Root/target/linux/xburst/patches-3.0/0005-Add-N516-sound-SoC-board-driver.patch

1From 523f9ca02b5c2c8b79f1d01fff03b1191a6aed6c Mon Sep 17 00:00:00 2001
2From: Lars-Peter Clausen <lars@metafoo.de>
3Date: Sun, 1 Aug 2010 21:34:54 +0200
4Subject: [PATCH 05/32] Add N516 sound SoC board driver
5
6---
7 sound/soc/jz4740/Kconfig | 8 ++
8 sound/soc/jz4740/Makefile | 2 +
9 sound/soc/jz4740/n516.c | 303 +++++++++++++++++++++++++++++++++++++++++++++
10 3 files changed, 313 insertions(+), 0 deletions(-)
11 create mode 100644 sound/soc/jz4740/n516.c
12
13diff --git a/sound/soc/jz4740/Kconfig b/sound/soc/jz4740/Kconfig
14index 5351cba..08530ca 100644
15--- a/sound/soc/jz4740/Kconfig
16+++ b/sound/soc/jz4740/Kconfig
17@@ -21,3 +21,11 @@ config SND_JZ4740_SOC_QI_LB60
18     help
19       Say Y if you want to add support for ASoC audio on the Qi LB60 board
20       a.k.a Qi Ben NanoNote.
21+
22+config SND_JZ4740_SOC_N516
23+ tristate "SoC Audio support for Hanvon N516 eBook reader"
24+ depends on SND_JZ4740_SOC && JZ4740_N516
25+ select SND_JZ4740_SOC_I2S
26+ select SND_SOC_JZCODEC
27+ help
28+ Say Y if you want to enable support for SoC audio on the Hanvon N516.
29diff --git a/sound/soc/jz4740/Makefile b/sound/soc/jz4740/Makefile
30index be873c1..b64d912 100644
31--- a/sound/soc/jz4740/Makefile
32+++ b/sound/soc/jz4740/Makefile
33@@ -9,5 +9,7 @@ obj-$(CONFIG_SND_JZ4740_SOC_I2S) += snd-soc-jz4740-i2s.o
34 
35 # Jz4740 Machine Support
36 snd-soc-qi-lb60-objs := qi_lb60.o
37+snd-soc-n516-objs := n516.o
38 
39 obj-$(CONFIG_SND_JZ4740_SOC_QI_LB60) += snd-soc-qi-lb60.o
40+obj-$(CONFIG_SND_JZ4740_SOC_N516) += snd-soc-n516.o
41diff --git a/sound/soc/jz4740/n516.c b/sound/soc/jz4740/n516.c
42new file mode 100644
43index 0000000..9cb51c2
44--- /dev/null
45+++ b/sound/soc/jz4740/n516.c
46@@ -0,0 +1,303 @@
47+/*
48+ * Copyright (C) 2009, Yauhen Kharuzhy <jekhor@gmail.com>
49+ * OpenInkpot project
50+ * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
51+ *
52+ * This program is free software; you can redistribute it and/or modify
53+ * it under the terms of the GNU General Public License version 2 as
54+ * published by the Free Software Foundation.
55+ *
56+ * You should have received a copy of the GNU General Public License along
57+ * with this program; if not, write to the Free Software Foundation, Inc.,
58+ * 675 Mass Ave, Cambridge, MA 02139, USA.
59+ *
60+ */
61+
62+#include <linux/module.h>
63+#include <linux/interrupt.h>
64+#include <linux/platform_device.h>
65+#include <sound/core.h>
66+#include <sound/pcm.h>
67+#include <sound/soc.h>
68+#include <sound/soc-dapm.h>
69+#include <sound/jack.h>
70+#include <linux/gpio.h>
71+#include <linux/workqueue.h>
72+
73+#include "../codecs/jzcodec.h"
74+#include "jz4740-pcm.h"
75+#include "jz4740-i2s.h"
76+
77+#include <asm/mach-jz4740/board-n516.h>
78+
79+enum {
80+ N516_SPEAKER_AUTO = 0,
81+ N516_SPEAKER_OFF = 1,
82+ N516_SPEAKER_ON = 2,
83+};
84+
85+static int n516_speaker_mode;
86+static struct snd_soc_codec *n516_codec;
87+static struct work_struct n516_headphone_work;
88+
89+static void n516_ext_control(void)
90+{
91+ if (!n516_codec)
92+ return;
93+
94+ switch (n516_speaker_mode) {
95+ case N516_SPEAKER_ON:
96+ snd_soc_dapm_enable_pin(n516_codec, "Speaker");
97+ break;
98+ case N516_SPEAKER_OFF:
99+ snd_soc_dapm_disable_pin(n516_codec, "Speaker");
100+ break;
101+ case N516_SPEAKER_AUTO:
102+ if (snd_soc_dapm_get_pin_status(n516_codec, "Headphone"))
103+ snd_soc_dapm_disable_pin(n516_codec, "Speaker");
104+ else
105+ snd_soc_dapm_enable_pin(n516_codec, "Speaker");
106+ break;
107+ default:
108+ break;
109+ }
110+
111+ /* signal a DAPM event */
112+ snd_soc_dapm_sync(n516_codec);
113+}
114+
115+static int n516_speaker_event(struct snd_soc_dapm_widget *widget,
116+ struct snd_kcontrol *ctrl, int event)
117+{
118+ int on = !SND_SOC_DAPM_EVENT_OFF(event);
119+
120+ gpio_set_value(GPIO_SPEAKER_ENABLE, on);
121+
122+ return 0;
123+}
124+
125+static void n516_headphone_event_work(struct work_struct *work)
126+{
127+ n516_ext_control();
128+}
129+
130+static int n516_headphone_event(struct snd_soc_dapm_widget *widget,
131+ struct snd_kcontrol *ctrl, int event)
132+{
133+ /* We can't call soc_dapm_sync from a event handler */
134+ if (event & (SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD))
135+ schedule_work(&n516_headphone_work);
136+ return 0;
137+}
138+
139+static const struct snd_soc_dapm_widget n516_widgets[] = {
140+ SND_SOC_DAPM_SPK("Speaker", n516_speaker_event),
141+ SND_SOC_DAPM_HP("Headphone", n516_headphone_event),
142+ SND_SOC_DAPM_MIC("Mic", NULL),
143+};
144+
145+static const struct snd_soc_dapm_route n516_routes[] = {
146+ {"Mic", NULL, "MIC"},
147+ {"Speaker", NULL, "LOUT"},
148+ {"Speaker", NULL, "ROUT"},
149+ {"Headphone", NULL, "LOUT"},
150+ {"Headphone", NULL, "ROUT"},
151+};
152+
153+static const char *n516_speaker_modes[] = {"Auto", "Off", "On"};
154+static const struct soc_enum n516_speaker_mode_enum =
155+ SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(n516_speaker_modes), n516_speaker_modes);
156+
157+static int n516_get_speaker_mode(struct snd_kcontrol *kcontrol,
158+ struct snd_ctl_elem_value *ucontrol)
159+{
160+ ucontrol->value.integer.value[0] = n516_speaker_mode;
161+ return 0;
162+}
163+
164+static int n516_set_speaker_mode(struct snd_kcontrol *kcontrol,
165+ struct snd_ctl_elem_value *ucontrol)
166+{
167+ if (n516_speaker_mode == ucontrol->value.integer.value[0])
168+ return 0;
169+
170+ n516_speaker_mode = ucontrol->value.integer.value[0];
171+ n516_ext_control();
172+ return 1;
173+}
174+
175+static const struct snd_kcontrol_new n516_controls[] = {
176+ SOC_ENUM_EXT("Speaker Function", n516_speaker_mode_enum,
177+ n516_get_speaker_mode, n516_set_speaker_mode),
178+};
179+
180+#define N516_DAIFMT (SND_SOC_DAIFMT_I2S | \
181+ SND_SOC_DAIFMT_NB_NF | \
182+ SND_SOC_DAIFMT_CBM_CFM)
183+
184+static int n516_codec_init(struct snd_soc_codec *codec)
185+{
186+ int ret;
187+ struct snd_soc_dai *cpu_dai = codec->socdev->card->dai_link->cpu_dai;
188+ struct snd_soc_dai *codec_dai = codec->socdev->card->dai_link->codec_dai;
189+
190+ n516_codec = codec;
191+
192+ snd_soc_dapm_nc_pin(codec, "LIN");
193+ snd_soc_dapm_nc_pin(codec, "RIN");
194+
195+ ret = snd_soc_dai_set_fmt(codec_dai, N516_DAIFMT);
196+ if (ret < 0) {
197+ dev_err(codec->dev, "Failed to set codec dai format: %d\n", ret);
198+ return ret;
199+ }
200+
201+ ret = snd_soc_dai_set_fmt(cpu_dai, N516_DAIFMT);
202+ if (ret < 0) {
203+ dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
204+ return ret;
205+ }
206+
207+ ret = snd_soc_dai_set_sysclk(codec_dai, JZCODEC_SYSCLK, 111,
208+ SND_SOC_CLOCK_IN);
209+ if (ret < 0) {
210+ dev_err(codec->dev, "Failed to set codec dai sysclk: %d\n", ret);
211+ return ret;
212+ }
213+
214+ ret = snd_soc_add_controls(codec, n516_controls,
215+ ARRAY_SIZE(n516_controls));
216+ if (ret) {
217+ dev_err(codec->dev, "Failed to add controls: %d\n", ret);
218+ return ret;
219+ }
220+
221+
222+ ret = snd_soc_dapm_new_controls(codec, n516_widgets,
223+ ARRAY_SIZE(n516_widgets));
224+ if (ret) {
225+ dev_err(codec->dev, "Failed to add dapm controls: %d\n", ret);
226+ return ret;
227+ }
228+
229+ ret = snd_soc_dapm_add_routes(codec, n516_routes, ARRAY_SIZE(n516_routes));
230+ if (ret) {
231+ dev_err(codec->dev, "Failed to add dapm routes: %d\n", ret);
232+ return ret;
233+ }
234+
235+ snd_soc_dapm_sync(codec);
236+
237+ return 0;
238+}
239+
240+static struct snd_soc_dai_link n516_dai = {
241+ .name = "jz-codec",
242+ .stream_name = "JZCODEC",
243+ .cpu_dai = &jz4740_i2s_dai,
244+ .codec_dai = &jz_codec_dai,
245+ .init = n516_codec_init,
246+};
247+
248+static struct snd_soc_card n516_card = {
249+ .name = "N516",
250+ .dai_link = &n516_dai,
251+ .num_links = 1,
252+ .platform = &jz4740_soc_platform,
253+};
254+
255+static struct snd_soc_device n516_snd_devdata = {
256+ .card = &n516_card,
257+ .codec_dev = &soc_codec_dev_jzcodec,
258+};
259+
260+static struct platform_device *n516_snd_device;
261+
262+static struct snd_soc_jack n516_hp_jack;
263+
264+static struct snd_soc_jack_pin n516_hp_pin = {
265+ .pin = "Headphone",
266+ .mask = SND_JACK_HEADPHONE,
267+};
268+
269+static struct snd_soc_jack_gpio n516_hp_gpio = {
270+ .gpio = GPIO_HPHONE_DETECT,
271+ .name = "Headphone detect",
272+ .report = SND_JACK_HEADPHONE,
273+ .debounce_time = 100,
274+};
275+
276+static int __init n516_add_headphone_jack(void)
277+{
278+ int ret;
279+
280+ ret = snd_soc_jack_new(&n516_card, "Headphone jack",
281+ SND_JACK_HEADPHONE, &n516_hp_jack);
282+ if (ret)
283+ return ret;
284+
285+ ret = snd_soc_jack_add_pins(&n516_hp_jack, 1, &n516_hp_pin);
286+ if (ret)
287+ return ret;
288+
289+ ret = snd_soc_jack_add_gpios(&n516_hp_jack, 1, &n516_hp_gpio);
290+
291+ return ret;
292+}
293+
294+static int __init n516_init(void)
295+{
296+ int ret;
297+
298+ n516_snd_device = platform_device_alloc("soc-audio", -1);
299+
300+ if (!n516_snd_device)
301+ return -ENOMEM;
302+
303+ ret = gpio_request(GPIO_SPEAKER_ENABLE, "Speaker enable");
304+ if (ret) {
305+ pr_err("n516 snd: Failed to request SPEAKER_ENABLE GPIO(%d): %d\n",
306+ GPIO_SPEAKER_ENABLE, ret);
307+ goto err_device_put;
308+ }
309+
310+ gpio_direction_output(GPIO_SPEAKER_ENABLE, 0);
311+ INIT_WORK(&n516_headphone_work, n516_headphone_event_work);
312+
313+ platform_set_drvdata(n516_snd_device, &n516_snd_devdata);
314+ n516_snd_devdata.dev = &n516_snd_device->dev;
315+ ret = platform_device_add(n516_snd_device);
316+ if (ret) {
317+ pr_err("n516 snd: Failed to add snd soc device: %d\n", ret);
318+ goto err_unset_pdata;
319+ }
320+
321+ ret = n516_add_headphone_jack();
322+ /* We can live without it, so just print a warning */
323+ if (ret)
324+ pr_warning("n516 snd: Failed to initalise headphone jack: %d\n", ret);
325+
326+ return 0;
327+
328+err_unset_pdata:
329+ platform_set_drvdata(n516_snd_device, NULL);
330+/*err_gpio_free_speaker:*/
331+ gpio_free(GPIO_SPEAKER_ENABLE);
332+err_device_put:
333+ platform_device_put(n516_snd_device);
334+
335+ return ret;
336+}
337+module_init(n516_init);
338+
339+static void __exit n516_exit(void)
340+{
341+ snd_soc_jack_free_gpios(&n516_hp_jack, 1, &n516_hp_gpio);
342+ gpio_free(GPIO_SPEAKER_ENABLE);
343+ platform_device_unregister(n516_snd_device);
344+}
345+module_exit(n516_exit);
346+
347+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
348+MODULE_DESCRIPTION("ALSA SoC N516 Audio support");
349+MODULE_LICENSE("GPL v2");
350--
3511.7.4.1
352
353

Archive Download this file

Branches:
backfire
history
master
release_2010-11-17
release_2010-12-14
release_2011-02-23
release_2011-05-28
release_2011-08-27
release_2011-11-13
release_2012-03-18
release_2012-04-09
release_2012-10-11
uclibc_nptl



interactive