1 files changed, 0 insertions, 160 deletions

diff --git a/drivers/staging/iio/meter/ade7854-spi.c b/drivers/staging/iio/meter/ade7854-spi.c
deleted file mode 100644
index f12a6c8b3e88..000000000000
--- a/drivers/staging/iio/meter/ade7854-spi.c
+++ /dev/null
@@ -1,160 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * ADE7854/58/68/78 Polyphase Multifunction Energy Metering IC Driver (SPI Bus)
- *
- * Copyright 2010 Analog Devices Inc.
- */
-
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-
-#include <linux/iio/iio.h>
-#include "ade7854.h"
-
-static int ade7854_spi_write_reg(struct device *dev,
-				 u16 reg_address,
-				 u32 val,
-				 int bits)
-{
-	int ret;
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	struct ade7854_state *st = iio_priv(indio_dev);
-	struct spi_transfer xfer = {
-		.tx_buf = st->tx,
-		.bits_per_word = 8,
-		.len = 4,
-	};
-
-	mutex_lock(&st->buf_lock);
-	st->tx[0] = ADE7854_WRITE_REG;
-	st->tx[1] = (reg_address >> 8) & 0xFF;
-	st->tx[2] = reg_address & 0xFF;
-	switch (bits) {
-	case 8:
-		st->tx[3] = val & 0xFF;
-		break;
-	case 16:
-		xfer.len = 5;
-		st->tx[3] = (val >> 8) & 0xFF;
-		st->tx[4] = val & 0xFF;
-		break;
-	case 24:
-		xfer.len = 6;
-		st->tx[3] = (val >> 16) & 0xFF;
-		st->tx[4] = (val >> 8) & 0xFF;
-		st->tx[5] = val & 0xFF;
-		break;
-	case 32:
-		xfer.len = 7;
-		st->tx[3] = (val >> 24) & 0xFF;
-		st->tx[4] = (val >> 16) & 0xFF;
-		st->tx[5] = (val >> 8) & 0xFF;
-		st->tx[6] = val & 0xFF;
-		break;
-	default:
-		ret = -EINVAL;
-		goto unlock;
-	}
-
-	ret = spi_sync_transfer(st->spi, &xfer, 1);
-unlock:
-	mutex_unlock(&st->buf_lock);
-
-	return ret;
-}
-
-static int ade7854_spi_read_reg(struct device *dev,
-				u16 reg_address,
-				u32 *val,
-				int bits)
-{
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	struct ade7854_state *st = iio_priv(indio_dev);
-	int ret;
-	struct spi_transfer xfers[] = {
-		{
-			.tx_buf = st->tx,
-			.bits_per_word = 8,
-			.len = 3,
-		}, {
-			.rx_buf = st->rx,
-			.bits_per_word = 8,
-			.len = bits,
-		}
-	};
-
-	mutex_lock(&st->buf_lock);
-
-	st->tx[0] = ADE7854_READ_REG;
-	st->tx[1] = (reg_address >> 8) & 0xFF;
-	st->tx[2] = reg_address & 0xFF;
-
-	ret = spi_sync_transfer(st->spi, xfers, ARRAY_SIZE(xfers));
-	if (ret < 0) {
-		dev_err(&st->spi->dev, "problem when reading register 0x%02X",
-			reg_address);
-		goto unlock;
-	}
-
-	switch (bits) {
-	case 8:
-		*val = st->rx[0];
-		break;
-	case 16:
-		*val = be16_to_cpup((const __be16 *)st->rx);
-		break;
-	case 24:
-		*val = (st->rx[0] << 16) | (st->rx[1] << 8) | st->rx[2];
-		break;
-	case 32:
-		*val = be32_to_cpup((const __be32 *)st->rx);
-		break;
-	}
-
-unlock:
-	mutex_unlock(&st->buf_lock);
-	return ret;
-}
-
-static int ade7854_spi_probe(struct spi_device *spi)
-{
-	struct ade7854_state *st;
-	struct iio_dev *indio_dev;
-
-	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
-	if (!indio_dev)
-		return -ENOMEM;
-	st = iio_priv(indio_dev);
-	spi_set_drvdata(spi, indio_dev);
-	st->read_reg = ade7854_spi_read_reg;
-	st->write_reg = ade7854_spi_write_reg;
-	st->irq = spi->irq;
-	st->spi = spi;
-
-	return ade7854_probe(indio_dev, &spi->dev);
-}
-
-static const struct spi_device_id ade7854_id[] = {
-	{ "ade7854", 0 },
-	{ "ade7858", 0 },
-	{ "ade7868", 0 },
-	{ "ade7878", 0 },
-	{ }
-};
-MODULE_DEVICE_TABLE(spi, ade7854_id);
-
-static struct spi_driver ade7854_driver = {
-	.driver = {
-		.name = "ade7854",
-	},
-	.probe = ade7854_spi_probe,
-	.id_table = ade7854_id,
-};
-module_spi_driver(ade7854_driver);
-
-MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
-MODULE_DESCRIPTION("Analog Devices ADE7854/58/68/78 SPI Driver");
-MODULE_LICENSE("GPL v2");