From patchwork Thu Aug 18 11:28:08 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Kurtz X-Patchwork-Id: 1076192 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter2.kernel.org (8.14.4/8.14.4) with ESMTP id p7IBT3R8022788 for ; Thu, 18 Aug 2011 11:29:03 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755608Ab1HRL2q (ORCPT ); Thu, 18 Aug 2011 07:28:46 -0400 Received: from smtp-out.google.com ([216.239.44.51]:28304 "EHLO smtp-out.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755606Ab1HRL2V (ORCPT ); Thu, 18 Aug 2011 07:28:21 -0400 Received: from hpaq11.eem.corp.google.com (hpaq11.eem.corp.google.com [172.25.149.11]) by smtp-out.google.com with ESMTP id p7IBSGiD009915; Thu, 18 Aug 2011 04:28:16 -0700 Received: from puck.tpe.corp.google.com (puck.tpe.corp.google.com [172.30.210.35]) by hpaq11.eem.corp.google.com with ESMTP id p7IBSDQf011233; Thu, 18 Aug 2011 04:28:14 -0700 Received: by puck.tpe.corp.google.com (Postfix, from userid 116377) id 4F4A381010; Thu, 18 Aug 2011 19:28:10 +0800 (CST) From: Daniel Kurtz To: chase.douglas@canonical.com, dmitry.torokhov@gmail.com, rydberg@euromail.se Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, olofj@chromium.org, chris@cnpbagwell.com, Daniel Kurtz Subject: [PATCH 9/9 v4] Input: synaptics - process finger (<=5) transitions Date: Thu, 18 Aug 2011 19:28:08 +0800 Message-Id: <1313666888-18939-10-git-send-email-djkurtz@chromium.org> X-Mailer: git-send-email 1.7.3.1 In-Reply-To: <1313666888-18939-1-git-send-email-djkurtz@chromium.org> References: <1313666888-18939-1-git-send-email-djkurtz@chromium.org> X-System-Of-Record: true Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter2.kernel.org [140.211.167.43]); Thu, 18 Aug 2011 11:29:03 +0000 (UTC) Synaptics image sensor touchpads track up to 5 fingers, but only report 2. They use a special "TYPE=2" (AGM-CONTACT) packet type that reports the number of tracked fingers and which finger is reported in the SGM and AGM packets. With this new packet type, it is possible to tell userspace when 4 or 5 fingers are touching. Signed-off-by: Daniel Kurtz Acked-by: Chase Douglas --- drivers/input/mouse/synaptics.c | 45 ++++++++++++++++++++++++++++++++++++++- 1 files changed, 44 insertions(+), 1 deletions(-) diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index 3840cc7..4e9bc4a 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -739,6 +739,10 @@ static void synaptics_image_sensor_1f(struct synaptics_data *priv, synaptics_mt_state_set(mt_state, 1, -1, -1); priv->mt_state_lost = true; break; + case 4: + case 5: + /* mt_state was updated by AGM-CONTACT packet */ + break; } } @@ -793,6 +797,10 @@ static void synaptics_image_sensor_2f(struct synaptics_data *priv, synaptics_mt_state_set(mt_state, 2, -1, -1); priv->mt_state_lost = true; break; + case 4: + case 5: + /* mt_state was updated by AGM-CONTACT packet */ + break; } } @@ -821,6 +829,22 @@ static void synaptics_image_sensor_3f(struct synaptics_data *priv, break; case 2: /* + * If the AGM previously contained slot 3 or higher, then the + * newly touching finger is in the lowest available slot. + * + * If SGM was previously 1 or higher, then the new SGM is + * now slot 0 (with a new finger), otherwise, the new finger + * is now in a hidden slot between 0 and AGM's slot. + * + * In all such cases, the SGM now contains slot 0, and the AGM + * continues to contain the same slot as before. + */ + if (old->agm >= 3) { + synaptics_mt_state_set(mt_state, 3, 0, old->agm); + break; + } + + /* * After some 3->1 and all 3->2 transitions, we lose track * of which slot is reported by SGM and AGM. * @@ -860,9 +884,22 @@ static void synaptics_image_sensor_3f(struct synaptics_data *priv, * received AGM-CONTACT packet. */ break; + + case 4: + case 5: + /* mt_state was updated by AGM-CONTACT packet */ + break; } } +/* Handle case where mt_state->count = 4, or = 5 */ +static void synaptics_image_sensor_45f(struct synaptics_data *priv, + struct synaptics_mt_state *mt_state) +{ + /* mt_state was updated correctly by AGM-CONTACT packet */ + priv->mt_state_lost = false; +} + static void synaptics_image_sensor_process(struct psmouse *psmouse, struct synaptics_hw_state *sgm) { @@ -882,8 +919,10 @@ static void synaptics_image_sensor_process(struct psmouse *psmouse, synaptics_image_sensor_1f(priv, &mt_state); else if (sgm->w == 0) synaptics_image_sensor_2f(priv, &mt_state); - else if (sgm->w == 1) + else if (sgm->w == 1 && mt_state.count <= 3) synaptics_image_sensor_3f(priv, &mt_state); + else + synaptics_image_sensor_45f(priv, &mt_state); /* Send resulting input events to user space */ synaptics_report_mt_data(psmouse, &mt_state, sgm); @@ -1100,6 +1139,10 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv) ABS_MT_POSITION_Y); /* Image sensors can report per-contact pressure */ input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); + + /* Image sensors can signal 4 and 5 finger clicks */ + __set_bit(BTN_TOOL_QUADTAP, dev->keybit); + __set_bit(BTN_TOOL_QUINTTAP, dev->keybit); } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) { /* Non-image sensors with AGM use semi-mt */ __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);