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ec/google/chromeec: Add new API for USB-C mux handling 

Add google_chromeec_get_usbc_mux_info() to obtain USB-C mux
related information.

BUG=b:192947843

Signed-off-by: Derek Huang <derek.huang@intel.corp-partner.google.com>
Change-Id: Idc27f23214c2d5b91334ae3efe248100329964ba
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58059
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Derek Huang 2021-09-29 21:59:45 +08:00 committed by Tim Wawrzynczak
parent c0bd123408
commit 63ffc1adc0
2 changed files with 44 additions and 0 deletions
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36
src/ec/google/chromeec/ec.c
View File

@ -1565,6 +1565,42 @@ int google_chromeec_usb_get_pd_mux_info(int port, uint8_t *flags)
return 0;
}
/*
* Obtain any USB-C mux data needed for the specified port
* in: physical port number of the type-c port
* out: struct usbc_mux_info mux_info stores USB-C mux data
* Return: 0 on success, -1 on error
*/
int google_chromeec_get_usbc_mux_info(int port, struct usbc_mux_info *mux_info)
{
uint8_t mux_flags;
uint8_t dp_pin_mode;
bool ufp, dbg_acc, active_cable;
if (google_chromeec_usb_get_pd_mux_info(port, &mux_flags) < 0) {
printk(BIOS_ERR, "Port C%d: get_pd_mux_info failed\n", port);
return -1;
}
if (google_chromeec_usb_pd_get_info(port, &ufp, &dbg_acc,
&active_cable, &dp_pin_mode) < 0) {
printk(BIOS_ERR, "Port C%d: pd_control failed\n", port);
return -1;
}
mux_info->usb = !!(mux_flags & USB_PD_MUX_USB_ENABLED);
mux_info->dp = !!(mux_flags & USB_PD_MUX_DP_ENABLED);
mux_info->polarity = !!(mux_flags & USB_PD_MUX_POLARITY_INVERTED);
mux_info->hpd_irq = !!(mux_flags & USB_PD_MUX_HPD_IRQ);
mux_info->hpd_lvl = !!(mux_flags & USB_PD_MUX_HPD_LVL);
mux_info->ufp = !!ufp;
mux_info->dbg_acc = !!dbg_acc;
mux_info->cable = !!active_cable;
mux_info->dp_pin_mode = dp_pin_mode;
return 0;
}
/**
* Check if EC/TCPM is in an alternate mode or not.
*

8
src/ec/google/chromeec/ec.h
View File

@ -9,6 +9,7 @@
#include <types.h>
#include <device/device.h>
#include "ec_commands.h"
#include <device/usbc_mux.h>
/* Fill in base and size of the IO port resources used. */
void google_chromeec_ioport_range(uint16_t *base, size_t *size);
@ -48,6 +49,13 @@ int google_chromeec_wait_for_dp_hpd(int port, long timeout_ms);
* specified port.
* Return: 0 on success, -1 on error */
int google_chromeec_typec_control_enter_dp_mode(int port);
/*
* Obtain any USB-C mux data needed for the specified port
* in: int port physical port number of the type-c port
* out: struct usbc_mux_info mux_info stores USB-C mux data
* Return: 0 on success, -1 on error
*/
int google_chromeec_get_usbc_mux_info(int port, struct usbc_mux_info *mux_info);
/* Device events */
uint64_t google_chromeec_get_device_enabled_events(void);