From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-189.mta0.migadu.com (out-189.mta0.migadu.com [91.218.175.189]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 159D1154453 for ; Mon, 22 Apr 2024 18:45:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.189 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713811561; cv=none; b=M1GbbS1uuGgIVJ3A61I60nK2YsizuiymEEkkwlBRhd7iM/ThY3LVxnrM4aZBZNoxbN9vWT+EIT73wSivL5GLeHW/drF95FziaLooB1o7+NrTKi76G0IP74vI1OsLHxTIwZYVYZWedZjL4W7J2BM8Cr7i1duoMZorERsYt8rRxqk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713811561; c=relaxed/simple; bh=i0JhnsemiBLqt5TUhdprRNPojGuuNhckUaFzNwqob7c=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=AnRtaxpqhkML4QQZhCP5Mc90/JMvvyuPz0lZbLbPBiW9zW+BnJOs3QN2EKLDDVZXoaLGTOTON0RnuHBoLBvmveV/quXYQVRHJtyAIXYo7+MvcQFGujTViS9RHcd1CoRvatmkvYpqj5ZPah5BaSZ7Fgp6F/z53UkbuFw7mhb4Oj0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=xGEpfK+3; arc=none smtp.client-ip=91.218.175.189 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="xGEpfK+3" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1713811558; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=amqB6+ngfAeMK7LFbICEVIOkozkmR392D+egwlKyyE8=; b=xGEpfK+3vqXV26cx1iQXhOPoewDDeufjuKlIDsyF2JNrn1F4qSdEufgjrLTCpF5uXsuD+X aOzx2lBRTJv0nM+5UxTbuqEbB2w0tWkBBdzrVcBNnTajfwnbXYxkOlcxgPZj3URSYPskYu YRnWH2Xn6QBGdQ0apXLNlnH7yQLD7es= From: Sean Anderson To: Laurent Pinchart , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , dri-devel@lists.freedesktop.org Cc: David Airlie , Daniel Vetter , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Michal Simek , Sean Anderson Subject: [PATCH v3 00/13] drm: zynqmp_dp: IRQ cleanups and debugfs support Date: Mon, 22 Apr 2024 14:45:40 -0400 Message-Id: <20240422184553.3573009-1-sean.anderson@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT 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. Last time 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 v3: - Store base pointers in zynqmp_disp directly - Don't delay work - Convert to a hard IRQ - Use AUX IRQs instead of polling - Take dp->lock in zynqmp_dp_hpd_work_func Changes in v2: - Fix kerneldoc - Rearrange zynqmp_dp for better padding - 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 (13): drm: xlnx: Store base pointers in zynqmp_disp directly drm: xlnx: Fix kerneldoc drm: zynqmp_dp: Downgrade log level for aux retries message drm: zynqmp_dp: Adjust training values per-lane drm: zynqmp_dp: Rearrange zynqmp_dp for better padding drm: zynqmp_dp: Don't delay work 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_disp.c | 44 +- drivers/gpu/drm/xlnx/zynqmp_dp.c | 909 +++++++++++++++++++++++++--- drivers/gpu/drm/xlnx/zynqmp_dpsub.h | 1 + drivers/gpu/drm/xlnx/zynqmp_kms.h | 4 +- 7 files changed, 1000 insertions(+), 109 deletions(-) create mode 100644 Documentation/gpu/zynqmp.rst -- 2.35.1.1320.gc452695387.dirty