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b=LzmcCgGtgKTPX45oE+ZDVt/nkq77Gl0WOhQWXJy9mz/uL5noAwwUrhEkywJY6cSWAmXoinOK0O1IUm8J3tBEmq280bVXutdbsfEzseJdljFE9yyyWvjmeAF7jbNJMTvRtiyWqwuiutPExlBHWH9vKVMb02C4IH9LaMdPla9JOn8= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from AM6PR04MB4838.eurprd04.prod.outlook.com (2603:10a6:20b:4::16) by AS5PR04MB10020.eurprd04.prod.outlook.com (2603:10a6:20b:682::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7113.26; Sun, 24 Dec 2023 18:33:33 +0000 Received: from AM6PR04MB4838.eurprd04.prod.outlook.com ([fe80::95f5:5118:258f:ee40]) by AM6PR04MB4838.eurprd04.prod.outlook.com ([fe80::95f5:5118:258f:ee40%7]) with mapi id 15.20.7113.026; Sun, 24 Dec 2023 18:33:33 +0000 From: Frank Li To: krzysztof.kozlowski@linaro.org Cc: Frank.Li@nxp.com, bhelgaas@google.com, conor+dt@kernel.org, devicetree@vger.kernel.org, festevam@gmail.com, helgaas@kernel.org, hongxing.zhu@nxp.com, imx@lists.linux.dev, kernel@pengutronix.de, krzysztof.kozlowski+dt@linaro.org, kw@linux.com, l.stach@pengutronix.de, linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, lpieralisi@kernel.org, manivannan.sadhasivam@linaro.org, robh@kernel.org, s.hauer@pengutronix.de, shawnguo@kernel.org Subject: [PATCH v6 06/16] PCI: imx6: Simplify ltssm_enable() by using ltssm_off and ltssm_mask Date: Sun, 24 Dec 2023 13:32:32 -0500 Message-Id: <20231224183242.1675372-7-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231224183242.1675372-1-Frank.Li@nxp.com> References: <20231224183242.1675372-1-Frank.Li@nxp.com> X-ClientProxiedBy: SJ0PR03CA0169.namprd03.prod.outlook.com (2603:10b6:a03:338::24) To AM6PR04MB4838.eurprd04.prod.outlook.com (2603:10a6:20b:4::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM6PR04MB4838:EE_|AS5PR04MB10020:EE_ X-MS-Office365-Filtering-Correlation-Id: b30e8385-6e9f-4bfa-f9fb-08dc04aed55c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Signed-off-by: Frank Li --- Notes: Change from v1 to v3 - none drivers/pci/controller/dwc/pci-imx6.c | 37 ++++++++++++--------------- 1 file changed, 16 insertions(+), 21 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 332c392f8e5bc..588bfb616260e 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -75,6 +75,8 @@ struct imx6_pcie_drvdata { int dbi_length; const char *gpr; const char *clk_names[IMX6_PCIE_MAX_CLKS]; + const u32 ltssm_off; + const u32 ltssm_mask; }; struct imx6_pcie { @@ -775,18 +777,11 @@ static int imx6_pcie_wait_for_speed_change(struct imx6_pcie *imx6_pcie) static void imx6_pcie_ltssm_enable(struct device *dev) { struct imx6_pcie *imx6_pcie = dev_get_drvdata(dev); + const struct imx6_pcie_drvdata *drvdata = imx6_pcie->drvdata; - switch (imx6_pcie->drvdata->variant) { - case IMX6Q: - case IMX6SX: - case IMX6QP: - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, - IMX6Q_GPR12_PCIE_CTL_2, - IMX6Q_GPR12_PCIE_CTL_2); - break; - default: - break; - } + if (drvdata->ltssm_mask) + regmap_update_bits(imx6_pcie->iomuxc_gpr, drvdata->ltssm_off, drvdata->ltssm_mask, + drvdata->ltssm_mask); reset_control_deassert(imx6_pcie->apps_reset); } @@ -794,17 +789,11 @@ static void imx6_pcie_ltssm_enable(struct device *dev) static void imx6_pcie_ltssm_disable(struct device *dev) { struct imx6_pcie *imx6_pcie = dev_get_drvdata(dev); + const struct imx6_pcie_drvdata *drvdata = imx6_pcie->drvdata; - switch (imx6_pcie->drvdata->variant) { - case IMX6Q: - case IMX6SX: - case IMX6QP: - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, - IMX6Q_GPR12_PCIE_CTL_2, 0); - break; - default: - break; - } + if (drvdata->ltssm_mask) + regmap_update_bits(imx6_pcie->iomuxc_gpr, drvdata->ltssm_off, + drvdata->ltssm_mask, 0); reset_control_assert(imx6_pcie->apps_reset); } @@ -1385,6 +1374,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .dbi_length = 0x200, .gpr = "fsl,imx6q-iomuxc-gpr", .clk_names = {"pcie_bus", "pcie", "pcie_phy"}, + .ltssm_off = IOMUXC_GPR12, + .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, }, [IMX6SX] = { .variant = IMX6SX, @@ -1393,6 +1384,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { IMX6_PCIE_FLAG_SUPPORTS_SUSPEND, .gpr = "fsl,imx6q-iomuxc-gpr", .clk_names = {"pcie_bus", "pcie", "pcie_phy", "pcie_inbound_axi"}, + .ltssm_off = IOMUXC_GPR12, + .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, }, [IMX6QP] = { .variant = IMX6QP, @@ -1402,6 +1395,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .dbi_length = 0x200, .gpr = "fsl,imx6q-iomuxc-gpr", .clk_names = {"pcie_bus", "pcie", "pcie_phy"}, + .ltssm_off = IOMUXC_GPR12, + .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, }, [IMX7D] = { .variant = IMX7D,