+++ /dev/null
-/*
- * tegra20_wm9712.c - Tegra machine ASoC driver for boards using WM9712 codec.
- *
- * Copyright 2012 Lucas Stach <dev@lynxeye.de>
- *
- * Partly based on code copyright/by:
- * Copyright 2011,2012 Toradex Inc.
- *
- * 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.
- *
- * 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.
- *
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/gpio.h>
-#include <linux/of_gpio.h>
-
-#include <sound/core.h>
-#include <sound/jack.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/soc.h>
-
-#define DRV_NAME "tegra-snd-wm9712"
-
-struct tegra_wm9712 {
- struct platform_device *codec;
-};
-
-static const struct snd_soc_dapm_widget tegra_wm9712_dapm_widgets[] = {
- SND_SOC_DAPM_HP("Headphone", NULL),
- SND_SOC_DAPM_LINE("LineIn", NULL),
- SND_SOC_DAPM_MIC("Mic", NULL),
-};
-
-static int tegra_wm9712_init(struct snd_soc_pcm_runtime *rtd)
-{
- struct snd_soc_dai *codec_dai = rtd->codec_dai;
- struct snd_soc_codec *codec = codec_dai->codec;
- struct snd_soc_dapm_context *dapm = &codec->dapm;
-
- snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
-
- return snd_soc_dapm_sync(dapm);
-}
-
-static struct snd_soc_dai_link tegra_wm9712_dai = {
- .name = "AC97 HiFi",
- .stream_name = "AC97 HiFi",
- .cpu_dai_name = "tegra-ac97-pcm",
- .codec_dai_name = "wm9712-hifi",
- .codec_name = "wm9712-codec",
- .init = tegra_wm9712_init,
-};
-
-static struct snd_soc_card snd_soc_tegra_wm9712 = {
- .name = "tegra-wm9712",
- .owner = THIS_MODULE,
- .dai_link = &tegra_wm9712_dai,
- .num_links = 1,
-
- .dapm_widgets = tegra_wm9712_dapm_widgets,
- .num_dapm_widgets = ARRAY_SIZE(tegra_wm9712_dapm_widgets),
- .fully_routed = true,
-};
-
-static int tegra_wm9712_driver_probe(struct platform_device *pdev)
-{
- struct device_node *np = pdev->dev.of_node;
- struct snd_soc_card *card = &snd_soc_tegra_wm9712;
- struct tegra_wm9712 *machine;
- int ret;
-
- if (!pdev->dev.of_node) {
- dev_err(&pdev->dev, "No platform data supplied\n");
- return -EINVAL;
- }
-
- machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm9712),
- GFP_KERNEL);
- if (!machine) {
- dev_err(&pdev->dev, "Can't allocate tegra_wm9712 struct\n");
- return -ENOMEM;
- }
-
- card->dev = &pdev->dev;
- platform_set_drvdata(pdev, card);
- snd_soc_card_set_drvdata(card, machine);
-
- machine->codec = platform_device_alloc("wm9712-codec", -1);
- if (!machine->codec) {
- dev_err(&pdev->dev, "Can't allocate wm9712 platform device\n");
- return -ENOMEM;
- }
-
- ret = platform_device_add(machine->codec);
- if (ret)
- goto codec_put;
-
- ret = snd_soc_of_parse_card_name(card, "nvidia,model");
- if (ret)
- goto codec_unregister;
-
- ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
- if (ret)
- goto codec_unregister;
-
- tegra_wm9712_dai.cpu_of_node = of_parse_phandle(np,
- "nvidia,ac97-controller", 0);
- if (!tegra_wm9712_dai.cpu_of_node) {
- dev_err(&pdev->dev,
- "Property 'nvidia,ac97-controller' missing or invalid\n");
- ret = -EINVAL;
- goto codec_unregister;
- }
-
- tegra_wm9712_dai.platform_of_node = tegra_wm9712_dai.cpu_of_node;
-
- ret = snd_soc_register_card(card);
- if (ret) {
- dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
- ret);
- goto codec_unregister;
- }
-
- return 0;
-
-codec_unregister:
- platform_device_del(machine->codec);
-codec_put:
- platform_device_put(machine->codec);
- return ret;
-}
-
-static int tegra_wm9712_driver_remove(struct platform_device *pdev)
-{
- struct snd_soc_card *card = platform_get_drvdata(pdev);
- struct tegra_wm9712 *machine = snd_soc_card_get_drvdata(card);
-
- snd_soc_unregister_card(card);
-
- platform_device_unregister(machine->codec);
-
- return 0;
-}
-
-static const struct of_device_id tegra_wm9712_of_match[] __devinitconst = {
- { .compatible = "nvidia,tegra-audio-wm9712", },
- {},
-};
-
-static struct platform_driver tegra_wm9712_driver = {
- .driver = {
- .name = DRV_NAME,
- .owner = THIS_MODULE,
- .pm = &snd_soc_pm_ops,
- .of_match_table = tegra_wm9712_of_match,
- },
- .probe = tegra_wm9712_driver_probe,
- .remove = tegra_wm9712_driver_remove,
-};
-module_platform_driver(tegra_wm9712_driver);
-
-MODULE_AUTHOR("Lucas Stach");
-MODULE_DESCRIPTION("Tegra+WM9712 machine ASoC driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:" DRV_NAME);
-MODULE_DEVICE_TABLE(of, tegra_wm9712_of_match);