From patchwork Mon Jan 13 21:31:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Leach X-Patchwork-Id: 11330937 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 55865138D for ; Mon, 13 Jan 2020 21:32:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 29A2F2187F for ; Mon, 13 Jan 2020 21:32:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="IQ9eJEYn" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728862AbgAMVca (ORCPT ); Mon, 13 Jan 2020 16:32:30 -0500 Received: from mail-wm1-f68.google.com ([209.85.128.68]:54578 "EHLO mail-wm1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728863AbgAMVca (ORCPT ); Mon, 13 Jan 2020 16:32:30 -0500 Received: by mail-wm1-f68.google.com with SMTP id b19so11449956wmj.4 for ; Mon, 13 Jan 2020 13:32:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=K/OQ1Jgex7gK828pBxgz7p1Ugpl7TPPOgqjJJN6erjc=; b=IQ9eJEYnYg6INyjzbf2feUbm7FyLEMAZmE8+4Xzo/LYdXQlYekNzFEjWLT2Lo2hbhQ 4RweeDtroHUfWQ/qlnqNC3rRJ1t1ZSeqNZ61DwppAsLDSWBEMb0F1YciFz/Y98gg8gKI L+DLHRfEQuk/xtSpbHFAgeh8PIu4YiiOxmvYpuajFJcDoAWXRekjQtbRlEeeOFX5A/lw sNS1EuLwlasb668TDzWNbMB558lcurWhUczlq3Ca8b92Jcv1lyBa83m1uQJw8WAXT6/f BZbcNiQI0wnU/pG5exoG/k/oUnoLq6LIhppkPub7pgaQ2N0jMwe/USeCoUhci5q6Tc+i pljA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=K/OQ1Jgex7gK828pBxgz7p1Ugpl7TPPOgqjJJN6erjc=; b=Vy5mVUb2TT564bgsrM4BPleMLJ3XLGfXTbvrqLS6aizpR4t3D5wIn9a1FFVYHR0MvE X0N/WRjufg20EZhXFp9L2cXL4oDyMN/LX8traEPwZtLdqQUATruzzN8cAAaHXrqjJNYi Z6g0en6fWpjt/UmGWRSxS6lGRysJ5Ryi2MR6rA3CstNGkSy+0MgkVXQ2drVn50vmz+rH xDq/qoM9sjxHehFnuTd/v7xLZZc8i6LSToMcbBvHK2a0SipdjQHAvww9ii/+knYuqwOu NpvItBjFlXDCmM1Yx4MN61R+V96SehYrwZpgeVd8dAeNhiy4/dbZpOKrX1p867uXoQeE EkCQ== X-Gm-Message-State: APjAAAWbMVEjEWgy36ecrH7DSEEs1w2jG4xJnw7YLO0LMfADugFxBAxR 8ulfzFd+FRY14r/mqLC0rfukog== X-Google-Smtp-Source: APXvYqyGV104T9sy7oILp++NPgAOHbCmIaLHg6zBPJSWON3n87EvUpq2Y4QXK7EiDTMokfZRQ4vM1g== X-Received: by 2002:a1c:f003:: with SMTP id a3mr21218770wmb.41.1578951147369; Mon, 13 Jan 2020 13:32:27 -0800 (PST) Received: from linaro.org ([2a00:23c5:6815:3901:a1cf:b00b:5683:ed40]) by smtp.gmail.com with ESMTPSA id j12sm16725120wrt.55.2020.01.13.13.32.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Jan 2020 13:32:26 -0800 (PST) From: Mike Leach To: mike.leach@linaro.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, coresight@lists.linaro.org, linux-doc@vger.kernel.org Cc: linux-arm-msm@vger.kernel.org, mathieu.poirier@linaro.org, suzuki.poulose@arm.com, robh+dt@kernel.org, maxime@cerno.tech, liviu.dudau@arm.com, sudeep.holla@arm.com, lorenzo.pieralisi@arm.com, agross@kernel.org, corbet@lwn.net Subject: [PATCH v8 14/15] docs: sysfs: coresight: Add sysfs ABI documentation for CTI Date: Mon, 13 Jan 2020 21:31:48 +0000 Message-Id: <20200113213149.25599-15-mike.leach@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200113213149.25599-1-mike.leach@linaro.org> References: <20200113213149.25599-1-mike.leach@linaro.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add API usage document for sysfs API in CTI driver. Signed-off-by: Mike Leach --- .../testing/sysfs-bus-coresight-devices-cti | 221 ++++++++++++++++++ 1 file changed, 221 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-coresight-devices-cti diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti b/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti new file mode 100644 index 000000000000..5ed54d196a17 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti @@ -0,0 +1,221 @@ +What: /sys/bus/coresight/devices//enable +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Enable/Disable the CTI hardware. + +What: /sys/bus/coresight/devices//ctmid +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Display the associated CTM ID + +What: /sys/bus/coresight/devices//nr_trigger_cons +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Number of devices connected to triggers on this CTI + +What: /sys/bus/coresight/devices//triggers/name +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Name of connected device + +What: /sys/bus/coresight/devices//triggers/in_signals +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Input trigger signals from connected device + +What: /sys/bus/coresight/devices//triggers/in_types +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Functional types for the input trigger signals + from connected device + +What: /sys/bus/coresight/devices//triggers/out_signals +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Output trigger signals to connected device + +What: /sys/bus/coresight/devices//triggers/out_types +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Functional types for the output trigger signals + to connected device + +What: /sys/bus/coresight/devices//regs/inout_sel +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Select the index for inen and outen registers. + +What: /sys/bus/coresight/devices//regs/inen +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Read or write the CTIINEN register selected by inout_sel. + +What: /sys/bus/coresight/devices//regs/outen +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Read or write the CTIOUTEN register selected by inout_sel. + +What: /sys/bus/coresight/devices//regs/gate +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Read or write CTIGATE register. + +What: /sys/bus/coresight/devices//regs/asicctl +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Read or write ASICCTL register. + +What: /sys/bus/coresight/devices//regs/intack +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Write the INTACK register. + +What: /sys/bus/coresight/devices//regs/appset +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Set CTIAPPSET register to activate channel. Read back to + determine current value of register. + +What: /sys/bus/coresight/devices//regs/appclear +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Write APPCLEAR register to deactivate channel. + +What: /sys/bus/coresight/devices//regs/apppulse +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Write APPPULSE to pulse a channel active for one clock + cycle. + +What: /sys/bus/coresight/devices//regs/chinstatus +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Read current status of channel inputs. + +What: /sys/bus/coresight/devices//regs/choutstatus +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) read current status of channel outputs. + +What: /sys/bus/coresight/devices//regs/triginstatus +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) read current status of input trigger signals + +What: /sys/bus/coresight/devices//regs/trigoutstatus +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) read current status of output trigger signals. + +What: /sys/bus/coresight/devices//channels/trigin_attach +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Attach a CTI input trigger to a CTM channel. + +What: /sys/bus/coresight/devices//channels/trigin_detach +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Detach a CTI input trigger from a CTM channel. + +What: /sys/bus/coresight/devices//channels/trigout_attach +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Attach a CTI output trigger to a CTM channel. + +What: /sys/bus/coresight/devices//channels/trigout_detach +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Detach a CTI output trigger from a CTM channel. + +What: /sys/bus/coresight/devices//channels/chan_gate_enable +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Enable CTIGATE for single channel (W) or list enabled + channels through the gate (R). + +What: /sys/bus/coresight/devices//channels/chan_gate_disable +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Disable CTIGATE for single channel. + +What: /sys/bus/coresight/devices//channels/chan_set +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Activate a single channel. + +What: /sys/bus/coresight/devices//channels/chan_clear +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Deactivate a single channel. + +What: /sys/bus/coresight/devices//channels/chan_pulse +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Pulse a single channel - activate for a single clock cycle. + +What: /sys/bus/coresight/devices//channels/trigout_filtered +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) List of output triggers filtered across all connections. + +What: /sys/bus/coresight/devices//channels/trig_filter_enable +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Enable or disable trigger output signal filtering. + +What: /sys/bus/coresight/devices//channels/chan_inuse +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) show channels with at least one attached trigger signal. + +What: /sys/bus/coresight/devices//channels/chan_free +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) show channels with no attached trigger signals. + +What: /sys/bus/coresight/devices//channels/chan_xtrigs_view +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Write channel number to select a channel to view, read to + see triggers attached to selected channel on this CTI. + +What: /sys/bus/coresight/devices//channels/chan_xtrigs_reset +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Clear all channel / trigger programming.