linux/drivers/gpio/gpio-sch.c

// SPDX-License-Identifier: GPL-2.0
/*
 * GPIO interface for Intel Poulsbo SCH
 *
 *  Copyright (c) 2010 CompuLab Ltd
 *  Author: Denis Turischev <[email protected]>
 */

#include <linux/acpi.h>
#include <linux/bitops.h>
#include <linux/errno.h>
#include <linux/gpio/driver.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci_ids.h>
#include <linux/platform_device.h>
#include <linux/types.h>

#define GEN …
#define GIO …
#define GLV …
#define GTPE …
#define GTNE …
#define GGPE …
#define GSMI …
#define GTS …

#define CORE_BANK_OFFSET …
#define RESUME_BANK_OFFSET …

/*
 * iLB datasheet describes GPE0BLK registers, in particular GPE0E.GPIO bit.
 * Document Number: 328195-001
 */
#define GPE0E_GPIO …

struct sch_gpio { … };

static unsigned int sch_gpio_offset(struct sch_gpio *sch, unsigned int gpio,
				unsigned int reg)
{ … }

static unsigned int sch_gpio_bit(struct sch_gpio *sch, unsigned int gpio)
{ … }

static int sch_gpio_reg_get(struct sch_gpio *sch, unsigned int gpio, unsigned int reg)
{ … }

static void sch_gpio_reg_set(struct sch_gpio *sch, unsigned int gpio, unsigned int reg,
			     int val)
{ … }

static int sch_gpio_direction_in(struct gpio_chip *gc, unsigned int gpio_num)
{ … }

static int sch_gpio_get(struct gpio_chip *gc, unsigned int gpio_num)
{ … }

static void sch_gpio_set(struct gpio_chip *gc, unsigned int gpio_num, int val)
{ … }

static int sch_gpio_direction_out(struct gpio_chip *gc, unsigned int gpio_num,
				  int val)
{ … }

static int sch_gpio_get_direction(struct gpio_chip *gc, unsigned int gpio_num)
{ … }

static const struct gpio_chip sch_gpio_chip = …;

static int sch_irq_type(struct irq_data *d, unsigned int type)
{ … }

static void sch_irq_ack(struct irq_data *d)
{ … }

static void sch_irq_mask_unmask(struct gpio_chip *gc, irq_hw_number_t gpio_num, int val)
{ … }

static void sch_irq_mask(struct irq_data *d)
{ … }

static void sch_irq_unmask(struct irq_data *d)
{ … }

static const struct irq_chip sch_irqchip = …;

static u32 sch_gpio_gpe_handler(acpi_handle gpe_device, u32 gpe, void *context)
{ … }

static void sch_gpio_remove_gpe_handler(void *data)
{ … }

static int sch_gpio_install_gpe_handler(struct sch_gpio *sch)
{ … }

static int sch_gpio_probe(struct platform_device *pdev)
{ … }

static struct platform_driver sch_gpio_driver = …;

module_platform_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;
MODULE_ALIAS(…) …;