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Subject[PATCH 13/19] Input: bcm5974 - Drop pressure and width emulation
Date
The ABS_PRESSURE and ABS_WIDTH have special scales, and were initially
added solely for thumb and palm recognition in the synaptics driver.
This never really get used, however, and userspace quickly moved to
MT solutions instead. This patch drops the unused events.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
---
drivers/input/mouse/bcm5974.c | 26 +++++---------------------
1 file changed, 5 insertions(+), 21 deletions(-)

diff --git a/drivers/input/mouse/bcm5974.c b/drivers/input/mouse/bcm5974.c
index 2d6468f..8443872 100644
--- a/drivers/input/mouse/bcm5974.c
+++ b/drivers/input/mouse/bcm5974.c
@@ -417,10 +417,6 @@ static void setup_events_to_report(struct input_dev *input_dev,
{
__set_bit(EV_ABS, input_dev->evbit);

- input_set_abs_params(input_dev, ABS_PRESSURE,
- 0, cfg->p.dim, cfg->p.fuzz, 0);
- input_set_abs_params(input_dev, ABS_TOOL_WIDTH,
- 0, cfg->w.dim, cfg->w.fuzz, 0);
input_set_abs_params(input_dev, ABS_X,
0, cfg->x.dim, cfg->x.fuzz, 0);
input_set_abs_params(input_dev, ABS_Y,
@@ -502,9 +498,9 @@ static int report_tp_state(struct bcm5974 *dev, int size)
const struct bcm5974_config *c = &dev->cfg;
const struct tp_finger *f;
struct input_dev *input = dev->input;
- int raw_p, raw_w, raw_x, raw_y, raw_n, i;
+ int raw_p, raw_x, raw_y, raw_n, i;
int ptest, origin, ibt = 0, nmin = 0, nmax = 0;
- int abs_p = 0, abs_w = 0, abs_x = 0, abs_y = 0;
+ int abs_x = 0, abs_y = 0;

if (size < c->tp_offset || (size - c->tp_offset) % SIZEOF_FINGER != 0)
return -EIO;
@@ -521,22 +517,19 @@ static int report_tp_state(struct bcm5974 *dev, int size)
report_finger_data(input, c, &f[i]);

raw_p = raw2int(f->touch_major);
- raw_w = raw2int(f->tool_major);
raw_x = raw2int(f->abs_x);
raw_y = raw2int(f->abs_y);

dprintk(9,
"bcm5974: "
- "raw: p: %+05d w: %+05d x: %+05d y: %+05d n: %d\n",
- raw_p, raw_w, raw_x, raw_y, raw_n);
+ "raw: p: %+05d x: %+05d y: %+05d n: %d\n",
+ raw_p, raw_x, raw_y, raw_n);

ptest = int2bound(&c->p, raw_p);
origin = raw2int(f->origin);

/* while tracking finger still valid, count all fingers */
if (ptest > PRESSURE_LOW && origin) {
- abs_p = ptest;
- abs_w = int2bound(&c->w, raw_w);
abs_x = int2bound(&c->x, raw_x - c->x.devmin);
abs_y = int2bound(&c->y, c->y.devmax - raw_y);
while (raw_n--) {
@@ -566,18 +559,9 @@ static int report_tp_state(struct bcm5974 *dev, int size)
input_report_key(input, BTN_TOOL_TRIPLETAP, dev->fingers == 3);
input_report_key(input, BTN_TOOL_QUADTAP, dev->fingers > 3);

- input_report_abs(input, ABS_PRESSURE, abs_p);
- input_report_abs(input, ABS_TOOL_WIDTH, abs_w);
-
- if (abs_p) {
+ if (dev->fingers > 0) {
input_report_abs(input, ABS_X, abs_x);
input_report_abs(input, ABS_Y, abs_y);
-
- dprintk(8,
- "bcm5974: abs: p: %+05d w: %+05d x: %+05d y: %+05d "
- "nmin: %d nmax: %d n: %d ibt: %d\n", abs_p, abs_w,
- abs_x, abs_y, nmin, nmax, dev->fingers, ibt);
-
}

/* type 2 reports button events via ibt only */
--
1.7.11.4


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