From patchwork Thu Oct 24 06:49:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?Q3PDs2vDoXMsIEJlbmNl?= X-Patchwork-Id: 13848385 Received: from fw2.prolan.hu (fw2.prolan.hu [193.68.50.107]) (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 3CBC7175D50; Thu, 24 Oct 2024 06:50:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.68.50.107 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729752662; cv=none; b=Kq1EGevZemEf70ceGglzyleAnL6lYciGvX5miKkHO8UM3EQeYo46qcvPqI1RhooEU4byAFcKoLtbww/yLjoCDH01D0HHuDC3dyNmp0TJQ2mSC3GiIMg46r4EbSKTJ9T7zUcEk1bC6L/GUWFjdOo9r21gqumVHXp/buLtiCnTjMw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729752662; c=relaxed/simple; bh=OfqqZUFbF5ur/gCAQtvYoTBdw4wYk5M2eXPxex2njbk=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=rbD8h8ujm8scB9HiLrNtRWC4zyhVWXvmX59l/lXa4z69ZQO/jiJSaAUa2Gqn2HYBE3iy0QzY64GNcOrKZka4CFAokrCzGWjfP1au9Nhbu8vQdXvmFlp3dI6aLvqtbfFzcRVPjGX2RRM1FXXamGMeGAafaYbh84iaPKMIEIPzllM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=prolan.hu; spf=pass smtp.mailfrom=prolan.hu; dkim=pass (4096-bit key) header.d=prolan.hu header.i=@prolan.hu header.b=Bl5t6sXl; arc=none smtp.client-ip=193.68.50.107 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=prolan.hu Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=prolan.hu Authentication-Results: smtp.subspace.kernel.org; dkim=pass (4096-bit key) header.d=prolan.hu header.i=@prolan.hu header.b="Bl5t6sXl" Received: from proxmox-mailgw.intranet.prolan.hu (localhost.localdomain [127.0.0.1]) by proxmox-mailgw.intranet.prolan.hu (Proxmox) with ESMTP id 47074A0642; Thu, 24 Oct 2024 08:50:51 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=prolan.hu; h=cc :cc:content-transfer-encoding:content-type:content-type:date :from:from:in-reply-to:message-id:mime-version:references :reply-to:subject:subject:to:to; s=mail; bh=oEkMkOoeysYlj2KcLEx7 PgbymfxkS+ZogQhGsMWtRJg=; b=Bl5t6sXlV7X7dFZwUX7P84yQLLobWyw7Phyu nSrBStmsWPT3XVu1X/e3SQQcSNCwni+VYLTYRx0VqE9vb5mHbTVOBDw9MWGeo1+H eShqSzLPp8JIf9rSONfy5rMnz5PpviAoNab/1JGqPQiIpCWzMUsg/Qx/UOCRWDlO cc7yBgoA4FKpNJX5FK7YXtszRsUiBoZt35nRdYI9JWfSFlFhQl1Q4rNu5HJ95QsH es7ToRb1//C48ozqxsqGQzLftikhVmd3YM44GsFPYmlIBZVnafjobrTBWhwO27HG fg01OM9FZTuBldilzijhWw5Rh+wXHcYx6hQtrd/OogQGBeQDQ9L+S7D3KvYBkz5x YAhQ8XiYptVXqGDmquyoroWqkQWcC03U13FVWakAm7NFOsvzgQjYWTcPeQ9govol q5L6dJ2iwrLOF65uPr7jzkPXhpic1YS3AWbNpvNnLTItsV2SYJJSASDNEjuuUW94 VCNL3XjyFz24X41tJ1pXgCPAKZ7F9Xlm3Ts7fCbkEVE6Nk2kqOeGqrEJg7Udej0s wru7pNVPI1CJJ0XcZxRM5pKYH3GME9njP0ROuKcZLwMZrk8a7F5iY81j/a07/UbY F1zBSa8IaVHuHoYdwA/cEKvID8TynioDTcIrtp0vJRZ8v8v+PkXxyn5PRXcPHb7L 2402iN0= From: =?utf-8?b?Q3PDs2vDoXMsIEJlbmNl?= To: , , , CC: Mesih Kilinc , Vinod Koul , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Philipp Zabel Subject: [PATCH 02/10] dma-engine: sun4i: Add has_reset option to quirk Date: Thu, 24 Oct 2024 08:49:23 +0200 Message-ID: <20241024064931.1144605-3-csokas.bence@prolan.hu> X-Mailer: git-send-email 2.34.1 In-Reply-To: <13ab5cec-25e5-4e82-b956-5c154641d7ab@prolan.hu> References: Precedence: bulk X-Mailing-List: dmaengine@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ESET-AS: R=OK;S=0;OP=CALC;TIME=1729752650;VERSION=7978;MC=1474290725;ID=135549;TRN=0;CRV=0;IPC=;SP=0;SIPS=0;PI=3;F=0 X-ESET-Antispam: OK X-EsetResult: clean, is OK X-EsetId: 37303A29ACD94855677065 From: Mesih Kilinc Allwinner suniv F1C100s has a reset bit for DMA in CCU. Sun4i do not has this bit but in order to support suniv we need to add it. So add support for reset bit. Signed-off-by: Mesih Kilinc --- drivers/dma/sun4i-dma.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/dma/sun4i-dma.c b/drivers/dma/sun4i-dma.c index 5efbed7c546f..0b99b3884971 100644 --- a/drivers/dma/sun4i-dma.c +++ b/drivers/dma/sun4i-dma.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -159,6 +160,7 @@ struct sun4i_dma_config { u8 ddma_drq_sdram; u8 max_burst; + bool has_reset; }; struct sun4i_dma_pchan { @@ -208,6 +210,7 @@ struct sun4i_dma_dev { int irq; spinlock_t lock; const struct sun4i_dma_config *cfg; + struct reset_control *rst; }; static struct sun4i_dma_dev *to_sun4i_dma_dev(struct dma_device *dev) @@ -1215,6 +1218,15 @@ static int sun4i_dma_probe(struct platform_device *pdev) return PTR_ERR(priv->clk); } + if (priv->cfg->has_reset) { + priv->rst = devm_reset_control_get_exclusive(&pdev->dev, + NULL); + if (IS_ERR(priv->rst)) { + dev_err(&pdev->dev, "Failed to get reset control\n"); + return PTR_ERR(priv->rst); + } + } + platform_set_drvdata(pdev, priv); spin_lock_init(&priv->lock); @@ -1287,6 +1299,16 @@ static int sun4i_dma_probe(struct platform_device *pdev) return ret; } + /* Deassert the reset control */ + if (priv->rst) { + ret = reset_control_deassert(priv->rst); + if (ret) { + dev_err(&pdev->dev, + "Failed to deassert the reset control\n"); + goto err_clk_disable; + } + } + /* * Make sure the IRQs are all disabled and accounted for. The bootloader * likes to leave these dirty @@ -1356,6 +1378,7 @@ static struct sun4i_dma_config sun4i_a10_dma_cfg = { .ddma_drq_sdram = SUN4I_DDMA_DRQ_TYPE_SDRAM, .max_burst = SUN4I_MAX_BURST, + .has_reset = false, }; static const struct of_device_id sun4i_dma_match[] = {