This feature is disabled by default; enable with CYPRESS_SIMULATED_MT.
Instead of SEMI_MT, present a full mt interface with simulated contact
positions for >=3 fingers. Enables e.g. multi-finger tap and drag for
old userspace applications which only count the contact positions.
Signed-off-by: Kamal Mostafa <ka...@canonical.com>
---
drivers/input/mouse/cypress_ps2.c | 18 ++++++++++++++++++
drivers/input/mouse/cypress_ps2.h | 16 ++++++++++++++--
2 files changed, 32 insertions(+), 2 deletions(-)
diff --git a/drivers/input/mouse/cypress_ps2.c
b/drivers/input/mouse/cypress_ps2.c
index fab4d18..088cdb8 100644
--- a/drivers/input/mouse/cypress_ps2.c
+++ b/drivers/input/mouse/cypress_ps2.c
@@ -408,7 +408,9 @@ static int cypress_set_input_params(struct input_dev *input,
if (ret < 0)
return ret;
+#if ( CYPRESS_SIMULATED_MT != 1 )
__set_bit(INPUT_PROP_SEMI_MT, input->propbit);
+#endif
if (cytp->tp_res_x && cytp->tp_res_y) {
input_abs_set_res(input, ABS_X, cytp->tp_res_x);
@@ -531,6 +533,22 @@ static int cypress_parse_packet(struct psmouse *psmouse,
((packet[5] & 0x0f) << 8) | packet[7];
if (cytp->mode & CYTP_BIT_ABS_PRESSURE)
report_data->contacts[1].z =
report_data->contacts[0].z;
+#if ( CYPRESS_SIMULATED_MT == 1 )
+ /* simulate contact positions for >2 fingers */
+ if ( report_data->contact_cnt >= 3 ) {
+ int i;
+ for ( i=1; i<report_data->contact_cnt; i++ ) {
+ report_data->contacts[i].x =
+ report_data->contacts[0].x
+ + 100*(i)*((i%2)?-1:1);
+ report_data->contacts[i].y =
+ report_data->contacts[0].y;
+ if (cytp->mode & CYTP_BIT_ABS_PRESSURE)
+ report_data->contacts[i].z =
+ report_data->contacts[0].z;
+ }
+ }
+#endif
}
report_data->left = (header_byte & BTN_LEFT_BIT) ? 1 : 0;
diff --git a/drivers/input/mouse/cypress_ps2.h
b/drivers/input/mouse/cypress_ps2.h
index a74f985..c38cb6f 100644
--- a/drivers/input/mouse/cypress_ps2.h
+++ b/drivers/input/mouse/cypress_ps2.h
@@ -133,8 +133,20 @@
#define RESP_REMOTE_BIT 0x40
#define RESP_SMBUS_BIT 0x80
-#define CYTP_MAX_CONTACTS 2
-#define CYTP_MAX_MT_SLOTS 2
+/*
+ * CYPRESS_SIMULATED_MT
+ * set to 1 for simulated multitouch (up to CTYP_MAX_CONTACTS fingers)
+ * set to 0 for SEMI_MT (2 fingers only)
+ */
+#define CYPRESS_SIMULATED_MT 0
+
+#if ( CYPRESS_SIMULATED_MT == 1 )
+# define CYTP_MAX_CONTACTS 5
+# define CYTP_MAX_MT_SLOTS 16
+#else
+# define CYTP_MAX_CONTACTS 2
+# define CYTP_MAX_MT_SLOTS 2
+#endif
enum cytp_type {
CYTP_STG,
--
1.7.10.4
--
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