| Ben Dooks | 4d3a346 | 2009-11-13 22:34:20 +0000 | [diff] [blame] | 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 | } |