From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5B31BCEACEE for ; Tue, 1 Oct 2024 18:33:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=rlcHKQwn5L21aymtnarukq/iOfnG9kcJ0DkEr1DK1Lo=; b=kL70MZpbTK8H2F/pAYmGULB5au e4Dcx+nFG/VTkXNGnCpnykbxziVdW8ju9E9AfgOaJAWsBmmEITq1b8gZ3NEV9atTZzDUshSfxqnaP gZ7c4OXq3hWthSj83X2JC1z8njEwvRYzNMkr/XJgjagb7s+TLzKdr6A8bv6H6G2R2y5hi7WBp0XyM lMfYcbZi3Pq1U5whrNDLpbDfNPdJB0zg/fuK4tYlDBq1QvBdoTbP2iuuk2qidZqADExqioRZqxL/Z Q+z6niDARJTHDHhdVLM/gwZ9zVD3BLWFt4bpr46TTB6mdg1s+8eFCxHzRX4aKNtNQoKeKtta4IYfu NjQsXEBQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1svhgE-00000003mp3-3niA; Tue, 01 Oct 2024 18:33:02 +0000 Received: from out-172.mta1.migadu.com ([95.215.58.172]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1svhez-00000003mTx-28V4 for linux-arm-kernel@lists.infradead.org; Tue, 01 Oct 2024 18:31:47 +0000 Message-ID: <5e9769dd-459a-4ff3-aebb-bb7057192733@linux.dev> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1727807494; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=rlcHKQwn5L21aymtnarukq/iOfnG9kcJ0DkEr1DK1Lo=; b=u4qt7krlAH/WlmjcZxvGLaQuYPDvn//4i6Oj/BnHRm8F9LMSa8bxOvbXzLTd15EZ7pnktz CoUGfmRaSPfhfXCrWvCV2avcLd2CdV7WT9RjdlEzx+UjfPGq3NmOMI1cRge27qBplGZFxd kkF/hsu2qHQr3beT6mNTTr1uMQ7EYVU= Date: Tue, 1 Oct 2024 14:31:28 -0400 MIME-Version: 1.0 Subject: Re: [PATCH v6 0/8] drm: zynqmp_dp: IRQ cleanups and debugfs support To: Laurent Pinchart , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, David Airlie , Michal Simek , Daniel Vetter , Tomi Valkeinen References: <20240809193600.3360015-1-sean.anderson@linux.dev> Content-Language: en-US X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Sean Anderson In-Reply-To: <20240809193600.3360015-1-sean.anderson@linux.dev> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241001_113145_727005_C5D77F0B X-CRM114-Status: GOOD ( 17.09 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 8/9/24 15:35, Sean Anderson wrote: > This series cleans up the zyqnmp_dp IRQ and locking situation. Once > that's done, it adds debugfs support. The intent is to enable compliance > testing or to help debug signal-integrity issues. > > Previously, I discussed converting the HPD work(s) to a threaded IRQ. I > did not end up doing that for this series since the steps would be > > - Add locking > - Move link retraining to a work function > - Harden the IRQ > - Merge the works into a threaded IRQ (omitted) > > Which with the exception of the final step is the same as leaving those > works as-is. Conversion to a threaded IRQ can be done as a follow-up. > > Changes in v6: > - Unplug DRM device before removal > - Fix hang upon driver removal > - Rebase onto drm-misc/drm-misc-next > > Changes in v5: > - Rebase onto drm-misc/drm-misc-next > > Changes in v4: > - Rebase onto drm/drm-next > > Changes in v3: > - Convert to a hard IRQ > - Use AUX IRQs instead of polling > - Take dp->lock in zynqmp_dp_hpd_work_func > > Changes in v2: > - Split off the HPD IRQ work into another commit > - Expand the commit message > - Document hpd_irq_work > - Document debugfs files > - Add ignore_aux_errors and ignore_hpd debugfs files to replace earlier > implicit functionality > - Attempt to fix unreproducable, spurious build warning > - Drop "Optionally ignore DPCD errors" in favor of a debugfs file > directly affecting zynqmp_dp_aux_transfer. > > Sean Anderson (8): > drm: zynqmp_kms: Unplug DRM device before removal > drm: zynqmp_dp: Add locking > drm: zynqmp_dp: Don't retrain the link in our IRQ > drm: zynqmp_dp: Convert to a hard IRQ > drm: zynqmp_dp: Use AUX IRQs instead of polling > drm: zynqmp_dp: Split off several helper functions > drm: zynqmp_dp: Take dp->lock in zynqmp_dp_hpd_work_func > drm: zynqmp_dp: Add debugfs interface for compliance testing > > Documentation/gpu/drivers.rst | 1 + > Documentation/gpu/zynqmp.rst | 149 ++++++ > MAINTAINERS | 1 + > drivers/gpu/drm/xlnx/zynqmp_dp.c | 846 ++++++++++++++++++++++++++++-- > drivers/gpu/drm/xlnx/zynqmp_kms.c | 2 +- > 5 files changed, 951 insertions(+), 48 deletions(-) > create mode 100644 Documentation/gpu/zynqmp.rst > ping --Sean