Date:2010-08-01 21:34:54 (8 years 9 months ago)
Author:Lars C.
Commit:3765c7b1061af1e9a4e6f6a93a6b81e5627e0ae7
Message:Add N516 sound SoC board driver

Files: sound/soc/jz4740/Kconfig (1 diff)
sound/soc/jz4740/Makefile (1 diff)
sound/soc/jz4740/n516.c (1 diff)

Change Details

sound/soc/jz4740/Kconfig
2121    help
2222      Say Y if you want to add support for ASoC audio on the Qi LB60 board
2323      a.k.a Qi Ben NanoNote.
24
25config SND_JZ4740_SOC_N516
26    tristate "SoC Audio support for Hanvon N516 eBook reader"
27    depends on SND_JZ4740_SOC && JZ4740_N516
28    select SND_JZ4740_SOC_I2S
29    select SND_SOC_JZCODEC
30    help
31      Say Y if you want to enable support for SoC audio on the Hanvon N516.
sound/soc/jz4740/Makefile
99
1010# Jz4740 Machine Support
1111snd-soc-qi-lb60-objs := qi_lb60.o
12snd-soc-n516-objs := n516.o
1213
1314obj-$(CONFIG_SND_JZ4740_SOC_QI_LB60) += snd-soc-qi-lb60.o
15obj-$(CONFIG_SND_JZ4740_SOC_N516) += snd-soc-n516.o
sound/soc/jz4740/n516.c
1/*
2 * Copyright (C) 2009, Yauhen Kharuzhy <jekhor@gmail.com>
3 * OpenInkpot project
4 * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * You should have received a copy of the GNU General Public License along
11 * with this program; if not, write to the Free Software Foundation, Inc.,
12 * 675 Mass Ave, Cambridge, MA 02139, USA.
13 *
14 */
15
16#include <linux/module.h>
17#include <linux/interrupt.h>
18#include <linux/platform_device.h>
19#include <sound/core.h>
20#include <sound/pcm.h>
21#include <sound/soc.h>
22#include <sound/soc-dapm.h>
23#include <sound/jack.h>
24#include <linux/gpio.h>
25#include <linux/workqueue.h>
26
27#include "../codecs/jzcodec.h"
28#include "jz4740-pcm.h"
29#include "jz4740-i2s.h"
30
31#include <asm/mach-jz4740/board-n516.h>
32
33enum {
34    N516_SPEAKER_AUTO = 0,
35    N516_SPEAKER_OFF = 1,
36    N516_SPEAKER_ON = 2,
37};
38
39static int n516_speaker_mode;
40static struct snd_soc_codec *n516_codec;
41static struct work_struct n516_headphone_work;
42
43static void n516_ext_control(void)
44{
45    if (!n516_codec)
46        return;
47
48    switch (n516_speaker_mode) {
49    case N516_SPEAKER_ON:
50        snd_soc_dapm_enable_pin(n516_codec, "Speaker");
51        break;
52    case N516_SPEAKER_OFF:
53        snd_soc_dapm_disable_pin(n516_codec, "Speaker");
54        break;
55    case N516_SPEAKER_AUTO:
56        if (snd_soc_dapm_get_pin_status(n516_codec, "Headphone"))
57            snd_soc_dapm_disable_pin(n516_codec, "Speaker");
58        else
59            snd_soc_dapm_enable_pin(n516_codec, "Speaker");
60        break;
61    default:
62        break;
63    }
64
65    /* signal a DAPM event */
66    snd_soc_dapm_sync(n516_codec);
67}
68
69static int n516_speaker_event(struct snd_soc_dapm_widget *widget,
70                 struct snd_kcontrol *ctrl, int event)
71{
72    int on = !SND_SOC_DAPM_EVENT_OFF(event);
73
74    gpio_set_value(GPIO_SPEAKER_ENABLE, on);
75
76    return 0;
77}
78
79static void n516_headphone_event_work(struct work_struct *work)
80{
81    n516_ext_control();
82}
83
84static int n516_headphone_event(struct snd_soc_dapm_widget *widget,
85                 struct snd_kcontrol *ctrl, int event)
86{
87    /* We can't call soc_dapm_sync from a event handler */
88    if (event & (SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD))
89        schedule_work(&n516_headphone_work);
90    return 0;
91}
92
93static const struct snd_soc_dapm_widget n516_widgets[] = {
94    SND_SOC_DAPM_SPK("Speaker", n516_speaker_event),
95    SND_SOC_DAPM_HP("Headphone", n516_headphone_event),
96    SND_SOC_DAPM_MIC("Mic", NULL),
97};
98
99static const struct snd_soc_dapm_route n516_routes[] = {
100    {"Mic", NULL, "MIC"},
101    {"Speaker", NULL, "LOUT"},
102    {"Speaker", NULL, "ROUT"},
103    {"Headphone", NULL, "LOUT"},
104    {"Headphone", NULL, "ROUT"},
105};
106
107static const char *n516_speaker_modes[] = {"Auto", "Off", "On"};
108static const struct soc_enum n516_speaker_mode_enum =
109    SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(n516_speaker_modes), n516_speaker_modes);
110
111static int n516_get_speaker_mode(struct snd_kcontrol *kcontrol,
112    struct snd_ctl_elem_value *ucontrol)
113{
114    ucontrol->value.integer.value[0] = n516_speaker_mode;
115    return 0;
116}
117
118static int n516_set_speaker_mode(struct snd_kcontrol *kcontrol,
119    struct snd_ctl_elem_value *ucontrol)
120{
121    if (n516_speaker_mode == ucontrol->value.integer.value[0])
122        return 0;
123
124    n516_speaker_mode = ucontrol->value.integer.value[0];
125    n516_ext_control();
126    return 1;
127}
128
129static const struct snd_kcontrol_new n516_controls[] = {
130    SOC_ENUM_EXT("Speaker Function", n516_speaker_mode_enum,
131        n516_get_speaker_mode, n516_set_speaker_mode),
132};
133
134#define N516_DAIFMT (SND_SOC_DAIFMT_I2S | \
135            SND_SOC_DAIFMT_NB_NF | \
136            SND_SOC_DAIFMT_CBM_CFM)
137
138static int n516_codec_init(struct snd_soc_codec *codec)
139{
140    int ret;
141    struct snd_soc_dai *cpu_dai = codec->socdev->card->dai_link->cpu_dai;
142    struct snd_soc_dai *codec_dai = codec->socdev->card->dai_link->codec_dai;
143
144    n516_codec = codec;
145
146    snd_soc_dapm_nc_pin(codec, "LIN");
147    snd_soc_dapm_nc_pin(codec, "RIN");
148
149    ret = snd_soc_dai_set_fmt(codec_dai, N516_DAIFMT);
150    if (ret < 0) {
151        dev_err(codec->dev, "Failed to set codec dai format: %d\n", ret);
152        return ret;
153    }
154
155    ret = snd_soc_dai_set_fmt(cpu_dai, N516_DAIFMT);
156    if (ret < 0) {
157        dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
158        return ret;
159    }
160
161    ret = snd_soc_dai_set_sysclk(codec_dai, JZCODEC_SYSCLK, 111,
162        SND_SOC_CLOCK_IN);
163    if (ret < 0) {
164        dev_err(codec->dev, "Failed to set codec dai sysclk: %d\n", ret);
165        return ret;
166    }
167
168    ret = snd_soc_add_controls(codec, n516_controls,
169        ARRAY_SIZE(n516_controls));
170    if (ret) {
171        dev_err(codec->dev, "Failed to add controls: %d\n", ret);
172        return ret;
173    }
174
175
176    ret = snd_soc_dapm_new_controls(codec, n516_widgets,
177        ARRAY_SIZE(n516_widgets));
178    if (ret) {
179        dev_err(codec->dev, "Failed to add dapm controls: %d\n", ret);
180        return ret;
181    }
182
183    ret = snd_soc_dapm_add_routes(codec, n516_routes, ARRAY_SIZE(n516_routes));
184    if (ret) {
185        dev_err(codec->dev, "Failed to add dapm routes: %d\n", ret);
186        return ret;
187    }
188
189    snd_soc_dapm_sync(codec);
190
191    return 0;
192}
193
194static struct snd_soc_dai_link n516_dai = {
195    .name = "jz-codec",
196    .stream_name = "JZCODEC",
197    .cpu_dai = &jz4740_i2s_dai,
198    .codec_dai = &jz_codec_dai,
199    .init = n516_codec_init,
200};
201
202static struct snd_soc_card n516_card = {
203    .name = "N516",
204    .dai_link = &n516_dai,
205    .num_links = 1,
206    .platform = &jz4740_soc_platform,
207};
208
209static struct snd_soc_device n516_snd_devdata = {
210    .card = &n516_card,
211    .codec_dev = &soc_codec_dev_jzcodec,
212};
213
214static struct platform_device *n516_snd_device;
215
216static struct snd_soc_jack n516_hp_jack;
217
218static struct snd_soc_jack_pin n516_hp_pin = {
219    .pin = "Headphone",
220    .mask = SND_JACK_HEADPHONE,
221};
222
223static struct snd_soc_jack_gpio n516_hp_gpio = {
224    .gpio = GPIO_HPHONE_DETECT,
225    .name = "Headphone detect",
226    .report = SND_JACK_HEADPHONE,
227    .debounce_time = 100,
228};
229
230static int __init n516_add_headphone_jack(void)
231{
232    int ret;
233
234    ret = snd_soc_jack_new(&n516_card, "Headphone jack",
235        SND_JACK_HEADPHONE, &n516_hp_jack);
236    if (ret)
237        return ret;
238
239    ret = snd_soc_jack_add_pins(&n516_hp_jack, 1, &n516_hp_pin);
240    if (ret)
241        return ret;
242
243    ret = snd_soc_jack_add_gpios(&n516_hp_jack, 1, &n516_hp_gpio);
244
245    return ret;
246}
247
248static int __init n516_init(void)
249{
250    int ret;
251
252    n516_snd_device = platform_device_alloc("soc-audio", -1);
253
254    if (!n516_snd_device)
255        return -ENOMEM;
256
257    ret = gpio_request(GPIO_SPEAKER_ENABLE, "Speaker enable");
258    if (ret) {
259        pr_err("n516 snd: Failed to request SPEAKER_ENABLE GPIO(%d): %d\n",
260                GPIO_SPEAKER_ENABLE, ret);
261        goto err_device_put;
262    }
263
264    gpio_direction_output(GPIO_SPEAKER_ENABLE, 0);
265    INIT_WORK(&n516_headphone_work, n516_headphone_event_work);
266
267    platform_set_drvdata(n516_snd_device, &n516_snd_devdata);
268    n516_snd_devdata.dev = &n516_snd_device->dev;
269    ret = platform_device_add(n516_snd_device);
270    if (ret) {
271        pr_err("n516 snd: Failed to add snd soc device: %d\n", ret);
272        goto err_unset_pdata;
273    }
274
275    ret = n516_add_headphone_jack();
276    /* We can live without it, so just print a warning */
277    if (ret)
278        pr_warning("n516 snd: Failed to initalise headphone jack: %d\n", ret);
279
280    return 0;
281
282err_unset_pdata:
283    platform_set_drvdata(n516_snd_device, NULL);
284/*err_gpio_free_speaker:*/
285    gpio_free(GPIO_SPEAKER_ENABLE);
286err_device_put:
287    platform_device_put(n516_snd_device);
288
289    return ret;
290}
291module_init(n516_init);
292
293static void __exit n516_exit(void)
294{
295    snd_soc_jack_free_gpios(&n516_hp_jack, 1, &n516_hp_gpio);
296    gpio_free(GPIO_SPEAKER_ENABLE);
297    platform_device_unregister(n516_snd_device);
298}
299module_exit(n516_exit);
300
301MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
302MODULE_DESCRIPTION("ALSA SoC N516 Audio support");
303MODULE_LICENSE("GPL v2");

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