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OpenCloudOS-Kernel/drivers/platform/chrome/wilco_ec/Kconfig

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platform/chrome: Add new driver for Wilco EC This EC is an incompatible variant of the typical Chrome OS embedded controller. It uses the same low-level communication and a similar protocol with some significant differences. The EC firmware does not support the same mailbox commands so it is not registered as a cros_ec device type. This commit exports the wilco_ec_mailbox() function so that other modules can use it to communicate with the EC. Signed-off-by: Duncan Laurie <dlaurie@google.com> Signed-off-by: Nick Crews <ncrews@chromium.org> [Fix the sparse warning: symbol 'wilco_ec_transfer' was not declared] Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> [Fix Kconfig dependencies for wilco_ec] Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
2019-02-09 08:37:17 +08:00
config WILCO_EC
tristate "ChromeOS Wilco Embedded Controller"
platform/chrome: fix wilco-ec dependencies When CROS_EC_LPC is set to =m, we get a link failure for a builtin wilco-ec module: drivers/platform/chrome/wilco_ec/core.o: In function `wilco_ec_remove': core.c:(.text+0x26): undefined reference to `cros_ec_lpc_mec_destroy' drivers/platform/chrome/wilco_ec/core.o: In function `wilco_ec_probe': core.c:(.text+0x18c): undefined reference to `cros_ec_lpc_mec_init' core.c:(.text+0x224): undefined reference to `cros_ec_lpc_mec_destroy' drivers/platform/chrome/wilco_ec/mailbox.o: In function `wilco_ec_mailbox': mailbox.c:(.text+0x104): undefined reference to `cros_ec_lpc_io_bytes_mec' The problem with the existing CROS_EC_LPC_MEC dependency is that this is only for a 'bool' symbol, so the information about the exported functions being in a module is lost on the way, and we actually have to depend on both CROS_EC_LPC and CROS_EC_LPC_MEC. Fixes: 7b3d4f44abf0 ("platform/chrome: Add new driver for Wilco EC") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
2019-03-05 04:06:51 +08:00
depends on ACPI && X86 && CROS_EC_LPC && CROS_EC_LPC_MEC
platform/chrome: Add new driver for Wilco EC This EC is an incompatible variant of the typical Chrome OS embedded controller. It uses the same low-level communication and a similar protocol with some significant differences. The EC firmware does not support the same mailbox commands so it is not registered as a cros_ec device type. This commit exports the wilco_ec_mailbox() function so that other modules can use it to communicate with the EC. Signed-off-by: Duncan Laurie <dlaurie@google.com> Signed-off-by: Nick Crews <ncrews@chromium.org> [Fix the sparse warning: symbol 'wilco_ec_transfer' was not declared] Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> [Fix Kconfig dependencies for wilco_ec] Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
2019-02-09 08:37:17 +08:00
help
If you say Y here, you get support for talking to the ChromeOS
Wilco EC over an eSPI bus. 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 wilco_ec.
platform/chrome: wilco_ec: Add support for raw commands in debugfs Add a debugfs attribute that allows sending raw commands to the EC. This is useful for development and debug but should not be enabled in a production environment. To test: Get the EC firmware build date First send the request command > echo 00 f0 38 00 03 00 > raw Then read the result. "12/21/18" is in the middle of the response > cat raw 00 31 32 2f 32 31 2f 31 38 00 00 0f 01 00 01 00 .12/21/18....... Get the EC firmware build date First send the request command > echo 00 f0 38 00 03 00 > raw Then read the result. "12/21/18" is in the middle of the response > cat raw 00 31 32 2f 32 31 2f 31 38 00 00 0f 01 00 01 00 .12/21/18....... Signed-off-by: Duncan Laurie <dlaurie@google.com> Signed-off-by: Nick Crews <ncrews@chromium.org> [Fix off-by-one error in wilco_ec/debugfs.c] Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
2019-02-09 08:37:18 +08:00
config WILCO_EC_DEBUGFS
tristate "Enable raw access to EC via debugfs"
depends on WILCO_EC
help
If you say Y here, you get support for sending raw commands to
the Wilco EC via debugfs. These commands do not do any byte
manipulation and allow for testing arbitrary commands. This
interface is intended for debug only and will not be present
on production devices.