From patchwork Mon Jun 1 17:55:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Poirier X-Patchwork-Id: 11582453 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 97299159A for ; Mon, 1 Jun 2020 17:56:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7F9C52086A for ; Mon, 1 Jun 2020 17:56:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="jDpwCbFH" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728507AbgFAR4K (ORCPT ); Mon, 1 Jun 2020 13:56:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35864 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728500AbgFAR4J (ORCPT ); Mon, 1 Jun 2020 13:56:09 -0400 Received: from mail-pl1-x644.google.com (mail-pl1-x644.google.com [IPv6:2607:f8b0:4864:20::644]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DB89AC05BD43 for ; Mon, 1 Jun 2020 10:56:08 -0700 (PDT) Received: by mail-pl1-x644.google.com with SMTP id q16so261137plr.2 for ; Mon, 01 Jun 2020 10:56:08 -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=u4RFNd9FFVlTeJLx02SSeMMgnm0C5Ocm0tA+r0cHo1Y=; b=jDpwCbFHHHOdFSOjq6a7d0+Jeda1zij/0s2YyarOhbL1q9jo+DgjNl/BLDo6Qai070 2WLbe7LDYhcsR6Al9tIXcUq1hjSNSkJ5b37HvFu9BL8DAe3zZ4z6jWGtsBOh2laDL+VM IgVYA3Iv8FKeM1mbOVzl5grl6P2IqcPgjEioI8VvPUiDEJQ+s5y90Ie9Llm9B/aJnsaU 1hJvyLWdtmO4dmDCoEE3OeIZsDrXfT+6CtGYWf0Ggvlf2vTy+KrKvrZ8VY1hoTFyQSkm rHd7p4AW41iHcMeRgg5GQN+kpaRrhnsrW+1K29gPT5lgGZ3DvVXMWW5RjsknN+xU8GPN uZNQ== 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=u4RFNd9FFVlTeJLx02SSeMMgnm0C5Ocm0tA+r0cHo1Y=; b=luBVkt4sufwplLAUxb32y6/qIqDm2SbfS/sUHUKfGPAiRrd1EJR32Snytg23t3IHE/ Umfsg4W2Nz3zaYADTPjikmrqgImxGpJixVhY0HadF2jyQL4DYD/6w/K3ijT6MixN7uam WOvYVaKWV9c0bOSqKbHztUxdUYec/MxEn0PW3qVKA+vtmG8imOBovL4P+a98X6LKfiV6 5TLQWylrwIoOapJbiPFXJ918ruwnjAymTuuHUxWFv6/fHLd6iSTJhrwPr15mr/DwPOxV GkXlyy7HNCTsI7OkHaFJf9L/L+++Liar+B+LsqX5qB4XdD+kXuwz+NY0ipS6DaII90TT keDw== X-Gm-Message-State: AOAM532BMZ33C423WzhL2wpYlLF3y6jXVjiBYQ44RSXv+AzqczyXw8fp zMROkoh8WBIr8gxqlBSqZY40AQ== X-Google-Smtp-Source: ABdhPJyPL4cWZZg61WZPJde8LyrsdhiEW14iaC+dVSSpI6qDWDL94WZSK2PfRnxce1jBtWI4z5ay6w== X-Received: by 2002:a17:902:8d83:: with SMTP id v3mr4455323plo.27.1591034168449; Mon, 01 Jun 2020 10:56:08 -0700 (PDT) Received: from xps15.cg.shawcable.net (S0106002369de4dac.cg.shawcable.net. [68.147.8.254]) by smtp.gmail.com with ESMTPSA id p7sm64771pfq.184.2020.06.01.10.56.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Jun 2020 10:56:08 -0700 (PDT) From: Mathieu Poirier To: bjorn.andersson@linaro.org, ohad@wizery.com, mcoquelin.stm32@gmail.com, alexandre.torgue@st.com Cc: loic.pallardy@st.com, arnaud.pouliquen@st.com, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 11/11] remoteproc: stm32: Update M4 state in stm32_rproc_stop() Date: Mon, 1 Jun 2020 11:55:52 -0600 Message-Id: <20200601175552.22286-12-mathieu.poirier@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200601175552.22286-1-mathieu.poirier@linaro.org> References: <20200601175552.22286-1-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 77a20a638e0c..ad0307aaf3d5 100644 --- a/drivers/remoteproc/stm32_rproc.c +++ b/drivers/remoteproc/stm32_rproc.c @@ -503,6 +503,18 @@ 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; }