diff options
Diffstat (limited to 'kernel/sound/soc/fsl/pcm030-audio-fabric.c')
| -rw-r--r-- | kernel/sound/soc/fsl/pcm030-audio-fabric.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/kernel/sound/soc/fsl/pcm030-audio-fabric.c b/kernel/sound/soc/fsl/pcm030-audio-fabric.c new file mode 100644 index 000000000..ec731223c --- /dev/null +++ b/kernel/sound/soc/fsl/pcm030-audio-fabric.c @@ -0,0 +1,137 @@ +/* + * Phytec pcm030 driver for the PSC of the Freescale MPC52xx + * configured as AC97 interface + * + * Copyright 2008 Jon Smirl, Digispeaker + * Author: Jon Smirl <jonsmirl@gmail.com> + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/of_device.h> +#include <linux/of_platform.h> + +#include <sound/soc.h> + +#include "mpc5200_dma.h" + +#define DRV_NAME "pcm030-audio-fabric" + +struct pcm030_audio_data { + struct snd_soc_card *card; + struct platform_device *codec_device; +}; + +static struct snd_soc_dai_link pcm030_fabric_dai[] = { +{ + .name = "AC97.0", + .stream_name = "AC97 Analog", + .codec_dai_name = "wm9712-hifi", + .cpu_dai_name = "mpc5200-psc-ac97.0", + .codec_name = "wm9712-codec", +}, +{ + .name = "AC97.1", + .stream_name = "AC97 IEC958", + .codec_dai_name = "wm9712-aux", + .cpu_dai_name = "mpc5200-psc-ac97.1", + .codec_name = "wm9712-codec", +}, +}; + +static struct snd_soc_card pcm030_card = { + .name = "pcm030", + .owner = THIS_MODULE, + .dai_link = pcm030_fabric_dai, + .num_links = ARRAY_SIZE(pcm030_fabric_dai), +}; + +static int pcm030_fabric_probe(struct platform_device *op) +{ + struct device_node *np = op->dev.of_node; + struct device_node *platform_np; + struct snd_soc_card *card = &pcm030_card; + struct pcm030_audio_data *pdata; + int ret; + int i; + + if (!of_machine_is_compatible("phytec,pcm030")) + return -ENODEV; + + pdata = devm_kzalloc(&op->dev, sizeof(struct pcm030_audio_data), + GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + card->dev = &op->dev; + + pdata->card = card; + + platform_np = of_parse_phandle(np, "asoc-platform", 0); + if (!platform_np) { + dev_err(&op->dev, "ac97 not registered\n"); + return -ENODEV; + } + + for (i = 0; i < card->num_links; i++) + card->dai_link[i].platform_of_node = platform_np; + + ret = request_module("snd-soc-wm9712"); + if (ret) + dev_err(&op->dev, "request_module returned: %d\n", ret); + + pdata->codec_device = platform_device_alloc("wm9712-codec", -1); + if (!pdata->codec_device) + dev_err(&op->dev, "platform_device_alloc() failed\n"); + + ret = platform_device_add(pdata->codec_device); + if (ret) + dev_err(&op->dev, "platform_device_add() failed: %d\n", ret); + + ret = snd_soc_register_card(card); + if (ret) + dev_err(&op->dev, "snd_soc_register_card() failed: %d\n", ret); + + platform_set_drvdata(op, pdata); + + return ret; +} + +static int pcm030_fabric_remove(struct platform_device *op) +{ + struct pcm030_audio_data *pdata = platform_get_drvdata(op); + int ret; + + ret = snd_soc_unregister_card(pdata->card); + platform_device_unregister(pdata->codec_device); + + return ret; +} + +static const struct of_device_id pcm030_audio_match[] = { + { .compatible = "phytec,pcm030-audio-fabric", }, + {} +}; +MODULE_DEVICE_TABLE(of, pcm030_audio_match); + +static struct platform_driver pcm030_fabric_driver = { + .probe = pcm030_fabric_probe, + .remove = pcm030_fabric_remove, + .driver = { + .name = DRV_NAME, + .of_match_table = pcm030_audio_match, + }, +}; + +module_platform_driver(pcm030_fabric_driver); + + +MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>"); +MODULE_DESCRIPTION(DRV_NAME ": mpc5200 pcm030 fabric driver"); +MODULE_LICENSE("GPL"); + |