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d8259ca5 SW |
1 | /* |
2 | * tegra_wm8753.c - Tegra machine ASoC driver for boards using WM8753 codec. | |
3 | * | |
4 | * Author: Stephen Warren <swarren@nvidia.com> | |
5 | * Copyright (C) 2010-2012 - NVIDIA, Inc. | |
6 | * | |
7 | * Based on code copyright/by: | |
8 | * | |
9 | * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd. | |
10 | * | |
11 | * Copyright 2007 Wolfson Microelectronics PLC. | |
12 | * Author: Graeme Gregory | |
13 | * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or | |
16 | * modify it under the terms of the GNU General Public License | |
17 | * version 2 as published by the Free Software Foundation. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, but | |
20 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
22 | * General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with this program; if not, write to the Free Software | |
26 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
27 | * 02110-1301 USA | |
28 | * | |
29 | */ | |
30 | ||
d8259ca5 SW |
31 | #include <linux/module.h> |
32 | #include <linux/platform_device.h> | |
33 | #include <linux/slab.h> | |
34 | #include <linux/gpio.h> | |
35 | #include <linux/of_gpio.h> | |
36 | ||
37 | #include <sound/core.h> | |
38 | #include <sound/jack.h> | |
39 | #include <sound/pcm.h> | |
40 | #include <sound/pcm_params.h> | |
41 | #include <sound/soc.h> | |
42 | ||
43 | #include "../codecs/wm8753.h" | |
44 | ||
45 | #include "tegra_asoc_utils.h" | |
46 | ||
47 | #define DRV_NAME "tegra-snd-wm8753" | |
48 | ||
49 | struct tegra_wm8753 { | |
50 | struct tegra_asoc_utils_data util_data; | |
51 | }; | |
52 | ||
53 | static int tegra_wm8753_hw_params(struct snd_pcm_substream *substream, | |
54 | struct snd_pcm_hw_params *params) | |
55 | { | |
56 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
57 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
093c4e5c | 58 | struct snd_soc_card *card = rtd->card; |
d8259ca5 SW |
59 | struct tegra_wm8753 *machine = snd_soc_card_get_drvdata(card); |
60 | int srate, mclk; | |
61 | int err; | |
62 | ||
63 | srate = params_rate(params); | |
64 | switch (srate) { | |
65 | case 11025: | |
66 | case 22050: | |
67 | case 44100: | |
68 | case 88200: | |
69 | mclk = 11289600; | |
70 | break; | |
71 | default: | |
72 | mclk = 12288000; | |
73 | break; | |
74 | } | |
75 | ||
76 | err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk); | |
77 | if (err < 0) { | |
78 | dev_err(card->dev, "Can't configure clocks\n"); | |
79 | return err; | |
80 | } | |
81 | ||
82 | err = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, mclk, | |
83 | SND_SOC_CLOCK_IN); | |
84 | if (err < 0) { | |
85 | dev_err(card->dev, "codec_dai clock not set\n"); | |
86 | return err; | |
87 | } | |
88 | ||
89 | return 0; | |
90 | } | |
91 | ||
8a7a282b | 92 | static const struct snd_soc_ops tegra_wm8753_ops = { |
d8259ca5 SW |
93 | .hw_params = tegra_wm8753_hw_params, |
94 | }; | |
95 | ||
96 | static const struct snd_soc_dapm_widget tegra_wm8753_dapm_widgets[] = { | |
97 | SND_SOC_DAPM_HP("Headphone Jack", NULL), | |
98 | SND_SOC_DAPM_MIC("Mic Jack", NULL), | |
99 | }; | |
100 | ||
101 | static struct snd_soc_dai_link tegra_wm8753_dai = { | |
102 | .name = "WM8753", | |
103 | .stream_name = "WM8753 PCM", | |
104 | .codec_dai_name = "wm8753-hifi", | |
105 | .ops = &tegra_wm8753_ops, | |
106 | .dai_fmt = SND_SOC_DAIFMT_I2S | | |
107 | SND_SOC_DAIFMT_NB_NF | | |
108 | SND_SOC_DAIFMT_CBS_CFS, | |
109 | }; | |
110 | ||
111 | static struct snd_soc_card snd_soc_tegra_wm8753 = { | |
112 | .name = "tegra-wm8753", | |
113 | .owner = THIS_MODULE, | |
114 | .dai_link = &tegra_wm8753_dai, | |
115 | .num_links = 1, | |
116 | ||
117 | .dapm_widgets = tegra_wm8753_dapm_widgets, | |
118 | .num_dapm_widgets = ARRAY_SIZE(tegra_wm8753_dapm_widgets), | |
119 | .fully_routed = true, | |
120 | }; | |
121 | ||
4652a0d0 | 122 | static int tegra_wm8753_driver_probe(struct platform_device *pdev) |
d8259ca5 | 123 | { |
bddd7d02 | 124 | struct device_node *np = pdev->dev.of_node; |
d8259ca5 SW |
125 | struct snd_soc_card *card = &snd_soc_tegra_wm8753; |
126 | struct tegra_wm8753 *machine; | |
127 | int ret; | |
128 | ||
129 | machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8753), | |
130 | GFP_KERNEL); | |
131 | if (!machine) { | |
132 | dev_err(&pdev->dev, "Can't allocate tegra_wm8753 struct\n"); | |
bddd7d02 | 133 | return -ENOMEM; |
d8259ca5 SW |
134 | } |
135 | ||
136 | card->dev = &pdev->dev; | |
137 | platform_set_drvdata(pdev, card); | |
138 | snd_soc_card_set_drvdata(card, machine); | |
139 | ||
140 | ret = snd_soc_of_parse_card_name(card, "nvidia,model"); | |
141 | if (ret) | |
142 | goto err; | |
143 | ||
144 | ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing"); | |
145 | if (ret) | |
146 | goto err; | |
147 | ||
bddd7d02 SW |
148 | tegra_wm8753_dai.codec_of_node = of_parse_phandle(np, |
149 | "nvidia,audio-codec", 0); | |
d8259ca5 SW |
150 | if (!tegra_wm8753_dai.codec_of_node) { |
151 | dev_err(&pdev->dev, | |
152 | "Property 'nvidia,audio-codec' missing or invalid\n"); | |
153 | ret = -EINVAL; | |
154 | goto err; | |
155 | } | |
156 | ||
bddd7d02 SW |
157 | tegra_wm8753_dai.cpu_of_node = of_parse_phandle(np, |
158 | "nvidia,i2s-controller", 0); | |
bc92657a | 159 | if (!tegra_wm8753_dai.cpu_of_node) { |
d8259ca5 SW |
160 | dev_err(&pdev->dev, |
161 | "Property 'nvidia,i2s-controller' missing or invalid\n"); | |
162 | ret = -EINVAL; | |
163 | goto err; | |
164 | } | |
165 | ||
bddd7d02 | 166 | tegra_wm8753_dai.platform_of_node = tegra_wm8753_dai.cpu_of_node; |
d8259ca5 SW |
167 | |
168 | ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev); | |
169 | if (ret) | |
170 | goto err; | |
171 | ||
172 | ret = snd_soc_register_card(card); | |
173 | if (ret) { | |
174 | dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", | |
175 | ret); | |
176 | goto err_fini_utils; | |
177 | } | |
178 | ||
179 | return 0; | |
180 | ||
181 | err_fini_utils: | |
182 | tegra_asoc_utils_fini(&machine->util_data); | |
183 | err: | |
184 | return ret; | |
185 | } | |
186 | ||
4652a0d0 | 187 | static int tegra_wm8753_driver_remove(struct platform_device *pdev) |
d8259ca5 SW |
188 | { |
189 | struct snd_soc_card *card = platform_get_drvdata(pdev); | |
190 | struct tegra_wm8753 *machine = snd_soc_card_get_drvdata(card); | |
191 | ||
192 | snd_soc_unregister_card(card); | |
193 | ||
194 | tegra_asoc_utils_fini(&machine->util_data); | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
f6e65744 | 199 | static const struct of_device_id tegra_wm8753_of_match[] = { |
d8259ca5 SW |
200 | { .compatible = "nvidia,tegra-audio-wm8753", }, |
201 | {}, | |
202 | }; | |
203 | ||
204 | static struct platform_driver tegra_wm8753_driver = { | |
205 | .driver = { | |
206 | .name = DRV_NAME, | |
d8259ca5 SW |
207 | .pm = &snd_soc_pm_ops, |
208 | .of_match_table = tegra_wm8753_of_match, | |
209 | }, | |
210 | .probe = tegra_wm8753_driver_probe, | |
4652a0d0 | 211 | .remove = tegra_wm8753_driver_remove, |
d8259ca5 SW |
212 | }; |
213 | module_platform_driver(tegra_wm8753_driver); | |
214 | ||
215 | MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>"); | |
216 | MODULE_DESCRIPTION("Tegra+WM8753 machine ASoC driver"); | |
217 | MODULE_LICENSE("GPL"); | |
218 | MODULE_ALIAS("platform:" DRV_NAME); | |
219 | MODULE_DEVICE_TABLE(of, tegra_wm8753_of_match); |