Lines Matching refs:sca_data

251 static int sca3300_transfer(struct sca3300_data *sca_data, int *val)
260 			.tx_buf = sca_data->txbuf,
261 			.len = ARRAY_SIZE(sca_data->txbuf),
266 			.rx_buf = sca_data->rxbuf,
267 			.len = ARRAY_SIZE(sca_data->rxbuf),
273 	crc = ~crc8(sca3300_crc_table, &sca_data->txbuf[0], 3, CRC8_INIT_VALUE);
274 	sca_data->txbuf[3] = crc;
276 	ret = spi_sync_transfer(sca_data->spi, xfers, ARRAY_SIZE(xfers));
278 		dev_err(&sca_data->spi->dev,
283 	crc = ~crc8(sca3300_crc_table, &sca_data->rxbuf[0], 3, CRC8_INIT_VALUE);
284 	if (sca_data->rxbuf[3] != crc) {
285 		dev_err(&sca_data->spi->dev, "CRC checksum mismatch");
290 	rs = sca_data->rxbuf[0] & SCA3300_MASK_RS_STATUS;
294 	*val = sign_extend32(get_unaligned_be16(&sca_data->rxbuf[1]), 15);
299 static int sca3300_error_handler(struct sca3300_data *sca_data)
304 	mutex_lock(&sca_data->lock);
305 	sca_data->txbuf[0] = SCA3300_REG_STATUS << 2;
306 	ret = sca3300_transfer(sca_data, &val);
307 	mutex_unlock(&sca_data->lock);
313 		dev_err(&sca_data->spi->dev,
318 	dev_err(&sca_data->spi->dev, "device status: 0x%lx\n",
324 static int sca3300_read_reg(struct sca3300_data *sca_data, u8 reg, int *val)
328 	mutex_lock(&sca_data->lock);
329 	sca_data->txbuf[0] = reg << 2;
330 	ret = sca3300_transfer(sca_data, val);
331 	mutex_unlock(&sca_data->lock);
335 	return sca3300_error_handler(sca_data);
338 static int sca3300_write_reg(struct sca3300_data *sca_data, u8 reg, int val)
343 	mutex_lock(&sca_data->lock);
345 	sca_data->txbuf[0] = BIT(7) | (reg << 2);
346 	put_unaligned_be16(val, &sca_data->txbuf[1]);
347 	ret = sca3300_transfer(sca_data, &reg_val);
348 	mutex_unlock(&sca_data->lock);
352 	return sca3300_error_handler(sca_data);
355 static int sca3300_set_op_mode(struct sca3300_data *sca_data, int index)
357 	if ((index < 0) || (index >= sca_data->chip->num_avail_modes))
360 	return sca3300_write_reg(sca_data, SCA3300_REG_MODE,
361 				 sca_data->chip->avail_modes_table[index]);
364 static int sca3300_get_op_mode(struct sca3300_data *sca_data, int *index)
370 	ret = sca3300_read_reg(sca_data, SCA3300_REG_MODE, &reg_val);
374 	for (i = 0; i < sca_data->chip->num_avail_modes; i++) {
375 		if (sca_data->chip->avail_modes_table[i] == reg_val)
378 	if (i == sca_data->chip->num_avail_modes)
521 static int sca3300_init(struct sca3300_data *sca_data,
528 	ret = sca3300_write_reg(sca_data, SCA3300_REG_MODE,
540 	ret = sca3300_read_reg(sca_data, SCA3300_REG_WHOAMI, &value);
549 		dev_err(&sca_data->spi->dev, "unknown chip id %x\n", value);
553 	sca_data->chip = &sca3300_chip_tbl[i];
555 	if (sca_data->chip->angle_supported) {
556 		ret = sca3300_write_reg(sca_data, SCL3300_REG_ANG_CTRL,
629 	struct sca3300_data *sca_data;
633 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*sca_data));
637 	sca_data = iio_priv(indio_dev);
638 	mutex_init(&sca_data->lock);
639 	sca_data->spi = spi;
645 	ret = sca3300_init(sca_data, indio_dev);
651 	indio_dev->name = sca_data->chip->name;
653 	indio_dev->channels = sca_data->chip->channels;
654 	indio_dev->num_channels = sca_data->chip->num_channels;
655 	indio_dev->available_scan_masks = sca_data->chip->scan_masks;