1 /*
2 * linux/sound/soc/pxa/palm27x.c
3 *
4 * SoC Audio driver for Palm T|X, T5 and LifeDrive
5 *
6 * based on tosa.c
7 *
8 * Copyright (C) 2008 Marek Vasut <marek.vasut@gmail.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 *
14 */
15
16 #include <linux/module.h>
17 #include <linux/moduleparam.h>
18 #include <linux/device.h>
19 #include <linux/gpio.h>
20 #include <linux/interrupt.h>
21 #include <linux/irq.h>
22
23 #include <sound/core.h>
24 #include <sound/pcm.h>
25 #include <sound/soc.h>
26 #include <sound/soc-dapm.h>
27
28 #include <asm/mach-types.h>
29 #include <mach/audio.h>
30 #include <mach/palmasoc.h>
31
32 #include "../codecs/wm9712.h"
33 #include "pxa2xx-pcm.h"
34 #include "pxa2xx-ac97.h"
35
36 static int palm27x_jack_func = 1;
37 static int palm27x_spk_func = 1;
38 static int palm27x_ep_gpio = -1;
39
40 static void palm27x_ext_control(struct snd_soc_codec *codec)
41 {
42 if (!palm27x_spk_func)
43 snd_soc_dapm_enable_pin(codec, "Speaker");
44 else
45 snd_soc_dapm_disable_pin(codec, "Speaker");
46
47 if (!palm27x_jack_func)
48 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
49 else
50 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
51
52 snd_soc_dapm_sync(codec);
53 }
54
55 static int palm27x_startup(struct snd_pcm_substream *substream)
56 {
57 struct snd_soc_pcm_runtime *rtd = substream->private_data;
58 struct snd_soc_codec *codec = rtd->socdev->card->codec;
59
60 /* check the jack status at stream startup */
61 palm27x_ext_control(codec);
62 return 0;
63 }
64
65 static struct snd_soc_ops palm27x_ops = {
66 .startup = palm27x_startup,
67 };
68
69 static irqreturn_t palm27x_interrupt(int irq, void *v)
70 {
71 palm27x_spk_func = gpio_get_value(palm27x_ep_gpio);
72 palm27x_jack_func = !palm27x_spk_func;
73 return IRQ_HANDLED;
74 }
75
76 static int palm27x_get_jack(struct snd_kcontrol *kcontrol,
77 struct snd_ctl_elem_value *ucontrol)
78 {
79 ucontrol->value.integer.value[0] = palm27x_jack_func;
80 return 0;
81 }
82
83 static int palm27x_set_jack(struct snd_kcontrol *kcontrol,
84 struct snd_ctl_elem_value *ucontrol)
85 {
86 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
87
88 if (palm27x_jack_func == ucontrol->value.integer.value[0])
89 return 0;
90
91 palm27x_jack_func = ucontrol->value.integer.value[0];
92 palm27x_ext_control(codec);
93 return 1;
94 }
95
96 static int palm27x_get_spk(struct snd_kcontrol *kcontrol,
97 struct snd_ctl_elem_value *ucontrol)
98 {
99 ucontrol->value.integer.value[0] = palm27x_spk_func;
100 return 0;
101 }
102
103 static int palm27x_set_spk(struct snd_kcontrol *kcontrol,
104 struct snd_ctl_elem_value *ucontrol)
105 {
106 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
107
108 if (palm27x_spk_func == ucontrol->value.integer.value[0])
109 return 0;
110
111 palm27x_spk_func = ucontrol->value.integer.value[0];
112 palm27x_ext_control(codec);
113 return 1;
114 }
115
116 /* PalmTX machine dapm widgets */
117 static const struct snd_soc_dapm_widget palm27x_dapm_widgets[] = {
118 SND_SOC_DAPM_HP("Headphone Jack", NULL),
119 SND_SOC_DAPM_SPK("Speaker", NULL),
120 };
121
122 /* PalmTX audio map */
123 static const struct snd_soc_dapm_route audio_map[] = {
124 /* headphone connected to HPOUTL, HPOUTR */
125 {"Headphone Jack", NULL, "HPOUTL"},
126 {"Headphone Jack", NULL, "HPOUTR"},
127
128 /* ext speaker connected to ROUT2, LOUT2 */
129 {"Speaker", NULL, "LOUT2"},
130 {"Speaker", NULL, "ROUT2"},
131 };
132
133 static const char *jack_function[] = {"Headphone", "Off"};
134 static const char *spk_function[] = {"On", "Off"};
135 static const struct soc_enum palm27x_enum[] = {
136 SOC_ENUM_SINGLE_EXT(2, jack_function),
137 SOC_ENUM_SINGLE_EXT(2, spk_function),
138 };
139
140 static const struct snd_kcontrol_new palm27x_controls[] = {
141 SOC_ENUM_EXT("Jack Function", palm27x_enum[0], palm27x_get_jack,
142 palm27x_set_jack),
143 SOC_ENUM_EXT("Speaker Function", palm27x_enum[1], palm27x_get_spk,
144 palm27x_set_spk),
145 };
146
147 static int palm27x_ac97_init(struct snd_soc_codec *codec)
148 {
149 int err;
150
151 snd_soc_dapm_nc_pin(codec, "OUT3");
152 snd_soc_dapm_nc_pin(codec, "MONOOUT");
153
154 /* add palm27x specific controls */
155 err = snd_soc_add_controls(codec, palm27x_controls,
156 ARRAY_SIZE(palm27x_controls));
157 if (err < 0)
158 return err;
159
160 /* add palm27x specific widgets */
161 snd_soc_dapm_new_controls(codec, palm27x_dapm_widgets,
162 ARRAY_SIZE(palm27x_dapm_widgets));
163
164 /* set up palm27x specific audio path audio_map */
165 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
166
167 snd_soc_dapm_sync(codec);
168 return 0;
169 }
170
171 static struct snd_soc_dai_link palm27x_dai[] = {
172 {
173 .name = "AC97 HiFi",
174 .stream_name = "AC97 HiFi",
175 .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
176 .codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],
177 .init = palm27x_ac97_init,
178 .ops = &palm27x_ops,
179 },
180 {
181 .name = "AC97 Aux",
182 .stream_name = "AC97 Aux",
183 .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
184 .codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
185 .ops = &palm27x_ops,
186 },
187 };
188
189 static struct snd_soc_card palm27x_asoc = {
190 .name = "Palm/PXA27x",
191 .platform = &pxa2xx_soc_platform,
192 .dai_link = palm27x_dai,
193 .num_links = ARRAY_SIZE(palm27x_dai),
194 };
195
196 static struct snd_soc_device palm27x_snd_devdata = {
197 .card = &palm27x_asoc,
198 .codec_dev = &soc_codec_dev_wm9712,
199 };
200
201 static struct platform_device *palm27x_snd_device;
202
203 static int palm27x_asoc_probe(struct platform_device *pdev)
204 {
205 int ret;
206
207 if (!(machine_is_palmtx() || machine_is_palmt5() ||
208 machine_is_palmld() || machine_is_palmte2()))
209 return -ENODEV;
210
211 if (pdev->dev.platform_data)
212 palm27x_ep_gpio = ((struct palm27x_asoc_info *)
213 (pdev->dev.platform_data))->jack_gpio;
214
215 ret = gpio_request(palm27x_ep_gpio, "Headphone Jack");
216 if (ret)
217 return ret;
218 ret = gpio_direction_input(palm27x_ep_gpio);
219 if (ret)
220 goto err_alloc;
221
222 if (request_irq(gpio_to_irq(palm27x_ep_gpio), palm27x_interrupt,
223 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
224 "Headphone jack", NULL))
225 goto err_alloc;
226
227 palm27x_snd_device = platform_device_alloc("soc-audio", -1);
228 if (!palm27x_snd_device) {
229 ret = -ENOMEM;
230 goto err_dev;
231 }
232
233 platform_set_drvdata(palm27x_snd_device, &palm27x_snd_devdata);
234 palm27x_snd_devdata.dev = &palm27x_snd_device->dev;
235 ret = platform_device_add(palm27x_snd_device);
236
237 if (ret != 0)
238 goto put_device;
239
240 return 0;
241
242 put_device:
243 platform_device_put(palm27x_snd_device);
244 err_dev:
245 free_irq(gpio_to_irq(palm27x_ep_gpio), NULL);
246 err_alloc:
247 gpio_free(palm27x_ep_gpio);
248
249 return ret;
250 }
251
252 static int __devexit palm27x_asoc_remove(struct platform_device *pdev)
253 {
254 free_irq(gpio_to_irq(palm27x_ep_gpio), NULL);
255 gpio_free(palm27x_ep_gpio);
256 platform_device_unregister(palm27x_snd_device);
257 return 0;
258 }
259
260 static struct platform_driver palm27x_wm9712_driver = {
261 .probe = palm27x_asoc_probe,
262 .remove = __devexit_p(palm27x_asoc_remove),
263 .driver = {
264 .name = "palm27x-asoc",
265 .owner = THIS_MODULE,
266 },
267 };
268
269 static int __init palm27x_asoc_init(void)
270 {
271 return platform_driver_register(&palm27x_wm9712_driver);
272 }
273
274 static void __exit palm27x_asoc_exit(void)
275 {
276 platform_driver_unregister(&palm27x_wm9712_driver);
277 }
278
279 module_init(palm27x_asoc_init);
280 module_exit(palm27x_asoc_exit);
281
282 /* Module information */
283 MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
284 MODULE_DESCRIPTION("ALSA SoC Palm T|X, T5 and LifeDrive");
285 MODULE_LICENSE("GPL");
286
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