diff options
Diffstat (limited to 'arch/arm/mach-s3c2412/s3c2412.c')
| -rw-r--r-- | arch/arm/mach-s3c2412/s3c2412.c | 253 |
1 files changed, 0 insertions, 253 deletions
diff --git a/arch/arm/mach-s3c2412/s3c2412.c b/arch/arm/mach-s3c2412/s3c2412.c deleted file mode 100644 index aff6e85..0000000 --- a/arch/arm/mach-s3c2412/s3c2412.c +++ /dev/null @@ -1,253 +0,0 @@ -/* linux/arch/arm/mach-s3c2412/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. -*/ - -#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/clk.h> -#include <linux/delay.h> -#include <linux/device.h> -#include <linux/syscore_ops.h> -#include <linux/serial_core.h> -#include <linux/platform_device.h> -#include <linux/io.h> - -#include <asm/mach/arch.h> -#include <asm/mach/map.h> -#include <asm/mach/irq.h> - -#include <mach/hardware.h> -#include <asm/proc-fns.h> -#include <asm/irq.h> - -#include <mach/idle.h> - -#include <plat/cpu-freq.h> - -#include <mach/regs-clock.h> -#include <plat/regs-serial.h> -#include <mach/regs-power.h> -#include <mach/regs-gpio.h> -#include <mach/regs-gpioj.h> -#include <mach/regs-dsc.h> -#include <plat/regs-spi.h> -#include <mach/regs-s3c2412.h> - -#include <plat/s3c2412.h> -#include <plat/cpu.h> -#include <plat/devs.h> -#include <plat/clock.h> -#include <plat/pm.h> -#include <plat/pll.h> -#include <plat/nand-core.h> - -#ifndef CONFIG_CPU_S3C2412_ONLY -void __iomem *s3c24xx_va_gpio2 = S3C24XX_VA_GPIO; - -static inline void s3c2412_init_gpio2(void) -{ - s3c24xx_va_gpio2 = S3C24XX_VA_GPIO + 0x10; -} -#else -#define s3c2412_init_gpio2() do { } while(0) -#endif - -/* Initial IO mappings */ - -static struct map_desc s3c2412_iodesc[] __initdata = { - IODESC_ENT(CLKPWR), - IODESC_ENT(TIMER), - IODESC_ENT(WATCHDOG), - { - .virtual = (unsigned long)S3C2412_VA_SSMC, - .pfn = __phys_to_pfn(S3C2412_PA_SSMC), - .length = SZ_1M, - .type = MT_DEVICE, - }, - { - .virtual = (unsigned long)S3C2412_VA_EBI, - .pfn = __phys_to_pfn(S3C2412_PA_EBI), - .length = SZ_1M, - .type = MT_DEVICE, - }, -}; - -/* 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_lcd.name = "s3c2412-lcd"; - s3c_nand_setname("s3c2412-nand"); - - /* alter IRQ of SDI controller */ - - s3c_device_sdi.resource[1].start = IRQ_S3C2412_SDI; - s3c_device_sdi.resource[1].end = IRQ_S3C2412_SDI; - - /* spi channel related changes, s3c2412/13 specific */ - s3c_device_spi0.name = "s3c2412-spi"; - s3c_device_spi0.resource[0].end = S3C24XX_PA_SPI + 0x24; - s3c_device_spi1.name = "s3c2412-spi"; - s3c_device_spi1.resource[0].start = S3C24XX_PA_SPI + S3C2412_SPI1; - s3c_device_spi1.resource[0].end = S3C24XX_PA_SPI + S3C2412_SPI1 + 0x24; - -} - -/* s3c2412_idle - * - * use the standard idle call by ensuring the idle mode - * in power config, then issuing the idle co-processor - * instruction -*/ - -static void s3c2412_idle(void) -{ - unsigned long tmp; - - /* ensure our idle mode is to go to idle */ - - tmp = __raw_readl(S3C2412_PWRCFG); - tmp &= ~S3C2412_PWRCFG_STANDBYWFI_MASK; - tmp |= S3C2412_PWRCFG_STANDBYWFI_IDLE; - __raw_writel(tmp, S3C2412_PWRCFG); - - cpu_do_idle(); -} - -void s3c2412_restart(char mode, const char *cmd) -{ - if (mode == 's') - soft_restart(0); - - /* errata "Watch-dog/Software Reset Problem" specifies that - * this reset must be done with the SYSCLK sourced from - * EXTCLK instead of FOUT to avoid a glitch in the reset - * mechanism. - * - * See the watchdog section of the S3C2412 manual for more - * information on this fix. - */ - - __raw_writel(0x00, S3C2412_CLKSRC); - __raw_writel(S3C2412_SWRST_RESET, S3C2412_SWRST); - - mdelay(1); -} - -/* s3c2412_map_io - * - * register the standard cpu IO areas, and any passed in from the - * machine specific initialisation. -*/ - -void __init s3c2412_map_io(void) -{ - /* move base of IO */ - - s3c2412_init_gpio2(); - - /* set our idle function */ - - s3c24xx_idle = s3c2412_idle; - - /* register our io-tables */ - - iotable_init(s3c2412_iodesc, ARRAY_SIZE(s3c2412_iodesc)); -} - -void __init_or_cpufreq s3c2412_setup_clocks(void) -{ - struct clk *xtal_clk; - unsigned long tmp; - unsigned long xtal; - unsigned long fclk; - unsigned long hclk; - unsigned long pclk; - - xtal_clk = clk_get(NULL, "xtal"); - xtal = clk_get_rate(xtal_clk); - clk_put(xtal_clk); - - /* now we've got our machine bits initialised, work out what - * clocks we've got */ - - fclk = s3c24xx_get_pll(__raw_readl(S3C2410_MPLLCON), xtal * 2); - - clk_mpll.rate = fclk; - - tmp = __raw_readl(S3C2410_CLKDIVN); - - /* work out clock scalings */ - - hclk = fclk / ((tmp & S3C2412_CLKDIVN_HDIVN_MASK) + 1); - hclk /= ((tmp & S3C2412_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)); - - s3c24xx_setup_clocks(fclk, hclk, pclk); -} - -void __init s3c2412_init_clocks(int xtal) -{ - /* initialise the clocks here, to allow other things like the - * console to use them - */ - - s3c24xx_register_baseclocks(xtal); - s3c2412_setup_clocks(); - s3c2412_baseclk_add(); -} - -/* need to register the subsystem 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. -*/ - -struct bus_type s3c2412_subsys = { - .name = "s3c2412-core", - .dev_name = "s3c2412-core", -}; - -static int __init s3c2412_core_init(void) -{ - return subsys_system_register(&s3c2412_subsys, NULL); -} - -core_initcall(s3c2412_core_init); - -static struct device s3c2412_dev = { - .bus = &s3c2412_subsys, -}; - -int __init s3c2412_init(void) -{ - printk("S3C2412: Initialising architecture\n"); - -#ifdef CONFIG_PM - register_syscore_ops(&s3c2412_pm_syscore_ops); -#endif - register_syscore_ops(&s3c24xx_irq_syscore_ops); - - return device_register(&s3c2412_dev); -} |
