diff options
Diffstat (limited to 'sound/soc/tegra/tegra_codec_rpc.c')
| -rw-r--r-- | sound/soc/tegra/tegra_codec_rpc.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/sound/soc/tegra/tegra_codec_rpc.c b/sound/soc/tegra/tegra_codec_rpc.c new file mode 100644 index 000000000000..ea97d0f91337 --- /dev/null +++ b/sound/soc/tegra/tegra_codec_rpc.c @@ -0,0 +1,180 @@ +/* + * sound/soc/tegra/tegra_codec_rpc.c + * + * ALSA SOC driver for NVIDIA Tegra SoCs + * + * Copyright (C) 2010 NVIDIA Corporation + * + * 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, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <sound/soc.h> +#include <sound/pcm.h> +#include <sound/initval.h> + +#include "tegra_transport.h" + +static int tegra_generic_codec_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + return 0; +} + +static int tegra_generic_codec_mute(struct snd_soc_dai *dai, int mute) +{ + return 0; +} + +static int tegra_generic_codec_set_dai_fmt(struct snd_soc_dai *codec_dai, + unsigned int fmt) +{ + return 0; +} + +static int tegra_generic_codec_set_dai_clkdiv(struct snd_soc_dai *codec_dai, + int div_id, int div) +{ + return 0; +} + +static int tegra_generic_codec_set_dai_pll(struct snd_soc_dai *codec_dai, + int pll_id, unsigned int freq_in, unsigned int freq_out) +{ + return 0; +} + +static int tegra_generic_codec_set_dai_sysclk(struct snd_soc_dai *codec_dai, + int clk_id, unsigned int freq, int dir) +{ + return 0; +} + +static struct snd_soc_dai_ops dit_stub_ops = { + .hw_params = tegra_generic_codec_hw_params, + .digital_mute = tegra_generic_codec_mute, + .set_fmt = tegra_generic_codec_set_dai_fmt, + .set_clkdiv = tegra_generic_codec_set_dai_clkdiv, + .set_pll = tegra_generic_codec_set_dai_pll, + .set_sysclk = tegra_generic_codec_set_dai_sysclk, +}; + +struct snd_soc_dai dit_stub_dai = { + .name = "tegra-codec-rpc", + .playback = { + .stream_name = "Playback", + .channels_min = 1, + .channels_max = 2, + .rates = TEGRA_SAMPLE_RATES, + .formats = TEGRA_SAMPLE_FORMATS, + }, + .capture = { + .stream_name = "Capture", + .channels_min = 1, + .channels_max = 2, + .rates = TEGRA_SAMPLE_RATES, + .formats = TEGRA_SAMPLE_FORMATS, + }, + .ops = &dit_stub_ops, +}; +EXPORT_SYMBOL_GPL(dit_stub_dai); + +static int __init dit_modinit(void) +{ + return snd_soc_register_dai(&dit_stub_dai); +} + +static void __exit dit_exit(void) +{ + snd_soc_unregister_dai(&dit_stub_dai); +} + +module_init(dit_modinit); +module_exit(dit_exit); + +static int codec_soc_probe(struct platform_device *pdev) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + struct snd_soc_codec *codec; + int ret = 0; + + socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); + if (!socdev->card->codec) + return -ENOMEM; + + codec = socdev->card->codec; + mutex_init(&codec->mutex); + + codec->name = "tegra-generic-codec"; + codec->owner = THIS_MODULE; + codec->dai = &dit_stub_dai; + codec->num_dai = 1; + codec->write = NULL; + codec->read = NULL; + INIT_LIST_HEAD(&codec->dapm_widgets); + INIT_LIST_HEAD(&codec->dapm_paths); + /* Register PCMs. */ + ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); + if (ret < 0) { + printk(KERN_ERR "codec: failed to create pcms\n"); + goto pcm_err; + } + /* Register Card. */ + ret = snd_soc_init_card(socdev); + if (ret < 0) { + printk(KERN_ERR "codec: failed to register card\n"); + goto card_err; + } + + return ret; + +card_err: + snd_soc_free_pcms(socdev); +pcm_err: + kfree(socdev->card->codec); + + return ret; +} + +static int codec_soc_remove(struct platform_device *pdev) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + struct snd_soc_codec *codec = socdev->card->codec; + + if (!codec) + return 0; + + snd_soc_free_pcms(socdev); + kfree(socdev->card->codec); + + return 0; +} + +#define codec_soc_suspend NULL +#define codec_soc_resume NULL + +struct snd_soc_codec_device soc_codec_dev_tegra_generic_codec = { + .probe = codec_soc_probe, + .remove = codec_soc_remove, + .suspend = codec_soc_suspend, + .resume = codec_soc_resume, +}; +EXPORT_SYMBOL_GPL(soc_codec_dev_tegra_generic_codec); + +/* Module information */ +MODULE_DESCRIPTION("Tegra Codec RPC Interface"); +MODULE_LICENSE("GPL"); |