From patchwork Tue Jun 11 07:39:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnaud POULIQUEN X-Patchwork-Id: 13693191 Received: from mx07-00178001.pphosted.com (mx07-00178001.pphosted.com [185.132.182.106]) (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 22A81172BB4; Tue, 11 Jun 2024 07:40:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.132.182.106 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718091628; cv=none; b=thSXBlWyd0CIxmDkX2etvrKEiLjIAh8VrUvTBL0IRWwOVwH0IwpU6rDTpynlX0EIz+LcM2+HvxFjpZ2p+MRGOEwBw500789jVimY3LQRSaVDh0PYZM+vG+yCVs9rQ/Yibp3tjUNAQRZ2Lxorfc9GYXdL/23oWKGFPrEggmfgCOU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718091628; c=relaxed/simple; bh=W9OC2fUk3FD1xhnbtvYwKD+7Xd1c9IdLOs7cBPZSL7o=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=YCank4n/IoWe7Th1O5XCSVicwPy1Wj0f2kphpvBYD+kioKQhQzmr4QZFbCW6TS7voIp3OWlNr0sa9Yp45I7mRqIs5JmcdJSAjmkl4FeMryPDGbgxvBy8fkyvVZ5doqUTeaEoDbEZf1rLNADXPxg03W+fkgDu621Z4BiPn3tmtSk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foss.st.com; spf=pass smtp.mailfrom=foss.st.com; dkim=pass (2048-bit key) header.d=foss.st.com header.i=@foss.st.com header.b=YBIt2chk; arc=none smtp.client-ip=185.132.182.106 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foss.st.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=foss.st.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=foss.st.com header.i=@foss.st.com header.b="YBIt2chk" Received: from pps.filterd (m0288072.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 45B01NDf017612; Tue, 11 Jun 2024 09:40:02 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=selector1; bh= luA+ZUFTcJknApwisPNPdZman1Wn25gDMX3CVQ3XRQs=; b=YBIt2chkhmySLi/y z/lKtEAyyPxtDFME4Lk2fs7zR9C2naV1Sf8WBLxgah2OuRiUmK0Ckfe43hYioF8Q QvCppLQoQmFspvy6v5UDhcLNQJKmYu95eTqMbXNEKJgzas5Mmsb9NqgC47h0/swQ O0nMmWW8/VAF6ZUJ3Buomi0Dy+Xo1113sahPbhFCKx0ymYN1GREh06TSafnNH5P2 f8Ak/osOqgHXtK93zaNP089RWScM+mYa+0Ka5KzrLHxeRoArLsDEJRfUfN5q8KA9 zdOgwQoLQ5tmc6TaKXCf/oxHUJCspjhW3kj3LpWFAdbt58ZiTsR0nJyghmP+YhZ1 kom9zw== Received: from beta.dmz-ap.st.com (beta.dmz-ap.st.com [138.198.100.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3ypbp2hgcc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 11 Jun 2024 09:40:02 +0200 (MEST) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-ap.st.com (STMicroelectronics) with ESMTP id D74B740045; Tue, 11 Jun 2024 09:39:57 +0200 (CEST) Received: from Webmail-eu.st.com (eqndag1node4.st.com [10.75.129.133]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 109AD20F574; Tue, 11 Jun 2024 09:39:12 +0200 (CEST) Received: from SAFDAG1NODE1.st.com (10.75.90.17) by EQNDAG1NODE4.st.com (10.75.129.133) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Tue, 11 Jun 2024 09:39:11 +0200 Received: from localhost (10.48.86.121) by SAFDAG1NODE1.st.com (10.75.90.17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Tue, 11 Jun 2024 09:39:11 +0200 From: Arnaud Pouliquen To: Bjorn Andersson , Mathieu Poirier , Jens Wiklander , "Rob Herring" , Krzysztof Kozlowski , Conor Dooley CC: , , , , , , Arnaud Pouliquen Subject: [PATCH v7 4/5] remoteproc: stm32: Create sub-functions to request shutdown and release Date: Tue, 11 Jun 2024 09:39:03 +0200 Message-ID: <20240611073904.475019-5-arnaud.pouliquen@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240611073904.475019-1-arnaud.pouliquen@foss.st.com> References: <20240611073904.475019-1-arnaud.pouliquen@foss.st.com> Precedence: bulk X-Mailing-List: linux-remoteproc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: SAFCAS1NODE1.st.com (10.75.90.11) To SAFDAG1NODE1.st.com (10.75.90.17) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-06-11_03,2024-06-11_01,2024-05-17_01 To prepare for the support of TEE remoteproc, create sub-functions that can be used in both cases, with and without remoteproc TEE support. Signed-off-by: Arnaud Pouliquen --- drivers/remoteproc/stm32_rproc.c | 84 +++++++++++++++++++------------- 1 file changed, 51 insertions(+), 33 deletions(-) diff --git a/drivers/remoteproc/stm32_rproc.c b/drivers/remoteproc/stm32_rproc.c index 88623df7d0c3..8cd838df4e92 100644 --- a/drivers/remoteproc/stm32_rproc.c +++ b/drivers/remoteproc/stm32_rproc.c @@ -209,6 +209,54 @@ static int stm32_rproc_mbox_idx(struct rproc *rproc, const unsigned char *name) return -EINVAL; } +static void stm32_rproc_request_shutdown(struct rproc *rproc) +{ + struct stm32_rproc *ddata = rproc->priv; + int err, dummy_data, idx; + + /* Request shutdown of the remote processor */ + if (rproc->state != RPROC_OFFLINE && rproc->state != RPROC_CRASHED) { + idx = stm32_rproc_mbox_idx(rproc, STM32_MBX_SHUTDOWN); + if (idx >= 0 && ddata->mb[idx].chan) { + /* A dummy data is sent to allow to block on transmit. */ + err = mbox_send_message(ddata->mb[idx].chan, + &dummy_data); + if (err < 0) + dev_warn(&rproc->dev, "warning: remote FW shutdown without ack\n"); + } + } +} + +static int stm32_rproc_release(struct rproc *rproc) +{ + struct stm32_rproc *ddata = rproc->priv; + unsigned int err = 0; + + /* To allow platform Standby power mode, set remote proc Deep Sleep. */ + if (ddata->pdds.map) { + err = regmap_update_bits(ddata->pdds.map, ddata->pdds.reg, + ddata->pdds.mask, 1); + if (err) { + dev_err(&rproc->dev, "failed to set pdds\n"); + return err; + } + } + + /* 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; +} + static int stm32_rproc_prepare(struct rproc *rproc) { struct device *dev = rproc->dev.parent; @@ -519,17 +567,9 @@ static int stm32_rproc_detach(struct rproc *rproc) static int stm32_rproc_stop(struct rproc *rproc) { struct stm32_rproc *ddata = rproc->priv; - int err, idx; + int err; - /* request shutdown of the remote processor */ - if (rproc->state != RPROC_OFFLINE && rproc->state != RPROC_CRASHED) { - idx = stm32_rproc_mbox_idx(rproc, STM32_MBX_SHUTDOWN); - if (idx >= 0 && ddata->mb[idx].chan) { - err = mbox_send_message(ddata->mb[idx].chan, "detach"); - if (err < 0) - dev_warn(&rproc->dev, "warning: remote FW shutdown without ack\n"); - } - } + stm32_rproc_request_shutdown(rproc); err = stm32_rproc_set_hold_boot(rproc, true); if (err) @@ -541,29 +581,7 @@ static int stm32_rproc_stop(struct rproc *rproc) return err; } - /* to allow platform Standby power mode, set remote proc Deep Sleep */ - if (ddata->pdds.map) { - err = regmap_update_bits(ddata->pdds.map, ddata->pdds.reg, - ddata->pdds.mask, 1); - if (err) { - dev_err(&rproc->dev, "failed to set pdds\n"); - return err; - } - } - - /* 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; + return stm32_rproc_release(rproc); } static void stm32_rproc_kick(struct rproc *rproc, int vqid)