Commit | Line | Data |
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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 | ||
31 | #include <asm/mach-types.h> | |
32 | ||
33 | #include <linux/module.h> | |
34 | #include <linux/platform_device.h> | |
35 | #include <linux/slab.h> | |
36 | #include <linux/gpio.h> | |
37 | #include <linux/of_gpio.h> | |
38 | ||
39 | #include <sound/core.h> | |
40 | #include <sound/jack.h> | |
41 | #include <sound/pcm.h> | |
42 | #include <sound/pcm_params.h> | |
43 | #include <sound/soc.h> | |
44 | ||
45 | #include "../codecs/wm8753.h" | |
46 | ||
47 | #include "tegra_asoc_utils.h" | |
48 | ||
49 | #define DRV_NAME "tegra-snd-wm8753" | |
50 | ||
51 | struct tegra_wm8753 { | |
52 | struct tegra_asoc_utils_data util_data; | |
53 | }; | |
54 | ||
55 | static int tegra_wm8753_hw_params(struct snd_pcm_substream *substream, | |
56 | struct snd_pcm_hw_params *params) | |
57 | { | |
58 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
59 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
60 | struct snd_soc_codec *codec = rtd->codec; | |
61 | struct snd_soc_card *card = codec->card; | |
62 | struct tegra_wm8753 *machine = snd_soc_card_get_drvdata(card); | |
63 | int srate, mclk; | |
64 | int err; | |
65 | ||
66 | srate = params_rate(params); | |
67 | switch (srate) { | |
68 | case 11025: | |
69 | case 22050: | |
70 | case 44100: | |
71 | case 88200: | |
72 | mclk = 11289600; | |
73 | break; | |
74 | default: | |
75 | mclk = 12288000; | |
76 | break; | |
77 | } | |
78 | ||
79 | err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk); | |
80 | if (err < 0) { | |
81 | dev_err(card->dev, "Can't configure clocks\n"); | |
82 | return err; | |
83 | } | |
84 | ||
85 | err = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, mclk, | |
86 | SND_SOC_CLOCK_IN); | |
87 | if (err < 0) { | |
88 | dev_err(card->dev, "codec_dai clock not set\n"); | |
89 | return err; | |
90 | } | |
91 | ||
92 | return 0; | |
93 | } | |
94 | ||
95 | static struct snd_soc_ops tegra_wm8753_ops = { | |
96 | .hw_params = tegra_wm8753_hw_params, | |
97 | }; | |
98 | ||
99 | static const struct snd_soc_dapm_widget tegra_wm8753_dapm_widgets[] = { | |
100 | SND_SOC_DAPM_HP("Headphone Jack", NULL), | |
101 | SND_SOC_DAPM_MIC("Mic Jack", NULL), | |
102 | }; | |
103 | ||
104 | static struct snd_soc_dai_link tegra_wm8753_dai = { | |
105 | .name = "WM8753", | |
106 | .stream_name = "WM8753 PCM", | |
107 | .codec_dai_name = "wm8753-hifi", | |
108 | .ops = &tegra_wm8753_ops, | |
109 | .dai_fmt = SND_SOC_DAIFMT_I2S | | |
110 | SND_SOC_DAIFMT_NB_NF | | |
111 | SND_SOC_DAIFMT_CBS_CFS, | |
112 | }; | |
113 | ||
114 | static struct snd_soc_card snd_soc_tegra_wm8753 = { | |
115 | .name = "tegra-wm8753", | |
116 | .owner = THIS_MODULE, | |
117 | .dai_link = &tegra_wm8753_dai, | |
118 | .num_links = 1, | |
119 | ||
120 | .dapm_widgets = tegra_wm8753_dapm_widgets, | |
121 | .num_dapm_widgets = ARRAY_SIZE(tegra_wm8753_dapm_widgets), | |
122 | .fully_routed = true, | |
123 | }; | |
124 | ||
125 | static __devinit int tegra_wm8753_driver_probe(struct platform_device *pdev) | |
126 | { | |
127 | struct snd_soc_card *card = &snd_soc_tegra_wm8753; | |
128 | struct tegra_wm8753 *machine; | |
129 | int ret; | |
130 | ||
131 | machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8753), | |
132 | GFP_KERNEL); | |
133 | if (!machine) { | |
134 | dev_err(&pdev->dev, "Can't allocate tegra_wm8753 struct\n"); | |
135 | ret = -ENOMEM; | |
136 | goto err; | |
137 | } | |
138 | ||
139 | card->dev = &pdev->dev; | |
140 | platform_set_drvdata(pdev, card); | |
141 | snd_soc_card_set_drvdata(card, machine); | |
142 | ||
143 | ret = snd_soc_of_parse_card_name(card, "nvidia,model"); | |
144 | if (ret) | |
145 | goto err; | |
146 | ||
147 | ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing"); | |
148 | if (ret) | |
149 | goto err; | |
150 | ||
151 | tegra_wm8753_dai.codec_of_node = of_parse_phandle( | |
152 | pdev->dev.of_node, "nvidia,audio-codec", 0); | |
153 | if (!tegra_wm8753_dai.codec_of_node) { | |
154 | dev_err(&pdev->dev, | |
155 | "Property 'nvidia,audio-codec' missing or invalid\n"); | |
156 | ret = -EINVAL; | |
157 | goto err; | |
158 | } | |
159 | ||
160 | tegra_wm8753_dai.cpu_dai_of_node = of_parse_phandle( | |
161 | pdev->dev.of_node, "nvidia,i2s-controller", 0); | |
162 | if (!tegra_wm8753_dai.cpu_dai_of_node) { | |
163 | dev_err(&pdev->dev, | |
164 | "Property 'nvidia,i2s-controller' missing or invalid\n"); | |
165 | ret = -EINVAL; | |
166 | goto err; | |
167 | } | |
168 | ||
169 | tegra_wm8753_dai.platform_of_node = | |
170 | tegra_wm8753_dai.cpu_dai_of_node; | |
171 | ||
172 | ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev); | |
173 | if (ret) | |
174 | goto err; | |
175 | ||
176 | ret = snd_soc_register_card(card); | |
177 | if (ret) { | |
178 | dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", | |
179 | ret); | |
180 | goto err_fini_utils; | |
181 | } | |
182 | ||
183 | return 0; | |
184 | ||
185 | err_fini_utils: | |
186 | tegra_asoc_utils_fini(&machine->util_data); | |
187 | err: | |
188 | return ret; | |
189 | } | |
190 | ||
191 | static int __devexit tegra_wm8753_driver_remove(struct platform_device *pdev) | |
192 | { | |
193 | struct snd_soc_card *card = platform_get_drvdata(pdev); | |
194 | struct tegra_wm8753 *machine = snd_soc_card_get_drvdata(card); | |
195 | ||
196 | snd_soc_unregister_card(card); | |
197 | ||
198 | tegra_asoc_utils_fini(&machine->util_data); | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
203 | static const struct of_device_id tegra_wm8753_of_match[] __devinitconst = { | |
204 | { .compatible = "nvidia,tegra-audio-wm8753", }, | |
205 | {}, | |
206 | }; | |
207 | ||
208 | static struct platform_driver tegra_wm8753_driver = { | |
209 | .driver = { | |
210 | .name = DRV_NAME, | |
211 | .owner = THIS_MODULE, | |
212 | .pm = &snd_soc_pm_ops, | |
213 | .of_match_table = tegra_wm8753_of_match, | |
214 | }, | |
215 | .probe = tegra_wm8753_driver_probe, | |
216 | .remove = __devexit_p(tegra_wm8753_driver_remove), | |
217 | }; | |
218 | module_platform_driver(tegra_wm8753_driver); | |
219 | ||
220 | MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>"); | |
221 | MODULE_DESCRIPTION("Tegra+WM8753 machine ASoC driver"); | |
222 | MODULE_LICENSE("GPL"); | |
223 | MODULE_ALIAS("platform:" DRV_NAME); | |
224 | MODULE_DEVICE_TABLE(of, tegra_wm8753_of_match); |