| /* |
| * File: sound/soc/blackfin/bf5xx-ssm2602.c |
| * Author: Cliff Cai <Cliff.Cai@analog.com> |
| * |
| * Created: Tue June 06 2008 |
| * Description: board driver for SSM2602 sound chip |
| * |
| * 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/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/device.h> |
| |
| #include <sound/core.h> |
| #include <sound/pcm.h> |
| #include <sound/soc.h> |
| #include <sound/pcm_params.h> |
| |
| #include <asm/dma.h> |
| #include <asm/portmux.h> |
| #include <linux/gpio.h> |
| #include "../codecs/ssm2602.h" |
| #include "bf5xx-sport.h" |
| #include "bf5xx-i2s-pcm.h" |
| |
| static struct snd_soc_card bf5xx_ssm2602; |
| |
| static int bf5xx_ssm2602_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->codec_dai; |
| unsigned int clk = 0; |
| int ret = 0; |
| |
| pr_debug("%s rate %d format %x\n", __func__, params_rate(params), |
| params_format(params)); |
| /* |
| * If you are using a crystal source which frequency is not 12MHz |
| * then modify the below case statement with frequency of the crystal. |
| * |
| * If you are using the SPORT to generate clocking then this is |
| * where to do it. |
| */ |
| |
| switch (params_rate(params)) { |
| case 8000: |
| case 16000: |
| case 48000: |
| case 96000: |
| case 11025: |
| case 22050: |
| case 44100: |
| clk = 12000000; |
| break; |
| } |
| |
| ret = snd_soc_dai_set_sysclk(codec_dai, SSM2602_SYSCLK, clk, |
| SND_SOC_CLOCK_IN); |
| if (ret < 0) |
| return ret; |
| |
| return 0; |
| } |
| |
| static struct snd_soc_ops bf5xx_ssm2602_ops = { |
| .hw_params = bf5xx_ssm2602_hw_params, |
| }; |
| |
| /* CODEC is master for BCLK and LRC in this configuration. */ |
| #define BF5XX_SSM2602_DAIFMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \ |
| SND_SOC_DAIFMT_CBM_CFM) |
| |
| static struct snd_soc_dai_link bf5xx_ssm2602_dai[] = { |
| { |
| .name = "ssm2602", |
| .stream_name = "SSM2602", |
| .cpu_dai_name = "bfin-i2s.0", |
| .codec_dai_name = "ssm2602-hifi", |
| .platform_name = "bfin-i2s-pcm-audio", |
| .codec_name = "ssm2602.0-001b", |
| .ops = &bf5xx_ssm2602_ops, |
| .dai_fmt = BF5XX_SSM2602_DAIFMT, |
| }, |
| { |
| .name = "ssm2602", |
| .stream_name = "SSM2602", |
| .cpu_dai_name = "bfin-i2s.1", |
| .codec_dai_name = "ssm2602-hifi", |
| .platform_name = "bfin-i2s-pcm-audio", |
| .codec_name = "ssm2602.0-001b", |
| .ops = &bf5xx_ssm2602_ops, |
| .dai_fmt = BF5XX_SSM2602_DAIFMT, |
| }, |
| }; |
| |
| static struct snd_soc_card bf5xx_ssm2602 = { |
| .name = "bfin-ssm2602", |
| .owner = THIS_MODULE, |
| .dai_link = &bf5xx_ssm2602_dai[CONFIG_SND_BF5XX_SPORT_NUM], |
| .num_links = 1, |
| }; |
| |
| static struct platform_device *bf5xx_ssm2602_snd_device; |
| |
| static int __init bf5xx_ssm2602_init(void) |
| { |
| int ret; |
| |
| pr_debug("%s enter\n", __func__); |
| bf5xx_ssm2602_snd_device = platform_device_alloc("soc-audio", -1); |
| if (!bf5xx_ssm2602_snd_device) |
| return -ENOMEM; |
| |
| platform_set_drvdata(bf5xx_ssm2602_snd_device, &bf5xx_ssm2602); |
| ret = platform_device_add(bf5xx_ssm2602_snd_device); |
| |
| if (ret) |
| platform_device_put(bf5xx_ssm2602_snd_device); |
| |
| return ret; |
| } |
| |
| static void __exit bf5xx_ssm2602_exit(void) |
| { |
| pr_debug("%s enter\n", __func__); |
| platform_device_unregister(bf5xx_ssm2602_snd_device); |
| } |
| |
| module_init(bf5xx_ssm2602_init); |
| module_exit(bf5xx_ssm2602_exit); |
| |
| /* Module information */ |
| MODULE_AUTHOR("Cliff Cai"); |
| MODULE_DESCRIPTION("ALSA SoC SSM2602 BF527-EZKIT"); |
| MODULE_LICENSE("GPL"); |
| |