- 根目录:
- arch
- arm
- mach-at91
- board-sam9263ek.c
/*
* linux/arch/arm/mach-at91/board-sam9263ek.c
*
* Copyright (C) 2005 SAN People
* Copyright (C) 2007 Atmel Corporation.
*
* 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/gpio.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/spi/ads7846.h>
#include <linux/platform_data/at24.h>
#include <linux/fb.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/leds.h>
#include <linux/pwm.h>
#include <linux/leds_pwm.h>
#include <video/atmel_lcdc.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 <mach/system_rev.h>
#include "at91_aic.h"
#include "board.h"
#include "sam9_smc.h"
#include "generic.h"
#include "gpio.h"
static void __init ek_init_early(void)
{
/* Initialize processor: 16.367 MHz crystal */
at91_initialize(16367660);
}
/*
* USB Host port
*/
static struct at91_usbh_data __initdata ek_usbh_data = {
.ports = 2,
.vbus_pin = { AT91_PIN_PA24, AT91_PIN_PA21 },
.vbus_pin_active_low = {1, 1},
.overcurrent_pin= {-EINVAL, -EINVAL},
};
/*
* USB Device port
*/
static struct at91_udc_data __initdata ek_udc_data = {
.vbus_pin = AT91_PIN_PA25,
.pullup_pin = -EINVAL, /* pull-up driven by UDC */
};
/*
* ADS7846 Touchscreen
*/
#if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
static int ads7843_pendown_state(void)
{
return !at91_get_gpio_value(AT91_PIN_PA15); /* Touchscreen PENIRQ */
}
static struct ads7846_platform_data ads_info = {
.model = 7843,
.x_min = 150,
.x_max = 3830,
.y_min = 190,
.y_max = 3830,
.vref_delay_usecs = 100,
.x_plate_ohms = 450,
.y_plate_ohms = 250,
.pressure_max = 15000,
.debounce_max = 1,
.debounce_rep = 0,
.debounce_tol = (~0),
.get_pendown_state = ads7843_pendown_state,
};
static void __init ek_add_device_ts(void)
{
at91_set_B_periph(AT91_PIN_PA15, 1); /* External IRQ1, with pullup */
at91_set_gpio_input(AT91_PIN_PA31, 1); /* Touchscreen BUSY signal */
}
#else
static void __init ek_add_device_ts(void) {}
#endif
/*
* SPI devices.
*/
static struct spi_board_info ek_spi_devices[] = {
#if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
{ /* DataFlash card */
.modalias = "mtd_dataflash",
.chip_select = 0,
.max_speed_hz = 15 * 1000 * 1000,
.bus_num = 0,
},
#endif
#if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
{
.modalias = "ads7846",
.chip_select = 3,
.max_speed_hz = 125000 * 26, /* (max sample rate @ 3V) * (cmd + data + overhead) */
.bus_num = 0,
.platform_data = &ads_info,
.irq = NR_IRQS_LEGACY + AT91SAM9263_ID_IRQ1,
},
#endif
};
/*
* MCI (SD/MMC)
*/
static struct mci_platform_data __initdata mci1_data = {
.slot[0] = {
.bus_width = 4,
.detect_pin = AT91_PIN_PE18,
.wp_pin = AT91_PIN_PE19,
},
};
/*
* MACB Ethernet device
*/
static struct macb_platform_data __initdata ek_macb_data = {
.phy_irq_pin = AT91_PIN_PE31,
.is_rmii = 1,
};
/*
* NAND flash
*/
static struct mtd_partition __initdata ek_nand_partition[] = {
{
.name = "Partition 1",
.offset = 0,
.size = SZ_64M,
},
{
.name = "Partition 2",
.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 ek_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,
.tdf_cycles = 2,
};
static void __init ek_add_device_nand(void)
{
ek_nand_data.bus_width_16 = board_have_nand_16bit();
/* setup bus-width (8 or 16) */
if (ek_nand_data.bus_width_16)
ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
else
ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
/* configure chip-select 3 (NAND) */
sam9_smc_configure(0, 3, &ek_nand_smc_config);
at91_add_device_nand(&ek_nand_data);
}
/*
* I2C devices
*/
static struct at24_platform_data at24c512 = {
.byte_len = SZ_512K / 8,
.page_size = 128,
.flags = AT24_FLAG_ADDR16,
};
static struct i2c_board_info __initdata ek_i2c_devices[] = {
{
I2C_BOARD_INFO("24c512", 0x50),
.platform_data = &at24c512,
},
/* more devices can be added using expansion connectors */
};
/*
* LCD Controller
*/
#if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
static struct fb_videomode at91_tft_vga_modes[] = {
{
.name = "TX09D50VM1CCA @ 60",
.refresh = 60,
.xres = 240, .yres = 320,
.pixclock = KHZ2PICOS(4965),
.left_margin = 1, .right_margin = 33,
.upper_margin = 1, .lower_margin = 0,
.hsync_len = 5, .vsync_len = 1,
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED,
},
};
static struct fb_monspecs at91fb_default_monspecs = {
.manufacturer = "HIT",
.monitor = "TX09D70VM1CCA",
.modedb = at91_tft_vga_modes,
.modedb_len = ARRAY_SIZE(at91_tft_vga_modes),
.hfmin = 15000,
.hfmax = 64000,
.vfmin = 50,
.vfmax = 150,
};
#define AT91SAM9263_DEFAULT_LCDCON2 (ATMEL_LCDC_MEMOR_LITTLE \
| ATMEL_LCDC_DISTYPE_TFT \
| ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
static void at91_lcdc_power_control(struct atmel_lcdfb_pdata *pdata, int on)
{
at91_set_gpio_value(AT91_PIN_PA30, on);
}
/* Driver datas */
static struct atmel_lcdfb_pdata __initdata ek_lcdc_data = {
.lcdcon_is_backlight = true,
.default_bpp = 16,
.default_dmacon = ATMEL_LCDC_DMAEN,
.default_lcdcon2 = AT91SAM9263_DEFAULT_LCDCON2,
.default_monspecs = &at91fb_default_monspecs,
.atmel_lcdfb_power_control = at91_lcdc_power_control,
.guard_time = 1,
};
#else
static struct atmel_lcdfb_pdata __initdata ek_lcdc_data;
#endif
/*
* GPIO Buttons
*/
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
static struct gpio_keys_button ek_buttons[] = {
{ /* BP1, "leftclic" */
.code = BTN_LEFT,
.gpio = AT91_PIN_PC5,
.active_low = 1,
.desc = "left_click",
.wakeup = 1,
},
{ /* BP2, "rightclic" */
.code = BTN_RIGHT,
.gpio = AT91_PIN_PC4,
.active_low = 1,
.desc = "right_click",
.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_PC5, 1); /* left button */
at91_set_deglitch(AT91_PIN_PC5, 1);
at91_set_GPIO_periph(AT91_PIN_PC4, 1); /* right button */
at91_set_deglitch(AT91_PIN_PC4, 1);
platform_device_register(&ek_button_device);
}
#else
static void __init ek_add_device_buttons(void) {}
#endif
/*
* AC97
* reset_pin is not connected: NRST
*/
static struct ac97c_platform_data ek_ac97_data = {
.reset_pin = -EINVAL,
};
/*
* LEDs ... these could all be PWM-driven, for variable brightness
*/
static struct gpio_led ek_leds[] = {
{ /* "right" led, green, userled2 (could be driven by pwm2) */
.name = "ds2",
.gpio = AT91_PIN_PC29,
.active_low = 1,
.default_trigger = "nand-disk",
},
{ /* "power" led, yellow (could be driven by pwm0) */
.name = "ds3",
.gpio = AT91_PIN_PB7,
.default_trigger = "heartbeat",
},
#if !IS_ENABLED(CONFIG_LEDS_PWM)
{
.name = "ds1",
.gpio = AT91_PIN_PB8,
.active_low = 1,
.default_trigger = "none",
}
#endif
};
/*
* PWM Leds
*/
static struct pwm_lookup pwm_lookup[] = {
PWM_LOOKUP("at91sam9rl-pwm", 1, "leds_pwm", "ds1",
5000, PWM_POLARITY_INVERSED),
};
#if IS_ENABLED(CONFIG_LEDS_PWM)
static struct led_pwm pwm_leds[] = {
{
.name = "ds1",
.max_brightness = 255,
},
};
static struct led_pwm_platform_data pwm_data = {
.num_leds = ARRAY_SIZE(pwm_leds),
.leds = pwm_leds,
};
static struct platform_device leds_pwm = {
.name = "leds_pwm",
.id = -1,
.dev = {
.platform_data = &pwm_data,
},
};
#endif
/*
* CAN
*/
static void sam9263ek_transceiver_switch(int on)
{
if (on) {
at91_set_gpio_output(AT91_PIN_PA18, 1); /* CANRXEN */
at91_set_gpio_output(AT91_PIN_PA19, 0); /* CANRS */
} else {
at91_set_gpio_output(AT91_PIN_PA18, 0); /* CANRXEN */
at91_set_gpio_output(AT91_PIN_PA19, 1); /* CANRS */
}
}
static struct at91_can_data ek_can_data = {
.transceiver_switch = sam9263ek_transceiver_switch,
};
static struct platform_device *devices[] __initdata = {
#if IS_ENABLED(CONFIG_LEDS_PWM)
&leds_pwm,
#endif
};
static void __init ek_board_init(void)
{
at91_register_devices();
/* Serial */
/* DBGU on ttyS0. (Rx & Tx only) */
at91_register_uart(0, 0, 0);
/* USART0 on ttyS1. (Rx, Tx, RTS, CTS) */
at91_register_uart(AT91SAM9263_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS);
at91_add_device_serial();
/* USB Host */
at91_add_device_usbh(&ek_usbh_data);
/* USB Device */
at91_add_device_udc(&ek_udc_data);
/* SPI */
at91_set_gpio_output(AT91_PIN_PE20, 1); /* select spi0 clock */
at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
/* Touchscreen */
ek_add_device_ts();
/* MMC */
at91_add_device_mci(1, &mci1_data);
/* Ethernet */
at91_add_device_eth(&ek_macb_data);
/* NAND */
ek_add_device_nand();
/* I2C */
at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
/* LCD Controller */
at91_add_device_lcdc(&ek_lcdc_data);
/* Push Buttons */
ek_add_device_buttons();
/* AC97 */
at91_add_device_ac97(&ek_ac97_data);
/* LEDs */
at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup));
#if IS_ENABLED(CONFIG_LEDS_PWM)
at91_add_device_pwm(1 << AT91_PWM1);
#endif
/* CAN */
at91_add_device_can(&ek_can_data);
/* Other platform devices */
platform_add_devices(devices, ARRAY_SIZE(devices));
}
MACHINE_START(AT91SAM9263EK, "Atmel AT91SAM9263-EK")
/* Maintainer: Atmel */
.init_time = at91_init_time,
.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