48 static int bh1780_write(struct bh1780_data *ddata, u8 reg, u8 val, char *msg)  in bh1780_write()  argument
50 	int ret = i2c_smbus_write_byte_data(ddata->client, reg, val);  in bh1780_write()
52 		dev_err(&ddata->client->dev,  in bh1780_write()
58 static int bh1780_read(struct bh1780_data *ddata, u8 reg, char *msg)  in bh1780_read()  argument
60 	int ret = i2c_smbus_read_byte_data(ddata->client, reg);  in bh1780_read()
62 		dev_err(&ddata->client->dev,  in bh1780_read()
72 	struct bh1780_data *ddata = platform_get_drvdata(pdev);  in bh1780_show_lux()  local
75 	lsb = bh1780_read(ddata, BH1780_REG_DLOW, "DLOW");  in bh1780_show_lux()
79 	msb = bh1780_read(ddata, BH1780_REG_DHIGH, "DHIGH");  in bh1780_show_lux()
91 	struct bh1780_data *ddata = platform_get_drvdata(pdev);  in bh1780_show_power_state()  local
94 	state = bh1780_read(ddata, BH1780_REG_CONTROL, "CONTROL");  in bh1780_show_power_state()
106 	struct bh1780_data *ddata = platform_get_drvdata(pdev);  in bh1780_store_power_state()  local
117 	mutex_lock(&ddata->lock);  in bh1780_store_power_state()
119 	error = bh1780_write(ddata, BH1780_REG_CONTROL, val, "CONTROL");  in bh1780_store_power_state()
121 		mutex_unlock(&ddata->lock);  in bh1780_store_power_state()
126 	ddata->power_state = val;  in bh1780_store_power_state()
127 	mutex_unlock(&ddata->lock);  in bh1780_store_power_state()
151 	struct bh1780_data *ddata = NULL;  in bh1780_probe()  local
159 	ddata = kzalloc(sizeof(struct bh1780_data), GFP_KERNEL);  in bh1780_probe()
160 	if (ddata == NULL) {  in bh1780_probe()
165 	ddata->client = client;  in bh1780_probe()
166 	i2c_set_clientdata(client, ddata);  in bh1780_probe()
168 	ret = bh1780_read(ddata, BH1780_REG_PARTID, "PART ID");  in bh1780_probe()
175 	mutex_init(&ddata->lock);  in bh1780_probe()
184 	kfree(ddata);  in bh1780_probe()
190 	struct bh1780_data *ddata;  in bh1780_remove()  local
192 	ddata = i2c_get_clientdata(client);  in bh1780_remove()
194 	kfree(ddata);  in bh1780_remove()
202 	struct bh1780_data *ddata;  in bh1780_suspend()  local
206 	ddata = i2c_get_clientdata(client);  in bh1780_suspend()
207 	state = bh1780_read(ddata, BH1780_REG_CONTROL, "CONTROL");  in bh1780_suspend()
211 	ddata->power_state = state & BH1780_POWMASK;  in bh1780_suspend()
213 	ret = bh1780_write(ddata, BH1780_REG_CONTROL, BH1780_POFF,  in bh1780_suspend()
224 	struct bh1780_data *ddata;  in bh1780_resume()  local
228 	ddata = i2c_get_clientdata(client);  in bh1780_resume()
229 	state = ddata->power_state;  in bh1780_resume()
230 	ret = bh1780_write(ddata, BH1780_REG_CONTROL, state,  in bh1780_resume()