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ec/google/chromeec: Add new wrappers for host commands 

Add new functions to get (from the EC):
1) The number of USB-PD ports
2) The capabilities of each port (EC_CMD_GET_PD_PORT_CAPS)

BUG=b:146506369
BRANCH=none
TEST=Instrumented calls to these and verified the data

Change-Id: I57edbe1592cd28b005f01679ef8a8b5de3e1f586
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38540
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Tim Wawrzynczak 2020-01-22 15:22:18 -07:00 committed by Patrick Georgi
parent 87afa90731
commit e6078290c5
2 changed files with 86 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

59
src/ec/google/chromeec/ec.c
View File

@ -15,16 +15,18 @@
#include <stdint.h>
#include <string.h>
#include <cbmem.h>
#include <console/console.h>
#include <assert.h>
#include <bootmode.h>
#include <bootstate.h>
#include <cbmem.h>
#include <console/console.h>
#include <delay.h>
#include <device/device.h>
#include <device/path.h>
#include <elog.h>
#include <rtc.h>
#include <stdlib.h>
#include <security/vboot/vboot_common.h>
#include <stdlib.h>
#include <timer.h>
#include "chip.h"
@ -1419,6 +1421,57 @@ enum ec_current_image google_chromeec_get_current_image(void)
return ec_image_type;
}
int google_chromeec_get_num_pd_ports(int *num_ports)
{
struct ec_response_charge_port_count resp = {};
struct chromeec_command cmd = {
.cmd_code = EC_CMD_CHARGE_PORT_COUNT,
.cmd_version = 0,
.cmd_data_out = &resp,
.cmd_size_in = 0,
.cmd_size_out = sizeof(resp),
.cmd_dev_index = 0,
};
int rv;
rv = google_chromeec_command(&cmd);
if (rv)
return rv;
*num_ports = resp.port_count;
return 0;
}
int google_chromeec_get_pd_port_caps(int port,
struct usb_pd_port_caps *port_caps)
{
struct ec_params_get_pd_port_caps params = {
.port = port,
};
struct ec_response_get_pd_port_caps resp = {};
struct chromeec_command cmd = {
.cmd_code = EC_CMD_GET_PD_PORT_CAPS,
.cmd_version = 0,
.cmd_data_in = &params,
.cmd_size_in = sizeof(params),
.cmd_data_out = &resp,
.cmd_size_out = sizeof(resp),
.cmd_dev_index = 0,
};
int rv;
rv = google_chromeec_command(&cmd);
if (rv)
return rv;
port_caps->power_role_cap = resp.pd_power_role_cap;
port_caps->try_power_role_cap = resp.pd_try_power_role_cap;
port_caps->data_role_cap = resp.pd_data_role_cap;
port_caps->port_location = resp.pd_port_location;
return 0;
}
void google_chromeec_init(void)
{
google_chromeec_log_uptimeinfo();

30
src/ec/google/chromeec/ec.h
View File

@ -299,4 +299,34 @@ int google_chromeec_get_protocol_info(
*/
int google_chromeec_get_cmd_versions(int command, uint32_t *pmask);
/**
* Get number of PD-capable USB ports from EC.
*
* @param *num_ports If successful, num_ports is the number
* of PD-capable USB ports according to the EC.
* @return 0 on success, -1 on error
*/
int google_chromeec_get_num_pd_ports(int *num_ports);
/* Structure representing the capabilities of a USB-PD port */
struct usb_pd_port_caps {
enum ec_pd_power_role_caps power_role_cap;
enum ec_pd_try_power_role_caps try_power_role_cap;
enum ec_pd_data_role_caps data_role_cap;
enum ec_pd_port_location port_location;
};
/**
* Get role-based capabilities for a USB-PD port
*
* @param port Which port to get information about
* @param *power_role_cap The power-role capabillity of the port
* @param *try_power_role_cap The Try-power-role capability of the port
* @param *data_role_cap The data role capability of the port
* @param *port_location Location of the port on the device
* @return 0 on success, -1 on error
*/
int google_chromeec_get_pd_port_caps(int port,
struct usb_pd_port_caps *port_caps);
#endif /* _EC_GOOGLE_CHROMEEC_EC_H */