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path: root/drivers/input/mouse/alps.c
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Diffstat (limited to 'drivers/input/mouse/alps.c')
-rw-r--r--drivers/input/mouse/alps.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index 113d6f1516a5..4d246861d692 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -20,6 +20,7 @@
#include <linux/input/mt.h>
#include <linux/serio.h>
#include <linux/libps2.h>
+#include <linux/dmi.h>
#include "psmouse.h"
#include "alps.h"
@@ -99,6 +100,7 @@ static const struct alps_nibble_commands alps_v6_nibble_commands[] = {
#define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */
#define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with
6-byte ALPS packet */
+#define ALPS_DELL 0x100 /* device is a Dell laptop */
#define ALPS_BUTTONPAD 0x200 /* device is a clickpad */
static const struct alps_model_info alps_model_data[] = {
@@ -251,9 +253,9 @@ static void alps_process_packet_v1_v2(struct psmouse *psmouse)
return;
}
- /* Non interleaved V2 dualpoint has separate stick button bits */
+ /* Dell non interleaved V2 dualpoint has separate stick button bits */
if (priv->proto_version == ALPS_PROTO_V2 &&
- priv->flags == (ALPS_PASS | ALPS_DUALPOINT)) {
+ priv->flags == (ALPS_DELL | ALPS_PASS | ALPS_DUALPOINT)) {
left |= packet[0] & 1;
right |= packet[0] & 2;
middle |= packet[0] & 4;
@@ -2550,6 +2552,8 @@ static int alps_set_protocol(struct psmouse *psmouse,
priv->byte0 = protocol->byte0;
priv->mask0 = protocol->mask0;
priv->flags = protocol->flags;
+ if (dmi_name_in_vendors("Dell"))
+ priv->flags |= ALPS_DELL;
priv->x_max = 2000;
priv->y_max = 1400;