Merge tag 'iio-for-4.12a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First set of IIO new device support, features and cleanup for the 4.12 cycle.

Quite a bit of outreachy activity here with a driver from a current intern
and a number of cleanup patches as part of the next round.

Getting a pull request in early this cycle as it's looking like another large
cycle for IIO.

New device support
* adxl345
  - initial device support. Note, once complete support is done the intent
    is to superceded the driver in input/misc.
  - bindings.
  - conversion from i2c direct calls to regmap and driver split.
  - spi support.
* chromeos light and proximity.
  - new driver.
* devantech srf04 ultrasonic ranger
  - new driver with device tree bindings.
* hid temperature
  - new driver for environemntal temperature support from hid devices.
* max30102 oximeter
  - new driver with device tree bindings.
* st lsm6dsx
  - refactor and addition of device support for lsm6dsl and lsm6ds3h.

Staging graduation
* isl29028 including copyright notice update to reflect Brian's work.
* lpc32xx_adc.
* spear adc. It's not perfect and there are some datasheet disagreements, but
  it works and is good enough to graduate.

New features
* documentation
  - abi docs for in_proximity_sampling_frequency_available.
  - generalise counting direction ABI docs as a second driver is going to
  use them.
* hid-sensor-prox
  - Add support for HID_USAGE_SENSOR_HUMAN_PRESENCE if used on a particular
  device.
* isl29028
  - runtime pm.
* meson-saradc
  - switch from polling to interrupt mode and improved read_raw_sample function
  to avoid unnecessary loop.
* tmp007
  - interrupt and threshold event support.

Cleanups and minor fixes
* ad2s1210
  - permissions to octal.
* ad7192
  - permissions to octal.
  - use BIT macro.
* ad9832
  - merge header definitions into source file.
* ad9834
  - merge header definitions into source file.
* ade7753
  - merge header definitions into source file.
  - cleanup include ordering.
* ade7854
  - simplify return logic.
* adis16201
  - merge header definitions into source file.
  - rename _core.c to .c as there is nothing else.
* adis16203
  - merge header definitions into source file.
  - rename _core.c to .c as there is nothing else.
* adis16209
  - merge header definitions into source file.
  - rename _core.c to .c as there is nothing else.
* adis16240
  - permissions to octal.
  - merge header definitions into source file.
  - rename _core.c to .c as there is nothing else.
* adt7136
  - permissions to octal.
* cio-dac
  - set missing parent device.
* documentation
  - update version numbers on sysfs ABI for counter bits that didn't quite.
  make 4.9.
* isl29028
  - mdelay to msleep.
  - incorrrect sleep time when taking first proximity reading.
* lmp91000
  - set missing parent device.
* lpc32xx
  - Consistent prefixes for defines.
  - rename local state structure to _state.
* max30100
  - set missing parent device.
* max30102
  - set missing parent device.
* maxim-thermocouple
  - set missing parent device.
* meter driver header
  - permissions to octal.
* pulsedlight-lidar-lite-v2
  - set missing parent device.
* quad-8
  - set missing parent device.
* st104
  - set missing parent device.

Other
* Mailmap
  - update Matt Ranostay's email address to the Konsolko one.

1 files changed, 386 insertions, 0 deletions

diff --git a/drivers/staging/iio/accel/adis16209.c b/drivers/staging/iio/accel/adis16209.c
new file mode 100644
index 000000000000..8ff537f89d45
--- /dev/null
+++ b/drivers/staging/iio/accel/adis16209.c
@@ -0,0 +1,386 @@
+/*
+ * ADIS16209 Dual-Axis Digital Inclinometer and Accelerometer
+ *
+ * Copyright 2010 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/delay.h>
+#include <linux/mutex.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/spi/spi.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/list.h>
+#include <linux/module.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/imu/adis.h>
+
+#define ADIS16209_STARTUP_DELAY	220 /* ms */
+
+/* Flash memory write count */
+#define ADIS16209_FLASH_CNT      0x00
+
+/* Output, power supply */
+#define ADIS16209_SUPPLY_OUT     0x02
+
+/* Output, x-axis accelerometer */
+#define ADIS16209_XACCL_OUT      0x04
+
+/* Output, y-axis accelerometer */
+#define ADIS16209_YACCL_OUT      0x06
+
+/* Output, auxiliary ADC input */
+#define ADIS16209_AUX_ADC        0x08
+
+/* Output, temperature */
+#define ADIS16209_TEMP_OUT       0x0A
+
+/* Output, x-axis inclination */
+#define ADIS16209_XINCL_OUT      0x0C
+
+/* Output, y-axis inclination */
+#define ADIS16209_YINCL_OUT      0x0E
+
+/* Output, +/-180 vertical rotational position */
+#define ADIS16209_ROT_OUT        0x10
+
+/* Calibration, x-axis acceleration offset null */
+#define ADIS16209_XACCL_NULL     0x12
+
+/* Calibration, y-axis acceleration offset null */
+#define ADIS16209_YACCL_NULL     0x14
+
+/* Calibration, x-axis inclination offset null */
+#define ADIS16209_XINCL_NULL     0x16
+
+/* Calibration, y-axis inclination offset null */
+#define ADIS16209_YINCL_NULL     0x18
+
+/* Calibration, vertical rotation offset null */
+#define ADIS16209_ROT_NULL       0x1A
+
+/* Alarm 1 amplitude threshold */
+#define ADIS16209_ALM_MAG1       0x20
+
+/* Alarm 2 amplitude threshold */
+#define ADIS16209_ALM_MAG2       0x22
+
+/* Alarm 1, sample period */
+#define ADIS16209_ALM_SMPL1      0x24
+
+/* Alarm 2, sample period */
+#define ADIS16209_ALM_SMPL2      0x26
+
+/* Alarm control */
+#define ADIS16209_ALM_CTRL       0x28
+
+/* Auxiliary DAC data */
+#define ADIS16209_AUX_DAC        0x30
+
+/* General-purpose digital input/output control */
+#define ADIS16209_GPIO_CTRL      0x32
+
+/* Miscellaneous control */
+#define ADIS16209_MSC_CTRL       0x34
+
+/* Internal sample period (rate) control */
+#define ADIS16209_SMPL_PRD       0x36
+
+/* Operation, filter configuration */
+#define ADIS16209_AVG_CNT        0x38
+
+/* Operation, sleep mode control */
+#define ADIS16209_SLP_CNT        0x3A
+
+/* Diagnostics, system status register */
+#define ADIS16209_DIAG_STAT      0x3C
+
+/* Operation, system command register */
+#define ADIS16209_GLOB_CMD       0x3E
+
+/* MSC_CTRL */
+
+/* Self-test at power-on: 1 = disabled, 0 = enabled */
+#define ADIS16209_MSC_CTRL_PWRUP_SELF_TEST	BIT(10)
+
+/* Self-test enable */
+#define ADIS16209_MSC_CTRL_SELF_TEST_EN	        BIT(8)
+
+/* Data-ready enable: 1 = enabled, 0 = disabled */
+#define ADIS16209_MSC_CTRL_DATA_RDY_EN	        BIT(2)
+
+/* Data-ready polarity: 1 = active high, 0 = active low */
+#define ADIS16209_MSC_CTRL_ACTIVE_HIGH	        BIT(1)
+
+/* Data-ready line selection: 1 = DIO2, 0 = DIO1 */
+#define ADIS16209_MSC_CTRL_DATA_RDY_DIO2	BIT(0)
+
+/* DIAG_STAT */
+
+/* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */
+#define ADIS16209_DIAG_STAT_ALARM2        BIT(9)
+
+/* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */
+#define ADIS16209_DIAG_STAT_ALARM1        BIT(8)
+
+/* Self-test diagnostic error flag: 1 = error condition, 0 = normal operation */
+#define ADIS16209_DIAG_STAT_SELFTEST_FAIL_BIT	5
+
+/* SPI communications failure */
+#define ADIS16209_DIAG_STAT_SPI_FAIL_BIT	3
+
+/* Flash update failure */
+#define ADIS16209_DIAG_STAT_FLASH_UPT_BIT	2
+
+/* Power supply above 3.625 V */
+#define ADIS16209_DIAG_STAT_POWER_HIGH_BIT	1
+
+/* Power supply below 3.15 V */
+#define ADIS16209_DIAG_STAT_POWER_LOW_BIT	0
+
+/* GLOB_CMD */
+
+#define ADIS16209_GLOB_CMD_SW_RESET	BIT(7)
+#define ADIS16209_GLOB_CMD_CLEAR_STAT	BIT(4)
+#define ADIS16209_GLOB_CMD_FACTORY_CAL	BIT(1)
+
+#define ADIS16209_ERROR_ACTIVE          BIT(14)
+
+#define ADIS16209_SCAN_SUPPLY	0
+#define ADIS16209_SCAN_ACC_X	1
+#define ADIS16209_SCAN_ACC_Y	2
+#define ADIS16209_SCAN_AUX_ADC	3
+#define ADIS16209_SCAN_TEMP	4
+#define ADIS16209_SCAN_INCLI_X	5
+#define ADIS16209_SCAN_INCLI_Y	6
+#define ADIS16209_SCAN_ROT	7
+
+static const u8 adis16209_addresses[8][1] = {
+	[ADIS16209_SCAN_SUPPLY] = { },
+	[ADIS16209_SCAN_AUX_ADC] = { },
+	[ADIS16209_SCAN_ACC_X] = { ADIS16209_XACCL_NULL },
+	[ADIS16209_SCAN_ACC_Y] = { ADIS16209_YACCL_NULL },
+	[ADIS16209_SCAN_INCLI_X] = { ADIS16209_XINCL_NULL },
+	[ADIS16209_SCAN_INCLI_Y] = { ADIS16209_YINCL_NULL },
+	[ADIS16209_SCAN_ROT] = { },
+	[ADIS16209_SCAN_TEMP] = { },
+};
+
+static int adis16209_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 bits;
+	s16 val16;
+	u8 addr;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_CALIBBIAS:
+		switch (chan->type) {
+		case IIO_ACCEL:
+		case IIO_INCLI:
+			bits = 14;
+			break;
+		default:
+			return -EINVAL;
+		}
+		val16 = val & ((1 << bits) - 1);
+		addr = adis16209_addresses[chan->scan_index][0];
+		return adis_write_reg_16(st, addr, val16);
+	}
+	return -EINVAL;
+}
+
+static int adis16209_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,
+			ADIS16209_ERROR_ACTIVE, val);
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_VOLTAGE:
+			*val = 0;
+			if (chan->channel == 0)
+				*val2 = 305180; /* 0.30518 mV */
+			else
+				*val2 = 610500; /* 0.6105 mV */
+			return IIO_VAL_INT_PLUS_MICRO;
+		case IIO_TEMP:
+			*val = -470; /* -0.47 C */
+			*val2 = 0;
+			return IIO_VAL_INT_PLUS_MICRO;
+		case IIO_ACCEL:
+			*val = 0;
+			*val2 = IIO_G_TO_M_S_2(244140); /* 0.244140 mg */
+			return IIO_VAL_INT_PLUS_NANO;
+		case IIO_INCLI:
+		case IIO_ROT:
+			*val = 0;
+			*val2 = 25000; /* 0.025 degree */
+			return IIO_VAL_INT_PLUS_MICRO;
+		default:
+			return -EINVAL;
+		}
+		break;
+	case IIO_CHAN_INFO_OFFSET:
+		*val = 25000 / -470 - 0x4FE; /* 25 C = 0x4FE */
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_CALIBBIAS:
+		switch (chan->type) {
+		case IIO_ACCEL:
+			bits = 14;
+			break;
+		default:
+			return -EINVAL;
+		}
+		mutex_lock(&indio_dev->mlock);
+		addr = adis16209_addresses[chan->scan_index][0];
+		ret = adis_read_reg_16(st, addr, &val16);
+		if (ret) {
+			mutex_unlock(&indio_dev->mlock);
+			return ret;
+		}
+		val16 &= (1 << bits) - 1;
+		val16 = (s16)(val16 << (16 - bits)) >> (16 - bits);
+		*val = val16;
+		mutex_unlock(&indio_dev->mlock);
+		return IIO_VAL_INT;
+	}
+	return -EINVAL;
+}
+
+static const struct iio_chan_spec adis16209_channels[] = {
+	ADIS_SUPPLY_CHAN(ADIS16209_SUPPLY_OUT, ADIS16209_SCAN_SUPPLY, 0, 14),
+	ADIS_TEMP_CHAN(ADIS16209_TEMP_OUT, ADIS16209_SCAN_TEMP, 0, 12),
+	ADIS_ACCEL_CHAN(X, ADIS16209_XACCL_OUT, ADIS16209_SCAN_ACC_X,
+			BIT(IIO_CHAN_INFO_CALIBBIAS), 0, 14),
+	ADIS_ACCEL_CHAN(Y, ADIS16209_YACCL_OUT, ADIS16209_SCAN_ACC_Y,
+			BIT(IIO_CHAN_INFO_CALIBBIAS), 0, 14),
+	ADIS_AUX_ADC_CHAN(ADIS16209_AUX_ADC, ADIS16209_SCAN_AUX_ADC, 0, 12),
+	ADIS_INCLI_CHAN(X, ADIS16209_XINCL_OUT, ADIS16209_SCAN_INCLI_X,
+			0, 0, 14),
+	ADIS_INCLI_CHAN(Y, ADIS16209_YINCL_OUT, ADIS16209_SCAN_INCLI_Y,
+			0, 0, 14),
+	ADIS_ROT_CHAN(X, ADIS16209_ROT_OUT, ADIS16209_SCAN_ROT, 0, 0, 14),
+	IIO_CHAN_SOFT_TIMESTAMP(8)
+};
+
+static const struct iio_info adis16209_info = {
+	.read_raw = &adis16209_read_raw,
+	.write_raw = &adis16209_write_raw,
+	.update_scan_mode = adis_update_scan_mode,
+	.driver_module = THIS_MODULE,
+};
+
+static const char * const adis16209_status_error_msgs[] = {
+	[ADIS16209_DIAG_STAT_SELFTEST_FAIL_BIT] = "Self test failure",
+	[ADIS16209_DIAG_STAT_SPI_FAIL_BIT] = "SPI failure",
+	[ADIS16209_DIAG_STAT_FLASH_UPT_BIT] = "Flash update failed",
+	[ADIS16209_DIAG_STAT_POWER_HIGH_BIT] = "Power supply above 3.625V",
+	[ADIS16209_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 3.15V",
+};
+
+static const struct adis_data adis16209_data = {
+	.read_delay = 30,
+	.msc_ctrl_reg = ADIS16209_MSC_CTRL,
+	.glob_cmd_reg = ADIS16209_GLOB_CMD,
+	.diag_stat_reg = ADIS16209_DIAG_STAT,
+
+	.self_test_mask = ADIS16209_MSC_CTRL_SELF_TEST_EN,
+	.self_test_no_autoclear = true,
+	.startup_delay = ADIS16209_STARTUP_DELAY,
+
+	.status_error_msgs = adis16209_status_error_msgs,
+	.status_error_mask = BIT(ADIS16209_DIAG_STAT_SELFTEST_FAIL_BIT) |
+		BIT(ADIS16209_DIAG_STAT_SPI_FAIL_BIT) |
+		BIT(ADIS16209_DIAG_STAT_FLASH_UPT_BIT) |
+		BIT(ADIS16209_DIAG_STAT_POWER_HIGH_BIT) |
+		BIT(ADIS16209_DIAG_STAT_POWER_LOW_BIT),
+};
+
+static int adis16209_probe(struct spi_device *spi)
+{
+	int ret;
+	struct adis *st;
+	struct iio_dev *indio_dev;
+
+	/* setup the industrialio driver allocated elements */
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+	st = iio_priv(indio_dev);
+	/* this is only used for removal purposes */
+	spi_set_drvdata(spi, indio_dev);
+
+	indio_dev->name = spi->dev.driver->name;
+	indio_dev->dev.parent = &spi->dev;
+	indio_dev->info = &adis16209_info;
+	indio_dev->channels = adis16209_channels;
+	indio_dev->num_channels = ARRAY_SIZE(adis16209_channels);
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	ret = adis_init(st, indio_dev, spi, &adis16209_data);
+	if (ret)
+		return ret;
+	ret = adis_setup_buffer_and_trigger(st, indio_dev, NULL);
+	if (ret)
+		return ret;
+
+	/* Get the device into a sane initial state */
+	ret = adis_initial_startup(st);
+	if (ret)
+		goto error_cleanup_buffer_trigger;
+	ret = iio_device_register(indio_dev);
+	if (ret)
+		goto error_cleanup_buffer_trigger;
+
+	return 0;
+
+error_cleanup_buffer_trigger:
+	adis_cleanup_buffer_and_trigger(st, indio_dev);
+	return ret;
+}
+
+static int adis16209_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 adis16209_driver = {
+	.driver = {
+		.name = "adis16209",
+	},
+	.probe = adis16209_probe,
+	.remove = adis16209_remove,
+};
+module_spi_driver(adis16209_driver);
+
+MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
+MODULE_DESCRIPTION("Analog Devices ADIS16209 Dual-Axis Digital Inclinometer and Accelerometer");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("spi:adis16209");