66a9b49a37
Patch from Ben Dooks All the S3C24XX based devices currently have similar uart blocks, in the same location. Make the process of adding new uart blocks easier by commonising the device definitions and adding a new init function for the cpu code. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
118 lines
2.9 KiB
C
118 lines
2.9 KiB
C
/* linux/arch/arm/mach-s3c2410/s3c2410.c
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*
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* Copyright (c) 2003-2005 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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*
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* http://www.simtec.co.uk/products/EB2410ITX/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Modifications:
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* 16-May-2003 BJD Created initial version
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* 16-Aug-2003 BJD Fixed header files and copyright, added URL
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* 05-Sep-2003 BJD Moved to kernel v2.6
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* 18-Jan-2004 BJD Added serial port configuration
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* 21-Aug-2004 BJD Added new struct s3c2410_board handler
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* 28-Sep-2004 BJD Updates for new serial port bits
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* 04-Nov-2004 BJD Updated UART configuration process
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* 10-Jan-2005 BJD Removed s3c2410_clock_tick_rate
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* 13-Aug-2005 DA Removed UART from initial I/O mappings
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/list.h>
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#include <linux/timer.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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#include <asm/hardware.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/arch/regs-clock.h>
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#include <asm/arch/regs-serial.h>
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#include "s3c2410.h"
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#include "cpu.h"
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#include "devs.h"
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#include "clock.h"
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/* Initial IO mappings */
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static struct map_desc s3c2410_iodesc[] __initdata = {
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IODESC_ENT(USBHOST),
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IODESC_ENT(CLKPWR),
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IODESC_ENT(LCD),
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IODESC_ENT(TIMER),
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IODESC_ENT(ADC),
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IODESC_ENT(WATCHDOG),
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};
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/* our uart devices */
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/* uart registration process */
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void __init s3c2410_init_uarts(struct s3c2410_uartcfg *cfg, int no)
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{
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s3c24xx_init_uartdevs("s3c2410-uart", s3c2410_uart_resources, cfg, no);
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}
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/* s3c2410_map_io
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*
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* register the standard cpu IO areas, and any passed in from the
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* machine specific initialisation.
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*/
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void __init s3c2410_map_io(struct map_desc *mach_desc, int mach_size)
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{
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/* register our io-tables */
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iotable_init(s3c2410_iodesc, ARRAY_SIZE(s3c2410_iodesc));
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iotable_init(mach_desc, mach_size);
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}
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void __init s3c2410_init_clocks(int xtal)
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{
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unsigned long tmp;
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unsigned long fclk;
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unsigned long hclk;
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unsigned long pclk;
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/* now we've got our machine bits initialised, work out what
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* clocks we've got */
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fclk = s3c2410_get_pll(__raw_readl(S3C2410_MPLLCON), xtal);
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tmp = __raw_readl(S3C2410_CLKDIVN);
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/* work out clock scalings */
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hclk = fclk / ((tmp & S3C2410_CLKDIVN_HDIVN) ? 2 : 1);
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pclk = hclk / ((tmp & S3C2410_CLKDIVN_PDIVN) ? 2 : 1);
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/* print brieft summary of clocks, etc */
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printk("S3C2410: core %ld.%03ld MHz, memory %ld.%03ld MHz, peripheral %ld.%03ld MHz\n",
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print_mhz(fclk), print_mhz(hclk), print_mhz(pclk));
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/* initialise the clocks here, to allow other things like the
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* console to use them
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*/
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s3c24xx_setup_clocks(xtal, fclk, hclk, pclk);
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}
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int __init s3c2410_init(void)
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{
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printk("S3C2410: Initialising architecture\n");
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return 0;
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}
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