75d3521377
In order to initialize the serial console early, the atmel_serial driver had to do a hack where it compared the physical address of the port with an address known to be permanently mapped, and used it as a virtual address. This got around the limitation that ioremap() isn't always available when the console is being initalized. This patch removes that hack and replaces it with a new "regs" field in struct atmel_uart_data that the board-specific code can initialize to a fixed virtual mapping for platform devices where this is possible. It also initializes the DBGU's regs field with the address the driver used to check against. On AVR32, the "regs" field is initialized from the physical base address when this it can be accessed through a permanently 1:1 mapped segment, i.e. the P4 segment. If regs is NULL, the console initialization is delayed until the "real" driver is up and running and ioremap() can be used. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
116 lines
3.6 KiB
C
116 lines
3.6 KiB
C
/*
|
|
* include/asm-arm/arch-at91rm9200/board.h
|
|
*
|
|
* Copyright (C) 2005 HP Labs
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/*
|
|
* These are data structures found in platform_device.dev.platform_data,
|
|
* and describing board-specific data needed by drivers. For example,
|
|
* which pin is used for a given GPIO role.
|
|
*
|
|
* In 2.6, drivers should strongly avoid board-specific knowledge so
|
|
* that supporting new boards normally won't require driver patches.
|
|
* Most board-specific knowledge should be in arch/.../board-*.c files.
|
|
*/
|
|
|
|
#ifndef __ASM_ARCH_BOARD_H
|
|
#define __ASM_ARCH_BOARD_H
|
|
|
|
#include <linux/mtd/partitions.h>
|
|
#include <linux/device.h>
|
|
#include <linux/spi/spi.h>
|
|
|
|
/* USB Device */
|
|
struct at91_udc_data {
|
|
u8 vbus_pin; /* high == host powering us */
|
|
u8 pullup_pin; /* high == D+ pulled up */
|
|
};
|
|
extern void __init at91_add_device_udc(struct at91_udc_data *data);
|
|
|
|
/* Compact Flash */
|
|
struct at91_cf_data {
|
|
u8 irq_pin; /* I/O IRQ */
|
|
u8 det_pin; /* Card detect */
|
|
u8 vcc_pin; /* power switching */
|
|
u8 rst_pin; /* card reset */
|
|
};
|
|
extern void __init at91_add_device_cf(struct at91_cf_data *data);
|
|
|
|
/* MMC / SD */
|
|
struct at91_mmc_data {
|
|
u8 det_pin; /* card detect IRQ */
|
|
unsigned is_b:1; /* uses B side (vs A) */
|
|
unsigned wire4:1; /* (SD) supports DAT0..DAT3 */
|
|
u8 wp_pin; /* (SD) writeprotect detect */
|
|
u8 vcc_pin; /* power switching (high == on) */
|
|
};
|
|
extern void __init at91_add_device_mmc(struct at91_mmc_data *data);
|
|
|
|
/* Ethernet */
|
|
struct at91_eth_data {
|
|
u8 phy_irq_pin; /* PHY IRQ */
|
|
u8 is_rmii; /* using RMII interface? */
|
|
};
|
|
extern void __init at91_add_device_eth(struct at91_eth_data *data);
|
|
|
|
/* USB Host */
|
|
struct at91_usbh_data {
|
|
u8 ports; /* number of ports on root hub */
|
|
};
|
|
extern void __init at91_add_device_usbh(struct at91_usbh_data *data);
|
|
|
|
/* NAND / SmartMedia */
|
|
struct at91_nand_data {
|
|
u8 enable_pin; /* chip enable */
|
|
u8 det_pin; /* card detect */
|
|
u8 rdy_pin; /* ready/busy */
|
|
u8 ale; /* address line number connected to ALE */
|
|
u8 cle; /* address line number connected to CLE */
|
|
struct mtd_partition* (*partition_info)(int, int*);
|
|
};
|
|
extern void __init at91_add_device_nand(struct at91_nand_data *data);
|
|
|
|
/* I2C*/
|
|
extern void __init at91_add_device_i2c(void);
|
|
|
|
/* SPI */
|
|
extern void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices);
|
|
|
|
/* Serial */
|
|
struct at91_uart_config {
|
|
unsigned short console_tty; /* tty number of serial console */
|
|
unsigned short nr_tty; /* number of serial tty's */
|
|
short tty_map[]; /* map UART to tty number */
|
|
};
|
|
extern struct platform_device *atmel_default_console_device;
|
|
extern void __init at91_init_serial(struct at91_uart_config *config);
|
|
|
|
struct atmel_uart_data {
|
|
short use_dma_tx; /* use transmit DMA? */
|
|
short use_dma_rx; /* use receive DMA? */
|
|
void __iomem *regs; /* virtual base address, if any */
|
|
};
|
|
extern void __init at91_add_device_serial(void);
|
|
|
|
/* LEDs */
|
|
extern u8 at91_leds_cpu;
|
|
extern u8 at91_leds_timer;
|
|
extern void __init at91_init_leds(u8 cpu_led, u8 timer_led);
|
|
|
|
#endif
|