1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /******************************************************************************* 3 * 4 * CTU CAN FD IP Core 5 * 6 * Copyright (C) 2015-2018 Ondrej Ille <ondrej.ille@gmail.com> FEE CTU 7 * Copyright (C) 2018-2021 Ondrej Ille <ondrej.ille@gmail.com> self-funded 8 * Copyright (C) 2018-2019 Martin Jerabek <martin.jerabek01@gmail.com> FEE CTU 9 * Copyright (C) 2018-2021 Pavel Pisa <pisa@cmp.felk.cvut.cz> FEE CTU/self-funded 10 * 11 * Project advisors: 12 * Jiri Novak <jnovak@fel.cvut.cz> 13 * Pavel Pisa <pisa@cmp.felk.cvut.cz> 14 * 15 * Department of Measurement (http://meas.fel.cvut.cz/) 16 * Faculty of Electrical Engineering (http://www.fel.cvut.cz) 17 * Czech Technical University (http://www.cvut.cz/) 18 ******************************************************************************/ 19 20 #ifndef __CTUCANFD__ 21 #define __CTUCANFD__ 22 23 #include <linux/netdevice.h> 24 #include <linux/can/dev.h> 25 #include <linux/list.h> 26 27 enum ctu_can_fd_can_registers; 28 29 struct ctucan_priv { 30 struct can_priv can; /* must be first member! */ 31 32 void __iomem *mem_base; 33 u32 (*read_reg)(struct ctucan_priv *priv, 34 enum ctu_can_fd_can_registers reg); 35 void (*write_reg)(struct ctucan_priv *priv, 36 enum ctu_can_fd_can_registers reg, u32 val); 37 38 unsigned int txb_head; 39 unsigned int txb_tail; 40 u32 txb_prio; 41 unsigned int ntxbufs; 42 spinlock_t tx_lock; /* spinlock to serialize allocation and processing of TX buffers */ 43 44 struct napi_struct napi; 45 struct device *dev; 46 struct clk *can_clk; 47 48 int irq_flags; 49 unsigned long drv_flags; 50 51 u32 rxfrm_first_word; 52 53 struct list_head peers_on_pdev; 54 }; 55 56 /** 57 * ctucan_probe_common - Device type independent registration call 58 * 59 * This function does all the memory allocation and registration for the CAN 60 * device. 61 * 62 * @dev: Handle to the generic device structure 63 * @addr: Base address of CTU CAN FD core address 64 * @irq: Interrupt number 65 * @ntxbufs: Number of implemented Tx buffers 66 * @can_clk_rate: Clock rate, if 0 then clock are taken from device node 67 * @pm_enable_call: Whether pm_runtime_enable should be called 68 * @set_drvdata_fnc: Function to set network driver data for physical device 69 * 70 * Return: 0 on success and failure value on error 71 */ 72 int ctucan_probe_common(struct device *dev, void __iomem *addr, 73 int irq, unsigned int ntxbufs, 74 unsigned long can_clk_rate, 75 int pm_enable_call, 76 void (*set_drvdata_fnc)(struct device *dev, 77 struct net_device *ndev)); 78 79 int ctucan_suspend(struct device *dev) __maybe_unused; 80 int ctucan_resume(struct device *dev) __maybe_unused; 81 82 #endif /*__CTUCANFD__*/ 83