Merge branch 'bkl-drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[sfrench/cifs-2.6.git] / arch / arm / plat-s3c24xx / simtec-audio.c
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
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
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 }