/* * linux/include/asm-arm/arch-pxa/mfp.h * * Multi-Function Pin Definitions * * Copyright (C) 2007 Marvell International Ltd. * * 2007-8-21: eric miao * 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 */