static int adm1275_read_word_data()

in pmbus/adm1275.c [229:338]

• 108 lines of code
• 36 McCabe index (conditional complexity)

static int adm1275_read_word_data(struct i2c_client *client, int page,
				  int phase, int reg)
{
	const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
	const struct adm1275_data *data = to_adm1275_data(info);
	int ret = 0;

	if (page > 0)
		return -ENXIO;

	switch (reg) {
	case PMBUS_IOUT_UC_FAULT_LIMIT:
		if (!data->have_uc_fault)
			return -ENXIO;
		ret = pmbus_read_word_data(client, 0, 0xff,
					   ADM1275_IOUT_WARN2_LIMIT);
		break;
	case PMBUS_IOUT_OC_FAULT_LIMIT:
		if (!data->have_oc_fault)
			return -ENXIO;
		ret = pmbus_read_word_data(client, 0, 0xff,
					   ADM1275_IOUT_WARN2_LIMIT);
		break;
	case PMBUS_VOUT_OV_WARN_LIMIT:
		if (data->have_vout)
			return -ENODATA;
		ret = pmbus_read_word_data(client, 0, 0xff,
					   ADM1075_VAUX_OV_WARN_LIMIT);
		break;
	case PMBUS_VOUT_UV_WARN_LIMIT:
		if (data->have_vout)
			return -ENODATA;
		ret = pmbus_read_word_data(client, 0, 0xff,
					   ADM1075_VAUX_UV_WARN_LIMIT);
		break;
	case PMBUS_READ_VOUT:
		if (data->have_vout)
			return -ENODATA;
		ret = pmbus_read_word_data(client, 0, 0xff,
					   ADM1075_READ_VAUX);
		break;
	case PMBUS_VIRT_READ_IOUT_MIN:
		if (!data->have_iout_min)
			return -ENXIO;
		ret = pmbus_read_word_data(client, 0, 0xff,
					   ADM1293_IOUT_MIN);
		break;
	case PMBUS_VIRT_READ_IOUT_MAX:
		ret = pmbus_read_word_data(client, 0, 0xff,
					   ADM1275_PEAK_IOUT);
		break;
	case PMBUS_VIRT_READ_VOUT_MAX:
		ret = pmbus_read_word_data(client, 0, 0xff,
					   ADM1275_PEAK_VOUT);
		break;
	case PMBUS_VIRT_READ_VIN_MAX:
		ret = pmbus_read_word_data(client, 0, 0xff,
					   ADM1275_PEAK_VIN);
		break;
	case PMBUS_VIRT_READ_PIN_MIN:
		if (!data->have_pin_min)
			return -ENXIO;
		ret = pmbus_read_word_data(client, 0, 0xff,
					   ADM1293_PIN_MIN);
		break;
	case PMBUS_VIRT_READ_PIN_MAX:
		if (!data->have_pin_max)
			return -ENXIO;
		ret = pmbus_read_word_data(client, 0, 0xff,
					   ADM1276_PEAK_PIN);
		break;
	case PMBUS_VIRT_READ_TEMP_MAX:
		if (!data->have_temp_max)
			return -ENXIO;
		ret = pmbus_read_word_data(client, 0, 0xff,
					   ADM1278_PEAK_TEMP);
		break;
	case PMBUS_VIRT_RESET_IOUT_HISTORY:
	case PMBUS_VIRT_RESET_VOUT_HISTORY:
	case PMBUS_VIRT_RESET_VIN_HISTORY:
		break;
	case PMBUS_VIRT_RESET_PIN_HISTORY:
		if (!data->have_pin_max)
			return -ENXIO;
		break;
	case PMBUS_VIRT_RESET_TEMP_HISTORY:
		if (!data->have_temp_max)
			return -ENXIO;
		break;
	case PMBUS_VIRT_POWER_SAMPLES:
		if (!data->have_power_sampling)
			return -ENXIO;
		ret = adm1275_read_pmon_config(data, client, true);
		if (ret < 0)
			break;
		ret = BIT(ret);
		break;
	case PMBUS_VIRT_IN_SAMPLES:
	case PMBUS_VIRT_CURR_SAMPLES:
		ret = adm1275_read_pmon_config(data, client, false);
		if (ret < 0)
			break;
		ret = BIT(ret);
		break;
	default:
		ret = -ENODATA;
		break;
	}
	return ret;
}