// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2008 Sebastian Haas (initial chardev implementation) * Copyright (C) 2010 Markus Plessing <[email protected]> * Rework for mainline by Oliver Hartkopp <[email protected]> */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/interrupt.h> #include <linux/netdevice.h> #include <linux/delay.h> #include <linux/io.h> #include <pcmcia/cistpl.h> #include <pcmcia/ds.h> #include <linux/can.h> #include <linux/can/dev.h> #include "sja1000.h" #define DRV_NAME … MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; #define EMS_PCMCIA_MAX_CHAN … struct ems_pcmcia_card { … }; #define EMS_PCMCIA_CAN_CLOCK … /* * The board configuration is probably following: * RX1 is connected to ground. * TX1 is not connected. * CLKO is not connected. * Setting the OCR register to 0xDA is a good idea. * This means normal output mode , push-pull and the correct polarity. */ #define EMS_PCMCIA_OCR … /* * In the CDR register, you should set CBP to 1. * You will probably also want to set the clock divider value to 7 * (meaning direct oscillator output) because the second SJA1000 chip * is driven by the first one CLKOUT output. */ #define EMS_PCMCIA_CDR … #define EMS_PCMCIA_MEM_SIZE … #define EMS_PCMCIA_CAN_BASE_OFFSET … #define EMS_PCMCIA_CAN_CTRL_SIZE … #define EMS_CMD_RESET … #define EMS_CMD_MAP … #define EMS_CMD_UMAP … static struct pcmcia_device_id ems_pcmcia_tbl[] = …; MODULE_DEVICE_TABLE(pcmcia, ems_pcmcia_tbl); static u8 ems_pcmcia_read_reg(const struct sja1000_priv *priv, int port) { … } static void ems_pcmcia_write_reg(const struct sja1000_priv *priv, int port, u8 val) { … } static irqreturn_t ems_pcmcia_interrupt(int irq, void *dev_id) { … } /* * Check if a CAN controller is present at the specified location * by trying to set 'em into the PeliCAN mode */ static inline int ems_pcmcia_check_chan(struct sja1000_priv *priv) { … } static void ems_pcmcia_del_card(struct pcmcia_device *pdev) { … } /* * Probe PCI device for EMS CAN signature and register each available * CAN channel to SJA1000 Socket-CAN subsystem. */ static int ems_pcmcia_add_card(struct pcmcia_device *pdev, unsigned long base) { … } /* * Setup PCMCIA socket and probe for EMS CPC-CARD */ static int ems_pcmcia_probe(struct pcmcia_device *dev) { … } /* * Release claimed resources */ static void ems_pcmcia_remove(struct pcmcia_device *dev) { … } static struct pcmcia_driver ems_pcmcia_driver = …; module_pcmcia_driver(…);
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