- 根目录:
- arch
- arm
- mach-at91
- board-usb-a926x.c
/*
* linux/arch/arm/mach-at91/board-usb-a926x.c
*
* Copyright (C) 2005 SAN People
* Copyright (C) 2007 Atmel Corporation.
* Copyright (C) 2007 Calao-systems
* Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/types.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/gpio_keys.h>
#include <linux/gpio.h>
#include <linux/input.h>
#include <linux/spi/mmc_spi.h>
#include <asm/setup.h>
#include <asm/mach-types.h>
#include <asm/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <mach/hardware.h>
#include <mach/at91sam9_smc.h>
#include "at91_aic.h"
#include "at91_shdwc.h"
#include "board.h"
#include "sam9_smc.h"
#include "generic.h"
static void __init ek_init_early(void)
{
/* Initialize processor: 12.00 MHz crystal */
at91_initialize(12000000);
}
/*
* USB Host port
*/
static struct at91_usbh_data __initdata ek_usbh_data = {
.ports = 2,
.vbus_pin = {-EINVAL, -EINVAL},
.overcurrent_pin= {-EINVAL, -EINVAL},
};
/*
* USB Device port
*/
static struct at91_udc_data __initdata ek_udc_data = {
.vbus_pin = AT91_PIN_PB11,
.pullup_pin = -EINVAL, /* pull-up driven by UDC */
};
static void __init ek_add_device_udc(void)
{
if (machine_is_usb_a9260() || machine_is_usb_a9g20())
ek_udc_data.vbus_pin = AT91_PIN_PC5;
at91_add_device_udc(&ek_udc_data);
}
#if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
#define MMC_SPI_CARD_DETECT_INT AT91_PIN_PC4
static int at91_mmc_spi_init(struct device *dev,
irqreturn_t (*detect_int)(int, void *), void *data)
{
/* Configure Interrupt pin as input, no pull-up */
at91_set_gpio_input(MMC_SPI_CARD_DETECT_INT, 0);
return request_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), detect_int,
IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
"mmc-spi-detect", data);
}
static void at91_mmc_spi_exit(struct device *dev, void *data)
{
free_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), data);
}
static struct mmc_spi_platform_data at91_mmc_spi_pdata = {
.init = at91_mmc_spi_init,
.exit = at91_mmc_spi_exit,
.detect_delay = 100, /* msecs */
};
#endif
/*
* SPI devices.
*/
static struct spi_board_info usb_a9263_spi_devices[] = {
{ /* DataFlash chip */
.modalias = "mtd_dataflash",
.chip_select = 0,
.max_speed_hz = 15 * 1000 * 1000,
.bus_num = 0,
}
};
static struct spi_board_info usb_a9g20_spi_devices[] = {
#if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
{
.modalias = "mmc_spi",
.max_speed_hz = 20000000, /* max spi clock (SCK) speed in HZ */
.bus_num = 1,
.chip_select = 0,
.platform_data = &at91_mmc_spi_pdata,
.mode = SPI_MODE_3,
},
#endif
};
static void __init ek_add_device_spi(void)
{
if (machine_is_usb_a9263())
at91_add_device_spi(usb_a9263_spi_devices, ARRAY_SIZE(usb_a9263_spi_devices));
else if (machine_is_usb_a9g20())
at91_add_device_spi(usb_a9g20_spi_devices, ARRAY_SIZE(usb_a9g20_spi_devices));
}
/*
* MACB Ethernet device
*/
static struct macb_platform_data __initdata ek_macb_data = {
.phy_irq_pin = AT91_PIN_PE31,
.is_rmii = 1,
};
static void __init ek_add_device_eth(void)
{
if (machine_is_usb_a9260() || machine_is_usb_a9g20())
ek_macb_data.phy_irq_pin = AT91_PIN_PA31;
at91_add_device_eth(&ek_macb_data);
}
/*
* NAND flash
*/
static struct mtd_partition __initdata ek_nand_partition[] = {
{
.name = "barebox",
.offset = 0,
.size = 3 * SZ_128K,
}, {
.name = "bareboxenv",
.offset = MTDPART_OFS_NXTBLK,
.size = SZ_128K,
}, {
.name = "bareboxenv2",
.offset = MTDPART_OFS_NXTBLK,
.size = SZ_128K,
}, {
.name = "oftree",
.offset = MTDPART_OFS_NXTBLK,
.size = SZ_128K,
}, {
.name = "kernel",
.offset = MTDPART_OFS_NXTBLK,
.size = 4 * SZ_1M,
}, {
.name = "rootfs",
.offset = MTDPART_OFS_NXTBLK,
.size = 120 * SZ_1M,
}, {
.name = "data",
.offset = MTDPART_OFS_NXTBLK,
.size = MTDPART_SIZ_FULL,
}
};
static struct atmel_nand_data __initdata ek_nand_data = {
.ale = 21,
.cle = 22,
.det_pin = -EINVAL,
.rdy_pin = AT91_PIN_PA22,
.enable_pin = AT91_PIN_PD15,
.ecc_mode = NAND_ECC_SOFT,
.on_flash_bbt = 1,
.parts = ek_nand_partition,
.num_parts = ARRAY_SIZE(ek_nand_partition),
};
static struct sam9_smc_config __initdata usb_a9260_nand_smc_config = {
.ncs_read_setup = 0,
.nrd_setup = 1,
.ncs_write_setup = 0,
.nwe_setup = 1,
.ncs_read_pulse = 3,
.nrd_pulse = 3,
.ncs_write_pulse = 3,
.nwe_pulse = 3,
.read_cycle = 5,
.write_cycle = 5,
.mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
.tdf_cycles = 2,
};
static struct sam9_smc_config __initdata usb_a9g20_nand_smc_config = {
.ncs_read_setup = 0,
.nrd_setup = 2,
.ncs_write_setup = 0,
.nwe_setup = 2,
.ncs_read_pulse = 4,
.nrd_pulse = 4,
.ncs_write_pulse = 4,
.nwe_pulse = 4,
.read_cycle = 7,
.write_cycle = 7,
.mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
.tdf_cycles = 3,
};
static void __init ek_add_device_nand(void)
{
if (machine_is_usb_a9260() || machine_is_usb_a9g20()) {
ek_nand_data.rdy_pin = AT91_PIN_PC13;
ek_nand_data.enable_pin = AT91_PIN_PC14;
}
/* configure chip-select 3 (NAND) */
if (machine_is_usb_a9g20())
sam9_smc_configure(0, 3, &usb_a9g20_nand_smc_config);
else
sam9_smc_configure(0, 3, &usb_a9260_nand_smc_config);
at91_add_device_nand(&ek_nand_data);
}
/*
* GPIO Buttons
*/
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
static struct gpio_keys_button ek_buttons[] = {
{ /* USER PUSH BUTTON */
.code = KEY_ENTER,
.gpio = AT91_PIN_PB10,
.active_low = 1,
.desc = "user_pb",
.wakeup = 1,
}
};
static struct gpio_keys_platform_data ek_button_data = {
.buttons = ek_buttons,
.nbuttons = ARRAY_SIZE(ek_buttons),
};
static struct platform_device ek_button_device = {
.name = "gpio-keys",
.id = -1,
.num_resources = 0,
.dev = {
.platform_data = &ek_button_data,
}
};
static void __init ek_add_device_buttons(void)
{
at91_set_GPIO_periph(AT91_PIN_PB10, 1); /* user push button, pull up enabled */
at91_set_deglitch(AT91_PIN_PB10, 1);
platform_device_register(&ek_button_device);
}
#else
static void __init ek_add_device_buttons(void) {}
#endif
/*
* LEDs
*/
static struct gpio_led ek_leds[] = {
{ /* user_led (green) */
.name = "user_led",
.gpio = AT91_PIN_PB21,
.active_low = 1,
.default_trigger = "heartbeat",
}
};
static struct i2c_board_info __initdata ek_i2c_devices[] = {
{
I2C_BOARD_INFO("rv3029c2", 0x56),
},
};
static void __init ek_add_device_leds(void)
{
if (machine_is_usb_a9260() || machine_is_usb_a9g20())
ek_leds[0].active_low = 0;
at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
}
static void __init ek_board_init(void)
{
/* Serial */
/* DBGU on ttyS0. (Rx & Tx only) */
at91_register_uart(0, 0, 0);
at91_add_device_serial();
/* USB Host */
at91_add_device_usbh(&ek_usbh_data);
/* USB Device */
ek_add_device_udc();
/* SPI */
ek_add_device_spi();
/* Ethernet */
ek_add_device_eth();
/* NAND */
ek_add_device_nand();
/* Push Buttons */
ek_add_device_buttons();
/* LEDs */
ek_add_device_leds();
if (machine_is_usb_a9g20()) {
/* I2C */
at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
} else {
/* I2C */
at91_add_device_i2c(NULL, 0);
/* shutdown controller, wakeup button (5 msec low) */
at91_shdwc_write(AT91_SHDW_MR, AT91_SHDW_CPTWK0_(10)
| AT91_SHDW_WKMODE0_LOW
| AT91_SHDW_RTTWKEN);
}
}
MACHINE_START(USB_A9263, "CALAO USB_A9263")
/* Maintainer: calao-systems */
.init_time = at91sam926x_pit_init,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = ek_init_early,
.init_irq = at91_init_irq_default,
.init_machine = ek_board_init,
MACHINE_END
MACHINE_START(USB_A9260, "CALAO USB_A9260")
/* Maintainer: calao-systems */
.init_time = at91sam926x_pit_init,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = ek_init_early,
.init_irq = at91_init_irq_default,
.init_machine = ek_board_init,
MACHINE_END
MACHINE_START(USB_A9G20, "CALAO USB_A92G0")
/* Maintainer: Jean-Christophe PLAGNIOL-VILLARD */
.init_time = at91sam926x_pit_init,
.map_io = at91_map_io,
.handle_irq = at91_aic_handle_irq,
.init_early = ek_init_early,
.init_irq = at91_init_irq_default,
.init_machine = ek_board_init,
MACHINE_END