linux-toradex.git/drivers/platform/chrome/cros_ec_lpc.c, branch v4.13-rc5

cros_ec: Don't signal wake event for non-wake host events

2017-06-27T16:19:15+00:00

The subset of wake-enabled host events is defined by the EC, but the EC
may still send non-wake host events if we're in the process of
suspending. Get the mask of wake-enabled host events from the EC and
filter out non-wake events to prevent spurious aborted suspend
attempts.

Signed-off-by: Shawn Nematbakhsh 
Signed-off-by: Thierry Escande 
Acked-for-MFD-by: Lee Jones 
Signed-off-by: Benson Leung

platform/chrome: cros_ec_lpc: Add MKBP events support over ACPI

2017-06-23T23:12:17+00:00

This patch installs a notify handler to process MKBP events for EC
firmware directing them over ACPI.

Signed-off-by: Gwendal Grignou 
Signed-off-by: Thierry Escande 
Signed-off-by: Benson Leung

platform/chrome: cros_ec_lpc: Add power management ops

2017-06-23T23:12:16+00:00

This patch adds suspend and resume pm ops to the LPC ChromeOS EC driver.
These LPC handlers call the croc_ec generic handlers.

Signed-off-by: Archana Patni 
Signed-off-by: Thierry Escande 
Signed-off-by: Benson Leung

platform/chrome: cros_ec_lpc: Add support for GOOG004 ACPI device

2017-06-23T23:12:15+00:00

This patch removes platform_device_register() call and adds an ACPI
device id structure. The driver is now automatically probed for devices
with a GOOG0004 ACPI entry.

Signed-off-by: Gwendal Grignou 
Signed-off-by: Thierry Escande 
Signed-off-by: Benson Leung

platform/chrome: cros_ec_lpc: Add support for mec1322 EC

2017-06-23T23:12:01+00:00

This adds support for the ChromeOS LPC Microchip Embedded Controller
(mec1322) variant.

mec1322 accesses I/O region [800h, 9ffh] through embedded memory
interface (EMI) rather than LPC.

Signed-off-by: Shawn Nematbakhsh 
Signed-off-by: Thierry Escande 
Acked-by: Lee Jones 
Signed-off-by: Benson Leung

platform/chrome: cros_ec_lpc: Add R/W helpers to LPC protocol variants

2017-06-23T23:09:06+00:00

Call common functions for read / write to prepare support for future
LPC protocol variants which use different I/O ops than inb / outb.

Signed-off-by: Shawn Nematbakhsh 
Signed-off-by: Thierry Escande 
Acked-by: Lee Jones 
Signed-off-by: Benson Leung

platform/chrome: cros_ec_lpc - Add support for Google Pixel 2

2015-10-07T21:34:26+00:00

Since the verion of ACPI in Google BIOS does not enumerate the devices
in the LPC bus, the cros_ec_lpc driver resorts to DMI data to check if
a system is supported by the driver and autoload if built as a module.

Add information about the Google Pixel 2 to the DMI device table.

Signed-off-by: Javier Martinez Canillas 
Signed-off-by: Olof Johansson

platform/chrome: cros_ec_lpc - Use existing function to check EC result

2015-10-07T21:34:26+00:00

Commit 6db07b633658 ("mfd: cros_ec: Check result code from EC messages")
added a common cros_ec_check_result() function that can be used to check
the ec_msg->result for errors and warns about them.

Use the existing function instead of duplicating same check in the driver.

Signed-off-by: Javier Martinez Canillas 
Reviewed-by: Gwendal Grignou 
Tested-by: Gwendal Grignou 
Signed-off-by: Olof Johansson

mfd: cros_ec: Support multiple EC in a system

2015-06-15T12:18:23+00:00

Chromebooks can have more than one Embedded Controller so the
cros_ec device id has to be incremented for each EC registered.

Add a new structure to represent multiple EC as different char
devices (e.g: /dev/cros_ec, /dev/cros_pd). It connects to
cros_ec_device and allows sysfs inferface for cros_pd.

Also reduce number of allocated objects, make chromeos sysfs
class object a static and add refcounting to prevent object
deletion while command is in progress.

Signed-off-by: Gwendal Grignou 
Reviewed-by: Dmitry Torokhov 
Signed-off-by: Javier Martinez Canillas 
Tested-by: Heiko Stuebner 
Acked-by: Lee Jones 
Acked-by: Olof Johansson 
Signed-off-by: Lee Jones

mfd: cros_ec: add bus-specific proto v3 code

2015-06-15T12:18:22+00:00

Add proto v3 support to the SPI, I2C, and LPC.

Signed-off-by: Stephen Barber 
Signed-off-by: Javier Martinez Canillas 
Tested-by: Heiko Stuebner 
Reviewed-by: Gwendal Grignou 
Tested-by: Gwendal Grignou 
Acked-by: Lee Jones 
Acked-by: Olof Johansson 
Signed-off-by: Lee Jones