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soc/intel: Add support for USB ACPI code generation

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To support generating USB devices in ACPI the platform needs to
know how to determine a device name for each USB port, and for
any root hubs that may be present.

Recent Intel platforms route all ports to an XHCI controller
through a root hub.  This is supported by considering the root
hub to be USB port type 0, the USB 2.0 ports to be type 2, and
the USB 3.0 ports to be type 3.

This was tested with a Kaby Lake platform by adding entries to
the devicetree and checking the resulting SSDT.

Change-Id: I527a63bdc64f9243fe57487363ee6d5f60be84ca
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: https://review.coreboot.org/26174
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Duncan Laurie
2018-05-07 15:33:18 -07:00
committed by Patrick Georgi
parent 4721f43390
commit bf713b04b6
5 changed files with 100 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
src/soc/intel/apollolake/chip.c
View File

@@ -34,6 +34,7 @@
#include <intelblocks/xdci.h>
#include <fsp/api.h>
#include <fsp/util.h>
#include <intelblocks/acpi.h>
#include <intelblocks/cpulib.h>
#include <intelblocks/itss.h>
#include <intelblocks/pmclib.h>
@@ -50,11 +51,44 @@
#include "chip.h"
static const char *soc_acpi_name(const struct device *dev)
const char *soc_acpi_name(const struct device *dev)
{
if (dev->path.type == DEVICE_PATH_DOMAIN)
return "PCI0";
if (dev->path.type == DEVICE_PATH_USB) {
switch (dev->path.usb.port_type) {
case 0:
/* Root Hub */
return "RHUB";
case 2:
/* USB2 ports */
switch (dev->path.usb.port_id) {
case 0: return "HS01";
case 1: return "HS02";
case 2: return "HS03";
case 3: return "HS04";
case 4: return "HS05";
case 5: return "HS06";
case 6: return "HS07";
case 7: return "HS08";
}
break;
case 3:
/* USB3 ports */
switch (dev->path.usb.port_id) {
case 0: return "SS01";
case 1: return "SS02";
case 2: return "SS03";
case 3: return "SS04";
case 4: return "SS05";
case 5: return "SS06";
}
break;
}
return NULL;
}
if (dev->path.type != DEVICE_PATH_PCI)
return NULL;