1 /* 2 * Generic AC97 sound support for SH7760 3 * 4 * (c) 2007 Manuel Lauss 5 * 6 * Licensed under the GPLv2. 7 */ 8 9 #include <linux/module.h> 10 #include <linux/moduleparam.h> 11 #include <linux/platform_device.h> 12 #include <sound/core.h> 13 #include <sound/pcm.h> 14 #include <sound/soc.h> 15 #include <asm/io.h> 16 17 #define IPSEL 0xFE400034 18 19 /* platform specific structs can be declared here */ 20 extern struct snd_soc_dai_driver sh4_hac_dai[2]; 21 extern struct snd_soc_platform_driver sh7760_soc_platform; 22 23 static int machine_init(struct snd_soc_pcm_runtime *rtd) 24 { 25 snd_soc_dapm_sync(&rtd->codec->dapm); 26 return 0; 27 } 28 29 static struct snd_soc_dai_link sh7760_ac97_dai = { 30 .name = "AC97", 31 .stream_name = "AC97 HiFi", 32 .cpu_dai_name = "hac-dai.0", /* HAC0 */ 33 .codec_dai_name = "ac97-hifi", 34 .platform_name = "sh7760-pcm-audio", 35 .codec_name = "ac97-codec", 36 .init = machine_init, 37 .ops = NULL, 38 }; 39 40 static struct snd_soc_card sh7760_ac97_soc_machine = { 41 .name = "SH7760 AC97", 42 .dai_link = &sh7760_ac97_dai, 43 .num_links = 1, 44 }; 45 46 static struct platform_device *sh7760_ac97_snd_device; 47 48 static int __init sh7760_ac97_init(void) 49 { 50 int ret; 51 unsigned short ipsel; 52 53 /* enable both AC97 controllers in pinmux reg */ 54 ipsel = __raw_readw(IPSEL); 55 __raw_writew(ipsel | (3 << 10), IPSEL); 56 57 ret = -ENOMEM; 58 sh7760_ac97_snd_device = platform_device_alloc("soc-audio", -1); 59 if (!sh7760_ac97_snd_device) 60 goto out; 61 62 platform_set_drvdata(sh7760_ac97_snd_device, 63 &sh7760_ac97_soc_machine); 64 ret = platform_device_add(sh7760_ac97_snd_device); 65 66 if (ret) 67 platform_device_put(sh7760_ac97_snd_device); 68 69 out: 70 return ret; 71 } 72 73 static void __exit sh7760_ac97_exit(void) 74 { 75 platform_device_unregister(sh7760_ac97_snd_device); 76 } 77 78 module_init(sh7760_ac97_init); 79 module_exit(sh7760_ac97_exit); 80 81 MODULE_LICENSE("GPL"); 82 MODULE_DESCRIPTION("Generic SH7760 AC97 sound machine"); 83 MODULE_AUTHOR("Manuel Lauss <mano@roarinelk.homelinux.net>"); 84