/*
* linux/include/asm-arm/arch-pxa/mfp.h
*
* Multi-Function Pin Definitions
*
* Copyright (C) 2007 Marvell International Ltd.
*
* 2007-8-21: eric miao <eric.miao@marvell.com>
* initial version
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ASM_ARCH_MFP_H
#define __ASM_ARCH_MFP_H
#define MFPR_BASE (0x40e10000)
#define MFPR_SIZE (PAGE_SIZE)
#define mfp_to_gpio(m) ((m) % 128)
/* list of all the configurable MFP pins */
enum {
MFP_PIN_INVALID = -1,
MFP_PIN_GPIO0 = 0,
MFP_PIN_GPIO1,
MFP_PIN_GPIO2,
MFP_PIN_GPIO3,
MFP_PIN_GPIO4,
MFP_PIN_GPIO5,
MFP_PIN_GPIO6,
MFP_PIN_GPIO7,
MFP_PIN_GPIO8,
MFP_PIN_GPIO9,
MFP_PIN_GPIO10,
MFP_PIN_GPIO11,
MFP_PIN_GPIO12,
MFP_PIN_GPIO13,
MFP_PIN_GPIO14,
MFP_PIN_GPIO15,
MFP_PIN_GPIO16,
MFP_PIN_GPIO17,
MFP_PIN_GPIO18,
MFP_PIN_GPIO19,
MFP_PIN_GPIO20,
MFP_PIN_GPIO21,
MFP_PIN_GPIO22,
MFP_PIN_GPIO23,
MFP_PIN_GPIO24,
MFP_PIN_GPIO25,
MFP_PIN_GPIO26,
MFP_PIN_GPIO27,
MFP_PIN_GPIO28,
MFP_PIN_GPIO29,
MFP_PIN_GPIO30,
MFP_PIN_GPIO31,
MFP_PIN_GPIO32,
MFP_PIN_GPIO33,
MFP_PIN_GPIO34,
MFP_PIN_GPIO35,
MFP_PIN_GPIO36,
MFP_PIN_GPIO37,
MFP_PIN_GPIO38,
MFP_PIN_GPIO39,
MFP_PIN_GPIO40,
MFP_PIN_GPIO41,
MFP_PIN_GPIO42,
MFP_PIN_GPIO43,
MFP_PIN_GPIO44,
MFP_PIN_GPIO45,
MFP_PIN_GPIO46,
MFP_PIN_GPIO47,
MFP_PIN_GPIO48,
MFP_PIN_GPIO49,
MFP_PIN_GPIO50,
MFP_PIN_GPIO51,
MFP_PIN_GPIO52,
MFP_PIN_GPIO53,
MFP_PIN_GPIO54,
MFP_PIN_GPIO55,
MFP_PIN_GPIO56,
MFP_PIN_GPIO57,
MFP_PIN_GPIO58,
MFP_PIN_GPIO59,
MFP_PIN_GPIO60,
MFP_PIN_GPIO61,
MFP_PIN_GPIO62,
MFP_PIN_GPIO63,
MFP_PIN_GPIO64,
MFP_PIN_GPIO65,
MFP_PIN_GPIO66,
MFP_PIN_GPIO67,
MFP_PIN_GPIO68,
MFP_PIN_GPIO69,
MFP_PIN_GPIO70,
MFP_PIN_GPIO71,
MFP_PIN_GPIO72,
MFP_PIN_GPIO73,
MFP_PIN_GPIO74,
MFP_PIN_GPIO75,
MFP_PIN_GPIO76,
MFP_PIN_GPIO77,
MFP_PIN_GPIO78,
MFP_PIN_GPIO79,
MFP_PIN_GPIO80,
MFP_PIN_GPIO81,
MFP_PIN_GPIO82,
MFP_PIN_GPIO83,
MFP_PIN_GPIO84,
MFP_PIN_GPIO85,
MFP_PIN_GPIO86,
MFP_PIN_GPIO87,
MFP_PIN_GPIO88,
MFP_PIN_GPIO89,
MFP_PIN_GPIO90,
MFP_PIN_GPIO91,
MFP_PIN_GPIO92,
MFP_PIN_GPIO93,
MFP_PIN_GPIO94,
MFP_PIN_GPIO95,
MFP_PIN_GPIO96,
MFP_PIN_GPIO97,
MFP_PIN_GPIO98,
MFP_PIN_GPIO99,
MFP_PIN_GPIO100,
MFP_PIN_GPIO101,
MFP_PIN_GPIO102,
MFP_PIN_GPIO103,
MFP_PIN_GPIO104,
MFP_PIN_GPIO105,
MFP_PIN_GPIO106,
MFP_PIN_GPIO107,
MFP_PIN_GPIO108,
MFP_PIN_GPIO109,
MFP_PIN_GPIO110,
MFP_PIN_GPIO111,
MFP_PIN_GPIO112,
MFP_PIN_GPIO113,
MFP_PIN_GPIO114,
MFP_PIN_GPIO115,
MFP_PIN_GPIO116,
MFP_PIN_GPIO117,
MFP_PIN_GPIO118,
MFP_PIN_GPIO119,
MFP_PIN_GPIO120,
MFP_PIN_GPIO121,
MFP_PIN_GPIO122,
MFP_PIN_GPIO123,
MFP_PIN_GPIO124,
MFP_PIN_GPIO125,
MFP_PIN_GPIO126,
MFP_PIN_GPIO127,
MFP_PIN_GPIO0_2,
MFP_PIN_GPIO1_2,
MFP_PIN_GPIO2_2,
MFP_PIN_GPIO3_2,
MFP_PIN_GPIO4_2,
MFP_PIN_GPIO5_2,
MFP_PIN_GPIO6_2,
MFP_PIN_GPIO7_2,
MFP_PIN_GPIO8_2,
MFP_PIN_GPIO9_2,
MFP_PIN_GPIO10_2,
MFP_PIN_GPIO11_2,
MFP_PIN_GPIO12_2,
MFP_PIN_GPIO13_2,
MFP_PIN_GPIO14_2,
MFP_PIN_GPIO15_2,
MFP_PIN_GPIO16_2,
MFP_PIN_GPIO17_2,
MFP_PIN_ULPI_STP,
MFP_PIN_ULPI_NXT,
MFP_PIN_ULPI_DIR,
MFP_PIN_nXCVREN,
MFP_PIN_DF_CLE_nOE,
MFP_PIN_DF_nADV1_ALE,
MFP_PIN_DF_SCLK_E,
MFP_PIN_DF_SCLK_S,
MFP_PIN_nBE0,
MFP_PIN_nBE1,
MFP_PIN_DF_nADV2_ALE,
MFP_PIN_DF_INT_RnB,
MFP_PIN_DF_nCS0,
MFP_PIN_DF_nCS1,
MFP_PIN_nLUA,
MFP_PIN_nLLA,
MFP_PIN_DF_nWE,
MFP_PIN_DF_ALE_nWE,
MFP_PIN_DF_nRE_nOE,
MFP_PIN_DF_ADDR0,
MFP_PIN_DF_ADDR1,
MFP_PIN_DF_ADDR2,
MFP_PIN_DF_ADDR3,
MFP_PIN_DF_IO0,
MFP_PIN_DF_IO1,
MFP_PIN_DF_IO2,
MFP_PIN_DF_IO3,
MFP_PIN_DF_IO4,
MFP_PIN_DF_IO5,
MFP_PIN_DF_IO6,
MFP_PIN_DF_IO7,
MFP_PIN_DF_IO8,
MFP_PIN_DF_IO9,
MFP_PIN_DF_IO10,
MFP_PIN_DF_IO11,
MFP_PIN_DF_IO12,
MFP_PIN_DF_IO13,
MFP_PIN_DF_IO14,
MFP_PIN_DF_IO15,
MFP_PIN_MAX,
};
/*
* 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 14d) (bit 13d)
*
* 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 MFP_LPM_DRIVE_LOW 0x8
#define MFP_LPM_DRIVE_HIGH 0x6
#define MFP_LPM_PULL_HIGH 0x7
#define MFP_LPM_PULL_LOW 0x9
#define MFP_LPM_FLOAT 0x1
#define MFP_LPM_PULL_NEITHER 0x0
/*
* The pullup and pulldown state of the MFP pin is by default determined by
* selected alternate function. In case some buggy devices need to override
* this default behavior, pxa3xx_mfp_set_pull() can be invoked with one of
* the following definition as the parameter.
*
* Definition pull_sel pullup_en pulldown_en
* MFP_PULL_HIGH 1 1 0
* MFP_PULL_LOW 1 0 1
* MFP_PULL_BOTH 1 1 1
* MFP_PULL_NONE 1 0 0
* MFP_PULL_DEFAULT 0 X X
*
* NOTE: pxa3xx_mfp_set_pull() will modify the PULLUP_EN and PULLDOWN_EN
* bits, which will cause potential conflicts with the low power mode
* setting, device drivers should take care of this
*/
#define MFP_PULL_BOTH (0x7u)
#define MFP_PULL_HIGH (0x6u)
#define MFP_PULL_LOW (0x5u)
#define MFP_PULL_NONE (0x4u)
#define MFP_PULL_DEFAULT (0x0u)
#define MFP_AF0 (0)
#define MFP_AF1 (1)
#define MFP_AF2 (2)
#define MFP_AF3 (3)
#define MFP_AF4 (4)
#define MFP_AF5 (5)
#define MFP_AF6 (6)
#define MFP_AF7 (7)
#define MFP_DS01X (0)
#define MFP_DS02X (1)
#define MFP_DS03X (2)
#define MFP_DS04X (3)
#define MFP_DS06X (4)
#define MFP_DS08X (5)
#define MFP_DS10X (6)
#define MFP_DS12X (7)
#define MFP_EDGE_BOTH 0x3
#define MFP_EDGE_RISE 0x2
#define MFP_EDGE_FALL 0x1
#define MFP_EDGE_NONE 0x0
#define MFPR_AF_MASK 0x0007
#define MFPR_DRV_MASK 0x1c00
#define MFPR_RDH_MASK 0x0200
#define MFPR_LPM_MASK 0xe180
#define MFPR_PULL_MASK 0xe000
#define MFPR_EDGE_MASK 0x0070
#define MFPR_ALT_OFFSET 0
#define MFPR_ERE_OFFSET 4
#define MFPR_EFE_OFFSET 5
#define MFPR_EC_OFFSET 6
#define MFPR_SON_OFFSET 7
#define MFPR_SD_OFFSET 8
#define MFPR_SS_OFFSET 9
#define MFPR_DRV_OFFSET 10
#define MFPR_PD_OFFSET 13
#define MFPR_PU_OFFSET 14
#define MFPR_PS_OFFSET 15
#define MFPR(af, drv, rdh, lpm, edge) \
(((af) & 0x7) | (((drv) & 0x7) << 10) |\
(((rdh) & 0x1) << 9) |\
(((lpm) & 0x3) << 7) |\
(((lpm) & 0x4) << 12)|\
(((lpm) & 0x8) << 10)|\
((!(edge)) << 6) |\
(((edge) & 0x1) << 5) |\
(((edge) & 0x2) << 3))
/*
* a possible MFP configuration is represented by a 32-bit integer
* bit 0..15 - MFPR value (16-bit)
* bit 16..31 - mfp pin index (used to obtain the MFPR offset)
*
* to facilitate the definition, the following macros are provided
*
* MFPR_DEFAULT - default MFPR value, with
* alternate function = 0,
* drive strength = fast 1mA (MFP_DS01X)
* low power mode = default
* release dalay hold = false (RDH bit)
* edge detection = none
*
* MFP_CFG - default MFPR value with alternate function
* MFP_CFG_DRV - default MFPR value with alternate function and
* pin drive strength
* MFP_CFG_LPM - default MFPR value with alternate function and
* low power mode
* MFP_CFG_X - default MFPR value with alternate function,
* pin drive strength and low power mode
*
* use
*
* MFP_CFG_PIN - to get the MFP pin index
* MFP_CFG_VAL - to get the corresponding MFPR value
*/
typedef uint32_t mfp_cfg_t;
#define MFP_CFG_PIN(mfp_cfg) (((mfp_cfg) >> 16) & 0xffff)
#define MFP_CFG_VAL(mfp_cfg) ((mfp_cfg) & 0xffff)
/*
* MFP register defaults to
* drive strength fast 3mA (010'b)
* edge detection logic disabled
* alternate function 0
*/
#define MFPR_DEFAULT (0x0840)
#define MFP_CFG(pin, af) \
((MFP_PIN_##pin << 16) | MFPR_DEFAULT | (MFP_##af))
#define MFP_CFG_DRV(pin, af, drv) \
((MFP_PIN_##pin << 16) | (MFPR_DEFAULT & ~MFPR_DRV_MASK) |\
((MFP_##drv) << 10) | (MFP_##af))
#define MFP_CFG_LPM(pin, af, lpm) \
((MFP_PIN_##pin << 16) | (MFPR_DEFAULT & ~MFPR_LPM_MASK) |\
(((MFP_LPM_##lpm) & 0x3) << 7) |\
(((MFP_LPM_##lpm) & 0x4) << 12) |\
(((MFP_LPM_##lpm) & 0x8) << 10) |\
(MFP_##af))
#define MFP_CFG_X(pin, af, drv, lpm) \
((MFP_PIN_##pin << 16) |\
(MFPR_DEFAULT & ~(MFPR_DRV_MASK | MFPR_LPM_MASK)) |\
((MFP_##drv) << 10) | (MFP_##af) |\
(((MFP_LPM_##lpm) & 0x3) << 7) |\
(((MFP_LPM_##lpm) & 0x4) << 12) |\
(((MFP_LPM_##lpm) & 0x8) << 10))
/*
* 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 }
struct pxa3xx_mfp_pin {
unsigned long mfpr_off; /* MFPRxx register offset */
unsigned long mfpr_val; /* MFPRxx register value */
};
/*
* 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(mfp_cfg_t *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_H */
