From patchwork Thu Jun 27 08:12:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 13713932 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5B8B4C2BD09 for ; Thu, 27 Jun 2024 08:13:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=FprofXqTliFEOdwIZyeDG4g1mHPEoLpaW1YrYWDTBNU=; b=P1TDwf8TmjECiUqZnYHt6u/ByS snfVYBFg0F19ZJ1FcsKFPWz4B2FjIN63hevGv/iuTZ/wlUod7GHg7U8b6sMukigVicCOT+UE/O7fZ h0qI0EHGSjS/q6sWDM2p6bNe8JoVDxp78sYmx5DRdaVQjm+qRl2aQ1ZcWOBP/7nw9f7ChBi6w8I5c fNMn8eY0/VDHg7sMtmmBsogUL7nGgIqwY+YF+WEwl5wQpMAfC0/DaPlX3cPyilfajIEPW1mhaKY8R lmV3KNopwo791qxohHx/rhyFxsq0+8MduP64loV2ieTfUdh0M171KOuVHhZe4yf//QJFzfdFSIO6S El8FFOig==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sMkGB-00000009hMh-2KJy; Thu, 27 Jun 2024 08:13:39 +0000 Received: from sin.source.kernel.org ([145.40.73.55]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sMkFg-00000009h52-3aei; Thu, 27 Jun 2024 08:13:10 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id 47A18CE2D7E; Thu, 27 Jun 2024 08:13:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E13FAC2BBFC; Thu, 27 Jun 2024 08:13:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1719475984; bh=3Hj2ISV4US+V2PRLoUb/bQ4f1LIP8icCQKxs67VPFw8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WvhADSzqh2C3NBcnJCoI04uk7m57ZwjmqpYSzJPAQR1dNSgbVI+AUt3Ljnv+WpH7P 1DA32v5NBrRRvAGKFC2VjBS6iN6FI2+oeTS2iR8U82VXXcBYW6u32T6LLqNIKa/zpw Ojze5eNOBz30Uc+TJK5veeM11Zvn6yZLqW/G2HruJDwhDRojnpg5RW16mmi1eg+3KO Yiry5IaKJgSCQTGGWfP28go6UdSipLVqD9iGvteBFvPcvyMO8UYtThMdJgCKjC8To/ qHgtL14rW5kwbbXsMawxgf0dv9F6l69njVbUSCsB3+L7E0X1NCyePnumgV48fiQXLp LAzus2rz4RXew== From: Lorenzo Bianconi To: linux-pci@vger.kernel.org Cc: ryder.lee@mediatek.com, jianjun.wang@mediatek.com, lpieralisi@kernel.org, kw@linux.com, robh@kernel.org, bhelgaas@google.com, linux-mediatek@lists.infradead.org, lorenzo.bianconi83@gmail.com, linux-arm-kernel@lists.infradead.org, krzysztof.kozlowski+dt@linaro.org, devicetree@vger.kernel.org, nbd@nbd.name, dd@embedd.com, upstream@airoha.com, angelogioacchino.delregno@collabora.com Subject: [PATCH v2 2/4] PCI: mediatek-gen3: Add mtk_gen3_pcie_pdata data structure Date: Thu, 27 Jun 2024 10:12:12 +0200 Message-ID: <62c00de24f702260ba0da93008277e95f471a2ab.1719475568.git.lorenzo@kernel.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240627_011309_306173_2C3621C8 X-CRM114-Status: GOOD ( 14.50 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Introduce mtk_gen3_pcie_pdata data structure in order to define multiple callbacks for each supported SoC. This is a preliminary patch to introduce EN7581 PCIe support. Tested-by: Zhengping Zhang Signed-off-by: Lorenzo Bianconi Reviewed-by: AngeloGioacchino Del Regno --- drivers/pci/controller/pcie-mediatek-gen3.c | 24 ++++++++++++++++++--- 1 file changed, 21 insertions(+), 3 deletions(-) diff --git a/drivers/pci/controller/pcie-mediatek-gen3.c b/drivers/pci/controller/pcie-mediatek-gen3.c index 975b3024fb08..db0210803731 100644 --- a/drivers/pci/controller/pcie-mediatek-gen3.c +++ b/drivers/pci/controller/pcie-mediatek-gen3.c @@ -100,6 +100,16 @@ #define PCIE_ATR_TLP_TYPE_MEM PCIE_ATR_TLP_TYPE(0) #define PCIE_ATR_TLP_TYPE_IO PCIE_ATR_TLP_TYPE(2) +struct mtk_gen3_pcie; + +/** + * struct mtk_gen3_pcie_pdata - differentiate between host generations + * @power_up: pcie power_up callback + */ +struct mtk_gen3_pcie_pdata { + int (*power_up)(struct mtk_gen3_pcie *pcie); +}; + /** * struct mtk_msi_set - MSI information for each set * @base: IO mapped register base @@ -131,6 +141,7 @@ struct mtk_msi_set { * @msi_sets: MSI sets information * @lock: lock protecting IRQ bit map * @msi_irq_in_use: bit map for assigned MSI IRQ + * @soc: pointer to SoC-dependent operations */ struct mtk_gen3_pcie { struct device *dev; @@ -151,6 +162,8 @@ struct mtk_gen3_pcie { struct mtk_msi_set msi_sets[PCIE_MSI_SET_NUM]; struct mutex lock; DECLARE_BITMAP(msi_irq_in_use, PCIE_MSI_IRQS_NUM); + + const struct mtk_gen3_pcie_pdata *soc; }; /* LTSSM state in PCIE_LTSSM_STATUS_REG bit[28:24] */ @@ -904,7 +917,7 @@ static int mtk_pcie_setup(struct mtk_gen3_pcie *pcie) usleep_range(10, 20); /* Don't touch the hardware registers before power up */ - err = mtk_pcie_power_up(pcie); + err = pcie->soc->power_up(pcie); if (err) return err; @@ -939,6 +952,7 @@ static int mtk_pcie_probe(struct platform_device *pdev) pcie = pci_host_bridge_priv(host); pcie->dev = dev; + pcie->soc = device_get_match_data(dev); platform_set_drvdata(pdev, pcie); err = mtk_pcie_setup(pcie); @@ -1054,7 +1068,7 @@ static int mtk_pcie_resume_noirq(struct device *dev) struct mtk_gen3_pcie *pcie = dev_get_drvdata(dev); int err; - err = mtk_pcie_power_up(pcie); + err = pcie->soc->power_up(pcie); if (err) return err; @@ -1074,8 +1088,12 @@ static const struct dev_pm_ops mtk_pcie_pm_ops = { mtk_pcie_resume_noirq) }; +static const struct mtk_gen3_pcie_pdata mtk_pcie_soc_mt8192 = { + .power_up = mtk_pcie_power_up, +}; + static const struct of_device_id mtk_pcie_of_match[] = { - { .compatible = "mediatek,mt8192-pcie" }, + { .compatible = "mediatek,mt8192-pcie", .data = &mtk_pcie_soc_mt8192 }, {}, }; MODULE_DEVICE_TABLE(of, mtk_pcie_of_match);