platform/chrome: Add ChromeOS EC ISHTP driver (26a14267) · Commits · 戴 / test

This driver implements a slim layer to enable the ChromeOS EC kernel stack (cros_ec) to communicate with ChromeOS EC firmware running on the Intel Integrated Sensor Hub (ISH). The driver registers a ChromeOS EC MFD device to connect with cros_ec kernel stack (upper layer), and it registers a client with the ISH Transport Protocol bus (lower layer) to talk with the ISH firwmare. See description of the ISHTP protocol at Documentation/hid/intel-ish-hid.txt Signed-off-by:

Rushikesh S Kadam <rushikesh.s.kadam@intel.com> Acked-by:

Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by:

Jett Rink <jettrink@chromium.org> Tested-by:

Jett Rink <jettrink@chromium.org> Signed-off-by:

Enric Balletbo i Serra <enric.balletbo@collabora.com>

drivers/platform/chrome/Kconfig

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Original line number	Diff line number	Diff line
		@@ -71,6 +71,19 @@ config CROS_EC_RPMSG
		To compile this driver as a module, choose M here: the
		module will be called cros_ec_rpmsg.

		config CROS_EC_ISHTP
		tristate "ChromeOS Embedded Controller (ISHTP)"
		depends on MFD_CROS_EC
		depends on INTEL_ISH_HID
		help
		If you say Y here, you get support for talking to the ChromeOS EC
		firmware running on Intel Integrated Sensor Hub (ISH), using the
		ISH Transport protocol (ISH-TP). This uses a simple byte-level
		protocol with a checksum.

		To compile this driver as a module, choose M here: the
		module will be called cros_ec_ishtp.

		config CROS_EC_SPI
		tristate "ChromeOS Embedded Controller (SPI)"
		depends on MFD_CROS_EC && SPI

drivers/platform/chrome/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -7,6 +7,7 @@ obj-$(CONFIG_CHROMEOS_LAPTOP) += chromeos_laptop.o
		obj-$(CONFIG_CHROMEOS_PSTORE) += chromeos_pstore.o
		obj-$(CONFIG_CHROMEOS_TBMC) += chromeos_tbmc.o
		obj-$(CONFIG_CROS_EC_I2C) += cros_ec_i2c.o
		obj-$(CONFIG_CROS_EC_ISHTP) += cros_ec_ishtp.o
		obj-$(CONFIG_CROS_EC_RPMSG) += cros_ec_rpmsg.o
		obj-$(CONFIG_CROS_EC_SPI) += cros_ec_spi.o
		cros_ec_lpcs-objs := cros_ec_lpc.o cros_ec_lpc_reg.o

drivers/platform/chrome/cros_ec_ishtp.c

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+763 −0

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