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Thu, 14 Mar 2024 00:48:50 -0700 (PDT) From: Manivannan Sadhasivam Date: Thu, 14 Mar 2024 13:18:00 +0530 Subject: [PATCH v10 2/8] PCI: dwc: ep: Add Kernel-doc comments for APIs Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240314-pci-dbi-rework-v10-2-14a45c5a938e@linaro.org> References: <20240314-pci-dbi-rework-v10-0-14a45c5a938e@linaro.org> In-Reply-To: <20240314-pci-dbi-rework-v10-0-14a45c5a938e@linaro.org> To: Jingoo Han , Gustavo Pimentel , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy?= =?utf-8?q?=C5=84ski?= , Rob Herring , Bjorn Helgaas , Marek Vasut , Yoshihiro Shimoda , Thierry Reding , Jonathan Hunter , Kishon Vijay Abraham I , Vidya Sagar , Vignesh Raghavendra , Richard Zhu , Lucas Stach , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , Minghuan Lian , Mingkai Hu , Roy Zang , Kunihiko Hayashi , Masami Hiramatsu , Kishon Vijay Abraham I , Jesper Nilsson , Srikanth Thokala Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-tegra@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, Niklas Cassel , linux-arm-kernel@axis.com, Manivannan Sadhasivam , Frank Li X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=openpgp-sha256; l=5340; i=manivannan.sadhasivam@linaro.org; h=from:subject:message-id; bh=qPJ16p8Nd0ufuHPNNhiWpoB7/WLrRfNhrK4O8P0gaT8=; b=owEBbQGS/pANAwAKAVWfEeb+kc71AcsmYgBl8qvCQlfusmHtkRqGvWtKmvyeNKM+C65NCODwx bK1ZJh/eceJATMEAAEKAB0WIQRnpUMqgUjL2KRYJ5dVnxHm/pHO9QUCZfKrwgAKCRBVnxHm/pHO 9R9mB/0b5JWO1eadebdGxANbD0K6A2DGRS/f4+rNu6AbMSY8rwWT+Rj8n6ht/VsnDI6VWJmv5cX yyARqUDjVGCDiwA/WEqpipsBgWFfmMPluBZ7e313bEIF6adquxVluGL+FlU+9NJXU0ha0t4YgRn 9VH3H8MoUSfbdLCcXahGcpBTMxnlx8m7yrS4tej9kAujUK5tPDywHhdg8gn4pZg/M1MI7glJL9a vSPoK2fdg/MPOJCldMqPq+am2+yZoov6soeWnweojr6oCW21TL7C16aPWL4qdc+T6qcAG4lRiFQ tqSy+G8Yrx4g3s1k+wA/Dld6ZVrPR3ec6Vw0cyTjrJj7B0QD X-Developer-Key: i=manivannan.sadhasivam@linaro.org; a=openpgp; fpr=C668AEC3C3188E4C611465E7488550E901166008 All of the APIs are missing the Kernel-doc comments. Hence, add them. Reviewed-by: Frank Li Signed-off-by: Manivannan Sadhasivam Reviewed-by: Niklas Cassel --- drivers/pci/controller/dwc/pcie-designware-ep.c | 78 +++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c index c05304eabb89..d7e8f2dda6ce 100644 --- a/drivers/pci/controller/dwc/pcie-designware-ep.c +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c @@ -14,6 +14,10 @@ #include #include +/** + * dw_pcie_ep_linkup - Notify EPF drivers about link up event + * @ep: DWC EP device + */ void dw_pcie_ep_linkup(struct dw_pcie_ep *ep) { struct pci_epc *epc = ep->epc; @@ -22,6 +26,11 @@ void dw_pcie_ep_linkup(struct dw_pcie_ep *ep) } EXPORT_SYMBOL_GPL(dw_pcie_ep_linkup); +/** + * dw_pcie_ep_init_notify - Notify EPF drivers about EPC initialization + * complete + * @ep: DWC EP device + */ void dw_pcie_ep_init_notify(struct dw_pcie_ep *ep) { struct pci_epc *epc = ep->epc; @@ -30,6 +39,14 @@ void dw_pcie_ep_init_notify(struct dw_pcie_ep *ep) } EXPORT_SYMBOL_GPL(dw_pcie_ep_init_notify); +/** + * dw_pcie_ep_get_func_from_ep - Get the struct dw_pcie_ep_func corresponding to + * the endpoint function + * @ep: DWC EP device + * @func_no: Function number of the endpoint device + * + * Return: struct dw_pcie_ep_func if success, NULL otherwise. + */ struct dw_pcie_ep_func * dw_pcie_ep_get_func_from_ep(struct dw_pcie_ep *ep, u8 func_no) { @@ -60,6 +77,11 @@ static void __dw_pcie_ep_reset_bar(struct dw_pcie *pci, u8 func_no, dw_pcie_dbi_ro_wr_dis(pci); } +/** + * dw_pcie_ep_reset_bar - Reset endpoint BAR + * @pci: DWC PCI device + * @bar: BAR number of the endpoint + */ void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar) { u8 func_no, funcs; @@ -439,6 +461,13 @@ static const struct pci_epc_ops epc_ops = { .get_features = dw_pcie_ep_get_features, }; +/** + * dw_pcie_ep_raise_intx_irq - Raise INTx IRQ to the host + * @ep: DWC EP device + * @func_no: Function number of the endpoint + * + * Return: 0 if success, errono otherwise. + */ int dw_pcie_ep_raise_intx_irq(struct dw_pcie_ep *ep, u8 func_no) { struct dw_pcie *pci = to_dw_pcie_from_ep(ep); @@ -450,6 +479,14 @@ int dw_pcie_ep_raise_intx_irq(struct dw_pcie_ep *ep, u8 func_no) } EXPORT_SYMBOL_GPL(dw_pcie_ep_raise_intx_irq); +/** + * dw_pcie_ep_raise_msi_irq - Raise MSI IRQ to the host + * @ep: DWC EP device + * @func_no: Function number of the endpoint + * @interrupt_num: Interrupt number to be raised + * + * Return: 0 if success, errono otherwise. + */ int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no, u8 interrupt_num) { @@ -498,6 +535,15 @@ int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no, } EXPORT_SYMBOL_GPL(dw_pcie_ep_raise_msi_irq); +/** + * dw_pcie_ep_raise_msix_irq_doorbell - Raise MSIX to the host using Doorbell + * method + * @ep: DWC EP device + * @func_no: Function number of the endpoint device + * @interrupt_num: Interrupt number to be raised + * + * Return: 0 if success, errno otherwise. + */ int dw_pcie_ep_raise_msix_irq_doorbell(struct dw_pcie_ep *ep, u8 func_no, u16 interrupt_num) { @@ -517,6 +563,14 @@ int dw_pcie_ep_raise_msix_irq_doorbell(struct dw_pcie_ep *ep, u8 func_no, return 0; } +/** + * dw_pcie_ep_raise_msix_irq - Raise MSIX to the host + * @ep: DWC EP device + * @func_no: Function number of the endpoint device + * @interrupt_num: Interrupt number to be raised + * + * Return: 0 if success, errno otherwise. + */ int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no, u16 interrupt_num) { @@ -564,6 +618,13 @@ int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no, return 0; } +/** + * dw_pcie_ep_exit - Deinitialize the endpoint device + * @ep: DWC EP device + * + * Deinitialize the endpoint device. EPC device is not destroyed since that will + * taken care by Devres. + */ void dw_pcie_ep_exit(struct dw_pcie_ep *ep) { struct dw_pcie *pci = to_dw_pcie_from_ep(ep); @@ -599,6 +660,14 @@ static unsigned int dw_pcie_ep_find_ext_capability(struct dw_pcie *pci, int cap) return 0; } +/** + * dw_pcie_ep_init_complete - Complete DWC EP initialization + * @ep: DWC EP device + * + * Complete the initialization of the registers (CSRs) specific to DWC EP. This + * API should be called only when the endpoint receives an active refclk (either + * from host or generated locally). + */ int dw_pcie_ep_init_complete(struct dw_pcie_ep *ep) { struct dw_pcie *pci = to_dw_pcie_from_ep(ep); @@ -716,6 +785,15 @@ int dw_pcie_ep_init_complete(struct dw_pcie_ep *ep) } EXPORT_SYMBOL_GPL(dw_pcie_ep_init_complete); +/** + * dw_pcie_ep_init - Initialize the endpoint device + * @ep: DWC EP device + * + * Initialize the endpoint device. Allocate resources and create the EPC + * device with the endpoint framework. + * + * Return: 0 if success, errno otherwise. + */ int dw_pcie_ep_init(struct dw_pcie_ep *ep) { int ret;