42 static int pcf8523_read(struct i2c_client *client, u8 reg, u8 *valuep)  in pcf8523_read()  argument
48 	msgs[0].addr = client->addr;  in pcf8523_read()
53 	msgs[1].addr = client->addr;  in pcf8523_read()
58 	err = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));  in pcf8523_read()
67 static int pcf8523_write(struct i2c_client *client, u8 reg, u8 value)  in pcf8523_write()  argument
73 	msg.addr = client->addr;  in pcf8523_write()
78 	err = i2c_transfer(client->adapter, &msg, 1);  in pcf8523_write()
85 static int pcf8523_select_capacitance(struct i2c_client *client, bool high)  in pcf8523_select_capacitance()  argument
90 	err = pcf8523_read(client, REG_CONTROL1, &value);  in pcf8523_select_capacitance()
99 	err = pcf8523_write(client, REG_CONTROL1, value);  in pcf8523_select_capacitance()
106 static int pcf8523_set_pm(struct i2c_client *client, u8 pm)  in pcf8523_set_pm()  argument
111 	err = pcf8523_read(client, REG_CONTROL3, &value);  in pcf8523_set_pm()
117 	err = pcf8523_write(client, REG_CONTROL3, value);  in pcf8523_set_pm()
124 static int pcf8523_stop_rtc(struct i2c_client *client)  in pcf8523_stop_rtc()  argument
129 	err = pcf8523_read(client, REG_CONTROL1, &value);  in pcf8523_stop_rtc()
135 	err = pcf8523_write(client, REG_CONTROL1, value);  in pcf8523_stop_rtc()
142 static int pcf8523_start_rtc(struct i2c_client *client)  in pcf8523_start_rtc()  argument
147 	err = pcf8523_read(client, REG_CONTROL1, &value);  in pcf8523_start_rtc()
153 	err = pcf8523_write(client, REG_CONTROL1, value);  in pcf8523_start_rtc()
162 	struct i2c_client *client = to_i2c_client(dev);  in pcf8523_rtc_read_time()  local
167 	msgs[0].addr = client->addr;  in pcf8523_rtc_read_time()
172 	msgs[1].addr = client->addr;  in pcf8523_rtc_read_time()
177 	err = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));  in pcf8523_rtc_read_time()
192 		err = pcf8523_write(client, REG_SECONDS, regs[0]);  in pcf8523_rtc_read_time()
196 		err = pcf8523_read(client, REG_SECONDS, &regs[0]);  in pcf8523_rtc_read_time()
217 	struct i2c_client *client = to_i2c_client(dev);  in pcf8523_rtc_set_time()  local
222 	err = pcf8523_stop_rtc(client);  in pcf8523_rtc_set_time()
235 	msg.addr = client->addr;  in pcf8523_rtc_set_time()
240 	err = i2c_transfer(client->adapter, &msg, 1);  in pcf8523_rtc_set_time()
247 		pcf8523_start_rtc(client);  in pcf8523_rtc_set_time()
251 	return pcf8523_start_rtc(client);  in pcf8523_rtc_set_time()
258 	struct i2c_client *client = to_i2c_client(dev);  in pcf8523_rtc_ioctl()  local
264 		err = pcf8523_read(client, REG_CONTROL3, &value);  in pcf8523_rtc_ioctl()
289 static int pcf8523_probe(struct i2c_client *client,  in pcf8523_probe()  argument
295 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))  in pcf8523_probe()
298 	pcf = devm_kzalloc(&client->dev, sizeof(*pcf), GFP_KERNEL);  in pcf8523_probe()
302 	err = pcf8523_select_capacitance(client, true);  in pcf8523_probe()
306 	err = pcf8523_set_pm(client, 0);  in pcf8523_probe()
310 	pcf->rtc = devm_rtc_device_register(&client->dev, DRIVER_NAME,  in pcf8523_probe()
315 	i2c_set_clientdata(client, pcf);  in pcf8523_probe()