32_LE) + +struct orion_dma_priv { + struct snd_pcm_substream *play_stream; + struct snd_pcm_substream *rec_stream; + struct orion_dma_data *data; +}; + +static struct snd_pcm_hardware orion_dma_snd_hw = { + .info = (SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_PAUSE), + .formats = ORION_FORMATS, + .rates = ORION_RATES, + .rate_min = 44100, + .rate_max = 96000, + .channels_min = 1, + .channels_max = 2, + .buffer_bytes_max = ORION_SND_MAX_PERIOD_BYTES * ORION_SND_MAX_PERIODS, + .period_bytes_min = ORION_SND_MIN_PERIOD_BYTES, + .period_bytes_max = ORION_SND_MAX_PERIOD_BYTES, + .periods_min = ORION_SND_MIN_PERIODS, + .periods_max = ORION_SND_MAX_PERIODS, + .fifo_size = 0, +}; + +static u64 orion_dma_dmamask = 0xFFFFFFFFUL; + +static irqreturn_t orion_dma_irq(int irq, void *dev_id) +{ + struct orion_dma_priv *prdata = dev_id; + struct orion_dma_data *priv = prdata->data; + unsigned long mask, status, cause; + + mask = readl(priv->io + ORION_INT_MASK); + status = readl(priv->io + ORION_INT_CAUSE) & mask; + + cause = readl(priv->io + ORION_ERR_CAUSE); + if (unlikely(cause)) { + printk(KERN_WARNING "%s: got err interrupt 0x%lx\n", + __func__, cause); + writel(cause, priv->io + ORION_ERR_CAUSE); + return IRQ_HANDLED; + } + + /* we've enabled only bytes interrupts ... */ + if (status & ~(ORION_INT_CAUSE_PLAY_BYTES | \ + ORION_INT_CAUSE_REC_BYTES)) { + printk(KERN_WARNING "%s: unexpected interrupt %lx\n", + __func__, status); + return IRQ_HANDLED; + } + + /* ack int */ + writel(status, priv->io + ORION_INT_CAUSE); + + if (status & ORION_INT_CAUSE_PLAY_BYTES) + snd_pcm_period_elapsed(prdata->play_stream); + + if (status & ORION_INT_CAUSE_REC_BYTES) + snd_pcm_period_elapsed(prdata->rec_stream); + + return IRQ_HANDLED; +} + +static int orion_dma_open(struct snd_pcm_substream *substream) +{ + int err; + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_soc_pcm_runtime *soc_runtime = substream->private_data; + struct snd_soc_dai *cpu_dai = soc_runtime->dai->cpu_dai; + struct orion_dma_data *priv; + struct orion_dma_priv *prdata = cpu_dai->private_data; + + priv = snd_soc_dai_get_dma_data(cpu_dai, substream); + snd_soc_set_runtime_hwparams(substream, &orion_dma_snd_hw); + + /* Ensure that all constraints linked to dma burst are fullfilled */ + err = snd_pcm_hw_constraint_minmax(runtime, + SNDRV_PCM_HW_PARAM_BUFFER_BYTES, + priv->burst * 2, + ORION_AUDIO_BUF_MAX-1); + if (err < 0) + return err; + + err = snd_pcm_hw_constraint_step(runtime, 0, + SNDRV_PCM_HW_PARAM_BUFFER_BYTES, + priv->burst); + if (err < 0) + return err; + + err = snd_pcm_hw_constraint_step(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_PERIOD_BYTES, + priv->burst); + if (err < 0) + return err; + + if (soc_runtime->dai->cpu_dai->private_data == NULL) { + prdata = kzalloc(sizeof(struct orion_dma_priv), GFP_KERNEL); + if (prdata == NULL) + return -ENOMEM; + + prdata->data = priv; + + err = request_irq(priv->irq, orion_dma_irq, IRQF_SHARED, + "orion-i2s", prdata); + if (err) { + kfree(prdata); + return -EBUSY; + } + + soc_runtime->dai->cpu_dai->private_data = prdata; + + /* + * Enable Error interrupts. We're only ack'ing them but + * it's usefull for diagnostics + */ + writel((unsigned long)-1, priv->io + ORION_ERR_MASK); + } + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + prdata->play_stream = substream; + else + prdata->rec_stream = substream; + + return 0; +} + +static int orion_dma_close(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *soc_runtime = substream->private_data; + struct snd_soc_dai *cpu_dai = soc_runtime->dai->cpu_dai; + struct orion_dma_priv *prdata = cpu_dai->private_data; + struct orion_dma_data *priv; + + priv = snd_soc_dai_get_dma_data(cpu_dai, substream); + + if (!prdata || !priv) + return 0; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + prdata->play_stream = NULL; + else + prdata->rec_stream = NULL; + + if (!prdata->play_stream && !prdata->rec_stream) { + writel(0, priv->io + ORION_ERR_MASK); + free_irq(priv->irq, prdata); + kfree(prdata); + soc_runtime->dai->cpu_dai->private_data = NULL; + } + + return 0; +} + +static int orion_dma_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + + snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer); + runtime->dma_bytes = params_buffer_bytes(params); + + return 0; +} + +static int orion_dma_hw_free(struct snd_pcm_substream *substream) +{ + snd_pcm_set_runtime_buffer(substream, NULL); + return 0; +} + +static int orion_dma_prepare(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_soc_pcm_runtime *soc_runtime = substream->private_data; + struct snd_soc_dai *cpu_dai = soc_runtime->dai->cpu_dai; + struct orion_dma_data *priv; + unsigned long size, count; + + priv = snd_soc_dai_get_dma_data(cpu_dai, substream); + + /* compute buffer size in term of "words" as requested in specs */ + size = frames_to_bytes(runtime, runtime->buffer_size); + size = (size>>2)-1; + count = snd_pcm_lib_period_bytes(substream); + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + writel(count, priv->io + ORION_PLAY_BYTE_INT_COUNT); + writel(runtime->dma_addr, priv->io + ORION_PLAY_BUF_ADDR); + writel(size, priv->io + ORION_PLAY_BUF_SIZE); + } else { + writel(count, priv->io + ORION_REC_BYTE_INT_COUNT); + writel(runtime->dma_addr, priv->io + ORION_REC_BUF_ADDR); + writel(size, priv->io + ORION_REC_BUF_SIZE); + } + + + return 0; +} + +static snd_pcm_uframes_t orion_dma_pointer(struct snd_pcm_substream + *substream) +{ + struct snd_soc_pcm_runtime *soc_runtime = substream->private_data; + struct snd_soc_dai *cpu_dai = soc_runtime->dai->cpu_dai; + struct orion_dma_data *priv; + snd_pcm_uframes_t count; + + priv = snd_soc_dai_get_dma_data(cpu_dai, substream); + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + count = bytes_to_frames(substream->runtime, + readl(priv->io + ORION_PLAY_BYTE_COUNT)); + else + count = bytes_to_frames(substream->runtime, + readl(priv->io + ORION_REC_BYTE_COUNT)); + + return count; +} + +struct snd_pcm_ops orion_dma_ops = { + .open = orion_dma_open, + .close = orion_dma_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = orion_dma_hw_params, + .hw_free = orion_dma_hw_free, + .prepare = orion_dma_prepare, + .pointer = orion_dma_pointer, +}; + +static int orion_dma_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 = orion_dma_snd_hw.buffer_bytes_max; + + buf->dev.type = SNDRV_DMA_TYPE_DEV; + buf->dev.dev = pcm->card->dev; + buf->area = dma_alloc_coherent(pcm->card->dev, size, + &buf->addr, GFP_KERNEL); + if (!buf->area) + return -ENOMEM; + buf->bytes = size; + buf->private_data = NULL; + + return 0; +} + +static int orion_dma_new(struct snd_card *card, + struct snd_soc_dai *dai, struct snd_pcm *pcm) +{ + int ret; + + if (!card->dev->dma_mask) + card->dev->dma_mask = &orion_dma_dmamask; + if (!card->dev->coherent_dma_mask) + card->dev->coherent_dma_mask = 0xffffffff; + + if (dai->playback.channels_min) { + ret = orion_dma_preallocate_dma_buffer(pcm, + SNDRV_PCM_STREAM_PLAYBACK); + if (ret) + return ret; + } + + if (dai->capture.channels_min) { + ret = orion_dma_preallocate_dma_buffer(pcm, + SNDRV_PCM_STREAM_CAPTURE); + if (ret) + return ret; + } + + return 0; +} + +static void orion_dma_free_dma_buffers(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_coherent(pcm->card->dev, buf->bytes, + buf->area, buf->addr); + buf->area = NULL; + } +} + +struct snd_soc_platform orion_soc_platform = { + .name = "orion-dma", + .pcm_ops = &orion_dma_ops, + .pcm_new = orion_dma_new, + .pcm_free = orion_dma_free_dma_buffers, +}; +EXPORT_SYMBOL_GPL(orion_soc_platform); + +static int __init orion_soc_platform_init(void) +{ + return snd_soc_register_platform(&orion_soc_platform); +} +module_init(orion_soc_platform_init); + +static void __exit orion_soc_platform_exit(void) +{ + snd_soc_unregister_platform(&orion_soc_platform); +} +module_exit(orion_soc_platform_exit); + +MODULE_AUTHOR("Arnaud Patard apatard@mandriva.com"); +MODULE_DESCRIPTION("Marvell Orion/Kirkwood Audio DMA module"); +MODULE_LICENSE("GPL"); + Index: sound-2.6/sound/soc/orion/orion.h =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ sound-2.6/sound/soc/orion/orion.h 2010-05-15 17:06:16.938086518 +0200 @@ -0,0 +1,126 @@ +/* + * orion.h + * + * (c) 2010 Arnaud Patard apatard@mandriva.com + * + * 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. + */ + +#ifndef _ORION_AUDIO_H +#define _ORION_AUDIO_H + +#define ORION_RECORD_WIN 0 +#define ORION_PLAYBACK_WIN 1 +#define ORION_MAX_AUDIO_WIN 2 + +#define ORION_AUDIO_WIN_BASE_REG(win) (0xA00 + ((win)<<3)) +#define ORION_AUDIO_WIN_CTRL_REG(win) (0xA04 + ((win)<<3)) + + +#define ORION_RECCTL 0x1000 +#define ORION_RECCTL_SPDIF_EN (1<<11) +#define ORION_RECCTL_I2S_EN (1<<10) +#define ORION_RECCTL_PAUSE (1<<9) +#define ORION_RECCTL_MUTE (1<<8) +#define ORION_RECCTL_BURST_MASK (3<<5) +#define ORION_RECCTL_BURST_128 (2<<5) +#define ORION_RECCTL_BURST_32 (1<<5) +#define ORION_RECCTL_MONO (1<<4) +#define ORION_RECCTL_MONO_CHAN_RIGHT (1<<3) +#define ORION_RECCTL_MONO_CHAN_LEFT (0<<3) +#define ORION_RECCTL_SIZE_MASK (7<<0) +#define ORION_RECCTL_SIZE_16 (7<<0) +#define ORION_RECCTL_SIZE_16_C (3<<0) +#define ORION_RECCTL_SIZE_20 (2<<0) +#define ORION_RECCTL_SIZE_24 (1<<0) +#define ORION_RECCTL_SIZE_32 (0<<0) + +#define ORION_REC_BUF_ADDR 0x1004 +#define ORION_REC_BUF_SIZE 0x1008 +#define ORION_REC_BYTE_COUNT 0x100C + +#define ORION_PLAYCTL 0x1100 +#define ORION_PLAYCTL_PLAY_BUSY (1<<16) +#define ORION_PLAYCTL_BURST_MASK (3<<11) +#define ORION_PLAYCTL_BURST_128 (2<<11) +#define ORION_PLAYCTL_BURST_32 (1<<11) +#define ORION_PLAYCTL_PAUSE (1<<9) +#define ORION_PLAYCTL_SPDIF_MUTE (1<<8) +#define ORION_PLAYCTL_I2S_MUTE (1<<7) +#define ORION_PLAYCTL_SPDIF_EN (1<<4) +#define ORION_PLAYCTL_I2S_EN (1<<3) +#define ORION_PLAYCTL_SIZE_MASK (7<<0) +#define ORION_PLAYCTL_SIZE_16 (7<<0) +#define ORION_PLAYCTL_SIZE_16_C (3<<0) +#define ORION_PLAYCTL_SIZE_20 (2<<0) +#define ORION_PLAYCTL_SIZE_24 (1<<0) +#define ORION_PLAYCTL_SIZE_32 (0<<0) + +#define ORION_PLAY_BUF_ADDR 0x1104 +#define ORION_PLAY_BUF_SIZE 0x1108 +#define ORION_PLAY_BYTE_COUNT 0x110C + +#define ORION_DCO_CTL 0x1204 +#define ORION_DCO_CTL_OFFSET_MASK (0xFFF<<2) +#define ORION_DCO_CTL_OFFSET_0 (0x800<<2) +#define ORION_DCO_CTL_FREQ_MASK (3<<0) +#define ORION_DCO_CTL_FREQ_11 (0<<0) +#define ORION_DCO_CTL_FREQ_12 (1<<0) +#define ORION_DCO_CTL_FREQ_24 (2<<0) + +#define ORION_DCO_SPCR_STATUS 0x120c +#define ORION_DCO_SPCR_STATUS_DCO_LOCK (1<<16) + +#define ORION_ERR_CAUSE 0x1300 +#define ORION_ERR_MASK 0x1304 + +#define ORION_INT_CAUSE 0x1308 +#define ORION_INT_MASK 0x130C +#define ORION_INT_CAUSE_PLAY_BYTES (1<<14) +#define ORION_INT_CAUSE_REC_BYTES (1<<13) +#define ORION_INT_CAUSE_DMA_PLAY_END (1<<7) +#define ORION_INT_CAUSE_DMA_PLAY_3Q (1<<6) +#define ORION_INT_CAUSE_DMA_PLAY_HALF (1<<5) +#define ORION_INT_CAUSE_DMA_PLAY_1Q (1<<4) +#define ORION_INT_CAUSE_DMA_REC_END (1<<3) +#define ORION_INT_CAUSE_DMA_REC_3Q (1<<2) +#define ORION_INT_CAUSE_DMA_REC_HALF (1<<1) +#define ORION_INT_CAUSE_DMA_REC_1Q (1<<0) + +#define ORION_REC_BYTE_INT_COUNT 0x1310 +#define ORION_PLAY_BYTE_INT_COUNT 0x1314 +#define ORION_BYTE_INT_COUNT_MASK 0xffffff + +#define ORION_I2S_PLAYCTL 0x2508 +#define ORION_I2S_RECCTL 0x2408 +#define ORION_I2S_CTL_JUST_MASK (0xf<<26) +#define ORION_I2S_CTL_LJ (0<<26) +#define ORION_I2S_CTL_I2S (5<<26) +#define ORION_I2S_CTL_RJ (8<<26) +#define ORION_I2S_CTL_SIZE_MASK (3<<30) +#define ORION_I2S_CTL_SIZE_16 (3<<30) +#define ORION_I2S_CTL_SIZE_20 (2<<30) +#define ORION_I2S_CTL_SIZE_24 (1<<30) +#define ORION_I2S_CTL_SIZE_32 (0<<30) + +#define ORION_AUDIO_BUF_MAX (16*1024*1024) + +/* Theses values come from the marvell alsa driver */ +/* need to find where they come from */ +#define ORION_SND_MIN_PERIODS 8 +#define ORION_SND_MAX_PERIODS 16 +#define ORION_SND_MIN_PERIOD_BYTES 0x4000 +#define ORION_SND_MAX_PERIOD_BYTES 0x4000 + +struct orion_dma_data { + struct resource *mem; + void __iomem *io; + int irq; + int burst; + struct mbus_dram_target_info *dram; +}; + +#endif Index: sound-2.6/sound/soc/orion/orion-i2s.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ sound-2.6/sound/soc/orion/orion-i2s.c 2010-05-15 17:07:11.582586475 +0200 @@ -0,0 +1,510 @@ +/* + * orion-i2s.c + * + * (c) 2010 Arnaud Patard apatard@mandriva.com + * + * 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 "orion-i2s.h" +#include "orion.h" + +#define DRV_NAME "orion-i2s" + +#define ORION_I2S_RATES \ + (SNDRV_PCM_RATE_44100 | \ + SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000) +#define ORION_I2S_FORMATS \ + (SNDRV_PCM_FMTBIT_S16_LE | \ + SNDRV_PCM_FMTBIT_S24_LE | \ + SNDRV_PCM_FMTBIT_S32_LE) + + +struct snd_soc_dai orion_i2s_dai; +static struct orion_dma_data *priv; + +static int orion_i2s_set_fmt(struct snd_soc_dai *cpu_dai, + unsigned int fmt) +{ + unsigned long mask; + unsigned long value; + + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_RIGHT_J: + mask = ORION_I2S_CTL_RJ; + break; + case SND_SOC_DAIFMT_LEFT_J: + mask = ORION_I2S_CTL_LJ; + break; + case SND_SOC_DAIFMT_I2S: + mask = ORION_I2S_CTL_I2S; + break; + default: + return -EINVAL; + } + + /* + * Set same format for playback and record + * This avoids some troubles. + */ + value = readl(priv->io+ORION_I2S_PLAYCTL); + value &= ~ORION_I2S_CTL_JUST_MASK; + value |= mask; + writel(value, priv->io+ORION_I2S_PLAYCTL); + + value = readl(priv->io+ORION_I2S_RECCTL); + value &= ~ORION_I2S_CTL_JUST_MASK; + value |= mask; + writel(value, priv->io+ORION_I2S_RECCTL); + + return 0; +} + +static inline void orion_set_dco(void __iomem *io, unsigned long rate) +{ + unsigned long value; + + value = ORION_DCO_CTL_OFFSET_0; + switch (rate) { + default: + case 44100: + value |= ORION_DCO_CTL_FREQ_11; + break; + case 48000: + value |= ORION_DCO_CTL_FREQ_12; + break; + case 96000: + value |= ORION_DCO_CTL_FREQ_24; + break; + } + writel(value, io + ORION_DCO_CTL); + + /* wait for dco locked */ + do { + cpu_relax(); + value = readl(io + ORION_DCO_SPCR_STATUS); + value &= ORION_DCO_SPCR_STATUS; + } while (value == 0); +} + +static int orion_i2s_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + unsigned int i2s_reg, reg; + unsigned long i2s_value, value; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + i2s_reg = ORION_I2S_PLAYCTL; + reg = ORION_PLAYCTL; + } else { + i2s_reg = ORION_I2S_RECCTL; + reg = ORION_RECCTL; + } + + /* set dco conf */ + orion_set_dco(priv->io, params_rate(params)); + + i2s_value = readl(priv->io+i2s_reg); + i2s_value &= ~ORION_I2S_CTL_SIZE_MASK; + + value = readl(priv->io+reg); + value &= ~ORION_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 |= ORION_I2S_CTL_SIZE_16; + value |= ORION_PLAYCTL_SIZE_16_C; + break; + /* + * doesn't work... S20_3LE != orion/kirkwood 20bit format ? + * + case SNDRV_PCM_FORMAT_S20_3LE: + i2s_value |= ORION_I2S_CTL_SIZE_20; + value |= ORION_PLAYCTL_SIZE_20; + break; + */ + case SNDRV_PCM_FORMAT_S24_LE: + i2s_value |= ORION_I2S_CTL_SIZE_24; + value |= ORION_PLAYCTL_SIZE_24; + break; + case SNDRV_PCM_FORMAT_S32_LE: + i2s_value |= ORION_I2S_CTL_SIZE_32; + value |= ORION_PLAYCTL_SIZE_32; + break; + default: + return -EINVAL; + } + writel(i2s_value, priv->io+i2s_reg); + writel(value, priv->io+reg); + + return 0; +} + +static int orion_i2s_play_trigger(struct snd_pcm_substream *substream, + int cmd, struct snd_soc_dai *dai) +{ + unsigned long value; + + /* + * specs says ORION_PLAYCTL must be read 2 times before + * changing it. So read 1 time here and 1 later. + */ + value = readl(priv->io + ORION_PLAYCTL); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + /* stop audio, enable interrupts */ + value = readl(priv->io + ORION_PLAYCTL); + value |= ORION_PLAYCTL_PAUSE; + writel(value, priv->io + ORION_PLAYCTL); + + value = readl(priv->io + ORION_INT_MASK); + value |= ORION_INT_CAUSE_PLAY_BYTES; + writel(value, priv->io + ORION_INT_MASK); + + /* configure audio & enable i2s playback */ + value = readl(priv->io + ORION_PLAYCTL); + value &= ~ORION_PLAYCTL_BURST_MASK; + value &= ~(ORION_PLAYCTL_PAUSE|ORION_PLAYCTL_SPDIF_EN); + + if (priv->burst == 32) + value |= ORION_PLAYCTL_BURST_32; + else + value |= ORION_PLAYCTL_BURST_128; + value |= ORION_PLAYCTL_I2S_EN; + writel(value, priv->io + ORION_PLAYCTL); + break; + + case SNDRV_PCM_TRIGGER_STOP: + /* stop audio, disable interrupts */ + value = readl(priv->io + ORION_PLAYCTL); + value |= ORION_PLAYCTL_PAUSE; + writel(value, priv->io + ORION_PLAYCTL); + + value = readl(priv->io + ORION_INT_MASK); + value &= ~ORION_INT_CAUSE_PLAY_BYTES; + writel(value, priv->io + ORION_INT_MASK); + + /* disable all playbacks */ + value = readl(priv->io + ORION_PLAYCTL); + value &= ~(ORION_PLAYCTL_I2S_EN | ORION_PLAYCTL_SPDIF_EN); + writel(value, priv->io + ORION_PLAYCTL); + break; + + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + case SNDRV_PCM_TRIGGER_SUSPEND: + value = readl(priv->io + ORION_PLAYCTL); + value |= ORION_PLAYCTL_PAUSE; + writel(value, priv->io + ORION_PLAYCTL); + break; + + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + value = readl(priv->io + ORION_PLAYCTL); + value &= ~ORION_PLAYCTL_PAUSE; + writel(value, priv->io + ORION_PLAYCTL); + break; + + default: + return -EINVAL; + } + + return 0; +} + +static int orion_i2s_rec_trigger(struct snd_pcm_substream *substream, + int cmd, struct snd_soc_dai *dai) +{ + unsigned long value; + + value = readl(priv->io + ORION_RECCTL); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + /* stop audio, enable interrupts */ + value = readl(priv->io + ORION_RECCTL); + value |= ORION_RECCTL_PAUSE; + writel(value, priv->io + ORION_RECCTL); + + value = readl(priv->io + ORION_INT_MASK); + value |= ORION_INT_CAUSE_REC_BYTES; + writel(value, priv->io + ORION_INT_MASK); + + /* configure audio & enable i2s record */ + value = readl(priv->io + ORION_RECCTL); + value &= ~ORION_RECCTL_BURST_MASK; + value &= ~ORION_RECCTL_MONO; + value &= ~(ORION_RECCTL_PAUSE | ORION_RECCTL_SPDIF_EN); + + if (priv->burst == 32) + value |= ORION_RECCTL_BURST_32; + else + value |= ORION_RECCTL_BURST_128; + value |= ORION_RECCTL_I2S_EN; + + writel(value, priv->io + ORION_RECCTL); + break; + + case SNDRV_PCM_TRIGGER_STOP: + /* stop audio, disable interrupts */ + value = readl(priv->io + ORION_RECCTL); + value |= ORION_RECCTL_PAUSE; + writel(value, priv->io + ORION_RECCTL); + + value = readl(priv->io + ORION_INT_MASK); + value &= ~ORION_INT_CAUSE_REC_BYTES; + writel(value, priv->io + ORION_INT_MASK); + + /* disable all records */ + value = readl(priv->io + ORION_RECCTL); + value &= ~(ORION_RECCTL_I2S_EN | ORION_RECCTL_SPDIF_EN); + writel(value, priv->io + ORION_RECCTL); + break; + + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + case SNDRV_PCM_TRIGGER_SUSPEND: + value = readl(priv->io + ORION_RECCTL); + value |= ORION_RECCTL_PAUSE; + writel(value, priv->io + ORION_RECCTL); + break; + + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + value = readl(priv->io + ORION_RECCTL); + value &= ~ORION_RECCTL_PAUSE; + writel(value, priv->io + ORION_RECCTL); + break; + + default: + return -EINVAL; + break; + } + + return 0; +} + +static int orion_i2s_trigger(struct snd_pcm_substream *substream, int cmd, + struct snd_soc_dai *dai) +{ + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + return orion_i2s_play_trigger(substream, cmd, dai); + else + return orion_i2s_rec_trigger(substream, cmd, dai); + + return 0; +} + +static void orion_i2s_conf_mbus_windows(void __iomem *base, + struct mbus_dram_target_info *dram) +{ + int win_num; + + /* First disable and clear windows */ + for (win_num = 0; win_num < ORION_MAX_AUDIO_WIN; win_num++) { + writel(0, base + ORION_AUDIO_WIN_CTRL_REG(win_num)); + writel(0, base + ORION_AUDIO_WIN_BASE_REG(win_num)); + } + + /* Setup windows for DDR */ + for (win_num = 0; win_num < ORION_MAX_AUDIO_WIN; win_num++) { + /* We will set the Window to DRAM_CS1 in default */ + struct mbus_dram_window *cs = &dram->cs[1]; + writel(cs->base & 0xffff0000, + base + ORION_AUDIO_WIN_BASE_REG(win_num)); + writel(((cs->size - 1) & 0xffff0000) | + (cs->mbus_attr << 8) | + (dram->mbus_dram_target_id << 4) | 1, + base + ORION_AUDIO_WIN_CTRL_REG(win_num)); + } +} + +static int orion_i2s_probe(struct platform_device *pdev, + struct snd_soc_dai *dai) +{ + unsigned long value; + unsigned int reg_data; + + /* put system in a "safe" state : */ + /* disable audio interrupts */ + writel(0xffffffff, priv->io + ORION_INT_CAUSE); + writel(0, priv->io + ORION_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 + ORION_PLAYCTL); + value &= ~(ORION_PLAYCTL_I2S_EN|ORION_PLAYCTL_SPDIF_EN); + writel(value, priv->io + ORION_PLAYCTL); + + value = readl(priv->io + ORION_RECCTL); + value &= ~(ORION_RECCTL_I2S_EN | ORION_RECCTL_SPDIF_EN); + writel(value, priv->io + ORION_RECCTL); + + return 0; + +} + +static void orion_i2s_remove(struct platform_device *pdev, + struct snd_soc_dai *dai) +{ +} + +static struct snd_soc_dai_ops orion_i2s_dai_ops = { + .trigger = orion_i2s_trigger, + .hw_params = orion_i2s_hw_params, + .set_fmt = orion_i2s_set_fmt, +}; + + +struct snd_soc_dai orion_i2s_dai = { + .name = DRV_NAME, + .id = 0, + .probe = orion_i2s_probe, + .remove = orion_i2s_remove, + .playback = { + .channels_min = 1, + .channels_max = 2, + .rates = ORION_I2S_RATES, + .formats = ORION_I2S_FORMATS,}, + .capture = { + .channels_min = 1, + .channels_max = 2, + .rates = ORION_I2S_RATES, + .formats = ORION_I2S_FORMATS,}, + .ops = &orion_i2s_dai_ops, +}; +EXPORT_SYMBOL_GPL(orion_i2s_dai); + +static __devinit int orion_i2s_dev_probe(struct platform_device *pdev) +{ + struct resource *mem; + struct orion_asoc_platform_data *data = + pdev->dev.platform_data; + int err; + + priv = kzalloc(sizeof(struct orion_dma_data), GFP_KERNEL); + if (!priv) { + dev_err(&pdev->dev, "allocation failed\n"); + err = -ENOMEM; + goto error; + } + + 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 error; + } + + 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 || !data->dram) { + dev_err(&pdev->dev, "no platform data ?!\n"); + err = -EINVAL; + goto err_ioremap; + } + + orion_i2s_conf_mbus_windows(priv->io, data->dram); + priv->dram = data->dram; + priv->burst = data->burst; + + orion_i2s_dai.capture.dma_data = priv; + orion_i2s_dai.playback.dma_data = priv; + + return snd_soc_register_dai(&orion_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 orion_i2s_dev_remove(struct platform_device *pdev) +{ + if (priv) { + iounmap(priv->io); + release_mem_region(priv->mem->start, SZ_16K); + kfree(priv); + } + snd_soc_unregister_dai(&orion_i2s_dai); + return 0; +} + +static struct platform_driver orion_i2s_driver = { + .probe = orion_i2s_dev_probe, + .remove = orion_i2s_dev_remove, + .driver = { + .name = DRV_NAME, + .owner = THIS_MODULE, + }, +}; + +static int __init orion_i2s_init(void) +{ + return platform_driver_register(&orion_i2s_driver); +} +module_init(orion_i2s_init); + +static void __exit orion_i2s_exit(void) +{ + platform_driver_unregister(&orion_i2s_driver); +} +module_exit(orion_i2s_exit); + +/* Module information */ +MODULE_AUTHOR("Arnaud Patard, apatard@mandriva.com"); +MODULE_DESCRIPTION("Orion/Kirkwood I2S SoC Interface"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:orion-i2s"); Index: sound-2.6/sound/soc/orion/Makefile =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ sound-2.6/sound/soc/orion/Makefile 2010-05-15 17:06:16.962086209 +0200 @@ -0,0 +1,6 @@ +snd-soc-orion-objs := orion-dma.o +snd-soc-orion-i2s-objs := orion-i2s.o + +obj-$(CONFIG_SND_ORION_SOC) += snd-soc-orion.o +obj-$(CONFIG_SND_ORION_SOC_I2S) += snd-soc-orion-i2s.o + Index: sound-2.6/sound/soc/Makefile =================================================================== --- sound-2.6.orig/sound/soc/Makefile 2010-05-15 17:02:58.526586319 +0200 +++ sound-2.6/sound/soc/Makefile 2010-05-15 17:06:16.970086495 +0200 @@ -8,6 +8,7 @@ obj-$(CONFIG_SND_SOC) += blackfin/ obj-$(CONFIG_SND_SOC) += davinci/ obj-$(CONFIG_SND_SOC) += fsl/ obj-$(CONFIG_SND_SOC) += imx/ +obj-$(CONFIG_SND_SOC) += orion/ obj-$(CONFIG_SND_SOC) += omap/ obj-$(CONFIG_SND_SOC) += pxa/ obj-$(CONFIG_SND_SOC) += s3c24xx/ Index: sound-2.6/sound/soc/orion/orion-dma.h =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ sound-2.6/sound/soc/orion/orion-dma.h 2010-05-15 17:06:16.978086205 +0200 @@ -0,0 +1,17 @@ +/* + * orion-dma.h + * + * (c) 2010 Arnaud Patard apatard@mandriva.com + * + * 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. + */ + +#ifndef _ORION_DMA_H +#define _ORION_DMA_H + +extern struct snd_soc_platform orion_soc_platform; + +#endif Index: sound-2.6/sound/soc/orion/orion-i2s.h =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ sound-2.6/sound/soc/orion/orion-i2s.h 2010-05-15 17:06:16.994086084 +0200 @@ -0,0 +1,17 @@ +/* + * orion-i2s.h + * + * (c) 2010 Arnaud Patard apatard@mandriva.com + * + * 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. + */ + +#ifndef _ORION_I2S_H +#define _ORION_I2S_H + +extern struct snd_soc_dai orion_i2s_dai; + +#endif Index: sound-2.6/sound/soc/Kconfig =================================================================== --- sound-2.6.orig/sound/soc/Kconfig 2010-05-15 17:02:58.506587369 +0200 +++ sound-2.6/sound/soc/Kconfig 2010-05-15 17:06:17.006088097 +0200 @@ -30,6 +30,7 @@ source "sound/soc/blackfin/Kconfig" source "sound/soc/davinci/Kconfig" source "sound/soc/fsl/Kconfig" source "sound/soc/imx/Kconfig" +source "sound/soc/orion/Kconfig" source "sound/soc/omap/Kconfig" source "sound/soc/pxa/Kconfig" source "sound/soc/s3c24xx/Kconfig"