X-Git-Url: http://rtime.felk.cvut.cz/gitweb/lincan.git/blobdiff_plain/6234a9dc385e5a9258a84227b2eab09bbb099c27..04ac67cc3cac14cd601daacd0592121ec0b84012:/lincan/src/adlink7841.c diff --git a/lincan/src/adlink7841.c b/lincan/src/adlink7841.c index 248f480..d65a2a9 100644 --- a/lincan/src/adlink7841.c +++ b/lincan/src/adlink7841.c @@ -1,11 +1,36 @@ -/* adlink7841.c - support for ADLINK 7841 cards - * Linux CAN-bus device driver. - * Written by Arnaud Westenberg email:arnaud@wanadoo.nl - * Rewritten for new CAN queues by Pavel Pisa - OCERA team member - * email:pisa@cmp.felk.cvut.cz - * This software is released under the GPL-License. - * Version lincan-0.3 17 Jun 2004 - */ +/**************************************************************************/ +/* File: adlink7841.c - support for ADLINK 7841 cards */ +/* */ +/* LinCAN - (Not only) Linux CAN bus driver */ +/* Copyright (C) 2002-2009 DCE FEE CTU Prague */ +/* Copyright (C) 2002-2009 Pavel Pisa */ +/* Funded by OCERA and FRESCOR IST projects */ +/* Based on CAN driver code by Arnaud Westenberg */ +/* */ +/* LinCAN is free software; you can redistribute it and/or modify it */ +/* under terms of the GNU General Public License as published by the */ +/* Free Software Foundation; either version 2, or (at your option) any */ +/* later version. LinCAN is distributed in the hope that it will be */ +/* useful, but WITHOUT ANY WARRANTY; without even the implied warranty */ +/* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU */ +/* General Public License for more details. You should have received a */ +/* copy of the GNU General Public License along with LinCAN; see file */ +/* COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, */ +/* Cambridge, MA 02139, USA. */ +/* */ +/* To allow use of LinCAN in the compact embedded systems firmware */ +/* and RT-executives (RTEMS for example), main authors agree with next */ +/* special exception: */ +/* */ +/* Including LinCAN header files in a file, instantiating LinCAN generics */ +/* or templates, or linking other files with LinCAN objects to produce */ +/* an application image/executable, does not by itself cause the */ +/* resulting application image/executable to be covered by */ +/* the GNU General Public License. */ +/* This exception does not however invalidate any other reasons */ +/* why the executable file might be covered by the GNU Public License. */ +/* Publication of enhanced or derived LinCAN files is required although. */ +/**************************************************************************/ #include "../include/can.h" #include "../include/can_sysdep.h" @@ -28,13 +53,13 @@ /* -You need to know the following: -" RX1 is connected to ground. -" TX1 is not connected. -" CLKO is not connected. -" Setting the OCR register to 0xFA is a good idea. - This means normal output mode , push-pull and the correct polarity. -" In the CDR register, you should set CBP to 1. +You need to know the following: +" RX1 is connected to ground. +" TX1 is not connected. +" CLKO is not connected. +" Setting the OCR register to 0xFA is a good idea. + This means normal output mode , push-pull and the correct polarity. +" In the CDR register, you should set CBP to 1. You will probably also want to set the clock divider value to 0 (meaning divide-by-2), the Pelican bit, and the clock-off bit (you have no need for CLKOUT anyway.) @@ -76,7 +101,7 @@ int adlink7841_request_io(struct candevice_t *candev) error_io: pci_release_region(candev->sysdevptr.pcidev, 1); #endif /*(LINUX_VERSION_CODE > KERNEL_VERSION(2,4,21))*/ - + return -ENODEV; } @@ -97,7 +122,7 @@ int adlink7841_release_io(struct candevice_t *candev) void adlink7841_write_register(unsigned data, can_ioptr_t address) { - can_outb(data,address); + can_outb(data,address); } unsigned adlink7841_read_register(can_ioptr_t address) @@ -139,42 +164,43 @@ int adlink7841_reset(struct candevice_t *candev) adlink7841_write_register(cdr|sjaCDR_PELICAN, chip->chip_base_addr+SJACDR); adlink7841_write_register(0, chip->chip_base_addr+SJAIER); - + adlink7841_read_register(chip->chip_base_addr+SJAIR); } - + adlink7841_connect_irq(candev); return 0; -} +} int adlink7841_init_hw_data(struct candevice_t *candev) { - struct pci_dev *pcidev = NULL; + struct pci_dev *pcidev; int i; - do { - pcidev = pci_find_device(ADLINK7841_PCI_VENDOR_ID, ADLINK7841_PCI_PRODUCT_ID, pcidev); - if(pcidev == NULL) return -ENODEV; - } while(can_check_dev_taken(pcidev)); - + pcidev = can_pci_get_next_untaken_device(ADLINK7841_PCI_VENDOR_ID, ADLINK7841_PCI_PRODUCT_ID); + if(pcidev == NULL) + return -ENODEV; + if (pci_enable_device (pcidev)){ printk(KERN_CRIT "Setup of ADLINK7841 failed\n"); + can_pci_dev_put(pcidev); return -EIO; } candev->sysdevptr.pcidev=pcidev; - + for(i=1;i<3;i++){ if(!(pci_resource_flags(pcidev,i)&IORESOURCE_IO)){ printk(KERN_CRIT "ADLINK7841 region %d is not IO\n",i); + can_pci_dev_put(pcidev); return -EIO; } } candev->dev_base_addr=pci_resource_start(pcidev,1); /* PLX 9050 BASE*/ candev->io_addr=pci_resource_start(pcidev,2); /*IO window for SJA1000 chips*/ candev->res_addr=pci_resource_start(pcidev,1); /*reserved*/ - + /*candev->flags |= CANDEV_PROGRAMMABLE_IRQ;*/ candev->nr_82527_chips=0; @@ -184,12 +210,18 @@ int adlink7841_init_hw_data(struct candevice_t *candev) return 0; } +void adlink7841_done_hw_data(struct candevice_t *candev) +{ + struct pci_dev *pcidev = candev->sysdevptr.pcidev; + can_pci_dev_put(pcidev); +} + int adlink7841_init_chip_data(struct candevice_t *candev, int chipnr) { if(candev->sysdevptr.pcidev==NULL) return -ENODEV; - + candev->chip[chipnr]->chip_irq=candev->sysdevptr.pcidev->irq; sja1000p_fill_chipspecops(candev->chip[chipnr]); @@ -205,7 +237,7 @@ int adlink7841_init_chip_data(struct candevice_t *candev, int chipnr) candev->chip[chipnr]->flags |= CHIP_IRQ_PCI; return 0; -} +} int adlink7841_init_obj_data(struct canchip_t *chip, int objnr) { @@ -225,6 +257,7 @@ int adlink7841_register(struct hwspecops_t *hwspecops) hwspecops->release_io = adlink7841_release_io; hwspecops->reset = adlink7841_reset; hwspecops->init_hw_data = adlink7841_init_hw_data; + hwspecops->done_hw_data = adlink7841_done_hw_data; hwspecops->init_chip_data = adlink7841_init_chip_data; hwspecops->init_obj_data = adlink7841_init_obj_data; hwspecops->write_register = adlink7841_write_register;