From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-1468877-1518325134-2-2280649814175220665 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.001, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='uk', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1518325134; b=PrXIEZjVBChJDDxDIosBa6ZLSwIzoxXTU+MqatN228GHBwa b0pOEQZoDIgPOLPzExHjgPzOrnlcR6jDJafCP07C3wRTsGWWVKbbqv90KlMSHUs1 ntN5XcsiEO/JjHHUerrFAuRRyjMFzE63SXpEnUfN8U3Jx1XHtu0DYQ4nrHGO9WhQ G2mTXf/SP/lpc1or0KLqWCkAV3KlcH1ZecPutWZpI9iGmlk3/hv8ADu/pUH/8kQh m3CuHuRuKsuY6N9VGkFS4jN6nsldTDiZ+fcBLmfMaYlO46+6I4GolpnZJkTQfFPe uYREUivg4xElumr+GoMhQaxvE7addyJN1/PLp8Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=content-type:content-transfer-encoding :mime-version:from:to:cc:date:message-id:subject:in-reply-to :sender:list-id; s=arctest; t=1518325134; bh=sa1wKXkKLT7kjcRGNLf MBxmYBFbdjdIBXt1/gCK/Sko=; b=IJWMieZf1EFUeEpfpbchnm/1zhFWwNqF5Sp j/95B+f39wQ6QC/OCDYfBxc0KTaW8cL0L1jq37206eNNgqRz1G6d3VfkdfZ76jSY RNKW9uigmidAodRj2u00EDOxB0KINJPQwYOjcjKgvg095QkGtGmz26KBaMfRh2h9 M9hJ8428vpkKnAb/qRuCtFqC+2dFdM7LefxMgTJuH0COq/bWL/obmKZrQLZPzMyn e4xvSrPOnOQRZntVs51N96NJrJ/QsYDZfYGgqjmvr15dtAcooHt+wrbL4M67O7Fo Tqzc2KqyU80+YQDkJT2M5aen82MEonIus1OXrHRiJ/pn6AYUgtg== ARC-Authentication-Results: i=1; mx4.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=decadent.org.uk; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=decadent.org.uk header.result=pass header_is_org_domain=yes Authentication-Results: mx4.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=decadent.org.uk; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=decadent.org.uk header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753810AbeBKE6u (ORCPT ); Sat, 10 Feb 2018 23:58:50 -0500 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:41678 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752779AbeBKEd4 (ORCPT ); Sat, 10 Feb 2018 23:33:56 -0500 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, "Manasi Navare" , "Daniel Vetter" , "Jani Nikula" , "Jani Nikula" Date: Sun, 11 Feb 2018 04:31:11 +0000 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) Subject: [PATCH 3.16 009/136] drm/i915/edp: Get the Panel Power Off timestamp after panel is off In-Reply-To: X-SA-Exim-Connect-IP: 2a02:8011:400e:2:6f00:88c8:c921:d332 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 3.16.54-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Manasi Navare commit cbacf02e7796fea02e5c6e46c90ed7cbe9e6f2c0 upstream. Kernel stores the time in jiffies at which the eDP panel is turned off. This should be obtained after the panel is off (after the wait_panel_off). When we next attempt to turn the panel on, we use the difference between the timestamp at which we want to turn the panel on and timestamp at which panel was turned off to ensure that this is equal to panel power cycle delay and if not we wait for the remaining time. Not waiting for the panel power cycle delay can cause the panel to not turn on giving rise to AUX timeouts for the attempted AUX transactions. v2: * Separate lines for bugzilla (Jani Nikula) * Suggested by tag (Daniel Vetter) Cc: Daniel Vetter Cc: Jani Nikula Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101518 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101144 Suggested-by: Daniel Vetter Signed-off-by: Manasi Navare Reviewed-by: Daniel Vetter Reviewed-by: Jani Nikula Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/1507135706-17147-1-git-send-email-manasi.d.navare@intel.com [bwh: Backported to 3.16: We really do use jiffies here, and the field in struct intel_dp has a different name] Signed-off-by: Ben Hutchings --- drivers/gpu/drm/i915/intel_dp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1365,8 +1365,8 @@ void intel_edp_panel_off(struct intel_dp I915_WRITE(pp_ctrl_reg, pp); POSTING_READ(pp_ctrl_reg); - intel_dp->last_power_cycle = jiffies; wait_panel_off(intel_dp); + intel_dp->last_power_cycle = jiffies; /* We got a reference when we enabled the VDD. */ power_domain = intel_display_port_power_domain(intel_encoder);