| wanzongshun | 7ec80dd | 2008-12-03 03:55:38 +0100 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/arm/mach-w90x900/w90p910.c |
| 3 | * |
| 4 | * Based on linux/arch/arm/plat-s3c24xx/s3c244x.c by Ben Dooks |
| 5 | * |
| 6 | * Copyright (c) 2008 Nuvoton technology corporation |
| 7 | * All rights reserved. |
| 8 | * |
| 9 | * Wan ZongShun <mcuos.com@gmail.com> |
| 10 | * |
| 11 | * W90P910 cpu support |
| 12 | * |
| 13 | * This program is free software; you can redistribute it and/or modify |
| 14 | * it under the terms of the GNU General Public License as published by |
| 15 | * the Free Software Foundation; either version 2 of the License, or |
| 16 | * (at your option) any later version. |
| 17 | * |
| 18 | */ |
| 19 | |
| 20 | #include <linux/kernel.h> |
| 21 | #include <linux/types.h> |
| 22 | #include <linux/interrupt.h> |
| 23 | #include <linux/list.h> |
| 24 | #include <linux/timer.h> |
| 25 | #include <linux/init.h> |
| 26 | #include <linux/platform_device.h> |
| 27 | #include <linux/io.h> |
| 28 | |
| 29 | #include <asm/mach/arch.h> |
| 30 | #include <asm/mach/map.h> |
| 31 | #include <asm/mach/irq.h> |
| 32 | #include <asm/irq.h> |
| 33 | |
| 34 | #include <mach/hardware.h> |
| 35 | #include <mach/regs-serial.h> |
| 36 | |
| 37 | #include "cpu.h" |
| 38 | |
| 39 | /*W90P910 has five uarts*/ |
| 40 | |
| 41 | #define MAX_UART_COUNT 5 |
| 42 | static int uart_count; |
| 43 | static struct platform_device *uart_devs[MAX_UART_COUNT-1]; |
| 44 | |
| 45 | /* Initial IO mappings */ |
| 46 | |
| 47 | static struct map_desc w90p910_iodesc[] __initdata = { |
| 48 | IODESC_ENT(IRQ), |
| 49 | IODESC_ENT(GCR), |
| 50 | IODESC_ENT(UART), |
| 51 | IODESC_ENT(TIMER), |
| 52 | IODESC_ENT(EBI), |
| 53 | /*IODESC_ENT(LCD),*/ |
| 54 | }; |
| 55 | |
| 56 | /*Init the dev resource*/ |
| 57 | |
| 58 | static W90X900_RES(UART0); |
| 59 | static W90X900_RES(UART1); |
| 60 | static W90X900_RES(UART2); |
| 61 | static W90X900_RES(UART3); |
| 62 | static W90X900_RES(UART4); |
| 63 | static W90X900_DEVICE(uart0, UART0, 0, "w90x900-uart"); |
| 64 | static W90X900_DEVICE(uart1, UART1, 1, "w90x900-uart"); |
| 65 | static W90X900_DEVICE(uart2, UART2, 2, "w90x900-uart"); |
| 66 | static W90X900_DEVICE(uart3, UART3, 3, "w90x900-uart"); |
| 67 | static W90X900_DEVICE(uart4, UART4, 4, "w90x900-uart"); |
| 68 | |
| 69 | static struct platform_device *uart_devices[] __initdata = { |
| 70 | &w90x900_uart0, |
| 71 | &w90x900_uart1, |
| 72 | &w90x900_uart2, |
| 73 | &w90x900_uart3, |
| 74 | &w90x900_uart4 |
| 75 | }; |
| 76 | |
| 77 | /*Init W90P910 uart device*/ |
| 78 | |
| 79 | void __init w90p910_init_uarts(struct w90x900_uartcfg *cfg, int no) |
| 80 | { |
| 81 | struct platform_device *platdev; |
| 82 | int uart, uartdev; |
| 83 | |
| 84 | /*By min() to judge count of uart be used indeed*/ |
| 85 | |
| 86 | uartdev = ARRAY_SIZE(uart_devices); |
| 87 | no = min(uartdev, no); |
| 88 | |
| 89 | for (uart = 0; uart < no; uart++, cfg++) { |
| 90 | if (cfg->hwport != uart) |
| 91 | printk(KERN_ERR "w90x900_uartcfg[%d] error\n", uart); |
| 92 | platdev = uart_devices[cfg->hwport]; |
| 93 | uart_devs[uart] = platdev; |
| 94 | platdev->dev.platform_data = cfg; |
| 95 | } |
| 96 | uart_count = uart; |
| 97 | } |
| 98 | |
| 99 | /*Init W90P910 evb io*/ |
| 100 | |
| 101 | void __init w90p910_map_io(struct map_desc *mach_desc, int mach_size) |
| 102 | { |
| 103 | unsigned long idcode = 0x0; |
| 104 | |
| 105 | iotable_init(w90p910_iodesc, ARRAY_SIZE(w90p910_iodesc)); |
| 106 | |
| 107 | idcode = __raw_readl(W90X900PDID); |
| 108 | if (idcode != W90P910_CPUID) |
| 109 | printk(KERN_ERR "CPU type 0x%08lx is not W90P910\n", idcode); |
| 110 | } |
| 111 | |
| 112 | /*Init W90P910 clock*/ |
| 113 | |
| 114 | void __init w90p910_init_clocks(int xtal) |
| 115 | { |
| 116 | } |
| 117 | |
| 118 | static int __init w90p910_init_cpu(void) |
| 119 | { |
| 120 | return 0; |
| 121 | } |
| 122 | |
| 123 | static int __init w90x900_arch_init(void) |
| 124 | { |
| 125 | int ret; |
| 126 | |
| 127 | ret = w90p910_init_cpu(); |
| 128 | if (ret != 0) |
| 129 | return ret; |
| 130 | |
| 131 | return platform_add_devices(uart_devs, uart_count); |
| 132 | |
| 133 | } |
| 134 | arch_initcall(w90x900_arch_init); |