Anuj Aggarwal | 14610ce | 2009-05-14 13:59:19 +0530 | [diff] [blame] | 1 | /* |
| 2 | * omap3evm.c -- ALSA SoC support for OMAP3 EVM |
| 3 | * |
| 4 | * Author: Anuj Aggarwal <anuj.aggarwal@ti.com> |
| 5 | * |
| 6 | * Based on sound/soc/omap/beagle.c by Steve Sakoman |
| 7 | * |
| 8 | * Copyright (C) 2008 Texas Instruments, Incorporated |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify it |
| 11 | * under the terms of the GNU General Public License as published by the |
| 12 | * Free Software Foundation version 2. |
| 13 | * |
| 14 | * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind, |
| 15 | * whether express or implied; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * General Public License for more details. |
| 18 | */ |
| 19 | |
| 20 | #include <linux/clk.h> |
| 21 | #include <linux/platform_device.h> |
Paul Gortmaker | da155d5 | 2011-07-15 12:38:28 -0400 | [diff] [blame] | 22 | #include <linux/module.h> |
Anuj Aggarwal | 14610ce | 2009-05-14 13:59:19 +0530 | [diff] [blame] | 23 | #include <sound/core.h> |
| 24 | #include <sound/pcm.h> |
| 25 | #include <sound/soc.h> |
Anuj Aggarwal | 14610ce | 2009-05-14 13:59:19 +0530 | [diff] [blame] | 26 | |
| 27 | #include <asm/mach-types.h> |
| 28 | #include <mach/hardware.h> |
| 29 | #include <mach/gpio.h> |
Tony Lindgren | ce491cf | 2009-10-20 09:40:47 -0700 | [diff] [blame] | 30 | #include <plat/mcbsp.h> |
Anuj Aggarwal | 14610ce | 2009-05-14 13:59:19 +0530 | [diff] [blame] | 31 | |
| 32 | #include "omap-mcbsp.h" |
| 33 | #include "omap-pcm.h" |
Anuj Aggarwal | 14610ce | 2009-05-14 13:59:19 +0530 | [diff] [blame] | 34 | |
| 35 | static int omap3evm_hw_params(struct snd_pcm_substream *substream, |
| 36 | struct snd_pcm_hw_params *params) |
| 37 | { |
| 38 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 39 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
Anuj Aggarwal | 14610ce | 2009-05-14 13:59:19 +0530 | [diff] [blame] | 40 | int ret; |
| 41 | |
Anuj Aggarwal | 14610ce | 2009-05-14 13:59:19 +0530 | [diff] [blame] | 42 | /* Set the codec system clock for DAC and ADC */ |
| 43 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000, |
| 44 | SND_SOC_CLOCK_IN); |
| 45 | if (ret < 0) { |
| 46 | printk(KERN_ERR "Can't set codec system clock\n"); |
| 47 | return ret; |
| 48 | } |
| 49 | |
| 50 | return 0; |
| 51 | } |
| 52 | |
| 53 | static struct snd_soc_ops omap3evm_ops = { |
| 54 | .hw_params = omap3evm_hw_params, |
| 55 | }; |
| 56 | |
| 57 | /* Digital audio interface glue - connects codec <--> CPU */ |
| 58 | static struct snd_soc_dai_link omap3evm_dai = { |
| 59 | .name = "TWL4030", |
| 60 | .stream_name = "TWL4030", |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 61 | .cpu_dai_name = "omap-mcbsp-dai.1", |
| 62 | .codec_dai_name = "twl4030-hifi", |
| 63 | .platform_name = "omap-pcm-audio", |
| 64 | .codec_name = "twl4030-codec", |
Jarkko Nikula | cf9feff | 2011-09-30 16:07:45 +0300 | [diff] [blame] | 65 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| 66 | SND_SOC_DAIFMT_CBM_CFM, |
Anuj Aggarwal | 14610ce | 2009-05-14 13:59:19 +0530 | [diff] [blame] | 67 | .ops = &omap3evm_ops, |
| 68 | }; |
| 69 | |
| 70 | /* Audio machine driver */ |
| 71 | static struct snd_soc_card snd_soc_omap3evm = { |
| 72 | .name = "omap3evm", |
Anuj Aggarwal | 14610ce | 2009-05-14 13:59:19 +0530 | [diff] [blame] | 73 | .dai_link = &omap3evm_dai, |
| 74 | .num_links = 1, |
| 75 | }; |
| 76 | |
Anuj Aggarwal | 14610ce | 2009-05-14 13:59:19 +0530 | [diff] [blame] | 77 | static struct platform_device *omap3evm_snd_device; |
| 78 | |
| 79 | static int __init omap3evm_soc_init(void) |
| 80 | { |
| 81 | int ret; |
| 82 | |
Jarkko Nikula | ec588ae | 2010-10-06 16:47:26 +0300 | [diff] [blame] | 83 | if (!machine_is_omap3evm()) |
Anuj Aggarwal | 14610ce | 2009-05-14 13:59:19 +0530 | [diff] [blame] | 84 | return -ENODEV; |
Anuj Aggarwal | 14610ce | 2009-05-14 13:59:19 +0530 | [diff] [blame] | 85 | pr_info("OMAP3 EVM SoC init\n"); |
| 86 | |
| 87 | omap3evm_snd_device = platform_device_alloc("soc-audio", -1); |
| 88 | if (!omap3evm_snd_device) { |
| 89 | printk(KERN_ERR "Platform device allocation failed\n"); |
| 90 | return -ENOMEM; |
| 91 | } |
| 92 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 93 | platform_set_drvdata(omap3evm_snd_device, &snd_soc_omap3evm); |
Anuj Aggarwal | 14610ce | 2009-05-14 13:59:19 +0530 | [diff] [blame] | 94 | ret = platform_device_add(omap3evm_snd_device); |
| 95 | if (ret) |
| 96 | goto err1; |
| 97 | |
| 98 | return 0; |
| 99 | |
| 100 | err1: |
| 101 | printk(KERN_ERR "Unable to add platform device\n"); |
| 102 | platform_device_put(omap3evm_snd_device); |
| 103 | |
| 104 | return ret; |
| 105 | } |
| 106 | |
| 107 | static void __exit omap3evm_soc_exit(void) |
| 108 | { |
| 109 | platform_device_unregister(omap3evm_snd_device); |
| 110 | } |
| 111 | |
| 112 | module_init(omap3evm_soc_init); |
| 113 | module_exit(omap3evm_soc_exit); |
| 114 | |
| 115 | MODULE_AUTHOR("Anuj Aggarwal <anuj.aggarwal@ti.com>"); |
| 116 | MODULE_DESCRIPTION("ALSA SoC OMAP3 EVM"); |
Anuj Aggarwal | bd6ddcb | 2009-11-17 21:43:42 +0530 | [diff] [blame] | 117 | MODULE_LICENSE("GPL v2"); |