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  1/*
  2 * linux/arch/arm/mach-nuc93x/cpu.c
  3 *
  4 * Copyright (c) 2009 Nuvoton corporation.
  5 *
  6 * Wan ZongShun <mcuos.com@gmail.com>
  7 *
  8 * NUC93x series cpu common support
  9 *
 10 * This program is free software; you can redistribute it and/or modify
 11 * it under the terms of the GNU General Public License as published by
 12 * the Free Software Foundation;version 2 of the License.
 13 *
 14 */
 15
 16#include <linux/kernel.h>
 17#include <linux/types.h>
 18#include <linux/interrupt.h>
 19#include <linux/list.h>
 20#include <linux/timer.h>
 21#include <linux/init.h>
 22#include <linux/platform_device.h>
 23#include <linux/io.h>
 24#include <linux/serial_8250.h>
 25#include <linux/delay.h>
 26
 27#include <asm/mach/arch.h>
 28#include <asm/mach/map.h>
 29#include <asm/mach/irq.h>
 30#include <asm/irq.h>
 31
 32#include <mach/hardware.h>
 33#include <mach/regs-serial.h>
 34#include <mach/regs-clock.h>
 35#include <mach/regs-ebi.h>
 36
 37#include "cpu.h"
 38#include "clock.h"
 39
 40/* Initial IO mappings */
 41
 42static struct map_desc nuc93x_iodesc[] __initdata = {
 43	IODESC_ENT(IRQ),
 44	IODESC_ENT(GCR),
 45	IODESC_ENT(UART),
 46	IODESC_ENT(TIMER),
 47	IODESC_ENT(EBI),
 48};
 49
 50/* Initial nuc932 clock declarations. */
 51static DEFINE_CLK(audio, 2);
 52static DEFINE_CLK(sd, 3);
 53static DEFINE_CLK(jpg, 4);
 54static DEFINE_CLK(video, 5);
 55static DEFINE_CLK(vpost, 6);
 56static DEFINE_CLK(2d, 7);
 57static DEFINE_CLK(gpu, 8);
 58static DEFINE_CLK(gdma, 9);
 59static DEFINE_CLK(adc, 10);
 60static DEFINE_CLK(uart, 11);
 61static DEFINE_CLK(spi, 12);
 62static DEFINE_CLK(pwm, 13);
 63static DEFINE_CLK(timer, 14);
 64static DEFINE_CLK(wdt, 15);
 65static DEFINE_CLK(ac97, 16);
 66static DEFINE_CLK(i2s, 16);
 67static DEFINE_CLK(usbck, 17);
 68static DEFINE_CLK(usb48, 18);
 69static DEFINE_CLK(usbh, 19);
 70static DEFINE_CLK(i2c, 20);
 71static DEFINE_CLK(ext, 0);
 72
 73static struct clk_lookup nuc932_clkregs[] = {
 74       DEF_CLKLOOK(&clk_audio, "nuc932-audio", NULL),
 75       DEF_CLKLOOK(&clk_sd, "nuc932-sd", NULL),
 76       DEF_CLKLOOK(&clk_jpg, "nuc932-jpg", "NULL"),
 77       DEF_CLKLOOK(&clk_video, "nuc932-video", "NULL"),
 78       DEF_CLKLOOK(&clk_vpost, "nuc932-vpost", NULL),
 79       DEF_CLKLOOK(&clk_2d, "nuc932-2d", NULL),
 80       DEF_CLKLOOK(&clk_gpu, "nuc932-gpu", NULL),
 81       DEF_CLKLOOK(&clk_gdma, "nuc932-gdma", "NULL"),
 82       DEF_CLKLOOK(&clk_adc, "nuc932-adc", NULL),
 83       DEF_CLKLOOK(&clk_uart, NULL, "uart"),
 84       DEF_CLKLOOK(&clk_spi, "nuc932-spi", NULL),
 85       DEF_CLKLOOK(&clk_pwm, "nuc932-pwm", NULL),
 86       DEF_CLKLOOK(&clk_timer, NULL, "timer"),
 87       DEF_CLKLOOK(&clk_wdt, "nuc932-wdt", NULL),
 88       DEF_CLKLOOK(&clk_ac97, "nuc932-ac97", NULL),
 89       DEF_CLKLOOK(&clk_i2s, "nuc932-i2s", NULL),
 90       DEF_CLKLOOK(&clk_usbck, "nuc932-usbck", NULL),
 91       DEF_CLKLOOK(&clk_usb48, "nuc932-usb48", NULL),
 92       DEF_CLKLOOK(&clk_usbh, "nuc932-usbh", NULL),
 93       DEF_CLKLOOK(&clk_i2c, "nuc932-i2c", NULL),
 94       DEF_CLKLOOK(&clk_ext, NULL, "ext"),
 95};
 96
 97/* Initial serial platform data */
 98
 99struct plat_serial8250_port nuc93x_uart_data[] = {
100	NUC93X_8250PORT(UART0),
101	{},
102};
103
104struct platform_device nuc93x_serial_device = {
105	.name			= "serial8250",
106	.id			= PLAT8250_DEV_PLATFORM,
107	.dev			= {
108		.platform_data	= nuc93x_uart_data,
109	},
110};
111
112/*Init NUC93x evb io*/
113
114void __init nuc93x_map_io(struct map_desc *mach_desc, int mach_size)
115{
116	unsigned long idcode = 0x0;
117
118	iotable_init(mach_desc, mach_size);
119	iotable_init(nuc93x_iodesc, ARRAY_SIZE(nuc93x_iodesc));
120
121	idcode = __raw_readl(NUC93XPDID);
122	if (idcode == NUC932_CPUID)
123		printk(KERN_INFO "CPU type 0x%08lx is NUC910\n", idcode);
124	else
125		printk(KERN_ERR "CPU type detect error!\n");
126
127}
128
129/*Init NUC93x clock*/
130
131void __init nuc93x_init_clocks(void)
132{
133	clks_register(nuc932_clkregs, ARRAY_SIZE(nuc932_clkregs));
134}
135