redonkable/remarkable-linux
redonkable/remarkable-linux
1
0
Fork 0
Code Releases Activity

Input: atmel_mxt_ts - use T9 reportid range to init number of mt slots

Browse source 
Atmel mxt devices can report one finger for each T9 reportid.
Therefore, this range can be used to report the max number of MT-B slots
to userspace instead of assuming a fixed 10.

Note that mxt_initialized() must complete early, since the input_dev
properties now depend on values in the object table.

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
This commit is contained in:
Daniel Kurtz 2012-06-28 21:08:22 +08:00 committed by Henrik Rydberg
parent 04a79181c4
commit cb15911509
1 changed files with 8 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
drivers/input/touchscreen/atmel_mxt_ts.c
View file

@ -212,8 +212,6 @@
/* Touchscreen absolute values */
#define MXT_MAX_AREA 0xff
#define MXT_MAX_FINGER 10
struct mxt_info {
u8 family_id;
u8 variant_id;
@ -1086,6 +1084,7 @@ static int __devinit mxt_probe(struct i2c_client *client,
struct mxt_data *data;
struct input_dev *input_dev;
int error;
unsigned int num_mt_slots;
if (!pdata)
return -EINVAL;
@ -1115,6 +1114,10 @@ static int __devinit mxt_probe(struct i2c_client *client,
mxt_calc_resolution(data);
error = mxt_initialize(data);
if (error)
goto err_free_mem;
__set_bit(EV_ABS, input_dev->evbit);
__set_bit(EV_KEY, input_dev->evbit);
__set_bit(BTN_TOUCH, input_dev->keybit);
@ -1128,9 +1131,10 @@ static int __devinit mxt_probe(struct i2c_client *client,
0, 255, 0, 0);
/* For multi touch */
error = input_mt_init_slots(input_dev, MXT_MAX_FINGER);
num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1;
error = input_mt_init_slots(input_dev, num_mt_slots);
if (error)
goto err_free_mem;
goto err_free_object;
input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
0, MXT_MAX_AREA, 0, 0);
input_set_abs_params(input_dev, ABS_MT_POSITION_X,
@ -1143,10 +1147,6 @@ static int __devinit mxt_probe(struct i2c_client *client,
input_set_drvdata(input_dev, data);
i2c_set_clientdata(client, data);
error = mxt_initialize(data);
if (error)
goto err_free_mem;
error = request_threaded_irq(client->irq, NULL, mxt_interrupt,
pdata->irqflags, client->name, data);
if (error) {