From cb15911509164f052f103e85a935f513f82e6b54 Mon Sep 17 00:00:00 2001 From: Daniel Kurtz Date: Thu, 28 Jun 2012 21:08:22 +0800 Subject: [PATCH] Input: atmel_mxt_ts - use T9 reportid range to init number of mt slots 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 Signed-off-by: Henrik Rydberg --- drivers/input/touchscreen/atmel_mxt_ts.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index a9e0b541c638..2746b0dc7f36 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -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) { -- 2.39.5