| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * tegra_wm8753.c - Tegra machine ASoC driver for boards using WM8753 codec. |
| * |
| * Author: Stephen Warren <swarren@nvidia.com> |
| * Copyright (C) 2010-2012 - NVIDIA, Inc. |
| * |
| * Based on code copyright/by: |
| * |
| * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd. |
| * |
| * Copyright 2007 Wolfson Microelectronics PLC. |
| * Author: Graeme Gregory |
| * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com |
| */ |
| |
| #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> |
| |
| #include "../codecs/wm8753.h" |
| |
| #include "tegra_asoc_utils.h" |
| |
| #define DRV_NAME "tegra-snd-wm8753" |
| |
| struct tegra_wm8753 { |
| struct tegra_asoc_utils_data util_data; |
| }; |
| |
| static int tegra_wm8753_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 = asoc_rtd_to_codec(rtd, 0); |
| struct snd_soc_card *card = rtd->card; |
| struct tegra_wm8753 *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, WM8753_MCLK, 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_wm8753_ops = { |
| .hw_params = tegra_wm8753_hw_params, |
| }; |
| |
| static const struct snd_soc_dapm_widget tegra_wm8753_dapm_widgets[] = { |
| SND_SOC_DAPM_HP("Headphone Jack", NULL), |
| SND_SOC_DAPM_MIC("Mic Jack", NULL), |
| }; |
| |
| SND_SOC_DAILINK_DEFS(pcm, |
| DAILINK_COMP_ARRAY(COMP_EMPTY()), |
| DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8753-hifi")), |
| DAILINK_COMP_ARRAY(COMP_EMPTY())); |
| |
| static struct snd_soc_dai_link tegra_wm8753_dai = { |
| .name = "WM8753", |
| .stream_name = "WM8753 PCM", |
| .ops = &tegra_wm8753_ops, |
| .dai_fmt = SND_SOC_DAIFMT_I2S | |
| SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBS_CFS, |
| SND_SOC_DAILINK_REG(pcm), |
| }; |
| |
| static struct snd_soc_card snd_soc_tegra_wm8753 = { |
| .name = "tegra-wm8753", |
| .owner = THIS_MODULE, |
| .dai_link = &tegra_wm8753_dai, |
| .num_links = 1, |
| |
| .dapm_widgets = tegra_wm8753_dapm_widgets, |
| .num_dapm_widgets = ARRAY_SIZE(tegra_wm8753_dapm_widgets), |
| .fully_routed = true, |
| }; |
| |
| static int tegra_wm8753_driver_probe(struct platform_device *pdev) |
| { |
| struct device_node *np = pdev->dev.of_node; |
| struct snd_soc_card *card = &snd_soc_tegra_wm8753; |
| struct tegra_wm8753 *machine; |
| int ret; |
| |
| machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8753), |
| GFP_KERNEL); |
| if (!machine) |
| return -ENOMEM; |
| |
| card->dev = &pdev->dev; |
| 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_wm8753_dai.codecs->of_node = of_parse_phandle(np, |
| "nvidia,audio-codec", 0); |
| if (!tegra_wm8753_dai.codecs->of_node) { |
| dev_err(&pdev->dev, |
| "Property 'nvidia,audio-codec' missing or invalid\n"); |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| tegra_wm8753_dai.cpus->of_node = of_parse_phandle(np, |
| "nvidia,i2s-controller", 0); |
| if (!tegra_wm8753_dai.cpus->of_node) { |
| dev_err(&pdev->dev, |
| "Property 'nvidia,i2s-controller' missing or invalid\n"); |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| tegra_wm8753_dai.platforms->of_node = tegra_wm8753_dai.cpus->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_wm8753_driver_remove(struct platform_device *pdev) |
| { |
| struct snd_soc_card *card = platform_get_drvdata(pdev); |
| struct tegra_wm8753 *machine = snd_soc_card_get_drvdata(card); |
| |
| snd_soc_unregister_card(card); |
| |
| tegra_asoc_utils_fini(&machine->util_data); |
| |
| return 0; |
| } |
| |
| static const struct of_device_id tegra_wm8753_of_match[] = { |
| { .compatible = "nvidia,tegra-audio-wm8753", }, |
| {}, |
| }; |
| |
| static struct platform_driver tegra_wm8753_driver = { |
| .driver = { |
| .name = DRV_NAME, |
| .pm = &snd_soc_pm_ops, |
| .of_match_table = tegra_wm8753_of_match, |
| }, |
| .probe = tegra_wm8753_driver_probe, |
| .remove = tegra_wm8753_driver_remove, |
| }; |
| module_platform_driver(tegra_wm8753_driver); |
| |
| MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>"); |
| MODULE_DESCRIPTION("Tegra+WM8753 machine ASoC driver"); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("platform:" DRV_NAME); |
| MODULE_DEVICE_TABLE(of, tegra_wm8753_of_match); |