From 6c4edff487d365d40fbd6fb0eb3332492a947ada Mon Sep 17 00:00:00 2001 From: jzhao80 Date: Mon, 10 Jan 2022 07:54:57 -0800 Subject: soc/intel/tigerlake: Implement function to map physical port to EC port Currently coreboot and EC had different logic to interpret TCSS port number which would break retimer update functionality since coreboot would pass wrong port information to EC. This change clones the implementation on Alder Lake which converts the phyiscal port mapping to EC's abstract port mapping. BUG=b:207057940 BRANCH=None Signed-off-by: John Zhao Change-Id: If4451598dbb83528ae6d88dbc1b65c206f24fe1f Reviewed-on: https://review.coreboot.org/c/coreboot/+/60972 Tested-by: build bot (Jenkins) Reviewed-by: Tim Wawrzynczak --- src/soc/intel/tigerlake/Makefile.inc | 1 + src/soc/intel/tigerlake/retimer.c | 32 ++++++++++++++++++++++++++++++++ 2 files changed, 33 insertions(+) create mode 100644 src/soc/intel/tigerlake/retimer.c (limited to 'src/soc/intel/tigerlake') diff --git a/src/soc/intel/tigerlake/Makefile.inc b/src/soc/intel/tigerlake/Makefile.inc index 25a1d65410..0b616bee3c 100644 --- a/src/soc/intel/tigerlake/Makefile.inc +++ b/src/soc/intel/tigerlake/Makefile.inc @@ -37,6 +37,7 @@ ramstage-y += p2sb.c ramstage-y += pcie_rp.c ramstage-y += pmc.c ramstage-y += reset.c +ramstage-y += retimer.c ramstage-y += soundwire.c ramstage-y += systemagent.c ramstage-y += xhci.c diff --git a/src/soc/intel/tigerlake/retimer.c b/src/soc/intel/tigerlake/retimer.c new file mode 100644 index 0000000000..09bf112160 --- /dev/null +++ b/src/soc/intel/tigerlake/retimer.c @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#include +#include +#include +#include + +int retimer_get_index_for_typec(uint8_t typec_port) +{ + int ec_port = 0; + + const struct device *tcss_port_arr[] = { + DEV_PTR(tcss_usb3_port1), + DEV_PTR(tcss_usb3_port2), + DEV_PTR(tcss_usb3_port3), + DEV_PTR(tcss_usb3_port4), + }; + + for (uint8_t i = 0; i < MAX_TYPE_C_PORTS; i++) { + if (i == typec_port) { + printk(BIOS_ERR, "USB Type-C %d mapped to EC port %d\n", typec_port, + ec_port); + return ec_port; + } + + if (is_dev_enabled(tcss_port_arr[i])) + ec_port++; + } + + // Code should not come here if typec_port input is correct + return -1; +} -- cgit v1.2.3