/* linux/arch/arm/mach-s3c2410/s3c2440.c
*
- * Copyright (c) 2004 Simtec Electronics
+ * Copyright (c) 2004-2006 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
*
* Samsung S3C2440 Mobile CPU support
* 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:
- * 24-Aug-2004 BJD Start of s3c2440 support
*/
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/timer.h>
#include <linux/init.h>
-#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/serial_core.h>
+#include <linux/sysdev.h>
+#include <linux/clk.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/io.h>
#include <asm/irq.h>
-#include <asm/arch/regs-clock.h>
-#include <asm/arch/regs-serial.h>
-
#include "s3c2440.h"
+#include "devs.h"
#include "cpu.h"
-int s3c2440_clock_tick_rate = 12*1000*1000; /* current timers at 12MHz */
-
-/* clock info */
-
-unsigned long s3c2440_baseclk = 12*1000*1000; /* assume base is 12MHz */
-unsigned long s3c2440_hdiv;
-
-unsigned long s3c2440_fclk;
-unsigned long s3c2440_hclk;
-unsigned long s3c2440_pclk;
-
-static struct map_desc s3c2440_iodesc[] __initdata = {
- IODESC_ENT(USBHOST),
- IODESC_ENT(CLKPWR),
- IODESC_ENT(LCD),
- IODESC_ENT(TIMER),
- IODESC_ENT(ADC),
-};
-
-static struct resource s3c_uart0_resource[] = {
- [0] = {
- .start = S3C2410_PA_UART0,
- .end = S3C2410_PA_UART0 + 0x3fff,
- .flags = IORESOURCE_MEM,
- },
- [1] = {
- .start = IRQ_S3CUART_RX0,
- .end = IRQ_S3CUART_ERR0,
- .flags = IORESOURCE_IRQ,
- }
-
-};
-
-static struct resource s3c_uart1_resource[] = {
- [0] = {
- .start = S3C2410_PA_UART1,
- .end = S3C2410_PA_UART1 + 0x3fff,
- .flags = IORESOURCE_MEM,
- },
- [1] = {
- .start = IRQ_S3CUART_RX1,
- .end = IRQ_S3CUART_ERR1,
- .flags = IORESOURCE_IRQ,
- }
-};
-
-static struct resource s3c_uart2_resource[] = {
- [0] = {
- .start = S3C2410_PA_UART2,
- .end = S3C2410_PA_UART2 + 0x3fff,
- .flags = IORESOURCE_MEM,
- },
- [1] = {
- .start = IRQ_S3CUART_RX2,
- .end = IRQ_S3CUART_ERR2,
- .flags = IORESOURCE_IRQ,
- }
-};
-
-/* our uart devices */
-
-static struct platform_device s3c_uart0 = {
- .name = "s3c2440-uart",
- .id = 0,
- .num_resources = ARRAY_SIZE(s3c_uart0_resource),
- .resource = s3c_uart0_resource,
-};
-
-
-static struct platform_device s3c_uart1 = {
- .name = "s3c2440-uart",
- .id = 1,
- .num_resources = ARRAY_SIZE(s3c_uart1_resource),
- .resource = s3c_uart1_resource,
-};
-
-static struct platform_device s3c_uart2 = {
- .name = "s3c2440-uart",
- .id = 2,
- .num_resources = ARRAY_SIZE(s3c_uart2_resource),
- .resource = s3c_uart2_resource,
-};
-
-static struct platform_device *uart_devices[] __initdata = {
- &s3c_uart0,
- &s3c_uart1,
- &s3c_uart2
+static struct sys_device s3c2440_sysdev = {
+ .cls = &s3c2440_sysclass,
};
-void __init s3c2440_map_io(struct map_desc *mach_desc, int size)
-{
- unsigned long tmp;
- unsigned long camdiv;
-
- /* register our io-tables */
-
- iotable_init(s3c2440_iodesc, ARRAY_SIZE(s3c2440_iodesc));
- iotable_init(mach_desc, size);
-
- /* now we've got our machine bits initialised, work out what
- * clocks we've got */
-
- s3c2440_fclk = s3c2410_get_pll(__raw_readl(S3C2410_MPLLCON),
- s3c2440_baseclk);
-
- tmp = __raw_readl(S3C2410_CLKDIVN);
- camdiv = __raw_readl(S3C2440_CAMDIVN);
-
- /* work out clock scalings */
-
- switch (tmp & S3C2440_CLKDIVN_HDIVN_MASK) {
- case S3C2440_CLKDIVN_HDIVN_1:
- s3c2440_hdiv = 1;
- break;
-
- case S3C2440_CLKDIVN_HDIVN_2:
- s3c2440_hdiv = 1;
- break;
-
- case S3C2440_CLKDIVN_HDIVN_4_8:
- s3c2440_hdiv = (camdiv & S3C2440_CAMDIVN_HCLK4_HALF) ? 8 : 4;
- break;
-
- case S3C2440_CLKDIVN_HDIVN_3_6:
- s3c2440_hdiv = (camdiv & S3C2440_CAMDIVN_HCLK4_HALF) ? 6 : 3;
- break;
- }
-
- s3c2440_hclk = s3c2440_fclk / s3c2440_hdiv;
- s3c2440_pclk = s3c2440_hclk / ((tmp & S3C2440_CLKDIVN_PDIVN) ? 2 : 1);
-
- /* print brieft summary of clocks, etc */
-
- printk("S3C2440: core %ld.%03ld MHz, memory %ld.%03ld MHz, peripheral %ld.%03ld MHz\n",
- print_mhz(s3c2440_fclk), print_mhz(s3c2440_hclk),
- print_mhz(s3c2440_pclk));
-}
-
-
-
int __init s3c2440_init(void)
{
- int ret;
-
printk("S3C2440: Initialising architecture\n");
- ret = platform_add_devices(uart_devices, ARRAY_SIZE(uart_devices));
- if (ret)
- return ret;
+ /* change irq for watchdog */
- // todo: board specific inits?
+ s3c_device_wdt.resource[1].start = IRQ_S3C2440_WDT;
+ s3c_device_wdt.resource[1].end = IRQ_S3C2440_WDT;
- return ret;
-}
+ /* register our system device for everything else */
+ return sysdev_register(&s3c2440_sysdev);
+}
git://git.onelab.eu / linux-2.6.git / blobdiff