[src/trunk]: src/sys/dev/acpi thinkpad(4): Fix evaluation of MHKA on version ...

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a1c5ec7dba50
branches:  trunk
changeset: 983618:a1c5ec7dba50
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Sun May 30 11:24:10 2021 +0000

description:
thinkpad(4): Fix evaluation of MHKA on version 2 devices.

Need to pass an argument.

diffstat:

 sys/dev/acpi/thinkpad_acpi.c |  56 ++++++++++++++++++++++++++++++++++++++++---
 1 files changed, 51 insertions(+), 5 deletions(-)

diffs (88 lines):

diff -r 022a1821d002 -r a1c5ec7dba50 sys/dev/acpi/thinkpad_acpi.c
--- a/sys/dev/acpi/thinkpad_acpi.c      Sun May 30 11:24:02 2021 +0000
+++ b/sys/dev/acpi/thinkpad_acpi.c      Sun May 30 11:24:10 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: thinkpad_acpi.c,v 1.52 2021/05/29 16:49:57 riastradh Exp $ */
+/* $NetBSD: thinkpad_acpi.c,v 1.53 2021/05/30 11:24:10 riastradh Exp $ */
 
 /*-
  * Copyright (c) 2007 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: thinkpad_acpi.c,v 1.52 2021/05/29 16:49:57 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: thinkpad_acpi.c,v 1.53 2021/05/30 11:24:10 riastradh Exp $");
 
 #include <sys/param.h>
 #include <sys/device.h>
@@ -55,6 +55,7 @@
        struct acpi_devnode     *sc_node;
        ACPI_HANDLE             sc_powhdl;
        ACPI_HANDLE             sc_cmoshdl;
+       ACPI_INTEGER            sc_ver;
 
 #define        TP_PSW_SLEEP            0       /* FnF4 */
 #define        TP_PSW_HIBERNATE        1       /* FnF12 */
@@ -241,13 +242,58 @@
                aprint_debug_dev(self, "using EC at %s\n",
                    device_xname(sc->sc_ecdev));
 
-       /* Get the supported event mask */
-       rv = acpi_eval_integer(sc->sc_node->ad_handle, "MHKA", &val);
+       /* Query the version number */
+       rv = acpi_eval_integer(aa->aa_node->ad_handle, "MHKV", &sc->sc_ver);
        if (ACPI_FAILURE(rv)) {
-               aprint_error_dev(self, "couldn't evaluate MHKA: %s\n",
+               aprint_error_dev(self, "couldn't evaluate MHKV: %s\n",
                    AcpiFormatException(rv));
                goto fail;
        }
+       aprint_normal_dev(self, "version %04x\n", (unsigned)sc->sc_ver);
+
+       /* Get the supported event mask */
+       switch (sc->sc_ver) {
+       case THINKPAD_HKEY_VERSION_1:
+               rv = acpi_eval_integer(sc->sc_node->ad_handle, "MHKA", &val);
+               if (ACPI_FAILURE(rv)) {
+                       aprint_error_dev(self, "couldn't evaluate MHKA: %s\n",
+                           AcpiFormatException(rv));
+                       goto fail;
+               }
+               break;
+       case THINKPAD_HKEY_VERSION_2: {
+               ACPI_OBJECT args[1] = {
+                       [0] = { .Integer = {
+                               .Type = ACPI_TYPE_INTEGER,
+                               .Value = 1, /* hotkey events */
+                       } },
+               };
+               ACPI_OBJECT_LIST arglist = {
+                       .Count = __arraycount(args),
+                       .Pointer = args,
+               };
+               ACPI_OBJECT ret;
+               ACPI_BUFFER buf = { .Pointer = &ret, .Length = sizeof(ret) };
+
+               rv = AcpiEvaluateObject(sc->sc_node->ad_handle, "MHKA",
+                   &arglist, &buf);
+               if (ACPI_FAILURE(rv)) {
+                       aprint_error_dev(self, "couldn't evaluate MHKA(1):"
+                           " %s\n",
+                           AcpiFormatException(rv));
+                       goto fail;
+               }
+               if (buf.Length == 0 || ret.Type != ACPI_TYPE_INTEGER) {
+                       aprint_error_dev(self, "failed to evaluate MHKA(1)\n");
+                       goto fail;
+               }
+               val = ret.Integer.Value;
+               break;
+       }
+       default:
+               panic("%s: invalid version %jd", device_xname(self),
+                   (intmax_t)sc->sc_ver);
+       }
 
        /* Enable all supported events */
        rv = thinkpad_mask_init(sc, val);