drivers/mfd/max8997-irq.c

Source file repositories/reference/linux-study-clean/drivers/mfd/max8997-irq.c

File Facts

System
Linux kernel
Corpus path
drivers/mfd/max8997-irq.c
Extension
.c
Size
10267 bytes
Lines
363
Domain
Driver Families
Bucket
drivers/mfd
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 max8997_irq_data {
	int mask;
	enum max8997_irq_source group;
};

#define DECLARE_IRQ(idx, _group, _mask)		\
	[(idx)] = { .group = (_group), .mask = (_mask) }
static const struct max8997_irq_data max8997_irqs[] = {
	DECLARE_IRQ(MAX8997_PMICIRQ_PWRONR,	PMIC_INT1, 1 << 0),
	DECLARE_IRQ(MAX8997_PMICIRQ_PWRONF,	PMIC_INT1, 1 << 1),
	DECLARE_IRQ(MAX8997_PMICIRQ_PWRON1SEC,	PMIC_INT1, 1 << 3),
	DECLARE_IRQ(MAX8997_PMICIRQ_JIGONR,	PMIC_INT1, 1 << 4),
	DECLARE_IRQ(MAX8997_PMICIRQ_JIGONF,	PMIC_INT1, 1 << 5),
	DECLARE_IRQ(MAX8997_PMICIRQ_LOWBAT2,	PMIC_INT1, 1 << 6),
	DECLARE_IRQ(MAX8997_PMICIRQ_LOWBAT1,	PMIC_INT1, 1 << 7),

	DECLARE_IRQ(MAX8997_PMICIRQ_JIGR,	PMIC_INT2, 1 << 0),
	DECLARE_IRQ(MAX8997_PMICIRQ_JIGF,	PMIC_INT2, 1 << 1),
	DECLARE_IRQ(MAX8997_PMICIRQ_MR,		PMIC_INT2, 1 << 2),
	DECLARE_IRQ(MAX8997_PMICIRQ_DVS1OK,	PMIC_INT2, 1 << 3),
	DECLARE_IRQ(MAX8997_PMICIRQ_DVS2OK,	PMIC_INT2, 1 << 4),
	DECLARE_IRQ(MAX8997_PMICIRQ_DVS3OK,	PMIC_INT2, 1 << 5),
	DECLARE_IRQ(MAX8997_PMICIRQ_DVS4OK,	PMIC_INT2, 1 << 6),

	DECLARE_IRQ(MAX8997_PMICIRQ_CHGINS,	PMIC_INT3, 1 << 0),
	DECLARE_IRQ(MAX8997_PMICIRQ_CHGRM,	PMIC_INT3, 1 << 1),
	DECLARE_IRQ(MAX8997_PMICIRQ_DCINOVP,	PMIC_INT3, 1 << 2),
	DECLARE_IRQ(MAX8997_PMICIRQ_TOPOFFR,	PMIC_INT3, 1 << 3),
	DECLARE_IRQ(MAX8997_PMICIRQ_CHGRSTF,	PMIC_INT3, 1 << 5),
	DECLARE_IRQ(MAX8997_PMICIRQ_MBCHGTMEXPD,	PMIC_INT3, 1 << 7),

	DECLARE_IRQ(MAX8997_PMICIRQ_RTC60S,	PMIC_INT4, 1 << 0),
	DECLARE_IRQ(MAX8997_PMICIRQ_RTCA1,	PMIC_INT4, 1 << 1),
	DECLARE_IRQ(MAX8997_PMICIRQ_RTCA2,	PMIC_INT4, 1 << 2),
	DECLARE_IRQ(MAX8997_PMICIRQ_SMPL_INT,	PMIC_INT4, 1 << 3),
	DECLARE_IRQ(MAX8997_PMICIRQ_RTC1S,	PMIC_INT4, 1 << 4),
	DECLARE_IRQ(MAX8997_PMICIRQ_WTSR,	PMIC_INT4, 1 << 5),

	DECLARE_IRQ(MAX8997_MUICIRQ_ADCError,	MUIC_INT1, 1 << 2),
	DECLARE_IRQ(MAX8997_MUICIRQ_ADCLow,	MUIC_INT1, 1 << 1),
	DECLARE_IRQ(MAX8997_MUICIRQ_ADC,	MUIC_INT1, 1 << 0),

	DECLARE_IRQ(MAX8997_MUICIRQ_VBVolt,	MUIC_INT2, 1 << 4),
	DECLARE_IRQ(MAX8997_MUICIRQ_DBChg,	MUIC_INT2, 1 << 3),
	DECLARE_IRQ(MAX8997_MUICIRQ_DCDTmr,	MUIC_INT2, 1 << 2),
	DECLARE_IRQ(MAX8997_MUICIRQ_ChgDetRun,	MUIC_INT2, 1 << 1),
	DECLARE_IRQ(MAX8997_MUICIRQ_ChgTyp,	MUIC_INT2, 1 << 0),

	DECLARE_IRQ(MAX8997_MUICIRQ_OVP,	MUIC_INT3, 1 << 2),
};

static void max8997_irq_lock(struct irq_data *data)
{
	struct max8997_dev *max8997 = irq_data_get_irq_chip_data(data);

	mutex_lock(&max8997->irqlock);
}

static void max8997_irq_sync_unlock(struct irq_data *data)
{
	struct max8997_dev *max8997 = irq_data_get_irq_chip_data(data);
	int i;

	for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++) {
		u8 mask_reg = max8997_mask_reg[i];
		struct i2c_client *i2c = get_i2c(max8997, i);

		if (mask_reg == MAX8997_REG_INVALID ||
				IS_ERR_OR_NULL(i2c))
			continue;
		max8997->irq_masks_cache[i] = max8997->irq_masks_cur[i];

		max8997_write_reg(i2c, max8997_mask_reg[i],
				max8997->irq_masks_cur[i]);
	}

	mutex_unlock(&max8997->irqlock);
}

inline static const struct max8997_irq_data *
irq_to_max8997_irq(struct max8997_dev *max8997, struct irq_data *data)
{
	return &max8997_irqs[data->hwirq];
}

static void max8997_irq_mask(struct irq_data *data)
{
	struct max8997_dev *max8997 = irq_data_get_irq_chip_data(data);
	const struct max8997_irq_data *irq_data = irq_to_max8997_irq(max8997,
								     data);

Annotation

Implementation Notes