Author: wulf
Date: Sat Oct 31 20:25:55 2020
New Revision: 367233
URL: https://svnweb.freebsd.org/changeset/base/367233
Log:
acpi_video(4): Add evdev support for reporting of video events.
Modified:
head/sys/dev/acpica/acpi_video.c
Modified: head/sys/dev/acpica/acpi_video.c
==============================================================================
--- head/sys/dev/acpica/acpi_video.c Sat Oct 31 20:14:28 2020
(r367232)
+++ head/sys/dev/acpica/acpi_video.c Sat Oct 31 20:25:55 2020
(r367233)
@@ -29,6 +29,8 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
+#include "opt_evdev.h"
+
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/eventhandler.h>
@@ -43,6 +45,11 @@ __FBSDID("$FreeBSD$");
#include <dev/acpica/acpivar.h>
+#ifdef EVDEV_SUPPORT
+#include <dev/evdev/input.h>
+#include <dev/evdev/evdev.h>
+#endif
+
/* ACPI video extension driver. */
struct acpi_video_output {
ACPI_HANDLE handle;
@@ -61,6 +68,9 @@ struct acpi_video_output {
int *vo_levels;
struct sysctl_ctx_list vo_sysctl_ctx;
struct sysctl_oid *vo_sysctl_tree;
+#ifdef EVDEV_SUPPORT
+ struct evdev_dev *evdev;
+#endif
};
STAILQ_HEAD(acpi_video_output_queue, acpi_video_output);
@@ -70,6 +80,9 @@ struct acpi_video_softc {
ACPI_HANDLE handle;
struct acpi_video_output_queue vid_outputs;
eventhandler_tag vid_pwr_evh;
+#ifdef EVDEV_SUPPORT
+ struct evdev_dev *evdev;
+#endif
};
/* interfaces */
@@ -107,10 +120,14 @@ static void vo_set_device_state(ACPI_HANDLE,
UINT32);
/* events */
#define VID_NOTIFY_SWITCHED 0x80
#define VID_NOTIFY_REPROBE 0x81
+#define VID_NOTIFY_CYCLE_OUT 0x82
+#define VID_NOTIFY_NEXT_OUT 0x83
+#define VID_NOTIFY_PREV_OUT 0x84
#define VID_NOTIFY_CYCLE_BRN 0x85
#define VID_NOTIFY_INC_BRN 0x86
#define VID_NOTIFY_DEC_BRN 0x87
#define VID_NOTIFY_ZERO_BRN 0x88
+#define VID_NOTIFY_DISP_OFF 0x89
/* _DOS (Enable/Disable Output Switching) argument bits */
#define DOS_SWITCH_MASK 3
@@ -175,6 +192,9 @@ static devclass_t acpi_video_devclass;
DRIVER_MODULE(acpi_video, vgapci, acpi_video_driver, acpi_video_devclass,
acpi_video_modevent, NULL);
MODULE_DEPEND(acpi_video, acpi, 1, 1, 1);
+#ifdef EVDEV_SUPPORT
+MODULE_DEPEND(acpi_video, evdev, 1, 1, 1);
+#endif
static struct sysctl_ctx_list acpi_video_sysctl_ctx;
static struct sysctl_oid *acpi_video_sysctl_tree;
@@ -190,6 +210,45 @@ ACPI_SERIAL_DECL(video, "ACPI video");
ACPI_SERIAL_DECL(video_output, "ACPI video output");
static MALLOC_DEFINE(M_ACPIVIDEO, "acpivideo", "ACPI video extension");
+#ifdef EVDEV_SUPPORT
+static const struct {
+ UINT32 notify;
+ uint16_t key;
+} acpi_video_evdev_map[] = {
+ { VID_NOTIFY_SWITCHED, KEY_SWITCHVIDEOMODE },
+ { VID_NOTIFY_REPROBE, KEY_SWITCHVIDEOMODE },
+ { VID_NOTIFY_CYCLE_OUT, KEY_SWITCHVIDEOMODE },
+ { VID_NOTIFY_NEXT_OUT, KEY_VIDEO_NEXT },
+ { VID_NOTIFY_PREV_OUT, KEY_VIDEO_PREV },
+ { VID_NOTIFY_CYCLE_BRN, KEY_BRIGHTNESS_CYCLE },
+ { VID_NOTIFY_INC_BRN, KEY_BRIGHTNESSUP },
+ { VID_NOTIFY_DEC_BRN, KEY_BRIGHTNESSDOWN },
+ { VID_NOTIFY_ZERO_BRN, KEY_BRIGHTNESS_ZERO },
+ { VID_NOTIFY_DISP_OFF, KEY_DISPLAY_OFF },
+};
+
+static void
+acpi_video_push_evdev_event(struct evdev_dev *evdev, UINT32 notify)
+{
+ int i;
+ uint16_t key;
+
+ /* Do not allow to execute 2 instances this routine concurently */
+ ACPI_SERIAL_ASSERT(video_output);
+
+ for (i = 0; i < nitems(acpi_video_evdev_map); i++) {
+ if (acpi_video_evdev_map[i].notify == notify) {
+ key = acpi_video_evdev_map[i].key;
+ evdev_push_key(evdev, key, 1);
+ evdev_sync(evdev);
+ evdev_push_key(evdev, key, 0);
+ evdev_sync(evdev);
+ break;
+ }
+ }
+}
+#endif
+
static int
acpi_video_modevent(struct module *mod __unused, int evt, void *cookie
__unused)
{
@@ -247,12 +306,30 @@ acpi_video_attach(device_t dev)
{
struct acpi_softc *acpi_sc;
struct acpi_video_softc *sc;
+#ifdef EVDEV_SUPPORT
+ int i;
+#endif
sc = device_get_softc(dev);
acpi_sc = devclass_get_softc(devclass_find("acpi"), 0);
if (acpi_sc == NULL)
return (ENXIO);
+
+#ifdef EVDEV_SUPPORT
+ sc->evdev = evdev_alloc();
+ evdev_set_name(sc->evdev, device_get_desc(dev));
+ evdev_set_phys(sc->evdev, device_get_nameunit(dev));
+ evdev_set_id(sc->evdev, BUS_HOST, 0, 0, 1);
+ evdev_support_event(sc->evdev, EV_SYN);
+ evdev_support_event(sc->evdev, EV_KEY);
+ for (i = 0; i < nitems(acpi_video_evdev_map); i++)
+ evdev_support_key(sc->evdev, acpi_video_evdev_map[i].key);
+
+ if (evdev_register(sc->evdev) != 0)
+ return (ENXIO);
+#endif
+
ACPI_SERIAL_BEGIN(video);
if (acpi_video_sysctl_tree == NULL) {
acpi_video_sysctl_tree = SYSCTL_ADD_NODE(&acpi_video_sysctl_ctx,
@@ -306,6 +383,10 @@ acpi_video_detach(device_t dev)
}
ACPI_SERIAL_END(video);
+#ifdef EVDEV_SUPPORT
+ evdev_free(sc->evdev);
+#endif
+
return (0);
}
@@ -404,12 +485,21 @@ acpi_video_notify_handler(ACPI_HANDLE handle, UINT32 n
}
ACPI_SERIAL_END(video);
break;
+ /* Next events should not appear if DOS_SWITCH_BY_OSPM policy is set */
+ case VID_NOTIFY_CYCLE_OUT:
+ case VID_NOTIFY_NEXT_OUT:
+ case VID_NOTIFY_PREV_OUT:
default:
device_printf(sc->device, "unknown notify event 0x%x\n",
notify);
}
AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_video_invoke_event_handler,
(void *)(uintptr_t)notify);
+#ifdef EVDEV_SUPPORT
+ ACPI_SERIAL_BEGIN(video_output);
+ acpi_video_push_evdev_event(sc->evdev, notify);
+ ACPI_SERIAL_END(video_output);
+#endif
}
static void
@@ -454,6 +544,9 @@ acpi_video_bind_outputs_subr(ACPI_HANDLE handle, UINT3
}
vo = acpi_video_vo_init(adr);
if (vo != NULL) {
+#ifdef EVDEV_SUPPORT
+ vo->evdev = sc->evdev;
+#endif
acpi_video_vo_bind(vo, handle);
STAILQ_INSERT_TAIL(&sc->vid_outputs, vo, vo_next);
}
@@ -708,6 +801,7 @@ acpi_video_vo_notify_handler(ACPI_HANDLE handle, UINT3
case VID_NOTIFY_INC_BRN:
case VID_NOTIFY_DEC_BRN:
case VID_NOTIFY_ZERO_BRN:
+ case VID_NOTIFY_DISP_OFF:
if (vo->vo_levels == NULL)
goto out;
level = vo_get_brightness(vo);
@@ -757,6 +851,9 @@ acpi_video_vo_notify_handler(ACPI_HANDLE handle, UINT3
vo_set_brightness(vo, new_level);
vo->vo_brightness = new_level;
}
+#ifdef EVDEV_SUPPORT
+ acpi_video_push_evdev_event(vo->evdev, notify);
+#endif
out:
ACPI_SERIAL_END(video_output);
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