127 lines
3.2 KiB
C
127 lines
3.2 KiB
C
|
/*
|
||
|
|
* include/asm-arm/arch-ixp4xx/platform.h
|
||
|
|
*
|
||
|
|
* Constants and functions that are useful to IXP4xx platform-specific code
|
||
|
|
* and device drivers.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2004 MontaVista Software, Inc.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __ASM_ARCH_HARDWARE_H__
|
||
|
|
#error "Do not include this directly, instead #include <asm/hardware.h>"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef __ASSEMBLY__
|
||
|
|
|
||
|
|
#include <asm/types.h>
|
||
|
|
|
||
|
|
#ifndef __ARMEB__
|
||
|
|
#define REG_OFFSET 0
|
||
|
|
#else
|
||
|
|
#define REG_OFFSET 3
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Expansion bus memory regions
|
||
|
|
*/
|
||
|
|
#define IXP4XX_EXP_BUS_BASE_PHYS (0x50000000)
|
||
|
|
|
||
|
|
#define IXP4XX_EXP_BUS_CSX_REGION_SIZE (0x01000000)
|
||
|
|
|
||
|
|
#define IXP4XX_EXP_BUS_CS0_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x00000000)
|
||
|
|
#define IXP4XX_EXP_BUS_CS1_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x01000000)
|
||
|
|
#define IXP4XX_EXP_BUS_CS2_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x02000000)
|
||
|
|
#define IXP4XX_EXP_BUS_CS3_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x03000000)
|
||
|
|
#define IXP4XX_EXP_BUS_CS4_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x04000000)
|
||
|
|
#define IXP4XX_EXP_BUS_CS5_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x05000000)
|
||
|
|
#define IXP4XX_EXP_BUS_CS6_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x06000000)
|
||
|
|
#define IXP4XX_EXP_BUS_CS7_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x07000000)
|
||
|
|
|
||
|
|
#define IXP4XX_FLASH_WRITABLE (0x2)
|
||
|
|
#define IXP4XX_FLASH_DEFAULT (0xbcd23c40)
|
||
|
|
#define IXP4XX_FLASH_WRITE (0xbcd23c42)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Clock Speed Definitions.
|
||
|
|
*/
|
||
|
|
#define IXP4XX_PERIPHERAL_BUS_CLOCK (66) /* 66Mhzi APB BUS */
|
||
|
|
#define IXP4XX_UART_XTAL 14745600
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The IXP4xx chips do not have an I2C unit, so GPIO lines are just
|
||
|
|
* used to
|
||
|
|
* Used as platform_data to provide GPIO pin information to the ixp42x
|
||
|
|
* I2C driver.
|
||
|
|
*/
|
||
|
|
struct ixp4xx_i2c_pins {
|
||
|
|
unsigned long sda_pin;
|
||
|
|
unsigned long scl_pin;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
struct sys_timer;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Functions used by platform-level setup code
|
||
|
|
*/
|
||
|
|
extern void ixp4xx_map_io(void);
|
||
|
|
extern void ixp4xx_init_irq(void);
|
||
|
|
extern void ixp4xx_sys_init(void);
|
||
|
|
extern struct sys_timer ixp4xx_timer;
|
||
|
|
extern void ixp4xx_pci_preinit(void);
|
||
|
|
struct pci_sys_data;
|
||
|
|
extern int ixp4xx_setup(int nr, struct pci_sys_data *sys);
|
||
|
|
extern struct pci_bus *ixp4xx_scan_bus(int nr, struct pci_sys_data *sys);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* GPIO-functions
|
||
|
|
*/
|
||
|
|
/*
|
||
|
|
* The following converted to the real HW bits the gpio_line_config
|
||
|
|
*/
|
||
|
|
/* GPIO pin types */
|
||
|
|
#define IXP4XX_GPIO_OUT 0x1
|
||
|
|
#define IXP4XX_GPIO_IN 0x2
|
||
|
|
|
||
|
|
#define IXP4XX_GPIO_INTSTYLE_MASK 0x7C /* Bits [6:2] define interrupt style */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* GPIO interrupt types.
|
||
|
|
*/
|
||
|
|
#define IXP4XX_GPIO_ACTIVE_HIGH 0x4 /* Default */
|
||
|
|
#define IXP4XX_GPIO_ACTIVE_LOW 0x8
|
||
|
|
#define IXP4XX_GPIO_RISING_EDGE 0x10
|
||
|
|
#define IXP4XX_GPIO_FALLING_EDGE 0x20
|
||
|
|
#define IXP4XX_GPIO_TRANSITIONAL 0x40
|
||
|
|
|
||
|
|
/* GPIO signal types */
|
||
|
|
#define IXP4XX_GPIO_LOW 0
|
||
|
|
#define IXP4XX_GPIO_HIGH 1
|
||
|
|
|
||
|
|
/* GPIO Clocks */
|
||
|
|
#define IXP4XX_GPIO_CLK_0 14
|
||
|
|
#define IXP4XX_GPIO_CLK_1 15
|
||
|
|
|
||
|
|
extern void gpio_line_config(u8 line, u32 style);
|
||
|
|
|
||
|
|
static inline void gpio_line_get(u8 line, int *value)
|
||
|
|
{
|
||
|
|
*value = (*IXP4XX_GPIO_GPINR >> line) & 0x1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void gpio_line_set(u8 line, int value)
|
||
|
|
{
|
||
|
|
if (value == IXP4XX_GPIO_HIGH)
|
||
|
|
*IXP4XX_GPIO_GPOUTR |= (1 << line);
|
||
|
|
else if (value == IXP4XX_GPIO_LOW)
|
||
|
|
*IXP4XX_GPIO_GPOUTR &= ~(1 << line);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void gpio_line_isr_clear(u8 line)
|
||
|
|
{
|
||
|
|
*IXP4XX_GPIO_GPISR = (1 << line);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // __ASSEMBLY__
|
||
|
|
|