/* * tegra_sgtl5000.c - Tegra machine ASoC driver for boards using SGTL5000 codec * * Author: Marcel Ziswiler <marcel@ziswiler.com> * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. * * This program is distributed in the hope 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 <http://www.gnu.org/licenses/>. * * Based on code copyright/by: * * Copyright (C) 2010-2012 - NVIDIA, Inc. * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd. * Copyright 2007 Wolfson Microelectronics PLC. */ #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/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> #include "../codecs/sgtl5000.h" #include "tegra_asoc_utils.h" #define DRV_NAME "tegra-snd-sgtl5000" struct tegra_sgtl5000 { struct tegra_asoc_utils_data util_data; }; static int tegra_sgtl5000_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; struct snd_soc_card *card = rtd->card; struct tegra_sgtl5000 *machine = snd_soc_card_get_drvdata(card); int srate, mclk; int err; srate = params_rate(params); switch (srate) { case 11025: case 22050: case 44100: case 88200: mclk = 11289600; break; default: mclk = 12288000; break; } err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk); if (err < 0) { dev_err(card->dev, "Can't configure clocks\n"); return err; } err = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk, SND_SOC_CLOCK_IN); if (err < 0) { dev_err(card->dev, "codec_dai clock not set\n"); return err; } return 0; } static const struct snd_soc_ops tegra_sgtl5000_ops = { .hw_params = tegra_sgtl5000_hw_params, }; static const struct snd_soc_dapm_widget tegra_sgtl5000_dapm_widgets[] = { SND_SOC_DAPM_HP("Headphone Jack", NULL), SND_SOC_DAPM_LINE("Line In Jack", NULL), SND_SOC_DAPM_MIC("Mic Jack", NULL), }; static struct snd_soc_dai_link tegra_sgtl5000_dai = { .name = "sgtl5000", .stream_name = "HiFi", .codec_dai_name = "sgtl5000", .ops = &tegra_sgtl5000_ops, .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS, }; static struct snd_soc_card snd_soc_tegra_sgtl5000 = { .name = "tegra-sgtl5000", .owner = THIS_MODULE, .dai_link = &tegra_sgtl5000_dai, .num_links = 1, .dapm_widgets = tegra_sgtl5000_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(tegra_sgtl5000_dapm_widgets), .fully_routed = true, }; static int tegra_sgtl5000_driver_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct snd_soc_card *card = &snd_soc_tegra_sgtl5000; struct tegra_sgtl5000 *machine; int ret; machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_sgtl5000), GFP_KERNEL); if (!machine) { dev_err(&pdev->dev, "Can't allocate tegra_sgtl5000 struct\n"); return -ENOMEM; } card->dev = &pdev->dev; platform_set_drvdata(pdev, card); snd_soc_card_set_drvdata(card, machine); ret = snd_soc_of_parse_card_name(card, "nvidia,model"); if (ret) goto err; ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing"); if (ret) goto err; tegra_sgtl5000_dai.codec_of_node = of_parse_phandle(np, "nvidia,audio-codec", 0); if (!tegra_sgtl5000_dai.codec_of_node) { dev_err(&pdev->dev, "Property 'nvidia,audio-codec' missing or invalid\n"); ret = -EINVAL; goto err; } tegra_sgtl5000_dai.cpu_of_node = of_parse_phandle(np, "nvidia,i2s-controller", 0); if (!tegra_sgtl5000_dai.cpu_of_node) { dev_err(&pdev->dev, "Property 'nvidia,i2s-controller' missing/invalid\n"); ret = -EINVAL; goto err; } tegra_sgtl5000_dai.platform_of_node = tegra_sgtl5000_dai.cpu_of_node; ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev); if (ret) goto err; ret = snd_soc_register_card(card); if (ret) { dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); goto err_fini_utils; } return 0; err_fini_utils: tegra_asoc_utils_fini(&machine->util_data); err: return ret; } static int tegra_sgtl5000_driver_remove(struct platform_device *pdev) { struct snd_soc_card *card = platform_get_drvdata(pdev); struct tegra_sgtl5000 *machine = snd_soc_card_get_drvdata(card); int ret; ret = snd_soc_unregister_card(card); tegra_asoc_utils_fini(&machine->util_data); return ret; } static const struct of_device_id tegra_sgtl5000_of_match[] = { { .compatible = "nvidia,tegra-audio-sgtl5000", }, { /* sentinel */ }, }; static struct platform_driver tegra_sgtl5000_driver = { .driver = { .name = DRV_NAME, .pm = &snd_soc_pm_ops, .of_match_table = tegra_sgtl5000_of_match, }, .probe = tegra_sgtl5000_driver_probe, .remove = tegra_sgtl5000_driver_remove, }; module_platform_driver(tegra_sgtl5000_driver); MODULE_AUTHOR("Marcel Ziswiler <marcel@ziswiler.com>"); MODULE_DESCRIPTION("Tegra SGTL5000 machine ASoC driver"); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:" DRV_NAME); MODULE_DEVICE_TABLE(of, tegra_sgtl5000_of_match);