mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
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159 lines
3.8 KiB
C
159 lines
3.8 KiB
C
/*
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* Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
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* N526 eBook reader support
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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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/gpio.h>
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#include <asm/mach-jz4740/platform.h>
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#include <linux/mtd/jz4740_nand.h>
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#include <linux/jz4740_fb.h>
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#include <linux/power_supply.h>
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#include <linux/power/jz4740-battery.h>
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#include <linux/mmc/jz4740_mmc.h>
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/* NAND */
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static struct nand_ecclayout n526_ecclayout = {
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.eccbytes = 36,
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.eccpos = {
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6, 7, 8, 9, 10, 11, 12, 13,
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14, 15, 16, 17, 18, 19, 20, 21,
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22, 23, 24, 25, 26, 27, 28, 29,
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30, 31, 32, 33, 34, 35, 36, 37,
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38, 39, 40, 41},
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.oobfree = {
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{.offset = 2,
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.length = 4},
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{.offset = 42,
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.length = 22}}
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};
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static struct mtd_partition n526_partitions[] = {
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{ .name = "NAND BOOT partition",
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.offset = 0 * 0x100000,
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.size = 4 * 0x100000,
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},
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{ .name = "NAND KERNEL partition",
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.offset = 4 * 0x100000,
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.size = 4 * 0x100000,
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},
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{ .name = "NAND ROOTFS partition",
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.offset = 8 * 0x100000,
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.size = 504 * 0x100000,
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},
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{ .name = "NAND DATA partition",
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.offset = 512 * 0x100000,
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.size = 512 * 0x100000,
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},
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};
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static struct jz_nand_platform_data n526_nand_pdata = {
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.ecc_layout = &n526_ecclayout,
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.partitions = n526_partitions,
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.num_partitions = ARRAY_SIZE(n526_partitions),
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.busy_gpio = 94,
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};
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/* Battery */
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/*static struct jz_batt_info n526_battery_pdata = {
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.dc_dect_gpio = GPIO_DC_DETE_N,
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.usb_dect_gpio = GPIO_USB_DETE,
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.charg_stat_gpio = GPIO_CHARG_STAT_N,
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.min_voltag = 3600000,
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.max_voltag = 4200000,
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.batt_tech = POWER_SUPPLY_TECHNOLOGY_LIPO,
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};*/
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static struct jz4740_mmc_platform_data n526_mmc_pdata = {
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.gpio_card_detect = JZ_GPIO_PORTD(7),
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.card_detect_active_low = 1,
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.gpio_read_only = -1,
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.gpio_power = JZ_GPIO_PORTD(17),
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.power_active_low = 1,
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};
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static struct gpio_led n526_leds[] = {
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{
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.name = "n526:blue:power",
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.gpio = JZ_GPIO_PORTD(28),
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.default_state = LEDS_GPIO_DEFSTATE_ON,
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}
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};
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static struct gpio_led_platform_data n526_leds_pdata = {
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.leds = n526_leds,
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.num_leds = ARRAY_SIZE(n526_leds),
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};
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static struct platform_device n526_leds_device = {
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.name = "leds-gpio",
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.id = -1,
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.dev = {
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.platform_data = &n526_leds_pdata,
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},
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};
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static struct platform_device *jz_platform_devices[] __initdata = {
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&jz4740_usb_ohci_device,
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&jz4740_usb_gdt_device,
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&jz4740_mmc_device,
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&jz4740_nand_device,
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&jz4740_i2s_device,
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&jz4740_codec_device,
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&jz4740_rtc_device,
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&n526_leds_device,
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};
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static void __init board_gpio_setup(void)
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{
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/* We only need to enable/disable pullup here for pins used in generic
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* drivers. Everything else is done by the drivers themselfs. */
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jz_gpio_disable_pullup(JZ_GPIO_PORTD(17));
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jz_gpio_enable_pullup(JZ_GPIO_PORTD(7));
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}
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static int __init n526_init_platform_devices(void)
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{
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jz4740_nand_device.dev.platform_data = &n526_nand_pdata;
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/* jz4740_battery_device.dev.platform_data = &n526_battery_pdata;*/
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jz4740_mmc_device.dev.platform_data = &n526_mmc_pdata;
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return platform_add_devices(jz_platform_devices,
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ARRAY_SIZE(jz_platform_devices));
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}
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extern int jz_gpiolib_init(void);
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extern int jz_init_clocks(unsigned long extal);
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static int __init n526_board_setup(void)
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{
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if (jz_gpiolib_init())
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panic("Failed to initalize jz gpio\n");
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jz_init_clocks(12000000);
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board_gpio_setup();
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if (n526_init_platform_devices())
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panic("Failed to initalize platform devices\n");
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return 0;
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}
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arch_initcall(n526_board_setup);
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