/*
* linux/arch/arm/mach-at91/board-sam9261ek.c
*
* Copyright (C) 2005 SAN People
* Copyright (C) 2006 Atmel
*
* 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/spi/ads7846.h>
#include <linux/dm9000.h>
#include <asm/hardware.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 <asm/arch/board.h>
#include <asm/arch/gpio.h>
#include <asm/arch/at91sam926x_mc.h>
#include "generic.h"
/*
* Serial port configuration.
* 0 .. 2 = USART0 .. USART2
* 3 = DBGU
*/
static struct at91_uart_config __initdata ek_uart_config = {
.console_tty = 0, /* ttyS0 */
.nr_tty = 1,
.tty_map = { 3, -1, -1, -1 } /* ttyS0, ..., ttyS3 */
};
static void __init ek_map_io(void)
{
/* Initialize processor: 18.432 MHz crystal */
at91sam9261_initialize(18432000);
/* Setup the LEDs */
at91_init_leds(AT91_PIN_PA13, AT91_PIN_PA14);
/* Setup the serial ports and console */
at91_init_serial(&ek_uart_config);
}
static void __init ek_init_irq(void)
{
at91sam9261_init_interrupts(NULL);
}
/*
* DM9000 ethernet device
*/
#if defined(CONFIG_DM9000)
static struct resource at91sam9261_dm9000_resource[] = {
[0] = {
.start = AT91_CHIPSELECT_2,
.end = AT91_CHIPSELECT_2 + 3,
.flags = IORESOURCE_MEM
},
[1] = {
.start = AT91_CHIPSELECT_2 + 0x44,
.end = AT91_CHIPSELECT_2 + 0xFF,
.flags = IORESOURCE_MEM
},
[2] = {
.start = AT91_PIN_PC11,
.end = AT91_PIN_PC11,
.flags = IORESOURCE_IRQ
}
};
static struct dm9000_plat_data dm9000_platdata = {
.flags = DM9000_PLATF_16BITONLY,
};
static struct platform_device at91sam9261_dm9000_device = {
.name = "dm9000",
.id = 0,
.num_resources = ARRAY_SIZE(at91sam9261_dm9000_resource),
.resource = at91sam9261_dm9000_resource,
.dev = {
.platform_data = &dm9000_platdata,
}
};
static void __init ek_add_device_dm9000(void)
{
/*
* Configure Chip-Select 2 on SMC for the DM9000.
* Note: These timings were calculated for MASTER_CLOCK = 100000000
* according to the DM9000 timings.
*/
at91_sys_write(AT91_SMC_SETUP(2), AT91_SMC_NWESETUP_(2) | AT91_SMC_NCS_WRSETUP_(0) | AT91_SMC_NRDSETUP_(2) | AT91_SMC_NCS_RDSETUP_(0));
at91_sys_write(AT91_SMC_PULSE(2), AT91_SMC_NWEPULSE_(4) | AT91_SMC_NCS_WRPULSE_(8) | AT91_SMC_NRDPULSE_(4) | AT91_SMC_NCS_RDPULSE_(8));
at91_sys_write(AT91_SMC_CYCLE(2), AT91_SMC_NWECYCLE_(16) | AT91_SMC_NRDCYCLE_(16));
at91_sys_write(AT91_SMC_MODE(2), AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE | AT91_SMC_DBW_16 | AT91_SMC_TDF_(1));
/* Configure Reset signal as output */
at91_set_gpio_output(AT91_PIN_PC10, 0);
/* Configure Interrupt pin as input, no pull-up */
at91_set_gpio_input(AT91_PIN_PC11, 0);
platform_device_register(&at91sam9261_dm9000_device);
}
#else
static void __init ek_add_device_dm9000(void) {}
#endif /* CONFIG_DM9000 */
/*
* USB Host Port
*/
static struct at91_usbh_data __initdata ek_usbh_data = {
.ports = 2,
};
/*
* USB Device Port
*/
static struct at91_udc_data __initdata ek_udc_data = {
.vbus_pin = AT91_PIN_PB29,
.pullup_pin = 0, /* pull-up driven by UDC */
};
/*
* MCI (SD/MMC)
*/
static struct at91_mmc_data __initdata ek_mmc_data = {
.wire4 = 1,
// .det_pin = ... not connected
// .wp_pin = ... not connected
// .vcc_pin = ... not connected
};
/*
* NAND flash
*/
static struct mtd_partition __initdata ek_nand_partition[] = {
{
.name = "Partition 1",
.offset = 0,
.size = 256 * 1024,
},
{
.name = "Partition 2",
.offset = 256 * 1024 ,
.size = MTDPART_SIZ_FULL,
},
};
static struct mtd_partition *nand_partitions(int size, int *num_partitions)
{
*num_partitions = ARRAY_SIZE(ek_nand_partition);
return ek_nand_partition;
}
static struct at91_nand_data __initdata ek_nand_data = {
.ale = 22,
.cle = 21,
// .det_pin = ... not connected
.rdy_pin = AT91_PIN_PC15,
.enable_pin = AT91_PIN_PC14,
.partition_info = nand_partitions,
#if defined(CONFIG_MTD_NAND_AT91_BUSWIDTH_16)
.bus_width_16 = 1,
#else
.bus_width_16 = 0,
#endif
};
/*
* 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_PC2); /* 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_PC2, 1); /* External IRQ0, with pullup */
at91_set_gpio_input(AT91_PIN_PA11, 1); /* Touchscreen BUSY signal */
}
#else
static void __init ek_add_device_ts(void) {}
#endif
/*
* SPI devices
*/
static struct spi_board_info ek_spi_devices[] = {
{ /* DataFlash chip */
.modalias = "mtd_dataflash",
.chip_select = 0,
.max_speed_hz = 15 * 1000 * 1000,
.bus_num = 0,
},
#if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
{
.modalias = "ads7846",
.chip_select = 2,
.max_speed_hz = 125000 * 26, /* (max sample rate @ 3V) * (cmd + data + overhead) */
.bus_num = 0,
.platform_data = &ads_info,
.irq = AT91SAM9261_ID_IRQ0,
},
#endif
#if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
{ /* DataFlash card - jumper (J12) configurable to CS3 or CS0 */
.modalias = "mtd_dataflash",
.chip_select = 3,
.max_speed_hz = 15 * 1000 * 1000,
.bus_num = 0,
},
#elif defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
{ /* AT73C213 DAC */
.modalias = "at73c213",
.chip_select = 3,
.max_speed_hz = 10 * 1000 * 1000,
.bus_num = 0,
},
#endif
};
static void __init ek_board_init(void)
{
/* Serial */
at91_add_device_serial();
/* USB Host */
at91_add_device_usbh(&ek_usbh_data);
/* USB Device */
at91_add_device_udc(&ek_udc_data);
/* I2C */
at91_add_device_i2c();
/* NAND */
at91_add_device_nand(&ek_nand_data);
/* DM9000 ethernet */
ek_add_device_dm9000();
/* spi0 and mmc/sd share the same PIO pins */
#if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
/* SPI */
at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
/* Touchscreen */
ek_add_device_ts();
#else
/* MMC */
at91_add_device_mmc(0, &ek_mmc_data);
#endif
}
MACHINE_START(AT91SAM9261EK, "Atmel AT91SAM9261-EK")
/* Maintainer: Atmel */
.phys_io = AT91_BASE_SYS,
.io_pg_offst = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
.boot_params = AT91_SDRAM_BASE + 0x100,
.timer = &at91sam926x_timer,
.map_io = ek_map_io,
.init_irq = ek_init_irq,
.init_machine = ek_board_init,
MACHINE_END
