android_kernel_motorola_sm6225/arch/arm/mach-at91/board-eb9200.c
Andrew Victor f230d3f53d [ARM] 4650/1: AT91: New-style init of I2C, support for i2c-gpio
The AT91 I2C driver is currently marked as "broken" due to hardware
issues.  This patch enables AT91-based platforms to also use the
bitbanged GPIO for I2C.

This updates platform setup logic (setting up an i2c-gpio device
using the same pins as the i2c-at91 device, unless only the BROKEN
driver is enabled).

Also make use of the new-style initialization of I2C devices using
i2c_register_board_info().

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-11-26 19:40:47 +00:00

131 lines
3.3 KiB
C

/*
* linux/arch/arm/mach-at91/board-eb9200.c
*
* Copyright (C) 2005 SAN People, adapted for ATEB9200 from Embest
* by Andrew Patrikalakis
*
* 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/device.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 "generic.h"
/*
* Serial port configuration.
* 0 .. 3 = USART0 .. USART3
* 4 = DBGU
*/
static struct at91_uart_config __initdata eb9200_uart_config = {
.console_tty = 0, /* ttyS0 */
.nr_tty = 2,
.tty_map = { 4, 1, -1, -1, -1 } /* ttyS0, ..., ttyS4 */
};
static void __init eb9200_map_io(void)
{
/* Initialize processor: 18.432 MHz crystal */
at91rm9200_initialize(18432000, AT91RM9200_BGA);
/* Setup the serial ports and console */
at91_init_serial(&eb9200_uart_config);
}
static void __init eb9200_init_irq(void)
{
at91rm9200_init_interrupts(NULL);
}
static struct at91_eth_data __initdata eb9200_eth_data = {
.phy_irq_pin = AT91_PIN_PC4,
.is_rmii = 1,
};
static struct at91_usbh_data __initdata eb9200_usbh_data = {
.ports = 2,
};
static struct at91_udc_data __initdata eb9200_udc_data = {
.vbus_pin = AT91_PIN_PD4,
.pullup_pin = AT91_PIN_PD5,
};
static struct at91_cf_data __initdata eb9200_cf_data = {
.det_pin = AT91_PIN_PB0,
.rst_pin = AT91_PIN_PC5,
// .irq_pin = ... not connected
// .vcc_pin = ... always powered
};
static struct at91_mmc_data __initdata eb9200_mmc_data = {
.slot_b = 0,
.wire4 = 1,
};
static struct i2c_board_info __initdata eb9200_i2c_devices[] = {
{
I2C_BOARD_INFO("at24c", 0x50),
.type = "24c512",
},
};
static void __init eb9200_board_init(void)
{
/* Serial */
at91_add_device_serial();
/* Ethernet */
at91_add_device_eth(&eb9200_eth_data);
/* USB Host */
at91_add_device_usbh(&eb9200_usbh_data);
/* USB Device */
at91_add_device_udc(&eb9200_udc_data);
/* I2C */
at91_add_device_i2c(eb9200_i2c_devices, ARRAY_SIZE(eb9200_i2c_devices));
/* Compact Flash */
at91_add_device_cf(&eb9200_cf_data);
/* SPI */
at91_add_device_spi(NULL, 0);
/* MMC */
/* only supports 1 or 4 bit interface, not wired through to SPI */
at91_add_device_mmc(0, &eb9200_mmc_data);
}
MACHINE_START(ATEB9200, "Embest ATEB9200")
.phys_io = AT91_BASE_SYS,
.io_pg_offst = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
.boot_params = AT91_SDRAM_BASE + 0x100,
.timer = &at91rm9200_timer,
.map_io = eb9200_map_io,
.init_irq = eb9200_init_irq,
.init_machine = eb9200_board_init,
MACHINE_END