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 32static 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 47static struct s3c24xx_audio_simtec_pdata simtec_audio_platdata; 48static char our_name[32]; 49 50static 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 59int __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