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The MFD driver should only have the logic to instantiate its child devices and setup any shared resources that will be used by the subdevices drivers. The cros_ec MFD is more complex than expected since it also has helpers to communicate with the EC. So the driver will only get more bigger as other protocols are supported in the future. So move the communication protocol helpers to its own driver as drivers/platform/chrome/cros_ec_proto.c. Suggested-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Tested-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Lee Jones <lee.jones@linaro.org> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Lee Jones <lee.jones@linaro.org>
67 lines
2.2 KiB
Text
67 lines
2.2 KiB
Text
#
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# Platform support for Chrome OS hardware (Chromebooks and Chromeboxes)
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#
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menuconfig CHROME_PLATFORMS
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bool "Platform support for Chrome hardware"
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depends on X86 || ARM
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---help---
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Say Y here to get to see options for platform support for
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various Chromebooks and Chromeboxes. This option alone does
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not add any kernel code.
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If you say N, all options in this submenu will be skipped and disabled.
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if CHROME_PLATFORMS
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config CHROMEOS_LAPTOP
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tristate "Chrome OS Laptop"
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depends on I2C && DMI && X86
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---help---
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This driver instantiates i2c and smbus devices such as
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light sensors and touchpads.
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If you have a supported Chromebook, choose Y or M here.
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The module will be called chromeos_laptop.
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config CHROMEOS_PSTORE
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tristate "Chrome OS pstore support"
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depends on X86
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---help---
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This module instantiates the persistent storage on x86 ChromeOS
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devices. It can be used to store away console logs and crash
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information across reboots.
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The range of memory used is 0xf00000-0x1000000, traditionally
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the memory used to back VGA controller memory.
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If you have a supported Chromebook, choose Y or M here.
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The module will be called chromeos_pstore.
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config CROS_EC_CHARDEV
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tristate "Chrome OS Embedded Controller userspace device interface"
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depends on CROS_EC_PROTO
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---help---
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This driver adds support to talk with the ChromeOS EC from userspace.
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If you have a supported Chromebook, choose Y or M here.
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The module will be called cros_ec_dev.
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config CROS_EC_LPC
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tristate "ChromeOS Embedded Controller (LPC)"
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depends on MFD_CROS_EC && CROS_EC_PROTO && (X86 || COMPILE_TEST)
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help
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If you say Y here, you get support for talking to the ChromeOS EC
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over an LPC bus. This uses a simple byte-level protocol with a
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checksum. This is used for userspace access only. The kernel
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typically has its own communication methods.
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To compile this driver as a module, choose M here: the
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module will be called cros_ec_lpc.
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config CROS_EC_PROTO
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bool
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help
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ChromeOS EC communication protocol helpers.
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endif # CHROMEOS_PLATFORMS
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