Merge branch 'pci/qcom'

- List platforms that use a single MSI host interrupt in qcom DT (Johan
  Hovold)

- Add SC8280XP, SA8540P support to qcom DT binding and driver(Johan Hovold)

- Make all optional clocks truly optional in the driver (Johan Hovold)

- Rename per-IP structs to reflect the IP version (Johan Hovold)

- Sort device ID match table by compatible string (Johan Hovold)

- Add MODULE_DEVICE_TABLE to enable module autoloading (Dmitry Baryshkov)

- Drop the unused .post_deinit() callback (Johan Hovold)

- Rely on DT for clock information instead of hard-coding it in the driver
  (Manivannan Sadhasivam)

- Disable IRQs when removing driver to avoid spurious IRQs later
  (Manivannan Sadhasivam)

- Expose link transition counts via debugfs to help debug issues with
  low-power states (Manivannan Sadhasivam)

- Gate Master AXI clock to the MHI bus while in L1 substates to save power
  (Manivannan Sadhasivam)

- Disable Master AXI clock to save power when there is no traffic on PCIe
  (Manivannan Sadhasivam)

- Make the "PERST separation" debug feature optional in the DT and the
  driver (Manivannan Sadhasivam)

- Define clocks to be per-platform in DT to prepare for future SoCs
  (Manivannan Sadhasivam)

- Add SM8450 SoC support (Manivannan Sadhasivam)

- Check for platform_get_resource_byname() to avoid a NULL pointer
  dereference (Yang Yingliang)

* pci/qcom:
  PCI: qcom-ep: Check platform_get_resource_byname() return value
  PCI: qcom-ep: Add support for SM8450 SoC
  dt-bindings: PCI: qcom-ep: Add support for SM8450 SoC
  dt-bindings: PCI: qcom-ep: Define clocks per platform
  PCI: qcom-ep: Make PERST separation optional
  dt-bindings: PCI: qcom-ep: Make PERST separation optional
  PCI: qcom-ep: Disable Master AXI Clock when there is no PCIe traffic
  PCI: qcom-ep: Gate Master AXI clock to MHI bus during L1SS
  PCI: qcom-ep: Expose link transition counts via debugfs
  PCI: qcom-ep: Disable IRQs during driver remove
  PCI: qcom-ep: Make use of the cached dev pointer
  PCI: qcom-ep: Rely on the clocks supplied by devicetree
  PCI: qcom-ep: Add kernel-doc for qcom_pcie_ep structure
  PCI: qcom: Rename host-init error label
  PCI: qcom: Drop unused post_deinit callback
  PCI: qcom-ep: Add MODULE_DEVICE_TABLE
  PCI: qcom: Sort device-id table
  PCI: qcom: Clean up IP configurations
  PCI: qcom: Make all optional clocks optional
  PCI: qcom: Add support for SA8540P
  PCI: qcom: Add support for SC8280XP
  dt-bindings: PCI: qcom: Add SA8540P to binding
  dt-bindings: PCI: qcom: Add SC8280XP to binding
  dt-bindings: PCI: qcom: Enumerate platforms with single msi interrupt

1 files changed, 49 insertions, 79 deletions

diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index 66886dc6e777..f711acacaeaf 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -180,7 +180,7 @@ struct qcom_pcie_resources_2_3_3 {
 
 /* 6 clocks typically, 7 for sm8250 */
 struct qcom_pcie_resources_2_7_0 {
-	struct clk_bulk_data clks[9];
+	struct clk_bulk_data clks[12];
 	int num_clks;
 	struct regulator_bulk_data supplies[2];
 	struct reset_control *pci_reset;
@@ -208,17 +208,12 @@ struct qcom_pcie_ops {
 	int (*init)(struct qcom_pcie *pcie);
 	int (*post_init)(struct qcom_pcie *pcie);
 	void (*deinit)(struct qcom_pcie *pcie);
-	void (*post_deinit)(struct qcom_pcie *pcie);
 	void (*ltssm_enable)(struct qcom_pcie *pcie);
 	int (*config_sid)(struct qcom_pcie *pcie);
 };
 
 struct qcom_pcie_cfg {
 	const struct qcom_pcie_ops *ops;
-	unsigned int has_tbu_clk:1;
-	unsigned int has_ddrss_sf_tbu_clk:1;
-	unsigned int has_aggre0_clk:1;
-	unsigned int has_aggre1_clk:1;
 };
 
 struct qcom_pcie {
@@ -1175,6 +1170,7 @@ static int qcom_pcie_get_resources_2_7_0(struct qcom_pcie *pcie)
 	struct qcom_pcie_resources_2_7_0 *res = &pcie->res.v2_7_0;
 	struct dw_pcie *pci = pcie->pci;
 	struct device *dev = pci->dev;
+	unsigned int num_clks, num_opt_clks;
 	unsigned int idx;
 	int ret;
 
@@ -1195,18 +1191,25 @@ static int qcom_pcie_get_resources_2_7_0(struct qcom_pcie *pcie)
 	res->clks[idx++].id = "bus_master";
 	res->clks[idx++].id = "bus_slave";
 	res->clks[idx++].id = "slave_q2a";
-	if (pcie->cfg->has_tbu_clk)
-		res->clks[idx++].id = "tbu";
-	if (pcie->cfg->has_ddrss_sf_tbu_clk)
-		res->clks[idx++].id = "ddrss_sf_tbu";
-	if (pcie->cfg->has_aggre0_clk)
-		res->clks[idx++].id = "aggre0";
-	if (pcie->cfg->has_aggre1_clk)
-		res->clks[idx++].id = "aggre1";
 
+	num_clks = idx;
+
+	ret = devm_clk_bulk_get(dev, num_clks, res->clks);
+	if (ret < 0)
+		return ret;
+
+	res->clks[idx++].id = "tbu";
+	res->clks[idx++].id = "ddrss_sf_tbu";
+	res->clks[idx++].id = "aggre0";
+	res->clks[idx++].id = "aggre1";
+	res->clks[idx++].id = "noc_aggr_4";
+	res->clks[idx++].id = "noc_aggr_south_sf";
+	res->clks[idx++].id = "cnoc_qx";
+
+	num_opt_clks = idx - num_clks;
 	res->num_clks = idx;
 
-	ret = devm_clk_bulk_get(dev, res->num_clks, res->clks);
+	ret = devm_clk_bulk_get_optional(dev, num_opt_clks, res->clks + num_clks);
 	if (ret < 0)
 		return ret;
 
@@ -1509,15 +1512,13 @@ static int qcom_pcie_host_init(struct dw_pcie_rp *pp)
 	if (pcie->cfg->ops->config_sid) {
 		ret = pcie->cfg->ops->config_sid(pcie);
 		if (ret)
-			goto err;
+			goto err_assert_reset;
 	}
 
 	return 0;
 
-err:
+err_assert_reset:
 	qcom_ep_reset_assert(pcie);
-	if (pcie->cfg->ops->post_deinit)
-		pcie->cfg->ops->post_deinit(pcie);
 err_disable_phy:
 	phy_power_off(pcie->phy);
 err_deinit:
@@ -1601,68 +1602,35 @@ static const struct qcom_pcie_ops ops_2_9_0 = {
 	.ltssm_enable = qcom_pcie_2_3_2_ltssm_enable,
 };
 
-static const struct qcom_pcie_cfg apq8084_cfg = {
+static const struct qcom_pcie_cfg cfg_1_0_0 = {
 	.ops = &ops_1_0_0,
 };
 
-static const struct qcom_pcie_cfg ipq8064_cfg = {
+static const struct qcom_pcie_cfg cfg_1_9_0 = {
+	.ops = &ops_1_9_0,
+};
+
+static const struct qcom_pcie_cfg cfg_2_1_0 = {
 	.ops = &ops_2_1_0,
 };
 
-static const struct qcom_pcie_cfg msm8996_cfg = {
+static const struct qcom_pcie_cfg cfg_2_3_2 = {
 	.ops = &ops_2_3_2,
 };
 
-static const struct qcom_pcie_cfg ipq8074_cfg = {
+static const struct qcom_pcie_cfg cfg_2_3_3 = {
 	.ops = &ops_2_3_3,
 };
 
-static const struct qcom_pcie_cfg ipq4019_cfg = {
+static const struct qcom_pcie_cfg cfg_2_4_0 = {
 	.ops = &ops_2_4_0,
 };
 
-static const struct qcom_pcie_cfg sdm845_cfg = {
+static const struct qcom_pcie_cfg cfg_2_7_0 = {
 	.ops = &ops_2_7_0,
-	.has_tbu_clk = true,
-};
-
-static const struct qcom_pcie_cfg sm8150_cfg = {
-	/* sm8150 has qcom IP rev 1.5.0. However 1.5.0 ops are same as
-	 * 1.9.0, so reuse the same.
-	 */
-	.ops = &ops_1_9_0,
-};
-
-static const struct qcom_pcie_cfg sm8250_cfg = {
-	.ops = &ops_1_9_0,
-	.has_tbu_clk = true,
-	.has_ddrss_sf_tbu_clk = true,
-};
-
-static const struct qcom_pcie_cfg sm8450_pcie0_cfg = {
-	.ops = &ops_1_9_0,
-	.has_ddrss_sf_tbu_clk = true,
-	.has_aggre0_clk = true,
-	.has_aggre1_clk = true,
-};
-
-static const struct qcom_pcie_cfg sm8450_pcie1_cfg = {
-	.ops = &ops_1_9_0,
-	.has_ddrss_sf_tbu_clk = true,
-	.has_aggre1_clk = true,
-};
-
-static const struct qcom_pcie_cfg sc7280_cfg = {
-	.ops = &ops_1_9_0,
-	.has_tbu_clk = true,
-};
-
-static const struct qcom_pcie_cfg sc8180x_cfg = {
-	.ops = &ops_1_9_0,
-	.has_tbu_clk = true,
 };
 
-static const struct qcom_pcie_cfg ipq6018_cfg = {
+static const struct qcom_pcie_cfg cfg_2_9_0 = {
 	.ops = &ops_2_9_0,
 };
 
@@ -1761,22 +1729,24 @@ err_pm_runtime_put:
 }
 
 static const struct of_device_id qcom_pcie_match[] = {
-	{ .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-sm8150", .data = &sm8150_cfg },
-	{ .compatible = "qcom,pcie-sm8250", .data = &sm8250_cfg },
-	{ .compatible = "qcom,pcie-sc8180x", .data = &sc8180x_cfg },
-	{ .compatible = "qcom,pcie-sm8450-pcie0", .data = &sm8450_pcie0_cfg },
-	{ .compatible = "qcom,pcie-sm8450-pcie1", .data = &sm8450_pcie1_cfg },
-	{ .compatible = "qcom,pcie-sc7280", .data = &sc7280_cfg },
-	{ .compatible = "qcom,pcie-ipq6018", .data = &ipq6018_cfg },
+	{ .compatible = "qcom,pcie-apq8064", .data = &cfg_2_1_0 },
+	{ .compatible = "qcom,pcie-apq8084", .data = &cfg_1_0_0 },
+	{ .compatible = "qcom,pcie-ipq4019", .data = &cfg_2_4_0 },
+	{ .compatible = "qcom,pcie-ipq6018", .data = &cfg_2_9_0 },
+	{ .compatible = "qcom,pcie-ipq8064", .data = &cfg_2_1_0 },
+	{ .compatible = "qcom,pcie-ipq8064-v2", .data = &cfg_2_1_0 },
+	{ .compatible = "qcom,pcie-ipq8074", .data = &cfg_2_3_3 },
+	{ .compatible = "qcom,pcie-msm8996", .data = &cfg_2_3_2 },
+	{ .compatible = "qcom,pcie-qcs404", .data = &cfg_2_4_0 },
+	{ .compatible = "qcom,pcie-sa8540p", .data = &cfg_1_9_0 },
+	{ .compatible = "qcom,pcie-sc7280", .data = &cfg_1_9_0 },
+	{ .compatible = "qcom,pcie-sc8180x", .data = &cfg_1_9_0 },
+	{ .compatible = "qcom,pcie-sc8280xp", .data = &cfg_1_9_0 },
+	{ .compatible = "qcom,pcie-sdm845", .data = &cfg_2_7_0 },
+	{ .compatible = "qcom,pcie-sm8150", .data = &cfg_1_9_0 },
+	{ .compatible = "qcom,pcie-sm8250", .data = &cfg_1_9_0 },
+	{ .compatible = "qcom,pcie-sm8450-pcie0", .data = &cfg_1_9_0 },
+	{ .compatible = "qcom,pcie-sm8450-pcie1", .data = &cfg_1_9_0 },
 	{ }
 };