diff options
| author | Kyle Evans <kvans32@gmail.com> | 2014-06-09 19:26:06 +0200 |
|---|---|---|
| committer | Matthew Garrett <matthew.garrett@nebula.com> | 2014-06-11 01:11:11 +0200 |
| commit | f82bdd0d77b6bf0dea08a1d957ab45d503f328b1 (patch) | |
| tree | ab33c3ed9fb0f8747d5682a702399acadaba21e8 /drivers/platform | |
| parent | thinkpad_acpi: Add mappings for F9 - F12 hotkeys on X240 / T440 / T540 (diff) | |
| download | linux-f82bdd0d77b6bf0dea08a1d957ab45d503f328b1.tar.xz linux-f82bdd0d77b6bf0dea08a1d957ab45d503f328b1.zip | |
hp-wmi: Enable hotkeys on some systems
This is a third attempt to enable these buttons. The new variable being
commit 997daa1bd9aca412ab97955a35b26c460c0ec7a4 (i.e. hp-wmi: detect
"2009 BIOS or later"). Older systems that do not have the 2009 BIOS query
method respond with a dummy value, in this case 4. Using that, we can
target a fairly narrow group of systems. i.e. old enough to not have
HPWMI_FEATURE_QUERY 0xd, but new enough to have HPWMI_BIOS_QUERY 0x9.
This group may be further limited if some systems respond with something
other than 4 to non-existant feature queries.
Signed-off-by: Kyle Evans <kvans32@gmail.com>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/hp-wmi.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c index 8ba8956b5a48..484a8673b835 100644 --- a/drivers/platform/x86/hp-wmi.c +++ b/drivers/platform/x86/hp-wmi.c @@ -53,6 +53,7 @@ MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4"); #define HPWMI_ALS_QUERY 0x3 #define HPWMI_HARDWARE_QUERY 0x4 #define HPWMI_WIRELESS_QUERY 0x5 +#define HPWMI_BIOS_QUERY 0x9 #define HPWMI_HOTKEY_QUERY 0xc #define HPWMI_FEATURE_QUERY 0xd #define HPWMI_WIRELESS2_QUERY 0x1b @@ -144,6 +145,7 @@ static const struct key_entry hp_wmi_keymap[] = { { KE_KEY, 0x2142, { KEY_MEDIA } }, { KE_KEY, 0x213b, { KEY_INFO } }, { KE_KEY, 0x2169, { KEY_DIRECTION } }, + { KE_KEY, 0x216a, { KEY_SETUP } }, { KE_KEY, 0x231b, { KEY_HELP } }, { KE_END, 0 } }; @@ -304,6 +306,19 @@ static int hp_wmi_bios_2009_later(void) return (state & 0x10) ? 1 : 0; } +static int hp_wmi_enable_hotkeys(void) +{ + int ret; + int query = 0x6e; + + ret = hp_wmi_perform_query(HPWMI_BIOS_QUERY, 1, &query, sizeof(query), + 0); + + if (ret) + return -EINVAL; + return 0; +} + static int hp_wmi_set_block(void *data, bool blocked) { enum hp_wmi_radio r = (enum hp_wmi_radio) data; @@ -648,6 +663,9 @@ static int __init hp_wmi_input_setup(void) hp_wmi_tablet_state()); input_sync(hp_wmi_input_dev); + if (hp_wmi_bios_2009_later() == 4) + hp_wmi_enable_hotkeys(); + status = wmi_install_notify_handler(HPWMI_EVENT_GUID, hp_wmi_notify, NULL); if (ACPI_FAILURE(status)) { err = -EIO; |