[mirror_ubuntu-bionic-kernel.git] / include / asm-arm / arch-ixp4xx / platform.h

/*
 * 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

/* 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

static inline void gpio_line_config(u8 line, u32 direction)
{
	if (direction == IXP4XX_GPIO_OUT)
		*IXP4XX_GPIO_GPOER |= (1 << line);
	else
		*IXP4XX_GPIO_GPOER &= ~(1 << line);
}

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__
Commit	Line	Data
1da177e4 LT	1	/*
	2	* include/asm-arm/arch-ixp4xx/platform.h
	3	*
	4	* Constants and functions that are useful to IXP4xx platform-specific code
	5	* and device drivers.
	6	*
	7	* Copyright (C) 2004 MontaVista Software, Inc.
	8	*/
	9
	10	#ifndef __ASM_ARCH_HARDWARE_H__
	11	#error "Do not include this directly, instead #include <asm/hardware.h>"
	12	#endif
	13
	14	#ifndef __ASSEMBLY__
	15
	16	#include <asm/types.h>
	17
	18	#ifndef __ARMEB__
	19	#define REG_OFFSET 0
	20	#else
	21	#define REG_OFFSET 3
	22	#endif
	23
	24	/*
	25	* Expansion bus memory regions
	26	*/
	27	#define IXP4XX_EXP_BUS_BASE_PHYS (0x50000000)
	28
	29	#define IXP4XX_EXP_BUS_CSX_REGION_SIZE (0x01000000)
	30
	31	#define IXP4XX_EXP_BUS_CS0_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x00000000)
	32	#define IXP4XX_EXP_BUS_CS1_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x01000000)
	33	#define IXP4XX_EXP_BUS_CS2_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x02000000)
	34	#define IXP4XX_EXP_BUS_CS3_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x03000000)
	35	#define IXP4XX_EXP_BUS_CS4_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x04000000)
	36	#define IXP4XX_EXP_BUS_CS5_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x05000000)
	37	#define IXP4XX_EXP_BUS_CS6_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x06000000)
	38	#define IXP4XX_EXP_BUS_CS7_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x07000000)
	39
	40	#define IXP4XX_FLASH_WRITABLE (0x2)
	41	#define IXP4XX_FLASH_DEFAULT (0xbcd23c40)
	42	#define IXP4XX_FLASH_WRITE (0xbcd23c42)
	43
	44	/*
	45	* Clock Speed Definitions.
	46	*/
	47	#define IXP4XX_PERIPHERAL_BUS_CLOCK (66) /* 66Mhzi APB BUS */
	48	#define IXP4XX_UART_XTAL 14745600
	49
	50	/*
	51	* The IXP4xx chips do not have an I2C unit, so GPIO lines are just
	52	* used to
	53	* Used as platform_data to provide GPIO pin information to the ixp42x
	54	* I2C driver.
	55	*/
	56	struct ixp4xx_i2c_pins {
	57	unsigned long sda_pin;
	58	unsigned long scl_pin;
	59	};
	60
	61
	62	struct sys_timer;
	63
	64	/*
65	* Functions used by platform-level setup code
66	*/
67	extern void ixp4xx_map_io(void);
68	extern void ixp4xx_init_irq(void);
69	extern void ixp4xx_sys_init(void);
70	extern struct sys_timer ixp4xx_timer;
71	extern void ixp4xx_pci_preinit(void);
72	struct pci_sys_data;
73	extern int ixp4xx_setup(int nr, struct pci_sys_data *sys);
74	extern struct pci_bus ixp4xx_scan_bus(int nr, struct pci_sys_data sys);
75
76	/*
77	* GPIO-functions
78	*/
79	/*
80	* The following converted to the real HW bits the gpio_line_config
81	*/
82	/* GPIO pin types */
83	#define IXP4XX_GPIO_OUT 0x1
84	#define IXP4XX_GPIO_IN 0x2
85
1da177e4 LT	86	/* GPIO signal types */
	87	#define IXP4XX_GPIO_LOW 0
	88	#define IXP4XX_GPIO_HIGH 1
	89
	90	/* GPIO Clocks */
	91	#define IXP4XX_GPIO_CLK_0 14
	92	#define IXP4XX_GPIO_CLK_1 15
	93
bdf82b59 DS	94	static inline void gpio_line_config(u8 line, u32 direction)
	95	{
	96	if (direction == IXP4XX_GPIO_OUT)
	97	*IXP4XX_GPIO_GPOER \|= (1 << line);
	98	else
	99	*IXP4XX_GPIO_GPOER &= ~(1 << line);
	100	}
1da177e4 LT	101
	102	static inline void gpio_line_get(u8 line, int *value)
	103	{
	104	value = (IXP4XX_GPIO_GPINR >> line) & 0x1;
	105	}
	106
	107	static inline void gpio_line_set(u8 line, int value)
	108	{
	109	if (value == IXP4XX_GPIO_HIGH)
	110	*IXP4XX_GPIO_GPOUTR \|= (1 << line);
	111	else if (value == IXP4XX_GPIO_LOW)
	112	*IXP4XX_GPIO_GPOUTR &= ~(1 << line);
	113	}
	114
	115	static inline void gpio_line_isr_clear(u8 line)
	116	{
	117	*IXP4XX_GPIO_GPISR = (1 << line);
	118	}
	119
	120	#endif // __ASSEMBLY__
	121