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driver/intel/pmc_mux/conn: Add type-c port info to cbmem 

This change adds type-c port information for USB type-c ports to cbmem.

BUG=b:149830546
TEST='emerge-volteer coreboot chromeos-bootimage', flash and boot
volteer2 to kernel, log in and check cbmem for type-c info exported to
the payload:
  localhost ~ # cbmem -c | grep type-c
  added type-c port0 info to cbmem: usb2:9 usb3:1 sbu:0 data:0
  added type-c port1 info to cbmem: usb2:4 usb3:2 sbu:1 data:0

Change-Id: Ic56a1ad1b617e3af000664147d21165e6ea3a742
Signed-off-by: Nick Vaccaro <nvaccaro@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57345
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Nick Vaccaro 2021-10-01 16:17:42 -07:00
parent 2970f45fe6
commit d4c55353e0
1 changed files with 64 additions and 0 deletions
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64
src/drivers/intel/pmc_mux/conn/conn.c
View File

@ -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)