recipes/linux/linux-omap-pm/0001-ASoC-Add-support-for-OMAP3-EVM.patch

   1 From c1dad0b6b434300ae64c902d11611c54c513ea10 Mon Sep 17 00:00:00 2001
   2 From: Anuj Aggarwal <anuj.aggarwal@ti.com>
   3 Date: Fri, 21 Nov 2008 17:41:03 +0530
   4 Subject: [PATCH] ASoC: Add support for OMAP3 EVM
   5
   6 This patch adds ALSA SoC support for OMAP3 EVM using TWL4030 audio codec.
   7
   8 Signed-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
  16 diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
  17 index 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
  35 diff --git a/sound/soc/omap/Makefile b/sound/soc/omap/Makefile
  36 index 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
  51 diff --git a/sound/soc/omap/omap3evm.c b/sound/soc/omap/omap3evm.c
  52 new file mode 100644
  53 index 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 --
 205 1.5.6.5
 206