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From: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Date: Sun, 8 Mar 2015 22:34:03 -0700
Subject: [PATCH] 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>
---
drivers/input/mouse/synaptics.c | 23 ++++++++++++++++++++---
drivers/input/mouse/synaptics.h | 23 +++++++++++++++++++++++
2 files changed, 43 insertions(+), 3 deletions(-)
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index ff352ecca394..83099eb8cf86 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -244,11 +244,24 @@ 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];
@@ -260,6 +273,10 @@ 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;
}
@@ -449,7 +466,7 @@ 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 aedc3299b14e..85180140509e 100644
--- 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))
@@ -143,6 +165,7 @@ 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) */
--
2.1.0
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