drivers/extcon/extcon-max14577.c

Source file repositories/reference/linux-study-clean/drivers/extcon/extcon-max14577.c

File Facts

System
Linux kernel
Corpus path
drivers/extcon/extcon-max14577.c
Extension
.c
Size
22107 bytes
Lines
804
Domain
Driver Families
Bucket
drivers/extcon
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 max14577_muic_irq {
	unsigned int irq;
	const char *name;
	unsigned int virq;
};

static struct max14577_muic_irq max14577_muic_irqs[] = {
	{ MAX14577_IRQ_INT1_ADC,	"muic-ADC" },
	{ MAX14577_IRQ_INT1_ADCLOW,	"muic-ADCLOW" },
	{ MAX14577_IRQ_INT1_ADCERR,	"muic-ADCError" },
	{ MAX14577_IRQ_INT2_CHGTYP,	"muic-CHGTYP" },
	{ MAX14577_IRQ_INT2_CHGDETRUN,	"muic-CHGDETRUN" },
	{ MAX14577_IRQ_INT2_DCDTMR,	"muic-DCDTMR" },
	{ MAX14577_IRQ_INT2_DBCHG,	"muic-DBCHG" },
	{ MAX14577_IRQ_INT2_VBVOLT,	"muic-VBVOLT" },
};

static struct max14577_muic_irq max77836_muic_irqs[] = {
	{ MAX14577_IRQ_INT1_ADC,	"muic-ADC" },
	{ MAX14577_IRQ_INT1_ADCLOW,	"muic-ADCLOW" },
	{ MAX14577_IRQ_INT1_ADCERR,	"muic-ADCError" },
	{ MAX77836_IRQ_INT1_ADC1K,	"muic-ADC1K" },
	{ MAX14577_IRQ_INT2_CHGTYP,	"muic-CHGTYP" },
	{ MAX14577_IRQ_INT2_CHGDETRUN,	"muic-CHGDETRUN" },
	{ MAX14577_IRQ_INT2_DCDTMR,	"muic-DCDTMR" },
	{ MAX14577_IRQ_INT2_DBCHG,	"muic-DBCHG" },
	{ MAX14577_IRQ_INT2_VBVOLT,	"muic-VBVOLT" },
	{ MAX77836_IRQ_INT2_VIDRM,	"muic-VIDRM" },
};

struct max14577_muic_info {
	struct device *dev;
	struct max14577 *max14577;
	struct extcon_dev *edev;
	int prev_cable_type;
	int prev_chg_type;
	u8 status[MAX14577_MUIC_STATUS_END];

	struct max14577_muic_irq *muic_irqs;
	unsigned int muic_irqs_num;
	bool irq_adc;
	bool irq_chg;
	struct work_struct irq_work;
	struct mutex mutex;

	/*
	 * Use delayed workqueue to detect cable state and then
	 * notify cable state to notifiee/platform through uevent.
	 * After completing the booting of platform, the extcon provider
	 * driver should notify cable state to upper layer.
	 */
	struct delayed_work wq_detcable;

	/*
	 * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
	 * h/w path of COMP2/COMN1 on CONTROL1 register.
	 */
	int path_usb;
	int path_uart;
};

enum max14577_muic_cable_group {
	MAX14577_CABLE_GROUP_ADC = 0,
	MAX14577_CABLE_GROUP_CHG,
};

/* Define supported accessory type */
enum max14577_muic_acc_type {
	MAX14577_MUIC_ADC_GROUND = 0x0,
	MAX14577_MUIC_ADC_SEND_END_BUTTON,
	MAX14577_MUIC_ADC_REMOTE_S1_BUTTON,
	MAX14577_MUIC_ADC_REMOTE_S2_BUTTON,
	MAX14577_MUIC_ADC_REMOTE_S3_BUTTON,
	MAX14577_MUIC_ADC_REMOTE_S4_BUTTON,
	MAX14577_MUIC_ADC_REMOTE_S5_BUTTON,
	MAX14577_MUIC_ADC_REMOTE_S6_BUTTON,
	MAX14577_MUIC_ADC_REMOTE_S7_BUTTON,
	MAX14577_MUIC_ADC_REMOTE_S8_BUTTON,
	MAX14577_MUIC_ADC_REMOTE_S9_BUTTON,
	MAX14577_MUIC_ADC_REMOTE_S10_BUTTON,
	MAX14577_MUIC_ADC_REMOTE_S11_BUTTON,
	MAX14577_MUIC_ADC_REMOTE_S12_BUTTON,
	MAX14577_MUIC_ADC_RESERVED_ACC_1,
	MAX14577_MUIC_ADC_RESERVED_ACC_2,
	MAX14577_MUIC_ADC_RESERVED_ACC_3,
	MAX14577_MUIC_ADC_RESERVED_ACC_4,
	MAX14577_MUIC_ADC_RESERVED_ACC_5,
	MAX14577_MUIC_ADC_AUDIO_DEVICE_TYPE2,
	MAX14577_MUIC_ADC_PHONE_POWERED_DEV,
	MAX14577_MUIC_ADC_TTY_CONVERTER,

Annotation

Implementation Notes