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4d3a3469 BD |
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 | } |