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Input: elan_i2c - fix calculating number of x and y traces.

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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>
This commit is contained in:
Duson Lin 2015-04-20 10:19:24 -07:00 committed by Dmitry Torokhov
parent 090ad32506
commit 9f423801c9
2 changed files with 4 additions and 4 deletions
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4
drivers/input/mouse/elan_i2c_i2c.c
View file

@ -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;
}

4
drivers/input/mouse/elan_i2c_smbus.c
View file

@ -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;
}