diff options
Diffstat (limited to 'sound/soc/imx')
| -rw-r--r-- | sound/soc/imx/mx1_mx2-pcm.c | 488 | ||||
| -rw-r--r-- | sound/soc/imx/mx1_mx2-pcm.h | 26 | ||||
| -rw-r--r-- | sound/soc/imx/mx27vis_wm8974.c | 317 | ||||
| -rw-r--r-- | sound/soc/imx/mxc-ssi.c | 860 | ||||
| -rw-r--r-- | sound/soc/imx/mxc-ssi.h | 238 |
5 files changed, 0 insertions, 1929 deletions
diff --git a/sound/soc/imx/mx1_mx2-pcm.c b/sound/soc/imx/mx1_mx2-pcm.c deleted file mode 100644 index bffffcd5ff3..00000000000 --- a/sound/soc/imx/mx1_mx2-pcm.c +++ /dev/null @@ -1,488 +0,0 @@ -/* - * 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"); diff --git a/sound/soc/imx/mx1_mx2-pcm.h b/sound/soc/imx/mx1_mx2-pcm.h deleted file mode 100644 index 2e528106570..00000000000 --- a/sound/soc/imx/mx1_mx2-pcm.h +++ /dev/null @@ -1,26 +0,0 @@ -/* - * 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 diff --git a/sound/soc/imx/mx27vis_wm8974.c b/sound/soc/imx/mx27vis_wm8974.c deleted file mode 100644 index 0267d2d9168..00000000000 --- a/sound/soc/imx/mx27vis_wm8974.c +++ /dev/null @@ -1,317 +0,0 @@ -/* - * 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"); diff --git a/sound/soc/imx/mxc-ssi.c b/sound/soc/imx/mxc-ssi.c deleted file mode 100644 index ccdefe60e75..00000000000 --- a/sound/soc/imx/mxc-ssi.c +++ /dev/null @@ -1,860 +0,0 @@ -/* - * 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"); diff --git a/sound/soc/imx/mxc-ssi.h b/sound/soc/imx/mxc-ssi.h deleted file mode 100644 index 12bbdc9c7ec..00000000000 --- a/sound/soc/imx/mxc-ssi.h +++ /dev/null @@ -1,238 +0,0 @@ -/* - * 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 |