linux-kernel - [PATCH v10 4/5] PCI: qcom: Add a flag in match data along with ops

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Date:   Tue,  5 Oct 2021 01:11:27 +0530
From:   Prasad Malisetty <pmaliset@...eaurora.org>
To:     agross@...nel.org, bjorn.andersson@...aro.org, bhelgaas@...gle.com,
        robh+dt@...nel.org, swboyd@...omium.org, lorenzo.pieralisi@....com,
        svarbanov@...sol.com
Cc:     devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        dianders@...omium.org, mka@...omium.org, vbadigan@...eaurora.org,
        sallenki@...eaurora.org, manivannan.sadhasivam@...aro.org,
        linux-pci@...r.kernel.org,
        Prasad Malisetty <pmaliset@...eaurora.org>
Subject: [PATCH v10 4/5] PCI: qcom: Add a flag in match data along with ops

Add pipe_clk_need_muxing flag in match data and configure
If the platform needs to switch pipe_clk_src.

Signed-off-by: Prasad Malisetty <pmaliset@...eaurora.org>
---
 drivers/pci/controller/dwc/pcie-qcom.c | 69 ++++++++++++++++++++++++++++------
 1 file changed, 58 insertions(+), 11 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index 8a7a300..152451b 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -189,6 +189,11 @@ struct qcom_pcie_ops {
 	int (*config_sid)(struct qcom_pcie *pcie);
 };
 
+struct qcom_pcie_cfg {
+	const struct qcom_pcie_ops *ops;
+	unsigned int pipe_clk_need_muxing:1;
+};
+
 struct qcom_pcie {
 	struct dw_pcie *pci;
 	void __iomem *parf;			/* DT parf */
@@ -197,6 +202,7 @@ struct qcom_pcie {
 	struct phy *phy;
 	struct gpio_desc *reset;
 	const struct qcom_pcie_ops *ops;
+	unsigned int pipe_clk_need_muxing:1;
 };
 
 #define to_qcom_pcie(x)		dev_get_drvdata((x)->dev)
@@ -1456,6 +1462,39 @@ static const struct qcom_pcie_ops ops_1_9_0 = {
 	.config_sid = qcom_pcie_config_sid_sm8250,
 };
 
+static const struct qcom_pcie_cfg apq8084_cfg = {
+	.ops = &ops_1_0_0,
+};
+
+static const struct qcom_pcie_cfg ipq8064_cfg = {
+	.ops = &ops_2_1_0,
+};
+
+static const struct qcom_pcie_cfg msm8996_cfg = {
+	.ops = &ops_2_3_2,
+};
+
+static const struct qcom_pcie_cfg ipq8074_cfg = {
+	.ops = &ops_2_3_3,
+};
+
+static const struct qcom_pcie_cfg ipq4019_cfg = {
+	.ops = &ops_2_4_0,
+};
+
+static const struct qcom_pcie_cfg sdm845_cfg = {
+	.ops = &ops_2_7_0,
+};
+
+static const struct qcom_pcie_cfg sm8250_cfg = {
+	.ops = &ops_1_9_0,
+};
+
+static const struct qcom_pcie_cfg sc7280_cfg = {
+	.ops = &ops_1_9_0,
+	.pipe_clk_need_muxing = true,
+};
+
 static const struct dw_pcie_ops dw_pcie_ops = {
 	.link_up = qcom_pcie_link_up,
 	.start_link = qcom_pcie_start_link,
@@ -1467,6 +1506,7 @@ static int qcom_pcie_probe(struct platform_device *pdev)
 	struct pcie_port *pp;
 	struct dw_pcie *pci;
 	struct qcom_pcie *pcie;
+	const struct qcom_pcie_cfg *pcie_cfg;
 	int ret;
 
 	pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
@@ -1488,7 +1528,13 @@ static int qcom_pcie_probe(struct platform_device *pdev)
 
 	pcie->pci = pci;
 
-	pcie->ops = of_device_get_match_data(dev);
+	pcie_cfg = of_device_get_match_data(dev);
+	pcie->ops = pcie_cfg->ops;
+	if (!pcie->ops) {
+		dev_err(dev, "Invalid platform data\n");
+		return -EINVAL;
+	}
+	pcie->pipe_clk_need_muxing = pcie_cfg->pipe_clk_need_muxing;
 
 	pcie->reset = devm_gpiod_get_optional(dev, "perst", GPIOD_OUT_HIGH);
 	if (IS_ERR(pcie->reset)) {
@@ -1545,16 +1591,17 @@ static int qcom_pcie_probe(struct platform_device *pdev)
 }
 
 static const struct of_device_id qcom_pcie_match[] = {
-	{ .compatible = "qcom,pcie-apq8084", .data = &ops_1_0_0 },
-	{ .compatible = "qcom,pcie-ipq8064", .data = &ops_2_1_0 },
-	{ .compatible = "qcom,pcie-ipq8064-v2", .data = &ops_2_1_0 },
-	{ .compatible = "qcom,pcie-apq8064", .data = &ops_2_1_0 },
-	{ .compatible = "qcom,pcie-msm8996", .data = &ops_2_3_2 },
-	{ .compatible = "qcom,pcie-ipq8074", .data = &ops_2_3_3 },
-	{ .compatible = "qcom,pcie-ipq4019", .data = &ops_2_4_0 },
-	{ .compatible = "qcom,pcie-qcs404", .data = &ops_2_4_0 },
-	{ .compatible = "qcom,pcie-sdm845", .data = &ops_2_7_0 },
-	{ .compatible = "qcom,pcie-sm8250", .data = &ops_1_9_0 },
+	{ .compatible = "qcom,pcie-apq8084", .data = &apq8084_cfg },
+	{ .compatible = "qcom,pcie-ipq8064", .data = &ipq8064_cfg },
+	{ .compatible = "qcom,pcie-ipq8064-v2", .data = &ipq8064_cfg },
+	{ .compatible = "qcom,pcie-apq8064", .data = &ipq8064_cfg },
+	{ .compatible = "qcom,pcie-msm8996", .data = &msm8996_cfg },
+	{ .compatible = "qcom,pcie-ipq8074", .data = &ipq8074_cfg },
+	{ .compatible = "qcom,pcie-ipq4019", .data = &ipq4019_cfg },
+	{ .compatible = "qcom,pcie-qcs404", .data = &ipq4019_cfg },
+	{ .compatible = "qcom,pcie-sdm845", .data = &sdm845_cfg },
+	{ .compatible = "qcom,pcie-sm8250", .data = &sm8250_cfg },
+	{ .compatible = "qcom,pcie-sc7280", .data = &sc7280_cfg },
 	{ }
 };
 
-- 
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