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regmap.h

/* SPDX-License-Identifier: GPL-2.0-only */ #ifndef _LINUX_GPIO_REGMAP_H #define _LINUX_GPIO_REGMAP_H struct device; struct fwnode_handle; struct gpio_regmap; struct irq_domain; struct regmap; #define GPIO_REGMAP_ADDR_ZERO ((unsigned int)(-1)) #define GPIO_REGMAP_ADDR(addr) ((addr) ? : GPIO_REGMAP_ADDR_ZERO) /** * struct gpio_regmap_config - Description of a generic regmap gpio_chip. * @parent: The parent device * @regmap: The regmap used to access the registers * given, the name of the device is used * @fwnode: (Optional) The firmware node. * If not given, the fwnode of the parent is used. * @label: (Optional) Descriptive name for GPIO controller. * If not given, the name of the device is used. * @ngpio: Number of GPIOs * @names: (Optional) Array of names for gpios * @reg_dat_base: (Optional) (in) register base address * @reg_set_base: (Optional) set register base address * @reg_clr_base: (Optional) clear register base address * @reg_dir_in_base: (Optional) in setting register base address * @reg_dir_out_base: (Optional) out setting register base address * @reg_stride: (Optional) May be set if the registers (of the * same type, dat, set, etc) are not consecutive. * @ngpio_per_reg: Number of GPIOs per register * @irq_domain: (Optional) IRQ domain if the controller is * interrupt-capable * @reg_mask_xlate: (Optional) Translates base address and GPIO * offset to a register/bitmask pair. If not * given the default gpio_regmap_simple_xlate() * is used. * @fixed_direction_output: * (Optional) Bitmap representing the fixed direction of * the GPIO lines. Useful when there are GPIO lines with a * fixed direction mixed together in the same register. * @drvdata: (Optional) Pointer to driver specific data which is * not used by gpio-remap but is provided "as is" to the * driver callback(s). * @regmap_irq_chip: (Optional) Pointer on an regmap_irq_chip structure. If * set, a regmap-irq device will be created and the IRQ * domain will be set accordingly. * @regmap_irq_line (Optional) The IRQ the device uses to signal interrupts. * @regmap_irq_flags (Optional) The IRQF_ flags to use for the interrupt. * * The ->reg_mask_xlate translates a given base address and GPIO offset to * register and mask pair. The base address is one of the given register * base addresses in this structure. * * Although all register base addresses are marked as optional, there are * several rules: * 1. if you only have @reg_dat_base set, then it is input-only * 2. if you only have @reg_set_base set, then it is output-only * 3. if you have either @reg_dir_in_base or @reg_dir_out_base set, then * you have to set both @reg_dat_base and @reg_set_base * 4. if you have @reg_set_base set, you may also set @reg_clr_base to have * two different registers for setting and clearing the output. This is * also valid for the output-only case. * 5. @reg_dir_in_base and @reg_dir_out_base are exclusive; is there really * hardware which has redundant registers? * * Note: All base addresses may have the special value %GPIO_REGMAP_ADDR_ZERO * which forces the address to the value 0. */ struct gpio_regmap_config { struct device *parent; struct regmap *regmap; struct fwnode_handle *fwnode; const char *label; int ngpio; const char *const *names; unsigned int reg_dat_base; unsigned int reg_set_base; unsigned int reg_clr_base; unsigned int reg_dir_in_base; unsigned int reg_dir_out_base; int reg_stride; int ngpio_per_reg; struct irq_domain *irq_domain; unsigned long *fixed_direction_output; #ifdef CONFIG_REGMAP_IRQ struct regmap_irq_chip *regmap_irq_chip; int regmap_irq_line; unsigned long regmap_irq_flags; #endif int (*reg_mask_xlate)(struct gpio_regmap *gpio, unsigned int base, unsigned int offset, unsigned int *reg, unsigned int *mask); void *drvdata; }; struct gpio_regmap *gpio_regmap_register(const struct gpio_regmap_config *config); void gpio_regmap_unregister(struct gpio_regmap *gpio); struct gpio_regmap *devm_gpio_regmap_register(struct device *dev, const struct gpio_regmap_config *config); void *gpio_regmap_get_drvdata(struct gpio_regmap *gpio); #endif /* _LINUX_GPIO_REGMAP_H */

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docroot: /var/www/469ed2f6-4d4b-4a8a-9f5e-ee4ef04d3bc8/public_html

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curdir: /usr/src/linux-headers-6.8.0-117/include/linux/gpio

	.		4096
	..		69632
X	aspeed.h		482
X	consumer.h		18723
X	driver.h		27534
X	gpio-reg.h		437
X	legacy-of-mm-gpiochip.h		947
X	machine.h		4453
X	property.h		293
X	regmap.h		4304