PCI: qcom: Add SM8250 SoC support

The PCIe IP (rev 1.9.0) on SM8250 SoC is similar to the one used on
SDM845. Hence the support is added reusing the members of ops_2_7_0.
The key difference between ops_2_7_0 and ops_1_9_0 is the config_sid
callback, which will be added in successive commit.

Link: https://lore.kernel.org/r/20201208121402.178011-3-mani@kernel.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>

drivers/pci/controller/dwc/pcie-qcom.c

@@ -1348,6 +1348,16 @@ static const struct qcom_pcie_ops ops_2_7_0 = {
 	.post_deinit = qcom_pcie_post_deinit_2_7_0,
 };
 
+/* Qcom IP rev.: 1.9.0 */
+static const struct qcom_pcie_ops ops_1_9_0 = {
+	.get_resources = qcom_pcie_get_resources_2_7_0,
+	.init = qcom_pcie_init_2_7_0,
+	.deinit = qcom_pcie_deinit_2_7_0,
+	.ltssm_enable = qcom_pcie_2_3_2_ltssm_enable,
+	.post_init = qcom_pcie_post_init_2_7_0,
+	.post_deinit = qcom_pcie_post_deinit_2_7_0,
+};
+
 static const struct dw_pcie_ops dw_pcie_ops = {
 	.link_up = qcom_pcie_link_up,
 	.start_link = qcom_pcie_start_link,
@@ -1446,6 +1456,7 @@ static const struct of_device_id qcom_pcie_match[] = {
 	{ .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 },
 	{ }
 };