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authorDuson Lin <dusonlin@emc.com.tw>2015-04-20 10:19:24 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2015-04-20 10:30:09 -0700
commit9f423801c9e849df56b37833df895685c9d8a940 (patch)
tree2fcb2973ca8422f12540f5a65fbd6fd3a161ed22
parent090ad325068810a9edb09dfe8fec97a724c5743f (diff)
Input: elan_i2c - fix calculating number of x and y traces.
According to Elan's firmware engineers we should not be subtracting 1 form the raw number of x and y traces so that the pitch size is correct. For example, if the touchpad x resolution is 2800 and x trace number is 20, the pitch size of x should be 2800/20 = 140, not 2800/19 = 147.36. Signed-off-by: Duson Lin <dusonlin@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
-rw-r--r--drivers/input/mouse/elan_i2c_i2c.c4
-rw-r--r--drivers/input/mouse/elan_i2c_smbus.c4
2 files changed, 4 insertions, 4 deletions
diff --git a/drivers/input/mouse/elan_i2c_i2c.c b/drivers/input/mouse/elan_i2c_i2c.c
index df221401c12a..a0acbbf83bfd 100644
--- a/drivers/input/mouse/elan_i2c_i2c.c
+++ b/drivers/input/mouse/elan_i2c_i2c.c
@@ -365,8 +365,8 @@ static int elan_i2c_get_num_traces(struct i2c_client *client,
return error;
}
- *x_traces = val[0] - 1;
- *y_traces = val[1] - 1;
+ *x_traces = val[0];
+ *y_traces = val[1];
return 0;
}
diff --git a/drivers/input/mouse/elan_i2c_smbus.c b/drivers/input/mouse/elan_i2c_smbus.c
index 62391b281020..30ab80dbcdd6 100644
--- a/drivers/input/mouse/elan_i2c_smbus.c
+++ b/drivers/input/mouse/elan_i2c_smbus.c
@@ -268,8 +268,8 @@ static int elan_smbus_get_num_traces(struct i2c_client *client,
return error;
}
- *x_traces = val[1] - 1;
- *y_traces = val[2] - 1;
+ *x_traces = val[1];
+ *y_traces = val[2];
return 0;
}