/* linux/arch/arm/mach-s3c2410/s3c2412.c * * Copyright (c) 2006 Simtec Electronics * Ben Dooks <ben@simtec.co.uk> * * http://armlinux.simtec.co.uk/. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * Modifications: * 16-May-2003 BJD Created initial version * 16-Aug-2003 BJD Fixed header files and copyright, added URL * 05-Sep-2003 BJD Moved to kernel v2.6 * 18-Jan-2004 BJD Added serial port configuration * 21-Aug-2004 BJD Added new struct s3c2410_board handler * 28-Sep-2004 BJD Updates for new serial port bits * 04-Nov-2004 BJD Updated UART configuration process * 10-Jan-2005 BJD Removed s3c2410_clock_tick_rate * 13-Aug-2005 DA Removed UART from initial I/O mappings */ #include <linux/kernel.h> #include <linux/types.h> #include <linux/interrupt.h> #include <linux/list.h> #include <linux/timer.h> #include <linux/init.h> #include <linux/sysdev.h> #include <linux/platform_device.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> #include <asm/mach/irq.h> #include <asm/hardware.h> #include <asm/io.h> #include <asm/irq.h> #include <asm/arch/regs-clock.h> #include <asm/arch/regs-serial.h> #include <asm/arch/regs-gpio.h> #include <asm/arch/regs-gpioj.h> #include <asm/arch/regs-dsc.h> #include "s3c2412.h" #include "cpu.h" #include "devs.h" #include "clock.h" #include "pm.h" #ifndef CONFIG_CPU_S3C2412_ONLY void __iomem *s3c24xx_va_gpio2 = S3C24XX_VA_GPIO; #endif /* Initial IO mappings */ static struct map_desc s3c2412_iodesc[] __initdata = { IODESC_ENT(CLKPWR), IODESC_ENT(LCD), IODESC_ENT(TIMER), IODESC_ENT(ADC), IODESC_ENT(WATCHDOG), }; /* uart registration process */ void __init s3c2412_init_uarts(struct s3c2410_uartcfg *cfg, int no) { s3c24xx_init_uartdevs("s3c2412-uart", s3c2410_uart_resources, cfg, no); /* rename devices that are s3c2412/s3c2413 specific */ s3c_device_sdi.name = "s3c2412-sdi"; s3c_device_nand.name = "s3c2412-nand"; } /* s3c2412_map_io * * register the standard cpu IO areas, and any passed in from the * machine specific initialisation. */ void __init s3c2412_map_io(struct map_desc *mach_desc, int mach_size) { /* move base of IO */ s3c24xx_va_gpio2 = S3C24XX_VA_GPIO + 0x10; /* register our io-tables */ iotable_init(s3c2412_iodesc, ARRAY_SIZE(s3c2412_iodesc)); iotable_init(mach_desc, mach_size); } void __init s3c2412_init_clocks(int xtal) { unsigned long tmp; unsigned long fclk; unsigned long hclk; unsigned long pclk; /* now we've got our machine bits initialised, work out what * clocks we've got */ fclk = s3c2410_get_pll(__raw_readl(S3C2410_MPLLCON), xtal*2); tmp = __raw_readl(S3C2410_CLKDIVN); /* work out clock scalings */ hclk = fclk / ((tmp & S3C2412_CLKDIVN_HDIVN_MASK) + 1); hclk /= ((tmp & S3C2421_CLKDIVN_ARMDIVN) ? 2 : 1); pclk = hclk / ((tmp & S3C2412_CLKDIVN_PDIVN) ? 2 : 1); /* print brieft summary of clocks, etc */ printk("S3C2412: core %ld.%03ld MHz, memory %ld.%03ld MHz, peripheral %ld.%03ld MHz\n", print_mhz(fclk), print_mhz(hclk), print_mhz(pclk)); /* initialise the clocks here, to allow other things like the * console to use them */ s3c24xx_setup_clocks(xtal, fclk, hclk, pclk); s3c2412_baseclk_add(); } /* need to register class before we actually register the device, and * we also need to ensure that it has been initialised before any of the * drivers even try to use it (even if not on an s3c2412 based system) * as a driver which may support both 2410 and 2440 may try and use it. */ #ifdef CONFIG_PM static struct sleep_save s3c2412_sleep[] = { SAVE_ITEM(S3C2412_DSC0), SAVE_ITEM(S3C2412_DSC1), SAVE_ITEM(S3C2413_GPJDAT), SAVE_ITEM(S3C2413_GPJCON), SAVE_ITEM(S3C2413_GPJUP), /* save the sleep configuration anyway, just in case these * get damaged during wakeup */ SAVE_ITEM(S3C2412_GPBSLPCON), SAVE_ITEM(S3C2412_GPCSLPCON), SAVE_ITEM(S3C2412_GPDSLPCON), SAVE_ITEM(S3C2412_GPESLPCON), SAVE_ITEM(S3C2412_GPFSLPCON), SAVE_ITEM(S3C2412_GPGSLPCON), SAVE_ITEM(S3C2412_GPHSLPCON), SAVE_ITEM(S3C2413_GPJSLPCON), }; static int s3c2412_suspend(struct sys_device *dev, pm_message_t state) { s3c2410_pm_do_save(s3c2412_sleep, ARRAY_SIZE(s3c2412_sleep)); return 0; } static int s3c2412_resume(struct sys_device *dev) { s3c2410_pm_do_restore(s3c2412_sleep, ARRAY_SIZE(s3c2412_sleep)); return 0; } #else #define s3c2412_suspend NULL #define s3c2412_resume NULL #endif struct sysdev_class s3c2412_sysclass = { set_kset_name("s3c2412-core"), .suspend = s3c2412_suspend, .resume = s3c2412_resume }; static int __init s3c2412_core_init(void) { return sysdev_class_register(&s3c2412_sysclass); } core_initcall(s3c2412_core_init); static struct sys_device s3c2412_sysdev = { .cls = &s3c2412_sysclass, }; int __init s3c2412_init(void) { printk("S3C2412: Initialising architecture\n"); return sysdev_register(&s3c2412_sysdev); }