From patchwork Fri Aug 12 17:16:47 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Kurtz X-Patchwork-Id: 1061732 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.4) with ESMTP id p7CHIBC7026096 for ; Fri, 12 Aug 2011 17:18:12 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753133Ab1HLRRz (ORCPT ); Fri, 12 Aug 2011 13:17:55 -0400 Received: from smtp-out.google.com ([216.239.44.51]:55707 "EHLO smtp-out.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752667Ab1HLRQ7 (ORCPT ); Fri, 12 Aug 2011 13:16:59 -0400 Received: from wpaz37.hot.corp.google.com (wpaz37.hot.corp.google.com [172.24.198.101]) by smtp-out.google.com with ESMTP id p7CHGtGx008014; Fri, 12 Aug 2011 10:16:55 -0700 Received: from puck.tpe.corp.google.com (puck.tpe.corp.google.com [172.30.210.35]) by wpaz37.hot.corp.google.com with ESMTP id p7CHGrYx012282; Fri, 12 Aug 2011 10:16:53 -0700 Received: by puck.tpe.corp.google.com (Postfix, from userid 116377) id 9ED5280C0E; Sat, 13 Aug 2011 01:16:50 +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 8/8 v3] Input: synaptics - process finger (<=5) transitions Date: Sat, 13 Aug 2011 01:16:47 +0800 Message-Id: <1313169407-4358-9-git-send-email-djkurtz@chromium.org> X-Mailer: git-send-email 1.7.3.1 In-Reply-To: <1313169407-4358-1-git-send-email-djkurtz@chromium.org> References: <1313169407-4358-1-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 (demeter1.kernel.org [140.211.167.41]); Fri, 12 Aug 2011 17:18:12 +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 --- drivers/input/mouse/synaptics.c | 44 ++++++++++++++++++++++++++++++++++++++- 1 files changed, 43 insertions(+), 1 deletions(-) diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index 57104ed..6f71cb7 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -755,6 +755,10 @@ 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; } } @@ -809,6 +813,10 @@ 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; } } @@ -837,6 +845,22 @@ 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. * @@ -876,9 +900,22 @@ 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) { @@ -898,8 +935,10 @@ 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(psmouse, &mt_state, sgm); @@ -1118,6 +1157,9 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv) input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); /* Image sensors can sometimes report per-contact width */ input_set_abs_params(dev, ABS_MT_TOUCH_MAJOR, 4, 15, 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);