Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752736Ab0FWLPl (ORCPT ); Wed, 23 Jun 2010 07:15:41 -0400 Received: from ch-smtp03.sth.basefarm.net ([80.76.149.214]:50664 "EHLO ch-smtp03.sth.basefarm.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752513Ab0FWLPe (ORCPT ); Wed, 23 Jun 2010 07:15:34 -0400 From: "Henrik Rydberg" To: Dmitry Torokhov Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Jiri Kosina , Ping Cheng , Benjamin Tissoires , Chase Douglas , Rafi Rubin , Henrik Rydberg Subject: [PATCH 4/5] hid-input: Use a larger event buffer for MT devices Date: Wed, 23 Jun 2010 13:14:45 +0200 Message-Id: <1277291686-7153-5-git-send-email-rydberg@euromail.se> X-Mailer: git-send-email 1.6.3.3 In-Reply-To: <1277291686-7153-4-git-send-email-rydberg@euromail.se> References: <1277291686-7153-1-git-send-email-rydberg@euromail.se> <1277291686-7153-2-git-send-email-rydberg@euromail.se> <1277291686-7153-3-git-send-email-rydberg@euromail.se> <1277291686-7153-4-git-send-email-rydberg@euromail.se> X-Originating-IP: 83.248.196.134 X-Scan-Result: No virus found in message 1ORNvC-0002AV-BJ. X-Scan-Signature: ch-smtp03.sth.basefarm.net 1ORNvC-0002AV-BJ 1e1b3f65b1b8ee44ee553469841ce222 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1210 Lines: 32 The MT devices produce a lot of data. Tell the underlying input device approximately how many events will be sent per synchronization, to allow for better buffering. The number is a template based on continuously reporting details for each finger on a single hand. Signed-off-by: Henrik Rydberg --- drivers/hid/hid-input.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index 7a0d2e4..69d152e 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -534,6 +534,9 @@ mapped: input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); else input_set_abs_params(input, usage->code, a, b, 0, 0); + /* use a larger default input buffer for MT devices */ + if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) + input_set_events_per_packet(input, 60); } if (usage->type == EV_ABS && -- 1.6.3.3 -- 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/