linux/drivers/platform/arm64/lenovo-yoga-c630.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2022-2024, Linaro Ltd
 * Authors:
 *    Bjorn Andersson
 *    Dmitry Baryshkov
 */
#include <linux/auxiliary_bus.h>
#include <linux/cleanup.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/irqreturn.h>
#include <linux/lockdep.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/notifier.h>
#include <linux/slab.h>
#include <linux/platform_data/lenovo-yoga-c630.h>

#define LENOVO_EC_RESPONSE_REG …
#define LENOVO_EC_REQUEST_REG …

#define LENOVO_EC_UCSI_WRITE …
#define LENOVO_EC_UCSI_READ …

#define LENOVO_EC_READ_REG …
#define LENOVO_EC_REQUEST_NEXT_EVENT …

#define LENOVO_EC_UCSI_VERSION …

struct yoga_c630_ec { … };

static int yoga_c630_ec_request(struct yoga_c630_ec *ec, u8 *req, size_t req_len,
				u8 *resp, size_t resp_len)
{ … }

int yoga_c630_ec_read8(struct yoga_c630_ec *ec, u8 addr)
{ … }
EXPORT_SYMBOL_GPL(…);

int yoga_c630_ec_read16(struct yoga_c630_ec *ec, u8 addr)
{ … }
EXPORT_SYMBOL_GPL(…);

u16 yoga_c630_ec_ucsi_get_version(struct yoga_c630_ec *ec)
{ … }
EXPORT_SYMBOL_GPL(…);

int yoga_c630_ec_ucsi_write(struct yoga_c630_ec *ec,
			    const u8 req[YOGA_C630_UCSI_WRITE_SIZE])
{ … }
EXPORT_SYMBOL_GPL(…);

int yoga_c630_ec_ucsi_read(struct yoga_c630_ec *ec,
			   u8 resp[YOGA_C630_UCSI_READ_SIZE])
{ … }
EXPORT_SYMBOL_GPL(…);

static irqreturn_t yoga_c630_ec_thread_intr(int irq, void *data)
{ … }

/**
 * yoga_c630_ec_register_notify - Register a notifier callback for EC events.
 * @ec: Yoga C630 EC
 * @nb: Notifier block pointer to register
 *
 * Return: 0 on success or negative error code.
 */
int yoga_c630_ec_register_notify(struct yoga_c630_ec *ec, struct notifier_block *nb)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * yoga_c630_ec_unregister_notify - Unregister notifier callback for EC events.
 * @ec: Yoga C630 EC
 * @nb: Notifier block pointer to unregister
 *
 * Unregister a notifier callback that was previously registered with
 * yoga_c630_ec_register_notify().
 */
void yoga_c630_ec_unregister_notify(struct yoga_c630_ec *ec, struct notifier_block *nb)
{ … }
EXPORT_SYMBOL_GPL(…);

static void yoga_c630_aux_release(struct device *dev)
{ … }

static void yoga_c630_aux_remove(void *data)
{ … }

static int yoga_c630_aux_init(struct device *parent, const char *name,
			      struct yoga_c630_ec *ec)
{ … }

static int yoga_c630_ec_probe(struct i2c_client *client)
{ … }


static const struct of_device_id yoga_c630_ec_of_match[] = …;
MODULE_DEVICE_TABLE(of, yoga_c630_ec_of_match);

static const struct i2c_device_id yoga_c630_ec_i2c_id_table[] = …;
MODULE_DEVICE_TABLE(i2c, yoga_c630_ec_i2c_id_table);

static struct i2c_driver yoga_c630_ec_i2c_driver = …;
module_i2c_driver(…) …;

MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;