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From:   Himanshu Jha <himanshujha199640@gmail.com>
To:     jic23@kernel.org
Cc:     lars@metafoo.de, Michael.Hennerich@analog.com, knaack.h@gmx.de,
        pmeerw@pmeerw.net, gregkh@linuxfoundation.org,
        linux-iio@vger.kernel.org, devel@driverdev.osuosl.org,
        linux-kernel@vger.kernel.org, 21cnbao@gmail.com,
        Himanshu Jha <himanshujha199640@gmail.com>
Subject: [PATCH 4/4] Staging: iio: accel: adis16201: Move adis16201 driver out of staging
Date:   Fri, 23 Mar 2018 00:42:45 +0530
Message-Id: <1521745965-26972-4-git-send-email-himanshujha199640@gmail.com>
In-Reply-To: <1521745965-26972-1-git-send-email-himanshujha199640@gmail.com>
References: <1521230786-18155-10-git-send-email-himanshujha199640@gmail.com>
 <1521745965-26972-1-git-send-email-himanshujha199640@gmail.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Move adis16201 driver out of staging and merge into mainline
IIO subsystem.

Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
---
 drivers/iio/accel/Kconfig             |  12 ++
 drivers/iio/accel/Makefile            |   1 +
 drivers/iio/accel/adis16201.c         | 321 ++++++++++++++++++++++++++++++++++
 drivers/staging/iio/accel/Kconfig     |  12 --
 drivers/staging/iio/accel/Makefile    |   1 -
 drivers/staging/iio/accel/adis16201.c | 321 ----------------------------------
 6 files changed, 334 insertions(+), 334 deletions(-)
 create mode 100644 drivers/iio/accel/adis16201.c
 delete mode 100644 drivers/staging/iio/accel/adis16201.c

diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
index c6d9517..9416c6f 100644
--- a/drivers/iio/accel/Kconfig
+++ b/drivers/iio/accel/Kconfig
@@ -5,6 +5,18 @@
 
 menu "Accelerometers"
 
+config ADIS16201
+        tristate "Analog Devices ADIS16201 Dual-Axis Digital Inclinometer and Accelerometer"
+        depends on SPI
+        select IIO_ADIS_LIB
+        select IIO_ADIS_LIB_BUFFER if IIO_BUFFER
+        help
+          Say Y here to build support for Analog Devices adis16201 dual-axis
+          digital inclinometer and accelerometer.
+
+          To compile this driver as a module, say M here: the module will
+          be called adis16201.
+
 config ADXL345
 	tristate
 
diff --git a/drivers/iio/accel/Makefile b/drivers/iio/accel/Makefile
index 368aedb..7832ec9 100644
--- a/drivers/iio/accel/Makefile
+++ b/drivers/iio/accel/Makefile
@@ -4,6 +4,7 @@
 #
 
 # When adding new entries keep the list in alphabetical order
+obj-$(CONFIG_ADIS16201) += adis16201.o
 obj-$(CONFIG_ADXL345) += adxl345_core.o
 obj-$(CONFIG_ADXL345_I2C) += adxl345_i2c.o
 obj-$(CONFIG_ADXL345_SPI) += adxl345_spi.o
diff --git a/drivers/iio/accel/adis16201.c b/drivers/iio/accel/adis16201.c
new file mode 100644
index 0000000..51e1afb
--- /dev/null
+++ b/drivers/iio/accel/adis16201.c
@@ -0,0 +1,321 @@
+/*
+ * ADIS16201 Dual-Axis Digital Inclinometer and Accelerometer
+ *
+ * Copyright 2010 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/spi/spi.h>
+#include <linux/sysfs.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/imu/adis.h>
+
+#define ADIS16201_STARTUP_DELAY_MS			220
+#define ADIS16201_FLASH_CNT				0x00
+
+/* Data Output Register Information */
+#define ADIS16201_SUPPLY_OUT_REG			0x02
+#define ADIS16201_XACCL_OUT_REG				0x04
+#define ADIS16201_YACCL_OUT_REG				0x06
+#define ADIS16201_AUX_ADC_REG				0x08
+#define ADIS16201_TEMP_OUT_REG				0x0A
+#define ADIS16201_XINCL_OUT_REG				0x0C
+#define ADIS16201_YINCL_OUT_REG				0x0E
+
+/* Calibration Register Definition */
+#define ADIS16201_XACCL_OFFS_REG			0x10
+#define ADIS16201_YACCL_OFFS_REG			0x12
+#define ADIS16201_XACCL_SCALE_REG			0x14
+#define ADIS16201_YACCL_SCALE_REG			0x16
+#define ADIS16201_XINCL_OFFS_REG			0x18
+#define ADIS16201_YINCL_OFFS_REG			0x1A
+#define ADIS16201_XINCL_SCALE_REG			0x1C
+#define ADIS16201_YINCL_SCALE_REG			0x1E
+
+/* Alarm Register Definition */
+#define ADIS16201_ALM_MAG1_REG				0x20
+#define ADIS16201_ALM_MAG2_REG				0x22
+#define ADIS16201_ALM_SMPL1_REG				0x24
+#define ADIS16201_ALM_SMPL2_REG				0x26
+#define ADIS16201_ALM_CTRL_REG				0x28
+
+#define ADIS16201_AUX_DAC_REG				0x30
+#define ADIS16201_GPIO_CTRL_REG				0x32
+#define ADIS16201_SMPL_PRD_REG				0x36
+/* Operation, filter configuration */
+#define ADIS16201_AVG_CNT_REG				0x38
+#define ADIS16201_SLP_CNT_REG				0x3A
+
+/* Miscellaneous Control Register Definition */
+#define ADIS16201_MSC_CTRL_REG				0x34
+#define  ADIS16201_MSC_CTRL_SELF_TEST_EN		BIT(8)
+/* Data-ready enable: 1 = enabled, 0 = disabled */
+#define  ADIS16201_MSC_CTRL_DATA_RDY_EN			BIT(2)
+/* Data-ready polarity: 1 = active high, 0 = active low */
+#define  ADIS16201_MSC_CTRL_ACTIVE_DATA_RDY_HIGH	BIT(1)
+/* Data-ready line selection: 1 = DIO1, 0 = DIO0 */
+#define  ADIS16201_MSC_CTRL_DATA_RDY_DIO1		BIT(0)
+
+/* Diagnostics System Status Register Definition */
+#define ADIS16201_DIAG_STAT_REG				0x3C
+#define  ADIS16201_DIAG_STAT_ALARM2			BIT(9)
+#define  ADIS16201_DIAG_STAT_ALARM1			BIT(8)
+#define  ADIS16201_DIAG_STAT_SPI_FAIL_BIT		3
+#define  ADIS16201_DIAG_STAT_FLASH_UPT_FAIL_BIT		2
+/* Power supply above 3.625 V */
+#define  ADIS16201_DIAG_STAT_POWER_HIGH_BIT		1
+/* Power supply below 3.15 V */
+#define  ADIS16201_DIAG_STAT_POWER_LOW_BIT		0
+
+/* System Command Register Definition */
+#define ADIS16201_GLOB_CMD_REG				0x3E
+#define  ADIS16201_GLOB_CMD_SW_RESET			BIT(7)
+#define  ADIS16201_GLOB_CMD_FACTORY_RESET		BIT(1)
+
+#define ADIS16201_ERROR_ACTIVE				BIT(14)
+
+enum adis16201_scan {
+	ADIS16201_SCAN_ACC_X,
+	ADIS16201_SCAN_ACC_Y,
+	ADIS16201_SCAN_INCLI_X,
+	ADIS16201_SCAN_INCLI_Y,
+	ADIS16201_SCAN_SUPPLY,
+	ADIS16201_SCAN_AUX_ADC,
+	ADIS16201_SCAN_TEMP,
+};
+
+static const u8 adis16201_addresses[] = {
+	[ADIS16201_SCAN_ACC_X] = ADIS16201_XACCL_OFFS_REG,
+	[ADIS16201_SCAN_ACC_Y] = ADIS16201_YACCL_OFFS_REG,
+	[ADIS16201_SCAN_INCLI_X] = ADIS16201_XINCL_OFFS_REG,
+	[ADIS16201_SCAN_INCLI_Y] = ADIS16201_YINCL_OFFS_REG,
+};
+
+static int adis16201_read_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int *val, int *val2,
+			      long mask)
+{
+	struct adis *st = iio_priv(indio_dev);
+	int ret;
+	int bits;
+	u8 addr;
+	s16 val16;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		return adis_single_conversion(indio_dev, chan,
+					      ADIS16201_ERROR_ACTIVE, val);
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_VOLTAGE:
+			if (chan->channel == 0) {
+			/* Voltage base units are mV hence 1.22 mV */
+				*val = 1;
+				*val2 = 220000;
+			} else {
+			/* Voltage base units are mV hence 0.61 mV */
+				*val = 0;
+				*val2 = 610000;
+			}
+			return IIO_VAL_INT_PLUS_MICRO;
+		case IIO_TEMP:
+			*val = -470;
+			*val2 = 0;
+			return IIO_VAL_INT_PLUS_MICRO;
+		case IIO_ACCEL:
+			/*
+			 * IIO base unit for sensitivity of accelerometer
+			 * is milli g.
+			 * 1 LSB represents 0.244 mg.
+			 */
+			*val = 0;
+			*val2 = IIO_G_TO_M_S_2(462400);
+			return IIO_VAL_INT_PLUS_NANO;
+		case IIO_INCLI:
+			*val = 0;
+			*val2 = 100000;
+			return IIO_VAL_INT_PLUS_MICRO;
+		default:
+			return -EINVAL;
+		}
+		break;
+	case IIO_CHAN_INFO_OFFSET:
+		/*
+		 * The raw ADC value is 1278 when the temperature
+		 * is 25 degrees and the scale factor per milli
+		 * degree celcius is -470.
+		 */
+		*val = 25000 / -470 - 1278;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_CALIBBIAS:
+		switch (chan->type) {
+		case IIO_ACCEL:
+			bits = 12;
+			break;
+		case IIO_INCLI:
+			bits = 9;
+			break;
+		default:
+			return -EINVAL;
+		}
+		addr = adis16201_addresses[chan->scan_index];
+		ret = adis_read_reg_16(st, addr, &val16);
+		if (ret)
+			return ret;
+
+		*val = sign_extend32(val16, bits - 1);
+		return IIO_VAL_INT;
+	}
+
+	return -EINVAL;
+}
+
+static int adis16201_write_raw(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       int val,
+			       int val2,
+			       long mask)
+{
+	struct adis *st = iio_priv(indio_dev);
+	int m;
+
+	if (mask != IIO_CHAN_INFO_CALIBBIAS)
+		return -EINVAL;
+
+	switch (chan->type) {
+	case IIO_ACCEL:
+		m = GENMASK(11, 0);
+		break;
+	case IIO_INCLI:
+		m = GENMASK(8, 0);
+		break;
+	default:
+		return -EINVAL;
+		}
+
+	return adis_write_reg_16(st, adis16201_addresses[chan->scan_index],
+				 val & m);
+}
+
+static const struct iio_chan_spec adis16201_channels[] = {
+	ADIS_SUPPLY_CHAN(ADIS16201_SUPPLY_OUT_REG, ADIS16201_SCAN_SUPPLY, 0,
+			 12),
+	ADIS_TEMP_CHAN(ADIS16201_TEMP_OUT_REG, ADIS16201_SCAN_TEMP, 0, 12),
+	ADIS_ACCEL_CHAN(X, ADIS16201_XACCL_OUT_REG, ADIS16201_SCAN_ACC_X,
+			BIT(IIO_CHAN_INFO_CALIBBIAS), 0, 14),
+	ADIS_ACCEL_CHAN(Y, ADIS16201_YACCL_OUT_REG, ADIS16201_SCAN_ACC_Y,
+			BIT(IIO_CHAN_INFO_CALIBBIAS), 0, 14),
+	ADIS_AUX_ADC_CHAN(ADIS16201_AUX_ADC_REG, ADIS16201_SCAN_AUX_ADC, 0, 12),
+	ADIS_INCLI_CHAN(X, ADIS16201_XINCL_OUT_REG, ADIS16201_SCAN_INCLI_X,
+			BIT(IIO_CHAN_INFO_CALIBBIAS), 0, 14),
+	ADIS_INCLI_CHAN(X, ADIS16201_YINCL_OUT_REG, ADIS16201_SCAN_INCLI_Y,
+			BIT(IIO_CHAN_INFO_CALIBBIAS), 0, 14),
+	IIO_CHAN_SOFT_TIMESTAMP(7)
+};
+
+static const struct iio_info adis16201_info = {
+	.read_raw = adis16201_read_raw,
+	.write_raw = adis16201_write_raw,
+	.update_scan_mode = adis_update_scan_mode,
+};
+
+static const char * const adis16201_status_error_msgs[] = {
+	[ADIS16201_DIAG_STAT_SPI_FAIL_BIT] = "SPI failure",
+	[ADIS16201_DIAG_STAT_FLASH_UPT_FAIL_BIT] = "Flash update failed",
+	[ADIS16201_DIAG_STAT_POWER_HIGH_BIT] = "Power supply above 3.625V",
+	[ADIS16201_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 3.15V",
+};
+
+static const struct adis_data adis16201_data = {
+	.read_delay = 20,
+	.msc_ctrl_reg = ADIS16201_MSC_CTRL_REG,
+	.glob_cmd_reg = ADIS16201_GLOB_CMD_REG,
+	.diag_stat_reg = ADIS16201_DIAG_STAT_REG,
+
+	.self_test_mask = ADIS16201_MSC_CTRL_SELF_TEST_EN,
+	.self_test_no_autoclear = true,
+	.startup_delay = ADIS16201_STARTUP_DELAY_MS,
+
+	.status_error_msgs = adis16201_status_error_msgs,
+	.status_error_mask = BIT(ADIS16201_DIAG_STAT_SPI_FAIL_BIT) |
+		BIT(ADIS16201_DIAG_STAT_FLASH_UPT_FAIL_BIT) |
+		BIT(ADIS16201_DIAG_STAT_POWER_HIGH_BIT) |
+		BIT(ADIS16201_DIAG_STAT_POWER_LOW_BIT),
+};
+
+static int adis16201_probe(struct spi_device *spi)
+{
+	struct iio_dev *indio_dev;
+	struct adis *st;
+	int ret;
+
+	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);
+
+	indio_dev->name = spi->dev.driver->name;
+	indio_dev->dev.parent = &spi->dev;
+	indio_dev->info = &adis16201_info;
+
+	indio_dev->channels = adis16201_channels;
+	indio_dev->num_channels = ARRAY_SIZE(adis16201_channels);
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	ret = adis_init(st, indio_dev, spi, &adis16201_data);
+	if (ret)
+		return ret;
+
+	ret = adis_setup_buffer_and_trigger(st, indio_dev, NULL);
+	if (ret)
+		return ret;
+
+	ret = adis_initial_startup(st);
+	if (ret)
+		goto error_cleanup_buffer_trigger;
+
+	ret = iio_device_register(indio_dev);
+	if (ret < 0)
+		goto error_cleanup_buffer_trigger;
+
+	return 0;
+
+error_cleanup_buffer_trigger:
+	adis_cleanup_buffer_and_trigger(st, indio_dev);
+	return ret;
+}
+
+static int adis16201_remove(struct spi_device *spi)
+{
+	struct iio_dev *indio_dev = spi_get_drvdata(spi);
+	struct adis *st = iio_priv(indio_dev);
+
+	iio_device_unregister(indio_dev);
+	adis_cleanup_buffer_and_trigger(st, indio_dev);
+
+	return 0;
+}
+
+static struct spi_driver adis16201_driver = {
+	.driver = {
+		.name = "adis16201",
+	},
+	.probe = adis16201_probe,
+	.remove = adis16201_remove,
+};
+module_spi_driver(adis16201_driver);
+
+MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
+MODULE_DESCRIPTION("Analog Devices ADIS16201 Dual-Axis Digital Inclinometer and Accelerometer");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("spi:adis16201");
diff --git a/drivers/staging/iio/accel/Kconfig b/drivers/staging/iio/accel/Kconfig
index c6b0f5e..2f61e21 100644
--- a/drivers/staging/iio/accel/Kconfig
+++ b/drivers/staging/iio/accel/Kconfig
@@ -3,18 +3,6 @@
 #
 menu "Accelerometers"
 
-config ADIS16201
-	tristate "Analog Devices ADIS16201 Dual-Axis Digital Inclinometer and Accelerometer"
-	depends on SPI
-	select IIO_ADIS_LIB
-	select IIO_ADIS_LIB_BUFFER if IIO_BUFFER
-	help
-	  Say Y here to build support for Analog Devices adis16201 dual-axis
-	  digital inclinometer and accelerometer.
-
-	  To compile this driver as a module, say M here: the module will
-	  be called adis16201.
-
 config ADIS16203
 	tristate "Analog Devices ADIS16203 Programmable 360 Degrees Inclinometer"
 	depends on SPI
diff --git a/drivers/staging/iio/accel/Makefile b/drivers/staging/iio/accel/Makefile
index 5d8ad21..7dd55410 100644
--- a/drivers/staging/iio/accel/Makefile
+++ b/drivers/staging/iio/accel/Makefile
@@ -2,7 +2,6 @@
 # Makefile for industrial I/O accelerometer drivers
 #
 
-obj-$(CONFIG_ADIS16201) += adis16201.o
 obj-$(CONFIG_ADIS16203) += adis16203.o
 obj-$(CONFIG_ADIS16209) += adis16209.o
 obj-$(CONFIG_ADIS16240) += adis16240.o
diff --git a/drivers/staging/iio/accel/adis16201.c b/drivers/staging/iio/accel/adis16201.c
deleted file mode 100644
index 51e1afb..0000000
--- a/drivers/staging/iio/accel/adis16201.c
+++ /dev/null
@@ -1,321 +0,0 @@
-/*
- * ADIS16201 Dual-Axis Digital Inclinometer and Accelerometer
- *
- * Copyright 2010 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/slab.h>
-#include <linux/spi/spi.h>
-#include <linux/sysfs.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/imu/adis.h>
-
-#define ADIS16201_STARTUP_DELAY_MS			220
-#define ADIS16201_FLASH_CNT				0x00
-
-/* Data Output Register Information */
-#define ADIS16201_SUPPLY_OUT_REG			0x02
-#define ADIS16201_XACCL_OUT_REG				0x04
-#define ADIS16201_YACCL_OUT_REG				0x06
-#define ADIS16201_AUX_ADC_REG				0x08
-#define ADIS16201_TEMP_OUT_REG				0x0A
-#define ADIS16201_XINCL_OUT_REG				0x0C
-#define ADIS16201_YINCL_OUT_REG				0x0E
-
-/* Calibration Register Definition */
-#define ADIS16201_XACCL_OFFS_REG			0x10
-#define ADIS16201_YACCL_OFFS_REG			0x12
-#define ADIS16201_XACCL_SCALE_REG			0x14
-#define ADIS16201_YACCL_SCALE_REG			0x16
-#define ADIS16201_XINCL_OFFS_REG			0x18
-#define ADIS16201_YINCL_OFFS_REG			0x1A
-#define ADIS16201_XINCL_SCALE_REG			0x1C
-#define ADIS16201_YINCL_SCALE_REG			0x1E
-
-/* Alarm Register Definition */
-#define ADIS16201_ALM_MAG1_REG				0x20
-#define ADIS16201_ALM_MAG2_REG				0x22
-#define ADIS16201_ALM_SMPL1_REG				0x24
-#define ADIS16201_ALM_SMPL2_REG				0x26
-#define ADIS16201_ALM_CTRL_REG				0x28
-
-#define ADIS16201_AUX_DAC_REG				0x30
-#define ADIS16201_GPIO_CTRL_REG				0x32
-#define ADIS16201_SMPL_PRD_REG				0x36
-/* Operation, filter configuration */
-#define ADIS16201_AVG_CNT_REG				0x38
-#define ADIS16201_SLP_CNT_REG				0x3A
-
-/* Miscellaneous Control Register Definition */
-#define ADIS16201_MSC_CTRL_REG				0x34
-#define  ADIS16201_MSC_CTRL_SELF_TEST_EN		BIT(8)
-/* Data-ready enable: 1 = enabled, 0 = disabled */
-#define  ADIS16201_MSC_CTRL_DATA_RDY_EN			BIT(2)
-/* Data-ready polarity: 1 = active high, 0 = active low */
-#define  ADIS16201_MSC_CTRL_ACTIVE_DATA_RDY_HIGH	BIT(1)
-/* Data-ready line selection: 1 = DIO1, 0 = DIO0 */
-#define  ADIS16201_MSC_CTRL_DATA_RDY_DIO1		BIT(0)
-
-/* Diagnostics System Status Register Definition */
-#define ADIS16201_DIAG_STAT_REG				0x3C
-#define  ADIS16201_DIAG_STAT_ALARM2			BIT(9)
-#define  ADIS16201_DIAG_STAT_ALARM1			BIT(8)
-#define  ADIS16201_DIAG_STAT_SPI_FAIL_BIT		3
-#define  ADIS16201_DIAG_STAT_FLASH_UPT_FAIL_BIT		2
-/* Power supply above 3.625 V */
-#define  ADIS16201_DIAG_STAT_POWER_HIGH_BIT		1
-/* Power supply below 3.15 V */
-#define  ADIS16201_DIAG_STAT_POWER_LOW_BIT		0
-
-/* System Command Register Definition */
-#define ADIS16201_GLOB_CMD_REG				0x3E
-#define  ADIS16201_GLOB_CMD_SW_RESET			BIT(7)
-#define  ADIS16201_GLOB_CMD_FACTORY_RESET		BIT(1)
-
-#define ADIS16201_ERROR_ACTIVE				BIT(14)
-
-enum adis16201_scan {
-	ADIS16201_SCAN_ACC_X,
-	ADIS16201_SCAN_ACC_Y,
-	ADIS16201_SCAN_INCLI_X,
-	ADIS16201_SCAN_INCLI_Y,
-	ADIS16201_SCAN_SUPPLY,
-	ADIS16201_SCAN_AUX_ADC,
-	ADIS16201_SCAN_TEMP,
-};
-
-static const u8 adis16201_addresses[] = {
-	[ADIS16201_SCAN_ACC_X] = ADIS16201_XACCL_OFFS_REG,
-	[ADIS16201_SCAN_ACC_Y] = ADIS16201_YACCL_OFFS_REG,
-	[ADIS16201_SCAN_INCLI_X] = ADIS16201_XINCL_OFFS_REG,
-	[ADIS16201_SCAN_INCLI_Y] = ADIS16201_YINCL_OFFS_REG,
-};
-
-static int adis16201_read_raw(struct iio_dev *indio_dev,
-			      struct iio_chan_spec const *chan,
-			      int *val, int *val2,
-			      long mask)
-{
-	struct adis *st = iio_priv(indio_dev);
-	int ret;
-	int bits;
-	u8 addr;
-	s16 val16;
-
-	switch (mask) {
-	case IIO_CHAN_INFO_RAW:
-		return adis_single_conversion(indio_dev, chan,
-					      ADIS16201_ERROR_ACTIVE, val);
-	case IIO_CHAN_INFO_SCALE:
-		switch (chan->type) {
-		case IIO_VOLTAGE:
-			if (chan->channel == 0) {
-			/* Voltage base units are mV hence 1.22 mV */
-				*val = 1;
-				*val2 = 220000;
-			} else {
-			/* Voltage base units are mV hence 0.61 mV */
-				*val = 0;
-				*val2 = 610000;
-			}
-			return IIO_VAL_INT_PLUS_MICRO;
-		case IIO_TEMP:
-			*val = -470;
-			*val2 = 0;
-			return IIO_VAL_INT_PLUS_MICRO;
-		case IIO_ACCEL:
-			/*
-			 * IIO base unit for sensitivity of accelerometer
-			 * is milli g.
-			 * 1 LSB represents 0.244 mg.
-			 */
-			*val = 0;
-			*val2 = IIO_G_TO_M_S_2(462400);
-			return IIO_VAL_INT_PLUS_NANO;
-		case IIO_INCLI:
-			*val = 0;
-			*val2 = 100000;
-			return IIO_VAL_INT_PLUS_MICRO;
-		default:
-			return -EINVAL;
-		}
-		break;
-	case IIO_CHAN_INFO_OFFSET:
-		/*
-		 * The raw ADC value is 1278 when the temperature
-		 * is 25 degrees and the scale factor per milli
-		 * degree celcius is -470.
-		 */
-		*val = 25000 / -470 - 1278;
-		return IIO_VAL_INT;
-	case IIO_CHAN_INFO_CALIBBIAS:
-		switch (chan->type) {
-		case IIO_ACCEL:
-			bits = 12;
-			break;
-		case IIO_INCLI:
-			bits = 9;
-			break;
-		default:
-			return -EINVAL;
-		}
-		addr = adis16201_addresses[chan->scan_index];
-		ret = adis_read_reg_16(st, addr, &val16);
-		if (ret)
-			return ret;
-
-		*val = sign_extend32(val16, bits - 1);
-		return IIO_VAL_INT;
-	}
-
-	return -EINVAL;
-}
-
-static int adis16201_write_raw(struct iio_dev *indio_dev,
-			       struct iio_chan_spec const *chan,
-			       int val,
-			       int val2,
-			       long mask)
-{
-	struct adis *st = iio_priv(indio_dev);
-	int m;
-
-	if (mask != IIO_CHAN_INFO_CALIBBIAS)
-		return -EINVAL;
-
-	switch (chan->type) {
-	case IIO_ACCEL:
-		m = GENMASK(11, 0);
-		break;
-	case IIO_INCLI:
-		m = GENMASK(8, 0);
-		break;
-	default:
-		return -EINVAL;
-		}
-
-	return adis_write_reg_16(st, adis16201_addresses[chan->scan_index],
-				 val & m);
-}
-
-static const struct iio_chan_spec adis16201_channels[] = {
-	ADIS_SUPPLY_CHAN(ADIS16201_SUPPLY_OUT_REG, ADIS16201_SCAN_SUPPLY, 0,
-			 12),
-	ADIS_TEMP_CHAN(ADIS16201_TEMP_OUT_REG, ADIS16201_SCAN_TEMP, 0, 12),
-	ADIS_ACCEL_CHAN(X, ADIS16201_XACCL_OUT_REG, ADIS16201_SCAN_ACC_X,
-			BIT(IIO_CHAN_INFO_CALIBBIAS), 0, 14),
-	ADIS_ACCEL_CHAN(Y, ADIS16201_YACCL_OUT_REG, ADIS16201_SCAN_ACC_Y,
-			BIT(IIO_CHAN_INFO_CALIBBIAS), 0, 14),
-	ADIS_AUX_ADC_CHAN(ADIS16201_AUX_ADC_REG, ADIS16201_SCAN_AUX_ADC, 0, 12),
-	ADIS_INCLI_CHAN(X, ADIS16201_XINCL_OUT_REG, ADIS16201_SCAN_INCLI_X,
-			BIT(IIO_CHAN_INFO_CALIBBIAS), 0, 14),
-	ADIS_INCLI_CHAN(X, ADIS16201_YINCL_OUT_REG, ADIS16201_SCAN_INCLI_Y,
-			BIT(IIO_CHAN_INFO_CALIBBIAS), 0, 14),
-	IIO_CHAN_SOFT_TIMESTAMP(7)
-};
-
-static const struct iio_info adis16201_info = {
-	.read_raw = adis16201_read_raw,
-	.write_raw = adis16201_write_raw,
-	.update_scan_mode = adis_update_scan_mode,
-};
-
-static const char * const adis16201_status_error_msgs[] = {
-	[ADIS16201_DIAG_STAT_SPI_FAIL_BIT] = "SPI failure",
-	[ADIS16201_DIAG_STAT_FLASH_UPT_FAIL_BIT] = "Flash update failed",
-	[ADIS16201_DIAG_STAT_POWER_HIGH_BIT] = "Power supply above 3.625V",
-	[ADIS16201_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 3.15V",
-};
-
-static const struct adis_data adis16201_data = {
-	.read_delay = 20,
-	.msc_ctrl_reg = ADIS16201_MSC_CTRL_REG,
-	.glob_cmd_reg = ADIS16201_GLOB_CMD_REG,
-	.diag_stat_reg = ADIS16201_DIAG_STAT_REG,
-
-	.self_test_mask = ADIS16201_MSC_CTRL_SELF_TEST_EN,
-	.self_test_no_autoclear = true,
-	.startup_delay = ADIS16201_STARTUP_DELAY_MS,
-
-	.status_error_msgs = adis16201_status_error_msgs,
-	.status_error_mask = BIT(ADIS16201_DIAG_STAT_SPI_FAIL_BIT) |
-		BIT(ADIS16201_DIAG_STAT_FLASH_UPT_FAIL_BIT) |
-		BIT(ADIS16201_DIAG_STAT_POWER_HIGH_BIT) |
-		BIT(ADIS16201_DIAG_STAT_POWER_LOW_BIT),
-};
-
-static int adis16201_probe(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev;
-	struct adis *st;
-	int ret;
-
-	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);
-
-	indio_dev->name = spi->dev.driver->name;
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->info = &adis16201_info;
-
-	indio_dev->channels = adis16201_channels;
-	indio_dev->num_channels = ARRAY_SIZE(adis16201_channels);
-	indio_dev->modes = INDIO_DIRECT_MODE;
-
-	ret = adis_init(st, indio_dev, spi, &adis16201_data);
-	if (ret)
-		return ret;
-
-	ret = adis_setup_buffer_and_trigger(st, indio_dev, NULL);
-	if (ret)
-		return ret;
-
-	ret = adis_initial_startup(st);
-	if (ret)
-		goto error_cleanup_buffer_trigger;
-
-	ret = iio_device_register(indio_dev);
-	if (ret < 0)
-		goto error_cleanup_buffer_trigger;
-
-	return 0;
-
-error_cleanup_buffer_trigger:
-	adis_cleanup_buffer_and_trigger(st, indio_dev);
-	return ret;
-}
-
-static int adis16201_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct adis *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	adis_cleanup_buffer_and_trigger(st, indio_dev);
-
-	return 0;
-}
-
-static struct spi_driver adis16201_driver = {
-	.driver = {
-		.name = "adis16201",
-	},
-	.probe = adis16201_probe,
-	.remove = adis16201_remove,
-};
-module_spi_driver(adis16201_driver);
-
-MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
-MODULE_DESCRIPTION("Analog Devices ADIS16201 Dual-Axis Digital Inclinometer and Accelerometer");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("spi:adis16201");
-- 
2.7.4