Lines Matching refs:st
52 static int ad7266_wakeup(struct ad7266_state *st) in ad7266_wakeup() argument
55 return spi_read(st->spi, &st->data.sample[0], 2); in ad7266_wakeup()
58 static int ad7266_powerdown(struct ad7266_state *st) in ad7266_powerdown() argument
61 return spi_read(st->spi, &st->data.sample[0], 1); in ad7266_powerdown()
66 struct ad7266_state *st = iio_priv(indio_dev); in ad7266_preenable() local
67 return ad7266_wakeup(st); in ad7266_preenable()
72 struct ad7266_state *st = iio_priv(indio_dev); in ad7266_postdisable() local
73 return ad7266_powerdown(st); in ad7266_postdisable()
87 struct ad7266_state *st = iio_priv(indio_dev); in ad7266_trigger_handler() local
90 ret = spi_read(st->spi, st->data.sample, 4); in ad7266_trigger_handler()
92 iio_push_to_buffers_with_timestamp(indio_dev, &st->data, in ad7266_trigger_handler()
101 static void ad7266_select_input(struct ad7266_state *st, unsigned int nr) in ad7266_select_input() argument
105 if (st->fixed_addr) in ad7266_select_input()
108 switch (st->mode) { in ad7266_select_input()
121 gpio_set_value(st->gpios[i].gpio, (bool)(nr & BIT(i))); in ad7266_select_input()
127 struct ad7266_state *st = iio_priv(indio_dev); in ad7266_update_scan_mode() local
130 ad7266_select_input(st, nr); in ad7266_update_scan_mode()
135 static int ad7266_read_single(struct ad7266_state *st, int *val, in ad7266_read_single() argument
140 ad7266_select_input(st, address); in ad7266_read_single()
142 ret = spi_sync(st->spi, &st->single_msg); in ad7266_read_single()
143 *val = be16_to_cpu(st->data.sample[address % 2]); in ad7266_read_single()
151 struct ad7266_state *st = iio_priv(indio_dev); in ad7266_read_raw() local
160 ret = ad7266_read_single(st, val, chan->address); in ad7266_read_raw()
170 scale_mv = st->vref_mv; in ad7266_read_raw()
171 if (st->mode == AD7266_MODE_DIFF) in ad7266_read_raw()
173 if (st->range == AD7266_RANGE_2VREF) in ad7266_read_raw()
180 if (st->range == AD7266_RANGE_2VREF && in ad7266_read_raw()
181 st->mode != AD7266_MODE_DIFF) in ad7266_read_raw()
363 struct ad7266_state *st = iio_priv(indio_dev); in ad7266_init_channels() local
368 is_differential = st->mode != AD7266_MODE_SINGLE_ENDED; in ad7266_init_channels()
369 is_signed = (st->range == AD7266_RANGE_2VREF) | in ad7266_init_channels()
370 (st->mode == AD7266_MODE_DIFF); in ad7266_init_channels()
372 i = AD7266_CHAN_INFO_INDEX(is_differential, is_signed, st->fixed_addr); in ad7266_init_channels()
389 struct ad7266_state *st; in ad7266_probe() local
393 indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st)); in ad7266_probe()
397 st = iio_priv(indio_dev); in ad7266_probe()
399 st->reg = devm_regulator_get(&spi->dev, "vref"); in ad7266_probe()
400 if (!IS_ERR_OR_NULL(st->reg)) { in ad7266_probe()
401 ret = regulator_enable(st->reg); in ad7266_probe()
405 ret = regulator_get_voltage(st->reg); in ad7266_probe()
409 st->vref_mv = ret / 1000; in ad7266_probe()
412 st->vref_mv = 2500; in ad7266_probe()
416 st->fixed_addr = pdata->fixed_addr; in ad7266_probe()
417 st->mode = pdata->mode; in ad7266_probe()
418 st->range = pdata->range; in ad7266_probe()
420 if (!st->fixed_addr) { in ad7266_probe()
421 for (i = 0; i < ARRAY_SIZE(st->gpios); ++i) { in ad7266_probe()
422 st->gpios[i].gpio = pdata->addr_gpios[i]; in ad7266_probe()
423 st->gpios[i].flags = GPIOF_OUT_INIT_LOW; in ad7266_probe()
424 st->gpios[i].label = ad7266_gpio_labels[i]; in ad7266_probe()
426 ret = gpio_request_array(st->gpios, in ad7266_probe()
427 ARRAY_SIZE(st->gpios)); in ad7266_probe()
432 st->fixed_addr = true; in ad7266_probe()
433 st->range = AD7266_RANGE_VREF; in ad7266_probe()
434 st->mode = AD7266_MODE_DIFF; in ad7266_probe()
438 st->spi = spi; in ad7266_probe()
448 st->single_xfer[0].rx_buf = &st->data.sample[0]; in ad7266_probe()
449 st->single_xfer[0].len = 2; in ad7266_probe()
450 st->single_xfer[0].cs_change = 1; in ad7266_probe()
452 st->single_xfer[1].rx_buf = st->data.sample; in ad7266_probe()
453 st->single_xfer[1].len = 4; in ad7266_probe()
454 st->single_xfer[1].cs_change = 1; in ad7266_probe()
456 st->single_xfer[2].tx_buf = &st->data.sample[0]; in ad7266_probe()
457 st->single_xfer[2].len = 1; in ad7266_probe()
459 spi_message_init(&st->single_msg); in ad7266_probe()
460 spi_message_add_tail(&st->single_xfer[0], &st->single_msg); in ad7266_probe()
461 spi_message_add_tail(&st->single_xfer[1], &st->single_msg); in ad7266_probe()
462 spi_message_add_tail(&st->single_xfer[2], &st->single_msg); in ad7266_probe()
478 if (!st->fixed_addr) in ad7266_probe()
479 gpio_free_array(st->gpios, ARRAY_SIZE(st->gpios)); in ad7266_probe()
481 if (!IS_ERR_OR_NULL(st->reg)) in ad7266_probe()
482 regulator_disable(st->reg); in ad7266_probe()
490 struct ad7266_state *st = iio_priv(indio_dev); in ad7266_remove() local
494 if (!st->fixed_addr) in ad7266_remove()
495 gpio_free_array(st->gpios, ARRAY_SIZE(st->gpios)); in ad7266_remove()
496 if (!IS_ERR_OR_NULL(st->reg)) in ad7266_remove()
497 regulator_disable(st->reg); in ad7266_remove()