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| author | Tom Hughes <tomhughes@chromium.org> | 2022-03-01 15:13:48 -0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2022-03-03 23:47:16 +0000 |
| commit | 49838b717e66fb85762df52a82dbe0acc461e672 (patch) | |
| tree | a989d0c2dc6225311d211facdc311d262f9102a4 /docs | |
| parent | 6071699953a94c31e76988ceb3ba6b857f6ef191 (diff) | |
| download | chrome-ec-49838b717e66fb85762df52a82dbe0acc461e672.tar.gz | |
docs/fingerprint: Add links to Linux kernel driver
BRANCH=none
BUG=b:217390997
TEST=view in gitiles
Signed-off-by: Tom Hughes <tomhughes@chromium.org>
Change-Id: If0a1d6a48cf039491b88bb2d1d7ccd22a94e7fbe
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3498718
Reviewed-by: Andrea Grandi <agrandi@google.com>
Reviewed-by: Bobby Casey <bobbycasey@google.com>
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/fingerprint/fingerprint.md | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/docs/fingerprint/fingerprint.md b/docs/fingerprint/fingerprint.md index 95a0b6b6e5..a111daafce 100644 --- a/docs/fingerprint/fingerprint.md +++ b/docs/fingerprint/fingerprint.md @@ -528,6 +528,13 @@ determines the [SKU information][Chrome OS Config SKU] (and thus the [fingerprint config][Chrome OS Config fingerprint]) from [CBI Info]. The SKU for a given device can be found by viewing `chrome://system/#platform_identity_sku`. +## Kernel Driver + +The kernel driver responsible for handling communication between the AP and +FPMCU is called [`cros_ec`] and is enabled with [`CONFIG_CROS_EC`] in the Linux +kernel. FPMCUs that are connected via SPI use [`cros_ec_spi.c`], while FPMCUs +that are connected via UART use [`cros_ec_uart.c`]. + [`common/fpsensor`]: https://chromium.googlesource.com/chromiumos/platform/ec/+/HEAD/common/fpsensor/ [`driver/fingerprint`]: https://chromium.googlesource.com/chromiumos/platform/ec/+/HEAD/driver/fingerprint [`nocturne_fp`]: https://chromium.googlesource.com/chromiumos/platform/ec/+/HEAD/board/nocturne_fp/ @@ -591,3 +598,7 @@ a given device can be found by viewing `chrome://system/#platform_identity_sku`. [regenerate the config]: https://chromium.googlesource.com/chromiumos/config/+/HEAD/README.md#making-configuration-changes-for-your-project [`CLFactory`]: https://chromium.googlesource.com/chromiumos/config/+/HEAD/README.md#making-bulk-changes-across-repos [Fingerprint MCU RAM and Flash]: ./fingerprint-ram-and-flash.md +[`CONFIG_CROS_EC`]: https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/third_party/kernel/upstream/drivers/platform/chrome/Makefile;l=11;drc=a4e493ca59115fc0692151c1818e5aadf0e79ad0 +[`cros_ec`]: https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/third_party/kernel/upstream/drivers/platform/chrome/cros_ec.c +[`cros_ec_spi.c`]: https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/third_party/kernel/upstream/drivers/platform/chrome/cros_ec_spi.c +[`cros_ec_uart.c`]: https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/third_party/kernel/upstream/drivers/platform/chrome/cros_ec_uart.c |