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-rw-r--r--include/linux/iio/adc/ad_sigma_delta.h24
-rw-r--r--include/linux/iio/adc/stm32-dfsdm-adc.h2
-rw-r--r--include/linux/iio/common/cros_ec_sensors_core.h180
-rw-r--r--include/linux/iio/iio.h24
-rw-r--r--include/linux/kernel.h16
-rw-r--r--include/linux/platform_data/tsl2772.h101
6 files changed, 328 insertions, 19 deletions
diff --git a/include/linux/iio/adc/ad_sigma_delta.h b/include/linux/iio/adc/ad_sigma_delta.h
index 1fc7abd28b0b..730ead1a46df 100644
--- a/include/linux/iio/adc/ad_sigma_delta.h
+++ b/include/linux/iio/adc/ad_sigma_delta.h
@@ -127,7 +127,7 @@ void ad_sd_cleanup_buffer_and_trigger(struct iio_dev *indio_dev);
int ad_sd_validate_trigger(struct iio_dev *indio_dev, struct iio_trigger *trig);
#define __AD_SD_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
- _storagebits, _shift, _extend_name, _type) \
+ _storagebits, _shift, _extend_name, _type, _mask_all) \
{ \
.type = (_type), \
.differential = (_channel2 == -1 ? 0 : 1), \
@@ -139,7 +139,7 @@ int ad_sd_validate_trigger(struct iio_dev *indio_dev, struct iio_trigger *trig);
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
BIT(IIO_CHAN_INFO_OFFSET), \
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
- .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
+ .info_mask_shared_by_all = _mask_all, \
.scan_index = (_si), \
.scan_type = { \
.sign = 'u', \
@@ -153,25 +153,35 @@ int ad_sd_validate_trigger(struct iio_dev *indio_dev, struct iio_trigger *trig);
#define AD_SD_DIFF_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
_storagebits, _shift) \
__AD_SD_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
- _storagebits, _shift, NULL, IIO_VOLTAGE)
+ _storagebits, _shift, NULL, IIO_VOLTAGE, \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
#define AD_SD_SHORTED_CHANNEL(_si, _channel, _address, _bits, \
_storagebits, _shift) \
__AD_SD_CHANNEL(_si, _channel, _channel, _address, _bits, \
- _storagebits, _shift, "shorted", IIO_VOLTAGE)
+ _storagebits, _shift, "shorted", IIO_VOLTAGE, \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
#define AD_SD_CHANNEL(_si, _channel, _address, _bits, \
_storagebits, _shift) \
__AD_SD_CHANNEL(_si, _channel, -1, _address, _bits, \
- _storagebits, _shift, NULL, IIO_VOLTAGE)
+ _storagebits, _shift, NULL, IIO_VOLTAGE, \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD_SD_CHANNEL_NO_SAMP_FREQ(_si, _channel, _address, _bits, \
+ _storagebits, _shift) \
+ __AD_SD_CHANNEL(_si, _channel, -1, _address, _bits, \
+ _storagebits, _shift, NULL, IIO_VOLTAGE, 0)
#define AD_SD_TEMP_CHANNEL(_si, _address, _bits, _storagebits, _shift) \
__AD_SD_CHANNEL(_si, 0, -1, _address, _bits, \
- _storagebits, _shift, NULL, IIO_TEMP)
+ _storagebits, _shift, NULL, IIO_TEMP, \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
#define AD_SD_SUPPLY_CHANNEL(_si, _channel, _address, _bits, _storagebits, \
_shift) \
__AD_SD_CHANNEL(_si, _channel, -1, _address, _bits, \
- _storagebits, _shift, "supply", IIO_VOLTAGE)
+ _storagebits, _shift, "supply", IIO_VOLTAGE, \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
#endif
diff --git a/include/linux/iio/adc/stm32-dfsdm-adc.h b/include/linux/iio/adc/stm32-dfsdm-adc.h
index e7dc7a542a4e..0da298b41737 100644
--- a/include/linux/iio/adc/stm32-dfsdm-adc.h
+++ b/include/linux/iio/adc/stm32-dfsdm-adc.h
@@ -9,6 +9,8 @@
#ifndef STM32_DFSDM_ADC_H
#define STM32_DFSDM_ADC_H
+#include <linux/iio/iio.h>
+
int stm32_dfsdm_get_buff_cb(struct iio_dev *iio_dev,
int (*cb)(const void *data, size_t size,
void *private),
diff --git a/include/linux/iio/common/cros_ec_sensors_core.h b/include/linux/iio/common/cros_ec_sensors_core.h
new file mode 100644
index 000000000000..ce16445411ac
--- /dev/null
+++ b/include/linux/iio/common/cros_ec_sensors_core.h
@@ -0,0 +1,180 @@
+/*
+ * ChromeOS EC sensor hub
+ *
+ * Copyright (C) 2016 Google, Inc
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __CROS_EC_SENSORS_CORE_H
+#define __CROS_EC_SENSORS_CORE_H
+
+#include <linux/iio/iio.h>
+#include <linux/irqreturn.h>
+#include <linux/mfd/cros_ec.h>
+
+enum {
+ CROS_EC_SENSOR_X,
+ CROS_EC_SENSOR_Y,
+ CROS_EC_SENSOR_Z,
+ CROS_EC_SENSOR_MAX_AXIS,
+};
+
+/* EC returns sensor values using signed 16 bit registers */
+#define CROS_EC_SENSOR_BITS 16
+
+/*
+ * 4 16 bit channels are allowed.
+ * Good enough for current sensors, they use up to 3 16 bit vectors.
+ */
+#define CROS_EC_SAMPLE_SIZE (sizeof(s64) * 2)
+
+/* Minimum sampling period to use when device is suspending */
+#define CROS_EC_MIN_SUSPEND_SAMPLING_FREQUENCY 1000 /* 1 second */
+
+/**
+ * struct cros_ec_sensors_core_state - state data for EC sensors IIO driver
+ * @ec: cros EC device structure
+ * @cmd_lock: lock used to prevent simultaneous access to the
+ * commands.
+ * @msg: cros EC command structure
+ * @param: motion sensor parameters structure
+ * @resp: motion sensor response structure
+ * @type: type of motion sensor
+ * @loc: location where the motion sensor is placed
+ * @calib: calibration parameters. Note that trigger
+ * captured data will always provide the calibrated
+ * data
+ * @samples: static array to hold data from a single capture.
+ * For each channel we need 2 bytes, except for
+ * the timestamp. The timestamp is always last and
+ * is always 8-byte aligned.
+ * @read_ec_sensors_data: function used for accessing sensors values
+ * @cuur_sampl_freq: current sampling period
+ */
+struct cros_ec_sensors_core_state {
+ struct cros_ec_device *ec;
+ struct mutex cmd_lock;
+
+ struct cros_ec_command *msg;
+ struct ec_params_motion_sense param;
+ struct ec_response_motion_sense *resp;
+
+ enum motionsensor_type type;
+ enum motionsensor_location loc;
+
+ s16 calib[CROS_EC_SENSOR_MAX_AXIS];
+
+ u8 samples[CROS_EC_SAMPLE_SIZE];
+
+ int (*read_ec_sensors_data)(struct iio_dev *indio_dev,
+ unsigned long scan_mask, s16 *data);
+
+ int curr_sampl_freq;
+};
+
+/**
+ * cros_ec_sensors_read_lpc() - retrieve data from EC shared memory
+ * @indio_dev: pointer to IIO device
+ * @scan_mask: bitmap of the sensor indices to scan
+ * @data: location to store data
+ *
+ * This is the safe function for reading the EC data. It guarantees that the
+ * data sampled was not modified by the EC while being read.
+ *
+ * Return: 0 on success, -errno on failure.
+ */
+int cros_ec_sensors_read_lpc(struct iio_dev *indio_dev, unsigned long scan_mask,
+ s16 *data);
+
+/**
+ * cros_ec_sensors_read_cmd() - retrieve data using the EC command protocol
+ * @indio_dev: pointer to IIO device
+ * @scan_mask: bitmap of the sensor indices to scan
+ * @data: location to store data
+ *
+ * Return: 0 on success, -errno on failure.
+ */
+int cros_ec_sensors_read_cmd(struct iio_dev *indio_dev, unsigned long scan_mask,
+ s16 *data);
+
+struct platform_device;
+/**
+ * cros_ec_sensors_core_init() - basic initialization of the core structure
+ * @pdev: platform device created for the sensors
+ * @indio_dev: iio device structure of the device
+ * @physical_device: true if the device refers to a physical device
+ *
+ * Return: 0 on success, -errno on failure.
+ */
+int cros_ec_sensors_core_init(struct platform_device *pdev,
+ struct iio_dev *indio_dev, bool physical_device);
+
+/**
+ * cros_ec_sensors_capture() - the trigger handler function
+ * @irq: the interrupt number.
+ * @p: a pointer to the poll function.
+ *
+ * On a trigger event occurring, if the pollfunc is attached then this
+ * handler is called as a threaded interrupt (and hence may sleep). It
+ * is responsible for grabbing data from the device and pushing it into
+ * the associated buffer.
+ *
+ * Return: IRQ_HANDLED
+ */
+irqreturn_t cros_ec_sensors_capture(int irq, void *p);
+
+/**
+ * cros_ec_motion_send_host_cmd() - send motion sense host command
+ * @st: pointer to state information for device
+ * @opt_length: optional length to reduce the response size, useful on the data
+ * path. Otherwise, the maximal allowed response size is used
+ *
+ * When called, the sub-command is assumed to be set in param->cmd.
+ *
+ * Return: 0 on success, -errno on failure.
+ */
+int cros_ec_motion_send_host_cmd(struct cros_ec_sensors_core_state *st,
+ u16 opt_length);
+
+/**
+ * cros_ec_sensors_core_read() - function to request a value from the sensor
+ * @st: pointer to state information for device
+ * @chan: channel specification structure table
+ * @val: will contain one element making up the returned value
+ * @val2: will contain another element making up the returned value
+ * @mask: specifies which values to be requested
+ *
+ * Return: the type of value returned by the device
+ */
+int cros_ec_sensors_core_read(struct cros_ec_sensors_core_state *st,
+ struct iio_chan_spec const *chan,
+ int *val, int *val2, long mask);
+
+/**
+ * cros_ec_sensors_core_write() - function to write a value to the sensor
+ * @st: pointer to state information for device
+ * @chan: channel specification structure table
+ * @val: first part of value to write
+ * @val2: second part of value to write
+ * @mask: specifies which values to write
+ *
+ * Return: the type of value returned by the device
+ */
+int cros_ec_sensors_core_write(struct cros_ec_sensors_core_state *st,
+ struct iio_chan_spec const *chan,
+ int val, int val2, long mask);
+
+extern const struct dev_pm_ops cros_ec_sensors_pm_ops;
+
+/* List of extended channel specification for all sensors */
+extern const struct iio_chan_spec_ext_info cros_ec_sensors_ext_info[];
+
+#endif /* __CROS_EC_SENSORS_CORE_H */
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index 11579fd4126e..a74cb177dc6f 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -183,18 +183,18 @@ struct iio_event_spec {
* @address: Driver specific identifier.
* @scan_index: Monotonic index to give ordering in scans when read
* from a buffer.
- * @scan_type: sign: 's' or 'u' to specify signed or unsigned
- * realbits: Number of valid bits of data
- * storagebits: Realbits + padding
- * shift: Shift right by this before masking out
- * realbits.
- * repeat: Number of times real/storage bits
- * repeats. When the repeat element is
- * more than 1, then the type element in
- * sysfs will show a repeat value.
- * Otherwise, the number of repetitions is
- * omitted.
- * endianness: little or big endian
+ * @scan_type: struct describing the scan type
+ * @scan_type.sign: 's' or 'u' to specify signed or unsigned
+ * @scan_type.realbits: Number of valid bits of data
+ * @scan_type.storagebits: Realbits + padding
+ * @scan_type.shift: Shift right by this before masking out
+ * realbits.
+ * @scan_type.repeat: Number of times real/storage bits repeats.
+ * When the repeat element is more than 1, then
+ * the type element in sysfs will show a repeat
+ * value. Otherwise, the number of repetitions
+ * is omitted.
+ * @scan_type.endianness: little or big endian
* @info_mask_separate: What information is to be exported that is specific to
* this channel.
* @info_mask_separate_available: What availability information is to be
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 7c4e8f1f72d8..d23123238534 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -966,6 +966,22 @@ static inline void ftrace_dump(enum ftrace_dump_mode oops_dump_mode) { }
"pointer type mismatch in container_of()"); \
((type *)(__mptr - offsetof(type, member))); })
+/**
+ * container_of_safe - cast a member of a structure out to the containing structure
+ * @ptr: the pointer to the member.
+ * @type: the type of the container struct this is embedded in.
+ * @member: the name of the member within the struct.
+ *
+ * If IS_ERR_OR_NULL(ptr), ptr is returned unchanged.
+ */
+#define container_of_safe(ptr, type, member) ({ \
+ void *__mptr = (void *)(ptr); \
+ BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \
+ !__same_type(*(ptr), void), \
+ "pointer type mismatch in container_of()"); \
+ IS_ERR_OR_NULL(__mptr) ? ERR_CAST(__mptr) : \
+ ((type *)(__mptr - offsetof(type, member))); })
+
/* Rebuild everything on CONFIG_FTRACE_MCOUNT_RECORD */
#ifdef CONFIG_FTRACE_MCOUNT_RECORD
# define REBUILD_DUE_TO_FTRACE_MCOUNT_RECORD
diff --git a/include/linux/platform_data/tsl2772.h b/include/linux/platform_data/tsl2772.h
new file mode 100644
index 000000000000..f8ade15a35e2
--- /dev/null
+++ b/include/linux/platform_data/tsl2772.h
@@ -0,0 +1,101 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Device driver for monitoring ambient light intensity (lux)
+ * and proximity (prox) within the TAOS TSL2772 family of devices.
+ *
+ * Copyright (c) 2012, TAOS Corporation.
+ * Copyright (c) 2017-2018 Brian Masney <masneyb@onstation.org>
+ */
+
+#ifndef __TSL2772_H
+#define __TSL2772_H
+
+struct tsl2772_lux {
+ unsigned int ch0;
+ unsigned int ch1;
+};
+
+/* Max number of segments allowable in LUX table */
+#define TSL2772_MAX_LUX_TABLE_SIZE 6
+/* The default LUX tables all have 3 elements. */
+#define TSL2772_DEF_LUX_TABLE_SZ 3
+#define TSL2772_DEFAULT_TABLE_BYTES (sizeof(struct tsl2772_lux) * \
+ TSL2772_DEF_LUX_TABLE_SZ)
+
+/* Proximity diode to use */
+#define TSL2772_DIODE0 0x01
+#define TSL2772_DIODE1 0x02
+#define TSL2772_DIODE_BOTH 0x03
+
+/* LED Power */
+#define TSL2772_100_mA 0x00
+#define TSL2772_50_mA 0x01
+#define TSL2772_25_mA 0x02
+#define TSL2772_13_mA 0x03
+
+/**
+ * struct tsl2772_settings - Settings for the tsl2772 driver
+ * @als_time: Integration time of the ALS channel ADCs in 2.73 ms
+ * increments. Total integration time is
+ * (256 - als_time) * 2.73.
+ * @als_gain: Index into the tsl2772_als_gain array.
+ * @als_gain_trim: Default gain trim to account for aperture effects.
+ * @wait_time: Time between proximity and ALS cycles in 2.73
+ * periods.
+ * @prox_time: Integration time of the proximity ADC in 2.73 ms
+ * increments. Total integration time is
+ * (256 - prx_time) * 2.73.
+ * @prox_gain: Index into the tsl2772_prx_gain array.
+ * @als_prox_config: The value of the ALS / Proximity configuration
+ * register.
+ * @als_cal_target: Known external ALS reading for calibration.
+ * @als_persistence: H/W Filters, Number of 'out of limits' ALS readings.
+ * @als_interrupt_en: Enable/Disable ALS interrupts
+ * @als_thresh_low: CH0 'low' count to trigger interrupt.
+ * @als_thresh_high: CH0 'high' count to trigger interrupt.
+ * @prox_persistence: H/W Filters, Number of 'out of limits' proximity
+ * readings.
+ * @prox_interrupt_en: Enable/Disable proximity interrupts.
+ * @prox_thres_low: Low threshold proximity detection.
+ * @prox_thres_high: High threshold proximity detection.
+ * @prox_pulse_count: Number if proximity emitter pulses.
+ * @prox_max_samples_cal: The number of samples that are taken when performing
+ * a proximity calibration.
+ * @prox_diode Which diode(s) to use for driving the external
+ * LED(s) for proximity sensing.
+ * @prox_power The amount of power to use for the external LED(s).
+ */
+struct tsl2772_settings {
+ int als_time;
+ int als_gain;
+ int als_gain_trim;
+ int wait_time;
+ int prox_time;
+ int prox_gain;
+ int als_prox_config;
+ int als_cal_target;
+ u8 als_persistence;
+ bool als_interrupt_en;
+ int als_thresh_low;
+ int als_thresh_high;
+ u8 prox_persistence;
+ bool prox_interrupt_en;
+ int prox_thres_low;
+ int prox_thres_high;
+ int prox_pulse_count;
+ int prox_max_samples_cal;
+ int prox_diode;
+ int prox_power;
+};
+
+/**
+ * struct tsl2772_platform_data - Platform callback, glass and defaults
+ * @platform_lux_table: Device specific glass coefficents
+ * @platform_default_settings: Device specific power on defaults
+ */
+struct tsl2772_platform_data {
+ struct tsl2772_lux platform_lux_table[TSL2772_MAX_LUX_TABLE_SIZE];
+ struct tsl2772_settings *platform_default_settings;
+};
+
+#endif /* __TSL2772_H */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.