2 * tegra_sgtl5000.c - Tegra machine ASoC driver for boards using SGTL5000 codec
4 * Author: Marcel Ziswiler <marcel@ziswiler.com>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 * Based on code copyright/by:
20 * Copyright (C) 2010-2012 - NVIDIA, Inc.
21 * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
22 * Copyright 2007 Wolfson Microelectronics PLC.
25 #include <linux/module.h>
26 #include <linux/platform_device.h>
27 #include <linux/slab.h>
28 #include <linux/gpio.h>
29 #include <linux/of_gpio.h>
31 #include <sound/core.h>
32 #include <sound/pcm.h>
33 #include <sound/pcm_params.h>
34 #include <sound/soc.h>
36 #include "../codecs/sgtl5000.h"
38 #include "tegra_asoc_utils.h"
40 #define DRV_NAME "tegra-snd-sgtl5000"
42 struct tegra_sgtl5000 {
43 struct tegra_asoc_utils_data util_data;
46 static int tegra_sgtl5000_hw_params(struct snd_pcm_substream *substream,
47 struct snd_pcm_hw_params *params)
49 struct snd_soc_pcm_runtime *rtd = substream->private_data;
50 struct snd_soc_dai *codec_dai = rtd->codec_dai;
51 struct snd_soc_card *card = rtd->card;
52 struct tegra_sgtl5000 *machine = snd_soc_card_get_drvdata(card);
56 srate = params_rate(params);
69 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
71 dev_err(card->dev, "Can't configure clocks\n");
75 err = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk,
78 dev_err(card->dev, "codec_dai clock not set\n");
85 static struct snd_soc_ops tegra_sgtl5000_ops = {
86 .hw_params = tegra_sgtl5000_hw_params,
89 static const struct snd_soc_dapm_widget tegra_sgtl5000_dapm_widgets[] = {
90 SND_SOC_DAPM_HP("Headphone Jack", NULL),
91 SND_SOC_DAPM_LINE("Line In Jack", NULL),
92 SND_SOC_DAPM_MIC("Mic Jack", NULL),
95 static struct snd_soc_dai_link tegra_sgtl5000_dai = {
97 .stream_name = "HiFi",
98 .codec_dai_name = "sgtl5000",
99 .ops = &tegra_sgtl5000_ops,
100 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
101 SND_SOC_DAIFMT_CBS_CFS,
104 static struct snd_soc_card snd_soc_tegra_sgtl5000 = {
105 .name = "tegra-sgtl5000",
106 .driver_name = "tegra",
107 .owner = THIS_MODULE,
108 .dai_link = &tegra_sgtl5000_dai,
110 .dapm_widgets = tegra_sgtl5000_dapm_widgets,
111 .num_dapm_widgets = ARRAY_SIZE(tegra_sgtl5000_dapm_widgets),
112 .fully_routed = true,
115 static int tegra_sgtl5000_driver_probe(struct platform_device *pdev)
117 struct device_node *np = pdev->dev.of_node;
118 struct snd_soc_card *card = &snd_soc_tegra_sgtl5000;
119 struct tegra_sgtl5000 *machine;
122 machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_sgtl5000),
125 dev_err(&pdev->dev, "Can't allocate tegra_sgtl5000 struct\n");
129 card->dev = &pdev->dev;
130 platform_set_drvdata(pdev, card);
131 snd_soc_card_set_drvdata(card, machine);
133 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
137 ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
141 tegra_sgtl5000_dai.codec_of_node = of_parse_phandle(np,
142 "nvidia,audio-codec", 0);
143 if (!tegra_sgtl5000_dai.codec_of_node) {
145 "Property 'nvidia,audio-codec' missing or invalid\n");
150 tegra_sgtl5000_dai.cpu_of_node = of_parse_phandle(np,
151 "nvidia,i2s-controller", 0);
152 if (!tegra_sgtl5000_dai.cpu_of_node) {
154 "Property 'nvidia,i2s-controller' missing/invalid\n");
156 goto err_put_codec_of_node;
159 tegra_sgtl5000_dai.platform_of_node = tegra_sgtl5000_dai.cpu_of_node;
161 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
163 goto err_put_cpu_of_node;
165 ret = snd_soc_register_card(card);
167 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
175 tegra_asoc_utils_fini(&machine->util_data);
177 of_node_put(tegra_sgtl5000_dai.cpu_of_node);
178 tegra_sgtl5000_dai.cpu_of_node = NULL;
179 tegra_sgtl5000_dai.platform_of_node = NULL;
180 err_put_codec_of_node:
181 of_node_put(tegra_sgtl5000_dai.codec_of_node);
182 tegra_sgtl5000_dai.codec_of_node = NULL;
187 static int tegra_sgtl5000_driver_remove(struct platform_device *pdev)
189 struct snd_soc_card *card = platform_get_drvdata(pdev);
190 struct tegra_sgtl5000 *machine = snd_soc_card_get_drvdata(card);
193 ret = snd_soc_unregister_card(card);
195 tegra_asoc_utils_fini(&machine->util_data);
197 of_node_put(tegra_sgtl5000_dai.cpu_of_node);
198 tegra_sgtl5000_dai.cpu_of_node = NULL;
199 tegra_sgtl5000_dai.platform_of_node = NULL;
200 of_node_put(tegra_sgtl5000_dai.codec_of_node);
201 tegra_sgtl5000_dai.codec_of_node = NULL;
206 static const struct of_device_id tegra_sgtl5000_of_match[] = {
207 { .compatible = "nvidia,tegra-audio-sgtl5000", },
211 static struct platform_driver tegra_sgtl5000_driver = {
214 .pm = &snd_soc_pm_ops,
215 .of_match_table = tegra_sgtl5000_of_match,
217 .probe = tegra_sgtl5000_driver_probe,
218 .remove = tegra_sgtl5000_driver_remove,
220 module_platform_driver(tegra_sgtl5000_driver);
222 MODULE_AUTHOR("Marcel Ziswiler <marcel@ziswiler.com>");
223 MODULE_DESCRIPTION("Tegra SGTL5000 machine ASoC driver");
224 MODULE_LICENSE("GPL v2");
225 MODULE_ALIAS("platform:" DRV_NAME);
226 MODULE_DEVICE_TABLE(of, tegra_sgtl5000_of_match);