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ec_host_cmd: add eSPI peripheral for the host commands

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This commit adds the support for host commands being transported
by the eSPI subsystem.

Signed-off-by: Michał Barnaś <mb@semihalf.com>
This commit is contained in:
Michał Barnaś 2022-05-23 18:49:42 +02:00 • committed by Carles Cufí
commit 94458f88b9
9 changed files with 157 additions and 5 deletions
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11
subsys/mgmt/ec_host_cmd/ec_host_cmd_handler.c
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@ -10,9 +10,8 @@
#include <zephyr/kernel.h>
#include <string.h>
#if !DT_HAS_CHOSEN(zephyr_ec_host_interface)
#error Must chose zephyr,ec-host-interface in device tree
#endif
BUILD_ASSERT(DT_HAS_CHOSEN(zephyr_ec_host_interface),
"Must choose zephyr,ec-host-interface in device tree");
#define DT_HOST_CMD_DEV DT_CHOSEN(zephyr_ec_host_interface)
@ -82,9 +81,10 @@ static void handle_host_cmds_entry(void *arg1, void *arg2, void *arg3)
*/
send_error_response(ec_host_cmd_dev,
EC_HOST_CMD_ERROR);
continue;
}
/* rx buf and len now have valid incoming data */
/* rx buf and len now have valid incoming data */
if (*rx.len < RX_HEADER_SIZE) {
send_error_response(ec_host_cmd_dev,
EC_HOST_CMD_REQUEST_TRUNCATED);
@ -182,6 +182,7 @@ static void handle_host_cmds_entry(void *arg1, void *arg2, void *arg3)
tx_header->prtcl_ver = 3;
tx_header->result = EC_HOST_CMD_SUCCESS;
tx_header->data_len = args.output_buf_size;
tx_header->reserved = 0;
const uint16_t tx_valid_data_size =
tx_header->data_len + TX_HEADER_SIZE;
@ -192,6 +193,7 @@ static void handle_host_cmds_entry(void *arg1, void *arg2, void *arg3)
}
/* Calculate checksum */
tx_header->checksum = 0;
tx_header->checksum =
cal_checksum(tx_buffer, tx_valid_data_size);
@ -199,6 +201,7 @@ static void handle_host_cmds_entry(void *arg1, void *arg2, void *arg3)
.buf = tx_buffer,
.len = tx_valid_data_size,
};
ec_host_cmd_periph_send(ec_host_cmd_dev, &tx);
}
}