i8k: Add support for Dell Latitude E6540

Add support for the Dell Latitude E6540 which needs a different fan speed multiplier.
Signed-off-by: Steven Honeyman <stevenhoneyman@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/char/i8k.c

@@ -651,6 +651,7 @@ struct i8k_config_data {
 
 enum i8k_configs {
 	DELL_LATITUDE_D520,
+	DELL_LATITUDE_E6540,
 	DELL_PRECISION_490,
 	DELL_STUDIO,
 	DELL_XPS_M140,
@@ -661,6 +662,10 @@ static const struct i8k_config_data i8k_config_data[] = {
 		.fan_mult = 1,
 		.fan_max = I8K_FAN_TURBO,
 	},
+	[DELL_LATITUDE_E6540] = {
+		.fan_mult = 1,
+		.fan_max = I8K_FAN_HIGH,
+	},
 	[DELL_PRECISION_490] = {
 		.fan_mult = 1,
 		.fan_max = I8K_FAN_TURBO,
@@ -705,6 +710,14 @@ static struct dmi_system_id i8k_dmi_table[] __initdata = {
 		},
 		.driver_data = (void *)&i8k_config_data[DELL_LATITUDE_D520],
 	},
+	{
+		.ident = "Dell Latitude E6540",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Latitude E6540"),
+		},
+		.driver_data = (void *)&i8k_config_data[DELL_LATITUDE_E6540],
+	},
 	{
 		.ident = "Dell Latitude 2",
 		.matches = {