pcl724.c revision 273f4bef1847ef69f30d7e55f8de876a92639f17
1/* 2 comedi/drivers/pcl724.c 3 4 Michal Dobes <dobes@tesnet.cz> 5 6 hardware driver for Advantech cards: 7 card: PCL-724, PCL-722, PCL-731 8 driver: pcl724, pcl722, pcl731 9 and ADLink cards: 10 card: ACL-7122, ACL-7124, PET-48DIO 11 driver: acl7122, acl7124, pet48dio 12 13 Options for PCL-724, PCL-731, ACL-7124 and PET-48DIO: 14 [0] - IO Base 15 16 Options for PCL-722 and ACL-7122: 17 [0] - IO Base 18 [1] - IRQ (0=disable IRQ) IRQ isn't supported at this time! 19 [2] -number of DIO: 20 0, 144: 144 DIO configuration 21 1, 96: 96 DIO configuration 22*/ 23/* 24Driver: pcl724 25Description: Advantech PCL-724, PCL-722, PCL-731 ADLink ACL-7122, ACL-7124, 26 PET-48DIO 27Author: Michal Dobes <dobes@tesnet.cz> 28Devices: [Advantech] PCL-724 (pcl724), PCL-722 (pcl722), PCL-731 (pcl731), 29 [ADLink] ACL-7122 (acl7122), ACL-7124 (acl7124), PET-48DIO (pet48dio) 30Status: untested 31 32This is driver for digital I/O boards PCL-722/724/731 with 144/24/48 DIO 33and for digital I/O boards ACL-7122/7124/PET-48DIO with 144/24/48 DIO. 34It need 8255.o for operations and only immediate mode is supported. 35See the source for configuration details. 36*/ 37/* 38 * check_driver overrides: 39 * struct comedi_insn 40 */ 41 42#include "../comedidev.h" 43 44#include <linux/ioport.h> 45#include <linux/delay.h> 46 47#include "8255.h" 48 49#define PCL722_SIZE 32 50#define PCL722_96_SIZE 16 51#define PCL724_SIZE 4 52#define PCL731_SIZE 8 53#define PET48_SIZE 2 54 55#define SIZE_8255 4 56 57/* #define PCL724_IRQ 1 no IRQ support now */ 58 59static int pcl724_attach(struct comedi_device *dev, 60 struct comedi_devconfig *it); 61static int pcl724_detach(struct comedi_device *dev); 62 63struct pcl724_board { 64 65 const char *name; /* board name */ 66 int dio; /* num of DIO */ 67 int numofports; /* num of 8255 subdevices */ 68 unsigned int IRQbits; /* allowed interrupts */ 69 unsigned int io_range; /* len of IO space */ 70 char can_have96; 71 char is_pet48; 72}; 73 74static const struct pcl724_board boardtypes[] = { 75 {"pcl724", 24, 1, 0x00fc, PCL724_SIZE, 0, 0,}, 76 {"pcl722", 144, 6, 0x00fc, PCL722_SIZE, 1, 0,}, 77 {"pcl731", 48, 2, 0x9cfc, PCL731_SIZE, 0, 0,}, 78 {"acl7122", 144, 6, 0x9ee8, PCL722_SIZE, 1, 0,}, 79 {"acl7124", 24, 1, 0x00fc, PCL724_SIZE, 0, 0,}, 80 {"pet48dio", 48, 2, 0x9eb8, PET48_SIZE, 0, 1,}, 81}; 82 83#define n_boardtypes (sizeof(boardtypes)/sizeof(struct pcl724_board)) 84#define this_board ((const struct pcl724_board *)dev->board_ptr) 85 86static struct comedi_driver driver_pcl724 = { 87 .driver_name = "pcl724", 88 .module = THIS_MODULE, 89 .attach = pcl724_attach, 90 .detach = pcl724_detach, 91 .board_name = &boardtypes[0].name, 92 .num_names = n_boardtypes, 93 .offset = sizeof(struct pcl724_board), 94}; 95 96static int __init driver_pcl724_init_module(void) 97{ 98 return comedi_driver_register(&driver_pcl724); 99} 100 101static void __exit driver_pcl724_cleanup_module(void) 102{ 103 comedi_driver_unregister(&driver_pcl724); 104} 105 106module_init(driver_pcl724_init_module); 107module_exit(driver_pcl724_cleanup_module); 108 109static int subdev_8255_cb(int dir, int port, int data, unsigned long arg) 110{ 111 unsigned long iobase = arg; 112 113 if (dir) { 114 outb(data, iobase + port); 115 return 0; 116 } else { 117 return inb(iobase + port); 118 } 119} 120 121static int subdev_8255mapped_cb(int dir, int port, int data, 122 unsigned long iobase) 123{ 124 int movport = SIZE_8255 * (iobase >> 12); 125 126 iobase &= 0x0fff; 127 128 if (dir) { 129 outb(port + movport, iobase); 130 outb(data, iobase + 1); 131 return 0; 132 } else { 133 outb(port + movport, iobase); 134 return inb(iobase + 1); 135 } 136} 137 138static int pcl724_attach(struct comedi_device *dev, struct comedi_devconfig *it) 139{ 140 unsigned long iobase; 141 unsigned int iorange; 142 int ret, i, n_subdevices; 143#ifdef PCL724_IRQ 144 unsigned int irq; 145#endif 146 147 iobase = it->options[0]; 148 iorange = this_board->io_range; 149 if ((this_board->can_have96) && ((it->options[1] == 1) 150 || (it->options[1] == 96))) 151 iorange = PCL722_96_SIZE; /* PCL-724 in 96 DIO configuration */ 152 printk(KERN_INFO "comedi%d: pcl724: board=%s, 0x%03lx ", dev->minor, 153 this_board->name, iobase); 154 if (!request_region(iobase, iorange, "pcl724")) { 155 printk("I/O port conflict\n"); 156 return -EIO; 157 } 158 159 dev->iobase = iobase; 160 161 dev->board_name = this_board->name; 162 163#ifdef PCL724_IRQ 164 irq = 0; 165 if (this_board->IRQbits != 0) { /* board support IRQ */ 166 irq = it->options[1]; 167 if (irq) { /* we want to use IRQ */ 168 if (((1 << irq) & this_board->IRQbits) == 0) { 169 printk(KERN_WARNING 170 ", IRQ %u is out of allowed range, " 171 "DISABLING IT", irq); 172 irq = 0; /* Bad IRQ */ 173 } else { 174 if (request_irq 175 (irq, interrupt_pcl724, 0, "pcl724", dev)) { 176 printk(KERN_WARNING 177 ", unable to allocate IRQ %u, " 178 "DISABLING IT", irq); 179 irq = 0; /* Can't use IRQ */ 180 } else { 181 printk(", irq=%u", irq); 182 } 183 } 184 } 185 } 186 187 dev->irq = irq; 188#endif 189 190 printk("\n"); 191 192 n_subdevices = this_board->numofports; 193 if ((this_board->can_have96) && ((it->options[1] == 1) 194 || (it->options[1] == 96))) 195 n_subdevices = 4; /* PCL-724 in 96 DIO configuration */ 196 197 ret = alloc_subdevices(dev, n_subdevices); 198 if (ret < 0) 199 return ret; 200 201 for (i = 0; i < dev->n_subdevices; i++) { 202 if (this_board->is_pet48) { 203 subdev_8255_init(dev, dev->subdevices + i, 204 subdev_8255mapped_cb, 205 (unsigned long)(dev->iobase + 206 i * 0x1000)); 207 } else 208 subdev_8255_init(dev, dev->subdevices + i, 209 subdev_8255_cb, 210 (unsigned long)(dev->iobase + 211 SIZE_8255 * i)); 212 } 213 214 return 0; 215} 216 217static int pcl724_detach(struct comedi_device *dev) 218{ 219 int i; 220 221 /* printk("comedi%d: pcl724: remove\n",dev->minor); */ 222 223 for (i = 0; i < dev->n_subdevices; i++) 224 subdev_8255_cleanup(dev, dev->subdevices + i); 225 226#ifdef PCL724_IRQ 227 if (dev->irq) 228 free_irq(dev->irq, dev); 229#endif 230 231 release_region(dev->iobase, this_board->io_range); 232 233 return 0; 234} 235 236MODULE_AUTHOR("Comedi http://www.comedi.org"); 237MODULE_DESCRIPTION("Comedi low-level driver"); 238MODULE_LICENSE("GPL"); 239