+++ /dev/null
-/*
- * mx1_mx2-pcm.c -- ALSA SoC interface for Freescale i.MX1x, i.MX2x CPUs
- *
- * Copyright 2009 Vista Silicon S.L.
- * Author: Javier Martin
- * javier.martin@vista-silicon.com
- *
- * Based on mxc-pcm.c by Liam Girdwood.
- *
- * 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.
- *
- *
- */
-
-#include <linux/module.h>
-#include <linux/init.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/dma.h>
-#include <mach/hardware.h>
-#include <mach/dma-mx1-mx2.h>
-
-#include "mx1_mx2-pcm.h"
-
-
-static const struct snd_pcm_hardware mx1_mx2_pcm_hardware = {
- .info = (SNDRV_PCM_INFO_INTERLEAVED |
- SNDRV_PCM_INFO_BLOCK_TRANSFER |
- SNDRV_PCM_INFO_MMAP |
- SNDRV_PCM_INFO_MMAP_VALID),
- .formats = SNDRV_PCM_FMTBIT_S16_LE,
- .buffer_bytes_max = 32 * 1024,
- .period_bytes_min = 64,
- .period_bytes_max = 8 * 1024,
- .periods_min = 2,
- .periods_max = 255,
- .fifo_size = 0,
-};
-
-struct mx1_mx2_runtime_data {
- int dma_ch;
- int active;
- unsigned int period;
- unsigned int periods;
- int tx_spin;
- spinlock_t dma_lock;
- struct mx1_mx2_pcm_dma_params *dma_params;
-};
-
-
-/**
- * This function stops the current dma transfer for playback
- * and clears the dma pointers.
- *
- * @param substream pointer to the structure of the current stream.
- *
- */
-static int audio_stop_dma(struct snd_pcm_substream *substream)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct mx1_mx2_runtime_data *prtd = runtime->private_data;
- unsigned long flags;
-
- spin_lock_irqsave(&prtd->dma_lock, flags);
-
- pr_debug("%s\n", __func__);
-
- prtd->active = 0;
- prtd->period = 0;
- prtd->periods = 0;
-
- /* this stops the dma channel and clears the buffer ptrs */
-
- imx_dma_disable(prtd->dma_ch);
-
- spin_unlock_irqrestore(&prtd->dma_lock, flags);
-
- return 0;
-}
-
-/**
- * This function is called whenever a new audio block needs to be
- * transferred to the codec. The function receives the address and the size
- * of the new block and start a new DMA transfer.
- *
- * @param substream pointer to the structure of the current stream.
- *
- */
-static int dma_new_period(struct snd_pcm_substream *substream)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct mx1_mx2_runtime_data *prtd = runtime->private_data;
- unsigned int dma_size;
- unsigned int offset;
- int ret = 0;
- dma_addr_t mem_addr;
- unsigned int dev_addr;
-
- if (prtd->active) {
- dma_size = frames_to_bytes(runtime, runtime->period_size);
- offset = dma_size * prtd->period;
-
- pr_debug("%s: period (%d) out of (%d)\n", __func__,
- prtd->period,
- runtime->periods);
- pr_debug("period_size %d frames\n offset %d bytes\n",
- (unsigned int)runtime->period_size,
- offset);
- pr_debug("dma_size %d bytes\n", dma_size);
-
- snd_BUG_ON(dma_size > mx1_mx2_pcm_hardware.period_bytes_max);
-
- mem_addr = (dma_addr_t)(runtime->dma_addr + offset);
- dev_addr = prtd->dma_params->per_address;
- pr_debug("%s: mem_addr is %x\n dev_addr is %x\n",
- __func__, mem_addr, dev_addr);
-
- ret = imx_dma_setup_single(prtd->dma_ch, mem_addr,
- dma_size, dev_addr,
- prtd->dma_params->transfer_type);
- if (ret < 0) {
- printk(KERN_ERR "Error %d configuring DMA\n", ret);
- return ret;
- }
- imx_dma_enable(prtd->dma_ch);
-
- pr_debug("%s: transfer enabled\nmem_addr = %x\n",
- __func__, (unsigned int) mem_addr);
- pr_debug("dev_addr = %x\ndma_size = %d\n",
- (unsigned int) dev_addr, dma_size);
-
- prtd->tx_spin = 1; /* FGA little trick to retrieve DMA pos */
- prtd->period++;
- prtd->period %= runtime->periods;
- }
- return ret;
-}
-
-
-/**
- * This is a callback which will be called
- * when a TX transfer finishes. The call occurs
- * in interrupt context.
- *
- * @param dat pointer to the structure of the current stream.
- *
- */
-static void audio_dma_irq(int channel, void *data)
-{
- struct snd_pcm_substream *substream;
- struct snd_pcm_runtime *runtime;
- struct mx1_mx2_runtime_data *prtd;
- unsigned int dma_size;
- unsigned int previous_period;
- unsigned int offset;
-
- substream = data;
- runtime = substream->runtime;
- prtd = runtime->private_data;
- previous_period = prtd->periods;
- dma_size = frames_to_bytes(runtime, runtime->period_size);
- offset = dma_size * previous_period;
-
- prtd->tx_spin = 0;
- prtd->periods++;
- prtd->periods %= runtime->periods;
-
- pr_debug("%s: irq per %d offset %x\n", __func__, prtd->periods, offset);
-
- /*
- * If we are getting a callback for an active stream then we inform
- * the PCM middle layer we've finished a period
- */
- if (prtd->active)
- snd_pcm_period_elapsed(substream);
-
- /*
- * Trig next DMA transfer
- */
- dma_new_period(substream);
-}
-
-/**
- * This function configures the hardware to allow audio
- * playback operations. It is called by ALSA framework.
- *
- * @param substream pointer to the structure of the current stream.
- *
- * @return 0 on success, -1 otherwise.
- */
-static int
-snd_mx1_mx2_prepare(struct snd_pcm_substream *substream)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct mx1_mx2_runtime_data *prtd = runtime->private_data;
-
- prtd->period = 0;
- prtd->periods = 0;
-
- return 0;
-}
-
-static int mx1_mx2_pcm_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *hw_params)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- int ret;
-
- ret = snd_pcm_lib_malloc_pages(substream,
- params_buffer_bytes(hw_params));
- if (ret < 0) {
- printk(KERN_ERR "%s: Error %d failed to malloc pcm pages \n",
- __func__, ret);
- return ret;
- }
-
- pr_debug("%s: snd_imx1_mx2_audio_hw_params runtime->dma_addr 0x(%x)\n",
- __func__, (unsigned int)runtime->dma_addr);
- pr_debug("%s: snd_imx1_mx2_audio_hw_params runtime->dma_area 0x(%x)\n",
- __func__, (unsigned int)runtime->dma_area);
- pr_debug("%s: snd_imx1_mx2_audio_hw_params runtime->dma_bytes 0x(%x)\n",
- __func__, (unsigned int)runtime->dma_bytes);
-
- return ret;
-}
-
-static int mx1_mx2_pcm_hw_free(struct snd_pcm_substream *substream)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct mx1_mx2_runtime_data *prtd = runtime->private_data;
-
- imx_dma_free(prtd->dma_ch);
-
- snd_pcm_lib_free_pages(substream);
-
- return 0;
-}
-
-static int mx1_mx2_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
-{
- struct mx1_mx2_runtime_data *prtd = substream->runtime->private_data;
- int ret = 0;
-
- switch (cmd) {
- case SNDRV_PCM_TRIGGER_START:
- prtd->tx_spin = 0;
- /* requested stream startup */
- prtd->active = 1;
- pr_debug("%s: starting dma_new_period\n", __func__);
- ret = dma_new_period(substream);
- break;
- case SNDRV_PCM_TRIGGER_STOP:
- /* requested stream shutdown */
- pr_debug("%s: stopping dma transfer\n", __func__);
- ret = audio_stop_dma(substream);
- break;
- default:
- ret = -EINVAL;
- break;
- }
-
- return ret;
-}
-
-static snd_pcm_uframes_t
-mx1_mx2_pcm_pointer(struct snd_pcm_substream *substream)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct mx1_mx2_runtime_data *prtd = runtime->private_data;
- unsigned int offset = 0;
-
- /* tx_spin value is used here to check if a transfer is active */
- if (prtd->tx_spin) {
- offset = (runtime->period_size * (prtd->periods)) +
- (runtime->period_size >> 1);
- if (offset >= runtime->buffer_size)
- offset = runtime->period_size >> 1;
- } else {
- offset = (runtime->period_size * (prtd->periods));
- if (offset >= runtime->buffer_size)
- offset = 0;
- }
- pr_debug("%s: pointer offset %x\n", __func__, offset);
-
- return offset;
-}
-
-static int mx1_mx2_pcm_open(struct snd_pcm_substream *substream)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct mx1_mx2_runtime_data *prtd;
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct mx1_mx2_pcm_dma_params *dma_data = rtd->dai->cpu_dai->dma_data;
- int ret;
-
- snd_soc_set_runtime_hwparams(substream, &mx1_mx2_pcm_hardware);
-
- ret = snd_pcm_hw_constraint_integer(runtime,
- SNDRV_PCM_HW_PARAM_PERIODS);
- if (ret < 0)
- return ret;
-
- prtd = kzalloc(sizeof(struct mx1_mx2_runtime_data), GFP_KERNEL);
- if (prtd == NULL) {
- ret = -ENOMEM;
- goto out;
- }
-
- runtime->private_data = prtd;
-
- if (!dma_data)
- return -ENODEV;
-
- prtd->dma_params = dma_data;
-
- pr_debug("%s: Requesting dma channel (%s)\n", __func__,
- prtd->dma_params->name);
- ret = imx_dma_request_by_prio(prtd->dma_params->name, DMA_PRIO_HIGH);
- if (ret < 0) {
- printk(KERN_ERR "Error %d requesting dma channel\n", ret);
- return ret;
- }
- prtd->dma_ch = ret;
- imx_dma_config_burstlen(prtd->dma_ch,
- prtd->dma_params->watermark_level);
-
- ret = imx_dma_config_channel(prtd->dma_ch,
- prtd->dma_params->per_config,
- prtd->dma_params->mem_config,
- prtd->dma_params->event_id, 0);
-
- if (ret) {
- pr_debug(KERN_ERR "Error %d configuring dma channel %d\n",
- ret, prtd->dma_ch);
- return ret;
- }
-
- pr_debug("%s: Setting tx dma callback function\n", __func__);
- ret = imx_dma_setup_handlers(prtd->dma_ch,
- audio_dma_irq, NULL,
- (void *)substream);
- if (ret < 0) {
- printk(KERN_ERR "Error %d setting dma callback function\n", ret);
- return ret;
- }
- return 0;
-
- out:
- return ret;
-}
-
-static int mx1_mx2_pcm_close(struct snd_pcm_substream *substream)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct mx1_mx2_runtime_data *prtd = runtime->private_data;
-
- kfree(prtd);
-
- return 0;
-}
-
-static int mx1_mx2_pcm_mmap(struct snd_pcm_substream *substream,
- struct vm_area_struct *vma)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- return dma_mmap_writecombine(substream->pcm->card->dev, vma,
- runtime->dma_area,
- runtime->dma_addr,
- runtime->dma_bytes);
-}
-
-static struct snd_pcm_ops mx1_mx2_pcm_ops = {
- .open = mx1_mx2_pcm_open,
- .close = mx1_mx2_pcm_close,
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = mx1_mx2_pcm_hw_params,
- .hw_free = mx1_mx2_pcm_hw_free,
- .prepare = snd_mx1_mx2_prepare,
- .trigger = mx1_mx2_pcm_trigger,
- .pointer = mx1_mx2_pcm_pointer,
- .mmap = mx1_mx2_pcm_mmap,
-};
-
-static u64 mx1_mx2_pcm_dmamask = 0xffffffff;
-
-static int mx1_mx2_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 = mx1_mx2_pcm_hardware.buffer_bytes_max;
- buf->dev.type = SNDRV_DMA_TYPE_DEV;
- buf->dev.dev = pcm->card->dev;
- buf->private_data = NULL;
-
- /* Reserve uncached-buffered memory area for DMA */
- buf->area = dma_alloc_writecombine(pcm->card->dev, size,
- &buf->addr, GFP_KERNEL);
-
- pr_debug("%s: preallocate_dma_buffer: area=%p, addr=%p, size=%d\n",
- __func__, (void *) buf->area, (void *) buf->addr, size);
-
- if (!buf->area)
- return -ENOMEM;
-
- buf->bytes = size;
- return 0;
-}
-
-static void mx1_mx2_pcm_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_writecombine(pcm->card->dev, buf->bytes,
- buf->area, buf->addr);
- buf->area = NULL;
- }
-}
-
-static int mx1_mx2_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 = &mx1_mx2_pcm_dmamask;
- if (!card->dev->coherent_dma_mask)
- card->dev->coherent_dma_mask = 0xffffffff;
-
- if (dai->playback.channels_min) {
- ret = mx1_mx2_pcm_preallocate_dma_buffer(pcm,
- SNDRV_PCM_STREAM_PLAYBACK);
- pr_debug("%s: preallocate playback buffer\n", __func__);
- if (ret)
- goto out;
- }
-
- if (dai->capture.channels_min) {
- ret = mx1_mx2_pcm_preallocate_dma_buffer(pcm,
- SNDRV_PCM_STREAM_CAPTURE);
- pr_debug("%s: preallocate capture buffer\n", __func__);
- if (ret)
- goto out;
- }
- out:
- return ret;
-}
-
-struct snd_soc_platform mx1_mx2_soc_platform = {
- .name = "mx1_mx2-audio",
- .pcm_ops = &mx1_mx2_pcm_ops,
- .pcm_new = mx1_mx2_pcm_new,
- .pcm_free = mx1_mx2_pcm_free_dma_buffers,
-};
-EXPORT_SYMBOL_GPL(mx1_mx2_soc_platform);
-
-static int __init mx1_mx2_soc_platform_init(void)
-{
- return snd_soc_register_platform(&mx1_mx2_soc_platform);
-}
-module_init(mx1_mx2_soc_platform_init);
-
-static void __exit mx1_mx2_soc_platform_exit(void)
-{
- snd_soc_unregister_platform(&mx1_mx2_soc_platform);
-}
-module_exit(mx1_mx2_soc_platform_exit);
-
-MODULE_AUTHOR("Javier Martin, javier.martin@vista-silicon.com");
-MODULE_DESCRIPTION("Freescale i.MX2x, i.MX1x PCM DMA module");
-MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * mx1_mx2-pcm.h :- ASoC platform header for Freescale i.MX1x, i.MX2x
- *
- * 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 _MX1_MX2_PCM_H
-#define _MX1_MX2_PCM_H
-
-/* DMA information for mx1_mx2 platforms */
-struct mx1_mx2_pcm_dma_params {
- char *name; /* stream identifier */
- unsigned int transfer_type; /* READ or WRITE DMA transfer */
- dma_addr_t per_address; /* physical address of SSI fifo */
- int event_id; /* fixed DMA number for SSI fifo */
- int watermark_level; /* SSI fifo watermark level */
- int per_config; /* DMA Config flags for peripheral */
- int mem_config; /* DMA Config flags for RAM */
- };
-
-/* platform data */
-extern struct snd_soc_platform mx1_mx2_soc_platform;
-
-#endif
+++ /dev/null
-/*
- * mx27vis_wm8974.c -- SoC audio for mx27vis
- *
- * Copyright 2009 Vista Silicon S.L.
- * Author: Javier Martin
- * javier.martin@vista-silicon.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/module.h>
-#include <linux/moduleparam.h>
-#include <linux/device.h>
-#include <linux/i2c.h>
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/soc.h>
-#include <sound/soc-dapm.h>
-
-
-#include "../codecs/wm8974.h"
-#include "mx1_mx2-pcm.h"
-#include "mxc-ssi.h"
-#include <mach/gpio.h>
-#include <mach/iomux.h>
-
-#define IGNORED_ARG 0
-
-
-static struct snd_soc_card mx27vis;
-
-/**
- * This function connects SSI1 (HPCR1) as slave to
- * SSI1 external signals (PPCR1)
- * As slave, HPCR1 must set TFSDIR and TCLKDIR as inputs from
- * port 4
- */
-void audmux_connect_1_4(void)
-{
- pr_debug("AUDMUX: normal operation mode\n");
- /* Reset HPCR1 and PPCR1 */
-
- DAM_HPCR1 = 0x00000000;
- DAM_PPCR1 = 0x00000000;
-
- /* set to synchronous */
- DAM_HPCR1 |= AUDMUX_HPCR_SYN;
- DAM_PPCR1 |= AUDMUX_PPCR_SYN;
-
-
- /* set Rx sources 1 <--> 4 */
- DAM_HPCR1 |= AUDMUX_HPCR_RXDSEL(3); /* port 4 */
- DAM_PPCR1 |= AUDMUX_PPCR_RXDSEL(0); /* port 1 */
-
- /* set Tx frame and Clock direction and source 4 --> 1 output */
- DAM_HPCR1 |= AUDMUX_HPCR_TFSDIR | AUDMUX_HPCR_TCLKDIR;
- DAM_HPCR1 |= AUDMUX_HPCR_TFCSEL(3); /* TxDS and TxCclk from port 4 */
-
- return;
-}
-
-static int mx27vis_hifi_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
- struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
- unsigned int pll_out = 0, bclk = 0, fmt = 0, mclk = 0;
- int ret = 0;
-
- /*
- * The WM8974 is better at generating accurate audio clocks than the
- * MX27 SSI controller, so we will use it as master when we can.
- */
- switch (params_rate(params)) {
- case 8000:
- fmt = SND_SOC_DAIFMT_CBM_CFM;
- mclk = WM8974_MCLKDIV_12;
- pll_out = 24576000;
- break;
- case 16000:
- fmt = SND_SOC_DAIFMT_CBM_CFM;
- pll_out = 12288000;
- break;
- case 48000:
- fmt = SND_SOC_DAIFMT_CBM_CFM;
- bclk = WM8974_BCLKDIV_4;
- pll_out = 12288000;
- break;
- case 96000:
- fmt = SND_SOC_DAIFMT_CBM_CFM;
- bclk = WM8974_BCLKDIV_2;
- pll_out = 12288000;
- break;
- case 11025:
- fmt = SND_SOC_DAIFMT_CBM_CFM;
- bclk = WM8974_BCLKDIV_16;
- pll_out = 11289600;
- break;
- case 22050:
- fmt = SND_SOC_DAIFMT_CBM_CFM;
- bclk = WM8974_BCLKDIV_8;
- pll_out = 11289600;
- break;
- case 44100:
- fmt = SND_SOC_DAIFMT_CBM_CFM;
- bclk = WM8974_BCLKDIV_4;
- mclk = WM8974_MCLKDIV_2;
- pll_out = 11289600;
- break;
- case 88200:
- fmt = SND_SOC_DAIFMT_CBM_CFM;
- bclk = WM8974_BCLKDIV_2;
- pll_out = 11289600;
- break;
- }
-
- /* set codec DAI configuration */
- ret = codec_dai->ops->set_fmt(codec_dai,
- SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_IF |
- SND_SOC_DAIFMT_SYNC | fmt);
- if (ret < 0) {
- printk(KERN_ERR "Error from codec DAI configuration\n");
- return ret;
- }
-
- /* set cpu DAI configuration */
- ret = cpu_dai->ops->set_fmt(cpu_dai,
- SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
- SND_SOC_DAIFMT_SYNC | fmt);
- if (ret < 0) {
- printk(KERN_ERR "Error from cpu DAI configuration\n");
- return ret;
- }
-
- /* Put DC field of STCCR to 1 (not zero) */
- ret = cpu_dai->ops->set_tdm_slot(cpu_dai, 0, 2);
-
- /* set the SSI system clock as input */
- ret = cpu_dai->ops->set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
- SND_SOC_CLOCK_IN);
- if (ret < 0) {
- printk(KERN_ERR "Error when setting system SSI clk\n");
- return ret;
- }
-
- /* set codec BCLK division for sample rate */
- ret = codec_dai->ops->set_clkdiv(codec_dai, WM8974_BCLKDIV, bclk);
- if (ret < 0) {
- printk(KERN_ERR "Error when setting BCLK division\n");
- return ret;
- }
-
-
- /* codec PLL input is 25 MHz */
- ret = codec_dai->ops->set_pll(codec_dai, IGNORED_ARG, IGNORED_ARG,
- 25000000, pll_out);
- if (ret < 0) {
- printk(KERN_ERR "Error when setting PLL input\n");
- return ret;
- }
-
- /*set codec MCLK division for sample rate */
- ret = codec_dai->ops->set_clkdiv(codec_dai, WM8974_MCLKDIV, mclk);
- if (ret < 0) {
- printk(KERN_ERR "Error when setting MCLK division\n");
- return ret;
- }
-
- return 0;
-}
-
-static int mx27vis_hifi_hw_free(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
-
- /* disable the PLL */
- return codec_dai->ops->set_pll(codec_dai, IGNORED_ARG, 0, 0);
-}
-
-/*
- * mx27vis WM8974 HiFi DAI opserations.
- */
-static struct snd_soc_ops mx27vis_hifi_ops = {
- .hw_params = mx27vis_hifi_hw_params,
- .hw_free = mx27vis_hifi_hw_free,
-};
-
-
-static int mx27vis_suspend(struct platform_device *pdev, pm_message_t state)
-{
- return 0;
-}
-
-static int mx27vis_resume(struct platform_device *pdev)
-{
- return 0;
-}
-
-static int mx27vis_probe(struct platform_device *pdev)
-{
- int ret = 0;
-
- ret = get_ssi_clk(0, &pdev->dev);
-
- if (ret < 0) {
- printk(KERN_ERR "%s: cant get ssi clock\n", __func__);
- return ret;
- }
-
-
- return 0;
-}
-
-static int mx27vis_remove(struct platform_device *pdev)
-{
- put_ssi_clk(0);
- return 0;
-}
-
-static struct snd_soc_dai_link mx27vis_dai[] = {
-{ /* Hifi Playback*/
- .name = "WM8974",
- .stream_name = "WM8974 HiFi",
- .cpu_dai = &imx_ssi_pcm_dai[0],
- .codec_dai = &wm8974_dai,
- .ops = &mx27vis_hifi_ops,
-},
-};
-
-static struct snd_soc_card mx27vis = {
- .name = "mx27vis",
- .platform = &mx1_mx2_soc_platform,
- .probe = mx27vis_probe,
- .remove = mx27vis_remove,
- .suspend_pre = mx27vis_suspend,
- .resume_post = mx27vis_resume,
- .dai_link = mx27vis_dai,
- .num_links = ARRAY_SIZE(mx27vis_dai),
-};
-
-static struct snd_soc_device mx27vis_snd_devdata = {
- .card = &mx27vis,
- .codec_dev = &soc_codec_dev_wm8974,
-};
-
-static struct platform_device *mx27vis_snd_device;
-
-/* Temporal definition of board specific behaviour */
-void gpio_ssi_active(int ssi_num)
-{
- int ret = 0;
-
- unsigned int ssi1_pins[] = {
- PC20_PF_SSI1_FS,
- PC21_PF_SSI1_RXD,
- PC22_PF_SSI1_TXD,
- PC23_PF_SSI1_CLK,
- };
- unsigned int ssi2_pins[] = {
- PC24_PF_SSI2_FS,
- PC25_PF_SSI2_RXD,
- PC26_PF_SSI2_TXD,
- PC27_PF_SSI2_CLK,
- };
- if (ssi_num == 0)
- ret = mxc_gpio_setup_multiple_pins(ssi1_pins,
- ARRAY_SIZE(ssi1_pins), "USB OTG");
- else
- ret = mxc_gpio_setup_multiple_pins(ssi2_pins,
- ARRAY_SIZE(ssi2_pins), "USB OTG");
- if (ret)
- printk(KERN_ERR "Error requesting ssi %x pins\n", ssi_num);
-}
-
-
-static int __init mx27vis_init(void)
-{
- int ret;
-
- mx27vis_snd_device = platform_device_alloc("soc-audio", -1);
- if (!mx27vis_snd_device)
- return -ENOMEM;
-
- platform_set_drvdata(mx27vis_snd_device, &mx27vis_snd_devdata);
- mx27vis_snd_devdata.dev = &mx27vis_snd_device->dev;
- ret = platform_device_add(mx27vis_snd_device);
-
- if (ret) {
- printk(KERN_ERR "ASoC: Platform device allocation failed\n");
- platform_device_put(mx27vis_snd_device);
- }
-
- /* WM8974 uses SSI1 (HPCR1) via AUDMUX port 4 for audio (PPCR1) */
- gpio_ssi_active(0);
- audmux_connect_1_4();
-
- return ret;
-}
-
-static void __exit mx27vis_exit(void)
-{
- /* We should call some "ssi_gpio_inactive()" properly */
-}
-
-module_init(mx27vis_init);
-module_exit(mx27vis_exit);
-
-
-MODULE_AUTHOR("Javier Martin, javier.martin@vista-silicon.com");
-MODULE_DESCRIPTION("ALSA SoC WM8974 mx27vis");
-MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * mxc-ssi.c -- SSI driver for Freescale IMX
- *
- * Copyright 2006 Wolfson Microelectronics PLC.
- * Author: Liam Girdwood
- * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com
- *
- * Based on mxc-alsa-mc13783 (C) 2006 Freescale.
- *
- * 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.
- *
- * TODO:
- * Need to rework SSI register defs when new defs go into mainline.
- * Add support for TDM and FIFO 1.
- * Add support for i.mx3x DMA interface.
- *
- */
-
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/dma-mapping.h>
-#include <linux/clk.h>
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/soc.h>
-#include <mach/dma-mx1-mx2.h>
-#include <asm/mach-types.h>
-
-#include "mxc-ssi.h"
-#include "mx1_mx2-pcm.h"
-
-#define SSI1_PORT 0
-#define SSI2_PORT 1
-
-static int ssi_active[2] = {0, 0};
-
-/* DMA information for mx1_mx2 platforms */
-static struct mx1_mx2_pcm_dma_params imx_ssi1_pcm_stereo_out0 = {
- .name = "SSI1 PCM Stereo out 0",
- .transfer_type = DMA_MODE_WRITE,
- .per_address = SSI1_BASE_ADDR + STX0,
- .event_id = DMA_REQ_SSI1_TX0,
- .watermark_level = TXFIFO_WATERMARK,
- .per_config = IMX_DMA_MEMSIZE_16 | IMX_DMA_TYPE_FIFO,
- .mem_config = IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_LINEAR,
-};
-
-static struct mx1_mx2_pcm_dma_params imx_ssi1_pcm_stereo_out1 = {
- .name = "SSI1 PCM Stereo out 1",
- .transfer_type = DMA_MODE_WRITE,
- .per_address = SSI1_BASE_ADDR + STX1,
- .event_id = DMA_REQ_SSI1_TX1,
- .watermark_level = TXFIFO_WATERMARK,
- .per_config = IMX_DMA_MEMSIZE_16 | IMX_DMA_TYPE_FIFO,
- .mem_config = IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_LINEAR,
-};
-
-static struct mx1_mx2_pcm_dma_params imx_ssi1_pcm_stereo_in0 = {
- .name = "SSI1 PCM Stereo in 0",
- .transfer_type = DMA_MODE_READ,
- .per_address = SSI1_BASE_ADDR + SRX0,
- .event_id = DMA_REQ_SSI1_RX0,
- .watermark_level = RXFIFO_WATERMARK,
- .per_config = IMX_DMA_MEMSIZE_16 | IMX_DMA_TYPE_FIFO,
- .mem_config = IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_LINEAR,
-};
-
-static struct mx1_mx2_pcm_dma_params imx_ssi1_pcm_stereo_in1 = {
- .name = "SSI1 PCM Stereo in 1",
- .transfer_type = DMA_MODE_READ,
- .per_address = SSI1_BASE_ADDR + SRX1,
- .event_id = DMA_REQ_SSI1_RX1,
- .watermark_level = RXFIFO_WATERMARK,
- .per_config = IMX_DMA_MEMSIZE_16 | IMX_DMA_TYPE_FIFO,
- .mem_config = IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_LINEAR,
-};
-
-static struct mx1_mx2_pcm_dma_params imx_ssi2_pcm_stereo_out0 = {
- .name = "SSI2 PCM Stereo out 0",
- .transfer_type = DMA_MODE_WRITE,
- .per_address = SSI2_BASE_ADDR + STX0,
- .event_id = DMA_REQ_SSI2_TX0,
- .watermark_level = TXFIFO_WATERMARK,
- .per_config = IMX_DMA_MEMSIZE_16 | IMX_DMA_TYPE_FIFO,
- .mem_config = IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_LINEAR,
-};
-
-static struct mx1_mx2_pcm_dma_params imx_ssi2_pcm_stereo_out1 = {
- .name = "SSI2 PCM Stereo out 1",
- .transfer_type = DMA_MODE_WRITE,
- .per_address = SSI2_BASE_ADDR + STX1,
- .event_id = DMA_REQ_SSI2_TX1,
- .watermark_level = TXFIFO_WATERMARK,
- .per_config = IMX_DMA_MEMSIZE_16 | IMX_DMA_TYPE_FIFO,
- .mem_config = IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_LINEAR,
-};
-
-static struct mx1_mx2_pcm_dma_params imx_ssi2_pcm_stereo_in0 = {
- .name = "SSI2 PCM Stereo in 0",
- .transfer_type = DMA_MODE_READ,
- .per_address = SSI2_BASE_ADDR + SRX0,
- .event_id = DMA_REQ_SSI2_RX0,
- .watermark_level = RXFIFO_WATERMARK,
- .per_config = IMX_DMA_MEMSIZE_16 | IMX_DMA_TYPE_FIFO,
- .mem_config = IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_LINEAR,
-};
-
-static struct mx1_mx2_pcm_dma_params imx_ssi2_pcm_stereo_in1 = {
- .name = "SSI2 PCM Stereo in 1",
- .transfer_type = DMA_MODE_READ,
- .per_address = SSI2_BASE_ADDR + SRX1,
- .event_id = DMA_REQ_SSI2_RX1,
- .watermark_level = RXFIFO_WATERMARK,
- .per_config = IMX_DMA_MEMSIZE_16 | IMX_DMA_TYPE_FIFO,
- .mem_config = IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_LINEAR,
-};
-
-static struct clk *ssi_clk0, *ssi_clk1;
-
-int get_ssi_clk(int ssi, struct device *dev)
-{
- switch (ssi) {
- case 0:
- ssi_clk0 = clk_get(dev, "ssi1");
- if (IS_ERR(ssi_clk0))
- return PTR_ERR(ssi_clk0);
- return 0;
- case 1:
- ssi_clk1 = clk_get(dev, "ssi2");
- if (IS_ERR(ssi_clk1))
- return PTR_ERR(ssi_clk1);
- return 0;
- default:
- return -EINVAL;
- }
-}
-EXPORT_SYMBOL(get_ssi_clk);
-
-void put_ssi_clk(int ssi)
-{
- switch (ssi) {
- case 0:
- clk_put(ssi_clk0);
- ssi_clk0 = NULL;
- break;
- case 1:
- clk_put(ssi_clk1);
- ssi_clk1 = NULL;
- break;
- }
-}
-EXPORT_SYMBOL(put_ssi_clk);
-
-/*
- * SSI system clock configuration.
- * Should only be called when port is inactive (i.e. SSIEN = 0).
- */
-static int imx_ssi_set_dai_sysclk(struct snd_soc_dai *cpu_dai,
- int clk_id, unsigned int freq, int dir)
-{
- u32 scr;
-
- if (cpu_dai->id == IMX_DAI_SSI0 || cpu_dai->id == IMX_DAI_SSI2) {
- scr = SSI1_SCR;
- pr_debug("%s: SCR for SSI1 is %x\n", __func__, scr);
- } else {
- scr = SSI2_SCR;
- pr_debug("%s: SCR for SSI2 is %x\n", __func__, scr);
- }
-
- if (scr & SSI_SCR_SSIEN) {
- printk(KERN_WARNING "Warning ssi already enabled\n");
- return 0;
- }
-
- switch (clk_id) {
- case IMX_SSP_SYS_CLK:
- if (dir == SND_SOC_CLOCK_OUT) {
- scr |= SSI_SCR_SYS_CLK_EN;
- pr_debug("%s: clk of is output\n", __func__);
- } else {
- scr &= ~SSI_SCR_SYS_CLK_EN;
- pr_debug("%s: clk of is input\n", __func__);
- }
- break;
- default:
- return -EINVAL;
- }
-
- if (cpu_dai->id == IMX_DAI_SSI0 || cpu_dai->id == IMX_DAI_SSI2) {
- pr_debug("%s: writeback of SSI1_SCR\n", __func__);
- SSI1_SCR = scr;
- } else {
- pr_debug("%s: writeback of SSI2_SCR\n", __func__);
- SSI2_SCR = scr;
- }
-
- return 0;
-}
-
-/*
- * SSI Clock dividers
- * Should only be called when port is inactive (i.e. SSIEN = 0).
- */
-static int imx_ssi_set_dai_clkdiv(struct snd_soc_dai *cpu_dai,
- int div_id, int div)
-{
- u32 stccr, srccr;
-
- pr_debug("%s\n", __func__);
- if (cpu_dai->id == IMX_DAI_SSI0 || cpu_dai->id == IMX_DAI_SSI2) {
- if (SSI1_SCR & SSI_SCR_SSIEN)
- return 0;
- srccr = SSI1_STCCR;
- stccr = SSI1_STCCR;
- } else {
- if (SSI2_SCR & SSI_SCR_SSIEN)
- return 0;
- srccr = SSI2_STCCR;
- stccr = SSI2_STCCR;
- }
-
- switch (div_id) {
- case IMX_SSI_TX_DIV_2:
- stccr &= ~SSI_STCCR_DIV2;
- stccr |= div;
- break;
- case IMX_SSI_TX_DIV_PSR:
- stccr &= ~SSI_STCCR_PSR;
- stccr |= div;
- break;
- case IMX_SSI_TX_DIV_PM:
- stccr &= ~0xff;
- stccr |= SSI_STCCR_PM(div);
- break;
- case IMX_SSI_RX_DIV_2:
- stccr &= ~SSI_STCCR_DIV2;
- stccr |= div;
- break;
- case IMX_SSI_RX_DIV_PSR:
- stccr &= ~SSI_STCCR_PSR;
- stccr |= div;
- break;
- case IMX_SSI_RX_DIV_PM:
- stccr &= ~0xff;
- stccr |= SSI_STCCR_PM(div);
- break;
- default:
- return -EINVAL;
- }
-
- if (cpu_dai->id == IMX_DAI_SSI0 || cpu_dai->id == IMX_DAI_SSI2) {
- SSI1_STCCR = stccr;
- SSI1_SRCCR = srccr;
- } else {
- SSI2_STCCR = stccr;
- SSI2_SRCCR = srccr;
- }
- return 0;
-}
-
-/*
- * SSI Network Mode or TDM slots configuration.
- * Should only be called when port is inactive (i.e. SSIEN = 0).
- */
-static int imx_ssi_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai,
- unsigned int mask, int slots)
-{
- u32 stmsk, srmsk, stccr;
-
- if (cpu_dai->id == IMX_DAI_SSI0 || cpu_dai->id == IMX_DAI_SSI2) {
- if (SSI1_SCR & SSI_SCR_SSIEN) {
- printk(KERN_WARNING "Warning ssi already enabled\n");
- return 0;
- }
- stccr = SSI1_STCCR;
- } else {
- if (SSI2_SCR & SSI_SCR_SSIEN) {
- printk(KERN_WARNING "Warning ssi already enabled\n");
- return 0;
- }
- stccr = SSI2_STCCR;
- }
-
- stmsk = srmsk = mask;
- stccr &= ~SSI_STCCR_DC_MASK;
- stccr |= SSI_STCCR_DC(slots - 1);
-
- if (cpu_dai->id == IMX_DAI_SSI0 || cpu_dai->id == IMX_DAI_SSI2) {
- SSI1_STMSK = stmsk;
- SSI1_SRMSK = srmsk;
- SSI1_SRCCR = SSI1_STCCR = stccr;
- } else {
- SSI2_STMSK = stmsk;
- SSI2_SRMSK = srmsk;
- SSI2_SRCCR = SSI2_STCCR = stccr;
- }
-
- return 0;
-}
-
-/*
- * SSI DAI format configuration.
- * Should only be called when port is inactive (i.e. SSIEN = 0).
- * Note: We don't use the I2S modes but instead manually configure the
- * SSI for I2S.
- */
-static int imx_ssi_set_dai_fmt(struct snd_soc_dai *cpu_dai,
- unsigned int fmt)
-{
- u32 stcr = 0, srcr = 0, scr;
-
- /*
- * This is done to avoid this function to modify
- * previous set values in stcr
- */
- stcr = SSI1_STCR;
-
- if (cpu_dai->id == IMX_DAI_SSI0 || cpu_dai->id == IMX_DAI_SSI2)
- scr = SSI1_SCR & ~(SSI_SCR_SYN | SSI_SCR_NET);
- else
- scr = SSI2_SCR & ~(SSI_SCR_SYN | SSI_SCR_NET);
-
- if (scr & SSI_SCR_SSIEN) {
- printk(KERN_WARNING "Warning ssi already enabled\n");
- return 0;
- }
-
- /* DAI mode */
- switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
- case SND_SOC_DAIFMT_I2S:
- /* data on rising edge of bclk, frame low 1clk before data */
- stcr |= SSI_STCR_TFSI | SSI_STCR_TEFS | SSI_STCR_TXBIT0;
- srcr |= SSI_SRCR_RFSI | SSI_SRCR_REFS | SSI_SRCR_RXBIT0;
- break;
- case SND_SOC_DAIFMT_LEFT_J:
- /* data on rising edge of bclk, frame high with data */
- stcr |= SSI_STCR_TXBIT0;
- srcr |= SSI_SRCR_RXBIT0;
- break;
- case SND_SOC_DAIFMT_DSP_B:
- /* data on rising edge of bclk, frame high with data */
- stcr |= SSI_STCR_TFSL;
- srcr |= SSI_SRCR_RFSL;
- break;
- case SND_SOC_DAIFMT_DSP_A:
- /* data on rising edge of bclk, frame high 1clk before data */
- stcr |= SSI_STCR_TFSL | SSI_STCR_TEFS;
- srcr |= SSI_SRCR_RFSL | SSI_SRCR_REFS;
- break;
- }
-
- /* DAI clock inversion */
- switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
- case SND_SOC_DAIFMT_IB_IF:
- stcr |= SSI_STCR_TFSI;
- stcr &= ~SSI_STCR_TSCKP;
- srcr |= SSI_SRCR_RFSI;
- srcr &= ~SSI_SRCR_RSCKP;
- break;
- case SND_SOC_DAIFMT_IB_NF:
- stcr &= ~(SSI_STCR_TSCKP | SSI_STCR_TFSI);
- srcr &= ~(SSI_SRCR_RSCKP | SSI_SRCR_RFSI);
- break;
- case SND_SOC_DAIFMT_NB_IF:
- stcr |= SSI_STCR_TFSI | SSI_STCR_TSCKP;
- srcr |= SSI_SRCR_RFSI | SSI_SRCR_RSCKP;
- break;
- case SND_SOC_DAIFMT_NB_NF:
- stcr &= ~SSI_STCR_TFSI;
- stcr |= SSI_STCR_TSCKP;
- srcr &= ~SSI_SRCR_RFSI;
- srcr |= SSI_SRCR_RSCKP;
- break;
- }
-
- /* DAI clock master masks */
- switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
- case SND_SOC_DAIFMT_CBS_CFS:
- stcr |= SSI_STCR_TFDIR | SSI_STCR_TXDIR;
- srcr |= SSI_SRCR_RFDIR | SSI_SRCR_RXDIR;
- break;
- case SND_SOC_DAIFMT_CBM_CFS:
- stcr |= SSI_STCR_TFDIR;
- srcr |= SSI_SRCR_RFDIR;
- break;
- case SND_SOC_DAIFMT_CBS_CFM:
- stcr |= SSI_STCR_TXDIR;
- srcr |= SSI_SRCR_RXDIR;
- break;
- }
-
- if (cpu_dai->id == IMX_DAI_SSI0 || cpu_dai->id == IMX_DAI_SSI2) {
- SSI1_STCR = stcr;
- SSI1_SRCR = srcr;
- SSI1_SCR = scr;
- } else {
- SSI2_STCR = stcr;
- SSI2_SRCR = srcr;
- SSI2_SCR = scr;
- }
-
- return 0;
-}
-
-static int imx_ssi_startup(struct snd_pcm_substream *substream,
- struct snd_soc_dai *dai)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
-
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- /* set up TX DMA params */
- switch (cpu_dai->id) {
- case IMX_DAI_SSI0:
- cpu_dai->dma_data = &imx_ssi1_pcm_stereo_out0;
- break;
- case IMX_DAI_SSI1:
- cpu_dai->dma_data = &imx_ssi1_pcm_stereo_out1;
- break;
- case IMX_DAI_SSI2:
- cpu_dai->dma_data = &imx_ssi2_pcm_stereo_out0;
- break;
- case IMX_DAI_SSI3:
- cpu_dai->dma_data = &imx_ssi2_pcm_stereo_out1;
- }
- pr_debug("%s: (playback)\n", __func__);
- } else {
- /* set up RX DMA params */
- switch (cpu_dai->id) {
- case IMX_DAI_SSI0:
- cpu_dai->dma_data = &imx_ssi1_pcm_stereo_in0;
- break;
- case IMX_DAI_SSI1:
- cpu_dai->dma_data = &imx_ssi1_pcm_stereo_in1;
- break;
- case IMX_DAI_SSI2:
- cpu_dai->dma_data = &imx_ssi2_pcm_stereo_in0;
- break;
- case IMX_DAI_SSI3:
- cpu_dai->dma_data = &imx_ssi2_pcm_stereo_in1;
- }
- pr_debug("%s: (capture)\n", __func__);
- }
-
- /*
- * we cant really change any SSI values after SSI is enabled
- * need to fix in software for max flexibility - lrg
- */
- if (cpu_dai->active) {
- printk(KERN_WARNING "Warning ssi already enabled\n");
- return 0;
- }
-
- /* reset the SSI port - Sect 45.4.4 */
- if (cpu_dai->id == IMX_DAI_SSI0 || cpu_dai->id == IMX_DAI_SSI2) {
-
- if (!ssi_clk0)
- return -EINVAL;
-
- if (ssi_active[SSI1_PORT]++) {
- pr_debug("%s: exit before reset\n", __func__);
- return 0;
- }
-
- /* SSI1 Reset */
- SSI1_SCR = 0;
-
- SSI1_SFCSR = SSI_SFCSR_RFWM1(RXFIFO_WATERMARK) |
- SSI_SFCSR_RFWM0(RXFIFO_WATERMARK) |
- SSI_SFCSR_TFWM1(TXFIFO_WATERMARK) |
- SSI_SFCSR_TFWM0(TXFIFO_WATERMARK);
- } else {
-
- if (!ssi_clk1)
- return -EINVAL;
-
- if (ssi_active[SSI2_PORT]++) {
- pr_debug("%s: exit before reset\n", __func__);
- return 0;
- }
-
- /* SSI2 Reset */
- SSI2_SCR = 0;
-
- SSI2_SFCSR = SSI_SFCSR_RFWM1(RXFIFO_WATERMARK) |
- SSI_SFCSR_RFWM0(RXFIFO_WATERMARK) |
- SSI_SFCSR_TFWM1(TXFIFO_WATERMARK) |
- SSI_SFCSR_TFWM0(TXFIFO_WATERMARK);
- }
-
- return 0;
-}
-
-int imx_ssi_hw_tx_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
- u32 stccr, stcr, sier;
-
- pr_debug("%s\n", __func__);
-
- if (cpu_dai->id == IMX_DAI_SSI0 || cpu_dai->id == IMX_DAI_SSI2) {
- stccr = SSI1_STCCR & ~SSI_STCCR_WL_MASK;
- stcr = SSI1_STCR;
- sier = SSI1_SIER;
- } else {
- stccr = SSI2_STCCR & ~SSI_STCCR_WL_MASK;
- stcr = SSI2_STCR;
- sier = SSI2_SIER;
- }
-
- /* DAI data (word) size */
- switch (params_format(params)) {
- case SNDRV_PCM_FORMAT_S16_LE:
- stccr |= SSI_STCCR_WL(16);
- break;
- case SNDRV_PCM_FORMAT_S20_3LE:
- stccr |= SSI_STCCR_WL(20);
- break;
- case SNDRV_PCM_FORMAT_S24_LE:
- stccr |= SSI_STCCR_WL(24);
- break;
- }
-
- /* enable interrupts */
- if (cpu_dai->id == IMX_DAI_SSI0 || cpu_dai->id == IMX_DAI_SSI2)
- stcr |= SSI_STCR_TFEN0;
- else
- stcr |= SSI_STCR_TFEN1;
- sier |= SSI_SIER_TDMAE;
-
- if (cpu_dai->id == IMX_DAI_SSI0 || cpu_dai->id == IMX_DAI_SSI2) {
- SSI1_STCR = stcr;
- SSI1_STCCR = stccr;
- SSI1_SIER = sier;
- } else {
- SSI2_STCR = stcr;
- SSI2_STCCR = stccr;
- SSI2_SIER = sier;
- }
-
- return 0;
-}
-
-int imx_ssi_hw_rx_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
- u32 srccr, srcr, sier;
-
- pr_debug("%s\n", __func__);
-
- if (cpu_dai->id == IMX_DAI_SSI0 || cpu_dai->id == IMX_DAI_SSI2) {
- srccr = SSI1_SRCCR & ~SSI_SRCCR_WL_MASK;
- srcr = SSI1_SRCR;
- sier = SSI1_SIER;
- } else {
- srccr = SSI2_SRCCR & ~SSI_SRCCR_WL_MASK;
- srcr = SSI2_SRCR;
- sier = SSI2_SIER;
- }
-
- /* DAI data (word) size */
- switch (params_format(params)) {
- case SNDRV_PCM_FORMAT_S16_LE:
- srccr |= SSI_SRCCR_WL(16);
- break;
- case SNDRV_PCM_FORMAT_S20_3LE:
- srccr |= SSI_SRCCR_WL(20);
- break;
- case SNDRV_PCM_FORMAT_S24_LE:
- srccr |= SSI_SRCCR_WL(24);
- break;
- }
-
- /* enable interrupts */
- if (cpu_dai->id == IMX_DAI_SSI0 || cpu_dai->id == IMX_DAI_SSI2)
- srcr |= SSI_SRCR_RFEN0;
- else
- srcr |= SSI_SRCR_RFEN1;
- sier |= SSI_SIER_RDMAE;
-
- if (cpu_dai->id == IMX_DAI_SSI0 || cpu_dai->id == IMX_DAI_SSI2) {
- SSI1_SRCR = srcr;
- SSI1_SRCCR = srccr;
- SSI1_SIER = sier;
- } else {
- SSI2_SRCR = srcr;
- SSI2_SRCCR = srccr;
- SSI2_SIER = sier;
- }
-
- return 0;
-}
-
-/*
- * Should only be called when port is inactive (i.e. SSIEN = 0),
- * although can be called multiple times by upper layers.
- */
-int imx_ssi_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params,
- struct snd_soc_dai *dai)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
-
- int ret;
-
- /* cant change any parameters when SSI is running */
- if (cpu_dai->id == IMX_DAI_SSI0 || cpu_dai->id == IMX_DAI_SSI2) {
- if (SSI1_SCR & SSI_SCR_SSIEN) {
- printk(KERN_WARNING "Warning ssi already enabled\n");
- return 0;
- }
- } else {
- if (SSI2_SCR & SSI_SCR_SSIEN) {
- printk(KERN_WARNING "Warning ssi already enabled\n");
- return 0;
- }
- }
-
- /*
- * Configure both tx and rx params with the same settings. This is
- * really a harware restriction because SSI must be disabled until
- * we can change those values. If there is an active audio stream in
- * one direction, enabling the other direction with different
- * settings would mean disturbing the running one.
- */
- ret = imx_ssi_hw_tx_params(substream, params);
- if (ret < 0)
- return ret;
- return imx_ssi_hw_rx_params(substream, params);
-}
-
-int imx_ssi_prepare(struct snd_pcm_substream *substream,
- struct snd_soc_dai *dai)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
- int ret;
-
- pr_debug("%s\n", __func__);
-
- /* Enable clks here to follow SSI recommended init sequence */
- if (cpu_dai->id == IMX_DAI_SSI0 || cpu_dai->id == IMX_DAI_SSI2) {
- ret = clk_enable(ssi_clk0);
- if (ret < 0)
- printk(KERN_ERR "Unable to enable ssi_clk0\n");
- } else {
- ret = clk_enable(ssi_clk1);
- if (ret < 0)
- printk(KERN_ERR "Unable to enable ssi_clk1\n");
- }
-
- return 0;
-}
-
-static int imx_ssi_trigger(struct snd_pcm_substream *substream, int cmd,
- struct snd_soc_dai *dai)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
- u32 scr;
-
- if (cpu_dai->id == IMX_DAI_SSI0 || cpu_dai->id == IMX_DAI_SSI2)
- scr = SSI1_SCR;
- else
- scr = SSI2_SCR;
-
- switch (cmd) {
- case SNDRV_PCM_TRIGGER_START:
- case SNDRV_PCM_TRIGGER_RESUME:
- case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- scr |= SSI_SCR_TE | SSI_SCR_SSIEN;
- else
- scr |= SSI_SCR_RE | SSI_SCR_SSIEN;
- break;
- case SNDRV_PCM_TRIGGER_SUSPEND:
- case SNDRV_PCM_TRIGGER_STOP:
- case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- scr &= ~SSI_SCR_TE;
- else
- scr &= ~SSI_SCR_RE;
- break;
- default:
- return -EINVAL;
- }
-
- if (cpu_dai->id == IMX_DAI_SSI0 || cpu_dai->id == IMX_DAI_SSI2)
- SSI1_SCR = scr;
- else
- SSI2_SCR = scr;
-
- return 0;
-}
-
-static void imx_ssi_shutdown(struct snd_pcm_substream *substream,
- struct snd_soc_dai *dai)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
-
- /* shutdown SSI if neither Tx or Rx is active */
- if (!cpu_dai->active) {
-
- if (cpu_dai->id == IMX_DAI_SSI0 ||
- cpu_dai->id == IMX_DAI_SSI2) {
-
- if (--ssi_active[SSI1_PORT] > 1)
- return;
-
- SSI1_SCR = 0;
- clk_disable(ssi_clk0);
- } else {
- if (--ssi_active[SSI2_PORT])
- return;
- SSI2_SCR = 0;
- clk_disable(ssi_clk1);
- }
- }
-}
-
-#ifdef CONFIG_PM
-static int imx_ssi_suspend(struct platform_device *dev,
- struct snd_soc_dai *dai)
-{
- return 0;
-}
-
-static int imx_ssi_resume(struct platform_device *pdev,
- struct snd_soc_dai *dai)
-{
- return 0;
-}
-
-#else
-#define imx_ssi_suspend NULL
-#define imx_ssi_resume NULL
-#endif
-
-#define IMX_SSI_RATES \
- (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \
- SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
- SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
- SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | \
- SNDRV_PCM_RATE_96000)
-
-#define IMX_SSI_BITS \
- (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
- SNDRV_PCM_FMTBIT_S24_LE)
-
-static struct snd_soc_dai_ops imx_ssi_pcm_dai_ops = {
- .startup = imx_ssi_startup,
- .shutdown = imx_ssi_shutdown,
- .trigger = imx_ssi_trigger,
- .prepare = imx_ssi_prepare,
- .hw_params = imx_ssi_hw_params,
- .set_sysclk = imx_ssi_set_dai_sysclk,
- .set_clkdiv = imx_ssi_set_dai_clkdiv,
- .set_fmt = imx_ssi_set_dai_fmt,
- .set_tdm_slot = imx_ssi_set_dai_tdm_slot,
-};
-
-struct snd_soc_dai imx_ssi_pcm_dai[] = {
-{
- .name = "imx-i2s-1-0",
- .id = IMX_DAI_SSI0,
- .suspend = imx_ssi_suspend,
- .resume = imx_ssi_resume,
- .playback = {
- .channels_min = 1,
- .channels_max = 2,
- .formats = IMX_SSI_BITS,
- .rates = IMX_SSI_RATES,},
- .capture = {
- .channels_min = 1,
- .channels_max = 2,
- .formats = IMX_SSI_BITS,
- .rates = IMX_SSI_RATES,},
- .ops = &imx_ssi_pcm_dai_ops,
-},
-{
- .name = "imx-i2s-2-0",
- .id = IMX_DAI_SSI1,
- .playback = {
- .channels_min = 1,
- .channels_max = 2,
- .formats = IMX_SSI_BITS,
- .rates = IMX_SSI_RATES,},
- .capture = {
- .channels_min = 1,
- .channels_max = 2,
- .formats = IMX_SSI_BITS,
- .rates = IMX_SSI_RATES,},
- .ops = &imx_ssi_pcm_dai_ops,
-},
-{
- .name = "imx-i2s-1-1",
- .id = IMX_DAI_SSI2,
- .suspend = imx_ssi_suspend,
- .resume = imx_ssi_resume,
- .playback = {
- .channels_min = 1,
- .channels_max = 2,
- .formats = IMX_SSI_BITS,
- .rates = IMX_SSI_RATES,},
- .capture = {
- .channels_min = 1,
- .channels_max = 2,
- .formats = IMX_SSI_BITS,
- .rates = IMX_SSI_RATES,},
- .ops = &imx_ssi_pcm_dai_ops,
-},
-{
- .name = "imx-i2s-2-1",
- .id = IMX_DAI_SSI3,
- .playback = {
- .channels_min = 1,
- .channels_max = 2,
- .formats = IMX_SSI_BITS,
- .rates = IMX_SSI_RATES,},
- .capture = {
- .channels_min = 1,
- .channels_max = 2,
- .formats = IMX_SSI_BITS,
- .rates = IMX_SSI_RATES,},
- .ops = &imx_ssi_pcm_dai_ops,
-},
-};
-EXPORT_SYMBOL_GPL(imx_ssi_pcm_dai);
-
-static int __init imx_ssi_init(void)
-{
- return snd_soc_register_dais(imx_ssi_pcm_dai,
- ARRAY_SIZE(imx_ssi_pcm_dai));
-}
-
-static void __exit imx_ssi_exit(void)
-{
- snd_soc_unregister_dais(imx_ssi_pcm_dai,
- ARRAY_SIZE(imx_ssi_pcm_dai));
-}
-
-module_init(imx_ssi_init);
-module_exit(imx_ssi_exit);
-MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com");
-MODULE_DESCRIPTION("i.MX ASoC I2S driver");
-MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * 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 _IMX_SSI_H
-#define _IMX_SSI_H
-
-#include <mach/hardware.h>
-
-/* SSI regs definition - MOVE to /arch/arm/plat-mxc/include/mach/ when stable */
-#define SSI1_IO_BASE_ADDR IO_ADDRESS(SSI1_BASE_ADDR)
-#define SSI2_IO_BASE_ADDR IO_ADDRESS(SSI2_BASE_ADDR)
-
-#define STX0 0x00
-#define STX1 0x04
-#define SRX0 0x08
-#define SRX1 0x0c
-#define SCR 0x10
-#define SISR 0x14
-#define SIER 0x18
-#define STCR 0x1c
-#define SRCR 0x20
-#define STCCR 0x24
-#define SRCCR 0x28
-#define SFCSR 0x2c
-#define STR 0x30
-#define SOR 0x34
-#define SACNT 0x38
-#define SACADD 0x3c
-#define SACDAT 0x40
-#define SATAG 0x44
-#define STMSK 0x48
-#define SRMSK 0x4c
-
-#define SSI1_STX0 (*((volatile u32 *)(SSI1_IO_BASE_ADDR + STX0)))
-#define SSI1_STX1 (*((volatile u32 *)(SSI1_IO_BASE_ADDR + STX1)))
-#define SSI1_SRX0 (*((volatile u32 *)(SSI1_IO_BASE_ADDR + SRX0)))
-#define SSI1_SRX1 (*((volatile u32 *)(SSI1_IO_BASE_ADDR + SRX1)))
-#define SSI1_SCR (*((volatile u32 *)(SSI1_IO_BASE_ADDR + SCR)))
-#define SSI1_SISR (*((volatile u32 *)(SSI1_IO_BASE_ADDR + SISR)))
-#define SSI1_SIER (*((volatile u32 *)(SSI1_IO_BASE_ADDR + SIER)))
-#define SSI1_STCR (*((volatile u32 *)(SSI1_IO_BASE_ADDR + STCR)))
-#define SSI1_SRCR (*((volatile u32 *)(SSI1_IO_BASE_ADDR + SRCR)))
-#define SSI1_STCCR (*((volatile u32 *)(SSI1_IO_BASE_ADDR + STCCR)))
-#define SSI1_SRCCR (*((volatile u32 *)(SSI1_IO_BASE_ADDR + SRCCR)))
-#define SSI1_SFCSR (*((volatile u32 *)(SSI1_IO_BASE_ADDR + SFCSR)))
-#define SSI1_STR (*((volatile u32 *)(SSI1_IO_BASE_ADDR + STR)))
-#define SSI1_SOR (*((volatile u32 *)(SSI1_IO_BASE_ADDR + SOR)))
-#define SSI1_SACNT (*((volatile u32 *)(SSI1_IO_BASE_ADDR + SACNT)))
-#define SSI1_SACADD (*((volatile u32 *)(SSI1_IO_BASE_ADDR + SACADD)))
-#define SSI1_SACDAT (*((volatile u32 *)(SSI1_IO_BASE_ADDR + SACDAT)))
-#define SSI1_SATAG (*((volatile u32 *)(SSI1_IO_BASE_ADDR + SATAG)))
-#define SSI1_STMSK (*((volatile u32 *)(SSI1_IO_BASE_ADDR + STMSK)))
-#define SSI1_SRMSK (*((volatile u32 *)(SSI1_IO_BASE_ADDR + SRMSK)))
-
-
-#define SSI2_STX0 (*((volatile u32 *)(SSI2_IO_BASE_ADDR + STX0)))
-#define SSI2_STX1 (*((volatile u32 *)(SSI2_IO_BASE_ADDR + STX1)))
-#define SSI2_SRX0 (*((volatile u32 *)(SSI2_IO_BASE_ADDR + SRX0)))
-#define SSI2_SRX1 (*((volatile u32 *)(SSI2_IO_BASE_ADDR + SRX1)))
-#define SSI2_SCR (*((volatile u32 *)(SSI2_IO_BASE_ADDR + SCR)))
-#define SSI2_SISR (*((volatile u32 *)(SSI2_IO_BASE_ADDR + SISR)))
-#define SSI2_SIER (*((volatile u32 *)(SSI2_IO_BASE_ADDR + SIER)))
-#define SSI2_STCR (*((volatile u32 *)(SSI2_IO_BASE_ADDR + STCR)))
-#define SSI2_SRCR (*((volatile u32 *)(SSI2_IO_BASE_ADDR + SRCR)))
-#define SSI2_STCCR (*((volatile u32 *)(SSI2_IO_BASE_ADDR + STCCR)))
-#define SSI2_SRCCR (*((volatile u32 *)(SSI2_IO_BASE_ADDR + SRCCR)))
-#define SSI2_SFCSR (*((volatile u32 *)(SSI2_IO_BASE_ADDR + SFCSR)))
-#define SSI2_STR (*((volatile u32 *)(SSI2_IO_BASE_ADDR + STR)))
-#define SSI2_SOR (*((volatile u32 *)(SSI2_IO_BASE_ADDR + SOR)))
-#define SSI2_SACNT (*((volatile u32 *)(SSI2_IO_BASE_ADDR + SACNT)))
-#define SSI2_SACADD (*((volatile u32 *)(SSI2_IO_BASE_ADDR + SACADD)))
-#define SSI2_SACDAT (*((volatile u32 *)(SSI2_IO_BASE_ADDR + SACDAT)))
-#define SSI2_SATAG (*((volatile u32 *)(SSI2_IO_BASE_ADDR + SATAG)))
-#define SSI2_STMSK (*((volatile u32 *)(SSI2_IO_BASE_ADDR + STMSK)))
-#define SSI2_SRMSK (*((volatile u32 *)(SSI2_IO_BASE_ADDR + SRMSK)))
-
-#define SSI_SCR_CLK_IST (1 << 9)
-#define SSI_SCR_TCH_EN (1 << 8)
-#define SSI_SCR_SYS_CLK_EN (1 << 7)
-#define SSI_SCR_I2S_MODE_NORM (0 << 5)
-#define SSI_SCR_I2S_MODE_MSTR (1 << 5)
-#define SSI_SCR_I2S_MODE_SLAVE (2 << 5)
-#define SSI_SCR_SYN (1 << 4)
-#define SSI_SCR_NET (1 << 3)
-#define SSI_SCR_RE (1 << 2)
-#define SSI_SCR_TE (1 << 1)
-#define SSI_SCR_SSIEN (1 << 0)
-
-#define SSI_SISR_CMDAU (1 << 18)
-#define SSI_SISR_CMDDU (1 << 17)
-#define SSI_SISR_RXT (1 << 16)
-#define SSI_SISR_RDR1 (1 << 15)
-#define SSI_SISR_RDR0 (1 << 14)
-#define SSI_SISR_TDE1 (1 << 13)
-#define SSI_SISR_TDE0 (1 << 12)
-#define SSI_SISR_ROE1 (1 << 11)
-#define SSI_SISR_ROE0 (1 << 10)
-#define SSI_SISR_TUE1 (1 << 9)
-#define SSI_SISR_TUE0 (1 << 8)
-#define SSI_SISR_TFS (1 << 7)
-#define SSI_SISR_RFS (1 << 6)
-#define SSI_SISR_TLS (1 << 5)
-#define SSI_SISR_RLS (1 << 4)
-#define SSI_SISR_RFF1 (1 << 3)
-#define SSI_SISR_RFF0 (1 << 2)
-#define SSI_SISR_TFE1 (1 << 1)
-#define SSI_SISR_TFE0 (1 << 0)
-
-#define SSI_SIER_RDMAE (1 << 22)
-#define SSI_SIER_RIE (1 << 21)
-#define SSI_SIER_TDMAE (1 << 20)
-#define SSI_SIER_TIE (1 << 19)
-#define SSI_SIER_CMDAU_EN (1 << 18)
-#define SSI_SIER_CMDDU_EN (1 << 17)
-#define SSI_SIER_RXT_EN (1 << 16)
-#define SSI_SIER_RDR1_EN (1 << 15)
-#define SSI_SIER_RDR0_EN (1 << 14)
-#define SSI_SIER_TDE1_EN (1 << 13)
-#define SSI_SIER_TDE0_EN (1 << 12)
-#define SSI_SIER_ROE1_EN (1 << 11)
-#define SSI_SIER_ROE0_EN (1 << 10)
-#define SSI_SIER_TUE1_EN (1 << 9)
-#define SSI_SIER_TUE0_EN (1 << 8)
-#define SSI_SIER_TFS_EN (1 << 7)
-#define SSI_SIER_RFS_EN (1 << 6)
-#define SSI_SIER_TLS_EN (1 << 5)
-#define SSI_SIER_RLS_EN (1 << 4)
-#define SSI_SIER_RFF1_EN (1 << 3)
-#define SSI_SIER_RFF0_EN (1 << 2)
-#define SSI_SIER_TFE1_EN (1 << 1)
-#define SSI_SIER_TFE0_EN (1 << 0)
-
-#define SSI_STCR_TXBIT0 (1 << 9)
-#define SSI_STCR_TFEN1 (1 << 8)
-#define SSI_STCR_TFEN0 (1 << 7)
-#define SSI_STCR_TFDIR (1 << 6)
-#define SSI_STCR_TXDIR (1 << 5)
-#define SSI_STCR_TSHFD (1 << 4)
-#define SSI_STCR_TSCKP (1 << 3)
-#define SSI_STCR_TFSI (1 << 2)
-#define SSI_STCR_TFSL (1 << 1)
-#define SSI_STCR_TEFS (1 << 0)
-
-#define SSI_SRCR_RXBIT0 (1 << 9)
-#define SSI_SRCR_RFEN1 (1 << 8)
-#define SSI_SRCR_RFEN0 (1 << 7)
-#define SSI_SRCR_RFDIR (1 << 6)
-#define SSI_SRCR_RXDIR (1 << 5)
-#define SSI_SRCR_RSHFD (1 << 4)
-#define SSI_SRCR_RSCKP (1 << 3)
-#define SSI_SRCR_RFSI (1 << 2)
-#define SSI_SRCR_RFSL (1 << 1)
-#define SSI_SRCR_REFS (1 << 0)
-
-#define SSI_STCCR_DIV2 (1 << 18)
-#define SSI_STCCR_PSR (1 << 15)
-#define SSI_STCCR_WL(x) ((((x) - 2) >> 1) << 13)
-#define SSI_STCCR_DC(x) (((x) & 0x1f) << 8)
-#define SSI_STCCR_PM(x) (((x) & 0xff) << 0)
-#define SSI_STCCR_WL_MASK (0xf << 13)
-#define SSI_STCCR_DC_MASK (0x1f << 8)
-#define SSI_STCCR_PM_MASK (0xff << 0)
-
-#define SSI_SRCCR_DIV2 (1 << 18)
-#define SSI_SRCCR_PSR (1 << 15)
-#define SSI_SRCCR_WL(x) ((((x) - 2) >> 1) << 13)
-#define SSI_SRCCR_DC(x) (((x) & 0x1f) << 8)
-#define SSI_SRCCR_PM(x) (((x) & 0xff) << 0)
-#define SSI_SRCCR_WL_MASK (0xf << 13)
-#define SSI_SRCCR_DC_MASK (0x1f << 8)
-#define SSI_SRCCR_PM_MASK (0xff << 0)
-
-
-#define SSI_SFCSR_RFCNT1(x) (((x) & 0xf) << 28)
-#define SSI_SFCSR_TFCNT1(x) (((x) & 0xf) << 24)
-#define SSI_SFCSR_RFWM1(x) (((x) & 0xf) << 20)
-#define SSI_SFCSR_TFWM1(x) (((x) & 0xf) << 16)
-#define SSI_SFCSR_RFCNT0(x) (((x) & 0xf) << 12)
-#define SSI_SFCSR_TFCNT0(x) (((x) & 0xf) << 8)
-#define SSI_SFCSR_RFWM0(x) (((x) & 0xf) << 4)
-#define SSI_SFCSR_TFWM0(x) (((x) & 0xf) << 0)
-
-#define SSI_STR_TEST (1 << 15)
-#define SSI_STR_RCK2TCK (1 << 14)
-#define SSI_STR_RFS2TFS (1 << 13)
-#define SSI_STR_RXSTATE(x) (((x) & 0xf) << 8)
-#define SSI_STR_TXD2RXD (1 << 7)
-#define SSI_STR_TCK2RCK (1 << 6)
-#define SSI_STR_TFS2RFS (1 << 5)
-#define SSI_STR_TXSTATE(x) (((x) & 0xf) << 0)
-
-#define SSI_SOR_CLKOFF (1 << 6)
-#define SSI_SOR_RX_CLR (1 << 5)
-#define SSI_SOR_TX_CLR (1 << 4)
-#define SSI_SOR_INIT (1 << 3)
-#define SSI_SOR_WAIT(x) (((x) & 0x3) << 1)
-#define SSI_SOR_SYNRST (1 << 0)
-
-#define SSI_SACNT_FRDIV(x) (((x) & 0x3f) << 5)
-#define SSI_SACNT_WR (x << 4)
-#define SSI_SACNT_RD (x << 3)
-#define SSI_SACNT_TIF (x << 2)
-#define SSI_SACNT_FV (x << 1)
-#define SSI_SACNT_AC97EN (x << 0)
-
-/* Watermarks for FIFO's */
-#define TXFIFO_WATERMARK 0x4
-#define RXFIFO_WATERMARK 0x4
-
-/* i.MX DAI SSP ID's */
-#define IMX_DAI_SSI0 0 /* SSI1 FIFO 0 */
-#define IMX_DAI_SSI1 1 /* SSI1 FIFO 1 */
-#define IMX_DAI_SSI2 2 /* SSI2 FIFO 0 */
-#define IMX_DAI_SSI3 3 /* SSI2 FIFO 1 */
-
-/* SSI clock sources */
-#define IMX_SSP_SYS_CLK 0
-
-/* SSI audio dividers */
-#define IMX_SSI_TX_DIV_2 0
-#define IMX_SSI_TX_DIV_PSR 1
-#define IMX_SSI_TX_DIV_PM 2
-#define IMX_SSI_RX_DIV_2 3
-#define IMX_SSI_RX_DIV_PSR 4
-#define IMX_SSI_RX_DIV_PM 5
-
-
-/* SSI Div 2 */
-#define IMX_SSI_DIV_2_OFF (~SSI_STCCR_DIV2)
-#define IMX_SSI_DIV_2_ON SSI_STCCR_DIV2
-
-extern struct snd_soc_dai imx_ssi_pcm_dai[4];
-extern int get_ssi_clk(int ssi, struct device *dev);
-extern void put_ssi_clk(int ssi);
-#endif
projects / linux-2.6-block.git / commitdiff