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authorLinus Torvalds <torvalds@linux-foundation.org>2020-04-08 21:25:49 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-04-08 21:25:49 -0700
commit413a103cf6e507f6304ec42b89ed45428942c43f (patch)
tree053352631dfb043af0b53c713295ee13693fc11a /include/linux/iio
parentMerge tag 'libnvdimm-for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm (diff)
parentplatform/chrome: cros_ec_spi: Wait for USECS, not NSECS (diff)
downloadlinux-dev-413a103cf6e507f6304ec42b89ed45428942c43f.tar.xz
linux-dev-413a103cf6e507f6304ec42b89ed45428942c43f.zip
Merge tag 'tag-chrome-platform-for-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux
Pull chrome platform updates from Benson Leung: cros-usbpd-notify and cros_ec_typec: - Add a new notification driver that handles and dispatches USB PD related events to other drivers. - Add a Type C connector class driver for cros_ec CrOS EC: - Introduce a new cros_ec_cmd_xfer_status helper Sensors/iio: - A series from Gwendal that adds Cros EC sensor hub FIFO support Wilco EC: - Fix a build warning. - Platform data shouldn't include kernel.h Misc: - i2c api conversion complete, with i2c_new_client_device instead of i2c_new_device in chromeos_laptop. - Replace zero-length array with flexible-array member in cros_ec_chardev and wilco_ec - Update new structure for SPI transfer delays in cros_ec_spi * tag 'tag-chrome-platform-for-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux: (34 commits) platform/chrome: cros_ec_spi: Wait for USECS, not NSECS iio: cros_ec: Use Hertz as unit for sampling frequency iio: cros_ec: Report hwfifo_watermark_max iio: cros_ec: Expose hwfifo_timeout iio: cros_ec: Remove pm function iio: cros_ec: Register to cros_ec_sensorhub when EC supports FIFO iio: expose iio_device_set_clock iio: cros_ec: Move function description to .c file platform/chrome: cros_ec_sensorhub: Add median filter platform/chrome: cros_ec_sensorhub: Add code to spread timestmap platform/chrome: cros_ec_sensorhub: Add FIFO support platform/chrome: cros_ec_sensorhub: Add the number of sensors in sensorhub platform/chrome: chromeos_laptop: make I2C API conversion complete platform/chrome: wilco_ec: event: Replace zero-length array with flexible-array member platform/chrome: cros_ec_chardev: Replace zero-length array with flexible-array member platform/chrome: cros_ec_typec: Update port info from EC platform/chrome: Add Type C connector class driver platform/chrome: cros_usbpd_notify: Pull PD_HOST_EVENT status platform/chrome: cros_usbpd_notify: Amend ACPI driver to plat platform/chrome: cros_usbpd_notify: Add driver data struct ...
Diffstat (limited to 'include/linux/iio')
-rw-r--r--include/linux/iio/common/cros_ec_sensors_core.h104
-rw-r--r--include/linux/iio/iio.h2
2 files changed, 16 insertions, 90 deletions
diff --git a/include/linux/iio/common/cros_ec_sensors_core.h b/include/linux/iio/common/cros_ec_sensors_core.h
index bb331e6356a9..7bc961defa87 100644
--- a/include/linux/iio/common/cros_ec_sensors_core.h
+++ b/include/linux/iio/common/cros_ec_sensors_core.h
@@ -12,6 +12,7 @@
#include <linux/irqreturn.h>
#include <linux/platform_data/cros_ec_commands.h>
#include <linux/platform_data/cros_ec_proto.h>
+#include <linux/platform_data/cros_ec_sensorhub.h>
enum {
CROS_EC_SENSOR_X,
@@ -29,8 +30,7 @@ enum {
*/
#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 */
+typedef irqreturn_t (*cros_ec_sensors_capture_t)(int irq, void *p);
/**
* struct cros_ec_sensors_core_state - state data for EC sensors IIO driver
@@ -50,7 +50,9 @@ enum {
* 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
+ * @fifo_max_event_count: Size of the EC sensor FIFO
+ * @frequencies: Table of known available frequencies:
+ * 0, Min and Max in mHz
*/
struct cros_ec_sensors_core_state {
struct cros_ec_device *ec;
@@ -73,101 +75,34 @@ struct cros_ec_sensors_core_state {
int (*read_ec_sensors_data)(struct iio_dev *indio_dev,
unsigned long scan_mask, s16 *data);
- int curr_sampl_freq;
-
- /* Table of known available frequencies : 0, Min and Max in mHz */
- int frequencies[3];
+ u32 fifo_max_event_count;
+ int frequencies[6];
};
-/**
- * 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);
+ struct iio_dev *indio_dev, bool physical_device,
+ cros_ec_sensors_capture_t trigger_capture,
+ cros_ec_sensorhub_push_data_cb_t push_data);
-/**
- * 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);
+int cros_ec_sensors_push_data(struct iio_dev *indio_dev,
+ s16 *data,
+ s64 timestamp);
-/**
- * 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_read_avail() - get available values
- * @indio_dev: pointer to state information for device
- * @chan: channel specification structure table
- * @vals: list of available values
- * @type: type of data returned
- * @length: number of data returned in the array
- * @mask: specifies which values to be requested
- *
- * Return: an error code, IIO_AVAIL_RANGE or IIO_AVAIL_LIST
- */
int cros_ec_sensors_core_read_avail(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
const int **vals,
@@ -175,23 +110,12 @@ int cros_ec_sensors_core_read_avail(struct iio_dev *indio_dev,
int *length,
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[];
+extern const struct attribute *cros_ec_sensor_fifo_attributes[];
#endif /* __CROS_EC_SENSORS_CORE_H */
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index eed58ed2f368..17f56a070b20 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -629,6 +629,8 @@ static inline clockid_t iio_device_get_clock(const struct iio_dev *indio_dev)
return indio_dev->clock_id;
}
+int iio_device_set_clock(struct iio_dev *indio_dev, clockid_t clock_id);
+
/**
* dev_to_iio_dev() - Get IIO device struct from a device struct
* @dev: The device embedded in the IIO device