sound: ASoC: Blackfin: I2S CPU DAI driver
[Additional coding standards fixes by Mark Brown.] Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Cliff Cai
Jaroslav Kysela
parent
88740da15c
commit
912c2ac94e
2 changed files with 306 additions and 0 deletions
292
sound/soc/blackfin/bf5xx-i2s.c
Normal file
292
sound/soc/blackfin/bf5xx-i2s.c
Normal file
|
|
@ -0,0 +1,292 @@
|
|||
/*
|
||||
* File: sound/soc/blackfin/bf5xx-i2s.c
|
||||
* Author: Cliff Cai <Cliff.Cai@analog.com>
|
||||
*
|
||||
* Created: Tue June 06 2008
|
||||
* Description: Blackfin I2S CPU DAI driver
|
||||
*
|
||||
* Modified:
|
||||
* Copyright 2008 Analog Devices Inc.
|
||||
*
|
||||
* Bugs: Enter bugs at http://blackfin.uclinux.org/
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, see the file COPYING, or write
|
||||
* to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#include <linux/init.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/delay.h>
|
||||
#include <sound/core.h>
|
||||
#include <sound/pcm.h>
|
||||
#include <sound/pcm_params.h>
|
||||
#include <sound/initval.h>
|
||||
#include <sound/soc.h>
|
||||
|
||||
#include <asm/irq.h>
|
||||
#include <asm/portmux.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <linux/gpio.h>
|
||||
|
||||
#include "bf5xx-sport.h"
|
||||
#include "bf5xx-i2s.h"
|
||||
|
||||
struct bf5xx_i2s_port {
|
||||
u16 tcr1;
|
||||
u16 rcr1;
|
||||
u16 tcr2;
|
||||
u16 rcr2;
|
||||
int counter;
|
||||
};
|
||||
|
||||
static struct bf5xx_i2s_port bf5xx_i2s;
|
||||
static int sport_num = CONFIG_SND_BF5XX_SPORT_NUM;
|
||||
|
||||
static struct sport_param sport_params[2] = {
|
||||
{
|
||||
.dma_rx_chan = CH_SPORT0_RX,
|
||||
.dma_tx_chan = CH_SPORT0_TX,
|
||||
.err_irq = IRQ_SPORT0_ERROR,
|
||||
.regs = (struct sport_register *)SPORT0_TCR1,
|
||||
},
|
||||
{
|
||||
.dma_rx_chan = CH_SPORT1_RX,
|
||||
.dma_tx_chan = CH_SPORT1_TX,
|
||||
.err_irq = IRQ_SPORT1_ERROR,
|
||||
.regs = (struct sport_register *)SPORT1_TCR1,
|
||||
}
|
||||
};
|
||||
|
||||
static int bf5xx_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai,
|
||||
unsigned int fmt)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
/* interface format:support I2S,slave mode */
|
||||
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
|
||||
case SND_SOC_DAIFMT_I2S:
|
||||
break;
|
||||
case SND_SOC_DAIFMT_LEFT_J:
|
||||
ret = -EINVAL;
|
||||
break;
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
break;
|
||||
}
|
||||
|
||||
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
|
||||
case SND_SOC_DAIFMT_CBS_CFS:
|
||||
ret = -EINVAL;
|
||||
break;
|
||||
case SND_SOC_DAIFMT_CBM_CFS:
|
||||
ret = -EINVAL;
|
||||
break;
|
||||
case SND_SOC_DAIFMT_CBM_CFM:
|
||||
break;
|
||||
case SND_SOC_DAIFMT_CBS_CFM:
|
||||
ret = -EINVAL;
|
||||
break;
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
break;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int bf5xx_i2s_startup(struct snd_pcm_substream *substream)
|
||||
{
|
||||
pr_debug("%s enter\n", __func__);
|
||||
|
||||
/*this counter is used for counting how many pcm streams are opened*/
|
||||
bf5xx_i2s.counter++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bf5xx_i2s_hw_params(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_hw_params *params)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
bf5xx_i2s.tcr2 &= ~0x1f;
|
||||
bf5xx_i2s.rcr2 &= ~0x1f;
|
||||
switch (params_format(params)) {
|
||||
case SNDRV_PCM_FORMAT_S16_LE:
|
||||
bf5xx_i2s.tcr2 |= 15;
|
||||
bf5xx_i2s.rcr2 |= 15;
|
||||
break;
|
||||
case SNDRV_PCM_FORMAT_S24_LE:
|
||||
bf5xx_i2s.tcr2 |= 23;
|
||||
bf5xx_i2s.rcr2 |= 23;
|
||||
break;
|
||||
case SNDRV_PCM_FORMAT_S32_LE:
|
||||
bf5xx_i2s.tcr2 |= 31;
|
||||
bf5xx_i2s.rcr2 |= 31;
|
||||
break;
|
||||
}
|
||||
|
||||
if (bf5xx_i2s.counter == 1) {
|
||||
/*
|
||||
* TX and RX are not independent,they are enabled at the
|
||||
* same time, even if only one side is running. So, we
|
||||
* need to configure both of them at the time when the first
|
||||
* stream is opened.
|
||||
*
|
||||
* CPU DAI format:I2S, slave mode.
|
||||
*/
|
||||
ret = sport_config_rx(sport_handle, RFSR | RCKFE,
|
||||
RSFSE|bf5xx_i2s.rcr2, 0, 0);
|
||||
if (ret) {
|
||||
pr_err("SPORT is busy!\n");
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
ret = sport_config_tx(sport_handle, TFSR | TCKFE,
|
||||
TSFSE|bf5xx_i2s.tcr2, 0, 0);
|
||||
if (ret) {
|
||||
pr_err("SPORT is busy!\n");
|
||||
return -EBUSY;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void bf5xx_i2s_shutdown(struct snd_pcm_substream *substream)
|
||||
{
|
||||
pr_debug("%s enter\n", __func__);
|
||||
bf5xx_i2s.counter--;
|
||||
}
|
||||
|
||||
static int bf5xx_i2s_probe(struct platform_device *pdev,
|
||||
struct snd_soc_dai *dai)
|
||||
{
|
||||
u16 sport_req[][7] = {
|
||||
{ P_SPORT0_DTPRI, P_SPORT0_TSCLK, P_SPORT0_RFS,
|
||||
P_SPORT0_DRPRI, P_SPORT0_RSCLK, 0},
|
||||
{ P_SPORT1_DTPRI, P_SPORT1_TSCLK, P_SPORT1_RFS,
|
||||
P_SPORT1_DRPRI, P_SPORT1_RSCLK, 0},
|
||||
};
|
||||
|
||||
pr_debug("%s enter\n", __func__);
|
||||
if (peripheral_request_list(&sport_req[sport_num][0], "soc-audio")) {
|
||||
pr_err("Requesting Peripherals failed\n");
|
||||
return -EFAULT;
|
||||
}
|
||||
|
||||
/* request DMA for SPORT */
|
||||
sport_handle = sport_init(&sport_params[sport_num], 4, \
|
||||
2 * sizeof(u32), NULL);
|
||||
if (!sport_handle) {
|
||||
peripheral_free_list(&sport_req[sport_num][0]);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
static int bf5xx_i2s_suspend(struct platform_device *dev,
|
||||
struct snd_soc_dai *dai)
|
||||
{
|
||||
struct sport_device *sport =
|
||||
(struct sport_device *)dai->private_data;
|
||||
|
||||
pr_debug("%s : sport %d\n", __func__, dai->id);
|
||||
if (!dai->active)
|
||||
return 0;
|
||||
if (dai->capture.active)
|
||||
sport_rx_stop(sport);
|
||||
if (dai->playback.active)
|
||||
sport_tx_stop(sport);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bf5xx_i2s_resume(struct platform_device *pdev,
|
||||
struct snd_soc_dai *dai)
|
||||
{
|
||||
int ret;
|
||||
struct sport_device *sport =
|
||||
(struct sport_device *)dai->private_data;
|
||||
|
||||
pr_debug("%s : sport %d\n", __func__, dai->id);
|
||||
if (!dai->active)
|
||||
return 0;
|
||||
|
||||
ret = sport_config_rx(sport_handle, RFSR | RCKFE, RSFSE|0x1f, 0, 0);
|
||||
if (ret) {
|
||||
pr_err("SPORT is busy!\n");
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
ret = sport_config_tx(sport_handle, TFSR | TCKFE, TSFSE|0x1f, 0, 0);
|
||||
if (ret) {
|
||||
pr_err("SPORT is busy!\n");
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
if (dai->capture.active)
|
||||
sport_rx_start(sport);
|
||||
if (dai->playback.active)
|
||||
sport_tx_start(sport);
|
||||
return 0;
|
||||
}
|
||||
|
||||
#else
|
||||
#define bf5xx_i2s_suspend NULL
|
||||
#define bf5xx_i2s_resume NULL
|
||||
#endif
|
||||
|
||||
#define BF5XX_I2S_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
|
||||
SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
|
||||
SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | \
|
||||
SNDRV_PCM_RATE_96000)
|
||||
|
||||
#define BF5XX_I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE |\
|
||||
SNDRV_PCM_FMTBIT_S32_LE)
|
||||
|
||||
struct snd_soc_dai bf5xx_i2s_dai = {
|
||||
.name = "bf5xx-i2s",
|
||||
.id = 0,
|
||||
.type = SND_SOC_DAI_I2S,
|
||||
.probe = bf5xx_i2s_probe,
|
||||
.suspend = bf5xx_i2s_suspend,
|
||||
.resume = bf5xx_i2s_resume,
|
||||
.playback = {
|
||||
.channels_min = 2,
|
||||
.channels_max = 2,
|
||||
.rates = BF5XX_I2S_RATES,
|
||||
.formats = BF5XX_I2S_FORMATS,},
|
||||
.capture = {
|
||||
.channels_min = 2,
|
||||
.channels_max = 2,
|
||||
.rates = BF5XX_I2S_RATES,
|
||||
.formats = BF5XX_I2S_FORMATS,},
|
||||
.ops = {
|
||||
.startup = bf5xx_i2s_startup,
|
||||
.shutdown = bf5xx_i2s_shutdown,
|
||||
.hw_params = bf5xx_i2s_hw_params,},
|
||||
.dai_ops = {
|
||||
.set_fmt = bf5xx_i2s_set_dai_fmt,
|
||||
},
|
||||
};
|
||||
EXPORT_SYMBOL_GPL(bf5xx_i2s_dai);
|
||||
|
||||
/* Module information */
|
||||
MODULE_AUTHOR("Cliff Cai");
|
||||
MODULE_DESCRIPTION("I2S driver for ADI Blackfin");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
14
sound/soc/blackfin/bf5xx-i2s.h
Normal file
14
sound/soc/blackfin/bf5xx-i2s.h
Normal file
|
|
@ -0,0 +1,14 @@
|
|||
/*
|
||||
* linux/sound/arm/bf5xx-i2s.h
|
||||
*
|
||||
* 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 _BF5XX_I2S_H
|
||||
#define _BF5XX_I2S_H
|
||||
|
||||
extern struct snd_soc_dai bf5xx_i2s_dai;
|
||||
|
||||
#endif
|
||||
Loading…
Reference in a new issue