diff options
Diffstat (limited to 'src/drivers/intel/pmc_mux')
| -rw-r--r-- | src/drivers/intel/pmc_mux/conn/conn.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/drivers/intel/pmc_mux/conn/conn.c b/src/drivers/intel/pmc_mux/conn/conn.c index 7a622c840e..caff166392 100644 --- a/src/drivers/intel/pmc_mux/conn/conn.c +++ b/src/drivers/intel/pmc_mux/conn/conn.c @@ -2,11 +2,73 @@ #include <acpi/acpigen.h> #include <boot/coreboot_tables.h> +#include <cbmem.h> #include <console/console.h> #include <intelblocks/acpi.h> #include "chip.h" +/* Number of registered connectors */ +static size_t total_conn_count; + +static void conn_init(struct device *dev) +{ + total_conn_count++; +} + +static struct type_c_info *conn_get_cbmem_buffer(void) +{ + struct type_c_info *info; + size_t size; + + info = cbmem_find(CBMEM_ID_TYPE_C_INFO); + if (info) + return info; + + size = sizeof(struct type_c_info) + total_conn_count * sizeof(struct type_c_port_info); + info = cbmem_add(CBMEM_ID_TYPE_C_INFO, size); + + if (!info) + return NULL; + + memset(info, 0, size); + return info; +} + +static void conn_write_cbmem_entry(struct device *dev) +{ + const struct drivers_intel_pmc_mux_conn_config *config = dev->chip_info; + struct type_c_port_info *port_info; + struct type_c_info *info; + size_t count; + + /* + * Do not re-run this code on resume as the cbmem data is populated on boot-up + * (non-S3 path) and stays intact across S3 suspend/resume. + */ + if (acpi_is_wakeup_s3()) + return; + + info = conn_get_cbmem_buffer(); + if (!info || (info->port_count >= total_conn_count)) { + printk(BIOS_ERR, "ERROR: No space for Type-C port info!\n"); + return; + } + + count = info->port_count; + port_info = &info->port_info[count]; + port_info->usb2_port_number = config->usb2_port_number; + port_info->usb3_port_number = config->usb3_port_number; + port_info->sbu_orientation = config->sbu_orientation; + port_info->data_orientation = config->hsl_orientation; + + printk(BIOS_INFO, "added type-c port%ld info to cbmem: usb2:%d usb3:%d sbu:%d data:%d\n", + count, port_info->usb2_port_number, port_info->usb3_port_number, + port_info->sbu_orientation, port_info->data_orientation); + + info->port_count++; +} + static const char *conn_acpi_name(const struct device *dev) { static char name[5]; @@ -76,6 +138,8 @@ static struct device_operations conn_dev_ops = { .set_resources = noop_set_resources, .acpi_name = conn_acpi_name, .acpi_fill_ssdt = conn_fill_ssdt, + .init = conn_init, + .final = conn_write_cbmem_entry, }; static void conn_enable(struct device *dev) |