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 <sound/soc-dapm.h> 16 #include <asm/io.h> 17 18 #define IPSEL 0xFE400034 19 20 /* platform specific structs can be declared here */ 21 extern struct snd_soc_dai_driver sh4_hac_dai[2]; 22 extern struct snd_soc_platform_driver sh7760_soc_platform; 23 24 static int machine_init(struct snd_soc_pcm_runtime *rtd) 25 { 26 snd_soc_dapm_sync(&rtd->codec->dapm); 27 return 0; 28 } 29 30 static struct snd_soc_dai_link sh7760_ac97_dai = { 31 .name = "AC97", 32 .stream_name = "AC97 HiFi", 33 .cpu_dai_name = "hac-dai.0", /* HAC0 */ 34 .codec_dai_name = "ac97-hifi", 35 .platform_name = "sh7760-pcm-audio", 36 .codec_name = "ac97-codec", 37 .init = machine_init, 38 .ops = NULL, 39 }; 40 41 static struct snd_soc_card sh7760_ac97_soc_machine = { 42 .name = "SH7760 AC97", 43 .dai_link = &sh7760_ac97_dai, 44 .num_links = 1, 45 }; 46 47 static struct platform_device *sh7760_ac97_snd_device; 48 49 static int __init sh7760_ac97_init(void) 50 { 51 int ret; 52 unsigned short ipsel; 53 54 /* enable both AC97 controllers in pinmux reg */ 55 ipsel = __raw_readw(IPSEL); 56 __raw_writew(ipsel | (3 << 10), IPSEL); 57 58 ret = -ENOMEM; 59 sh7760_ac97_snd_device = platform_device_alloc("soc-audio", -1); 60 if (!sh7760_ac97_snd_device) 61 goto out; 62 63 platform_set_drvdata(sh7760_ac97_snd_device, 64 &sh7760_ac97_soc_machine); 65 ret = platform_device_add(sh7760_ac97_snd_device); 66 67 if (ret) 68 platform_device_put(sh7760_ac97_snd_device); 69 70 out: 71 return ret; 72 } 73 74 static void __exit sh7760_ac97_exit(void) 75 { 76 platform_device_unregister(sh7760_ac97_snd_device); 77 } 78 79 module_init(sh7760_ac97_init); 80 module_exit(sh7760_ac97_exit); 81 82 MODULE_LICENSE("GPL"); 83 MODULE_DESCRIPTION("Generic SH7760 AC97 sound machine"); 84 MODULE_AUTHOR("Manuel Lauss <mano@roarinelk.homelinux.net>"); 85