Input: synaptics - gate forcepad support by DMI check

[karo-tx-linux.git] / drivers / input / mouse / synaptics.c

diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 6394d9b5bfd35526e7f093543cfab67fcf6ec0e2..9031a0a28ea4f2cf0c086036334e975a3fdbdf35 100644 (file)
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -607,6 +607,8 @@ static void synaptics_parse_agm(const unsigned char buf[],
        priv->agm_pending = true;
 }
 
+static bool is_forcepad;
+
 static int synaptics_parse_hw_state(const unsigned char buf[],
                                    struct synaptics_data *priv,
                                    struct synaptics_hw_state *hw)
@@ -636,7 +638,7 @@ static int synaptics_parse_hw_state(const unsigned char buf[],
                hw->left  = (buf[0] & 0x01) ? 1 : 0;
                hw->right = (buf[0] & 0x02) ? 1 : 0;
 
-               if (SYN_CAP_FORCEPAD(priv->ext_cap_0c)) {
+               if (is_forcepad) {
                        /*
                         * ForcePads, like Clickpads, use middle button
                         * bits to report primary button clicks.
@@ -1667,11 +1669,29 @@ static const struct dmi_system_id __initconst cr48_dmi_table[] = {
        { }
 };
 
+static const struct dmi_system_id forcepad_dmi_table[] __initconst = {
+#if defined(CONFIG_DMI) && defined(CONFIG_X86)
+       {
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "HP EliteBook Folio 1040 G1"),
+               },
+       },
+#endif
+       { }
+};
+
 void __init synaptics_module_init(void)
 {
        impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
        broken_olpc_ec = dmi_check_system(olpc_dmi_table);
        cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
+
+       /*
+        * Unfortunately ForcePad capability is not exported over PS/2,
+        * so we have to resort to checking DMI.
+        */
+       is_forcepad = dmi_check_system(forcepad_dmi_table);
 }
 
 static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)