0e4a34bb65
Add clock api for w90p910 platform. Signed-off-by: Wan ZongShun <mcuos.com@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
137 lines
3.3 KiB
C
137 lines
3.3 KiB
C
/*
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* linux/arch/arm/mach-w90x900/w90p910.c
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*
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* Based on linux/arch/arm/plat-s3c24xx/s3c244x.c by Ben Dooks
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*
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* Copyright (c) 2008 Nuvoton technology corporation.
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*
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* Wan ZongShun <mcuos.com@gmail.com>
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*
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* W90P910 cpu support
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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 as published by
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* the Free Software Foundation;version 2 of the License.
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*
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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 <linux/io.h>
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#include <linux/serial_8250.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/irq.h>
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#include <mach/hardware.h>
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#include <mach/regs-serial.h>
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#include "cpu.h"
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#include "clock.h"
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/* Initial IO mappings */
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static struct map_desc w90p910_iodesc[] __initdata = {
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IODESC_ENT(IRQ),
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IODESC_ENT(GCR),
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IODESC_ENT(UART),
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IODESC_ENT(TIMER),
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IODESC_ENT(EBI),
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IODESC_ENT(USBEHCIHOST),
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IODESC_ENT(USBOHCIHOST),
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IODESC_ENT(ADC),
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IODESC_ENT(RTC),
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IODESC_ENT(KPI),
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IODESC_ENT(USBDEV),
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/*IODESC_ENT(LCD),*/
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};
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/* Initial clock declarations. */
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static DEFINE_CLK(lcd, 0);
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static DEFINE_CLK(audio, 1);
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static DEFINE_CLK(fmi, 4);
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static DEFINE_CLK(dmac, 5);
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static DEFINE_CLK(atapi, 6);
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static DEFINE_CLK(emc, 7);
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static DEFINE_CLK(usbd, 8);
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static DEFINE_CLK(usbh, 9);
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static DEFINE_CLK(g2d, 10);;
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static DEFINE_CLK(pwm, 18);
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static DEFINE_CLK(ps2, 24);
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static DEFINE_CLK(kpi, 25);
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static DEFINE_CLK(wdt, 26);
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static DEFINE_CLK(gdma, 27);
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static DEFINE_CLK(adc, 28);
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static DEFINE_CLK(usi, 29);
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static struct clk_lookup w90p910_clkregs[] = {
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DEF_CLKLOOK(&clk_lcd, "w90p910-lcd", NULL),
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DEF_CLKLOOK(&clk_audio, "w90p910-audio", NULL),
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DEF_CLKLOOK(&clk_fmi, "w90p910-fmi", NULL),
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DEF_CLKLOOK(&clk_dmac, "w90p910-dmac", NULL),
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DEF_CLKLOOK(&clk_atapi, "w90p910-atapi", NULL),
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DEF_CLKLOOK(&clk_emc, "w90p910-emc", NULL),
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DEF_CLKLOOK(&clk_usbd, "w90p910-usbd", NULL),
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DEF_CLKLOOK(&clk_usbh, "w90p910-usbh", NULL),
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DEF_CLKLOOK(&clk_g2d, "w90p910-g2d", NULL),
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DEF_CLKLOOK(&clk_pwm, "w90p910-pwm", NULL),
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DEF_CLKLOOK(&clk_ps2, "w90p910-ps2", NULL),
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DEF_CLKLOOK(&clk_kpi, "w90p910-kpi", NULL),
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DEF_CLKLOOK(&clk_wdt, "w90p910-wdt", NULL),
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DEF_CLKLOOK(&clk_gdma, "w90p910-gdma", NULL),
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DEF_CLKLOOK(&clk_adc, "w90p910-adc", NULL),
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DEF_CLKLOOK(&clk_usi, "w90p910-usi", NULL),
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};
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/* Initial serial platform data */
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struct plat_serial8250_port w90p910_uart_data[] = {
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W90X900_8250PORT(UART0),
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};
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struct platform_device w90p910_serial_device = {
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.name = "serial8250",
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.id = PLAT8250_DEV_PLATFORM,
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.dev = {
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.platform_data = w90p910_uart_data,
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},
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};
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/*Init W90P910 evb io*/
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void __init w90p910_map_io(struct map_desc *mach_desc, int mach_size)
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{
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unsigned long idcode = 0x0;
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iotable_init(w90p910_iodesc, ARRAY_SIZE(w90p910_iodesc));
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idcode = __raw_readl(W90X900PDID);
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if (idcode != W90P910_CPUID)
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printk(KERN_ERR "CPU type 0x%08lx is not W90P910\n", idcode);
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}
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/*Init W90P910 clock*/
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void __init w90p910_init_clocks(void)
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{
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clks_register(w90p910_clkregs, ARRAY_SIZE(w90p910_clkregs));
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}
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static int __init w90p910_init_cpu(void)
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{
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return 0;
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}
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static int __init w90x900_arch_init(void)
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{
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return w90p910_init_cpu();
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}
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arch_initcall(w90x900_arch_init);
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