diff options
Diffstat (limited to 'arch/arm/include/asm/arch-u8500/gpio.h')
| -rw-r--r-- | arch/arm/include/asm/arch-u8500/gpio.h | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-u8500/gpio.h b/arch/arm/include/asm/arch-u8500/gpio.h new file mode 100644 index 0000000..769def1 --- /dev/null +++ b/arch/arm/include/asm/arch-u8500/gpio.h @@ -0,0 +1,247 @@ +/* + * Copyright (C) ST-Ericsson SA 2009 + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef _UX500_GPIO_h +#define _UX500_GPIO_h + +#include <asm/types.h> +#include <asm/io.h> +#include <asm/errno.h> + +#include <asm/arch/sys_proto.h> +#include <asm/arch/u8500.h> + +#define GPIO_TOTAL_PINS 268 + +#define GPIO_PINS_PER_BLOCK 32 +#define GPIO_BLOCKS_COUNT (GPIO_TOTAL_PINS/GPIO_PINS_PER_BLOCK + 1) +#define GPIO_BLOCK(pin) (((pin + GPIO_PINS_PER_BLOCK) >> 5) - 1) + + +struct gpio_register { + u32 gpio_dat; /* data register *//*0x000 */ + u32 gpio_dats; /* data Set register *//*0x004 */ + u32 gpio_datc; /* data Clear register *//*0x008 */ + u32 gpio_pdis; /* Pull disable register *//*0x00C */ + u32 gpio_dir; /* data direction register *//*0x010 */ + u32 gpio_dirs; /* data dir Set register *//*0x014 */ + u32 gpio_dirc; /* data dir Clear register *//*0x018 */ + u32 gpio_slpm; /* Sleep mode register *//*0x01C */ + u32 gpio_afsa; /* AltFun A Select reg *//*0x020 */ + u32 gpio_afsb; /* AltFun B Select reg *//*0x024 */ + u32 gpio_lowemi;/* low EMI Select reg *//*0x028 */ + u32 reserved_1[(0x040 - 0x02C) >> 2]; /*0x028-0x3C Reserved*/ + u32 gpio_rimsc; /* rising edge intr set/clear *//*0x040 */ + u32 gpio_fimsc; /* falling edge intr set/clear register *//*0x044 */ + u32 gpio_mis; /* masked interrupt status register *//*0x048 */ + u32 gpio_ic; /* Interrupt Clear register *//*0x04C */ + u32 gpio_rwimsc;/* Rising-edge Wakeup IMSC register *//*0x050 */ + u32 gpio_fwimsc;/* Falling-edge Wakeup IMSC register *//*0x054 */ + u32 gpio_wks; /* Wakeup Status register *//*0x058 */ +}; + +/* Error values returned by functions */ +enum gpio_error { + GPIO_OK = 0, + GPIO_UNSUPPORTED_HW = -2, + GPIO_UNSUPPORTED_FEATURE = -3, + GPIO_INVALID_PARAMETER = -4, + GPIO_REQUEST_NOT_APPLICABLE = -5, + GPIO_REQUEST_PENDING = -6, + GPIO_NOT_CONFIGURED = -7, + GPIO_INTERNAL_ERROR = -8, + GPIO_INTERNAL_EVENT = 1, + GPIO_REMAINING_EVENT = 2, + GPIO_NO_MORE_PENDING_EVENT = 3, + GPIO_INVALID_CLIENT = -25, + GPIO_INVALID_PIN = -26, + GPIO_PIN_BUSY = -27, + GPIO_PIN_NOT_ALLOCATED = -28, + GPIO_WRONG_CLIENT = -29, + GPIO_UNSUPPORTED_ALTFUNC = -30, +}; + +/*GPIO DEVICE ID */ +enum gpio_device_id { + GPIO_DEVICE_ID_0, + GPIO_DEVICE_ID_1, + GPIO_DEVICE_ID_2, + GPIO_DEVICE_ID_3, + GPIO_DEVICE_ID_INVALID +}; + +/* + * Alternate Function: + * refered in altfun_table to pointout particular altfun to be enabled + * when using GPIO_ALT_FUNCTION A/B/C enable/disable operation + */ +enum gpio_alt_function { + GPIO_ALT_UART_0_MODEM, + GPIO_ALT_UART_0_NO_MODEM, + GPIO_ALT_UART_1, + GPIO_ALT_UART_2, + GPIO_ALT_I2C_0, + GPIO_ALT_I2C_1, + GPIO_ALT_I2C_2, + GPIO_ALT_I2C_3, + GPIO_ALT_MSP_0, + GPIO_ALT_MSP_1, + GPIO_ALT_MSP_2, + GPIO_ALT_MSP_3, + GPIO_ALT_MSP_4, + GPIO_ALT_MSP_5, + GPIO_ALT_SSP_0, + GPIO_ALT_SSP_1, + GPIO_ALT_MM_CARD0, + GPIO_ALT_SD_CARD0, + GPIO_ALT_DMA_0, + GPIO_ALT_DMA_1, + GPIO_ALT_HSI0, + GPIO_ALT_CCIR656_INPUT, + GPIO_ALT_CCIR656_OUTPUT, + GPIO_ALT_LCD_PANEL, + GPIO_ALT_MDIF, + GPIO_ALT_SDRAM, + GPIO_ALT_HAMAC_AUDIO_DBG, + GPIO_ALT_HAMAC_VIDEO_DBG, + GPIO_ALT_CLOCK_RESET, + GPIO_ALT_TSP, + GPIO_ALT_IRDA, + GPIO_ALT_USB_MINIMUM, + GPIO_ALT_USB_I2C, + GPIO_ALT_OWM, + GPIO_ALT_PWL, + GPIO_ALT_FSMC, + GPIO_ALT_COMP_FLASH, + GPIO_ALT_SRAM_NOR_FLASH, + GPIO_ALT_FSMC_ADDLINE_0_TO_15, + GPIO_ALT_SCROLL_KEY, + GPIO_ALT_MSHC, + GPIO_ALT_HPI, + GPIO_ALT_USB_OTG, + GPIO_ALT_SDIO, + GPIO_ALT_HSMMC, + GPIO_ALT_FSMC_ADD_DATA_0_TO_25, + GPIO_ALT_HSI1, + GPIO_ALT_NOR, + GPIO_ALT_NAND, + GPIO_ALT_KEYPAD, + GPIO_ALT_VPIP, + GPIO_ALT_CAM, + GPIO_ALT_CCP1, + GPIO_ALT_EMMC, + GPIO_ALT_POP_EMMC, + GPIO_ALT_FUNMAX /* Add new alt func before this */ +}; + +/* Defines pin assignment(Software mode or Alternate mode) */ +enum gpio_mode { + GPIO_MODE_LEAVE_UNCHANGED, /* Parameter will be ignored */ + GPIO_MODE_SOFTWARE, /* Pin connected to GPIO (SW controlled) */ + GPIO_ALTF_A, /* Pin connected to altfunc 1 (HW periph 1) */ + GPIO_ALTF_B, /* Pin connected to altfunc 2 (HW periph 2) */ + GPIO_ALTF_C, /* Pin connected to altfunc 3 (HW periph 3) */ + GPIO_ALTF_FIND, /* Pin connected to altfunc 3 (HW periph 3) */ + GPIO_ALTF_DISABLE /* Pin connected to altfunc 3 (HW periph 3) */ +}; + +/* Defines GPIO pin direction */ +enum gpio_direction { + GPIO_DIR_LEAVE_UNCHANGED, /* Parameter will be ignored */ + GPIO_DIR_INPUT, /* GPIO set as input */ + GPIO_DIR_OUTPUT /* GPIO set as output */ +}; + +/* Interrupt trigger mode */ +enum gpio_trig { + GPIO_TRIG_LEAVE_UNCHANGED, /* Parameter will be ignored */ + GPIO_TRIG_DISABLE, /* Trigger no IT */ + GPIO_TRIG_RISING_EDGE, /* Trigger an IT on rising edge */ + GPIO_TRIG_FALLING_EDGE, /* Trigger an IT on falling edge */ + GPIO_TRIG_BOTH_EDGES, /* Trigger an IT on rising and falling edge */ + GPIO_TRIG_HIGH_LEVEL, /* Trigger an IT on high level */ + GPIO_TRIG_LOW_LEVEL /* Trigger an IT on low level */ +}; + +/* Configuration parameters for one GPIO pin.*/ +struct gpio_config { + enum gpio_mode mode; + enum gpio_direction direction; + enum gpio_trig trig; + char *dev_name; /* Who owns the gpio pin */ +}; + +/* GPIO pin data*/ +enum gpio_data { + GPIO_DATA_LOW, + GPIO_DATA_HIGH +}; + +/* GPIO behaviour in sleep mode */ +enum gpio_sleep_mode { + GPIO_SLEEP_MODE_LEAVE_UNCHANGED, /* Parameter will be ignored */ + GPIO_SLEEP_MODE_INPUT_DEFAULTVOLT, /* GPIO is an input with pull + up/down enabled when in sleep + mode. */ + GPIO_SLEEP_MODE_CONTROLLED_BY_GPIO /* GPIO pin is controlled by + GPIO IP. So mode, direction + and data values for GPIO pin + in sleep mode are determined + by configuration set to GPIO + pin before entering to sleep + mode. */ +}; + +/* GPIO ability to wake the system up from sleep mode.*/ +enum gpio_wake { + GPIO_WAKE_LEAVE_UNCHANGED, /* Parameter will be ignored */ + GPIO_WAKE_DISABLE, /* No wake of system from sleep mode. */ + GPIO_WAKE_LOW_LEVEL, /* Wake the system up on a LOW level. */ + GPIO_WAKE_HIGH_LEVEL, /* Wake the system up on a HIGH level. */ + GPIO_WAKE_RISING_EDGE, /* Wake the system up on a RISING edge. */ + GPIO_WAKE_FALLING_EDGE, /* Wake the system up on a FALLING edge. */ + GPIO_WAKE_BOTH_EDGES /* Wake the system up on both RISE and FALL. */ +}; + +/* Configuration parameters for one GPIO pin in sleep mode.*/ +struct gpio_sleep_config { + enum gpio_sleep_mode sleep_mode;/* GPIO behaviour in sleep mode. */ + enum gpio_wake wake; /* GPIO ability to wake up system. */ +}; + +extern int gpio_setpinconfig(int pin_id, struct gpio_config *pin_config); +extern int gpio_resetpinconfig(int pin_id, char *dev_name); +extern int gpio_writepin(int pin_id, enum gpio_data value, char *dev_name); +extern int gpio_readpin(int pin_id, enum gpio_data *value); +extern int gpio_altfuncenable(enum gpio_alt_function altfunc, + char *dev_name); +extern int gpio_altfuncdisable(enum gpio_alt_function altfunc, + char *dev_name); + +struct gpio_altfun_data { + u16 altfun; + u16 start; + u16 end; + u16 cont; + u8 type; +}; +#endif |