diff options
Diffstat (limited to 'sound/soc/blackfin/bf5xx-ad193x.c')
| -rw-r--r-- | sound/soc/blackfin/bf5xx-ad193x.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/sound/soc/blackfin/bf5xx-ad193x.c b/sound/soc/blackfin/bf5xx-ad193x.c new file mode 100644 index 00000000..0e55e9f2 --- /dev/null +++ b/sound/soc/blackfin/bf5xx-ad193x.c @@ -0,0 +1,151 @@ +/* + * File: sound/soc/blackfin/bf5xx-ad193x.c + * Author: Barry Song <Barry.Song@analog.com> + * + * Created: Thur June 4 2009 + * Description: Board driver for ad193x sound chip + * + * 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/blackfin.h> +#include <asm/cacheflush.h> +#include <asm/irq.h> +#include <asm/dma.h> +#include <asm/portmux.h> + +#include "../codecs/ad193x.h" + +#include "bf5xx-tdm-pcm.h" +#include "bf5xx-tdm.h" + +static struct snd_soc_card bf5xx_ad193x; + +static int bf5xx_ad193x_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 *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *codec_dai = rtd->codec_dai; + unsigned int clk = 0; + unsigned int channel_map[] = {0, 1, 2, 3, 4, 5, 6, 7}; + int ret = 0; + + switch (params_rate(params)) { + case 48000: + clk = 24576000; + break; + } + + /* set the codec system clock for DAC and ADC */ + ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk, + SND_SOC_CLOCK_IN); + if (ret < 0) + return ret; + + /* set codec DAI slots, 8 channels, all channels are enabled */ + ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xFF, 0xFF, 8, 32); + if (ret < 0) + return ret; + + /* set cpu DAI channel mapping */ + ret = snd_soc_dai_set_channel_map(cpu_dai, ARRAY_SIZE(channel_map), + channel_map, ARRAY_SIZE(channel_map), channel_map); + if (ret < 0) + return ret; + + return 0; +} + +#define BF5XX_AD193X_DAIFMT (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_IF | \ + SND_SOC_DAIFMT_CBM_CFM) + +static struct snd_soc_ops bf5xx_ad193x_ops = { + .hw_params = bf5xx_ad193x_hw_params, +}; + +static struct snd_soc_dai_link bf5xx_ad193x_dai[] = { + { + .name = "ad193x", + .stream_name = "AD193X", + .cpu_dai_name = "bfin-tdm.0", + .codec_dai_name ="ad193x-hifi", + .platform_name = "bfin-tdm-pcm-audio", + .codec_name = "spi0.5", + .ops = &bf5xx_ad193x_ops, + .dai_fmt = BF5XX_AD193X_DAIFMT, + }, + { + .name = "ad193x", + .stream_name = "AD193X", + .cpu_dai_name = "bfin-tdm.1", + .codec_dai_name ="ad193x-hifi", + .platform_name = "bfin-tdm-pcm-audio", + .codec_name = "spi0.5", + .ops = &bf5xx_ad193x_ops, + .dai_fmt = BF5XX_AD193X_DAIFMT, + }, +}; + +static struct snd_soc_card bf5xx_ad193x = { + .name = "bfin-ad193x", + .owner = THIS_MODULE, + .dai_link = &bf5xx_ad193x_dai[CONFIG_SND_BF5XX_SPORT_NUM], + .num_links = 1, +}; + +static struct platform_device *bfxx_ad193x_snd_device; + +static int __init bf5xx_ad193x_init(void) +{ + int ret; + + bfxx_ad193x_snd_device = platform_device_alloc("soc-audio", -1); + if (!bfxx_ad193x_snd_device) + return -ENOMEM; + + platform_set_drvdata(bfxx_ad193x_snd_device, &bf5xx_ad193x); + ret = platform_device_add(bfxx_ad193x_snd_device); + + if (ret) + platform_device_put(bfxx_ad193x_snd_device); + + return ret; +} + +static void __exit bf5xx_ad193x_exit(void) +{ + platform_device_unregister(bfxx_ad193x_snd_device); +} + +module_init(bf5xx_ad193x_init); +module_exit(bf5xx_ad193x_exit); + +/* Module information */ +MODULE_AUTHOR("Barry Song"); +MODULE_DESCRIPTION("ALSA SoC AD193X board driver"); +MODULE_LICENSE("GPL"); + |