int lis3l02dq_initialize_ring(struct iio_ring_buffer *ring) { return iio_ring_buffer_register(ring, 0); }
int adis16209_initialize_ring(struct iio_ring_buffer *ring) { return iio_ring_buffer_register(ring, 0); }
int max1363_initialize_ring(struct iio_ring_buffer *ring) { return iio_ring_buffer_register(ring); };
static int __devinit ad7887_probe(struct spi_device *spi) { struct ad7887_platform_data *pdata = spi->dev.platform_data; struct ad7887_state *st; int ret, voltage_uv = 0; st = kzalloc(sizeof(*st), GFP_KERNEL); if (st == NULL) { ret = -ENOMEM; goto error_ret; } st->reg = regulator_get(&spi->dev, "vcc"); if (!IS_ERR(st->reg)) { ret = regulator_enable(st->reg); if (ret) goto error_put_reg; voltage_uv = regulator_get_voltage(st->reg); } st->chip_info = &ad7887_chip_info_tbl[spi_get_device_id(spi)->driver_data]; spi_set_drvdata(spi, st); atomic_set(&st->protect_ring, 0); st->spi = spi; st->indio_dev = iio_allocate_device(); if (st->indio_dev == NULL) { ret = -ENOMEM; goto error_disable_reg; } /* Estabilish that the iio_dev is a child of the spi device */ st->indio_dev->dev.parent = &spi->dev; st->indio_dev->attrs = &ad7887_attribute_group; st->indio_dev->dev_data = (void *)(st); st->indio_dev->driver_module = THIS_MODULE; st->indio_dev->modes = INDIO_DIRECT_MODE; /* Setup default message */ st->tx_cmd_buf[0] = AD7887_CH_AIN0 | AD7887_PM_MODE4 | ((pdata && pdata->use_onchip_ref) ? 0 : AD7887_REF_DIS); st->xfer[0].rx_buf = &st->data[0]; st->xfer[0].tx_buf = &st->tx_cmd_buf[0]; st->xfer[0].len = 2; spi_message_init(&st->msg[AD7887_CH0]); spi_message_add_tail(&st->xfer[0], &st->msg[AD7887_CH0]); if (pdata && pdata->en_dual) { st->tx_cmd_buf[0] |= AD7887_DUAL | AD7887_REF_DIS; st->tx_cmd_buf[2] = AD7887_CH_AIN1 | AD7887_DUAL | AD7887_REF_DIS | AD7887_PM_MODE4; st->tx_cmd_buf[4] = AD7887_CH_AIN0 | AD7887_DUAL | AD7887_REF_DIS | AD7887_PM_MODE4; st->tx_cmd_buf[6] = AD7887_CH_AIN1 | AD7887_DUAL | AD7887_REF_DIS | AD7887_PM_MODE4; st->xfer[1].rx_buf = &st->data[0]; st->xfer[1].tx_buf = &st->tx_cmd_buf[2]; st->xfer[1].len = 2; st->xfer[2].rx_buf = &st->data[2]; st->xfer[2].tx_buf = &st->tx_cmd_buf[4]; st->xfer[2].len = 2; spi_message_init(&st->msg[AD7887_CH0_CH1]); spi_message_add_tail(&st->xfer[1], &st->msg[AD7887_CH0_CH1]); spi_message_add_tail(&st->xfer[2], &st->msg[AD7887_CH0_CH1]); st->xfer[3].rx_buf = &st->data[0]; st->xfer[3].tx_buf = &st->tx_cmd_buf[6]; st->xfer[3].len = 2; spi_message_init(&st->msg[AD7887_CH1]); spi_message_add_tail(&st->xfer[3], &st->msg[AD7887_CH1]); st->en_dual = true; if (pdata && pdata->vref_mv) st->int_vref_mv = pdata->vref_mv; else if (voltage_uv) st->int_vref_mv = voltage_uv / 1000; else dev_warn(&spi->dev, "reference voltage unspecified\n"); } else { if (pdata && pdata->vref_mv) st->int_vref_mv = pdata->vref_mv; else if (pdata && pdata->use_onchip_ref) st->int_vref_mv = st->chip_info->int_vref_mv; else dev_warn(&spi->dev, "reference voltage unspecified\n"); } ret = ad7887_register_ring_funcs_and_init(st->indio_dev); if (ret) goto error_free_device; ret = iio_device_register(st->indio_dev); if (ret) goto error_free_device; ret = iio_ring_buffer_register(st->indio_dev->ring, 0); if (ret) goto error_cleanup_ring; return 0; error_cleanup_ring: ad7887_ring_cleanup(st->indio_dev); iio_device_unregister(st->indio_dev); error_free_device: iio_free_device(st->indio_dev); error_disable_reg: if (!IS_ERR(st->reg)) regulator_disable(st->reg); error_put_reg: if (!IS_ERR(st->reg)) regulator_put(st->reg); kfree(st); error_ret: return ret; }