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/*
* ASPEED GPIO Controller
*
* Copyright (C) 2017-2018 IBM Corp.
*
* This code is licensed under the GPL version 2 or later. See
* the COPYING file in the top-level directory.
*/
#ifndef ASPEED_GPIO_H
#define ASPEED_GPIO_H
#include "hw/sysbus.h"
#include "qom/object.h"
#define TYPE_ASPEED_GPIO "aspeed.gpio"
OBJECT_DECLARE_TYPE(AspeedGPIOState, AspeedGPIOClass, ASPEED_GPIO)
#define ASPEED_GPIO_MAX_NR_SETS 8
#define ASPEED_GPIOS_PER_SET 32
#define ASPEED_REGS_PER_BANK 14
#define ASPEED_GPIO_MAX_NR_REGS (ASPEED_REGS_PER_BANK * ASPEED_GPIO_MAX_NR_SETS)
#define ASPEED_GROUPS_PER_SET 4
#define ASPEED_GPIO_NR_DEBOUNCE_REGS 3
#define ASPEED_CHARS_PER_GROUP_LABEL 4
typedef struct GPIOSets GPIOSets;
typedef struct GPIOSetProperties {
uint32_t input;
uint32_t output;
char group_label[ASPEED_GROUPS_PER_SET][ASPEED_CHARS_PER_GROUP_LABEL];
} GPIOSetProperties;
enum GPIORegType {
gpio_not_a_reg,
gpio_reg_data_value,
gpio_reg_direction,
gpio_reg_int_enable,
gpio_reg_int_sens_0,
gpio_reg_int_sens_1,
gpio_reg_int_sens_2,
gpio_reg_int_status,
gpio_reg_reset_tolerant,
gpio_reg_debounce_1,
gpio_reg_debounce_2,
gpio_reg_cmd_source_0,
gpio_reg_cmd_source_1,
gpio_reg_data_read,
gpio_reg_input_mask,
};
typedef struct AspeedGPIOReg {
uint16_t set_idx;
enum GPIORegType type;
} AspeedGPIOReg;
struct AspeedGPIOClass {
SysBusDevice parent_obj;
const GPIOSetProperties *props;
uint32_t nr_gpio_pins;
uint32_t nr_gpio_sets;
const AspeedGPIOReg *reg_table;
};
struct AspeedGPIOState {
/* <private> */
SysBusDevice parent;
/*< public >*/
MemoryRegion iomem;
int pending;
qemu_irq irq;
qemu_irq gpios[ASPEED_GPIO_MAX_NR_SETS][ASPEED_GPIOS_PER_SET];
/* Parallel GPIO Registers */
uint32_t debounce_regs[ASPEED_GPIO_NR_DEBOUNCE_REGS];
struct GPIOSets {
uint32_t data_value; /* Reflects pin values */
uint32_t data_read; /* Contains last value written to data value */
uint32_t direction;
uint32_t int_enable;
uint32_t int_sens_0;
uint32_t int_sens_1;
uint32_t int_sens_2;
uint32_t int_status;
uint32_t reset_tol;
uint32_t cmd_source_0;
uint32_t cmd_source_1;
uint32_t debounce_1;
uint32_t debounce_2;
uint32_t input_mask;
} sets[ASPEED_GPIO_MAX_NR_SETS];
};
#endif /* _ASPEED_GPIO_H_ */
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