1 files changed, 95 insertions, 2 deletions

diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index d8d49d10f9bb..ef9f4913450d 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -117,6 +117,44 @@ void synaptics_reset(struct psmouse *psmouse)
 }
 
 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
+/* This list has been kindly provided by Synaptics. */
+static const char * const topbuttonpad_pnp_ids[] = {
+        "LEN0017",
+        "LEN0018",
+        "LEN0019",
+        "LEN0023",
+        "LEN002A",
+        "LEN002B",
+        "LEN002C",
+        "LEN002D",
+        "LEN002E",
+        "LEN0033", /* Helix */
+        "LEN0034", /* T431s, T540, X1 Carbon 2nd */
+        "LEN0035", /* X240 */
+        "LEN0036", /* T440 */
+        "LEN0037",
+        "LEN0038",
+        "LEN0041",
+        "LEN0042", /* Yoga */
+        "LEN0045",
+        "LEN0046",
+        "LEN0047",
+        "LEN0048",
+        "LEN0049",
+        "LEN2000",
+        "LEN2001",
+        "LEN2002",
+        "LEN2003",
+        "LEN2004", /* L440 */
+        "LEN2005",
+        "LEN2006",
+        "LEN2007",
+        "LEN2008",
+        "LEN2009",
+        "LEN200A",
+        "LEN200B",
+        NULL
+};
 
 /*****************************************************************************
  *      Synaptics communications functions
@@ -1255,8 +1293,10 @@ static void set_abs_position_params(struct input_dev *dev,
         input_abs_set_res(dev, y_code, priv->y_res);
 }
 
-static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
+static void set_input_params(struct psmouse *psmouse,
+                             struct synaptics_data *priv)
 {
+        struct input_dev *dev = psmouse->dev;
         int i;
 
         /* Things that apply to both modes */
@@ -1325,6 +1365,17 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
 
         if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
                 __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
+                /* See if this buttonpad has a top button area */
+                if (!strncmp(psmouse->ps2dev.serio->firmware_id, "PNP:", 4)) {
+                        for (i = 0; topbuttonpad_pnp_ids[i]; i++) {
+                                if (strstr(psmouse->ps2dev.serio->firmware_id,
+                                           topbuttonpad_pnp_ids[i])) {
+                                        __set_bit(INPUT_PROP_TOPBUTTONPAD,
+                                                  dev->propbit);
+                                        break;
+                                }
+                        }
+                }
                 /* Clickpads report only left button */
                 __clear_bit(BTN_RIGHT, dev->keybit);
                 __clear_bit(BTN_MIDDLE, dev->keybit);
@@ -1515,6 +1566,14 @@ static const struct dmi_system_id min_max_dmi_table[] __initconst = {
                 .driver_data = (int []){1232, 5710, 1156, 4696},
         },
         {
+                /* Lenovo ThinkPad T431s */
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+                        DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T431"),
+                },
+                .driver_data = (int []){1024, 5112, 2024, 4832},
+        },
+        {
                 /* Lenovo ThinkPad T440s */
                 .matches = {
                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
@@ -1523,6 +1582,14 @@ static const struct dmi_system_id min_max_dmi_table[] __initconst = {
                 .driver_data = (int []){1024, 5112, 2024, 4832},
         },
         {
+                /* Lenovo ThinkPad L440 */
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+                        DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L440"),
+                },
+                .driver_data = (int []){1024, 5112, 2024, 4832},
+        },
+        {
                 /* Lenovo ThinkPad T540p */
                 .matches = {
                         DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
@@ -1530,6 +1597,32 @@ static const struct dmi_system_id min_max_dmi_table[] __initconst = {
                 },
                 .driver_data = (int []){1024, 5056, 2058, 4832},
         },
+        {
+                /* Lenovo ThinkPad L540 */
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+                        DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L540"),
+                },
+                .driver_data = (int []){1024, 5112, 2024, 4832},
+        },
+        {
+                /* Lenovo Yoga S1 */
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+                        DMI_EXACT_MATCH(DMI_PRODUCT_VERSION,
+                                        "ThinkPad S1 Yoga"),
+                },
+                .driver_data = (int []){1232, 5710, 1156, 4696},
+        },
+        {
+                /* Lenovo ThinkPad X1 Carbon Haswell (3rd generation) */
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+                        DMI_MATCH(DMI_PRODUCT_VERSION,
+                                        "ThinkPad X1 Carbon 2nd"),
+                },
+                .driver_data = (int []){1024, 5112, 2024, 4832},
+        },
 #endif
         { }
 };
@@ -1593,7 +1686,7 @@ static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
                      priv->capabilities, priv->ext_cap, priv->ext_cap_0c,
                      priv->board_id, priv->firmware_id);
 
-        set_input_params(psmouse->dev, priv);
+        set_input_params(psmouse, priv);
 
         /*
          * Encode touchpad model so that it can be used to set