forked from luck/tmp_suning_uos_patched
f230d3f53d
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>
132 lines
3.3 KiB
C
132 lines
3.3 KiB
C
/*
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* linux/arch/arm/mach-at91/board-eb9200.c
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*
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* Copyright (C) 2005 SAN People, adapted for ATEB9200 from Embest
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* by Andrew Patrikalakis
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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/device.h>
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#include <asm/hardware.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 <asm/arch/board.h>
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#include <asm/arch/gpio.h>
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#include "generic.h"
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/*
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* Serial port configuration.
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* 0 .. 3 = USART0 .. USART3
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* 4 = DBGU
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*/
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static struct at91_uart_config __initdata eb9200_uart_config = {
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.console_tty = 0, /* ttyS0 */
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.nr_tty = 2,
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.tty_map = { 4, 1, -1, -1, -1 } /* ttyS0, ..., ttyS4 */
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};
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static void __init eb9200_map_io(void)
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{
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/* Initialize processor: 18.432 MHz crystal */
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at91rm9200_initialize(18432000, AT91RM9200_BGA);
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/* Setup the serial ports and console */
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at91_init_serial(&eb9200_uart_config);
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}
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static void __init eb9200_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 eb9200_eth_data = {
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.phy_irq_pin = AT91_PIN_PC4,
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.is_rmii = 1,
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};
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static struct at91_usbh_data __initdata eb9200_usbh_data = {
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.ports = 2,
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};
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static struct at91_udc_data __initdata eb9200_udc_data = {
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.vbus_pin = AT91_PIN_PD4,
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.pullup_pin = AT91_PIN_PD5,
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};
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static struct at91_cf_data __initdata eb9200_cf_data = {
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.det_pin = AT91_PIN_PB0,
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.rst_pin = AT91_PIN_PC5,
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// .irq_pin = ... not connected
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// .vcc_pin = ... always powered
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};
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static struct at91_mmc_data __initdata eb9200_mmc_data = {
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.slot_b = 0,
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.wire4 = 1,
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};
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static struct i2c_board_info __initdata eb9200_i2c_devices[] = {
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{
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I2C_BOARD_INFO("at24c", 0x50),
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.type = "24c512",
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},
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};
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static void __init eb9200_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(&eb9200_eth_data);
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/* USB Host */
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at91_add_device_usbh(&eb9200_usbh_data);
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/* USB Device */
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at91_add_device_udc(&eb9200_udc_data);
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/* I2C */
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at91_add_device_i2c(eb9200_i2c_devices, ARRAY_SIZE(eb9200_i2c_devices));
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/* Compact Flash */
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at91_add_device_cf(&eb9200_cf_data);
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/* SPI */
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at91_add_device_spi(NULL, 0);
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/* MMC */
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/* only supports 1 or 4 bit interface, not wired through to SPI */
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at91_add_device_mmc(0, &eb9200_mmc_data);
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}
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MACHINE_START(ATEB9200, "Embest ATEB9200")
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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 = eb9200_map_io,
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.init_irq = eb9200_init_irq,
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.init_machine = eb9200_board_init,
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MACHINE_END
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