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-rw-r--r--meta/recipes-kernel/linux/linux-omap-2.6.29/0001-ASoC-Add-support-for-OMAP3-EVM.patch206
1 files changed, 206 insertions, 0 deletions
diff --git a/meta/recipes-kernel/linux/linux-omap-2.6.29/0001-ASoC-Add-support-for-OMAP3-EVM.patch b/meta/recipes-kernel/linux/linux-omap-2.6.29/0001-ASoC-Add-support-for-OMAP3-EVM.patch
new file mode 100644
index 0000000000..a76e96e444
--- /dev/null
+++ b/meta/recipes-kernel/linux/linux-omap-2.6.29/0001-ASoC-Add-support-for-OMAP3-EVM.patch
@@ -0,0 +1,206 @@
1From c1dad0b6b434300ae64c902d11611c54c513ea10 Mon Sep 17 00:00:00 2001
2From: Anuj Aggarwal <anuj.aggarwal@ti.com>
3Date: Fri, 21 Nov 2008 17:41:03 +0530
4Subject: [PATCH] ASoC: Add support for OMAP3 EVM
5
6This patch adds ALSA SoC support for OMAP3 EVM using TWL4030 audio codec.
7
8Signed-off-by: Anuj Aggarwal <anuj.aggarwal@ti.com>
9---
10 sound/soc/omap/Kconfig | 8 +++
11 sound/soc/omap/Makefile | 3 +-
12 sound/soc/omap/omap3evm.c | 147 +++++++++++++++++++++++++++++++++++++++++++++
13 3 files changed, 157 insertions(+), 1 deletions(-)
14 create mode 100644 sound/soc/omap/omap3evm.c
15
16diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
17index 0daeee4..deb6ba9 100644
18--- a/sound/soc/omap/Kconfig
19+++ b/sound/soc/omap/Kconfig
20@@ -22,6 +22,14 @@ config SND_OMAP_SOC_OMAP3_BEAGLE
21 help
22 Say Y if you want to add support for SoC audio on the Beagleboard.
23
24+config SND_OMAP_SOC_OMAP3EVM
25+ tristate "SoC Audio support for OMAP3EVM board"
26+ depends on SND_OMAP_SOC && MACH_OMAP3EVM
27+ select SND_OMAP_SOC_MCBSP
28+ select SND_SOC_TWL4030
29+ help
30+ Say Y if you want to add support for SoC audio on the omap3evm board.
31+
32 config SND_OMAP_SOC_OSK5912
33 tristate "SoC Audio support for omap osk5912"
34 depends on SND_OMAP_SOC && MACH_OMAP_OSK
35diff --git a/sound/soc/omap/Makefile b/sound/soc/omap/Makefile
36index 4bae404..ef31c25 100644
37--- a/sound/soc/omap/Makefile
38+++ b/sound/soc/omap/Makefile
39@@ -10,9 +10,10 @@ snd-soc-n810-objs := n810.o
40 snd-soc-omap3beagle-objs := omap3beagle.o
41 snd-soc-osk5912-objs := osk5912.o
42 snd-soc-overo-objs := overo.o
43+snd-soc-omap3evm-objs := omap3evm.o
44
45 obj-$(CONFIG_SND_OMAP_SOC_N810) += snd-soc-n810.o
46 obj-$(CONFIG_SND_OMAP_SOC_OMAP3_BEAGLE) += snd-soc-omap3beagle.o
47 obj-$(CONFIG_SND_OMAP_SOC_OSK5912) += snd-soc-osk5912.o
48 obj-$(CONFIG_SND_OMAP_SOC_OVERO) += snd-soc-overo.o
49-
50+obj-$(CONFIG_MACH_OMAP3EVM) += snd-soc-omap3evm.o
51diff --git a/sound/soc/omap/omap3evm.c b/sound/soc/omap/omap3evm.c
52new file mode 100644
53index 0000000..570af55
54--- /dev/null
55+++ b/sound/soc/omap/omap3evm.c
56@@ -0,0 +1,147 @@
57+/*
58+ * omap3evm.c -- ALSA SoC support for OMAP3 EVM
59+ *
60+ * Author: Anuj Aggarwal <anuj.aggarwal@ti.com>
61+ *
62+ * Based on sound/soc/omap/beagle.c by Steve Sakoman
63+ *
64+ * Copyright (C) 2008 Texas Instruments, Incorporated
65+ *
66+ * This program is free software; you can redistribute it and/or modify it
67+ * under the terms of the GNU General Public License as published by the
68+ * Free Software Foundation version 2.
69+ *
70+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
71+ * whether express or implied; without even the implied warranty of
72+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
73+ * General Public License for more details.
74+ */
75+
76+#include <linux/clk.h>
77+#include <linux/platform_device.h>
78+#include <sound/core.h>
79+#include <sound/pcm.h>
80+#include <sound/soc.h>
81+#include <sound/soc-dapm.h>
82+
83+#include <asm/mach-types.h>
84+#include <mach/hardware.h>
85+#include <mach/gpio.h>
86+#include <mach/mcbsp.h>
87+
88+#include "omap-mcbsp.h"
89+#include "omap-pcm.h"
90+#include "../codecs/twl4030.h"
91+
92+static int omap3evm_hw_params(struct snd_pcm_substream *substream,
93+ struct snd_pcm_hw_params *params)
94+{
95+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
96+ struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
97+ struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
98+ int ret;
99+
100+ /* Set codec DAI configuration */
101+ ret = snd_soc_dai_set_fmt(codec_dai,
102+ SND_SOC_DAIFMT_I2S |
103+ SND_SOC_DAIFMT_NB_NF |
104+ SND_SOC_DAIFMT_CBM_CFM);
105+ if (ret < 0) {
106+ printk(KERN_ERR "can't set codec DAI configuration\n");
107+ return ret;
108+ }
109+
110+ /* Set cpu DAI configuration */
111+ ret = snd_soc_dai_set_fmt(cpu_dai,
112+ SND_SOC_DAIFMT_I2S |
113+ SND_SOC_DAIFMT_NB_NF |
114+ SND_SOC_DAIFMT_CBM_CFM);
115+ if (ret < 0) {
116+ printk(KERN_ERR "can't set cpu DAI configuration\n");
117+ return ret;
118+ }
119+
120+ /* Set the codec system clock for DAC and ADC */
121+ ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
122+ SND_SOC_CLOCK_IN);
123+ if (ret < 0) {
124+ printk(KERN_ERR "can't set codec system clock\n");
125+ return ret;
126+ }
127+
128+ return 0;
129+}
130+
131+static struct snd_soc_ops omap3evm_ops = {
132+ .hw_params = omap3evm_hw_params,
133+};
134+
135+/* Digital audio interface glue - connects codec <--> CPU */
136+static struct snd_soc_dai_link omap3evm_dai = {
137+ .name = "TWL4030",
138+ .stream_name = "TWL4030",
139+ .cpu_dai = &omap_mcbsp_dai[0],
140+ .codec_dai = &twl4030_dai,
141+ .ops = &omap3evm_ops,
142+};
143+
144+/* Audio machine driver */
145+static struct snd_soc_machine snd_soc_machine_omap3evm = {
146+ .name = "omap3evm",
147+ .dai_link = &omap3evm_dai,
148+ .num_links = 1,
149+};
150+
151+/* Audio subsystem */
152+static struct snd_soc_device omap3evm_snd_devdata = {
153+ .machine = &snd_soc_machine_omap3evm,
154+ .platform = &omap_soc_platform,
155+ .codec_dev = &soc_codec_dev_twl4030,
156+};
157+
158+static struct platform_device *omap3evm_snd_device;
159+
160+static int __init omap3evm_soc_init(void)
161+{
162+ int ret;
163+
164+ if (!machine_is_omap3evm()) {
165+ pr_debug("Not OMAP3 EVM!\n");
166+ return -ENODEV;
167+ }
168+ pr_info("OMAP3 EVM SoC init\n");
169+
170+ omap3evm_snd_device = platform_device_alloc("soc-audio", -1);
171+ if (!omap3evm_snd_device) {
172+ printk(KERN_ERR "Platform device allocation failed\n");
173+ return -ENOMEM;
174+ }
175+
176+ platform_set_drvdata(omap3evm_snd_device, &omap3evm_snd_devdata);
177+ omap3evm_snd_devdata.dev = &omap3evm_snd_device->dev;
178+ *(unsigned int *)omap3evm_dai.cpu_dai->private_data = 1; /* McBSP2 */
179+
180+ ret = platform_device_add(omap3evm_snd_device);
181+ if (ret)
182+ goto err1;
183+
184+ return 0;
185+
186+err1:
187+ printk(KERN_ERR "Unable to add platform device\n");
188+ platform_device_put(omap3evm_snd_device);
189+
190+ return ret;
191+}
192+
193+static void __exit omap3evm_soc_exit(void)
194+{
195+ platform_device_unregister(omap3evm_snd_device);
196+}
197+
198+module_init(omap3evm_soc_init);
199+module_exit(omap3evm_soc_exit);
200+
201+MODULE_AUTHOR("Anuj Aggarwal <anuj.aggarwal@ti.com>");
202+MODULE_DESCRIPTION("ALSA SoC OMAP3 EVM");
203+MODULE_LICENSE("GPL");
204--
2051.5.6.5
206
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