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path: root/drivers/platform/x86/dell-wmi.c
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Diffstat (limited to 'drivers/platform/x86/dell-wmi.c')
-rw-r--r--drivers/platform/x86/dell-wmi.c71
1 files changed, 64 insertions, 7 deletions
diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c
index 32808a463325..e38258a82be5 100644
--- a/drivers/platform/x86/dell-wmi.c
+++ b/drivers/platform/x86/dell-wmi.c
@@ -169,6 +169,30 @@ static const u16 bios_to_linux_keycode[256] __initconst = {
[255] = KEY_PROG3,
};
+/*
+ * These are applied if the 0xB2 DMI hotkey table is present and doesn't
+ * override them.
+ */
+static const struct key_entry dell_wmi_extra_keymap[] __initconst = {
+ /* Fn-lock */
+ { KE_IGNORE, 0x151, { KEY_RESERVED } },
+
+ /* Change keyboard illumination */
+ { KE_IGNORE, 0x152, { KEY_KBDILLUMTOGGLE } },
+
+ /*
+ * Radio disable (notify only -- there is no model for which the
+ * WMI event is supposed to trigger an action).
+ */
+ { KE_IGNORE, 0x153, { KEY_RFKILL } },
+
+ /* RGB keyboard backlight control */
+ { KE_IGNORE, 0x154, { KEY_RESERVED } },
+
+ /* Stealth mode toggle */
+ { KE_IGNORE, 0x155, { KEY_RESERVED } },
+};
+
static struct input_dev *dell_wmi_input_dev;
static void dell_wmi_process_key(int reported_key)
@@ -340,13 +364,27 @@ static void dell_wmi_notify(u32 value, void *context)
kfree(obj);
}
+static bool have_scancode(u32 scancode, const struct key_entry *keymap, int len)
+{
+ int i;
+
+ for (i = 0; i < len; i++)
+ if (keymap[i].code == scancode)
+ return true;
+
+ return false;
+}
+
static void __init handle_dmi_entry(const struct dmi_header *dm,
+
void *opaque)
+
{
struct dell_dmi_results *results = opaque;
struct dell_bios_hotkey_table *table;
+ int hotkey_num, i, pos = 0;
struct key_entry *keymap;
- int hotkey_num, i;
+ int num_bios_keys;
if (results->err || results->keymap)
return; /* We already found the hotkey table. */
@@ -370,7 +408,8 @@ static void __init handle_dmi_entry(const struct dmi_header *dm,
return;
}
- keymap = kcalloc(hotkey_num + 1, sizeof(struct key_entry), GFP_KERNEL);
+ keymap = kcalloc(hotkey_num + ARRAY_SIZE(dell_wmi_extra_keymap) + 1,
+ sizeof(struct key_entry), GFP_KERNEL);
if (!keymap) {
results->err = -ENOMEM;
return;
@@ -398,14 +437,32 @@ static void __init handle_dmi_entry(const struct dmi_header *dm,
}
if (keycode == KEY_KBDILLUMTOGGLE)
- keymap[i].type = KE_IGNORE;
+ keymap[pos].type = KE_IGNORE;
else
- keymap[i].type = KE_KEY;
- keymap[i].code = bios_entry->scancode;
- keymap[i].keycode = keycode;
+ keymap[pos].type = KE_KEY;
+ keymap[pos].code = bios_entry->scancode;
+ keymap[pos].keycode = keycode;
+
+ pos++;
+ }
+
+ num_bios_keys = pos;
+
+ for (i = 0; i < ARRAY_SIZE(dell_wmi_extra_keymap); i++) {
+ const struct key_entry *entry = &dell_wmi_extra_keymap[i];
+
+ /*
+ * Check if we've already found this scancode. This takes
+ * quadratic time, but it doesn't matter unless the list
+ * of extra keys gets very long.
+ */
+ if (!have_scancode(entry->code, keymap, num_bios_keys)) {
+ keymap[pos] = *entry;
+ pos++;
+ }
}
- keymap[hotkey_num].type = KE_END;
+ keymap[pos].type = KE_END;
results->keymap = keymap;
}