[PATCH v4 3/6] PCI: dwc: rcar-gen4: Add .deinit callback

[Marek Vasut <marek.vasut+renesas@mailbox.org>]

Add .deinit callback in preparation for R-Car Gen5 support. The
.deinit callback will be used to tear down the PHY on R-Car Gen5.
Thus far, it does what rcar_gen4_pcie_common_deinit() used to do
directly.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
---
Cc: "Krzysztof Wilczyński" <kwilczynski@kernel.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
Cc: Lorenzo Pieralisi <lpieralisi@kernel.org>
Cc: Manivannan Sadhasivam <mani@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org
---
V3: New patch
V4: Rebase on next-20260904
---
 drivers/pci/controller/dwc/pcie-rcar-gen4.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-rcar-gen4.c b/drivers/pci/controller/dwc/pcie-rcar-gen4.c
index a19ebbab2f8c3..04871ac11c348 100644
--- a/drivers/pci/controller/dwc/pcie-rcar-gen4.c
+++ b/drivers/pci/controller/dwc/pcie-rcar-gen4.c
@@ -88,6 +88,7 @@ MODULE_FIRMWARE(RCAR_GEN4_PCIE_FIRMWARE_NAME);
 struct rcar_gen4_pcie;
 struct rcar_gen4_pcie_drvdata {
 	int (*init)(struct rcar_gen4_pcie *rcar);
+	void (*deinit)(struct rcar_gen4_pcie *rcar);
 	int (*ltssm_control)(struct rcar_gen4_pcie *rcar, bool enable);
 	enum dw_pcie_device_mode mode;
 };
@@ -520,7 +521,7 @@ static int rcar_gen4_pcie_host_init(struct dw_pcie_rp *pp)
 	return 0;
 
 err:
-	rcar_gen4_pcie_common_deinit(rcar);
+	rcar->drvdata->deinit(rcar);
 	return ret;
 }
 
@@ -530,7 +531,7 @@ static void rcar_gen4_pcie_host_deinit(struct dw_pcie_rp *pp)
 	struct rcar_gen4_pcie *rcar = to_rcar_gen4_pcie(dw);
 
 	gpiod_set_value_cansleep(dw->pe_rst, 1);
-	rcar_gen4_pcie_common_deinit(rcar);
+	rcar->drvdata->deinit(rcar);
 }
 
 static const struct dw_pcie_host_ops rcar_gen4_pcie_host_ops = {
@@ -580,7 +581,7 @@ static void rcar_gen4_pcie_ep_post_deinit(struct dw_pcie_ep *ep)
 	struct rcar_gen4_pcie *rcar = to_rcar_gen4_pcie(dw);
 
 	writel(0, rcar->base + PCIEDMAINTSTSEN);
-	rcar_gen4_pcie_common_deinit(rcar);
+	rcar->drvdata->deinit(rcar);
 }
 
 static int rcar_gen4_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
@@ -913,24 +914,28 @@ static int rcar_gen4_pcie_ltssm_control(struct rcar_gen4_pcie *rcar, bool enable
 
 static struct rcar_gen4_pcie_drvdata drvdata_r8a779f0_pcie = {
 	.init = rcar_gen4_pcie_common_init,
+	.deinit = rcar_gen4_pcie_common_deinit,
 	.ltssm_control = r8a779f0_pcie_ltssm_control,
 	.mode = DW_PCIE_RC_TYPE,
 };
 
 static struct rcar_gen4_pcie_drvdata drvdata_r8a779f0_pcie_ep = {
 	.init = rcar_gen4_pcie_common_init,
+	.deinit = rcar_gen4_pcie_common_deinit,
 	.ltssm_control = r8a779f0_pcie_ltssm_control,
 	.mode = DW_PCIE_EP_TYPE,
 };
 
 static struct rcar_gen4_pcie_drvdata drvdata_rcar_gen4_pcie = {
 	.init = rcar_gen4_v4h_v4m_pcie_init,
+	.deinit = rcar_gen4_pcie_common_deinit,
 	.ltssm_control = rcar_gen4_pcie_ltssm_control,
 	.mode = DW_PCIE_RC_TYPE,
 };
 
 static struct rcar_gen4_pcie_drvdata drvdata_rcar_gen4_pcie_ep = {
 	.init = rcar_gen4_v4h_v4m_pcie_init,
+	.deinit = rcar_gen4_pcie_common_deinit,
 	.ltssm_control = rcar_gen4_pcie_ltssm_control,
 	.mode = DW_PCIE_EP_TYPE,
 };
-- 
2.53.0