Root/target/linux/xburst/patches-3.0/0007-Add-N526-sound-SoC-board-driver.patch

1From 19d5c8c334a79951d927a1b6eb25bf6a896c9ab5 Mon Sep 17 00:00:00 2001
2From: Lars-Peter Clausen <lars@metafoo.de>
3Date: Sat, 24 Apr 2010 12:38:41 +0200
4Subject: [PATCH 07/32] Add N526 sound SoC board driver
5
6---
7 sound/soc/jz4740/Kconfig | 8 ++
8 sound/soc/jz4740/Makefile | 2 +
9 sound/soc/jz4740/n526.c | 169 +++++++++++++++++++++++++++++++++++++++++++++
10 3 files changed, 179 insertions(+), 0 deletions(-)
11 create mode 100644 sound/soc/jz4740/n526.c
12
13diff --git a/sound/soc/jz4740/Kconfig b/sound/soc/jz4740/Kconfig
14index 08530ca..c222dcb 100644
15--- a/sound/soc/jz4740/Kconfig
16+++ b/sound/soc/jz4740/Kconfig
17@@ -29,3 +29,11 @@ config SND_JZ4740_SOC_N516
18     select SND_SOC_JZCODEC
19     help
20       Say Y if you want to enable support for SoC audio on the Hanvon N516.
21+
22+config SND_JZ4740_SOC_N526
23+ tristate "SoC Audio support for Hanvon N526 eBook reader"
24+ depends on SND_JZ4740_SOC && JZ4740_N526
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 N526.
29diff --git a/sound/soc/jz4740/Makefile b/sound/soc/jz4740/Makefile
30index b64d912..e7952d3 100644
31--- a/sound/soc/jz4740/Makefile
32+++ b/sound/soc/jz4740/Makefile
33@@ -10,6 +10,8 @@ obj-$(CONFIG_SND_JZ4740_SOC_I2S) += snd-soc-jz4740-i2s.o
34 # Jz4740 Machine Support
35 snd-soc-qi-lb60-objs := qi_lb60.o
36 snd-soc-n516-objs := n516.o
37+snd-soc-n526-objs := n526.o
38 
39 obj-$(CONFIG_SND_JZ4740_SOC_QI_LB60) += snd-soc-qi-lb60.o
40 obj-$(CONFIG_SND_JZ4740_SOC_N516) += snd-soc-n516.o
41+obj-$(CONFIG_SND_JZ4740_SOC_N526) += snd-soc-n526.o
42diff --git a/sound/soc/jz4740/n526.c b/sound/soc/jz4740/n526.c
43new file mode 100644
44index 0000000..2283904
45--- /dev/null
46+++ b/sound/soc/jz4740/n526.c
47@@ -0,0 +1,169 @@
48+/*
49+ * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
50+ *
51+ * This program is free software; you can redistribute it and/or modify
52+ * it under the terms of the GNU General Public License version 2 as
53+ * published by the Free Software Foundation.
54+ *
55+ * You should have received a copy of the GNU General Public License along
56+ * with this program; if not, write to the Free Software Foundation, Inc.,
57+ * 675 Mass Ave, Cambridge, MA 02139, USA.
58+ *
59+ */
60+
61+#include <linux/module.h>
62+#include <linux/moduleparam.h>
63+#include <linux/timer.h>
64+#include <linux/interrupt.h>
65+#include <linux/platform_device.h>
66+#include <sound/core.h>
67+#include <sound/pcm.h>
68+#include <sound/soc.h>
69+#include <sound/soc-dapm.h>
70+#include <linux/gpio.h>
71+
72+#include "../codecs/jzcodec.h"
73+#include "jz4740-pcm.h"
74+#include "jz4740-i2s.h"
75+
76+#define N526_AMP_EN_GPIO JZ_GPIO_PORTD(4)
77+
78+static int n526_spk_event(struct snd_soc_dapm_widget *widget,
79+ struct snd_kcontrol *ctrl, int event)
80+{
81+ gpio_set_value(N526_AMP_EN_GPIO, !SND_SOC_DAPM_EVENT_OFF(event));
82+ return 0;
83+}
84+
85+static const struct snd_soc_dapm_widget n526_widgets[] = {
86+ SND_SOC_DAPM_SPK("Speaker", n526_spk_event),
87+ SND_SOC_DAPM_HP("Headphone", NULL),
88+ SND_SOC_DAPM_MIC("Mic", NULL),
89+};
90+
91+static const struct snd_soc_dapm_route n526_routes[] = {
92+ {"Mic", NULL, "MIC"},
93+ {"Speaker", NULL, "LOUT"},
94+ {"Speaker", NULL, "ROUT"},
95+ {"Headphone", NULL, "LOUT"},
96+ {"Headphone", NULL, "ROUT"},
97+};
98+
99+static const struct snd_kcontrol_new n526_controls[] = {
100+ SOC_DAPM_PIN_SWITCH("Speaker"),
101+};
102+
103+#define N526_DAIFMT (SND_SOC_DAIFMT_I2S | \
104+ SND_SOC_DAIFMT_NB_NF | \
105+ SND_SOC_DAIFMT_CBM_CFM)
106+
107+static int n526_codec_init(struct snd_soc_codec *codec)
108+{
109+ int ret;
110+ struct snd_soc_dai *cpu_dai = codec->socdev->card->dai_link->cpu_dai;
111+ struct snd_soc_dai *codec_dai = codec->socdev->card->dai_link->codec_dai;
112+
113+ snd_soc_dapm_nc_pin(codec, "LIN");
114+ snd_soc_dapm_nc_pin(codec, "RIN");
115+
116+ ret = snd_soc_dai_set_fmt(codec_dai, N526_DAIFMT);
117+ if (ret < 0) {
118+ dev_err(codec->dev, "Failed to set codec dai format: %d\n", ret);
119+ return ret;
120+ }
121+
122+ ret = snd_soc_dai_set_fmt(cpu_dai, N526_DAIFMT);
123+ if (ret < 0) {
124+ dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
125+ return ret;
126+ }
127+
128+ ret = snd_soc_dai_set_sysclk(codec_dai, JZCODEC_SYSCLK, 111,
129+ SND_SOC_CLOCK_IN);
130+ if (ret < 0) {
131+ dev_err(codec->dev, "Failed to set codec dai sysclk: %d\n", ret);
132+ return ret;
133+ }
134+
135+ snd_soc_dapm_new_controls(codec, n526_widgets, ARRAY_SIZE(n526_widgets));
136+
137+ snd_soc_add_controls(codec, n526_controls,
138+ ARRAY_SIZE(n526_controls));
139+
140+ snd_soc_dapm_add_routes(codec, n526_routes, ARRAY_SIZE(n526_routes));
141+
142+ snd_soc_dapm_sync(codec);
143+
144+ return 0;
145+}
146+
147+static struct snd_soc_dai_link n526_dai = {
148+ .name = "jz-codec",
149+ .stream_name = "JZCODEC",
150+ .cpu_dai = &jz4740_i2s_dai,
151+ .codec_dai = &jz_codec_dai,
152+ .init = n526_codec_init,
153+};
154+
155+static struct snd_soc_card n526 = {
156+ .name = "N526",
157+ .dai_link = &n526_dai,
158+ .num_links = 1,
159+ .platform = &jz4740_soc_platform,
160+};
161+
162+static struct snd_soc_device n526_snd_devdata = {
163+ .card = &n526,
164+ .codec_dev = &soc_codec_dev_jzcodec,
165+};
166+
167+static struct platform_device *n526_snd_device;
168+
169+static int __init n526_init(void)
170+{
171+ int ret;
172+
173+ n526_snd_device = platform_device_alloc("soc-audio", -1);
174+
175+ if (!n526_snd_device)
176+ return -ENOMEM;
177+
178+ ret = gpio_request(N526_AMP_EN_GPIO, "AMP");
179+ if (ret) {
180+ pr_err("n526 snd: Failed to request AMP GPIO(%d): %d\n",
181+ N526_AMP_EN_GPIO, ret);
182+ goto err_device_put;
183+ }
184+
185+ gpio_direction_output(JZ_GPIO_PORTD(4), 0);
186+
187+ platform_set_drvdata(n526_snd_device, &n526_snd_devdata);
188+ n526_snd_devdata.dev = &n526_snd_device->dev;
189+ ret = platform_device_add(n526_snd_device);
190+ if (ret) {
191+ pr_err("n526 snd: Failed to add snd soc device: %d\n", ret);
192+ goto err_unset_pdata;
193+ }
194+
195+ return 0;
196+
197+err_unset_pdata:
198+ platform_set_drvdata(n526_snd_device, NULL);
199+ gpio_free(N526_AMP_EN_GPIO);
200+err_device_put:
201+ platform_device_put(n526_snd_device);
202+
203+ return ret;
204+}
205+module_init(n526_init);
206+
207+static void __exit n526_exit(void)
208+{
209+ gpio_free(N526_AMP_EN_GPIO);
210+ platform_device_unregister(n526_snd_device);
211+}
212+module_exit(n526_exit);
213+
214+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
215+MODULE_DESCRIPTION("ALSA SoC N526 audio support");
216+MODULE_LICENSE("GPL v2");
217--
2181.7.4.1
219
220

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