forked from Minki/linux
7ba01f9728
Patch from Lennert Buytenhek Instantiate the recently merged m48t86 rtc driver in the ts72xx code. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
158 lines
4.2 KiB
C
158 lines
4.2 KiB
C
/*
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* arch/arm/mach-ep93xx/ts72xx.c
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* Technologic Systems TS72xx SBC support.
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*
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* Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
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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; either version 2 of the License, or (at
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* your option) any later version.
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*/
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#include <linux/config.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/mm.h>
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#include <linux/sched.h>
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#include <linux/interrupt.h>
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#include <linux/mtd/physmap.h>
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#include <linux/platform_device.h>
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#include <linux/m48t86.h>
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#include <asm/io.h>
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#include <asm/hardware.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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static struct map_desc ts72xx_io_desc[] __initdata = {
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{
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.virtual = TS72XX_MODEL_VIRT_BASE,
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.pfn = __phys_to_pfn(TS72XX_MODEL_PHYS_BASE),
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.length = TS72XX_MODEL_SIZE,
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.type = MT_DEVICE,
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}, {
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.virtual = TS72XX_OPTIONS_VIRT_BASE,
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.pfn = __phys_to_pfn(TS72XX_OPTIONS_PHYS_BASE),
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.length = TS72XX_OPTIONS_SIZE,
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.type = MT_DEVICE,
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}, {
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.virtual = TS72XX_OPTIONS2_VIRT_BASE,
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.pfn = __phys_to_pfn(TS72XX_OPTIONS2_PHYS_BASE),
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.length = TS72XX_OPTIONS2_SIZE,
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.type = MT_DEVICE,
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}, {
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.virtual = TS72XX_RTC_INDEX_VIRT_BASE,
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.pfn = __phys_to_pfn(TS72XX_RTC_INDEX_PHYS_BASE),
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.length = TS72XX_RTC_INDEX_SIZE,
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.type = MT_DEVICE,
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}, {
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.virtual = TS72XX_RTC_DATA_VIRT_BASE,
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.pfn = __phys_to_pfn(TS72XX_RTC_DATA_PHYS_BASE),
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.length = TS72XX_RTC_DATA_SIZE,
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.type = MT_DEVICE,
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}
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};
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static struct map_desc ts72xx_nand_io_desc[] __initdata = {
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{
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.virtual = TS72XX_NAND_DATA_VIRT_BASE,
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.pfn = __phys_to_pfn(TS72XX_NAND1_DATA_PHYS_BASE),
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.length = TS72XX_NAND_DATA_SIZE,
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.type = MT_DEVICE,
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}, {
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.virtual = TS72XX_NAND_CONTROL_VIRT_BASE,
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.pfn = __phys_to_pfn(TS72XX_NAND1_CONTROL_PHYS_BASE),
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.length = TS72XX_NAND_CONTROL_SIZE,
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.type = MT_DEVICE,
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}, {
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.virtual = TS72XX_NAND_BUSY_VIRT_BASE,
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.pfn = __phys_to_pfn(TS72XX_NAND1_BUSY_PHYS_BASE),
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.length = TS72XX_NAND_BUSY_SIZE,
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.type = MT_DEVICE,
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}
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};
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static struct map_desc ts72xx_alternate_nand_io_desc[] __initdata = {
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{
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.virtual = TS72XX_NAND_DATA_VIRT_BASE,
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.pfn = __phys_to_pfn(TS72XX_NAND2_DATA_PHYS_BASE),
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.length = TS72XX_NAND_DATA_SIZE,
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.type = MT_DEVICE,
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}, {
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.virtual = TS72XX_NAND_CONTROL_VIRT_BASE,
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.pfn = __phys_to_pfn(TS72XX_NAND2_CONTROL_PHYS_BASE),
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.length = TS72XX_NAND_CONTROL_SIZE,
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.type = MT_DEVICE,
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}, {
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.virtual = TS72XX_NAND_BUSY_VIRT_BASE,
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.pfn = __phys_to_pfn(TS72XX_NAND2_BUSY_PHYS_BASE),
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.length = TS72XX_NAND_BUSY_SIZE,
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.type = MT_DEVICE,
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}
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};
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static void __init ts72xx_map_io(void)
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{
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ep93xx_map_io();
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iotable_init(ts72xx_io_desc, ARRAY_SIZE(ts72xx_io_desc));
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/*
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* The TS-7200 has NOR flash, the other models have NAND flash.
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*/
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if (!board_is_ts7200()) {
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if (is_ts9420_installed()) {
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iotable_init(ts72xx_alternate_nand_io_desc,
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ARRAY_SIZE(ts72xx_alternate_nand_io_desc));
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} else {
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iotable_init(ts72xx_nand_io_desc,
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ARRAY_SIZE(ts72xx_nand_io_desc));
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}
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}
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}
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static unsigned char ts72xx_rtc_readb(unsigned long addr)
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{
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__raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE);
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return __raw_readb(TS72XX_RTC_DATA_VIRT_BASE);
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}
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static void ts72xx_rtc_writeb(unsigned char value, unsigned long addr)
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{
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__raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE);
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__raw_writeb(value, TS72XX_RTC_DATA_VIRT_BASE);
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}
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static struct m48t86_ops ts72xx_rtc_ops = {
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.readb = ts72xx_rtc_readb,
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.writeb = ts72xx_rtc_writeb,
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};
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static struct platform_device ts72xx_rtc_device = {
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.name = "rtc-m48t86",
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.id = -1,
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.dev = {
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.platform_data = &ts72xx_rtc_ops,
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},
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.num_resources = 0,
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};
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static void __init ts72xx_init_machine(void)
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{
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ep93xx_init_devices();
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if (board_is_ts7200())
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physmap_configure(TS72XX_NOR_PHYS_BASE, 0x01000000, 1, NULL);
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platform_device_register(&ts72xx_rtc_device);
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}
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MACHINE_START(TS72XX, "Technologic Systems TS-72xx SBC")
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/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
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.phys_io = EP93XX_APB_PHYS_BASE,
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.io_pg_offst = ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc,
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.boot_params = 0x00000100,
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.map_io = ts72xx_map_io,
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.init_irq = ep93xx_init_irq,
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.timer = &ep93xx_timer,
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.init_machine = ts72xx_init_machine,
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MACHINE_END
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