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authorDuncan Laurie <dlaurie@google.com>2018-10-15 02:11:30 +0000
committerDuncan Laurie <dlaurie@chromium.org>2018-10-31 18:29:09 +0000
commit5f6f1dab7d8d098b6b08406ad3a99b1c3ba4cd05 (patch)
tree5ea22aef9f546dac1ce986561dec301ce8985d16 /src/ec
parent21dde8b25f610c02a8c71341a6579e9f850b690b (diff)
downloadcoreboot-5f6f1dab7d8d098b6b08406ad3a99b1c3ba4cd05.tar.xz
ec/google/wilco: Add mailbox helper functions
Add helper functions that make it more convenient to send and receive the most common types of commands to the Wilco embedded controller. Change-Id: I9cee1a3b2f9d507f6ecdfae9f4a34ba59056cb91 Signed-off-by: Duncan Laurie <dlaurie@google.com> Reviewed-on: https://review.coreboot.org/29114 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/ec')
-rw-r--r--src/ec/google/wilco/ec.h73
1 files changed, 73 insertions, 0 deletions
diff --git a/src/ec/google/wilco/ec.h b/src/ec/google/wilco/ec.h
index 0ce6166322..c46acdc0aa 100644
--- a/src/ec/google/wilco/ec.h
+++ b/src/ec/google/wilco/ec.h
@@ -44,4 +44,77 @@ int wilco_ec_mailbox(enum wilco_ec_msg_type type, uint8_t command,
const void *request_data, size_t request_size,
void *response_data, size_t response_size);
+/**
+ * wilco_ec_send
+ *
+ * Send a basic EC command with a one byte parameter with no
+ * returned data;
+ *
+ * @command: Command to execute
+ * @param: Command parameter to send
+ *
+ * @return negative error code on failure
+ */
+static inline int wilco_ec_send(uint8_t command, uint8_t param)
+{
+ return wilco_ec_mailbox(WILCO_EC_MSG_DEFAULT, command,
+ &param, sizeof(param), NULL, 0);
+}
+
+/**
+ * wilco_ec_send_noargs
+ *
+ * Send a basic EC command with no parameters and no returned data.
+ *
+ * @command: Command to execute
+ *
+ * @return negative error code on failure
+ */
+static inline int wilco_ec_send_noargs(uint8_t command)
+{
+ return wilco_ec_mailbox(WILCO_EC_MSG_DEFAULT, command,
+ NULL, 0, NULL, 0);
+}
+
+/**
+ * wilco_ec_sendrecv
+ *
+ * Send a basic EC command with a one byte parameter, ignoring the
+ * first byte of returned data to match the common behavior.
+ * The maximum response size is 31 due to the ignored byte.
+ *
+ * @command: Command to execute
+ * @param: Command parameter to send
+ * @data: Response data buffer
+ * @size: Number of bytes in response data buffer (max 31)
+ *
+ * @return number of bytes received, negative error code on failure
+ */
+static inline int wilco_ec_sendrecv(uint8_t command, uint8_t param,
+ void *data, size_t size)
+{
+ return wilco_ec_mailbox(WILCO_EC_MSG_DEFAULT, command,
+ &param, sizeof(param), data, size);
+}
+
+/**
+ * wilco_ec_sendrecv_noargs
+ *
+ * Send a basic EC command with no parameters, ignoring the
+ * first byte of returned data to match the common behavior.
+ * The maximum response size is 31 due to the ignored byte.
+ *
+ * @command: Command to execute
+ * @data: Response data buffer
+ * @size: Number of bytes in response data buffer (max 31)
+ *
+ * @return number of bytes received, negative error code on failure
+ */
+static inline int wilco_ec_sendrecv_noargs(uint8_t command,
+ void *data, size_t size)
+{
+ return wilco_ec_mailbox(WILCO_EC_MSG_DEFAULT, command,
+ NULL, 0, data, size);
+}
+
#endif /* EC_GOOGLE_WILCO_EC_H */