/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright ( c ) 2019 Intel Corporation .
*/
#ifndef __PINCTRL_EQUILIBRIUM_H
#define __PINCTRL_EQUILIBRIUM_H
/* PINPAD register offset */
#define REG_PMX_BASE 0 x0 /* Port Multiplexer Control Register */
#define REG_PUEN 0 x80 /* PULL UP Enable Register */
#define REG_PDEN 0 x84 /* PULL DOWN Enable Register */
#define REG_SRC 0 x88 /* Slew Rate Control Register */
#define REG_DCC0 0 x8C /* Drive Current Control Register 0 */
#define REG_DCC1 0 x90 /* Drive Current Control Register 1 */
#define REG_OD 0 x94 /* Open Drain Enable Register */
#define REG_AVAIL 0 x98 /* Pad Control Availability Register */
#define DRV_CUR_PINS 16 /* Drive Current pin number per register */
#define REG_DRCC(x) (REG_DCC0 + (x) * 4 ) /* Driver current macro */
/* GPIO register offset */
#define GPIO_OUT 0 x0 /* Data Output Register */
#define GPIO_IN 0 x4 /* Data Input Register */
#define GPIO_DIR 0 x8 /* Direction Register */
#define GPIO_EXINTCR0 0 x18 /* External Interrupt Control Register 0 */
#define GPIO_EXINTCR1 0 x1C /* External Interrupt Control Register 1 */
#define GPIO_IRNCR 0 x20 /* IRN Capture Register */
#define GPIO_IRNICR 0 x24 /* IRN Interrupt Control Register */
#define GPIO_IRNEN 0 x28 /* IRN Interrupt Enable Register */
#define GPIO_IRNCFG 0 x2C /* IRN Interrupt Configuration Register */
#define GPIO_IRNRNSET 0 x30 /* IRN Interrupt Enable Set Register */
#define GPIO_IRNENCLR 0 x34 /* IRN Interrupt Enable Clear Register */
#define GPIO_OUTSET 0 x40 /* Output Set Register */
#define GPIO_OUTCLR 0 x44 /* Output Clear Register */
#define GPIO_DIRSET 0 x48 /* Direction Set Register */
#define GPIO_DIRCLR 0 x4C /* Direction Clear Register */
/* parse given pin's driver current value */
#define PARSE_DRV_CURRENT(val, pin) (((val) >> ((pin) * 2 )) & 0 x3)
#define GPIO_EDGE_TRIG 0
#define GPIO_LEVEL_TRIG 1
#define GPIO_SINGLE_EDGE 0
#define GPIO_BOTH_EDGE 1
#define GPIO_POSITIVE_TRIG 0
#define GPIO_NEGATIVE_TRIG 1
#define EQBR_GPIO_MODE 0
typedef enum {
OP_COUNT_NR_FUNCS,
OP_ADD_FUNCS,
OP_COUNT_NR_FUNC_GRPS,
OP_ADD_FUNC_GRPS,
OP_NONE,
} funcs_util_ops;
/**
* struct gpio_irq_type : gpio irq configuration
* @ trig_type : level trigger or edge trigger
* @ edge_type : sigle edge or both edge
* @ logic_type : positive trigger or negative trigger
*/
struct gpio_irq_type {
unsigned int trig_type;
unsigned int edge_type;
unsigned int logic_type;
};
/**
* struct eqbr_pin_bank : represent a pin bank .
* @ membase : base address of the pin bank register .
* @ id : bank id , to idenify the unique bank .
* @ pin_base : starting pin number of the pin bank .
* @ nr_pins : number of the pins of the pin bank .
* @ aval_pinmap : available pin bitmap of the pin bank .
*/
struct eqbr_pin_bank {
void __iomem *membase;
unsigned int id;
unsigned int pin_base;
unsigned int nr_pins;
u32 aval_pinmap;
};
struct fwnode_handle;
/**
* struct eqbr_gpio_ctrl : represent a gpio controller .
* @ chip : gpio chip .
* @ fwnode : firmware node of gpio controller .
* @ bank : pointer to corresponding pin bank .
* @ membase : base address of the gpio controller .
* @ name : gpio chip name .
* @ virq : irq number of the gpio chip to parent ' s irq domain .
* @ lock : spin lock to protect gpio register write .
*/
struct eqbr_gpio_ctrl {
struct gpio_chip chip;
struct fwnode_handle *fwnode;
struct eqbr_pin_bank *bank;
void __iomem *membase;
const char *name;
unsigned int virq;
raw_spinlock_t lock; /* protect gpio register */
};
/**
* struct eqbr_pinctrl_drv_data :
* @ dev : device instance representing the controller .
* @ pctl_desc : pin controller descriptor .
* @ pctl_dev : pin control class device
* @ membase : base address of pin controller
* @ pin_banks : list of pin banks of the driver .
* @ nr_banks : number of pin banks .
* @ gpio_ctrls : list of gpio controllers .
* @ nr_gpio_ctrls : number of gpio controllers .
* @ lock : protect pinctrl register write
*/
struct eqbr_pinctrl_drv_data {
struct device *dev;
struct pinctrl_desc pctl_desc;
struct pinctrl_dev *pctl_dev;
void __iomem *membase;
struct eqbr_pin_bank *pin_banks;
unsigned int nr_banks;
struct eqbr_gpio_ctrl *gpio_ctrls;
unsigned int nr_gpio_ctrls;
raw_spinlock_t lock; /* protect pinpad register */
};
#endif /* __PINCTRL_EQUILIBRIUM_H */
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