Input: synaptics - retrieve the extended capabilities in query $10

Newer Synaptics touchpads need to get information from the query $10.
Retrieve it if available.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 2176874..8f6a153 100644 (file)
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -241,11 +241,24 @@ static int synaptics_model_id(struct psmouse *psmouse)
        return 0;
 }
 
+static int synaptics_more_extended_queries(struct psmouse *psmouse)
+{
+       struct synaptics_data *priv = psmouse->private;
+       unsigned char buf[3];
+
+       if (synaptics_send_cmd(psmouse, SYN_QUE_MEXT_CAPAB_10, buf))
+               return -1;
+
+       priv->ext_cap_10 = (buf[0]<<16) | (buf[1]<<8) | buf[2];
+
+       return 0;
+}
+
 /*
- * Read the board id from the touchpad
+ * Read the board id and the "More Extended Queries" from the touchpad
  * The board id is encoded in the "QUERY MODES" response
  */
-static int synaptics_board_id(struct psmouse *psmouse)
+static int synaptics_query_modes(struct psmouse *psmouse)
 {
        struct synaptics_data *priv = psmouse->private;
        unsigned char bid[3];
@@ -257,6 +270,10 @@ static int synaptics_board_id(struct psmouse *psmouse)
        if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid))
                return -1;
        priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
+
+       if (SYN_MEXT_CAP_BIT(bid[0]))
+               return synaptics_more_extended_queries(psmouse);
+
        return 0;
 }
 
@@ -446,7 +463,7 @@ static int synaptics_query_hardware(struct psmouse *psmouse)
                return -1;
        if (synaptics_firmware_id(psmouse))
                return -1;
-       if (synaptics_board_id(psmouse))
+       if (synaptics_query_modes(psmouse))
                return -1;
        if (synaptics_capability(psmouse))
                return -1;

diff --git a/drivers/input/mouse/synaptics.h b/drivers/input/mouse/synaptics.h
index 1bd01f2..8d3761c 100644 (file)
--- a/drivers/input/mouse/synaptics.h
+++ b/drivers/input/mouse/synaptics.h
@@ -22,6 +22,7 @@
 #define SYN_QUE_EXT_CAPAB_0C           0x0c
 #define SYN_QUE_EXT_MAX_COORDS         0x0d
 #define SYN_QUE_EXT_MIN_COORDS         0x0f
+#define SYN_QUE_MEXT_CAPAB_10          0x10
 
 /* synatics modes */
 #define SYN_BIT_ABSOLUTE_MODE          (1 << 7)
@@ -53,6 +54,7 @@
 #define SYN_EXT_CAP_REQUESTS(c)                (((c) & 0x700000) >> 20)
 #define SYN_CAP_MULTI_BUTTON_NO(ec)    (((ec) & 0x00f000) >> 12)
 #define SYN_CAP_PRODUCT_ID(ec)         (((ec) & 0xff0000) >> 16)
+#define SYN_MEXT_CAP_BIT(m)            ((m) & (1 << 1))
 
 /*
  * The following describes response for the 0x0c query.
@@ -89,6 +91,26 @@
 #define SYN_CAP_REDUCED_FILTERING(ex0c)        ((ex0c) & 0x000400)
 #define SYN_CAP_IMAGE_SENSOR(ex0c)     ((ex0c) & 0x000800)
 
+/*
+ * The following descibes response for the 0x10 query.
+ *
+ * byte        mask    name                    meaning
+ * ----        ----    -------                 ------------
+ * 1   0x01    ext buttons are stick   buttons exported in the extended
+ *                                     capability are actually meant to be used
+ *                                     by the tracktick (pass-through).
+ * 1   0x02    SecurePad               the touchpad is a SecurePad, so it
+ *                                     contains a built-in fingerprint reader.
+ * 1   0xe0    more ext count          how many more extented queries are
+ *                                     available after this one.
+ * 2   0xff    SecurePad width         the width of the SecurePad fingerprint
+ *                                     reader.
+ * 3   0xff    SecurePad height        the height of the SecurePad fingerprint
+ *                                     reader.
+ */
+#define SYN_CAP_EXT_BUTTONS_STICK(ex10)        ((ex10) & 0x010000)
+#define SYN_CAP_SECUREPAD(ex10)                ((ex10) & 0x020000)
+
 /* synaptics modes query bits */
 #define SYN_MODE_ABSOLUTE(m)           ((m) & (1 << 7))
 #define SYN_MODE_RATE(m)               ((m) & (1 << 6))
@@ -156,6 +178,7 @@ struct synaptics_data {
        unsigned long int capabilities;         /* Capabilities */
        unsigned long int ext_cap;              /* Extended Capabilities */
        unsigned long int ext_cap_0c;           /* Ext Caps from 0x0c query */
+       unsigned long int ext_cap_10;           /* Ext Caps from 0x10 query */
        unsigned long int identity;             /* Identification */
        unsigned int x_res, y_res;              /* X/Y resolution in units/mm */
        unsigned int x_max, y_max;              /* Max coordinates (from FW) */