Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /* dvb-usb-i2c.c is part of the DVB USB library.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@posteo.de)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * see dvb-usb-init.c for copyright information.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * This file contains functions for (de-)initializing an I2C adapter.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include "dvb-usb-common.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) int dvb_usb_i2c_init(struct dvb_usb_device *d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	if (!(d->props.caps & DVB_USB_IS_AN_I2C_ADAPTER))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	if (d->props.i2c_algo == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 		err("no i2c algorithm specified");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 		ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 		goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	strscpy(d->i2c_adap.name, d->desc->name, sizeof(d->i2c_adap.name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	d->i2c_adap.algo      = d->props.i2c_algo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	d->i2c_adap.algo_data = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	d->i2c_adap.dev.parent = &d->udev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	i2c_set_adapdata(&d->i2c_adap, d);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	ret = i2c_add_adapter(&d->i2c_adap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		err("could not add i2c adapter");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 		goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	d->state |= DVB_USB_STATE_I2C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) int dvb_usb_i2c_exit(struct dvb_usb_device *d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	if (d->state & DVB_USB_STATE_I2C)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 		i2c_del_adapter(&d->i2c_adap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	d->state &= ~DVB_USB_STATE_I2C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }