* says P1).
*/
-#include <linux/version.h>
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kref.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#include <linux/usb.h>
+
#include "../comedidev.h"
#include "dt9812.h"
-#define DT9812_NUM_SLOTS 16
+#define DT9812_NUM_SLOTS 16
static DECLARE_MUTEX(dt9812_mutex);
static struct usb_device_id dt9812_table[] = {
{USB_DEVICE(0x0867, 0x9812)},
- {} /* Terminating entry */
+ { } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, dt9812_table);
static slot_dt9812_t dt9812[DT9812_NUM_SLOTS];
-// Useful shorthand access to private data
+/* Useful shorthand access to private data */
#define devpriv ((comedi_dt9812_t *)dev->private)
static inline usb_dt9812_t *to_dt9812_dev(struct kref *d)
kfree(dev);
}
-static int dt9812_read_info(usb_dt9812_t * dev,
- int offset, void *buf, size_t buf_size)
+static int dt9812_read_info(usb_dt9812_t *dev, int offset, void *buf,
+ size_t buf_size)
{
dt9812_usb_cmd_t cmd;
int count, retval;
cpu_to_le16(DT9812_DIAGS_BOARD_INFO_ADDR + offset);
cmd.u.flash_data_info.numbytes = cpu_to_le16(buf_size);
+ /* DT9812 only responds to 32 byte writes!! */
count = 32;
- retval = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, dev->command_write.addr), &cmd, 32, // DT9812 only responds to 32 byte writes!!
- &count, HZ * 1);
- if (retval == 0) {
- retval = usb_bulk_msg(dev->udev,
- usb_rcvbulkpipe(dev->udev, dev->command_read.addr),
- buf, buf_size, &count, HZ * 1);
- }
+ retval = usb_bulk_msg(dev->udev,
+ usb_sndbulkpipe(dev->udev,
+ dev->command_write.addr),
+ &cmd, 32, &count, HZ * 1);
+ if (retval)
+ return retval;
+ retval = usb_bulk_msg(dev->udev,
+ usb_rcvbulkpipe(dev->udev,
+ dev->command_read.addr),
+ buf, buf_size, &count, HZ * 1);
return retval;
}
-static int dt9812_read_multiple_registers(usb_dt9812_t * dev,
- int reg_count, u8 * address, u8 * value)
+static int dt9812_read_multiple_registers(usb_dt9812_t *dev, int reg_count,
+ u8 *address, u8 *value)
{
dt9812_usb_cmd_t cmd;
int i, count, retval;
cmd.cmd = cpu_to_le32(DT9812_R_MULTI_BYTE_REG);
cmd.u.read_multi_info.count = reg_count;
- for (i = 0; i < reg_count; i++) {
+ for (i = 0; i < reg_count; i++)
cmd.u.read_multi_info.address[i] = address[i];
- }
+
+ /* DT9812 only responds to 32 byte writes!! */
count = 32;
- retval = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, dev->command_write.addr), &cmd, 32, // DT9812 only responds to 32 byte writes!!
- &count, HZ * 1);
- if (retval == 0) {
- retval = usb_bulk_msg(dev->udev,
- usb_rcvbulkpipe(dev->udev, dev->command_read.addr),
- value, reg_count, &count, HZ * 1);
- }
+ retval = usb_bulk_msg(dev->udev,
+ usb_sndbulkpipe(dev->udev,
+ dev->command_write.addr),
+ &cmd, 32, &count, HZ * 1);
+ if (retval)
+ return retval;
+ retval = usb_bulk_msg(dev->udev,
+ usb_rcvbulkpipe(dev->udev,
+ dev->command_read.addr),
+ value, reg_count, &count, HZ * 1);
return retval;
}
-static int dt9812_write_multiple_registers(usb_dt9812_t * dev,
- int reg_count, u8 * address, u8 * value)
+static int dt9812_write_multiple_registers(usb_dt9812_t *dev, int reg_count,
+ u8 *address, u8 *value)
{
dt9812_usb_cmd_t cmd;
int i, count, retval;
cmd.u.write_multi_info.write[i].address = address[i];
cmd.u.write_multi_info.write[i].value = value[i];
}
- retval = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, dev->command_write.addr), &cmd, 32, // DT9812 only responds to 32 byte writes!!
- &count, HZ * 1);
+ /* DT9812 only responds to 32 byte writes!! */
+ retval = usb_bulk_msg(dev->udev,
+ usb_sndbulkpipe(dev->udev,
+ dev->command_write.addr),
+ &cmd, 32, &count, HZ * 1);
return retval;
}
-static int dt9812_rmw_multiple_registers(usb_dt9812_t * dev,
- int reg_count, dt9812_rmw_byte_t rmw[])
+static int dt9812_rmw_multiple_registers(usb_dt9812_t *dev, int reg_count,
+ dt9812_rmw_byte_t rmw[])
{
dt9812_usb_cmd_t cmd;
int i, count, retval;
cmd.cmd = cpu_to_le32(DT9812_RMW_MULTI_BYTE_REG);
cmd.u.rmw_multi_info.count = reg_count;
- for (i = 0; i < reg_count; i++) {
+ for (i = 0; i < reg_count; i++)
cmd.u.rmw_multi_info.rmw[i] = rmw[i];
- }
- retval = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, dev->command_write.addr), &cmd, 32, // DT9812 only responds to 32 byte writes!!
- &count, HZ * 1);
+
+ /* DT9812 only responds to 32 byte writes!! */
+ retval = usb_bulk_msg(dev->udev,
+ usb_sndbulkpipe(dev->udev,
+ dev->command_write.addr),
+ &cmd, 32, &count, HZ * 1);
return retval;
}
-static int dt9812_digital_in(slot_dt9812_t * slot, u8 * bits)
+static int dt9812_digital_in(slot_dt9812_t *slot, u8 *bits)
{
int result = -ENODEV;
u8 value[2];
result = dt9812_read_multiple_registers(slot->usb, 2, reg,
- value);
+ value);
if (result == 0) {
- // bits 0-6 in F020_SFR_P3 are bits 0-6 in the digital input port
- // bit 3 in F020_SFR_P1 is bit 7 in the digital input port
+ /*
+ * bits 0-6 in F020_SFR_P3 are bits 0-6 in the digital
+ * input port bit 3 in F020_SFR_P1 is bit 7 in the
+ * digital input port
+ */
*bits = (value[0] & 0x7f) | ((value[1] & 0x08) << 4);
-// printk("%2.2x, %2.2x -> %2.2x\n", value[0], value[1], *bits);
+ /* printk("%2.2x, %2.2x -> %2.2x\n",
+ value[0], value[1], *bits); */
}
}
up(&slot->mutex);
return result;
}
-static int dt9812_digital_out(slot_dt9812_t * slot, u8 bits)
+static int dt9812_digital_out(slot_dt9812_t *slot, u8 bits)
{
int result = -ENODEV;
reg[0] = F020_SFR_P2;
value[0] = bits;
result = dt9812_write_multiple_registers(slot->usb, 1, reg,
- value);
+ value);
slot->usb->digital_out_shadow = bits;
}
up(&slot->mutex);
return result;
}
-static int dt9812_digital_out_shadow(slot_dt9812_t * slot, u8 * bits)
+static int dt9812_digital_out_shadow(slot_dt9812_t *slot, u8 *bits)
{
int result = -ENODEV;
return result;
}
-static void dt9812_configure_mux(usb_dt9812_t * dev,
- dt9812_rmw_byte_t * rmw, int channel)
+static void dt9812_configure_mux(usb_dt9812_t *dev, dt9812_rmw_byte_t *rmw,
+ int channel)
{
if (dev->device == DT9812_DEVID_DT9812_10) {
- // In the DT9812/10V MUX is selected by P1.5-7
+ /* In the DT9812/10V MUX is selected by P1.5-7 */
rmw->address = F020_SFR_P1;
rmw->and_mask = 0xe0;
rmw->or_value = channel << 5;
} else {
- // In the DT9812/2.5V, the internal mux is selected by bits 0:2
+ /* In the DT9812/2.5V, internal mux is selected by bits 0:2 */
rmw->address = F020_SFR_AMX0SL;
rmw->and_mask = 0xff;
rmw->or_value = channel & 0x07;
}
}
-static void dt9812_configure_gain(usb_dt9812_t * dev,
- dt9812_rmw_byte_t * rmw, dt9812_gain_t gain)
+static void dt9812_configure_gain(usb_dt9812_t *dev, dt9812_rmw_byte_t *rmw,
+ dt9812_gain_t gain)
{
if (dev->device == DT9812_DEVID_DT9812_10) {
- // In the DT9812/10V, there is an external gain of 0.5
+ /* In the DT9812/10V, there is an external gain of 0.5 */
gain <<= 1;
}
rmw->address = F020_SFR_ADC0CF;
- rmw->and_mask =
- F020_MASK_ADC0CF_AMP0GN2 |
- F020_MASK_ADC0CF_AMP0GN1 | F020_MASK_ADC0CF_AMP0GN0;
+ rmw->and_mask = F020_MASK_ADC0CF_AMP0GN2 |
+ F020_MASK_ADC0CF_AMP0GN1 |
+ F020_MASK_ADC0CF_AMP0GN0;
switch (gain) {
- // 000 -> Gain = 1
- // 001 -> Gain = 2
- // 010 -> Gain = 4
- // 011 -> Gain = 8
- // 10x -> Gain = 16
- // 11x -> Gain = 0.5
- case DT9812_GAIN_0PT5:{
- rmw->or_value = F020_MASK_ADC0CF_AMP0GN2
- || F020_MASK_ADC0CF_AMP0GN1;
- }
+ /*
+ * 000 -> Gain = 1
+ * 001 -> Gain = 2
+ * 010 -> Gain = 4
+ * 011 -> Gain = 8
+ * 10x -> Gain = 16
+ * 11x -> Gain = 0.5
+ */
+ case DT9812_GAIN_0PT5:
+ rmw->or_value = F020_MASK_ADC0CF_AMP0GN2 ||
+ F020_MASK_ADC0CF_AMP0GN1;
break;
- case DT9812_GAIN_1:{
- rmw->or_value = 0x00;
- }
+ case DT9812_GAIN_1:
+ rmw->or_value = 0x00;
break;
- case DT9812_GAIN_2:{
- rmw->or_value = F020_MASK_ADC0CF_AMP0GN0;
- }
+ case DT9812_GAIN_2:
+ rmw->or_value = F020_MASK_ADC0CF_AMP0GN0;
break;
- case DT9812_GAIN_4:{
- rmw->or_value = F020_MASK_ADC0CF_AMP0GN1;
- }
+ case DT9812_GAIN_4:
+ rmw->or_value = F020_MASK_ADC0CF_AMP0GN1;
break;
- case DT9812_GAIN_8:{
- rmw->or_value = F020_MASK_ADC0CF_AMP0GN1
- || F020_MASK_ADC0CF_AMP0GN0;
- }
+ case DT9812_GAIN_8:
+ rmw->or_value = F020_MASK_ADC0CF_AMP0GN1 ||
+ F020_MASK_ADC0CF_AMP0GN0;
break;
- case DT9812_GAIN_16:{
- rmw->or_value = F020_MASK_ADC0CF_AMP0GN2;
- }
+ case DT9812_GAIN_16:
+ rmw->or_value = F020_MASK_ADC0CF_AMP0GN2;
break;
- default:{
- err("Illegal gain %d\n", gain);
- }
+ default:
+ err("Illegal gain %d\n", gain);
+
}
}
-static int dt9812_analog_in(slot_dt9812_t * slot,
- int channel, u16 * value, dt9812_gain_t gain)
+static int dt9812_analog_in(slot_dt9812_t *slot, int channel, u16 *value,
+ dt9812_gain_t gain)
{
+ dt9812_rmw_byte_t rmw[3];
+ u8 reg[3] = {
+ F020_SFR_ADC0CN,
+ F020_SFR_ADC0H,
+ F020_SFR_ADC0L
+ };
+ u8 val[3];
int result = -ENODEV;
down(&slot->mutex);
- if (slot->usb) {
- dt9812_rmw_byte_t rmw[3];
-
- // 1 select the gain
- dt9812_configure_gain(slot->usb, &rmw[0], gain);
-
- // 2 set the MUX to select the channel
- dt9812_configure_mux(slot->usb, &rmw[1], channel);
-
- // 3 start conversion
- rmw[2].address = F020_SFR_ADC0CN;
- rmw[2].and_mask = 0xff;
- rmw[2].or_value =
- F020_MASK_ADC0CN_AD0EN | F020_MASK_ADC0CN_AD0BUSY;
-
- result = dt9812_rmw_multiple_registers(slot->usb, 3, rmw);
- if (result == 0) {
- // read the status and ADC
- u8 reg[3] = { F020_SFR_ADC0CN, F020_SFR_ADC0H,
- F020_SFR_ADC0L
- };
- u8 val[3];
- result = dt9812_read_multiple_registers(slot->usb, 3,
- reg, val);
- if (result == 0) {
- // An ADC conversion takes 16 SAR clocks cycles, i.e. about 9us.
- // Therefore, between the instant that AD0BUSY was set via
- // dt9812_rmw_multiple_registers and the read of AD0BUSY via
- // dt9812_read_multiple_registers, the conversion
- // should be complete since these two operations require two USB
- // transactions each taking at least a millisecond to complete.
- // However, lets make sure that conversion is finished.
- if ((val[0] & (F020_MASK_ADC0CN_AD0INT |
- F020_MASK_ADC0CN_AD0BUSY))
- == F020_MASK_ADC0CN_AD0INT) {
- switch (slot->usb->device) {
- case DT9812_DEVID_DT9812_10:{
- // For DT9812-10V the personality module set the encoding to 2's
- // complement. Hence, convert it before returning it
- *value = ((val[1] << 8)
- | val[2]) +
- 0x800;
- }
- break;
- case DT9812_DEVID_DT9812_2PT5:{
- *value = (val[1] << 8) |
- val[2];
- }
- break;
- }
- }
- }
+ if (!slot->usb)
+ goto exit;
+
+ /* 1 select the gain */
+ dt9812_configure_gain(slot->usb, &rmw[0], gain);
+
+ /* 2 set the MUX to select the channel */
+ dt9812_configure_mux(slot->usb, &rmw[1], channel);
+
+ /* 3 start conversion */
+ rmw[2].address = F020_SFR_ADC0CN;
+ rmw[2].and_mask = 0xff;
+ rmw[2].or_value = F020_MASK_ADC0CN_AD0EN | F020_MASK_ADC0CN_AD0BUSY;
+
+ result = dt9812_rmw_multiple_registers(slot->usb, 3, rmw);
+ if (result)
+ goto exit;
+
+ /* read the status and ADC */
+ result = dt9812_read_multiple_registers(slot->usb, 3, reg, val);
+ if (result)
+ goto exit;
+ /*
+ * An ADC conversion takes 16 SAR clocks cycles, i.e. about 9us.
+ * Therefore, between the instant that AD0BUSY was set via
+ * dt9812_rmw_multiple_registers and the read of AD0BUSY via
+ * dt9812_read_multiple_registers, the conversion should be complete
+ * since these two operations require two USB transactions each taking
+ * at least a millisecond to complete. However, lets make sure that
+ * conversion is finished.
+ */
+ if ((val[0] & (F020_MASK_ADC0CN_AD0INT | F020_MASK_ADC0CN_AD0BUSY)) ==
+ F020_MASK_ADC0CN_AD0INT) {
+ switch (slot->usb->device) {
+ case DT9812_DEVID_DT9812_10:
+ /*
+ * For DT9812-10V the personality module set the
+ * encoding to 2's complement. Hence, convert it before
+ * returning it
+ */
+ *value = ((val[1] << 8) | val[2]) + 0x800;
+ break;
+ case DT9812_DEVID_DT9812_2PT5:
+ *value = (val[1] << 8) | val[2];
+ break;
}
}
+
+exit:
up(&slot->mutex);
return result;
}
-static int dt9812_analog_out_shadow(slot_dt9812_t * slot, int channel,
- u16 * value)
+static int dt9812_analog_out_shadow(slot_dt9812_t *slot, int channel,
+ u16 *value)
{
int result = -ENODEV;
return result;
}
-static int dt9812_analog_out(slot_dt9812_t * slot, int channel, u16 value)
+static int dt9812_analog_out(slot_dt9812_t *slot, int channel, u16 value)
{
int result = -ENODEV;
dt9812_rmw_byte_t rmw[3];
switch (channel) {
- case 0:{
- // 1. Set DAC mode
- rmw[0].address = F020_SFR_DAC0CN;
- rmw[0].and_mask = 0xff;
- rmw[0].or_value = F020_MASK_DACxCN_DACxEN;
-
- // 2 load low byte of DAC value first
- rmw[1].address = F020_SFR_DAC0L;
- rmw[1].and_mask = 0xff;
- rmw[1].or_value = value & 0xff;
-
- // 3 load high byte of DAC value next to latch the 12-bit value
- rmw[2].address = F020_SFR_DAC0H;
- rmw[2].and_mask = 0xff;
- rmw[2].or_value = (value >> 8) & 0xf;
- }
+ case 0:
+ /* 1. Set DAC mode */
+ rmw[0].address = F020_SFR_DAC0CN;
+ rmw[0].and_mask = 0xff;
+ rmw[0].or_value = F020_MASK_DACxCN_DACxEN;
+
+ /* 2 load low byte of DAC value first */
+ rmw[1].address = F020_SFR_DAC0L;
+ rmw[1].and_mask = 0xff;
+ rmw[1].or_value = value & 0xff;
+
+ /* 3 load high byte of DAC value next to latch the
+ 12-bit value */
+ rmw[2].address = F020_SFR_DAC0H;
+ rmw[2].and_mask = 0xff;
+ rmw[2].or_value = (value >> 8) & 0xf;
break;
- case 1:{
- // 1. Set DAC mode
- rmw[0].address = F020_SFR_DAC1CN;
- rmw[0].and_mask = 0xff;
- rmw[0].or_value = F020_MASK_DACxCN_DACxEN;
-
- // 2 load low byte of DAC value first
- rmw[1].address = F020_SFR_DAC1L;
- rmw[1].and_mask = 0xff;
- rmw[1].or_value = value & 0xff;
-
- // 3 load high byte of DAC value next to latch the 12-bit value
- rmw[2].address = F020_SFR_DAC1H;
- rmw[2].and_mask = 0xff;
- rmw[2].or_value = (value >> 8) & 0xf;
- }
+
+ case 1:
+ /* 1. Set DAC mode */
+ rmw[0].address = F020_SFR_DAC1CN;
+ rmw[0].and_mask = 0xff;
+ rmw[0].or_value = F020_MASK_DACxCN_DACxEN;
+
+ /* 2 load low byte of DAC value first */
+ rmw[1].address = F020_SFR_DAC1L;
+ rmw[1].and_mask = 0xff;
+ rmw[1].or_value = value & 0xff;
+
+ /* 3 load high byte of DAC value next to latch the
+ 12-bit value */
+ rmw[2].address = F020_SFR_DAC1H;
+ rmw[2].and_mask = 0xff;
+ rmw[2].or_value = (value >> 8) & 0xf;
break;
}
result = dt9812_rmw_multiple_registers(slot->usb, 3, rmw);
*/
static int dt9812_probe(struct usb_interface *interface,
- const struct usb_device_id *id)
+ const struct usb_device_id *id)
{
int retval = -ENOMEM;
usb_dt9812_t *dev = NULL;
int i;
u8 fw;
- // allocate memory for our device state and initialize it
+ /* allocate memory for our device state and initialize it */
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (dev == NULL) {
- err("Out of memory");
+ dev_err(&interface->dev, "Out of memory\n");
goto error;
}
kref_init(&dev->kref);
dev->udev = usb_get_dev(interface_to_usbdev(interface));
dev->interface = interface;
- // Check endpoints
+ /* Check endpoints */
iface_desc = interface->cur_altsetting;
if (iface_desc->desc.bNumEndpoints != 5) {
int direction = -1;
endpoint = &iface_desc->endpoint[i].desc;
switch (i) {
- case 0:{
- direction = USB_DIR_IN;
- dev->message_pipe.addr =
- endpoint->bEndpointAddress;
- dev->message_pipe.size =
+ case 0:
+ direction = USB_DIR_IN;
+ dev->message_pipe.addr = endpoint->bEndpointAddress;
+ dev->message_pipe.size =
le16_to_cpu(endpoint->wMaxPacketSize);
- }
+
break;
- case 1:{
- direction = USB_DIR_OUT;
- dev->command_write.addr =
- endpoint->bEndpointAddress;
- dev->command_write.size =
+ case 1:
+ direction = USB_DIR_OUT;
+ dev->command_write.addr = endpoint->bEndpointAddress;
+ dev->command_write.size =
le16_to_cpu(endpoint->wMaxPacketSize);
- }
break;
- case 2:{
- direction = USB_DIR_IN;
- dev->command_read.addr =
- endpoint->bEndpointAddress;
- dev->command_read.size =
+ case 2:
+ direction = USB_DIR_IN;
+ dev->command_read.addr = endpoint->bEndpointAddress;
+ dev->command_read.size =
le16_to_cpu(endpoint->wMaxPacketSize);
- }
break;
- case 3:{
- direction = USB_DIR_OUT;
- dev->write_stream.addr =
- endpoint->bEndpointAddress;
- dev->write_stream.size =
+ case 3:
+ direction = USB_DIR_OUT;
+ dev->write_stream.addr = endpoint->bEndpointAddress;
+ dev->write_stream.size =
le16_to_cpu(endpoint->wMaxPacketSize);
- }
break;
- case 4:{
- direction = USB_DIR_IN;
- dev->read_stream.addr =
- endpoint->bEndpointAddress;
- dev->read_stream.size =
+ case 4:
+ direction = USB_DIR_IN;
+ dev->read_stream.addr = endpoint->bEndpointAddress;
+ dev->read_stream.size =
le16_to_cpu(endpoint->wMaxPacketSize);
- }
break;
}
if ((endpoint->bEndpointAddress & USB_DIR_IN) != direction) {
- err("Endpoint has wrong direction.");
+ dev_err(&interface->dev,
+ "Endpoint has wrong direction.\n");
retval = -ENODEV;
goto error;
}
}
if (dt9812_read_info(dev, 0, &fw, sizeof(fw)) != 0) {
- // Seems like a configuration reset is necessary if driver
- // is reloaded while device is attached
+ /*
+ * Seems like a configuration reset is necessary if driver is
+ * reloaded while device is attached
+ */
int i;
usb_reset_configuration(dev->udev);
for (i = 0; i < 10; i++) {
retval = dt9812_read_info(dev, 1, &fw, sizeof(fw));
if (retval == 0) {
- printk("usb_reset_configuration succeded after %d iterations\n", i);
+ dev_info(&interface->dev,
+ "usb_reset_configuration succeded "
+ "after %d iterations\n", i);
break;
}
}
retval = -ENODEV;
goto error;
}
- if (dt9812_read_info(dev, 3, &dev->product, sizeof(dev->product)) != 0) {
+ if (dt9812_read_info(dev, 3, &dev->product,
+ sizeof(dev->product)) != 0) {
err("Failed to read product.");
retval = -ENODEV;
goto error;
dev->device = le16_to_cpu(dev->device);
dev->serial = le32_to_cpu(dev->serial);
switch (dev->device) {
- case DT9812_DEVID_DT9812_10:{
- dev->analog_out_shadow[0] = 0x0800;
- dev->analog_out_shadow[1] = 0x800;
- }
+ case DT9812_DEVID_DT9812_10:
+ dev->analog_out_shadow[0] = 0x0800;
+ dev->analog_out_shadow[1] = 0x800;
break;
- case DT9812_DEVID_DT9812_2PT5:{
- dev->analog_out_shadow[0] = 0x0000;
- dev->analog_out_shadow[1] = 0x0000;
- }
+ case DT9812_DEVID_DT9812_2PT5:
+ dev->analog_out_shadow[0] = 0x0000;
+ dev->analog_out_shadow[1] = 0x0000;
break;
}
dev->digital_out_shadow = 0;
- // save our data pointer in this interface device a
+ /* save our data pointer in this interface device */
usb_set_intfdata(interface, dev);
- // let the user know what node this device is now attached to
+ /* let the user know what node this device is now attached to */
dev_info(&interface->dev, "USB DT9812 (%4.4x.%4.4x.%4.4x) #0x%8.8x\n",
dev->vendor, dev->product, dev->device, dev->serial);
down(&dt9812_mutex);
{
- // Find a slot for the USB device
+ /* Find a slot for the USB device */
slot_dt9812_t *first = NULL;
slot_dt9812_t *best = NULL;
for (i = 0; i < DT9812_NUM_SLOTS; i++) {
- if (!first && !dt9812[i].usb && dt9812[i].serial == 0) {
+ if (!first && !dt9812[i].usb && dt9812[i].serial == 0)
first = &dt9812[i];
- }
- if (!best && dt9812[i].serial == dev->serial) {
+ if (!best && dt9812[i].serial == dev->serial)
best = &dt9812[i];
- }
}
- if (!best) {
+ if (!best)
best = first;
- }
if (best) {
down(&best->mutex);
return 0;
- error:
- if (dev) {
+error:
+ if (dev)
kref_put(&dev->kref, dt9812_delete);
- }
return retval;
}
* Comedi functions
*/
-static void dt9812_comedi_open(comedi_device * dev)
+static void dt9812_comedi_open(comedi_device *dev)
{
down(&devpriv->slot->mutex);
if (devpriv->slot->usb) {
- // We have an attached device, fill in current range info
+ /* We have an attached device, fill in current range info */
comedi_subdevice *s;
s = &dev->subdevices[0];
up(&devpriv->slot->mutex);
}
-static int dt9812_di_rinsn(comedi_device * dev, comedi_subdevice * s,
- comedi_insn * insn, lsampl_t * data)
+static int dt9812_di_rinsn(comedi_device *dev, comedi_subdevice *s,
+ comedi_insn *insn, lsampl_t *data)
{
int n;
u8 bits = 0;
dt9812_digital_in(devpriv->slot, &bits);
- for (n = 0; n < insn->n; n++) {
+ for (n = 0; n < insn->n; n++)
data[n] = ((1 << insn->chanspec) & bits) != 0;
- }
return n;
}
-static int dt9812_do_winsn(comedi_device * dev, comedi_subdevice * s,
- comedi_insn * insn, lsampl_t * data)
+static int dt9812_do_winsn(comedi_device *dev, comedi_subdevice *s,
+ comedi_insn *insn, lsampl_t *data)
{
int n;
u8 bits = 0;
u8 mask = 1 << insn->chanspec;
bits &= ~mask;
- if (data[n]) {
+ if (data[n])
bits |= mask;
- }
}
dt9812_digital_out(devpriv->slot, bits);
return n;
}
-static int dt9812_ai_rinsn(comedi_device * dev, comedi_subdevice * s,
- comedi_insn * insn, lsampl_t * data)
+static int dt9812_ai_rinsn(comedi_device *dev, comedi_subdevice *s,
+ comedi_insn *insn, lsampl_t *data)
{
int n;
u16 value = 0;
dt9812_analog_in(devpriv->slot, insn->chanspec, &value,
- DT9812_GAIN_1);
+ DT9812_GAIN_1);
data[n] = value;
}
return n;
}
-static int dt9812_ao_rinsn(comedi_device * dev, comedi_subdevice * s,
- comedi_insn * insn, lsampl_t * data)
+static int dt9812_ao_rinsn(comedi_device *dev, comedi_subdevice *s,
+ comedi_insn *insn, lsampl_t *data)
{
int n;
+ u16 value;
for (n = 0; n < insn->n; n++) {
- u16 value = 0;
-
+ value = 0;
dt9812_analog_out_shadow(devpriv->slot, insn->chanspec, &value);
data[n] = value;
}
return n;
}
-static int dt9812_ao_winsn(comedi_device * dev, comedi_subdevice * s,
- comedi_insn * insn, lsampl_t * data)
+static int dt9812_ao_winsn(comedi_device *dev, comedi_subdevice *s,
+ comedi_insn *insn, lsampl_t *data)
{
int n;
- for (n = 0; n < insn->n; n++) {
+ for (n = 0; n < insn->n; n++)
dt9812_analog_out(devpriv->slot, insn->chanspec, data[n]);
- }
return n;
}
-static int dt9812_attach(comedi_device * dev, comedi_devconfig * it)
+static int dt9812_attach(comedi_device *dev, comedi_devconfig *it)
{
int i;
comedi_subdevice *s;
dev->board_name = "dt9812";
- if (alloc_private(dev, sizeof(comedi_dt9812_t)) < 0) {
+ if (alloc_private(dev, sizeof(comedi_dt9812_t)) < 0)
return -ENOMEM;
- }
- // Special open routine, since USB unit may be unattached at
- // comedi_config time, hence range can not be determined
+
+ /*
+ * Special open routine, since USB unit may be unattached at
+ * comedi_config time, hence range can not be determined
+ */
dev->open = dt9812_comedi_open;
devpriv->serial = it->options[0];
- // Allocate subdevices
- if (alloc_subdevices(dev, 4) < 0) {
+ /* Allocate subdevices */
+ if (alloc_subdevices(dev, 4) < 0)
return -ENOMEM;
- }
/* digital input subdevice */
s = dev->subdevices + 0;
s->insn_write = &dt9812_ao_winsn;
s->insn_read = &dt9812_ao_rinsn;
- printk("comedi%d: successfully attached to dt9812.\n", dev->minor);
+ printk(KERN_INFO "comedi%d: successfully attached to dt9812.\n",
+ dev->minor);
down(&dt9812_mutex);
- // Find a slot for the comedi device
+ /* Find a slot for the comedi device */
{
slot_dt9812_t *first = NULL;
slot_dt9812_t *best = NULL;
for (i = 0; i < DT9812_NUM_SLOTS; i++) {
if (!first && !dt9812[i].comedi) {
- // First free slot from comedi side
+ /* First free slot from comedi side */
first = &dt9812[i];
}
if (!best &&
- dt9812[i].usb
- && dt9812[i].usb->serial == devpriv->serial) {
- // We have an attaced device with matching ID
+ dt9812[i].usb &&
+ dt9812[i].usb->serial == devpriv->serial) {
+ /* We have an attaced device with matching ID */
best = &dt9812[i];
}
}
- if (!best) {
+ if (!best)
best = first;
- }
if (best) {
down(&best->mutex);
best->comedi = devpriv;
return 0;
}
-static int dt9812_detach(comedi_device * dev)
+static int dt9812_detach(comedi_device *dev)
{
-
return 0;
}
{
int result, i;
- // Initialize all driver slots
+ /* Initialize all driver slots */
for (i = 0; i < DT9812_NUM_SLOTS; i++) {
init_MUTEX(&dt9812[i].mutex);
dt9812[i].serial = 0;
}
dt9812[12].serial = 0x0;
- // register with the USB subsystem
+ /* register with the USB subsystem */
result = usb_register(&dt9812_usb_driver);
if (result) {
- err("usb_register failed. Error number %d", result);
+ printk(KERN_ERR KBUILD_MODNAME
+ ": usb_register failed. Error number %d\n", result);
+ return result;
}
- // register with comedi
+ /* register with comedi */
result = comedi_driver_register(&dt9812_comedi_driver);
if (result) {
usb_deregister(&dt9812_usb_driver);
static void __exit usb_dt9812_exit(void)
{
- // unregister with comedi
+ /* unregister with comedi */
comedi_driver_unregister(&dt9812_comedi_driver);
/* deregister this driver with the USB subsystem */
MODULE_AUTHOR("Anders Blomdell <anders.blomdell@control.lth.se>");
MODULE_DESCRIPTION("Comedi DT9812 driver");
MODULE_LICENSE("GPL");
-
-#endif // LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
#define F020_MASK_DACxCN_DACxEN 0x80
-typedef enum { // A/D D/A DI DO CT
- DT9812_DEVID_DT9812_10, // 8 2 8 8 1 +/- 10V
- DT9812_DEVID_DT9812_2PT5, // 8 2 8 8 1 0-2.44V
+typedef enum {
+ /* A/D D/A DI DO CT */
+ DT9812_DEVID_DT9812_10, /* 8 2 8 8 1 +/- 10V */
+ DT9812_DEVID_DT9812_2PT5,/* 8 2 8 8 1 0-2.44V */
#if 0
- DT9812_DEVID_DT9813, // 16 2 4 4 1 +/- 10V
- DT9812_DEVID_DT9814 // 24 2 0 0 1 +/- 10V
+ DT9812_DEVID_DT9813, /* 16 2 4 4 1 +/- 10V */
+ DT9812_DEVID_DT9814 /* 24 2 0 0 1 +/- 10V */
#endif
} dt9812_devid_t;
typedef enum {
DT9812_LEAST_USB_FIRMWARE_CMD_CODE = 0,
- DT9812_W_FLASH_DATA = 0, // Write Flash memory
- DT9812_R_FLASH_DATA = 1, // Read Flash memory (misc config info)
-
- // Register read/write commands for processor
- DT9812_R_SINGLE_BYTE_REG = 2, // Read a single byte of USB memory
- DT9812_W_SINGLE_BYTE_REG = 3, // Write a single byte of USB memory
- DT9812_R_MULTI_BYTE_REG = 4, // Multiple Reads of USB memory
- DT9812_W_MULTI_BYTE_REG = 5, // Multiple Writes of USB memory
- DT9812_RMW_SINGLE_BYTE_REG = 6, // Read, (AND) with mask, OR value,
- // then write (single)
- DT9812_RMW_MULTI_BYTE_REG = 7, // Read, (AND) with mask, OR value,
- // then write (multiple)
-
- // Register read/write commands for SMBus
- DT9812_R_SINGLE_BYTE_SMBUS = 8, // Read a single byte of SMBus
- DT9812_W_SINGLE_BYTE_SMBUS = 9, // Write a single byte of SMBus
- DT9812_R_MULTI_BYTE_SMBUS = 10, // Multiple Reads of SMBus
- DT9812_W_MULTI_BYTE_SMBUS = 11, // Multiple Writes of SMBus
-
- // Register read/write commands for a device
- DT9812_R_SINGLE_BYTE_DEV = 12, // Read a single byte of a device
- DT9812_W_SINGLE_BYTE_DEV = 13, // Write a single byte of a device
- DT9812_R_MULTI_BYTE_DEV = 14, // Multiple Reads of a device
- DT9812_W_MULTI_BYTE_DEV = 15, // Multiple Writes of a device
-
- DT9812_W_DAC_THRESHOLD = 16, // Not sure if we'll need this
-
- DT9812_W_INT_ON_CHANGE_MASK = 17, // Set interrupt on change mask
-
- DT9812_W_CGL = 18, // Write (or Clear) the CGL for the ADC
- DT9812_R_MULTI_BYTE_USBMEM = 19, // Multiple Reads of USB memory
- DT9812_W_MULTI_BYTE_USBMEM = 20, // Multiple Writes to USB memory
-
- DT9812_START_SUBSYSTEM = 21, // Issue a start command to a
- // given subsystem
- DT9812_STOP_SUBSYSTEM = 22, // Issue a stop command to a
- // given subsystem
-
- DT9812_CALIBRATE_POT = 23, //calibrate the board using CAL_POT_CMD
- DT9812_W_DAC_FIFO_SIZE = 24, // set the DAC FIFO size
- DT9812_W_CGL_DAC = 25, // Write (or Clear) the CGL for the DAC
- DT9812_R_SINGLE_VALUE_CMD = 26, // Read a single value from a subsystem
- DT9812_W_SINGLE_VALUE_CMD = 27, // Write a single value to a subsystem
- DT9812_MAX_USB_FIRMWARE_CMD_CODE // Valid DT9812_USB_FIRMWARE_CMD_CODE's
- // will be less than this number
+ /* Write Flash memory */
+ DT9812_W_FLASH_DATA = 0,
+ /* Read Flash memory misc config info */
+ DT9812_R_FLASH_DATA = 1,
+
+ /*
+ * Register read/write commands for processor
+ */
+
+ /* Read a single byte of USB memory */
+ DT9812_R_SINGLE_BYTE_REG = 2,
+ /* Write a single byte of USB memory */
+ DT9812_W_SINGLE_BYTE_REG = 3,
+ /* Multiple Reads of USB memory */
+ DT9812_R_MULTI_BYTE_REG = 4,
+ /* Multiple Writes of USB memory */
+ DT9812_W_MULTI_BYTE_REG = 5,
+ /* Read, (AND) with mask, OR value, then write (single) */
+ DT9812_RMW_SINGLE_BYTE_REG = 6,
+ /* Read, (AND) with mask, OR value, then write (multiple) */
+ DT9812_RMW_MULTI_BYTE_REG = 7,
+
+ /*
+ * Register read/write commands for SMBus
+ */
+
+ /* Read a single byte of SMBus */
+ DT9812_R_SINGLE_BYTE_SMBUS = 8,
+ /* Write a single byte of SMBus */
+ DT9812_W_SINGLE_BYTE_SMBUS = 9,
+ /* Multiple Reads of SMBus */
+ DT9812_R_MULTI_BYTE_SMBUS = 10,
+ /* Multiple Writes of SMBus */
+ DT9812_W_MULTI_BYTE_SMBUS = 11,
+
+ /*
+ * Register read/write commands for a device
+ */
+
+ /* Read a single byte of a device */
+ DT9812_R_SINGLE_BYTE_DEV = 12,
+ /* Write a single byte of a device */
+ DT9812_W_SINGLE_BYTE_DEV = 13,
+ /* Multiple Reads of a device */
+ DT9812_R_MULTI_BYTE_DEV = 14,
+ /* Multiple Writes of a device */
+ DT9812_W_MULTI_BYTE_DEV = 15,
+
+ /* Not sure if we'll need this */
+ DT9812_W_DAC_THRESHOLD = 16,
+
+ /* Set interrupt on change mask */
+ DT9812_W_INT_ON_CHANGE_MASK = 17,
+
+ /* Write (or Clear) the CGL for the ADC */
+ DT9812_W_CGL = 18,
+ /* Multiple Reads of USB memory */
+ DT9812_R_MULTI_BYTE_USBMEM = 19,
+ /* Multiple Writes to USB memory */
+ DT9812_W_MULTI_BYTE_USBMEM = 20,
+
+ /* Issue a start command to a given subsystem */
+ DT9812_START_SUBSYSTEM = 21,
+ /* Issue a stop command to a given subsystem */
+ DT9812_STOP_SUBSYSTEM = 22,
+
+ /* calibrate the board using CAL_POT_CMD */
+ DT9812_CALIBRATE_POT = 23,
+ /* set the DAC FIFO size */
+ DT9812_W_DAC_FIFO_SIZE = 24,
+ /* Write or Clear the CGL for the DAC */
+ DT9812_W_CGL_DAC = 25,
+ /* Read a single value from a subsystem */
+ DT9812_R_SINGLE_VALUE_CMD = 26,
+ /* Write a single value to a subsystem */
+ DT9812_W_SINGLE_VALUE_CMD = 27,
+ /* Valid DT9812_USB_FIRMWARE_CMD_CODE's will be less than this number */
+ DT9812_MAX_USB_FIRMWARE_CMD_CODE,
} dt9812_usb_firmware_cmd_t;
typedef struct {
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