mirror of
https://github.com/torvalds/linux.git
synced 2024-11-16 09:02:00 +00:00
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>
150 lines
3.8 KiB
C
150 lines
3.8 KiB
C
/*
|
|
* linux/arch/arm/mach-at91/board-carmeva.c
|
|
*
|
|
* Copyright (c) 2005 Peer Georgi
|
|
* Conitec Datasystems
|
|
*
|
|
* 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 <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 carmeva_uart_config = {
|
|
.console_tty = 0, /* ttyS0 */
|
|
.nr_tty = 2,
|
|
.tty_map = { 4, 1, -1, -1, -1 } /* ttyS0, ..., ttyS4 */
|
|
};
|
|
|
|
static void __init carmeva_map_io(void)
|
|
{
|
|
/* Initialize processor: 20.000 MHz crystal */
|
|
at91rm9200_initialize(20000000, AT91RM9200_BGA);
|
|
|
|
/* Setup the serial ports and console */
|
|
at91_init_serial(&carmeva_uart_config);
|
|
}
|
|
|
|
static void __init carmeva_init_irq(void)
|
|
{
|
|
at91rm9200_init_interrupts(NULL);
|
|
}
|
|
|
|
static struct at91_eth_data __initdata carmeva_eth_data = {
|
|
.phy_irq_pin = AT91_PIN_PC4,
|
|
.is_rmii = 1,
|
|
};
|
|
|
|
static struct at91_usbh_data __initdata carmeva_usbh_data = {
|
|
.ports = 2,
|
|
};
|
|
|
|
static struct at91_udc_data __initdata carmeva_udc_data = {
|
|
.vbus_pin = AT91_PIN_PD12,
|
|
.pullup_pin = AT91_PIN_PD9,
|
|
};
|
|
|
|
/* FIXME: user dependant */
|
|
// static struct at91_cf_data __initdata carmeva_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 carmeva_mmc_data = {
|
|
.slot_b = 0,
|
|
.wire4 = 1,
|
|
.det_pin = AT91_PIN_PB10,
|
|
.wp_pin = AT91_PIN_PC14,
|
|
};
|
|
|
|
static struct spi_board_info carmeva_spi_devices[] = {
|
|
{ /* DataFlash chip */
|
|
.modalias = "mtd_dataflash",
|
|
.chip_select = 0,
|
|
.max_speed_hz = 10 * 1000 * 1000,
|
|
},
|
|
{ /* User accessible spi - cs1 (250KHz) */
|
|
.modalias = "spi-cs1",
|
|
.chip_select = 1,
|
|
.max_speed_hz = 250 * 1000,
|
|
},
|
|
{ /* User accessible spi - cs2 (1MHz) */
|
|
.modalias = "spi-cs2",
|
|
.chip_select = 2,
|
|
.max_speed_hz = 1 * 1000 * 1000,
|
|
},
|
|
{ /* User accessible spi - cs3 (10MHz) */
|
|
.modalias = "spi-cs3",
|
|
.chip_select = 3,
|
|
.max_speed_hz = 10 * 1000 * 1000,
|
|
},
|
|
};
|
|
|
|
static void __init carmeva_board_init(void)
|
|
{
|
|
/* Serial */
|
|
at91_add_device_serial();
|
|
/* Ethernet */
|
|
at91_add_device_eth(&carmeva_eth_data);
|
|
/* USB Host */
|
|
at91_add_device_usbh(&carmeva_usbh_data);
|
|
/* USB Device */
|
|
at91_add_device_udc(&carmeva_udc_data);
|
|
/* I2C */
|
|
at91_add_device_i2c(NULL, 0);
|
|
/* SPI */
|
|
at91_add_device_spi(carmeva_spi_devices, ARRAY_SIZE(carmeva_spi_devices));
|
|
/* Compact Flash */
|
|
// at91_add_device_cf(&carmeva_cf_data);
|
|
/* MMC */
|
|
at91_add_device_mmc(0, &carmeva_mmc_data);
|
|
}
|
|
|
|
MACHINE_START(CARMEVA, "Carmeva")
|
|
/* Maintainer: Conitec Datasystems */
|
|
.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 = carmeva_map_io,
|
|
.init_irq = carmeva_init_irq,
|
|
.init_machine = carmeva_board_init,
|
|
MACHINE_END
|