49 static int bh1780_write(struct bh1780_data *ddata, u8 reg, u8 val, char *msg)  in bh1780_write()  argument
51 	int ret = i2c_smbus_write_byte_data(ddata->client, reg, val);  in bh1780_write()
53 		dev_err(&ddata->client->dev,  in bh1780_write()
59 static int bh1780_read(struct bh1780_data *ddata, u8 reg, char *msg)  in bh1780_read()  argument
61 	int ret = i2c_smbus_read_byte_data(ddata->client, reg);  in bh1780_read()
63 		dev_err(&ddata->client->dev,  in bh1780_read()
73 	struct bh1780_data *ddata = platform_get_drvdata(pdev);  in bh1780_show_lux()  local
76 	lsb = bh1780_read(ddata, BH1780_REG_DLOW, "DLOW");  in bh1780_show_lux()
80 	msb = bh1780_read(ddata, BH1780_REG_DHIGH, "DHIGH");  in bh1780_show_lux()
92 	struct bh1780_data *ddata = platform_get_drvdata(pdev);  in bh1780_show_power_state()  local
95 	state = bh1780_read(ddata, BH1780_REG_CONTROL, "CONTROL");  in bh1780_show_power_state()
107 	struct bh1780_data *ddata = platform_get_drvdata(pdev);  in bh1780_store_power_state()  local
118 	mutex_lock(&ddata->lock);  in bh1780_store_power_state()
120 	error = bh1780_write(ddata, BH1780_REG_CONTROL, val, "CONTROL");  in bh1780_store_power_state()
122 		mutex_unlock(&ddata->lock);  in bh1780_store_power_state()
127 	ddata->power_state = val;  in bh1780_store_power_state()
128 	mutex_unlock(&ddata->lock);  in bh1780_store_power_state()
152 	struct bh1780_data *ddata;  in bh1780_probe()  local
158 	ddata = devm_kzalloc(&client->dev, sizeof(struct bh1780_data),  in bh1780_probe()
160 	if (ddata == NULL)  in bh1780_probe()
163 	ddata->client = client;  in bh1780_probe()
164 	i2c_set_clientdata(client, ddata);  in bh1780_probe()
166 	ret = bh1780_read(ddata, BH1780_REG_PARTID, "PART ID");  in bh1780_probe()
173 	mutex_init(&ddata->lock);  in bh1780_probe()
188 	struct bh1780_data *ddata;  in bh1780_suspend()  local
192 	ddata = i2c_get_clientdata(client);  in bh1780_suspend()
193 	state = bh1780_read(ddata, BH1780_REG_CONTROL, "CONTROL");  in bh1780_suspend()
197 	ddata->power_state = state & BH1780_POWMASK;  in bh1780_suspend()
199 	ret = bh1780_write(ddata, BH1780_REG_CONTROL, BH1780_POFF,  in bh1780_suspend()
210 	struct bh1780_data *ddata;  in bh1780_resume()  local
214 	ddata = i2c_get_clientdata(client);  in bh1780_resume()
215 	state = ddata->power_state;  in bh1780_resume()
216 	ret = bh1780_write(ddata, BH1780_REG_CONTROL, state,  in bh1780_resume()