From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 D822884E11; Mon, 8 Jul 2024 14:25:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720448717; cv=none; b=GT3GqDB8VqcmikXCexH3t41NyrW2tWOHfV7JTOA4qKV9pgooQTeagInAvUUTM0SyDDgxamREOKantQ4202WS52sQC+a2HvbwePNpjI5wmmRmGxJscnAdfnhfJOTkMYaVgIBx0PL3/V3sSAmhs6IIQVblFl564MkAJyLF0+3JEvI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720448717; c=relaxed/simple; bh=bLvPuTBIGrWz2AhT90LlzQqz+r5dtp2gOEx6gzloYic=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=LW1W0zPGkdHY6kQ+pRg68FwcTWDvDJlPCApmKtw+NC15F5vroQZeARxzUJC+i7cqqlPjfjBdh7mpRYMZXZzUCMcBFdTDm6sR+1XZDgbaLJ07H167f0L1HXpw1zfrmQtQCfAGs7789Objsmf1dEKBrDup684nw27T3QgwiYovizw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=STaA7sh4; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="STaA7sh4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C8497C4AF0A; Mon, 8 Jul 2024 14:25:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1720448716; bh=bLvPuTBIGrWz2AhT90LlzQqz+r5dtp2gOEx6gzloYic=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=STaA7sh4i/DdE0wKbYHbM7EKVKizmwv/GNoB3JyFHHzRq+0hEKrMegfUt0yrL3CuE 2Rb1fZoCVxsflHjt66TLF6hertZlVx/oosH9CjEnwtFiDoUx2tvsLpLpQBHvByRPsQ TEgFaR1aANyOcIWFozuhJEgAqXDkW+Lv1kDJcyx+6BeGIdhMYGJozjcmJqwqb0eNq5 /cUQg6Otmd2X0G8mabwU96tx+2j9D/Fgpf4D6Ydx1ChxPdPkJCunoLL18whG/mQpwq 2S50gkKZBV41h4qlPlQDO70vLg8AmGJQ+SjXctxcfzTCvnKb83PMtQM8p0QdJgmYYb n7P2KkoC5iNow== Message-ID: <30cb5871-71f1-4b62-91fc-489519125bc2@kernel.org> Date: Mon, 8 Jul 2024 16:25:09 +0200 Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 2/2] mmc: sdhci-of-ma35d1: Add Nuvoton MA35D1 SDHCI driver To: Shan-Chun Hung , ulf.hansson@linaro.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, adrian.hunter@intel.com, p.zabel@pengutronix.de, pbrobinson@gmail.com, serghox@gmail.com, mcgrof@kernel.org, prabhakar.mahadev-lad.rj@bp.renesas.com, forbidden405@outlook.com, tmaimon77@gmail.com, andy.shevchenko@gmail.com, linux-arm-kernel@lists.infradead.org, linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: ychuang3@nuvoton.com, schung@nuvoton.com References: <20240704062623.1480062-1-shanchun1218@gmail.com> <20240704062623.1480062-3-shanchun1218@gmail.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 04/07/2024 08:26, Shan-Chun Hung wrote: > Add the SDHCI driver for the MA35D1 platform. It is based upon the > SDHCI interface, but requires some extra initialization. > > Signed-off-by: Shan-Chun Hung > --- > drivers/mmc/host/Kconfig | 12 ++ > drivers/mmc/host/Makefile | 1 + > drivers/mmc/host/sdhci-of-ma35d1.c | 297 +++++++++++++++++++++++++++++ > 3 files changed, 310 insertions(+) > create mode 100644 drivers/mmc/host/sdhci-of-ma35d1.c > > diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig > index bb0d4fb0892a..aa6922ff4210 100644 > --- a/drivers/mmc/host/Kconfig > +++ b/drivers/mmc/host/Kconfig > @@ -252,6 +252,18 @@ config MMC_SDHCI_OF_SPARX5 > > If unsure, say N. > > +config MMC_SDHCI_OF_MA35D1 > + tristate "SDHCI OF support for the MA35D1 SDHCI controller" > + depends on ARCH_MA35 || COMPILE_TEST > + depends on MMC_SDHCI_PLTFM > + help > + This selects the MA35D1 Secure Digital Host Controller Interface. > + The controller supports SD/MMC/SDIO devices. > + > + If you have a controller with this interface, say Y or M here. > + > + If unsure, say N. > + > config MMC_SDHCI_CADENCE > tristate "SDHCI support for the Cadence SD/SDIO/eMMC controller" > depends on MMC_SDHCI_PLTFM > diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile > index f53f86d200ac..3ccffebbe59b 100644 > --- a/drivers/mmc/host/Makefile > +++ b/drivers/mmc/host/Makefile > @@ -88,6 +88,7 @@ obj-$(CONFIG_MMC_SDHCI_OF_ESDHC) += sdhci-of-esdhc.o > obj-$(CONFIG_MMC_SDHCI_OF_HLWD) += sdhci-of-hlwd.o > obj-$(CONFIG_MMC_SDHCI_OF_DWCMSHC) += sdhci-of-dwcmshc.o > obj-$(CONFIG_MMC_SDHCI_OF_SPARX5) += sdhci-of-sparx5.o > +obj-$(CONFIG_MMC_SDHCI_OF_MA35D1) += sdhci-of-ma35d1.o > obj-$(CONFIG_MMC_SDHCI_BCM_KONA) += sdhci-bcm-kona.o > obj-$(CONFIG_MMC_SDHCI_IPROC) += sdhci-iproc.o > obj-$(CONFIG_MMC_SDHCI_NPCM) += sdhci-npcm.o > diff --git a/drivers/mmc/host/sdhci-of-ma35d1.c b/drivers/mmc/host/sdhci-of-ma35d1.c > new file mode 100644 > index 000000000000..b5aab65b9093 > --- /dev/null > +++ b/drivers/mmc/host/sdhci-of-ma35d1.c > @@ -0,0 +1,297 @@ > +// SPDX-License-Identifier: GPL-2.0+ > +/* > + * Copyright (C) 2024 Nuvoton Technology Corp. > + * > + * Author: Shan-Chun Hung > + */ > + > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > + > +#include "sdhci-pltfm.h" > +#include "sdhci.h" > + > +#define MA35_SYS_MISCFCR0 0x070 > +#define MA35_SDHCI_MSHCCTL 0x508 > +#define MA35_SDHCI_MBIUCTL 0x510 > + > +#define MA35_SDHCI_CMD_CONFLICT_CHK BIT(0) > +#define MA35_SDHCI_INCR_MSK GENMASK(3, 0) > +#define MA35_SDHCI_INCR16 BIT(3) > +#define MA35_SDHCI_INCR8 BIT(2) > + > +struct ma35_priv { > + struct regmap *regmap; Drop, you don't use it. > + struct reset_control *rst; > + struct pinctrl *pinctrl; > + struct pinctrl_state *pins_uhs; > + struct pinctrl_state *pins_default; > +}; > + > +struct ma35_restore_data { > + u32 reg; > + u32 width; > +}; > + ... > + > +static int ma35_probe(struct platform_device *pdev) > +{ > + struct device *dev = &pdev->dev; > + struct sdhci_pltfm_host *pltfm_host; > + struct sdhci_host *host; > + struct ma35_priv *priv; > + int err; > + u32 extra, ctl; > + > + host = sdhci_pltfm_init(pdev, &sdhci_ma35_pdata, sizeof(struct ma35_priv)); > + if (IS_ERR(host)) > + return PTR_ERR(host); > + > + /* Extra adma table cnt for cross 128M boundary handling. */ > + extra = DIV_ROUND_UP_ULL(dma_get_required_mask(dev), SZ_128M); > + extra = min(extra, SDHCI_MAX_SEGS); > + > + host->adma_table_cnt += extra; > + pltfm_host = sdhci_priv(host); > + priv = sdhci_pltfm_priv(pltfm_host); > + > + pltfm_host->clk = devm_clk_get_optional_enabled(dev, NULL); > + if (IS_ERR(pltfm_host->clk)) { > + err = PTR_ERR(pltfm_host->clk); > + dev_err_probe(dev, err, "failed to get clk\n"); Syntax is err = dev_err_probe() > + goto err_sdhci; > + } > + > + err = mmc_of_parse(host->mmc); > + if (err) > + goto err_sdhci; > + > + priv->rst = devm_reset_control_get_exclusive(dev, NULL); > + if (IS_ERR(priv->rst)) { > + err = PTR_ERR(priv->rst); > + dev_err_probe(dev, err, "failed to get reset control\n"); err = dev_err_probe ... so all your previous versions were leaking memory. Double check your error paths. > + goto err_sdhci; > + } > + > + sdhci_get_of_property(pdev); > + Best regards, Krzysztof