From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-187.mta1.migadu.com (out-187.mta1.migadu.com [95.215.58.187]) (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 4429163CF for ; Fri, 3 May 2024 19:29:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.187 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714764574; cv=none; b=iyWBHMiGk7pbARm5mHGbnPHz5jXJKruZpe7OBsov+FE750Ot0AH38GL3uH4cErFRvCIxLkTAXN/XEFlrDJ9ujeKn3KTQJTpP6lJJUqiT/LpKf/ffMpQRwukvJnFGm820aDOFAeUvl0UIcTz5+7FJbneMWIb/dVY+9NXI+Ut5XKY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714764574; c=relaxed/simple; bh=Uewv3sKY6afzrItZD7bE6VQgKvSwhlejog6zAPeUt/4=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=VSstPQ7wdA4AM6iFcBt8JhKx/g+bumKIx8YhqZk1qrf0jsoJQi0LZBUavbEpu93TrWgoTdYKybAYRPhwEkR+15jtzQLLGXQgOftgOLMrbDQq+AHsdcuDnsQv30WQ3Nws1LeH1FSFQwltJs1KZNdQrp4Susno3U1wHpcvZECxOXM= 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=MQhgFrjp; arc=none smtp.client-ip=95.215.58.187 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="MQhgFrjp" 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=1714764569; 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=iUCfelyDQR7NwCOZaWX8ASl/1Ini/iPPBj8R9Vt6ybs=; b=MQhgFrjpk+EZ3O9deS9HezRuXkIATCAD7VU0drh/fheHoLEiEFrtdpTedu7h68oIDZiVOL ius4U2eUybf7aUGKtdcm/FOqMk1nIbEUaFQKUD5I18d/NNB5aj+I9euYQm5bBLlUCnzccT mvXqG2C9wZraGXfRKEzGFjfSk1o3azg= From: Sean Anderson To: Laurent Pinchart , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , dri-devel@lists.freedesktop.org Cc: linux-arm-kernel@lists.infradead.org, David Airlie , linux-kernel@vger.kernel.org, Daniel Vetter , Tomi Valkeinen , Michal Simek , Sean Anderson Subject: [PATCH v5 00/10] drm: zynqmp_dp: IRQ cleanups and debugfs support Date: Fri, 3 May 2024 15:29:12 -0400 Message-Id: <20240503192922.2172314-1-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 v5: - Fix AUX bus not getting unregistered - Rebase onto drm-misc/drm-misc-next Changes in v4: - Rebase onto drm/drm-next Changes in v3: - 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: - 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 (10): drm: zynqmp_kms: Fix AUX bus not getting unregistered 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_dp.c | 883 +++++++++++++++++++++++++++--- drivers/gpu/drm/xlnx/zynqmp_kms.c | 12 +- 5 files changed, 977 insertions(+), 69 deletions(-) create mode 100644 Documentation/gpu/zynqmp.rst -- 2.35.1.1320.gc452695387.dirty