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1 | /* |
2 | * tegra_sgtl5000.c - Tegra machine ASoC driver for boards using SGTL5000 codec | |
3 | * | |
4 | * Author: Marcel Ziswiler <marcel@ziswiler.com> | |
5 | * | |
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. | |
9 | * | |
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 | |
13 | * more details. | |
14 | * | |
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/>. | |
17 | * | |
18 | * Based on code copyright/by: | |
19 | * | |
20 | * Copyright (C) 2010-2012 - NVIDIA, Inc. | |
21 | * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd. | |
22 | * Copyright 2007 Wolfson Microelectronics PLC. | |
23 | */ | |
24 | ||
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> | |
30 | ||
31 | #include <sound/core.h> | |
32 | #include <sound/pcm.h> | |
33 | #include <sound/pcm_params.h> | |
34 | #include <sound/soc.h> | |
35 | ||
36 | #include "../codecs/sgtl5000.h" | |
37 | ||
38 | #include "tegra_asoc_utils.h" | |
39 | ||
40 | #define DRV_NAME "tegra-snd-sgtl5000" | |
41 | ||
42 | struct tegra_sgtl5000 { | |
43 | struct tegra_asoc_utils_data util_data; | |
44 | }; | |
45 | ||
46 | static int tegra_sgtl5000_hw_params(struct snd_pcm_substream *substream, | |
47 | struct snd_pcm_hw_params *params) | |
48 | { | |
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); | |
53 | int srate, mclk; | |
54 | int err; | |
55 | ||
56 | srate = params_rate(params); | |
57 | switch (srate) { | |
58 | case 11025: | |
59 | case 22050: | |
60 | case 44100: | |
61 | case 88200: | |
62 | mclk = 11289600; | |
63 | break; | |
64 | default: | |
65 | mclk = 12288000; | |
66 | break; | |
67 | } | |
68 | ||
69 | err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk); | |
70 | if (err < 0) { | |
71 | dev_err(card->dev, "Can't configure clocks\n"); | |
72 | return err; | |
73 | } | |
74 | ||
75 | err = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk, | |
76 | SND_SOC_CLOCK_IN); | |
77 | if (err < 0) { | |
78 | dev_err(card->dev, "codec_dai clock not set\n"); | |
79 | return err; | |
80 | } | |
81 | ||
82 | return 0; | |
83 | } | |
84 | ||
85 | static struct snd_soc_ops tegra_sgtl5000_ops = { | |
86 | .hw_params = tegra_sgtl5000_hw_params, | |
87 | }; | |
88 | ||
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), | |
93 | }; | |
94 | ||
95 | static struct snd_soc_dai_link tegra_sgtl5000_dai = { | |
96 | .name = "sgtl5000", | |
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, | |
102 | }; | |
103 | ||
104 | static struct snd_soc_card snd_soc_tegra_sgtl5000 = { | |
105 | .name = "tegra-sgtl5000", | |
106 | .owner = THIS_MODULE, | |
107 | .dai_link = &tegra_sgtl5000_dai, | |
108 | .num_links = 1, | |
109 | .dapm_widgets = tegra_sgtl5000_dapm_widgets, | |
110 | .num_dapm_widgets = ARRAY_SIZE(tegra_sgtl5000_dapm_widgets), | |
111 | .fully_routed = true, | |
112 | }; | |
113 | ||
114 | static int tegra_sgtl5000_driver_probe(struct platform_device *pdev) | |
115 | { | |
116 | struct device_node *np = pdev->dev.of_node; | |
117 | struct snd_soc_card *card = &snd_soc_tegra_sgtl5000; | |
118 | struct tegra_sgtl5000 *machine; | |
119 | int ret; | |
120 | ||
121 | machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_sgtl5000), | |
122 | GFP_KERNEL); | |
123 | if (!machine) { | |
124 | dev_err(&pdev->dev, "Can't allocate tegra_sgtl5000 struct\n"); | |
125 | return -ENOMEM; | |
126 | } | |
127 | ||
128 | card->dev = &pdev->dev; | |
129 | platform_set_drvdata(pdev, card); | |
130 | snd_soc_card_set_drvdata(card, machine); | |
131 | ||
132 | ret = snd_soc_of_parse_card_name(card, "nvidia,model"); | |
133 | if (ret) | |
134 | goto err; | |
135 | ||
136 | ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing"); | |
137 | if (ret) | |
138 | goto err; | |
139 | ||
140 | tegra_sgtl5000_dai.codec_of_node = of_parse_phandle(np, | |
141 | "nvidia,audio-codec", 0); | |
142 | if (!tegra_sgtl5000_dai.codec_of_node) { | |
143 | dev_err(&pdev->dev, | |
144 | "Property 'nvidia,audio-codec' missing or invalid\n"); | |
145 | ret = -EINVAL; | |
146 | goto err; | |
147 | } | |
148 | ||
149 | tegra_sgtl5000_dai.cpu_of_node = of_parse_phandle(np, | |
150 | "nvidia,i2s-controller", 0); | |
151 | if (!tegra_sgtl5000_dai.cpu_of_node) { | |
152 | dev_err(&pdev->dev, | |
153 | "Property 'nvidia,i2s-controller' missing/invalid\n"); | |
154 | ret = -EINVAL; | |
155 | goto err; | |
156 | } | |
157 | ||
158 | tegra_sgtl5000_dai.platform_of_node = tegra_sgtl5000_dai.cpu_of_node; | |
159 | ||
160 | ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev); | |
161 | if (ret) | |
162 | goto err; | |
163 | ||
164 | ret = snd_soc_register_card(card); | |
165 | if (ret) { | |
166 | dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", | |
167 | ret); | |
168 | goto err_fini_utils; | |
169 | } | |
170 | ||
171 | return 0; | |
172 | ||
173 | err_fini_utils: | |
174 | tegra_asoc_utils_fini(&machine->util_data); | |
175 | err: | |
176 | return ret; | |
177 | } | |
178 | ||
179 | static int tegra_sgtl5000_driver_remove(struct platform_device *pdev) | |
180 | { | |
181 | struct snd_soc_card *card = platform_get_drvdata(pdev); | |
182 | struct tegra_sgtl5000 *machine = snd_soc_card_get_drvdata(card); | |
183 | int ret; | |
184 | ||
185 | ret = snd_soc_unregister_card(card); | |
186 | ||
187 | tegra_asoc_utils_fini(&machine->util_data); | |
188 | ||
189 | return ret; | |
190 | } | |
191 | ||
192 | static const struct of_device_id tegra_sgtl5000_of_match[] = { | |
193 | { .compatible = "nvidia,tegra-audio-sgtl5000", }, | |
194 | { /* sentinel */ }, | |
195 | }; | |
196 | ||
197 | static struct platform_driver tegra_sgtl5000_driver = { | |
198 | .driver = { | |
199 | .name = DRV_NAME, | |
200 | .pm = &snd_soc_pm_ops, | |
201 | .of_match_table = tegra_sgtl5000_of_match, | |
202 | }, | |
203 | .probe = tegra_sgtl5000_driver_probe, | |
204 | .remove = tegra_sgtl5000_driver_remove, | |
205 | }; | |
206 | module_platform_driver(tegra_sgtl5000_driver); | |
207 | ||
208 | MODULE_AUTHOR("Marcel Ziswiler <marcel@ziswiler.com>"); | |
209 | MODULE_DESCRIPTION("Tegra SGTL5000 machine ASoC driver"); | |
210 | MODULE_LICENSE("GPL v2"); | |
211 | MODULE_ALIAS("platform:" DRV_NAME); | |
212 | MODULE_DEVICE_TABLE(of, tegra_sgtl5000_of_match); |