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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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77789ad8b1
Allow the various GPIO-connected buttons to be used as wakeup sources. Also enable the internal GPIO pullup. Signed-off-by: Sedji Gaouaou <sedji.gaouaou@atmel.com> Signed-off-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
268 lines
6.1 KiB
C
268 lines
6.1 KiB
C
/*
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* linux/arch/arm/mach-at91/board-csb337.c
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*
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* Copyright (C) 2005 SAN People
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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/types.h>
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#include <linux/init.h>
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/spi/spi.h>
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#include <linux/mtd/physmap.h>
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#include <linux/input.h>
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#include <linux/gpio_keys.h>
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#include <asm/setup.h>
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#include <asm/mach-types.h>
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#include <asm/irq.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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#include <mach/hardware.h>
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#include <mach/board.h>
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#include <mach/gpio.h>
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#include "generic.h"
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static void __init csb337_map_io(void)
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{
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/* Initialize processor: 3.6864 MHz crystal */
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at91rm9200_initialize(3686400, AT91RM9200_BGA);
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/* Setup the LEDs */
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at91_init_leds(AT91_PIN_PB0, AT91_PIN_PB1);
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/* DBGU on ttyS0 */
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at91_register_uart(0, 0, 0);
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/* make console=ttyS0 the default */
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at91_set_serial_console(0);
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}
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static void __init csb337_init_irq(void)
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{
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at91rm9200_init_interrupts(NULL);
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}
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static struct at91_eth_data __initdata csb337_eth_data = {
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.phy_irq_pin = AT91_PIN_PC2,
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.is_rmii = 0,
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};
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static struct at91_usbh_data __initdata csb337_usbh_data = {
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.ports = 2,
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};
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static struct at91_udc_data __initdata csb337_udc_data = {
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// this has no VBUS sensing pin
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.pullup_pin = AT91_PIN_PA24,
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};
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static struct i2c_board_info __initdata csb337_i2c_devices[] = {
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{
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I2C_BOARD_INFO("ds1307", 0x68),
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},
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};
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static struct at91_cf_data __initdata csb337_cf_data = {
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/*
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* connector P4 on the CSB 337 mates to
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* connector P8 on the CSB 300CF
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*/
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/* CSB337 specific */
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.det_pin = AT91_PIN_PC3,
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/* CSB300CF specific */
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.irq_pin = AT91_PIN_PA19,
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.vcc_pin = AT91_PIN_PD0,
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.rst_pin = AT91_PIN_PD2,
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};
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static struct at91_mmc_data __initdata csb337_mmc_data = {
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.det_pin = AT91_PIN_PD5,
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.slot_b = 0,
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.wire4 = 1,
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.wp_pin = AT91_PIN_PD6,
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};
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static struct spi_board_info csb337_spi_devices[] = {
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{ /* CAN controller */
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.modalias = "sak82c900",
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.chip_select = 0,
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.max_speed_hz = 6 * 1000 * 1000,
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},
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};
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#define CSB_FLASH_BASE AT91_CHIPSELECT_0
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#define CSB_FLASH_SIZE SZ_8M
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static struct mtd_partition csb_flash_partitions[] = {
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{
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.name = "uMON flash",
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.offset = 0,
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.size = MTDPART_SIZ_FULL,
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.mask_flags = MTD_WRITEABLE, /* read only */
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}
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};
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static struct physmap_flash_data csb_flash_data = {
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.width = 2,
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.parts = csb_flash_partitions,
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.nr_parts = ARRAY_SIZE(csb_flash_partitions),
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};
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static struct resource csb_flash_resources[] = {
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{
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.start = CSB_FLASH_BASE,
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.end = CSB_FLASH_BASE + CSB_FLASH_SIZE - 1,
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.flags = IORESOURCE_MEM,
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}
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};
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static struct platform_device csb_flash = {
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.name = "physmap-flash",
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.id = 0,
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.dev = {
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.platform_data = &csb_flash_data,
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},
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.resource = csb_flash_resources,
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.num_resources = ARRAY_SIZE(csb_flash_resources),
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};
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/*
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* GPIO Buttons (on CSB300)
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*/
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#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
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static struct gpio_keys_button csb300_buttons[] = {
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{
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.gpio = AT91_PIN_PB29,
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.code = BTN_0,
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.desc = "sw0",
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.active_low = 1,
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.wakeup = 1,
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},
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{
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.gpio = AT91_PIN_PB28,
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.code = BTN_1,
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.desc = "sw1",
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.active_low = 1,
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.wakeup = 1,
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},
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{
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.gpio = AT91_PIN_PA21,
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.code = BTN_2,
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.desc = "sw2",
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.active_low = 1,
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.wakeup = 1,
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}
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};
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static struct gpio_keys_platform_data csb300_button_data = {
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.buttons = csb300_buttons,
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.nbuttons = ARRAY_SIZE(csb300_buttons),
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};
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static struct platform_device csb300_button_device = {
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.name = "gpio-keys",
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.id = -1,
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.num_resources = 0,
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.dev = {
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.platform_data = &csb300_button_data,
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}
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};
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static void __init csb300_add_device_buttons(void)
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{
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at91_set_gpio_input(AT91_PIN_PB29, 1); /* sw0 */
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at91_set_deglitch(AT91_PIN_PB29, 1);
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at91_set_gpio_input(AT91_PIN_PB28, 1); /* sw1 */
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at91_set_deglitch(AT91_PIN_PB28, 1);
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at91_set_gpio_input(AT91_PIN_PA21, 1); /* sw2 */
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at91_set_deglitch(AT91_PIN_PA21, 1);
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platform_device_register(&csb300_button_device);
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}
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#else
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static void __init csb300_add_device_buttons(void) {}
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#endif
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static struct gpio_led csb_leds[] = {
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{ /* "led0", yellow */
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.name = "led0",
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.gpio = AT91_PIN_PB2,
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.active_low = 1,
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.default_trigger = "heartbeat",
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},
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{ /* "led1", green */
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.name = "led1",
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.gpio = AT91_PIN_PB1,
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.active_low = 1,
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.default_trigger = "mmc0",
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},
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{ /* "led2", yellow */
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.name = "led2",
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.gpio = AT91_PIN_PB0,
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.active_low = 1,
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.default_trigger = "ide-disk",
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}
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};
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static void __init csb337_board_init(void)
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{
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/* Serial */
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at91_add_device_serial();
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/* Ethernet */
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at91_add_device_eth(&csb337_eth_data);
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/* USB Host */
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at91_add_device_usbh(&csb337_usbh_data);
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/* USB Device */
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at91_add_device_udc(&csb337_udc_data);
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/* I2C */
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at91_add_device_i2c(csb337_i2c_devices, ARRAY_SIZE(csb337_i2c_devices));
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/* Compact Flash */
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at91_set_gpio_input(AT91_PIN_PB22, 1); /* IOIS16 */
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at91_add_device_cf(&csb337_cf_data);
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/* SPI */
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at91_add_device_spi(csb337_spi_devices, ARRAY_SIZE(csb337_spi_devices));
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/* MMC */
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at91_add_device_mmc(0, &csb337_mmc_data);
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/* NOR flash */
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platform_device_register(&csb_flash);
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/* LEDs */
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at91_gpio_leds(csb_leds, ARRAY_SIZE(csb_leds));
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/* Switches on CSB300 */
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csb300_add_device_buttons();
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}
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MACHINE_START(CSB337, "Cogent CSB337")
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/* Maintainer: Bill Gatliff */
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.phys_io = AT91_BASE_SYS,
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.io_pg_offst = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
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.boot_params = AT91_SDRAM_BASE + 0x100,
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.timer = &at91rm9200_timer,
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.map_io = csb337_map_io,
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.init_irq = csb337_init_irq,
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.init_machine = csb337_board_init,
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MACHINE_END
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