1 // SPDX-License-Identifier: GPL-2.0-or-later
5  *  Copyright (c) 2010-2015 Steven Toth <stoth@kernellabs.com>
16 static int i2c_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num)  in i2c_xfer()  argument
18 	struct saa7164_i2c *bus = i2c_adap->algo_data;  in i2c_xfer()  local
19 	struct saa7164_dev *dev = bus->dev;  in i2c_xfer()
22 	dprintk(DBGLVL_I2C, "%s(num = %d)\n", __func__, num);  in i2c_xfer()
24 	for (i = 0 ; i < num; i++) {  in i2c_xfer()
25 		dprintk(DBGLVL_I2C, "%s(num = %d) addr = 0x%02x  len = 0x%x\n",  in i2c_xfer()
26 			__func__, num, msgs[i].addr, msgs[i].len);  in i2c_xfer()
28 			retval = saa7164_api_i2c_read(bus,  in i2c_xfer()
32 		} else if (i + 1 < num && (msgs[i + 1].flags & I2C_M_RD) &&  in i2c_xfer()
36 			retval = saa7164_api_i2c_read(bus, msgs[i].addr,  in i2c_xfer()
47 			retval = saa7164_api_i2c_write(bus, msgs[i].addr,  in i2c_xfer()
53 	return num;  in i2c_xfer()
69 /* ----------------------------------------------------------------------- */
81 int saa7164_i2c_register(struct saa7164_i2c *bus)  in saa7164_i2c_register()  argument
83 	struct saa7164_dev *dev = bus->dev;  in saa7164_i2c_register()
85 	dprintk(DBGLVL_I2C, "%s(bus = %d)\n", __func__, bus->nr);  in saa7164_i2c_register()
87 	bus->i2c_adap = saa7164_i2c_adap_template;  in saa7164_i2c_register()
88 	bus->i2c_client = saa7164_i2c_client_template;  in saa7164_i2c_register()
90 	bus->i2c_adap.dev.parent = &dev->pci->dev;  in saa7164_i2c_register()
92 	strscpy(bus->i2c_adap.name, bus->dev->name,  in saa7164_i2c_register()
93 		sizeof(bus->i2c_adap.name));  in saa7164_i2c_register()
95 	bus->i2c_adap.algo_data = bus;  in saa7164_i2c_register()
96 	i2c_set_adapdata(&bus->i2c_adap, bus);  in saa7164_i2c_register()
97 	i2c_add_adapter(&bus->i2c_adap);  in saa7164_i2c_register()
99 	bus->i2c_client.adapter = &bus->i2c_adap;  in saa7164_i2c_register()
101 	if (0 != bus->i2c_rc)  in saa7164_i2c_register()
102 		printk(KERN_ERR "%s: i2c bus %d register FAILED\n",  in saa7164_i2c_register()
103 			dev->name, bus->nr);  in saa7164_i2c_register()
105 	return bus->i2c_rc;  in saa7164_i2c_register()
108 int saa7164_i2c_unregister(struct saa7164_i2c *bus)  in saa7164_i2c_unregister()  argument
110 	i2c_del_adapter(&bus->i2c_adap);  in saa7164_i2c_unregister()