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authorBenjamin Tissoires <benjamin.tissoires@redhat.com>2015-03-08 22:34:03 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2015-03-08 23:36:52 -0700
commit06aa374bc70468b517dd36b95c48c8f391c08a27 (patch)
treec46b4adaa583cd28ae68a39b13092d257d4c812f /drivers/input/mouse/synaptics.c
parentb57a7128be24062b5b5b26032b7cd58f1651547e (diff)
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>
Diffstat (limited to 'drivers/input/mouse/synaptics.c')
-rw-r--r--drivers/input/mouse/synaptics.c23
1 files changed, 20 insertions, 3 deletions
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 2176874a41b1..8f6a153677b9 100644
--- 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;