Merge tag 'iio-for-7.3a' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next

Jonathan writes:

IIO new device support, features, cleanup for 7.3

Includes a merge of 7.2-rc2 to pick up the changes around
mod_devicetable.h and reduce resulting conflicts around includes.

New device support
------------------

adi,ad3530R
- Add support for the AD3532R and AD3532 16 channel DACs.
adi,ad4080
- Add support for the AD4883 ADC.
adi,ad5686
- Add support for AD5313R, AD5317R, AD5674, AD5687R, AD5689, AD5689R DACs
  over SPI
- Add support for AD5316R, AD5674, AD5697R and AD5696 DACs over I2C
- Significant driver refactoring prior to these additions, partly to reduce
  bus traffic and to add triggered buffer and gain control support. An
  earlier set added support for missing supplies, reset and LDAC GPIO.
adi,adf41513
- New driver to support this PLL frequency synthesizer that runs up to
  26.5 GHz.
- Included infrastructure to handle higher precision attributes with
  extensive tests
adi,ltc2378-20
- New driver supporting LTC2338, LTC2364, LTC2367, LTC2368, LT2369, LTC2370
  LTC2376, LTC2377, LTC2378, LTC2379 and LTC23980 ADCs with both high speed
  capture via appropriate backend and conventional triggered buffer SPI
  capture.
invensense,icm42607
- New driver for this IMU.
mediateck,mt6323
- New driver for this PMIC ADC.
microchip,mcp47a1
- New driver for this I2C 6 bit DAC.
nxp,mcf54415-dac
- New driver for this DAC found in NXP SoCs.
qst,qmc5884l
- New driver for this 3 axis magnetometer. Included dt vendor entry for qst.
qst,qmc6308
- New driver for this 3 axis magnetometer.
sensiron,slf3s
- New driver for this liquid flow sensor. Includes adding IIO_VOLUMEFLOW
  channel type.
st,vl53l1x
- Refactors to improve readability.
ti,ads112c14
- New driver supporting the ADS112C14 and ADS122C14 ADCs. These bring
  some new ABI for input chopping, particular useful for resistive sensors
  like thermocouples or Wheatstone bridges.
- Support CRC8 detection of corruption on the bus.
- Support buffered reads.
ti,tmp117
- (trivial) Add support for the tmp119 temperature sensor.
xilinx,versal-sysmon
- New ADC driver for this block found on various FPGAs including various
  bus interfaces, threshold and oversampling support.

dt binding updates
------------------
new shared bindings
- excitation-channels and excitation-current-nanoamp allow per channel
  specification of currents used for resistive sensor measurement.
- reference-sources property to allow selection of a per channel reference.
rockchip,saradc
- Add RV1106 which is compatible with the RV3588.

Features
--------

buffer-dmaengine
- Allow cyclic buffers, useful for repeating sequence generation with DACs.
devantech,dmard09
- Implement read back of channel scale - previously interface always
  returned an error.
hid,sensors-als
- Enable separate channel scaling for hardware that supports it.
invensense,timestamp library
- Various precision improvements.
invensense,icm42600
- Add support for hwfifo watermark interfaces.
taos,tcs3472
- Support wait time and sampling frequency control.

Cleanups, minor fixes
---------------------

Minor cleanups not mentioned at all in this summary such
as white space fixes or typos.

Affecting various drivers
- Cleanup of conditionals that had no affect.
- Drop some runtime pm local wrappers as now runtime_pm does the
  mark_last_busy part inside the put, these provide no useful code
  deduplication or readability advantages over directly calling the
  runtime_pm functions.
- Return 0 from write_raw() on success.
- Use of dev_err_probe() to simplify code and sometimes provide useful
  info for deferred probe debugging.
- Drop some redundant error prints where the called function already
  provides information on errors.
- Make some read only arrays in functions static.
- Fix up missing handling of regcache_sync() errors.
- Drop some false kernel-doc markings.
- Add missing MODULE_DEVICE_TABLE for some of_match_id tables.
- Use local variables for things like the struct device to shorten and
  improve readability of code.
- Drop some unused structure elements.
- Reorder dds.h macro parameters to be inline with others.
- Header reorders and IWYU. Often part of a more significant series.
- Remove abstractions designed to allow a driver to support multiple device
  types, when they have been around a long time and only the original part
  showed up.
- Initialize spi_device_id arrays using member names following dropping of
  driver data from drivers that didn't actually use it.
- Catch up with i2c_device_id tables added since previous effort to use
  named initializers for all those.
- Use kernel types in a few places instead of standard C ones or bare
  unsigned.

Misc
- Update Xilinx AMS maintainer.
- Update email address for Maxwell Doose.
- Update email address for Siratul Islam.
- Update email address for Tomasz Duszynski and re-add Tomasz to
  various maintainer entries.
Docs
- Encourage use of differential channel naming even when there is no
  flexibility in input to differential pair mapping. Intended to
  provide a strong signal to userspace that a channel is differential.
adi,ad_sigma_delta
- Allow COMPILE_TEST without any users.
adi,ad2s1201
- Refactor trigger handler to avoid mix of guard() and goto.
adi,ad5686
- Avoid potential NULL dereference is user forces a driver bind.
adi,ad5696
- Add a couple of missing entries to the of_match_id table and update
  binding to match.
atmel,ad91_adc
- Use const char * for DT string property allowing a cast to be dropped.
avia,hx711
- Various refactors and cleanup to enable support of additional parts
  (to come)
- Add missing supply and gpio dt-bindings.
bosch,bmc150
- Harden against device reporting too large a FIFO sample count.
- Use FIELD_PREP() / FIELD_GET() to improve readability.
freescale,fxls8962af
- Harden against device reporting too large a FIFO sample count.
hid-sensors-*
- Reorder probe to not expose userspace interfaces until the rest of
  the setup is done to avoid potentially dropping data.
honeywell,abp2030pa
- Drop an unreachable return.
invensens,icm45600
- Harden against bad value of FIFO sample count from device.
- Use i2c_match_data if firmware table sourced match data isn't available.
nxp,mpl1115
- Ensure runtime_pm is balanced on error in probe.
rohm,bm1390
- Make the driver slightly more likely to recover from transient errors.
sensiron,sgp30
- Handle thread creation errors.
st,lsm6dsx
- Update the enable mask when doing sensor fusion to avoid incorrect fifo
  data handling.
st,stm32-dfsdm
- Treat dt flags as booleans.
ti,ads1015
- Switch to devm helpers which simplified code and closed a resource leak.
ti,opt3001
- Split complicated opt3001_get_processed() logic into irq an no irq
  helper functions.
- Use devm to simplify code.
- Use guard() to simplify code.
- Reorder probe so final call exposes userspace interfaces.
- Various other more minor cleanup
taos,tsl2772
- Fix calibscale readback to check right channel type.
taos,tsl2583
- Use sysfs_emit() and sysfs_emit_at() to replace open coded equivalents.

* tag 'iio-for-7.3a' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (232 commits)
  iio: dac: mcp47a1: add support for new device
  dt-bindings: iio: dac: add support for mcp47a1
  iio: Update email for Maxwell Doose
  iio: imu: st_lsm6dsx: Update enable mask when using sensor fusion
  iio: light: cm32181: return zero after writing calibscale
  iio: flow: add Sensirion SLF3S liquid flow sensor driver
  iio: core: add IIO_VAL_DECIMAL64_FEMTO format type
  dt-bindings: iio: flow: add Sensirion SLF3S liquid flow sensor
  iio: types: add IIO_VOLUMEFLOW channel type
  iio: ABI: Encourage differential voltage ABI usage
  iio: adc: ltc2378: Add support for LTC2338-18
  iio: adc: ltc2378: Enable triggered buffer data capture
  iio: adc: ltc2378: Enable high-speed data capture
  iio: adc: ltc2378: Add support for LTC2378-20 and similar ADCs
  dt-bindings: iio: adc: Add ltc2378
  iio: magnetometer: ak8974: remove conditional return with no effect
  iio: light: tsl2583: remove conditional return with no effect
  iio: adc: rcar-gyroadc: remove rcar_gyroadc_set_power() helper
  iio: light: vcnl4000: remove vcnl4000_set_pm_runtime_state() helper
  iio: light: vcnl4035: remove vcnl4035_set_pm_runtime_state() helper
  ...

6 files changed, 90 insertions, 17 deletions

diff --git a/include/dt-bindings/iio/adc/mediatek,mt6323-auxadc.h b/include/dt-bindings/iio/adc/mediatek,mt6323-auxadc.h
new file mode 100644
index 000000000000..6ee9a9ecffc1
--- /dev/null
+++ b/include/dt-bindings/iio/adc/mediatek,mt6323-auxadc.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+
+#ifndef _DT_BINDINGS_MEDIATEK_MT6323_AUXADC_H
+#define _DT_BINDINGS_MEDIATEK_MT6323_AUXADC_H
+
+#define MT6323_AUXADC_BATON2		0
+#define MT6323_AUXADC_CH6		1
+#define MT6323_AUXADC_BAT_TEMP		2
+#define MT6323_AUXADC_CHIP_TEMP		3
+#define MT6323_AUXADC_VCDT		4
+#define MT6323_AUXADC_BATON1		5
+#define MT6323_AUXADC_ISENSE		6
+#define MT6323_AUXADC_BATSNS		7
+#define MT6323_AUXADC_ACCDET		8
+#define MT6323_AUXADC_AUDIO0		9
+#define MT6323_AUXADC_AUDIO1		10
+#define MT6323_AUXADC_AUDIO2		11
+#define MT6323_AUXADC_AUDIO3		12
+#define MT6323_AUXADC_AUDIO4		13
+#define MT6323_AUXADC_AUDIO5		14
+#define MT6323_AUXADC_AUDIO6		15
+#define MT6323_AUXADC_AUDIO7		16
+
+#endif
diff --git a/include/linux/iio/common/inv_sensors_timestamp.h b/include/linux/iio/common/inv_sensors_timestamp.h
index 8d506f1e9df2..4f08204ede3b 100644
--- a/include/linux/iio/common/inv_sensors_timestamp.h
+++ b/include/linux/iio/common/inv_sensors_timestamp.h
@@ -13,9 +13,9 @@
  * @init_period:	chip initial period at reset in ns
  */
 struct inv_sensors_timestamp_chip {
-	uint32_t clock_period;
-	uint32_t jitter;
-	uint32_t init_period;
+	u32 clock_period;
+	u32 jitter;
+	u32 init_period;
 };
 
 /**
@@ -24,8 +24,8 @@ struct inv_sensors_timestamp_chip {
  * @up:	interval upper bound
  */
 struct inv_sensors_timestamp_interval {
-	int64_t lo;
-	int64_t up;
+	s64 lo;
+	s64 up;
 };
 
 /**
@@ -35,9 +35,9 @@ struct inv_sensors_timestamp_interval {
  * @values:	table of all measured values, use for computing the mean
  */
 struct inv_sensors_timestamp_acc {
-	uint32_t val;
+	u32 val;
 	size_t idx;
-	uint32_t values[32];
+	u32 values[32];
 };
 
 /**
@@ -46,6 +46,8 @@ struct inv_sensors_timestamp_acc {
  * @min_period:		minimal acceptable clock period
  * @max_period:		maximal acceptable clock period
  * @it:			interrupts interval timestamps
+ * @delta:		interval timestamps between several interrupts
+ * @delta_counter:	number of data samples in the delta interval
  * @timestamp:		store last timestamp for computing next data timestamp
  * @mult:		current internal period multiplier
  * @new_mult:		new set internal period multiplier (not yet effective)
@@ -54,13 +56,15 @@ struct inv_sensors_timestamp_acc {
  */
 struct inv_sensors_timestamp {
 	struct inv_sensors_timestamp_chip chip;
-	uint32_t min_period;
-	uint32_t max_period;
+	u32 min_period;
+	u32 max_period;
 	struct inv_sensors_timestamp_interval it;
-	int64_t timestamp;
-	uint32_t mult;
-	uint32_t new_mult;
-	uint32_t period;
+	struct inv_sensors_timestamp_interval delta;
+	u32 delta_counter;
+	s64 timestamp;
+	u32 mult;
+	u32 new_mult;
+	u32 period;
 	struct inv_sensors_timestamp_acc chip_period;
 };
 
@@ -68,19 +72,19 @@ void inv_sensors_timestamp_init(struct inv_sensors_timestamp *ts,
 				const struct inv_sensors_timestamp_chip *chip);
 
 int inv_sensors_timestamp_update_odr(struct inv_sensors_timestamp *ts,
-				     uint32_t period, bool fifo);
+				     u32 period, bool fifo);
 
 void inv_sensors_timestamp_interrupt(struct inv_sensors_timestamp *ts,
-				     size_t sample_nb, int64_t timestamp);
+				     size_t sample_nb, s64 timestamp);
 
-static inline int64_t inv_sensors_timestamp_pop(struct inv_sensors_timestamp *ts)
+static inline s64 inv_sensors_timestamp_pop(struct inv_sensors_timestamp *ts)
 {
 	ts->timestamp += ts->period;
 	return ts->timestamp;
 }
 
 void inv_sensors_timestamp_apply_odr(struct inv_sensors_timestamp *ts,
-				     uint32_t fifo_period, size_t fifo_nb,
+				     u32 fifo_period, size_t fifo_nb,
 				     unsigned int fifo_no);
 
 static inline void inv_sensors_timestamp_reset(struct inv_sensors_timestamp *ts)
@@ -88,6 +92,8 @@ static inline void inv_sensors_timestamp_reset(struct inv_sensors_timestamp *ts)
 	const struct inv_sensors_timestamp_interval interval_init = {0LL, 0LL};
 
 	ts->it = interval_init;
+	ts->delta = interval_init;
+	ts->delta_counter = 0;
 	ts->timestamp = 0;
 }
 
diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h
index 4e3099defc1d..d8944c9e5e90 100644
--- a/include/linux/iio/types.h
+++ b/include/linux/iio/types.h
@@ -7,6 +7,9 @@
 #ifndef _IIO_TYPES_H_
 #define _IIO_TYPES_H_
 
+#include <linux/types.h>
+#include <linux/wordpart.h>
+
 #include <uapi/linux/iio/types.h>
 
 enum iio_event_info {
@@ -34,6 +37,24 @@ enum iio_event_info {
 #define IIO_VAL_FRACTIONAL_LOG2 11
 #define IIO_VAL_CHAR 12
 
+#define IIO_VAL_DECIMAL64_BASE		32
+#define IIO_VAL_DECIMAL64_MILLI		(IIO_VAL_DECIMAL64_BASE + 3)
+#define IIO_VAL_DECIMAL64_MICRO		(IIO_VAL_DECIMAL64_BASE + 6)
+#define IIO_VAL_DECIMAL64_NANO		(IIO_VAL_DECIMAL64_BASE + 9)
+#define IIO_VAL_DECIMAL64_PICO		(IIO_VAL_DECIMAL64_BASE + 12)
+#define IIO_VAL_DECIMAL64_FEMTO		(IIO_VAL_DECIMAL64_BASE + 15)
+
+static inline s64 iio_val_s64_compose(s32 val0, s32 val1)
+{
+	return (s64)(((u64)val1 << 32) | (u32)val0);
+}
+
+static inline void iio_val_s64_decompose(s64 dec64, s32 *val0, s32 *val1)
+{
+	*val0 = lower_32_bits(dec64);
+	*val1 = upper_32_bits(dec64);
+}
+
 enum iio_available_type {
 	IIO_AVAIL_LIST,
 	IIO_AVAIL_RANGE,
diff --git a/include/linux/kstrtox.h b/include/linux/kstrtox.h
index 6c9282866770..b41b9736886f 100644
--- a/include/linux/kstrtox.h
+++ b/include/linux/kstrtox.h
@@ -97,6 +97,9 @@ int __must_check kstrtou8(const char *s, unsigned int base, u8 *res);
 int __must_check kstrtos8(const char *s, unsigned int base, s8 *res);
 int __must_check kstrtobool(const char *s, bool *res);
 
+int __must_check kstrtoudec64(const char *s, unsigned int scale, u64 *res);
+int __must_check kstrtodec64(const char *s, unsigned int scale, s64 *res);
+
 int __must_check kstrtoull_from_user(const char __user *s, size_t count, unsigned int base, unsigned long long *res);
 int __must_check kstrtoll_from_user(const char __user *s, size_t count, unsigned int base, long long *res);
 int __must_check kstrtoul_from_user(const char __user *s, size_t count, unsigned int base, unsigned long *res);
diff --git a/include/linux/math64.h b/include/linux/math64.h
index cc305206d89f..99189410d4bb 100644
--- a/include/linux/math64.h
+++ b/include/linux/math64.h
@@ -58,6 +58,20 @@ static inline u64 div64_u64_rem(u64 dividend, u64 divisor, u64 *remainder)
 }
 
 /**
+ * div64_s64_rem - signed 64bit divide with 64bit divisor and remainder
+ * @dividend: signed 64bit dividend
+ * @divisor: signed 64bit divisor
+ * @remainder: pointer to signed 64bit remainder
+ *
+ * Return: sets ``*remainder``, then returns dividend / divisor
+ */
+static inline s64 div64_s64_rem(s64 dividend, s64 divisor, s64 *remainder)
+{
+	*remainder = dividend % divisor;
+	return dividend / divisor;
+}
+
+/**
  * div64_u64 - unsigned 64bit divide with 64bit divisor
  * @dividend: unsigned 64bit dividend
  * @divisor: unsigned 64bit divisor
@@ -102,6 +116,10 @@ extern s64 div_s64_rem(s64 dividend, s32 divisor, s32 *remainder);
 extern u64 div64_u64_rem(u64 dividend, u64 divisor, u64 *remainder);
 #endif
 
+#ifndef div64_s64_rem
+extern s64 div64_s64_rem(s64 dividend, s64 divisor, s64 *remainder);
+#endif
+
 #ifndef div64_u64
 extern u64 div64_u64(u64 dividend, u64 divisor);
 #endif
diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h
index c9295c707041..d0fb714ca0fd 100644
--- a/include/uapi/linux/iio/types.h
+++ b/include/uapi/linux/iio/types.h
@@ -54,6 +54,7 @@ enum iio_chan_type {
 	IIO_ATTENTION,
 	IIO_ALTCURRENT,
 	IIO_COVERAGE,
+	IIO_VOLUMEFLOW,
 };
 
 enum iio_modifier {