drivers/gpio/gpio-msc313.c

Source file repositories/reference/linux-study-clean/drivers/gpio/gpio-msc313.c

File Facts

System
Linux kernel
Corpus path
drivers/gpio/gpio-msc313.c
Extension
.c
Size
20250 bytes
Lines
730
Domain
Driver Families
Bucket
drivers/gpio
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct msc313_gpio_data {
	const char * const *names;
	const unsigned int *offsets;
	const unsigned int num;
};

#define MSC313_GPIO_CHIPDATA(_chip) \
static const struct msc313_gpio_data _chip##_data = { \
	.names = _chip##_names, \
	.offsets = _chip##_offsets, \
	.num = ARRAY_SIZE(_chip##_offsets), \
}

#ifdef CONFIG_MACH_INFINITY
static const char * const msc313_names[] = {
	FUART_NAMES,
	SR_NAMES,
	SD_NAMES,
	I2C1_NAMES,
	SPI0_NAMES,
};

static const unsigned int msc313_offsets[] = {
	FUART_OFFSETS,
	SR_OFFSETS,
	SD_OFFSETS,
	I2C1_OFFSETS,
	SPI0_OFFSETS,
};

MSC313_GPIO_CHIPDATA(msc313);

/*
 * Unlike the msc313(e) the ssd20xd have a bunch of pins
 * that are actually called gpio probably because they
 * have no dedicated function.
 */
#define SSD20XD_PINNAME_GPIO0		"gpio0"
#define SSD20XD_PINNAME_GPIO1		"gpio1"
#define SSD20XD_PINNAME_GPIO2		"gpio2"
#define SSD20XD_PINNAME_GPIO3		"gpio3"
#define SSD20XD_PINNAME_GPIO4		"gpio4"
#define SSD20XD_PINNAME_GPIO5		"gpio5"
#define SSD20XD_PINNAME_GPIO6		"gpio6"
#define SSD20XD_PINNAME_GPIO7		"gpio7"
#define SSD20XD_PINNAME_GPIO10		"gpio10"
#define SSD20XD_PINNAME_GPIO11		"gpio11"
#define SSD20XD_PINNAME_GPIO12		"gpio12"
#define SSD20XD_PINNAME_GPIO13		"gpio13"
#define SSD20XD_PINNAME_GPIO14		"gpio14"
#define SSD20XD_PINNAME_GPIO85		"gpio85"
#define SSD20XD_PINNAME_GPIO86		"gpio86"
#define SSD20XD_PINNAME_GPIO90		"gpio90"

#define SSD20XD_GPIO_NAMES SSD20XD_PINNAME_GPIO0,  \
			   SSD20XD_PINNAME_GPIO1,  \
			   SSD20XD_PINNAME_GPIO2,  \
			   SSD20XD_PINNAME_GPIO3,  \
			   SSD20XD_PINNAME_GPIO4,  \
			   SSD20XD_PINNAME_GPIO5,  \
			   SSD20XD_PINNAME_GPIO6,  \
			   SSD20XD_PINNAME_GPIO7,  \
			   SSD20XD_PINNAME_GPIO10, \
			   SSD20XD_PINNAME_GPIO11, \
			   SSD20XD_PINNAME_GPIO12, \
			   SSD20XD_PINNAME_GPIO13, \
			   SSD20XD_PINNAME_GPIO14, \
			   SSD20XD_PINNAME_GPIO85, \
			   SSD20XD_PINNAME_GPIO86, \
			   SSD20XD_PINNAME_GPIO90

#define SSD20XD_GPIO_OFF_GPIO0 0x0
#define SSD20XD_GPIO_OFF_GPIO1 0x4
#define SSD20XD_GPIO_OFF_GPIO2 0x8
#define SSD20XD_GPIO_OFF_GPIO3 0xc
#define SSD20XD_GPIO_OFF_GPIO4 0x10
#define SSD20XD_GPIO_OFF_GPIO5 0x14
#define SSD20XD_GPIO_OFF_GPIO6 0x18
#define SSD20XD_GPIO_OFF_GPIO7 0x1c
#define SSD20XD_GPIO_OFF_GPIO10 0x28
#define SSD20XD_GPIO_OFF_GPIO11 0x2c
#define SSD20XD_GPIO_OFF_GPIO12 0x30
#define SSD20XD_GPIO_OFF_GPIO13 0x34
#define SSD20XD_GPIO_OFF_GPIO14 0x38
#define SSD20XD_GPIO_OFF_GPIO85 0x100
#define SSD20XD_GPIO_OFF_GPIO86 0x104
#define SSD20XD_GPIO_OFF_GPIO90 0x114

#define SSD20XD_GPIO_OFFSETS SSD20XD_GPIO_OFF_GPIO0,  \
			     SSD20XD_GPIO_OFF_GPIO1,  \

Annotation

Implementation Notes