1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // Generic AC97 sound support for SH7760 4 // 5 // (c) 2007 Manuel Lauss 6 7 #include <linux/module.h> 8 #include <linux/moduleparam.h> 9 #include <linux/platform_device.h> 10 #include <sound/core.h> 11 #include <sound/pcm.h> 12 #include <sound/soc.h> 13 #include <asm/io.h> 14 15 #define IPSEL 0xFE400034 16 17 SND_SOC_DAILINK_DEFS(ac97, 18 DAILINK_COMP_ARRAY(COMP_CPU("hac-dai.0")), /* HAC0 */ 19 DAILINK_COMP_ARRAY(COMP_CODEC("ac97-codec", "ac97-hifi")), 20 DAILINK_COMP_ARRAY(COMP_PLATFORM("sh7760-pcm-audio"))); 21 22 static struct snd_soc_dai_link sh7760_ac97_dai = { 23 .name = "AC97", 24 .stream_name = "AC97 HiFi", 25 SND_SOC_DAILINK_REG(ac97), 26 }; 27 28 static struct snd_soc_card sh7760_ac97_soc_machine = { 29 .name = "SH7760 AC97", 30 .owner = THIS_MODULE, 31 .dai_link = &sh7760_ac97_dai, 32 .num_links = 1, 33 }; 34 35 static struct platform_device *sh7760_ac97_snd_device; 36 37 static int __init sh7760_ac97_init(void) 38 { 39 int ret; 40 unsigned short ipsel; 41 42 /* enable both AC97 controllers in pinmux reg */ 43 ipsel = __raw_readw(IPSEL); 44 __raw_writew(ipsel | (3 << 10), IPSEL); 45 46 ret = -ENOMEM; 47 sh7760_ac97_snd_device = platform_device_alloc("soc-audio", -1); 48 if (!sh7760_ac97_snd_device) 49 goto out; 50 51 platform_set_drvdata(sh7760_ac97_snd_device, 52 &sh7760_ac97_soc_machine); 53 ret = platform_device_add(sh7760_ac97_snd_device); 54 55 if (ret) 56 platform_device_put(sh7760_ac97_snd_device); 57 58 out: 59 return ret; 60 } 61 62 static void __exit sh7760_ac97_exit(void) 63 { 64 platform_device_unregister(sh7760_ac97_snd_device); 65 } 66 67 module_init(sh7760_ac97_init); 68 module_exit(sh7760_ac97_exit); 69 70 MODULE_LICENSE("GPL v2"); 71 MODULE_DESCRIPTION("Generic SH7760 AC97 sound machine"); 72 MODULE_AUTHOR("Manuel Lauss <mano@roarinelk.homelinux.net>"); 73