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Sat, 02 May 2026 03:13:43 -0700 (PDT) From: Inochi Amaoto To: Jingoo Han , Manivannan Sadhasivam , Bjorn Helgaas , Lorenzo Pieralisi , =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Yixun Lan , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Inochi Amaoto , Alex Elder , Gustavo Pimentel Cc: linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, Yixun Lan , Longbin Li Subject: [PATCH 1/5] PCI: spacemit-k1: Add device data support Date: Sat, 2 May 2026 18:13:14 +0800 Message-ID: <20260502101319.2364052-2-inochiama@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260502101319.2364052-1-inochiama@gmail.com> References: <20260502101319.2364052-1-inochiama@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit To reuse the K1 PCIe driver logic for K3 PCIe controller, add device data to handle the K1 specific logic and make room for the incoming logic for K3. Signed-off-by: Inochi Amaoto --- drivers/pci/controller/dwc/pcie-spacemit-k1.c | 35 ++++++++++++++++--- 1 file changed, 31 insertions(+), 4 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-spacemit-k1.c b/drivers/pci/controller/dwc/pcie-spacemit-k1.c index be20a520255b..cd3cd038ad2b 100644 --- a/drivers/pci/controller/dwc/pcie-spacemit-k1.c +++ b/drivers/pci/controller/dwc/pcie-spacemit-k1.c @@ -57,6 +57,13 @@ struct k1_pcie { u32 pmu_off; }; +struct k1_pcie_device_data { + const struct dw_pcie_host_ops *host_ops; + const struct dw_pcie_ops *ops; + int (*parse_port)(struct k1_pcie *k1); + int (*post_init)(struct k1_pcie *k1); +}; + #define to_k1_pcie(dw_pcie) \ platform_get_drvdata(to_platform_device((dw_pcie)->dev)) @@ -278,10 +285,15 @@ static int k1_pcie_parse_port(struct k1_pcie *k1) static int k1_pcie_probe(struct platform_device *pdev) { + const struct k1_pcie_device_data *data; struct device *dev = &pdev->dev; struct k1_pcie *k1; int ret; + data = device_get_match_data(dev); + if (!data) + return -ENODEV; + k1 = devm_kzalloc(dev, sizeof(*k1), GFP_KERNEL); if (!k1) return -ENOMEM; @@ -299,11 +311,11 @@ static int k1_pcie_probe(struct platform_device *pdev) "failed to map \"link\" registers\n"); k1->pci.dev = dev; - k1->pci.ops = &k1_pcie_ops; + k1->pci.ops = data->ops; k1->pci.pp.num_vectors = MAX_MSI_IRQS; dw_pcie_cap_set(&k1->pci, REQ_RES); - k1->pci.pp.ops = &k1_pcie_host_ops; + k1->pci.pp.ops = data->host_ops; /* Hold the PHY in reset until we start the link */ regmap_set_bits(k1->pmu, k1->pmu_off + PCIE_CLK_RESET_CONTROL, @@ -320,7 +332,7 @@ static int k1_pcie_probe(struct platform_device *pdev) platform_set_drvdata(pdev, k1); - ret = k1_pcie_parse_port(k1); + ret = data->parse_port(k1); if (ret) return dev_err_probe(dev, ret, "failed to parse root port\n"); @@ -328,6 +340,15 @@ static int k1_pcie_probe(struct platform_device *pdev) if (ret) return dev_err_probe(dev, ret, "failed to initialize host\n"); + if (data->post_init) { + ret = data->post_init(k1); + if (ret) { + dw_pcie_host_deinit(&k1->pci.pp); + return dev_err_probe(dev, ret, + "Failed to post init\n"); + } + } + return 0; } @@ -338,8 +359,14 @@ static void k1_pcie_remove(struct platform_device *pdev) dw_pcie_host_deinit(&k1->pci.pp); } +static const struct k1_pcie_device_data k1_pcie_device_data = { + .host_ops = &k1_pcie_host_ops, + .ops = &k1_pcie_ops, + .parse_port = k1_pcie_parse_port, +}; + static const struct of_device_id k1_pcie_of_match_table[] = { - { .compatible = "spacemit,k1-pcie", }, + { .compatible = "spacemit,k1-pcie", .data = &k1_pcie_device_data}, { } }; -- 2.54.0