Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755604Ab2F1NKG (ORCPT ); Thu, 28 Jun 2012 09:10:06 -0400 Received: from mail-qc0-f202.google.com ([209.85.216.202]:49531 "EHLO mail-qc0-f202.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754640Ab2F1NIb (ORCPT ); Thu, 28 Jun 2012 09:08:31 -0400 From: Daniel Kurtz To: Dmitry Torokhov , Henrik Rydberg , Joonyoung Shim , Nick Dyer , Yufeng Shen Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Olof Johansson , Benson Leung , Daniel Kurtz Subject: [PATCH 21/23 v6] Input: atmel_mxt_ts - use T9 reportid range to init number of mt slots Date: Thu, 28 Jun 2012 21:08:22 +0800 Message-Id: <1340888904-15620-22-git-send-email-djkurtz@chromium.org> X-Mailer: git-send-email 1.7.7.3 In-Reply-To: <1340888904-15620-1-git-send-email-djkurtz@chromium.org> References: <1340888904-15620-1-git-send-email-djkurtz@chromium.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2500 Lines: 76 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 --- drivers/input/touchscreen/atmel_mxt_ts.c | 16 ++++++++-------- 1 files changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index a9e0b54..2746b0d 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) { -- 1.7.7.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/