[PATCH] hp-wmi: Add support for SMBus hotkeys

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Several models of HP laptops using the same DSDT have hotkey buttons
that do not work until the EC is configured to enable them.
---
 drivers/platform/x86/hp-wmi.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
index 1dde7ac..67e4c19 100644
--- a/drivers/platform/x86/hp-wmi.c
+++ b/drivers/platform/x86/hp-wmi.c
@@ -137,6 +137,7 @@ 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 }
 };
@@ -884,6 +885,9 @@ static int __init hp_wmi_init(void)
 		err = hp_wmi_input_setup();
 		if (err)
 			return err;
+
+		//Enable magic for hotkeys that run on the SMBus
+		ec_write(0xe6,0x6e);
 	}
 
 	if (bios_capable) {
-- 
1.7.3.4

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