linux-stable.git/drivers/mfd/cros_ec_dev.c, branch linux-5.6.y

mfd: cros_ec: Check DT node for usbpd-notify add

2020-04-23T08:38:17+00:00

[ Upstream commit f8db89d14efb770dd59aa0ca74386e5de68310d5 ]

Add a check to ensure there is indeed an EC device tree entry before
adding the cros-usbpd-notify device. This covers configs where both
CONFIG_ACPI and CONFIG_OF are defined, but the EC device is defined
using device tree and not in ACPI.

Fixes: 4602dce0361e ("mfd: cros_ec: Add cros-usbpd-notify subdevice")
Signed-off-by: Prashant Malani 
Tested-by: Enric Balletbo i Serra 
Signed-off-by: Lee Jones 
Signed-off-by: Sasha Levin

Merge tag 'tag-chrome-platform-for-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux

2020-02-04T07:17:41+00:00

Pull chrome platform updates from Benson Leung:
 "CrOS EC:

   - Refactoring of some of cros_ec's headers:

     include/linux/mfd/cros_ec.h now removed, new cros_ec.h added to
     drivers/platform/chrome which contains shared operations of cros_ec
     transport drivers.

   - Response tracing in cros_ec_proto

  Wilco EC:

   - Fix unregistration order.

   - Fix keyboard backlight probing on systems without keyboard
     backlight

   - Minor cleanup (newlines in printks, COMPILE_TEST)

  Misc:

   - chromeos_laptop converted to use i2c_new_scanned_device instead of
     i2c_new_probed_device"

* tag 'tag-chrome-platform-for-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux:
  platform/chrome: cros_ec: Match implementation with headers
  platform/chrome: cros_ec: Drop unaligned.h include
  platform/chrome: wilco_ec: Allow wilco to be compiled in COMPILE_TEST
  platform/chrome: wilco_ec: Add newlines to printks
  platform/chrome: wilco_ec: Fix unregistration order
  cros_ec: treewide: Remove 'include/linux/mfd/cros_ec.h'
  platform/chrome: cros_ec_ishtp: Make init_lock static
  platform/chrome: chromeos_laptop: Convert to i2c_new_scanned_device
  platform/chrome: cros_ec_lpc: Use platform_get_irq_optional() for optional IRQs
  platform/chrome: cros_ec_proto: Add response tracing
  platform/chrome: cros_ec_trace: Match trace commands with EC commands

mfd: cros_ec: Add cros-usbpd-notify subdevice

2020-01-24T07:33:59+00:00

Add the cros-usbpd-notify driver as a subdevice on platforms that
support the EC_FEATURE_USB_PD EC feature flag and don't have the
ACPI PD notification device defined.

This driver allows other cros-ec devices to receive PD event
notifications from the Chrome OS Embedded Controller (EC) via a
notification chain.

Signed-off-by: Prashant Malani 
Reviewed-by: Benson Leung 
Signed-off-by: Lee Jones

cros_ec: treewide: Remove 'include/linux/mfd/cros_ec.h'

2020-01-07T16:36:46+00:00

This header file now only includes the cros_ec_dev struct, however, is the
'include/linux/platform_data/cros_ec_proto.h' who contains the definition of
all the Chrome OS EC related structs. There is no reason to have a
separate include for this struct so move to the place where other
structs are defined. That way, we can remove the include itself, but also
simplify the common pattern

    #include 
    #include 

for a single include

    #include 

The changes to remove the cros_ec.h include were generated with the
following shell script:

    git grep -l "" | xargs sed -i '//d'

Signed-off-by: Enric Balletbo i Serra 
Acked-by: Lee Jones 
Acked-by: Alexandre Belloni 
Acked-by: Jonathan Cameron 
Acked-by: Sebastian Reichel 
Acked-by: Hans Verkuil

mfd / platform / iio: cros_ec: Register sensor through sensorhub

2019-11-21T10:23:14+00:00

Remove the duplicated code in MFD, since MFD just registers cros-ec-sensorhub
if at least one sensor is present.

Change IIO cros-ec driver to get the pointer to the cros-ec-dev through
cros-ec-sensorhub.

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

mfd / platform: cros_ec: Add sensor_count and make check_features public

2019-11-21T10:23:13+00:00

Add a new function to return the number of MEMS sensors available in a
ChromeOS Embedded Controller. It uses MOTIONSENSE_CMD_DUMP if available
or a specific memory map ACPI registers to find out.

Also, make check_features public as it can be useful for other drivers
to know what the Embedded Controller supports.

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

mfd: cros_ec: Use mfd_add_hotplug_devices() helper

2019-09-02T10:34:24+00:00

Use mfd_add_hotplug_devices() helper to register the subdevices. The
helper allows us to reduce the boiler plate and also registers the
subdevices in the same way as used in other functions used in this
files.

Signed-off-by: Enric Balletbo i Serra 
Reviewed-by: Gwendal Grignou 
Tested-by: Gwendal Grignou 
Signed-off-by: Lee Jones

mfd: cros_ec: Add convenience struct to define autodetectable CrOS EC subdevices

2019-09-02T10:34:18+00:00

The CrOS EC is gaining lots of subdevices that are autodetectable by
sending the EC_FEATURE_GET_CMD, it takes fair amount of boiler plate
code to add those devices. So, add a struct that can be used to quickly
add new subdevices without having to duplicate code.

Signed-off-by: Enric Balletbo i Serra 
Acked-by: Andy Shevchenko 
Reviewed-by: Gwendal Grignou 
Tested-by: Gwendal Grignou 
Signed-off-by: Lee Jones

mfd: cros_ec: Add convenience struct to define dedicated CrOS EC MCUs

2019-09-02T10:34:12+00:00

With the increasing use of dedicated CrOS EC MCUs, it takes a fair amount
of boiler plate code to add those devices, add a struct that can be used
to specify a dedicated CrOS EC MCU so we can just add a new item to it to
define a new dedicated MCU.

Signed-off-by: Enric Balletbo i Serra 
Acked-by: Andy Shevchenko 
Reviewed-by: Gwendal Grignou 
Tested-by: Gwendal Grignou 
Signed-off-by: Lee Jones

mfd: cros_ec: Use kzalloc and cros_ec_cmd_xfer_status helper

2019-09-02T10:34:07+00:00

This patch makes use of cros_ec_cmd_xfer_status() instead of
cros_ec_cmd_xfer() so we can remove some redundant code. It also uses
kzalloc instead of kmalloc so we can remove more redundant code.

Signed-off-by: Enric Balletbo i Serra 
Acked-by: Andy Shevchenko 
Reviewed-by: Gwendal Grignou 
Tested-by: Gwendal Grignou 
Signed-off-by: Lee Jones