/* linux/arch/arm/mach-s3c2410/s3c2410.c
*
- * Copyright (c) 2003,2004 Simtec Electronics
- * Ben Dooks <ben@simtec.co.uk>
+ * Copyright (c) 2003-2005 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
*
* http://www.simtec.co.uk/products/EB2410ITX/
*
* 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
*/
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/timer.h>
#include <linux/init.h>
-#include <linux/device.h>
+#include <linux/sysdev.h>
+#include <linux/serial_core.h>
+#include <linux/platform_device.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include "s3c2410.h"
#include "cpu.h"
+#include "devs.h"
+#include "clock.h"
-int s3c2410_clock_tick_rate = 12*1000*1000; /* current timers at 12MHz */
-
-/* serial port setup */
-
-struct s3c2410_uartcfg *s3c2410_uartcfgs;
-
-/* clock info */
-
-unsigned long s3c2410_fclk;
-unsigned long s3c2410_hclk;
-unsigned long s3c2410_pclk;
+/* Initial IO mappings */
static struct map_desc s3c2410_iodesc[] __initdata = {
- IODESC_ENT(USBHOST),
IODESC_ENT(CLKPWR),
IODESC_ENT(LCD),
- IODESC_ENT(UART),
IODESC_ENT(TIMER),
- IODESC_ENT(ADC),
- IODESC_ENT(WATCHDOG)
-};
-
-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,
- }
+ IODESC_ENT(WATCHDOG),
};
/* our uart devices */
-static struct platform_device s3c_uart0 = {
- .name = "s3c2410-uart",
- .id = 0,
- .num_resources = ARRAY_SIZE(s3c_uart0_resource),
- .resource = s3c_uart0_resource,
-};
-
-
-static struct platform_device s3c_uart1 = {
- .name = "s3c2410-uart",
- .id = 1,
- .num_resources = ARRAY_SIZE(s3c_uart1_resource),
- .resource = s3c_uart1_resource,
-};
+/* uart registration process */
-static struct platform_device s3c_uart2 = {
- .name = "s3c2410-uart",
- .id = 2,
- .num_resources = ARRAY_SIZE(s3c_uart2_resource),
- .resource = s3c_uart2_resource,
-};
+void __init s3c2410_init_uarts(struct s3c2410_uartcfg *cfg, int no)
+{
+ s3c24xx_init_uartdevs("s3c2410-uart", s3c2410_uart_resources, cfg, no);
+}
-static struct platform_device *uart_devices[] __initdata = {
- &s3c_uart0,
- &s3c_uart1,
- &s3c_uart2
-};
+/* s3c2410_map_io
+ *
+ * register the standard cpu IO areas, and any passed in from the
+ * machine specific initialisation.
+*/
void __init s3c2410_map_io(struct map_desc *mach_desc, int mach_size)
{
- unsigned long tmp;
-
/* register our io-tables */
iotable_init(s3c2410_iodesc, ARRAY_SIZE(s3c2410_iodesc));
iotable_init(mach_desc, mach_size);
+}
- printk("machine_initted %p,%d\n", mach_desc, mach_size);
+void __init s3c2410_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 */
- s3c2410_fclk = s3c2410_get_pll(__raw_readl(S3C2410_MPLLCON), 12*MHZ);
+ fclk = s3c2410_get_pll(__raw_readl(S3C2410_MPLLCON), xtal);
tmp = __raw_readl(S3C2410_CLKDIVN);
- //printk("tmp=%08x, fclk=%d\n", tmp, s3c2410_fclk);
/* work out clock scalings */
- s3c2410_hclk = s3c2410_fclk / ((tmp & S3C2410_CLKDIVN_HDIVN) ? 2 : 1);
- s3c2410_pclk = s3c2410_hclk / ((tmp & S3C2410_CLKDIVN_PDIVN) ? 2 : 1);
+ hclk = fclk / ((tmp & S3C2410_CLKDIVN_HDIVN) ? 2 : 1);
+ pclk = hclk / ((tmp & S3C2410_CLKDIVN_PDIVN) ? 2 : 1);
/* print brieft summary of clocks, etc */
printk("S3C2410: core %ld.%03ld MHz, memory %ld.%03ld MHz, peripheral %ld.%03ld MHz\n",
- print_mhz(s3c2410_fclk), print_mhz(s3c2410_hclk),
- print_mhz(s3c2410_pclk));
-}
+ print_mhz(fclk), print_mhz(hclk), print_mhz(pclk));
-static struct s3c2410_board *board;
+ /* initialise the clocks here, to allow other things like the
+ * console to use them
+ */
-void s3c2410_set_board(struct s3c2410_board *b)
-{
- board = b;
+ s3c24xx_setup_clocks(xtal, fclk, hclk, pclk);
+ s3c2410_baseclk_add();
}
-void s3c2410_init_uarts(struct s3c2410_uartcfg *cfg, int no)
+struct sysdev_class s3c2410_sysclass = {
+ set_kset_name("s3c2410-core"),
+};
+
+static struct sys_device s3c2410_sysdev = {
+ .cls = &s3c2410_sysclass,
+};
+
+/* 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 s3c2440 based system)
+ * as a driver which may support both 2410 and 2440 may try and use it.
+*/
+
+static int __init s3c2410_core_init(void)
{
- s3c2410_uartcfgs = cfg;
+ return sysdev_class_register(&s3c2410_sysclass);
}
+core_initcall(s3c2410_core_init);
+
int __init s3c2410_init(void)
{
- int ret;
-
printk("S3C2410: Initialising architecture\n");
- ret = platform_add_devices(uart_devices, ARRAY_SIZE(uart_devices));
- if (ret)
- return ret;
-
- if (board != NULL) {
- if (board->devices != NULL) {
- ret = platform_add_devices(board->devices,
- board->devices_count);
-
- if (ret) {
- printk(KERN_ERR "s3c2410: failed to add board devices (%d)\n", ret);
- }
- }
-
- /* not adding board devices may not be fatal */
- ret = 0;
- }
-
- return ret;
+ return sysdev_register(&s3c2410_sysdev);
}
git://git.onelab.eu / linux-2.6.git / blobdiff