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Received: from AM6PR04MB4838.eurprd04.prod.outlook.com (2603:10a6:20b:4::16) by DU0PR04MB9635.eurprd04.prod.outlook.com (2603:10a6:10:31f::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7068.27; Thu, 7 Dec 2023 19:35:21 +0000 Received: from AM6PR04MB4838.eurprd04.prod.outlook.com ([fe80::95f5:5118:258f:ee40]) by AM6PR04MB4838.eurprd04.prod.outlook.com ([fe80::95f5:5118:258f:ee40%6]) with mapi id 15.20.7068.026; Thu, 7 Dec 2023 19:35:21 +0000 From: Frank Li To: helgaas@kernel.org, manivannan.sadhasivam@linaro.org Cc: Frank.li@nxp.com, bhelgaas@google.com, conor+dt@kernel.org, devicetree@vger.kernel.org, festevam@gmail.com, 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, robh@kernel.org, s.hauer@pengutronix.de, shawnguo@kernel.org Subject: [PATCH v2 6/9] PCI: imx6: Simplify configure_type() by using mode_off and mode_mask Date: Thu, 7 Dec 2023 14:34:27 -0500 Message-Id: <20231207193430.431994-7-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231207193430.431994-1-Frank.Li@nxp.com> References: <20231207193430.431994-1-Frank.Li@nxp.com> X-ClientProxiedBy: SJ0PR03CA0348.namprd03.prod.outlook.com (2603:10b6:a03:39c::23) To AM6PR04MB4838.eurprd04.prod.outlook.com (2603:10a6:20b:4::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM6PR04MB4838:EE_|DU0PR04MB9635:EE_ X-MS-Office365-Filtering-Correlation-Id: 3c17876a-7e4d-48f9-c5c6-08dbf75ba6d3 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Thu, 07 Dec 2023 11:35:31 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1784653064920255039 X-GMAIL-MSGID: 1784653064920255039 Add drvdata::mode_off and drvdata::mode_mask to simple imx6_pcie_configure_type() logic. Signed-off-by: Frank Li --- Notes: Change from v1 to v2 - use ffs() to fixe build error. powerpc-linux-ld: drivers/pci/controller/dwc/pci-imx6.o: in function `imx6_pcie_host_init': >> pci-imx6.c:(.text.imx6_pcie_host_init+0x120): undefined reference to `__ffsdi2' drivers/pci/controller/dwc/pci-imx6.c | 60 ++++++++++++++++++--------- 1 file changed, 40 insertions(+), 20 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 5bfb780e441fd..1fac6129eeb5f 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -69,6 +69,7 @@ enum imx6_pcie_variants { #define imx6_check_flag(pci, val) (pci->drvdata->flags & val) +#define IMX6_PCIE_MAX_INSTANCES 2 struct imx6_pcie_drvdata { enum imx6_pcie_variants variant; enum dw_pcie_device_mode mode; @@ -77,6 +78,8 @@ struct imx6_pcie_drvdata { const char *gpr; const u32 ltssm_off; const u32 ltssm_mask; + const u32 mode_off[IMX6_PCIE_MAX_INSTANCES]; + const u32 mode_mask[IMX6_PCIE_MAX_INSTANCES]; }; struct imx6_pcie { @@ -177,32 +180,25 @@ static unsigned int imx6_pcie_grp_offset(const struct imx6_pcie *imx6_pcie) static void imx6_pcie_configure_type(struct imx6_pcie *imx6_pcie) { - unsigned int mask, val, mode; + const struct imx6_pcie_drvdata *drvdata = imx6_pcie->drvdata; + unsigned int mask, val, mode, id; - if (imx6_pcie->drvdata->mode == DW_PCIE_EP_TYPE) + if (drvdata->mode == DW_PCIE_EP_TYPE) mode = PCI_EXP_TYPE_ENDPOINT; else mode = PCI_EXP_TYPE_ROOT_PORT; - switch (imx6_pcie->drvdata->variant) { - case IMX8MQ: - case IMX8MQ_EP: - if (imx6_pcie->controller_id == 1) { - mask = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE; - val = FIELD_PREP(IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, - mode); - } else { - mask = IMX6Q_GPR12_DEVICE_TYPE; - val = FIELD_PREP(IMX6Q_GPR12_DEVICE_TYPE, mode); - } - break; - default: - mask = IMX6Q_GPR12_DEVICE_TYPE; - val = FIELD_PREP(IMX6Q_GPR12_DEVICE_TYPE, mode); - break; - } + id = imx6_pcie->controller_id; + + /* If mode_mask[id] is zero, means each controller have its individual gpr */ + if (!drvdata->mode_mask[id]) + id = 0; + + mask = drvdata->mode_mask[id]; + /* FIELD_PREP mask have been constant */ + val = mode << (ffs(mask) - 1); - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, mask, val); + regmap_update_bits(imx6_pcie->iomuxc_gpr, drvdata->mode_off[id], mask, val); } static int pcie_phy_poll_ack(struct imx6_pcie *imx6_pcie, bool exp_val) @@ -1437,6 +1433,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx6q-iomuxc-gpr", .ltssm_off = IOMUXC_GPR12, .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX6SX] = { .variant = IMX6SX, @@ -1447,6 +1445,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx6q-iomuxc-gpr", .ltssm_off = IOMUXC_GPR12, .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX6QP] = { .variant = IMX6QP, @@ -1457,6 +1457,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .gpr = "fsl,imx6q-iomuxc-gpr", .ltssm_off = IOMUXC_GPR12, .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX7D] = { .variant = IMX7D, @@ -1464,6 +1466,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { IMX6_PCIE_FLAG_HAS_APP_RESET | IMX6_PCIE_FLAG_HAS_PHY_RESET, .gpr = "fsl,imx7d-iomuxc-gpr", + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX8MQ] = { .variant = IMX8MQ, @@ -1471,6 +1475,10 @@ static const struct imx6_pcie_drvdata drvdata[] = { IMX6_PCIE_FLAG_HAS_APP_RESET | IMX6_PCIE_FLAG_HAS_PHY_RESET, .gpr = "fsl,imx8mq-iomuxc-gpr", + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, + .mode_off[1] = IOMUXC_GPR12, + .mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, }, [IMX8MM] = { .variant = IMX8MM, @@ -1479,6 +1487,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { IMX6_PCIE_FLAG_HAS_PHY | IMX6_PCIE_FLAG_HAS_APP_RESET, .gpr = "fsl,imx8mm-iomuxc-gpr", + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX8MP] = { .variant = IMX8MP, @@ -1487,6 +1497,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { IMX6_PCIE_FLAG_HAS_PHY | IMX6_PCIE_FLAG_HAS_APP_RESET, .gpr = "fsl,imx8mp-iomuxc-gpr", + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX8MQ_EP] = { .variant = IMX8MQ_EP, @@ -1495,6 +1507,10 @@ static const struct imx6_pcie_drvdata drvdata[] = { IMX6_PCIE_FLAG_HAS_PHY_RESET, .mode = DW_PCIE_EP_TYPE, .gpr = "fsl,imx8mq-iomuxc-gpr", + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, + .mode_off[1] = IOMUXC_GPR12, + .mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, }, [IMX8MM_EP] = { .variant = IMX8MM_EP, @@ -1502,12 +1518,16 @@ static const struct imx6_pcie_drvdata drvdata[] = { IMX6_PCIE_FLAG_HAS_PHY, .mode = DW_PCIE_EP_TYPE, .gpr = "fsl,imx8mm-iomuxc-gpr", + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX8MP_EP] = { .variant = IMX8MP_EP, .flags = IMX6_PCIE_FLAG_HAS_CLK_AUX, .mode = DW_PCIE_EP_TYPE, .gpr = "fsl,imx8mp-iomuxc-gpr", + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, };