include/linux/gpio/gpio-nomadik.h

Source file repositories/reference/linux-study-clean/include/linux/gpio/gpio-nomadik.h

File Facts

System
Linux kernel
Corpus path
include/linux/gpio/gpio-nomadik.h
Extension
.h
Size
7236 bytes
Lines
275
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct nmk_gpio_chip {
	struct gpio_chip chip;
	void __iomem *addr;
	struct clk *clk;
	unsigned int bank;
	void (*set_ioforce)(bool enable);
	spinlock_t lock;
	bool sleepmode;
	bool is_mobileye_soc;
	/* Keep track of configured edges */
	u32 edge_rising;
	u32 edge_falling;
	u32 real_wake;
	u32 rwimsc;
	u32 fwimsc;
	u32 rimsc;
	u32 fimsc;
	u32 pull_up;
	u32 lowemi;
};

/* Alternate functions: function C is set in hw by setting both A and B */
#define NMK_GPIO_ALT_GPIO	0
#define NMK_GPIO_ALT_A	1
#define NMK_GPIO_ALT_B	2
#define NMK_GPIO_ALT_C	(NMK_GPIO_ALT_A | NMK_GPIO_ALT_B)

#define NMK_GPIO_ALT_CX_SHIFT 2
#define NMK_GPIO_ALT_C1	((1<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
#define NMK_GPIO_ALT_C2	((2<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
#define NMK_GPIO_ALT_C3	((3<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
#define NMK_GPIO_ALT_C4	((4<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)

#define PRCM_GPIOCR_ALTCX(pin_num,\
	altc1_used, altc1_ri, altc1_cb,\
	altc2_used, altc2_ri, altc2_cb,\
	altc3_used, altc3_ri, altc3_cb,\
	altc4_used, altc4_ri, altc4_cb)\
{\
	.pin = pin_num,\
	.altcx[PRCM_IDX_GPIOCR_ALTC1] = {\
		.used = altc1_used,\
		.reg_index = altc1_ri,\
		.control_bit = altc1_cb\
	},\
	.altcx[PRCM_IDX_GPIOCR_ALTC2] = {\
		.used = altc2_used,\
		.reg_index = altc2_ri,\
		.control_bit = altc2_cb\
	},\
	.altcx[PRCM_IDX_GPIOCR_ALTC3] = {\
		.used = altc3_used,\
		.reg_index = altc3_ri,\
		.control_bit = altc3_cb\
	},\
	.altcx[PRCM_IDX_GPIOCR_ALTC4] = {\
		.used = altc4_used,\
		.reg_index = altc4_ri,\
		.control_bit = altc4_cb\
	},\
}

/**
 * enum prcm_gpiocr_reg_index - Used to reference a PRCM GPIOCR register address.
 */
enum prcm_gpiocr_reg_index {
	PRCM_IDX_GPIOCR1,
	PRCM_IDX_GPIOCR2,
	PRCM_IDX_GPIOCR3
};
/**
 * enum prcm_gpiocr_altcx_index - Used to reference an Other alternate-C function.
 */
enum prcm_gpiocr_altcx_index {
	PRCM_IDX_GPIOCR_ALTC1,
	PRCM_IDX_GPIOCR_ALTC2,
	PRCM_IDX_GPIOCR_ALTC3,
	PRCM_IDX_GPIOCR_ALTC4,
	PRCM_IDX_GPIOCR_ALTC_MAX,
};

/**
 * struct prcm_gpiocr_altcx - Other alternate-C function
 * @used: other alternate-C function availability
 * @reg_index: PRCM GPIOCR register index used to control the function
 * @control_bit: PRCM GPIOCR bit used to control the function
 */
struct prcm_gpiocr_altcx {
	bool used:1;
	u8 reg_index:2;

Annotation

Implementation Notes