From patchwork Tue Jul 7 21:31:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Poirier X-Patchwork-Id: 11650325 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 A17D9913 for ; Tue, 7 Jul 2020 21:31:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8762620773 for ; Tue, 7 Jul 2020 21:31:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="ey7CtPdA" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729355AbgGGVb3 (ORCPT ); Tue, 7 Jul 2020 17:31:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33582 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729351AbgGGVb2 (ORCPT ); Tue, 7 Jul 2020 17:31:28 -0400 Received: from mail-pj1-x1043.google.com (mail-pj1-x1043.google.com [IPv6:2607:f8b0:4864:20::1043]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3CA23C061755 for ; Tue, 7 Jul 2020 14:31:28 -0700 (PDT) Received: by mail-pj1-x1043.google.com with SMTP id t15so227502pjq.5 for ; Tue, 07 Jul 2020 14:31:28 -0700 (PDT) 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 :mime-version:content-transfer-encoding; bh=vHRO/0KjGNxIcLdu4Nprxq06C5XRM7DNFyiZUQDkaSQ=; b=ey7CtPdAXBygQ5ue7SuxHQa8Oatdp7d/GiJ6UliPUKy1Vxnu6d7REZvKf42X4XJrc+ gY9p8DUab2i02whZGWnlgg7cj4kHgZ8572tSvVo7eqlourW1R7v6EL3PcWDYQKgR1WsV PvV3BudNIq71bKku0JFVw6kjNUGKaPlzT3x5F5M6xzYnU8fOV1EXn36ARjOxE9dC2uQH sCxFKe0sfIs03HaokbWOaXYGsIJDDGoRVZgufD3TwVZQNJxzIMdprZmjndWJsKqx7wyg aDqN8xfSO50Kml6C3gTqgdIBucz3N9b4iQB8NeNk14+i+PTtMBYpaKkY0k5yoclOjuRM jDCA== 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:mime-version:content-transfer-encoding; bh=vHRO/0KjGNxIcLdu4Nprxq06C5XRM7DNFyiZUQDkaSQ=; b=ef2vBe07EHSBlcjF/E27/HRMdH+iq4Awj9plIv0/Cqi12GhrTDFjeWAoNi/vC/dVKk 78Mc7tmh3glgKolSqZbo7hyiZmStACnDSi9b9UC5gruZoYgOrQCfgqcAaE6i1IwvUUD3 wJRvnML1aOJ1pa8cGrb+FZ7soBbpNrQEg/O4KVf0C8aFO0JYv6EzB6s4ZMcq3sRy4GGl EiEXrNWphBhTzfDkLezfJn+LI0dkbooRHBfhmupehOmVrYoCA4TK0jiWKGw5H75xPkxY idjEUlo1XlNWbSvgCJY3KlT/b+WG4mhN8OukehuJAyyIm0ymoKSenQBb7JfklBWaLaSI ZT6Q== X-Gm-Message-State: AOAM531mmkqXglSPTeGpK0q5U6SZh0UaN1k/IZ972EiDYG8Qhv/tJKU2 0MBMS2lb2aeki5LVwsbJQsyEtw== X-Google-Smtp-Source: ABdhPJwYd2Jg2XN/sDXvOil97+lxOhcMuirGZInRZuWanbK+jPdSPTrtzm7fd4Zhai9XJwwp1UAigA== X-Received: by 2002:a17:902:507:: with SMTP id 7mr46010520plf.186.1594157487779; Tue, 07 Jul 2020 14:31:27 -0700 (PDT) Received: from xps15.cg.shawcable.net (S0106002369de4dac.cg.shawcable.net. [68.147.8.254]) by smtp.gmail.com with ESMTPSA id o128sm23560832pfg.127.2020.07.07.14.31.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Jul 2020 14:31:27 -0700 (PDT) From: Mathieu Poirier To: ohad@wizery.com, bjorn.andersson@linaro.org, loic.pallardy@st.com, arnaud.pouliquen@st.com, mcoquelin.stm32@gmail.com, alexandre.torgue@st.com Cc: linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com Subject: [PATCH v5 11/11] remoteproc: stm32: Update M4 state in stm32_rproc_stop() Date: Tue, 7 Jul 2020 15:31:12 -0600 Message-Id: <20200707213112.928383-12-mathieu.poirier@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200707213112.928383-1-mathieu.poirier@linaro.org> References: <20200707213112.928383-1-mathieu.poirier@linaro.org> MIME-Version: 1.0 Sender: linux-remoteproc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org Update the co-processor state in function stm32_rproc_stop() so that it can be used in scenarios where the remoteproc core is attaching to the M4. Mainly based on the work published by Arnaud Pouliquen [1]. [1]. https://patchwork.kernel.org/project/linux-remoteproc/list/?series=239877 Signed-off-by: Mathieu Poirier Reviewed-by: Arnaud Pouliquen --- drivers/remoteproc/stm32_rproc.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/remoteproc/stm32_rproc.c b/drivers/remoteproc/stm32_rproc.c index 7145cd49616e..f4da42fc0eeb 100644 --- a/drivers/remoteproc/stm32_rproc.c +++ b/drivers/remoteproc/stm32_rproc.c @@ -504,6 +504,18 @@ static int stm32_rproc_stop(struct rproc *rproc) } } + /* update coprocessor state to OFF if available */ + if (ddata->m4_state.map) { + err = regmap_update_bits(ddata->m4_state.map, + ddata->m4_state.reg, + ddata->m4_state.mask, + M4_STATE_OFF); + if (err) { + dev_err(&rproc->dev, "failed to set copro state\n"); + return err; + } + } + return 0; }