linux/drivers/video/fbdev/via/via_i2c.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright 1998-2009 VIA Technologies, Inc. All Rights Reserved.
 * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.

 */

#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/spinlock.h>
#include <linux/module.h>
#include <linux/via-core.h>
#include <linux/via_i2c.h>

/*
 * There can only be one set of these, so there's no point in having
 * them be dynamically allocated...
 */
#define VIAFB_NUM_I2C …
static struct via_i2c_stuff via_i2c_par[VIAFB_NUM_I2C];
static struct viafb_dev *i2c_vdev;  /* Passed in from core */

static void via_i2c_setscl(void *data, int state)
{ … }

static int via_i2c_getscl(void *data)
{ … }

static int via_i2c_getsda(void *data)
{ … }

static void via_i2c_setsda(void *data, int state)
{ … }

int viafb_i2c_readbyte(u8 adap, u8 target_addr, u8 index, u8 *pdata)
{ … }

int viafb_i2c_writebyte(u8 adap, u8 target_addr, u8 index, u8 data)
{ … }

int viafb_i2c_readbytes(u8 adap, u8 target_addr, u8 index, u8 *buff, int buff_len)
{ … }

/*
 * Allow other viafb subdevices to look up a specific adapter
 * by port name.
 */
struct i2c_adapter *viafb_find_i2c_adapter(enum viafb_i2c_adap which)
{ … }
EXPORT_SYMBOL_GPL(…);


static int create_i2c_bus(struct i2c_adapter *adapter,
			  struct i2c_algo_bit_data *algo,
			  struct via_port_cfg *adap_cfg,
			  struct pci_dev *pdev)
{ … }

static int viafb_i2c_probe(struct platform_device *platdev)
{ … }

static void viafb_i2c_remove(struct platform_device *platdev)
{ … }

static struct platform_driver via_i2c_driver = …;

int viafb_i2c_init(void)
{ … }

void viafb_i2c_exit(void)
{ … }