Input: synaptics - set dimensions as reported by firmware

Newer Synaptics firmware allows to query maximim dimensions reported by
device, let's use this data.

Tested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/input/mouse/synaptics.h b/drivers/input/mouse/synaptics.h
index ae37c5d162a..7d4d5e12c0d 100644
--- a/drivers/input/mouse/synaptics.h
+++ b/drivers/input/mouse/synaptics.h
@@ -19,6 +19,7 @@
 #define SYN_QUE_RESOLUTION              0x08
 #define SYN_QUE_EXT_CAPAB               0x09
 #define SYN_QUE_EXT_CAPAB_0C            0x0c
+#define SYN_QUE_EXT_DIMENSIONS          0x0d
 
 /* synatics modes */
 #define SYN_BIT_ABSOLUTE_MODE           (1 << 7)
@@ -51,6 +52,7 @@
 #define SYN_CAP_MULTI_BUTTON_NO(ec)     (((ec) & 0x00f000) >> 12)
 #define SYN_CAP_PRODUCT_ID(ec)          (((ec) & 0xff0000) >> 16)
 #define SYN_CAP_CLICKPAD(ex0c)          ((ex0c) & 0x100100)
+#define SYN_CAP_MAX_DIMENSIONS(ex0c)    ((ex0c) & 0x020000)
 
 /* synaptics modes query bits */
 #define SYN_MODE_ABSOLUTE(m)            ((m) & (1 << 7))
@@ -101,8 +103,8 @@ struct synaptics_data {
         unsigned long int ext_cap;              /* Extended Capabilities */
         unsigned long int ext_cap_0c;           /* Ext Caps from 0x0c query */
         unsigned long int identity;             /* Identification */
-        int x_res;                              /* X resolution in units/mm */
-        int y_res;                              /* Y resolution in units/mm */
+        unsigned int x_res, y_res;              /* X/Y resolution in units/mm */
+        unsigned int x_max, y_max;              /* Max dimensions (from FW) */
 
         unsigned char pkt_type;                 /* packet type - old, new, etc */
         unsigned char mode;                     /* current mode byte */