Input: i8042 - add Dritek keyboard extension quirk
Carlos Corbacho [Mon, 21 Jan 2008 06:04:40 +0000 (01:04 -0500)]
Some Wistron based laptops need us to explicitly enable the 'Dritek
keyboard extension' to make their extra keys start generating scancodes.
Originally, this was just confined to older laptops, but a few Acer
laptops have turned up in 2007 that also need this again.

Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/serio/i8042-x86ia64io.h
drivers/input/serio/i8042.c

index c5e68dc..4f6384d 100644 (file)
@@ -277,6 +277,50 @@ static struct dmi_system_id __initdata i8042_dmi_nomux_table[] = {
 
 #endif
 
+#ifdef CONFIG_X86
+
+#include <linux/dmi.h>
+
+/*
+ * Some Wistron based laptops need us to explicitly enable the 'Dritek
+ * keyboard extension' to make their extra keys start generating scancodes.
+ * Originally, this was just confined to older laptops, but a few Acer laptops
+ * have turned up in 2007 that also need this again.
+ */
+static struct dmi_system_id __initdata i8042_dmi_dritek_table[] = {
+       {
+               .ident = "Acer Aspire 5630",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
+               },
+       },
+       {
+               .ident = "Acer Aspire 5650",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
+               },
+       },
+       {
+               .ident = "Acer Aspire 5680",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
+               },
+       },
+       {
+               .ident = "Acer TravelMate 2490",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
+               },
+       },
+       { }
+};
+
+#endif /* CONFIG_X86 */
+
 
 #ifdef CONFIG_PNP
 #include <linux/pnp.h>
@@ -520,6 +564,11 @@ static int __init i8042_platform_init(void)
                i8042_nomux = 1;
 #endif
 
+#ifdef CONFIG_X86
+       if (dmi_check_system(i8042_dmi_dritek_table))
+               i8042_dritek = 1;
+#endif /* CONFIG_X86 */
+
        return retval;
 }
 
index cbe83bf..1f73cf7 100644 (file)
@@ -63,6 +63,12 @@ static unsigned int i8042_blink_frequency = 500;
 module_param_named(panicblink, i8042_blink_frequency, uint, 0600);
 MODULE_PARM_DESC(panicblink, "Frequency with which keyboard LEDs should blink when kernel panics");
 
+#ifdef CONFIG_X86
+static unsigned int i8042_dritek;
+module_param_named(dritek, i8042_dritek, bool, 0);
+MODULE_PARM_DESC(dritek, "Force enable the Dritek keyboard extension");
+#endif
+
 #ifdef CONFIG_PNP
 static int i8042_nopnp;
 module_param_named(nopnp, i8042_nopnp, bool, 0);
@@ -1145,6 +1151,7 @@ static int __devinit i8042_setup_kbd(void)
 static int __devinit i8042_probe(struct platform_device *dev)
 {
        int error;
+       char param;
 
        error = i8042_controller_selftest();
        if (error)
@@ -1166,6 +1173,13 @@ static int __devinit i8042_probe(struct platform_device *dev)
                        goto out_fail;
        }
 
+       if (i8042_dritek) {
+               param = 0x90;
+               error = i8042_command(&param, 0x1059);
+               if (error)
+                       goto out_fail;
+       }
+
 /*
  * Ok, everything is ready, let's register all serio ports
  */