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ec/google/wilco: Fix extended event handling 

Extended events will be handled by the OS kernel driver, but that
driver needs a method exposed by ACPI to read the event data from
the EC and into a buffer.

Tested by generating a hotkey event and reading the buffer from
the Linux kernel driver with acpi_evaluate_object().

Change-Id: Ic8510e38d777a5dd31a5237867313efefeb2b48e
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: https://review.coreboot.org/c/29674
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Duncan Laurie 2018-11-17 12:18:20 -07:00 committed by Patrick Georgi
parent 57f22f6ffe
commit 45b8465602
2 changed files with 24 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/ec/google/wilco/acpi/ec_ram.asl
View File

@ -67,7 +67,7 @@ Name (E1SS, Package () { 0x07, 0x80, RD }) /* SMI-SCI */
Name (EVT2, Package () { 0x08, 0xff, RD }) /* Event 2 */
Name (E2BS, Package () { 0x08, 0x02, RD }) /* BSS */
Name (E2OR, Package () { 0x08, 0x04, RD }) /* Orientation */
Name (E2QS, Package () { 0x08, 0x08, RD }) /* Quickset */
Name (E2QS, Package () { 0x08, 0x08, RD }) /* QS Event */
Name (E2PN, Package () { 0x08, 0x20, RD }) /* Panel */
Name (E2DP, Package () { 0x08, 0x40, RD }) /* Display Port */
Name (E2VT, Package () { 0x08, 0x80, RD }) /* Video Throttle */
@ -100,8 +100,8 @@ Name (BSMN, Package () { 0x28, 0xff, RD }) /* BSTATIC: Manufacturer Name */
Name (BSDC, Package () { 0x29, 0xff, RD }) /* BSTATIC: Device Chemistry */
Name (BSBS, Package () { 0x2a, 0xff, RD }) /* BSTATIC: Battery String */
Name (QSEC, Package () { 0x2b, 0xff, RD }) /* QuickSet Event Count */
Name (QSEB, Package () { 0x2c, 0xff, RD }) /* QuickSet Event Byte */
Name (QSEC, Package () { 0x2b, 0xff, RD }) /* QS Event Count */
Name (QSEB, Package () { 0x2c, 0xff, RD }) /* QS Event Byte */
Name (ORST, Package () { 0x39, 0xff, RD }) /* Orientation State */
Name (OREV, Package () { 0x3a, 0xff, RD }) /* Orientation Events */

32
src/ec/google/wilco/acpi/event.asl
View File

@ -76,6 +76,11 @@ Method (ECQ1, 1, Serialized)
Method (ECQ2, 1, Serialized)
{
Printf ("EVT2: %o", Arg0)
If (EBIT (E2QS, Arg0)) {
Printf ("QS EVENT")
Notify (^WLCO, 0x90)
}
}
/* Handle events in PmEv3 */
@ -90,12 +95,6 @@ Method (ECQ4, 1, Serialized)
Printf ("EVT4: %o", Arg0)
}
/* Handle QuickSet events */
Method (ECQS, 1, Serialized)
{
Printf ("QS EVENT %o", Arg0)
}
/* Process all events */
Method (_Q66, 0, Serialized)
{
@ -118,9 +117,20 @@ Method (_Q66, 0, Serialized)
If (Local0) {
ECQ4 (Local0)
}
Local0 = R (QSEC)
For (Local1 = 0, Local1 < Local0, Local1++) {
ECQS (R (QSEB))
}
}
/* Get Event Buffer */
Method (QSET, 0, Serialized)
{
/* Get count of event bytes */
Local0 = R (QSEC)
Name (QBUF, Buffer (Local0) {})
/* Fill QS event buffer with Local0 bytes */
For (Local1 = 0, Local1 < Local0, Local1++) {
QBUF[Local1] = R (QSEB)
}
Printf ("QS = %o", QBUF)
Return (QBUF)
}