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Diffstat (limited to 'drivers/staging/comedi/drivers/pcl724.c')
-rw-r--r--drivers/staging/comedi/drivers/pcl724.c219
1 files changed, 85 insertions, 134 deletions
diff --git a/drivers/staging/comedi/drivers/pcl724.c b/drivers/staging/comedi/drivers/pcl724.c
index 4f033d88eeca..cea657c7801d 100644
--- a/drivers/staging/comedi/drivers/pcl724.c
+++ b/drivers/staging/comedi/drivers/pcl724.c
@@ -1,42 +1,28 @@
/*
- comedi/drivers/pcl724.c
-
- Michal Dobes <dobes@tesnet.cz>
-
- hardware driver for Advantech cards:
- card: PCL-724, PCL-722, PCL-731
- driver: pcl724, pcl722, pcl731
- and ADLink cards:
- card: ACL-7122, ACL-7124, PET-48DIO
- driver: acl7122, acl7124, pet48dio
-
- Options for PCL-724, PCL-731, ACL-7124 and PET-48DIO:
- [0] - IO Base
-
- Options for PCL-722 and ACL-7122:
- [0] - IO Base
- [1] - IRQ (0=disable IRQ) IRQ isn't supported at this time!
- [2] -number of DIO:
- 0, 144: 144 DIO configuration
- 1, 96: 96 DIO configuration
-*/
-/*
-Driver: pcl724
-Description: Advantech PCL-724, PCL-722, PCL-731 ADLink ACL-7122, ACL-7124,
- PET-48DIO
-Author: Michal Dobes <dobes@tesnet.cz>
-Devices: [Advantech] PCL-724 (pcl724), PCL-722 (pcl722), PCL-731 (pcl731),
- [ADLink] ACL-7122 (acl7122), ACL-7124 (acl7124), PET-48DIO (pet48dio)
-Status: untested
-
-This is driver for digital I/O boards PCL-722/724/731 with 144/24/48 DIO
-and for digital I/O boards ACL-7122/7124/PET-48DIO with 144/24/48 DIO.
-It need 8255.o for operations and only immediate mode is supported.
-See the source for configuration details.
-*/
+ * pcl724.c
+ * Comedi driver for 8255 based ISA DIO boards
+ *
+ * Michal Dobes <dobes@tesnet.cz>
+ */
+
/*
- * check_driver overrides:
- * struct comedi_insn
+ * Driver: pcl724
+ * Description: Comedi driver for 8255 based ISA DIO boards
+ * Devices: (Advantech) PCL-724 [pcl724]
+ * (Advantech) PCL-722 [pcl722]
+ * (Advantech) PCL-731 [pcl731]
+ * (ADLink) ACL-7122 [acl7122]
+ * (ADLink) ACL-7124 [acl7124]
+ * (ADLink) PET-48DIO [pet48dio]
+ * Author: Michal Dobes <dobes@tesnet.cz>
+ * Status: untested
+ *
+ * Configuration options:
+ * [0] - IO Base
+ * [1] - IRQ (not supported)
+ * [2] - number of DIO (pcl722 and acl7122 boards)
+ * 0, 144: 144 DIO configuration
+ * 1, 96: 96 DIO configuration
*/
#include "../comedidev.h"
@@ -46,40 +32,48 @@ See the source for configuration details.
#include "8255.h"
-#define PCL722_SIZE 32
-#define PCL722_96_SIZE 16
-#define PCL724_SIZE 4
-#define PCL731_SIZE 8
-#define PET48_SIZE 2
-
#define SIZE_8255 4
-/* #define PCL724_IRQ 1 no IRQ support now */
-
struct pcl724_board {
-
- const char *name; /* board name */
- int dio; /* num of DIO */
- int numofports; /* num of 8255 subdevices */
- unsigned int IRQbits; /* allowed interrupts */
- unsigned int io_range; /* len of IO space */
- char can_have96;
- char is_pet48;
+ const char *name;
+ unsigned int io_range;
+ unsigned int can_have96:1;
+ unsigned int is_pet48:1;
+ int numofports;
};
-static int subdev_8255_cb(int dir, int port, int data, unsigned long arg)
-{
- unsigned long iobase = arg;
-
- if (dir) {
- outb(data, iobase + port);
- return 0;
- } else {
- return inb(iobase + port);
- }
-}
+static const struct pcl724_board boardtypes[] = {
+ {
+ .name = "pcl724",
+ .io_range = 0x04,
+ .numofports = 1, /* 24 DIO channels */
+ }, {
+ .name = "pcl722",
+ .io_range = 0x20,
+ .can_have96 = 1,
+ .numofports = 6, /* 144 (or 96) DIO channels */
+ }, {
+ .name = "pcl731",
+ .io_range = 0x08,
+ .numofports = 2, /* 48 DIO channels */
+ }, {
+ .name = "acl7122",
+ .io_range = 0x20,
+ .can_have96 = 1,
+ .numofports = 6, /* 144 (or 96) DIO channels */
+ }, {
+ .name = "acl7124",
+ .io_range = 0x04,
+ .numofports = 1, /* 24 DIO channels */
+ }, {
+ .name = "pet48dio",
+ .io_range = 0x02,
+ .is_pet48 = 1,
+ .numofports = 2, /* 48 DIO channels */
+ },
+};
-static int subdev_8255mapped_cb(int dir, int port, int data,
+static int pcl724_8255mapped_io(int dir, int port, int data,
unsigned long iobase)
{
int movport = SIZE_8255 * (iobase >> 12);
@@ -96,57 +90,30 @@ static int subdev_8255mapped_cb(int dir, int port, int data,
}
}
-static int pcl724_attach(struct comedi_device *dev, struct comedi_devconfig *it)
+static int pcl724_attach(struct comedi_device *dev,
+ struct comedi_devconfig *it)
{
const struct pcl724_board *board = comedi_board(dev);
struct comedi_subdevice *s;
+ unsigned long iobase;
unsigned int iorange;
- int ret, i, n_subdevices;
-#ifdef PCL724_IRQ
- unsigned int irq;
-#endif
+ int n_subdevices;
+ int ret;
+ int i;
iorange = board->io_range;
- if ((board->can_have96) &&
- ((it->options[1] == 1) || (it->options[1] == 96)))
- iorange = PCL722_96_SIZE; /* PCL-724 in 96 DIO configuration */
- ret = comedi_request_region(dev, it->options[0], iorange);
- if (ret)
- return ret;
+ n_subdevices = board->numofports;
-#ifdef PCL724_IRQ
- irq = 0;
- if (board->IRQbits != 0) { /* board support IRQ */
- irq = it->options[1];
- if (irq) { /* we want to use IRQ */
- if (((1 << irq) & board->IRQbits) == 0) {
- printk(KERN_WARNING
- ", IRQ %u is out of allowed range, "
- "DISABLING IT", irq);
- irq = 0; /* Bad IRQ */
- } else {
- if (request_irq(irq, interrupt_pcl724, 0,
- dev->board_name, dev)) {
- printk(KERN_WARNING
- ", unable to allocate IRQ %u, "
- "DISABLING IT", irq);
- irq = 0; /* Can't use IRQ */
- } else {
- printk(", irq=%u", irq);
- }
- }
- }
+ /* Handle PCL-724 in 96 DIO configuration */
+ if (board->can_have96 &&
+ (it->options[2] == 1 || it->options[2] == 96)) {
+ iorange = 0x10;
+ n_subdevices = 4;
}
- dev->irq = irq;
-#endif
-
- printk("\n");
-
- n_subdevices = board->numofports;
- if ((board->can_have96) && ((it->options[1] == 1)
- || (it->options[1] == 96)))
- n_subdevices = 4; /* PCL-724 in 96 DIO configuration */
+ ret = comedi_request_region(dev, it->options[0], iorange);
+ if (ret)
+ return ret;
ret = comedi_alloc_subdevices(dev, n_subdevices);
if (ret)
@@ -155,41 +122,25 @@ static int pcl724_attach(struct comedi_device *dev, struct comedi_devconfig *it)
for (i = 0; i < dev->n_subdevices; i++) {
s = &dev->subdevices[i];
if (board->is_pet48) {
- subdev_8255_init(dev, s, subdev_8255mapped_cb,
- (unsigned long)(dev->iobase +
- i * 0x1000));
- } else
- subdev_8255_init(dev, s, subdev_8255_cb,
- (unsigned long)(dev->iobase +
- SIZE_8255 * i));
+ iobase = dev->iobase + (i * 0x1000);
+ ret = subdev_8255_init(dev, s, pcl724_8255mapped_io,
+ iobase);
+ } else {
+ iobase = dev->iobase + (i * SIZE_8255);
+ ret = subdev_8255_init(dev, s, NULL, iobase);
+ }
+ if (ret)
+ return ret;
}
return 0;
}
-static void pcl724_detach(struct comedi_device *dev)
-{
- int i;
-
- for (i = 0; i < dev->n_subdevices; i++)
- comedi_spriv_free(dev, i);
- comedi_legacy_detach(dev);
-}
-
-static const struct pcl724_board boardtypes[] = {
- { "pcl724", 24, 1, 0x00fc, PCL724_SIZE, 0, 0, },
- { "pcl722", 144, 6, 0x00fc, PCL722_SIZE, 1, 0, },
- { "pcl731", 48, 2, 0x9cfc, PCL731_SIZE, 0, 0, },
- { "acl7122", 144, 6, 0x9ee8, PCL722_SIZE, 1, 0, },
- { "acl7124", 24, 1, 0x00fc, PCL724_SIZE, 0, 0, },
- { "pet48dio", 48, 2, 0x9eb8, PET48_SIZE, 0, 1, },
-};
-
static struct comedi_driver pcl724_driver = {
.driver_name = "pcl724",
.module = THIS_MODULE,
.attach = pcl724_attach,
- .detach = pcl724_detach,
+ .detach = comedi_legacy_detach,
.board_name = &boardtypes[0].name,
.num_names = ARRAY_SIZE(boardtypes),
.offset = sizeof(struct pcl724_board),
@@ -197,5 +148,5 @@ static struct comedi_driver pcl724_driver = {
module_comedi_driver(pcl724_driver);
MODULE_AUTHOR("Comedi http://www.comedi.org");
-MODULE_DESCRIPTION("Comedi low-level driver");
+MODULE_DESCRIPTION("Comedi driver for 8255 based ISA DIO boards");
MODULE_LICENSE("GPL");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.