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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
51struct tegra_wm8753 {
52 struct tegra_asoc_utils_data util_data;
53};
54
55static 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 = codec_dai->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
95static struct snd_soc_ops tegra_wm8753_ops = {
96 .hw_params = tegra_wm8753_hw_params,
97};
98
99static 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
104static 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
114static 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
125static __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_of_node = of_parse_phandle(
161 pdev->dev.of_node, "nvidia,i2s-controller", 0);
162 if (!tegra_wm8753_dai.cpu_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_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
185err_fini_utils:
186 tegra_asoc_utils_fini(&machine->util_data);
187err:
188 return ret;
189}
190
191static 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
203static const struct of_device_id tegra_wm8753_of_match[] __devinitconst = {
204 { .compatible = "nvidia,tegra-audio-wm8753", },
205 {},
206};
207
208static 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};
218module_platform_driver(tegra_wm8753_driver);
219
220MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
221MODULE_DESCRIPTION("Tegra+WM8753 machine ASoC driver");
222MODULE_LICENSE("GPL");
223MODULE_ALIAS("platform:" DRV_NAME);
224MODULE_DEVICE_TABLE(of, tegra_wm8753_of_match);
225
