From nobody Tue Feb 10 03:45:18 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 43530C7619A for ; Fri, 31 Mar 2023 03:02:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229916AbjCaDCb (ORCPT ); Thu, 30 Mar 2023 23:02:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58742 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229900AbjCaDC1 (ORCPT ); Thu, 30 Mar 2023 23:02:27 -0400 Received: from mail-pj1-x1036.google.com (mail-pj1-x1036.google.com [IPv6:2607:f8b0:4864:20::1036]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B3E0C18F85 for ; Thu, 30 Mar 2023 20:02:17 -0700 (PDT) Received: by mail-pj1-x1036.google.com with SMTP id e15-20020a17090ac20f00b0023d1b009f52so24022572pjt.2 for ; Thu, 30 Mar 2023 20:02:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1680231737; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=tgWvZk/iYpzKLUB9q2hMoB7/A/zWlAyiQxZw3rH6JH8=; b=nwdcz7JvfPrKuBBFQbSTVzhnbveNuT0oeykwisT1ina7IqUJiTRcjS2JroFUBNSsmy xC6i4I30tn1w9bVPBxXRrAq0+1KV8vSxunewLOqpms6By0zg2pdO+fvyJiIbv0tWauC7 379VgmdQeQw7CMx+2tJU3li4owlI9njsAI/fQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1680231737; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=tgWvZk/iYpzKLUB9q2hMoB7/A/zWlAyiQxZw3rH6JH8=; b=HMsLLO8M0ZzByEO04z2WPuDy4WmzvI2rrEWiobktGPmK7AUFIV92RLG3QLn1Z93dia FX17aW74lJZjSyzajhOuqJRL4kfB7rjF7+YjtiyHQ/jfEaRS3n6o7yxjIU/kSIS9o//+ doN1AnpbvpxetFlxIdWI5SYgUnwqKQrBvnwfe7K/WwINZIe+wc6L0zreePVfYalaWhC3 PrK7tH3tatHIxu6SJXy9rNZTGe0FmI5aB+laE70NUrW9YJLuZK0T8YFVYariqEOTDFWu 7B0wP0dqcfcQG5pnPnS22MSYu7h0LDzJgoAzSNW2kWqRJ3lyJ73caK6hDkM8Q8E8atTs J1ug== X-Gm-Message-State: AAQBX9ewuhWyKHCnIyb+hT/HxmyfhsXLR8N3W6qWb2SqvVwoNrbnFSbQ eeko1gC0Vt1v/mmvdl/qvlzLEg== X-Google-Smtp-Source: AKy350YBPmqeZ+L0wfFVGJRQxmR8TfTsUMdXcRm/uj3m1QuxtTD528I3y2vtYKjKoem8ZXpz56msnw== X-Received: by 2002:a17:902:e812:b0:19c:e440:9256 with SMTP id u18-20020a170902e81200b0019ce4409256mr31915039plg.35.1680231737143; Thu, 30 Mar 2023 20:02:17 -0700 (PDT) Received: from treapking.tpe.corp.google.com ([2401:fa00:1:10:d07:95ff:f44a:71]) by smtp.gmail.com with ESMTPSA id b19-20020a170902d89300b001a072be70desm429750plz.41.2023.03.30.20.02.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 Mar 2023 20:02:16 -0700 (PDT) From: Pin-yen Lin To: Douglas Anderson , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Daniel Vetter , David Airlie , Pin-yen Lin Subject: [PATCH] drm/bridge: ps8640: Use constant sleep time for polling hpd Date: Fri, 31 Mar 2023 11:02:04 +0800 Message-Id: <20230331030204.1179524-1-treapking@chromium.org> X-Mailer: git-send-email 2.40.0.348.gf938b09366-goog MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The default hpd_wait_us in panel_edp.c is 2 seconds. This makes the sleep time in the polling of _ps8640_wait_hpd_asserted become 200ms. Change it to a constant 20ms to speed up the function. Signed-off-by: Pin-yen Lin Reviewed-by: Douglas Anderson Reviewed-by: Robert Foss --- drivers/gpu/drm/bridge/parade-ps8640.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/parade-ps8640.c b/drivers/gpu/drm/bridg= e/parade-ps8640.c index b823e55650b1..c3eb45179405 100644 --- a/drivers/gpu/drm/bridge/parade-ps8640.c +++ b/drivers/gpu/drm/bridge/parade-ps8640.c @@ -184,7 +184,7 @@ static int _ps8640_wait_hpd_asserted(struct ps8640 *ps_= bridge, unsigned long wai * actually connected to GPIO9). */ ret =3D regmap_read_poll_timeout(map, PAGE2_GPIO_H, status, - status & PS_GPIO9, wait_us / 10, wait_us); + status & PS_GPIO9, 20000, wait_us); =20 /* * The first time we see HPD go high after a reset we delay an extra --=20 2.40.0.348.gf938b09366-goog