1 /* linux/arch/arm/plat-s3c24xx/simtec-audio.c
2 *
3 * Copyright (c) 2009 Simtec Electronics
4 * http://armlinux.simtec.co.uk/
5 * Ben Dooks <ben@simtec.co.uk>
6 *
7 * Audio setup for various Simtec S3C24XX implementations
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14 #include <linux/kernel.h>
15 #include <linux/interrupt.h>
16 #include <linux/init.h>
17 #include <linux/device.h>
18 #include <linux/io.h>
19
20 #include <mach/bast-map.h>
21 #include <mach/bast-irq.h>
22 #include <mach/bast-cpld.h>
23
24 #include <mach/hardware.h>
25 #include <mach/regs-gpio.h>
26
27 #include <plat/audio-simtec.h>
28 #include <plat/devs.h>
29
30 /* platform ops for audio */
31
simtec_audio_startup_lrroute(void)32 static void simtec_audio_startup_lrroute(void)
33 {
34 unsigned int tmp;
35 unsigned long flags;
36
37 local_irq_save(flags);
38
39 tmp = __raw_readb(BAST_VA_CTRL1);
40 tmp &= ~BAST_CPLD_CTRL1_LRMASK;
41 tmp |= BAST_CPLD_CTRL1_LRCDAC;
42 __raw_writeb(tmp, BAST_VA_CTRL1);
43
44 local_irq_restore(flags);
45 }
46
47 static struct s3c24xx_audio_simtec_pdata simtec_audio_platdata;
48 static char our_name[32];
49
50 static struct platform_device simtec_audio_dev = {
51 .name = our_name,
52 .id = -1,
53 .dev = {
54 .parent = &s3c_device_iis.dev,
55 .platform_data = &simtec_audio_platdata,
56 },
57 };
58
simtec_audio_add(const char * name,bool has_lr_routing,struct s3c24xx_audio_simtec_pdata * spd)59 int __init simtec_audio_add(const char *name, bool has_lr_routing,
60 struct s3c24xx_audio_simtec_pdata *spd)
61 {
62 if (!name)
63 name = "tlv320aic23";
64
65 snprintf(our_name, sizeof(our_name)-1, "s3c24xx-simtec-%s", name);
66
67 /* copy platform data so the source can be __initdata */
68 if (spd)
69 simtec_audio_platdata = *spd;
70
71 if (has_lr_routing)
72 simtec_audio_platdata.startup = simtec_audio_startup_lrroute;
73
74 platform_device_register(&s3c_device_iis);
75 platform_device_register(&simtec_audio_dev);
76 return 0;
77 }
78