linux-toradex.git/include/linux/iio/common, branch v5.12-rc5

iio: cros_ec: unify hw fifo attributes into the core file

2020-09-29T16:27:07+00:00

The intent here is to minimize the use of iio_buffer_set_attrs(). Since we
are planning to add support for multiple IIO buffers per IIO device, the
issue has to do with:
1. Accessing 'indio_dev->buffer' directly (as is done with
   'iio_buffer_set_attrs(indio_dev->buffer, )').
2. The way that the buffer attributes would get handled or expanded when
   there are more buffers per IIO device. Current a sysfs kobj_type expands
   into a 'device' object that expands into an 'iio_dev' object.
   We will need to change this, so that the sysfs attributes for IIO
   buffers expand into IIO buffers at some point.

Right now, the current IIO framework works fine for the
'1 IIO device == 1 IIO buffer' case (that is now).

Signed-off-by: Alexandru Ardelean 
Reviewed-by: Guenter Roeck 
Link: https://lore.kernel.org/r/20200923130339.997902-1-alexandru.ardelean@analog.com
Signed-off-by: Jonathan Cameron

iio: cros_ec: Reapply range at resume

2020-06-14T10:49:41+00:00

EC does not currently preserve range across sensor reinit.
If sensor is powered down at suspend, it will default to the EC default
range at resume, not the range set by the host.

Save range if modified, and apply at resume.

Signed-off-by: Gwendal Grignou 
Signed-off-by: Jonathan Cameron

iio: cros_ec: Use Hertz as unit for sampling frequency

2020-03-30T06:24:49+00:00

To be compliant with other sensors, set and get sensor sampling
frequency in Hz, not mHz.

Fixes: ae7b02ad2f32 ("iio: common: cros_ec_sensors: Expose cros_ec_sensors frequency range via iio sysfs")
Signed-off-by: Gwendal Grignou 
Acked-by: Jonathan Cameron 
Signed-off-by: Enric Balletbo i Serra

iio: cros_ec: Report hwfifo_watermark_max

2020-03-28T21:04:33+00:00

Report the maximum amount of sample the EC can hold.
This is not tunable, but can be useful for application to find out the
maximum amount of time it can sleep when hwfifo_timeout is set to a
large number.

Signed-off-by: Gwendal Grignou 
Reviewed-by: Jonathan Cameron 
Signed-off-by: Enric Balletbo i Serra

iio: cros_ec: Expose hwfifo_timeout

2020-03-28T21:04:33+00:00

Expose EC minimal interrupt period through buffer/hwfifo_timeout:
- Maximal timeout is limited to 65s.
- When timeout for all sensors is set to 0, EC will not send events,
  even if the sensor sampling rate is greater than 0.

Rename frequency to sampling_frequency to match IIO ABI.

Signed-off-by: Gwendal Grignou 
Reviewed-by: Jonathan Cameron 
Signed-off-by: Enric Balletbo i Serra

iio: cros_ec: Remove pm function

2020-03-28T21:04:32+00:00

Since cros_ec_sensorhub is shutting down the FIFO when the device
suspends, no need to slow down the EC sampling period rate.

It was necesseary to do that before command CMD_FIFO_INT_ENABLE was
introduced, but now all supported chromebooks have it.

Signed-off-by: Gwendal Grignou 
Acked-by: Jonathan Cameron 
Acked-by: Lee Jones 
Signed-off-by: Enric Balletbo i Serra

iio: cros_ec: Register to cros_ec_sensorhub when EC supports FIFO

2020-03-28T21:04:32+00:00

When EC supports FIFO, each IIO device registers a callback, to put
samples in the buffer when they arrives from the FIFO.

When no FIFO, the user space app needs to call trigger_new, or better
register a high precision timer.

Signed-off-by: Gwendal Grignou 
Reviewed-by: Jonathan Cameron 
Signed-off-by: Enric Balletbo i Serra

iio: cros_ec: Move function description to .c file

2020-03-28T21:04:32+00:00

To prevent comment rot, move function description to
cros_ec_sensors_core.c.

Signed-off-by: Gwendal Grignou 
Acked-by: Jonathan Cameron 
Signed-off-by: Enric Balletbo i Serra

iio: st_sensors: Drop redundant parameter from st_sensors_of_name_probe()

2020-01-13T21:51:52+00:00

Since we have access to the struct device_driver and thus to the ID table,
there is no need to supply special parameters to st_sensors_of_name_probe().

Besides that we have a common API to get driver match data, there is
no need to do matching separately for OF and ACPI.

Taking into consideration above, simplify the ST sensors code.

Signed-off-by: Andy Shevchenko 
Signed-off-by: Jonathan Cameron

Merge tag 'tag-chrome-platform-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux

2019-09-19T21:14:28+00:00

Pull chrome platform updates from Benson Leung:
 "CrOS EC / MFD Migration:
    - Move cros_ec core driver from mfd into chrome platform.

  Wilco EC:
    - Add batt_ppid_info command to Wilco telemetry driver.

  CrOS EC:
    - cros_ec_rpmsg : Add support to inform EC of suspend/resume status
    - cros_ec_rpmsg : Fix race condition on probe failed
    - cros_ec_chardev : Add a poll handler to receive MKBP events

  Misc:
    - bugfixes in cros_usbpd_logger and cros_ec_ishtp"

* tag 'tag-chrome-platform-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux:
  platform/chrome: cros_usbpd_logger: null check create_singlethread_workqueue
  platform/chrome: cros_ec_chardev: Add a poll handler to receive MKBP events
  platform/chrome: cros_ec_rpmsg: Fix race with host command when probe failed
  platform/chrome: chromeos_tbmc: Report wake events
  mfd: cros_ec: Use mfd_add_hotplug_devices() helper
  mfd: cros_ec: Add convenience struct to define autodetectable CrOS EC subdevices
  mfd: cros_ec: Add convenience struct to define dedicated CrOS EC MCUs
  mfd: cros_ec: Use kzalloc and cros_ec_cmd_xfer_status helper
  mfd / platform: cros_ec: Reorganize platform and mfd includes
  mfd / platform: cros_ec: Rename config to a better name
  mfd: cros_ec: Switch to use the new cros-ec-chardev driver
  mfd / platform: cros_ec: Miscellaneous character device to talk with the EC
  mfd / platform: cros_ec: Move cros-ec core driver out from MFD
  mfd / platform: cros_ec: Handle chained ECs as platform devices
  platform/chrome: cros_ec_rpmsg: Add host command AP sleep state support
  platform/chrome: chromeos_laptop: drop checks of NULL-safe functions
  platform/chrome: wilco_ec: Add batt_ppid_info command to telemetry driver