56 	struct i2c_client	*client;  member
58 	s32 (*read_block_data)(const struct i2c_client *client, u8 command,
60 	s32 (*write_block_data)(const struct i2c_client *client, u8 command,
66 static int rx8581_read_block_data(const struct i2c_client *client, u8 command,  in rx8581_read_block_data()  argument
72 		data = i2c_smbus_read_byte_data(client, command + i);  in rx8581_read_block_data()
80 static int rx8581_write_block_data(const struct i2c_client *client, u8 command,  in rx8581_write_block_data()  argument
86 		ret = i2c_smbus_write_byte_data(client, command + i,  in rx8581_write_block_data()
98 static int rx8581_get_datetime(struct i2c_client *client, struct rtc_time *tm)  in rx8581_get_datetime()  argument
102 	struct rx8581 *rx8581 = i2c_get_clientdata(client);  in rx8581_get_datetime()
109 	data = i2c_smbus_read_byte_data(client, RX8581_REG_FLAG);  in rx8581_get_datetime()
111 		dev_err(&client->dev, "Unable to read device flags\n");  in rx8581_get_datetime()
118 			err = i2c_smbus_write_byte_data(client,  in rx8581_get_datetime()
121 				dev_err(&client->dev, "Unable to write device flags\n");  in rx8581_get_datetime()
127 		err = rx8581->read_block_data(client, RX8581_REG_SC,  in rx8581_get_datetime()
130 			dev_err(&client->dev, "Unable to read date\n");  in rx8581_get_datetime()
135 		data = i2c_smbus_read_byte_data(client, RX8581_REG_FLAG);  in rx8581_get_datetime()
137 			dev_err(&client->dev, "Unable to read device flags\n");  in rx8581_get_datetime()
143 		dev_info(&client->dev,  in rx8581_get_datetime()
146 	dev_dbg(&client->dev,  in rx8581_get_datetime()
163 	dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, "  in rx8581_get_datetime()
171 		dev_err(&client->dev, "retrieved date/time is not valid.\n");  in rx8581_get_datetime()
176 static int rx8581_set_datetime(struct i2c_client *client, struct rtc_time *tm)  in rx8581_set_datetime()  argument
180 	struct rx8581 *rx8581 = i2c_get_clientdata(client);  in rx8581_set_datetime()
182 	dev_dbg(&client->dev, "%s: secs=%d, mins=%d, hours=%d, "  in rx8581_set_datetime()
203 	data = i2c_smbus_read_byte_data(client, RX8581_REG_CTRL);  in rx8581_set_datetime()
205 		dev_err(&client->dev, "Unable to read control register\n");  in rx8581_set_datetime()
209 	err = i2c_smbus_write_byte_data(client, RX8581_REG_CTRL,  in rx8581_set_datetime()
212 		dev_err(&client->dev, "Unable to write control register\n");  in rx8581_set_datetime()
217 	err = rx8581->write_block_data(client, RX8581_REG_SC, 7, buf);  in rx8581_set_datetime()
219 		dev_err(&client->dev, "Unable to write to date registers\n");  in rx8581_set_datetime()
224 	data = i2c_smbus_read_byte_data(client, RX8581_REG_FLAG);  in rx8581_set_datetime()
226 		dev_err(&client->dev, "Unable to read flag register\n");  in rx8581_set_datetime()
230 	err = i2c_smbus_write_byte_data(client, RX8581_REG_FLAG,  in rx8581_set_datetime()
233 		dev_err(&client->dev, "Unable to write flag register\n");  in rx8581_set_datetime()
238 	data = i2c_smbus_read_byte_data(client, RX8581_REG_CTRL);  in rx8581_set_datetime()
240 		dev_err(&client->dev, "Unable to read control register\n");  in rx8581_set_datetime()
244 	err = i2c_smbus_write_byte_data(client, RX8581_REG_CTRL,  in rx8581_set_datetime()
247 		dev_err(&client->dev, "Unable to write control register\n");  in rx8581_set_datetime()
269 static int rx8581_probe(struct i2c_client *client,  in rx8581_probe()  argument
274 	dev_dbg(&client->dev, "%s\n", __func__);  in rx8581_probe()
276 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)  in rx8581_probe()
277 		&& !i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))  in rx8581_probe()
280 	rx8581 = devm_kzalloc(&client->dev, sizeof(struct rx8581), GFP_KERNEL);  in rx8581_probe()
284 	i2c_set_clientdata(client, rx8581);  in rx8581_probe()
285 	rx8581->client = client;  in rx8581_probe()
287 	if (i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK)) {  in rx8581_probe()
295 	dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n");  in rx8581_probe()
297 	rx8581->rtc = devm_rtc_device_register(&client->dev,  in rx8581_probe()
301 		dev_err(&client->dev,  in rx8581_probe()