linux-kernel - [PATCH v1 1/2] PCI: dw-rockchip: Add remove callback for resource cleanup

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Message-ID: <20251027145602.199154-2-linux.amoon@gmail.com>
Date: Mon, 27 Oct 2025 20:25:29 +0530
From: Anand Moon <linux.amoon@...il.com>
To: Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kwilczynski@...nel.org>,
	Manivannan Sadhasivam <mani@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Heiko Stuebner <heiko@...ech.de>,
	Niklas Cassel <cassel@...nel.org>,
	Shawn Lin <shawn.lin@...k-chips.com>,
	Hans Zhang <18255117159@....com>,
	Nicolas Frattaroli <nicolas.frattaroli@...labora.com>,
	linux-pci@...r.kernel.org (open list:PCI NATIVE HOST BRIDGE AND ENDPOINT DRIVERS),
	linux-arm-kernel@...ts.infradead.org (moderated list:ARM/Rockchip SoC support),
	linux-rockchip@...ts.infradead.org (open list:ARM/Rockchip SoC support),
	linux-kernel@...r.kernel.org (open list)
Cc: Anand Moon <linux.amoon@...il.com>
Subject: [PATCH v1 1/2] PCI: dw-rockchip: Add remove callback for resource cleanup

Introduce a .remove() callback to the Rockchip DesignWare PCIe
controller driver to ensure proper resource deinitialization during
device removal. This includes disabling clocks and deinitializing the
PCIe PHY.

Signed-off-by: Anand Moon <linux.amoon@...il.com>
---
 drivers/pci/controller/dwc/pcie-dw-rockchip.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/pci/controller/dwc/pcie-dw-rockchip.c b/drivers/pci/controller/dwc/pcie-dw-rockchip.c
index 87dd2dd188b4..b878ae8e2b3e 100644
--- a/drivers/pci/controller/dwc/pcie-dw-rockchip.c
+++ b/drivers/pci/controller/dwc/pcie-dw-rockchip.c
@@ -717,6 +717,16 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
 	return ret;
 }
 
+static void rockchip_pcie_remove(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct rockchip_pcie *rockchip = dev_get_drvdata(dev);
+
+	/* Perform other cleanups as necessary */
+	clk_bulk_disable_unprepare(rockchip->clk_cnt, rockchip->clks);
+	rockchip_pcie_phy_deinit(rockchip);
+}
+
 static const struct rockchip_pcie_of_data rockchip_pcie_rc_of_data_rk3568 = {
 	.mode = DW_PCIE_RC_TYPE,
 };
@@ -754,5 +764,6 @@ static struct platform_driver rockchip_pcie_driver = {
 		.suppress_bind_attrs = true,
 	},
 	.probe = rockchip_pcie_probe,
+	.remove = rockchip_pcie_remove,
 };
 builtin_platform_driver(rockchip_pcie_driver);
-- 
2.50.1