iio/proximity/rfd77402.c

95 	int ret;
97 	ret = i2c_smbus_write_byte_data(client, RFD77402_CMD_R,
99 	if (ret < 0)
100 		return ret;
104 	ret = i2c_smbus_read_word_data(client, RFD77402_STATUS_R);
105 	if (ret < 0)
106 		return ret;
107 	if ((ret & RFD77402_STATUS_PM_MASK) != check)
115 	int ret;
118 	ret = rfd77402_set_state(client, RFD77402_CMD_MCPU_ON,
120 	if (ret < 0)
121 		return ret;
123 	ret = i2c_smbus_write_byte_data(client, RFD77402_CMD_R,
126 	if (ret < 0)
130 		ret = i2c_smbus_read_byte_data(client, RFD77402_ICSR);
131 		if (ret < 0)
133 		if (ret & RFD77402_ICSR_RESULT)
139 		ret = -ETIMEDOUT;
143 	ret = i2c_smbus_read_word_data(client, RFD77402_RESULT_R);
144 	if (ret < 0)
147 	if ((ret & RFD77402_RESULT_ERR_MASK) ||
148 	    !(ret & RFD77402_RESULT_VALID)) {
149 		ret = -EIO;
153 	return (ret & RFD77402_RESULT_DIST_MASK) >> 2;
158 	return ret;
166 	int ret;
171 		ret = rfd77402_measure(data->client);
173 		if (ret < 0)
174 			return ret;
175 		*val = ret;
193 	int ret, i;
195 	ret = rfd77402_set_state(client, RFD77402_CMD_STANDBY,
197 	if (ret < 0)
198 		return ret;
201 	ret = i2c_smbus_write_byte_data(client, RFD77402_ICSR,
203 	if (ret < 0)
204 		return ret;
207 	ret = i2c_smbus_write_word_data(client, RFD77402_I2C_INIT_CFG,
212 	if (ret < 0)
213 		return ret;
216 	ret = i2c_smbus_write_word_data(client, RFD77402_PMU_CFG, 0x0500);
217 	if (ret < 0)
218 		return ret;
220 	ret = rfd77402_set_state(client, RFD77402_CMD_MCPU_OFF,
222 	if (ret < 0)
223 		return ret;
226 	ret = i2c_smbus_write_word_data(client, RFD77402_PMU_CFG, 0x0600);
227 	if (ret < 0)
228 		return ret;
230 	ret = rfd77402_set_state(client, RFD77402_CMD_MCPU_ON,
232 	if (ret < 0)
233 		return ret;
236 		ret = i2c_smbus_write_word_data(client,
239 		if (ret < 0)
240 			return ret;
243 	ret = rfd77402_set_state(client, RFD77402_CMD_STANDBY,
246 	return ret;
264 	int ret;
266 	ret = i2c_smbus_read_word_data(client, RFD77402_MOD_CHIP_ID);
267 	if (ret < 0)
268 		return ret;
269 	if (ret != 0xad01 && ret != 0xad02) /* known chip ids */
286 	ret = rfd77402_init(client);
287 	if (ret < 0)
288 		return ret;
290 	ret = devm_add_action_or_reset(&client->dev, rfd77402_disable, client);
291 	if (ret)
292 		return ret;