233 lines
5.8 KiB
C
233 lines
5.8 KiB
C
/*
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* linux/arch/arm/mach-clps711x/p720t.c
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*
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* Copyright (C) 2000-2001 Deep Blue Solutions Ltd
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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
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/io.h>
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#include <linux/slab.h>
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#include <linux/leds.h>
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#include <linux/sizes.h>
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#include <linux/backlight.h>
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#include <linux/platform_device.h>
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#include <linux/mtd/partitions.h>
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#include <linux/mtd/nand-gpio.h>
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#include <mach/hardware.h>
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#include <asm/pgtable.h>
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#include <asm/page.h>
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#include <asm/setup.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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#include <mach/syspld.h>
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#include <video/platform_lcd.h>
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#include "common.h"
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#define P720T_USERLED CLPS711X_GPIO(3, 0)
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#define P720T_NAND_CLE CLPS711X_GPIO(4, 0)
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#define P720T_NAND_ALE CLPS711X_GPIO(4, 1)
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#define P720T_NAND_NCE CLPS711X_GPIO(4, 2)
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#define P720T_NAND_BASE (CLPS711X_SDRAM1_BASE)
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static struct resource p720t_nand_resource[] __initdata = {
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DEFINE_RES_MEM(P720T_NAND_BASE, SZ_4),
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};
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static struct mtd_partition p720t_nand_parts[] __initdata = {
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{
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.name = "Flash partition 1",
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.offset = 0,
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.size = SZ_2M,
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},
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{
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.name = "Flash partition 2",
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.offset = MTDPART_OFS_APPEND,
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.size = MTDPART_SIZ_FULL,
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},
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};
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static struct gpio_nand_platdata p720t_nand_pdata __initdata = {
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.gpio_rdy = -1,
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.gpio_nce = P720T_NAND_NCE,
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.gpio_ale = P720T_NAND_ALE,
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.gpio_cle = P720T_NAND_CLE,
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.gpio_nwp = -1,
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.chip_delay = 15,
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.parts = p720t_nand_parts,
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.num_parts = ARRAY_SIZE(p720t_nand_parts),
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};
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static struct platform_device p720t_nand_pdev __initdata = {
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.name = "gpio-nand",
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.id = -1,
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.resource = p720t_nand_resource,
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.num_resources = ARRAY_SIZE(p720t_nand_resource),
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.dev = {
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.platform_data = &p720t_nand_pdata,
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},
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};
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static void p720t_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
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{
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if (power) {
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PLD_LCDEN = PLD_LCDEN_EN;
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PLD_PWR |= PLD_S4_ON | PLD_S2_ON | PLD_S1_ON;
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} else {
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PLD_PWR &= ~(PLD_S4_ON | PLD_S2_ON | PLD_S1_ON);
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PLD_LCDEN = 0;
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}
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}
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static struct plat_lcd_data p720t_lcd_power_pdata = {
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.set_power = p720t_lcd_power_set,
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};
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static void p720t_lcd_backlight_set_intensity(int intensity)
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{
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if (intensity)
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PLD_PWR |= PLD_S3_ON;
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else
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PLD_PWR = 0;
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}
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static struct generic_bl_info p720t_lcd_backlight_pdata = {
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.name = "lcd-backlight.0",
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.default_intensity = 0x01,
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.max_intensity = 0x01,
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.set_bl_intensity = p720t_lcd_backlight_set_intensity,
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};
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/*
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* Map the P720T system PLD. It occupies two address spaces:
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* 0x10000000 and 0x10400000. We map both regions as one.
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*/
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static struct map_desc p720t_io_desc[] __initdata = {
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{
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.virtual = SYSPLD_VIRT_BASE,
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.pfn = __phys_to_pfn(SYSPLD_PHYS_BASE),
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.length = SZ_8M,
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.type = MT_DEVICE,
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},
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};
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static void __init
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fixup_p720t(struct tag *tag, char **cmdline, struct meminfo *mi)
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{
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/*
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* Our bootloader doesn't setup any tags (yet).
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*/
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if (tag->hdr.tag != ATAG_CORE) {
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tag->hdr.tag = ATAG_CORE;
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tag->hdr.size = tag_size(tag_core);
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tag->u.core.flags = 0;
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tag->u.core.pagesize = PAGE_SIZE;
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tag->u.core.rootdev = 0x0100;
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tag = tag_next(tag);
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tag->hdr.tag = ATAG_MEM;
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tag->hdr.size = tag_size(tag_mem32);
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tag->u.mem.size = 4096;
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tag->u.mem.start = PHYS_OFFSET;
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tag = tag_next(tag);
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tag->hdr.tag = ATAG_NONE;
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tag->hdr.size = 0;
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}
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}
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static void __init p720t_map_io(void)
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{
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clps711x_map_io();
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iotable_init(p720t_io_desc, ARRAY_SIZE(p720t_io_desc));
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}
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static void __init p720t_init_early(void)
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{
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/*
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* Power down as much as possible in case we don't
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* have the drivers loaded.
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*/
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PLD_LCDEN = 0;
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PLD_PWR &= ~(PLD_S4_ON|PLD_S3_ON|PLD_S2_ON|PLD_S1_ON);
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PLD_KBD = 0;
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PLD_IO = 0;
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PLD_IRDA = 0;
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PLD_CODEC = 0;
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PLD_TCH = 0;
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PLD_SPI = 0;
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if (!IS_ENABLED(CONFIG_DEBUG_LL)) {
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PLD_COM2 = 0;
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PLD_COM1 = 0;
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}
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}
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static struct gpio_led p720t_gpio_leds[] = {
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{
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.name = "User LED",
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.default_trigger = "heartbeat",
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.gpio = P720T_USERLED,
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},
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};
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static struct gpio_led_platform_data p720t_gpio_led_pdata __initdata = {
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.leds = p720t_gpio_leds,
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.num_leds = ARRAY_SIZE(p720t_gpio_leds),
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};
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static void __init p720t_init(void)
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{
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platform_device_register(&p720t_nand_pdev);
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platform_device_register_data(&platform_bus, "platform-lcd", 0,
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&p720t_lcd_power_pdata,
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sizeof(p720t_lcd_power_pdata));
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platform_device_register_data(&platform_bus, "generic-bl", 0,
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&p720t_lcd_backlight_pdata,
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sizeof(p720t_lcd_backlight_pdata));
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platform_device_register_simple("video-clps711x", 0, NULL, 0);
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}
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static void __init p720t_init_late(void)
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{
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platform_device_register_data(&platform_bus, "leds-gpio", 0,
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&p720t_gpio_led_pdata,
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sizeof(p720t_gpio_led_pdata));
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}
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MACHINE_START(P720T, "ARM-Prospector720T")
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/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
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.atag_offset = 0x100,
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.nr_irqs = CLPS711X_NR_IRQS,
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.fixup = fixup_p720t,
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.map_io = p720t_map_io,
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.init_early = p720t_init_early,
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.init_irq = clps711x_init_irq,
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.init_time = clps711x_timer_init,
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.init_machine = p720t_init,
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.init_late = p720t_init_late,
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.handle_irq = clps711x_handle_irq,
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.restart = clps711x_restart,
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MACHINE_END
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