pcl724.c revision 90035c0886b256d75bced13b3b3cea5234aff136
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, comedi_devconfig * it); 60static int pcl724_detach(struct comedi_device * dev); 61 62typedef struct { 63 const char *name; // board name 64 int dio; // num of DIO 65 int numofports; // num of 8255 subdevices 66 unsigned int IRQbits; // allowed interrupts 67 unsigned int io_range; // len of IO space 68 char can_have96; 69 char is_pet48; 70} boardtype; 71 72static const boardtype boardtypes[] = { 73 {"pcl724", 24, 1, 0x00fc, PCL724_SIZE, 0, 0,}, 74 {"pcl722", 144, 6, 0x00fc, PCL722_SIZE, 1, 0,}, 75 {"pcl731", 48, 2, 0x9cfc, PCL731_SIZE, 0, 0,}, 76 {"acl7122", 144, 6, 0x9ee8, PCL722_SIZE, 1, 0,}, 77 {"acl7124", 24, 1, 0x00fc, PCL724_SIZE, 0, 0,}, 78 {"pet48dio", 48, 2, 0x9eb8, PET48_SIZE, 0, 1,}, 79}; 80 81#define n_boardtypes (sizeof(boardtypes)/sizeof(boardtype)) 82#define this_board ((const boardtype *)dev->board_ptr) 83 84static struct comedi_driver driver_pcl724 = { 85 driver_name:"pcl724", 86 module:THIS_MODULE, 87 attach:pcl724_attach, 88 detach:pcl724_detach, 89 board_name:&boardtypes[0].name, 90 num_names:n_boardtypes, 91 offset:sizeof(boardtype), 92}; 93 94COMEDI_INITCLEANUP(driver_pcl724); 95 96static int subdev_8255_cb(int dir, int port, int data, unsigned long arg) 97{ 98 unsigned long iobase = arg; 99 100 if (dir) { 101 outb(data, iobase + port); 102 return 0; 103 } else { 104 return inb(iobase + port); 105 } 106} 107 108static int subdev_8255mapped_cb(int dir, int port, int data, 109 unsigned long iobase) 110{ 111 int movport = SIZE_8255 * (iobase >> 12); 112 113 iobase &= 0x0fff; 114 115 if (dir) { 116 outb(port + movport, iobase); 117 outb(data, iobase + 1); 118 return 0; 119 } else { 120 outb(port + movport, iobase); 121 return inb(iobase + 1); 122 } 123} 124 125static int pcl724_attach(struct comedi_device * dev, comedi_devconfig * it) 126{ 127 unsigned long iobase; 128 unsigned int iorange; 129 int ret, i, n_subdevices; 130#ifdef PCL724_IRQ 131 unsigned int irq; 132#endif 133 134 iobase = it->options[0]; 135 iorange = this_board->io_range; 136 if ((this_board->can_have96) && ((it->options[1] == 1) 137 || (it->options[1] == 96))) 138 iorange = PCL722_96_SIZE; // PCL-724 in 96 DIO configuration 139 printk("comedi%d: pcl724: board=%s, 0x%03lx ", dev->minor, 140 this_board->name, iobase); 141 if (!request_region(iobase, iorange, "pcl724")) { 142 printk("I/O port conflict\n"); 143 return -EIO; 144 } 145 146 dev->iobase = iobase; 147 148 dev->board_name = this_board->name; 149 150#ifdef PCL724_IRQ 151 irq = 0; 152 if (this_board->IRQbits != 0) { /* board support IRQ */ 153 irq = it->options[1]; 154 if (irq) { /* we want to use IRQ */ 155 if (((1 << irq) & this_board->IRQbits) == 0) { 156 rt_printk 157 (", IRQ %u is out of allowed range, DISABLING IT", 158 irq); 159 irq = 0; /* Bad IRQ */ 160 } else { 161 if (comedi_request_irq(irq, interrupt_pcl724, 0, 162 "pcl724", dev)) { 163 rt_printk 164 (", unable to allocate IRQ %u, DISABLING IT", 165 irq); 166 irq = 0; /* Can't use IRQ */ 167 } else { 168 rt_printk(", irq=%u", irq); 169 } 170 } 171 } 172 } 173 174 dev->irq = irq; 175#endif 176 177 printk("\n"); 178 179 n_subdevices = this_board->numofports; 180 if ((this_board->can_have96) && ((it->options[1] == 1) 181 || (it->options[1] == 96))) 182 n_subdevices = 4; // PCL-724 in 96 DIO configuration 183 184 if ((ret = alloc_subdevices(dev, n_subdevices)) < 0) 185 return ret; 186 187 for (i = 0; i < dev->n_subdevices; i++) { 188 if (this_board->is_pet48) { 189 subdev_8255_init(dev, dev->subdevices + i, 190 subdev_8255mapped_cb, 191 (unsigned long)(dev->iobase + i * 0x1000)); 192 } else 193 subdev_8255_init(dev, dev->subdevices + i, 194 subdev_8255_cb, 195 (unsigned long)(dev->iobase + SIZE_8255 * i)); 196 }; 197 198 return 0; 199} 200 201static int pcl724_detach(struct comedi_device * dev) 202{ 203 int i; 204 205// printk("comedi%d: pcl724: remove\n",dev->minor); 206 207 for (i = 0; i < dev->n_subdevices; i++) { 208 subdev_8255_cleanup(dev, dev->subdevices + i); 209 } 210 211#ifdef PCL724_IRQ 212 if (dev->irq) { 213 comedi_free_irq(dev->irq, dev); 214 } 215#endif 216 217 release_region(dev->iobase, this_board->io_range); 218 219 return 0; 220} 221