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authorLuming Yu <luming.yu@intel.com>2007-08-20 18:23:53 +0800
committerLen Brown <len.brown@intel.com>2007-08-24 22:23:46 -0400
commite9dab1960ac9746fa34eff726b81635147615a79 (patch)
treeb487a30dfcda9bd0ec6319acc799554f8e691f45 /drivers/acpi/video.c
parenta1eb96a2f635cdb8f626f4074dae2ba5a6fce1e8 (diff)
ACPI video hotkey: export missing ACPI video hotkey events via input layer
Signed-off-by: Yu Luming <luming.yu@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/video.c')
-rw-r--r--drivers/acpi/video.c89
1 files changed, 88 insertions, 1 deletions
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 8efdea587ae..d727d2c715d 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -31,7 +31,7 @@
#include <linux/list.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
-
+#include <linux/input.h>
#include <linux/backlight.h>
#include <linux/video_output.h>
#include <asm/uaccess.h>
@@ -138,6 +138,8 @@ struct acpi_video_bus {
struct semaphore sem;
struct list_head video_device_list;
struct proc_dir_entry *dir;
+ struct input_dev *input;
+ char phys[32]; /* for input device */
};
struct acpi_video_device_flags {
@@ -1764,6 +1766,9 @@ static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data)
{
struct acpi_video_bus *video = data;
struct acpi_device *device = NULL;
+ struct input_dev *input;
+ int keycode;
+
printk("video bus notify\n");
@@ -1771,11 +1776,13 @@ static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data)
return;
device = video->device;
+ input = video->input;
switch (event) {
case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch,
* most likely via hotkey. */
acpi_bus_generate_event(device, event, 0);
+ keycode = KEY_SWITCHVIDEOMODE;
break;
case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video
@@ -1784,21 +1791,37 @@ static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data)
acpi_video_device_rebind(video);
acpi_video_switch_output(video, event);
acpi_bus_generate_event(device, event, 0);
+ keycode = KEY_SWITCHVIDEOMODE;
break;
case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */
+ acpi_video_switch_output(video, event);
+ acpi_bus_generate_event(device, event, 0);
+ keycode = KEY_SWITCHVIDEOMODE;
+ break;
case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */
+ acpi_video_switch_output(video, event);
+ acpi_bus_generate_event(device, event, 0);
+ keycode = KEY_VIDEO_NEXT;
+ break;
case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */
acpi_video_switch_output(video, event);
acpi_bus_generate_event(device, event, 0);
+ keycode = KEY_VIDEO_PREV;
break;
default:
+ keycode = KEY_UNKNOWN;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Unsupported event [0x%x]\n", event));
break;
}
+ input_report_key(input, keycode, 1);
+ input_sync(input);
+ input_report_key(input, keycode, 0);
+ input_sync(input);
+
return;
}
@@ -1806,26 +1829,55 @@ static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data)
{
struct acpi_video_device *video_device = data;
struct acpi_device *device = NULL;
+ struct acpi_video_bus *bus;
+ struct input_dev *input;
+ int keycode;
if (!video_device)
return;
device = video_device->dev;
+ bus = video_device->video;
+ input = bus->input;
switch (event) {
case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */
+ acpi_video_switch_brightness(video_device, event);
+ acpi_bus_generate_event(device, event, 0);
+ keycode = KEY_BRIGHTNESS_CYCLE;
+ break;
case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */
+ acpi_video_switch_brightness(video_device, event);
+ acpi_bus_generate_event(device, event, 0);
+ keycode = KEY_BRIGHTNESSUP;
+ break;
case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */
+ acpi_video_switch_brightness(video_device, event);
+ acpi_bus_generate_event(device, event, 0);
+ keycode = KEY_BRIGHTNESSDOWN;
+ break;
case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */
+ acpi_video_switch_brightness(video_device, event);
+ acpi_bus_generate_event(device, event, 0);
+ keycode = KEY_BRIGHTNESS_ZERO;
+ break;
case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */
acpi_video_switch_brightness(video_device, event);
acpi_bus_generate_event(device, event, 0);
+ keycode = KEY_DISPLAY_OFF;
break;
default:
+ keycode = KEY_UNKNOWN;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Unsupported event [0x%x]\n", event));
break;
}
+
+ input_report_key(input, keycode, 1);
+ input_sync(input);
+ input_report_key(input, keycode, 0);
+ input_sync(input);
+
return;
}
@@ -1834,6 +1886,7 @@ static int acpi_video_bus_add(struct acpi_device *device)
int result = 0;
acpi_status status = 0;
struct acpi_video_bus *video = NULL;
+ struct input_dev *input;
if (!device)
@@ -1877,6 +1930,39 @@ static int acpi_video_bus_add(struct acpi_device *device)
goto end;
}
+
+ video->input = input = input_allocate_device();
+
+ snprintf(video->phys, sizeof(video->phys),
+ "%s/video/input0", acpi_device_hid(video->device));
+
+ input->name = acpi_device_name(video->device);
+ input->phys = video->phys;
+ input->id.bustype = BUS_HOST;
+ input->id.product = 0x06;
+ input->evbit[0] = BIT(EV_KEY);
+ set_bit(KEY_SWITCHVIDEOMODE, input->keybit);
+ set_bit(KEY_VIDEO_NEXT, input->keybit);
+ set_bit(KEY_VIDEO_PREV, input->keybit);
+ set_bit(KEY_BRIGHTNESS_CYCLE, input->keybit);
+ set_bit(KEY_BRIGHTNESSUP, input->keybit);
+ set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
+ set_bit(KEY_BRIGHTNESS_ZERO, input->keybit);
+ set_bit(KEY_DISPLAY_OFF, input->keybit);
+ set_bit(KEY_UNKNOWN, input->keybit);
+ result = input_register_device(input);
+ if (result) {
+ acpi_remove_notify_handler(video->device->handle,
+ ACPI_DEVICE_NOTIFY,
+ acpi_video_bus_notify);
+ acpi_video_bus_stop_devices(video);
+ acpi_video_bus_put_devices(video);
+ kfree(video->attached_array);
+ acpi_video_bus_remove_fs(device);
+ goto end;
+ }
+
+
printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n",
ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device),
video->flags.multihead ? "yes" : "no",
@@ -1910,6 +1996,7 @@ static int acpi_video_bus_remove(struct acpi_device *device, int type)
acpi_video_bus_put_devices(video);
acpi_video_bus_remove_fs(device);
+ input_unregister_device(video->input);
kfree(video->attached_array);
kfree(video);