From: John Hughes Date: Thu, 8 Dec 2011 04:32:11 +0000 (+1100) Subject: drivers/platform/x86/sony-laptop.c: fix scancodes X-Git-Tag: next-20111214~2^2~198 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3636a9384ffde299bfa0e87d7fd6a83ff251ce19;p=karo-tx-linux.git drivers/platform/x86/sony-laptop.c: fix scancodes The scancodes returned by the sony-laptop driver for function keys did not match the scancodes used to remap keys. Also, since the scancode was sent to the input subsystem after the mapped keysym the /lib/udev/keymap utility was confused about which scancode to report for which keysym. This patch fixes the driver so the correct scancode is shown for each key. It also adds to the documentation a description of where to find the scancodes. Before the patch FN/E returned scancode 0x1B, but to remap scancode 0x14 had to be used. Signed-off-by: John Hughes Cc: Mattia Dongili Cc: Matthew Garrett Acked-by: Dmitry Torokhov Signed-off-by: Andrew Morton --- diff --git a/Documentation/laptops/sony-laptop.txt b/Documentation/laptops/sony-laptop.txt index 2bd4e82e5d9f..0d5ac7f5287e 100644 --- a/Documentation/laptops/sony-laptop.txt +++ b/Documentation/laptops/sony-laptop.txt @@ -17,6 +17,11 @@ subsystem. See the logs of acpid or /proc/acpi/event and devices are created by the driver. Additionally, loading the driver with the debug option will report all events in the kernel log. +The "scancodes" passed to the input system (that can be remapped with udev) +are indexes to the table "sony_laptop_input_keycode_map" in the sony-laptop.c +module. For example the "FN/E" key combination (EJECTCD on some models) +generates the scancode 20 (0x14). + Backlight control: ------------------ If your laptop model supports it, you will find sysfs files in the diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c index c006dee5ebfe..9ba4a2bea924 100644 --- a/drivers/platform/x86/sony-laptop.c +++ b/drivers/platform/x86/sony-laptop.c @@ -347,6 +347,7 @@ static void sony_laptop_report_input_event(u8 event) struct input_dev *jog_dev = sony_laptop_input.jog_dev; struct input_dev *key_dev = sony_laptop_input.key_dev; struct sony_laptop_keypress kp = { NULL }; + int scancode; if (event == SONYPI_EVENT_FNKEY_RELEASED || event == SONYPI_EVENT_ANYBUTTON_RELEASED) { @@ -380,8 +381,8 @@ static void sony_laptop_report_input_event(u8 event) dprintk("sony_laptop_report_input_event, event not known: %d\n", event); break; } - if (sony_laptop_input_index[event] != -1) { - kp.key = sony_laptop_input_keycode_map[sony_laptop_input_index[event]]; + if ((scancode = sony_laptop_input_index[event]) != -1) { + kp.key = sony_laptop_input_keycode_map[scancode]; if (kp.key != KEY_UNKNOWN) kp.dev = key_dev; } @@ -389,9 +390,9 @@ static void sony_laptop_report_input_event(u8 event) } if (kp.dev) { - input_report_key(kp.dev, kp.key, 1); /* we emit the scancode so we can always remap the key */ - input_event(kp.dev, EV_MSC, MSC_SCAN, event); + input_event(kp.dev, EV_MSC, MSC_SCAN, scancode); + input_report_key(kp.dev, kp.key, 1); input_sync(kp.dev); /* schedule key release */