diff options
Diffstat (limited to 'src/drivers/intel/usb4/retimer')
| -rw-r--r-- | src/drivers/intel/usb4/retimer/retimer.c | 28 | ||||
| -rw-r--r-- | src/drivers/intel/usb4/retimer/retimer.h | 10 |
2 files changed, 36 insertions, 2 deletions
diff --git a/src/drivers/intel/usb4/retimer/retimer.c b/src/drivers/intel/usb4/retimer/retimer.c index e54952598c..8a20ebe68a 100644 --- a/src/drivers/intel/usb4/retimer/retimer.c +++ b/src/drivers/intel/usb4/retimer/retimer.c @@ -341,6 +341,7 @@ static void usb4_retimer_fill_ssdt(const struct device *dev) static char dfp[DEVICE_PATH_MAX]; struct acpi_pld pld; uint8_t dfp_port, usb_port; + int ec_port = 0; usb4_retimer_scope = acpi_device_scope(dev); if (!usb4_retimer_scope || !config) @@ -365,8 +366,14 @@ static void usb4_retimer_fill_ssdt(const struct device *dev) usb_device = config->dfp[dfp_port].typec_port; usb_port = usb_device->path.usb.port_id; + ec_port = retimer_get_index_for_typec(usb_port); + if (ec_port == -1) { + printk(BIOS_ERR, "%s: No relative EC port found for TC port %d\n", + __func__, usb_port); + continue; + } /* DFPx */ - snprintf(dfp, sizeof(dfp), "DFP%1d", usb_port); + snprintf(dfp, sizeof(dfp), "DFP%1d", ec_port); acpigen_write_device(dfp); /* _ADR part is for the lane adapter */ acpigen_write_ADR(dfp_port*2 + 1); @@ -396,7 +403,7 @@ static void usb4_retimer_fill_ssdt(const struct device *dev) /* Return (Buffer (One) { 0x0 }) */ acpigen_write_return_singleton_buffer(0x0); acpigen_pop_len(); - usb4_retimer_write_dsm(usb_port, INTEL_USB4_RETIMER_DSM_UUID, + usb4_retimer_write_dsm(ec_port, INTEL_USB4_RETIMER_DSM_UUID, usb4_retimer_callbacks, ARRAY_SIZE(usb4_retimer_callbacks), (void *)&config->dfp[dfp_port].power_gpio); /* Default case: Return (Buffer (One) { 0x0 }) */ @@ -436,3 +443,20 @@ __weak const char *ec_retimer_fw_update_path(void) __weak void ec_retimer_fw_update(uint8_t data) { } + +/* + * This function will convert CPU physical port mapping to abstract + * EC port mapping. + * For example, board might have enabled TCSS port 1 and 3 as per physical + * port mapping. Since only 2 TCSS ports are enabled EC will index it as port 0 + * and port 1. So there will be an issue when coreboot sends command to EC for + * port 3 (with coreboot index of 2). EC will produce an error due to wrong index. + * + * Note: Each SoC code using retimer driver needs to implement this function + * since SoC will have physical port details. + */ +__weak int retimer_get_index_for_typec(uint8_t typec_port) +{ + /* By default assume that retimer port index = Type C port */ + return (int)typec_port; +} diff --git a/src/drivers/intel/usb4/retimer/retimer.h b/src/drivers/intel/usb4/retimer/retimer.h index 5a040a0d47..ff87c19618 100644 --- a/src/drivers/intel/usb4/retimer/retimer.h +++ b/src/drivers/intel/usb4/retimer/retimer.h @@ -30,5 +30,15 @@ struct usb4_retimer_dsm_uuid { const char *ec_retimer_fw_update_path(void); void ec_retimer_fw_update(uint8_t data); +/* + * This function will convert CPU physical port mapping to abstract + * EC port mapping. For example, board might have enabled TCSS port 1 + * and 3 as per physical port mapping. Since only 2 TCSS ports are enabled + * EC will name it as port 0 and port 1. So there will be mismatch when + * coreboot sends index for port 3. + * Each SoC code using retimer driver needs to implement this function + * since SoC will have physical port details. + */ +int retimer_get_index_for_typec(uint8_t typec_port); #endif /* _DRIVERS_INTEL_USB4_RETIMER_H_ */ |