when the alps trackpoint is detected and using the alps_v8_protocol_data
procotol, the alps driver will not report the input data.
solution: use standard mouse driver instead of alps driver when the specail
trackpoint was detected.
Signed-off-by: XiaoXiao Liu <sliuuxiaonxiao@xxxxxxxxx>
---
drivers/input/mouse/alps.c | 23 ++++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index 0a6f7ca883e7..516ae1d0eb17 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -24,7 +24,7 @@
#include "psmouse.h"
#include "alps.h"
-
+#include "trackpoint.h"
/*
* Definitions for ALPS version 3 and 4 command mode protocol
*/
@@ -2864,6 +2864,22 @@ static const struct alps_protocol_info *alps_match_table(unsigned char *e7,
return NULL;
}
+int alps_check_is_trackpoint(struct psmouse *psmouse)
+{
+ u8 param[2] = { 0 };
+ int error;
+
+ error = ps2_command(&psmouse->ps2dev,
+ param, MAKE_PS2_CMD(0, 2, TP_READ_ID));
+ if (error)
+ return error;
+
+ if (param[0] == TP_VARIANT_ALPS)
+ return 0;
+ psmouse_warn(psmouse, "It is not alps trackpoint.\n");
+ return -ENODEV;
+}
+
static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
{
const struct alps_protocol_info *protocol;
@@ -2912,6 +2928,11 @@ static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
protocol = &alps_v3_protocol_data;
} else if (e7[0] == 0x73 && e7[1] == 0x03 &&
(e7[2] == 0x14 || e7[2] == 0x28)) {
+ if (alps_check_is_trackpoint(psmouse) == 0) {
+ psmouse_warn(psmouse,
+ "It is alps trackpoint, use the standard mouse driver.\n");
+ return -EINVAL;
+ }
protocol = &alps_v8_protocol_data;
} else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0xc8) {
protocol = &alps_v9_protocol_data;
--
2.20.1
