linux/include/asm-arm/arch-pxa/mfp-pxa3xx.h
eric miao 7f7c8a6192 [ARM] pxa: make MFP configuration processor independent
There are two reasons for making the MFP configuration to be processor
independent, i.e. removing the relationship of configuration bits with
actual MFPR register settings:

   1. power management sometimes requires the MFP to be configured
      differently when in run mode or in low power mode

   2. for future integration of pxa{25x,27x} GPIO configurations

The modifications include:

1. introducing of processor independent MFP configuration bits, as
   defined in [include/asm-arm/arch-pxa/mfp.h]:

	bit  0.. 9 - MFP Pin Number (1024 Pins Maximum)
	bit 10..12 - Alternate Function Selection
	bit 13..15 - Drive Strength
	bit 16..18 - Low Power Mode State
	bit 19..20 - Low Power Mode Edge Detection
	bit 21..22 - Run Mode Pull State
	and so on,

2. moving the processor dependent code from mfp.h into mfp-pxa3xx.h

3. cleaning up of the MFPR bit definitions

4. mapping of processor independent MFP configuration into processor
   specific MFPR register settings is now totally encapsulated within
   pxa3xx_mfp_config()

5. using of "unsigned long" instead of invented type of "mfp_cfg_t"
   according to Documentation/CodingStyle Chapter 5, usage of this
   in platform code will be slowly removed in later patches

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-01-26 15:07:56 +00:00

253 lines
9.4 KiB
C

#ifndef __ASM_ARCH_MFP_PXA3XX_H
#define __ASM_ARCH_MFP_PXA3XX_H
#define MFPR_BASE (0x40e10000)
#define MFPR_SIZE (PAGE_SIZE)
/* MFPR register bit definitions */
#define MFPR_PULL_SEL (0x1 << 15)
#define MFPR_PULLUP_EN (0x1 << 14)
#define MFPR_PULLDOWN_EN (0x1 << 13)
#define MFPR_SLEEP_SEL (0x1 << 9)
#define MFPR_SLEEP_OE_N (0x1 << 7)
#define MFPR_EDGE_CLEAR (0x1 << 6)
#define MFPR_EDGE_FALL_EN (0x1 << 5)
#define MFPR_EDGE_RISE_EN (0x1 << 4)
#define MFPR_SLEEP_DATA(x) ((x) << 8)
#define MFPR_DRIVE(x) (((x) & 0x7) << 10)
#define MFPR_AF_SEL(x) (((x) & 0x7) << 0)
#define MFPR_EDGE_NONE (0)
#define MFPR_EDGE_RISE (MFPR_EDGE_RISE_EN)
#define MFPR_EDGE_FALL (MFPR_EDGE_FALL_EN)
#define MFPR_EDGE_BOTH (MFPR_EDGE_RISE | MFPR_EDGE_FALL)
/*
* Table that determines the low power modes outputs, with actual settings
* used in parentheses for don't-care values. Except for the float output,
* the configured driven and pulled levels match, so if there is a need for
* non-LPM pulled output, the same configuration could probably be used.
*
* Output value sleep_oe_n sleep_data pullup_en pulldown_en pull_sel
* (bit 7) (bit 8) (bit 14) (bit 13) (bit 15)
*
* Input 0 X(0) X(0) X(0) 0
* Drive 0 0 0 0 X(1) 0
* Drive 1 0 1 X(1) 0 0
* Pull hi (1) 1 X(1) 1 0 0
* Pull lo (0) 1 X(0) 0 1 0
* Z (float) 1 X(0) 0 0 0
*/
#define MFPR_LPM_INPUT (0)
#define MFPR_LPM_DRIVE_LOW (MFPR_SLEEP_DATA(0) | MFPR_PULLDOWN_EN)
#define MFPR_LPM_DRIVE_HIGH (MFPR_SLEEP_DATA(1) | MFPR_PULLUP_EN)
#define MFPR_LPM_PULL_LOW (MFPR_LPM_DRIVE_LOW | MFPR_SLEEP_OE_N)
#define MFPR_LPM_PULL_HIGH (MFPR_LPM_DRIVE_HIGH | MFPR_SLEEP_OE_N)
#define MFPR_LPM_FLOAT (MFPR_SLEEP_OE_N)
#define MFPR_LPM_MASK (0xe080)
/*
* The pullup and pulldown state of the MFP pin at run mode is by default
* determined by the selected alternate function. In case that some buggy
* devices need to override this default behavior, the definitions below
* indicates the setting of corresponding MFPR bits
*
* Definition pull_sel pullup_en pulldown_en
* MFPR_PULL_NONE 0 0 0
* MFPR_PULL_LOW 1 0 1
* MFPR_PULL_HIGH 1 1 0
* MFPR_PULL_BOTH 1 1 1
*/
#define MFPR_PULL_NONE (0)
#define MFPR_PULL_LOW (MFPR_PULL_SEL | MFPR_PULLDOWN_EN)
#define MFPR_PULL_BOTH (MFPR_PULL_LOW | MFPR_PULLUP_EN)
#define MFPR_PULL_HIGH (MFPR_PULL_SEL | MFPR_PULLUP_EN)
/* PXA3xx common MFP configurations - processor specific ones defined
* in mfp-pxa300.h and mfp-pxa320.h
*/
#define GPIO0_GPIO MFP_CFG(GPIO0, AF0)
#define GPIO1_GPIO MFP_CFG(GPIO1, AF0)
#define GPIO2_GPIO MFP_CFG(GPIO2, AF0)
#define GPIO3_GPIO MFP_CFG(GPIO3, AF0)
#define GPIO4_GPIO MFP_CFG(GPIO4, AF0)
#define GPIO5_GPIO MFP_CFG(GPIO5, AF0)
#define GPIO6_GPIO MFP_CFG(GPIO6, AF0)
#define GPIO7_GPIO MFP_CFG(GPIO7, AF0)
#define GPIO8_GPIO MFP_CFG(GPIO8, AF0)
#define GPIO9_GPIO MFP_CFG(GPIO9, AF0)
#define GPIO10_GPIO MFP_CFG(GPIO10, AF0)
#define GPIO11_GPIO MFP_CFG(GPIO11, AF0)
#define GPIO12_GPIO MFP_CFG(GPIO12, AF0)
#define GPIO13_GPIO MFP_CFG(GPIO13, AF0)
#define GPIO14_GPIO MFP_CFG(GPIO14, AF0)
#define GPIO15_GPIO MFP_CFG(GPIO15, AF0)
#define GPIO16_GPIO MFP_CFG(GPIO16, AF0)
#define GPIO17_GPIO MFP_CFG(GPIO17, AF0)
#define GPIO18_GPIO MFP_CFG(GPIO18, AF0)
#define GPIO19_GPIO MFP_CFG(GPIO19, AF0)
#define GPIO20_GPIO MFP_CFG(GPIO20, AF0)
#define GPIO21_GPIO MFP_CFG(GPIO21, AF0)
#define GPIO22_GPIO MFP_CFG(GPIO22, AF0)
#define GPIO23_GPIO MFP_CFG(GPIO23, AF0)
#define GPIO24_GPIO MFP_CFG(GPIO24, AF0)
#define GPIO25_GPIO MFP_CFG(GPIO25, AF0)
#define GPIO26_GPIO MFP_CFG(GPIO26, AF0)
#define GPIO27_GPIO MFP_CFG(GPIO27, AF0)
#define GPIO28_GPIO MFP_CFG(GPIO28, AF0)
#define GPIO29_GPIO MFP_CFG(GPIO29, AF0)
#define GPIO30_GPIO MFP_CFG(GPIO30, AF0)
#define GPIO31_GPIO MFP_CFG(GPIO31, AF0)
#define GPIO32_GPIO MFP_CFG(GPIO32, AF0)
#define GPIO33_GPIO MFP_CFG(GPIO33, AF0)
#define GPIO34_GPIO MFP_CFG(GPIO34, AF0)
#define GPIO35_GPIO MFP_CFG(GPIO35, AF0)
#define GPIO36_GPIO MFP_CFG(GPIO36, AF0)
#define GPIO37_GPIO MFP_CFG(GPIO37, AF0)
#define GPIO38_GPIO MFP_CFG(GPIO38, AF0)
#define GPIO39_GPIO MFP_CFG(GPIO39, AF0)
#define GPIO40_GPIO MFP_CFG(GPIO40, AF0)
#define GPIO41_GPIO MFP_CFG(GPIO41, AF0)
#define GPIO42_GPIO MFP_CFG(GPIO42, AF0)
#define GPIO43_GPIO MFP_CFG(GPIO43, AF0)
#define GPIO44_GPIO MFP_CFG(GPIO44, AF0)
#define GPIO45_GPIO MFP_CFG(GPIO45, AF0)
#define GPIO47_GPIO MFP_CFG(GPIO47, AF0)
#define GPIO48_GPIO MFP_CFG(GPIO48, AF0)
#define GPIO53_GPIO MFP_CFG(GPIO53, AF0)
#define GPIO54_GPIO MFP_CFG(GPIO54, AF0)
#define GPIO55_GPIO MFP_CFG(GPIO55, AF0)
#define GPIO57_GPIO MFP_CFG(GPIO57, AF0)
#define GPIO63_GPIO MFP_CFG(GPIO63, AF0)
#define GPIO64_GPIO MFP_CFG(GPIO64, AF0)
#define GPIO65_GPIO MFP_CFG(GPIO65, AF0)
#define GPIO66_GPIO MFP_CFG(GPIO66, AF0)
#define GPIO67_GPIO MFP_CFG(GPIO67, AF0)
#define GPIO68_GPIO MFP_CFG(GPIO68, AF0)
#define GPIO69_GPIO MFP_CFG(GPIO69, AF0)
#define GPIO70_GPIO MFP_CFG(GPIO70, AF0)
#define GPIO71_GPIO MFP_CFG(GPIO71, AF0)
#define GPIO72_GPIO MFP_CFG(GPIO72, AF0)
#define GPIO73_GPIO MFP_CFG(GPIO73, AF0)
#define GPIO74_GPIO MFP_CFG(GPIO74, AF0)
#define GPIO75_GPIO MFP_CFG(GPIO75, AF0)
#define GPIO76_GPIO MFP_CFG(GPIO76, AF0)
#define GPIO77_GPIO MFP_CFG(GPIO77, AF0)
#define GPIO78_GPIO MFP_CFG(GPIO78, AF0)
#define GPIO79_GPIO MFP_CFG(GPIO79, AF0)
#define GPIO80_GPIO MFP_CFG(GPIO80, AF0)
#define GPIO81_GPIO MFP_CFG(GPIO81, AF0)
#define GPIO82_GPIO MFP_CFG(GPIO82, AF0)
#define GPIO83_GPIO MFP_CFG(GPIO83, AF0)
#define GPIO84_GPIO MFP_CFG(GPIO84, AF0)
#define GPIO85_GPIO MFP_CFG(GPIO85, AF0)
#define GPIO86_GPIO MFP_CFG(GPIO86, AF0)
#define GPIO87_GPIO MFP_CFG(GPIO87, AF0)
#define GPIO88_GPIO MFP_CFG(GPIO88, AF0)
#define GPIO89_GPIO MFP_CFG(GPIO89, AF0)
#define GPIO90_GPIO MFP_CFG(GPIO90, AF0)
#define GPIO91_GPIO MFP_CFG(GPIO91, AF0)
#define GPIO92_GPIO MFP_CFG(GPIO92, AF0)
#define GPIO93_GPIO MFP_CFG(GPIO93, AF0)
#define GPIO94_GPIO MFP_CFG(GPIO94, AF0)
#define GPIO95_GPIO MFP_CFG(GPIO95, AF0)
#define GPIO96_GPIO MFP_CFG(GPIO96, AF0)
#define GPIO97_GPIO MFP_CFG(GPIO97, AF0)
#define GPIO98_GPIO MFP_CFG(GPIO98, AF0)
#define GPIO99_GPIO MFP_CFG(GPIO99, AF0)
#define GPIO100_GPIO MFP_CFG(GPIO100, AF0)
#define GPIO101_GPIO MFP_CFG(GPIO101, AF0)
#define GPIO102_GPIO MFP_CFG(GPIO102, AF0)
#define GPIO103_GPIO MFP_CFG(GPIO103, AF0)
#define GPIO104_GPIO MFP_CFG(GPIO104, AF0)
#define GPIO105_GPIO MFP_CFG(GPIO105, AF0)
#define GPIO106_GPIO MFP_CFG(GPIO106, AF0)
#define GPIO107_GPIO MFP_CFG(GPIO107, AF0)
#define GPIO108_GPIO MFP_CFG(GPIO108, AF0)
#define GPIO109_GPIO MFP_CFG(GPIO109, AF0)
#define GPIO110_GPIO MFP_CFG(GPIO110, AF0)
#define GPIO111_GPIO MFP_CFG(GPIO111, AF0)
#define GPIO112_GPIO MFP_CFG(GPIO112, AF0)
#define GPIO113_GPIO MFP_CFG(GPIO113, AF0)
#define GPIO114_GPIO MFP_CFG(GPIO114, AF0)
#define GPIO115_GPIO MFP_CFG(GPIO115, AF0)
#define GPIO116_GPIO MFP_CFG(GPIO116, AF0)
#define GPIO117_GPIO MFP_CFG(GPIO117, AF0)
#define GPIO118_GPIO MFP_CFG(GPIO118, AF0)
#define GPIO119_GPIO MFP_CFG(GPIO119, AF0)
#define GPIO120_GPIO MFP_CFG(GPIO120, AF0)
#define GPIO121_GPIO MFP_CFG(GPIO121, AF0)
#define GPIO122_GPIO MFP_CFG(GPIO122, AF0)
#define GPIO123_GPIO MFP_CFG(GPIO123, AF0)
#define GPIO124_GPIO MFP_CFG(GPIO124, AF0)
#define GPIO125_GPIO MFP_CFG(GPIO125, AF0)
#define GPIO126_GPIO MFP_CFG(GPIO126, AF0)
#define GPIO127_GPIO MFP_CFG(GPIO127, AF0)
#define GPIO0_2_GPIO MFP_CFG(GPIO0_2, AF0)
#define GPIO1_2_GPIO MFP_CFG(GPIO1_2, AF0)
#define GPIO2_2_GPIO MFP_CFG(GPIO2_2, AF0)
#define GPIO3_2_GPIO MFP_CFG(GPIO3_2, AF0)
#define GPIO4_2_GPIO MFP_CFG(GPIO4_2, AF0)
#define GPIO5_2_GPIO MFP_CFG(GPIO5_2, AF0)
#define GPIO6_2_GPIO MFP_CFG(GPIO6_2, AF0)
/*
* each MFP pin will have a MFPR register, since the offset of the
* register varies between processors, the processor specific code
* should initialize the pin offsets by pxa3xx_mfp_init_addr()
*
* pxa3xx_mfp_init_addr - accepts a table of "pxa3xx_mfp_addr_map"
* structure, which represents a range of MFP pins from "start" to
* "end", with the offset begining at "offset", to define a single
* pin, let "end" = -1
*
* use
*
* MFP_ADDR_X() to define a range of pins
* MFP_ADDR() to define a single pin
* MFP_ADDR_END to signal the end of pin offset definitions
*/
struct pxa3xx_mfp_addr_map {
unsigned int start;
unsigned int end;
unsigned long offset;
};
#define MFP_ADDR_X(start, end, offset) \
{ MFP_PIN_##start, MFP_PIN_##end, offset }
#define MFP_ADDR(pin, offset) \
{ MFP_PIN_##pin, -1, offset }
#define MFP_ADDR_END { MFP_PIN_INVALID, 0 }
/*
* pxa3xx_mfp_read()/pxa3xx_mfp_write() - for direct read/write access
* to the MFPR register
*/
unsigned long pxa3xx_mfp_read(int mfp);
void pxa3xx_mfp_write(int mfp, unsigned long mfpr_val);
/*
* pxa3xx_mfp_config - configure the MFPR registers
*
* used by board specific initialization code
*/
void pxa3xx_mfp_config(unsigned long *mfp_cfgs, int num);
/*
* pxa3xx_mfp_init_addr() - initialize the mapping between mfp pin
* index and MFPR register offset
*
* used by processor specific code
*/
void __init pxa3xx_mfp_init_addr(struct pxa3xx_mfp_addr_map *);
void __init pxa3xx_init_mfp(void);
#endif /* __ASM_ARCH_MFP_PXA3XX_H */