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Staging: comedi: add usb dt9812 driver
Data Translation DT9812 USB driver From: Anders Blomdell <anders.blomdell@control.lth.se> Cc: David Schleef <ds@schleef.org> Cc: Frank Mori Hess <fmhess@users.sourceforge.net> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Anders Blomdell
Greg Kroah-Hartman
parent
f47c697d13
commit
63274cd7d3
@ -10,3 +10,4 @@ obj-$(CONFIG_COMEDI_PCI_DRIVERS) += mite.o
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# Comedi USB drivers
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obj-$(CONFIG_COMEDI_USB_DRIVERS) += usbdux.o
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obj-$(CONFIG_COMEDI_USB_DRIVERS) += usbduxfast.o
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obj-$(CONFIG_COMEDI_USB_DRIVERS) += dt9812.o
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957
drivers/staging/comedi/drivers/dt9812.c
Normal file
957
drivers/staging/comedi/drivers/dt9812.c
Normal file
@ -0,0 +1,957 @@
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/*
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* comedi/drivers/dt9812.c
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* COMEDI driver for DataTranslation DT9812 USB module
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*
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* Copyright (C) 2005 Anders Blomdell <anders.blomdell@control.lth.se>
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*
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* COMEDI - Linux Control and Measurement Device Interface
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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/*
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Driver: dt9812
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Description: Data Translation DT9812 USB module
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Author: anders.blomdell@control.lth.se (Anders Blomdell)
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Status: in development
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Devices: [Data Translation] DT9812 (dt9812)
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Updated: Sun Nov 20 20:18:34 EST 2005
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This driver works, but bulk transfers not implemented. Might be a starting point
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for someone else. I found out too late that USB has too high latencies (>1 ms)
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for my needs.
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*/
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/*
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* Nota Bene:
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* 1. All writes to command pipe has to be 32 bytes (ISP1181B SHRTP=0 ?)
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* 2. The DDK source (as of sep 2005) is in error regarding the
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* input MUX bits (example code says P4, but firmware schematics
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* says P1).
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*/
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#include <linux/version.h>
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/kref.h>
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#include <asm/uaccess.h>
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#include <linux/usb.h>
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#include "../comedidev.h"
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#include "dt9812.h"
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#define DT9812_NUM_SLOTS 16
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static DECLARE_MUTEX(dt9812_mutex);
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static struct usb_device_id dt9812_table[] = {
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{USB_DEVICE(0x0867, 0x9812)},
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{} /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, dt9812_table);
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typedef struct usb_dt9812 {
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struct slot_dt9812 *slot;
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struct usb_device *udev;
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struct usb_interface *interface;
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u16 vendor;
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u16 product;
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u16 device;
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u32 serial;
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struct {
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__u8 addr;
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size_t size;
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} message_pipe, command_write, command_read, write_stream, read_stream;
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struct kref kref;
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u16 analog_out_shadow[2];
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u8 digital_out_shadow;
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} usb_dt9812_t;
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typedef struct comedi_dt9812 {
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struct slot_dt9812 *slot;
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u32 serial;
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} comedi_dt9812_t;
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typedef struct slot_dt9812 {
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struct semaphore mutex;
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u32 serial;
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usb_dt9812_t *usb;
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comedi_dt9812_t *comedi;
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} slot_dt9812_t;
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static const comedi_lrange dt9812_10_ain_range = { 1, {
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BIP_RANGE(10),
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}
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};
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static const comedi_lrange dt9812_2pt5_ain_range = { 1, {
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UNI_RANGE(2.5),
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}
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};
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static const comedi_lrange dt9812_10_aout_range = { 1, {
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BIP_RANGE(10),
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}
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};
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static const comedi_lrange dt9812_2pt5_aout_range = { 1, {
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UNI_RANGE(2.5),
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}
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};
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static slot_dt9812_t dt9812[DT9812_NUM_SLOTS];
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// Useful shorthand access to private data
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#define devpriv ((comedi_dt9812_t *)dev->private)
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static inline usb_dt9812_t *to_dt9812_dev(struct kref *d)
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{
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return container_of(d, usb_dt9812_t, kref);
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}
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static void dt9812_delete(struct kref *kref)
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{
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usb_dt9812_t *dev = to_dt9812_dev(kref);
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usb_put_dev(dev->udev);
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kfree(dev);
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}
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static int dt9812_read_info(usb_dt9812_t * dev,
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int offset, void *buf, size_t buf_size)
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{
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dt9812_usb_cmd_t cmd;
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int count, retval;
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cmd.cmd = cpu_to_le32(DT9812_R_FLASH_DATA);
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cmd.u.flash_data_info.address =
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cpu_to_le16(DT9812_DIAGS_BOARD_INFO_ADDR + offset);
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cmd.u.flash_data_info.numbytes = cpu_to_le16(buf_size);
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count = 32;
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retval = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, dev->command_write.addr), &cmd, 32, // DT9812 only responds to 32 byte writes!!
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&count, HZ * 1);
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if (retval == 0) {
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retval = usb_bulk_msg(dev->udev,
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usb_rcvbulkpipe(dev->udev, dev->command_read.addr),
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buf, buf_size, &count, HZ * 1);
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}
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return retval;
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}
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static int dt9812_read_multiple_registers(usb_dt9812_t * dev,
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int reg_count, u8 * address, u8 * value)
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{
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dt9812_usb_cmd_t cmd;
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int i, count, retval;
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cmd.cmd = cpu_to_le32(DT9812_R_MULTI_BYTE_REG);
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cmd.u.read_multi_info.count = reg_count;
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for (i = 0; i < reg_count; i++) {
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cmd.u.read_multi_info.address[i] = address[i];
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}
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count = 32;
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retval = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, dev->command_write.addr), &cmd, 32, // DT9812 only responds to 32 byte writes!!
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&count, HZ * 1);
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if (retval == 0) {
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retval = usb_bulk_msg(dev->udev,
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usb_rcvbulkpipe(dev->udev, dev->command_read.addr),
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value, reg_count, &count, HZ * 1);
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}
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return retval;
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}
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static int dt9812_write_multiple_registers(usb_dt9812_t * dev,
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int reg_count, u8 * address, u8 * value)
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{
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dt9812_usb_cmd_t cmd;
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int i, count, retval;
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cmd.cmd = cpu_to_le32(DT9812_W_MULTI_BYTE_REG);
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cmd.u.read_multi_info.count = reg_count;
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for (i = 0; i < reg_count; i++) {
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cmd.u.write_multi_info.write[i].address = address[i];
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cmd.u.write_multi_info.write[i].value = value[i];
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}
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retval = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, dev->command_write.addr), &cmd, 32, // DT9812 only responds to 32 byte writes!!
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&count, HZ * 1);
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return retval;
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}
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static int dt9812_rmw_multiple_registers(usb_dt9812_t * dev,
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int reg_count, dt9812_rmw_byte_t rmw[])
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{
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dt9812_usb_cmd_t cmd;
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int i, count, retval;
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cmd.cmd = cpu_to_le32(DT9812_RMW_MULTI_BYTE_REG);
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cmd.u.rmw_multi_info.count = reg_count;
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for (i = 0; i < reg_count; i++) {
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cmd.u.rmw_multi_info.rmw[i] = rmw[i];
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}
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retval = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, dev->command_write.addr), &cmd, 32, // DT9812 only responds to 32 byte writes!!
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&count, HZ * 1);
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return retval;
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}
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static int dt9812_digital_in(slot_dt9812_t * slot, u8 * bits)
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{
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int result = -ENODEV;
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down(&slot->mutex);
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if (slot->usb) {
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u8 reg[2] = { F020_SFR_P3, F020_SFR_P1 };
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u8 value[2];
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result = dt9812_read_multiple_registers(slot->usb, 2, reg,
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value);
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if (result == 0) {
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// bits 0-6 in F020_SFR_P3 are bits 0-6 in the digital input port
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// bit 3 in F020_SFR_P1 is bit 7 in the digital input port
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*bits = (value[0] & 0x7f) | ((value[1] & 0x08) << 4);
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// printk("%2.2x, %2.2x -> %2.2x\n", value[0], value[1], *bits);
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}
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}
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up(&slot->mutex);
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return result;
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}
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static int dt9812_digital_out(slot_dt9812_t * slot, u8 bits)
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{
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int result = -ENODEV;
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down(&slot->mutex);
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if (slot->usb) {
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u8 reg[1];
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u8 value[1];
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reg[0] = F020_SFR_P2;
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value[0] = bits;
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result = dt9812_write_multiple_registers(slot->usb, 1, reg,
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value);
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slot->usb->digital_out_shadow = bits;
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}
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up(&slot->mutex);
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return result;
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}
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static int dt9812_digital_out_shadow(slot_dt9812_t * slot, u8 * bits)
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{
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int result = -ENODEV;
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down(&slot->mutex);
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if (slot->usb) {
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*bits = slot->usb->digital_out_shadow;
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result = 0;
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}
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up(&slot->mutex);
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return result;
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}
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static void dt9812_configure_mux(usb_dt9812_t * dev,
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dt9812_rmw_byte_t * rmw, int channel)
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{
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if (dev->device == DT9812_DEVID_DT9812_10) {
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// In the DT9812/10V MUX is selected by P1.5-7
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rmw->address = F020_SFR_P1;
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rmw->and_mask = 0xe0;
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rmw->or_value = channel << 5;
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} else {
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// In the DT9812/2.5V, the internal mux is selected by bits 0:2
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rmw->address = F020_SFR_AMX0SL;
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rmw->and_mask = 0xff;
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rmw->or_value = channel & 0x07;
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}
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}
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static void dt9812_configure_gain(usb_dt9812_t * dev,
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dt9812_rmw_byte_t * rmw, dt9812_gain_t gain)
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{
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if (dev->device == DT9812_DEVID_DT9812_10) {
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// In the DT9812/10V, there is an external gain of 0.5
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gain <<= 1;
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}
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rmw->address = F020_SFR_ADC0CF;
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rmw->and_mask =
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F020_MASK_ADC0CF_AMP0GN2 |
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F020_MASK_ADC0CF_AMP0GN1 | F020_MASK_ADC0CF_AMP0GN0;
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switch (gain) {
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// 000 -> Gain = 1
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// 001 -> Gain = 2
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// 010 -> Gain = 4
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// 011 -> Gain = 8
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// 10x -> Gain = 16
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// 11x -> Gain = 0.5
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case DT9812_GAIN_0PT5:{
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rmw->or_value = F020_MASK_ADC0CF_AMP0GN2
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|| F020_MASK_ADC0CF_AMP0GN1;
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}
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break;
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case DT9812_GAIN_1:{
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rmw->or_value = 0x00;
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}
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break;
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case DT9812_GAIN_2:{
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rmw->or_value = F020_MASK_ADC0CF_AMP0GN0;
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}
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break;
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case DT9812_GAIN_4:{
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rmw->or_value = F020_MASK_ADC0CF_AMP0GN1;
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}
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break;
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case DT9812_GAIN_8:{
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rmw->or_value = F020_MASK_ADC0CF_AMP0GN1
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|| F020_MASK_ADC0CF_AMP0GN0;
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}
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break;
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case DT9812_GAIN_16:{
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rmw->or_value = F020_MASK_ADC0CF_AMP0GN2;
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}
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break;
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default:{
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err("Illegal gain %d\n", gain);
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}
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}
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}
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static int dt9812_analog_in(slot_dt9812_t * slot,
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int channel, u16 * value, dt9812_gain_t gain)
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{
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int result = -ENODEV;
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down(&slot->mutex);
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if (slot->usb) {
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dt9812_rmw_byte_t rmw[3];
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// 1 select the gain
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dt9812_configure_gain(slot->usb, &rmw[0], gain);
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// 2 set the MUX to select the channel
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dt9812_configure_mux(slot->usb, &rmw[1], channel);
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// 3 start conversion
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rmw[2].address = F020_SFR_ADC0CN;
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rmw[2].and_mask = 0xff;
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rmw[2].or_value =
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F020_MASK_ADC0CN_AD0EN | F020_MASK_ADC0CN_AD0BUSY;
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result = dt9812_rmw_multiple_registers(slot->usb, 3, rmw);
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if (result == 0) {
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// read the status and ADC
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u8 reg[3] = { F020_SFR_ADC0CN, F020_SFR_ADC0H,
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F020_SFR_ADC0L
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};
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u8 val[3];
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result = dt9812_read_multiple_registers(slot->usb, 3,
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reg, val);
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if (result == 0) {
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// An ADC conversion takes 16 SAR clocks cycles, i.e. about 9us.
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// Therefore, between the instant that AD0BUSY was set via
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// dt9812_rmw_multiple_registers and the read of AD0BUSY via
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// dt9812_read_multiple_registers, the conversion
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// should be complete since these two operations require two USB
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// transactions each taking at least a millisecond to complete.
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// However, lets make sure that conversion is finished.
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if ((val[0] & (F020_MASK_ADC0CN_AD0INT |
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F020_MASK_ADC0CN_AD0BUSY))
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== F020_MASK_ADC0CN_AD0INT) {
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switch (slot->usb->device) {
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case DT9812_DEVID_DT9812_10:{
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// For DT9812-10V the personality module set the encoding to 2's
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// complement. Hence, convert it before returning it
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*value = ((val[1] << 8)
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| val[2]) +
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0x800;
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}
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break;
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case DT9812_DEVID_DT9812_2PT5:{
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*value = (val[1] << 8) |
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val[2];
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}
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break;
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}
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}
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}
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}
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}
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up(&slot->mutex);
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return result;
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}
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static int dt9812_analog_out_shadow(slot_dt9812_t * slot, int channel,
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u16 * value)
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{
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int result = -ENODEV;
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down(&slot->mutex);
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if (slot->usb) {
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*value = slot->usb->analog_out_shadow[channel];
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result = 0;
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}
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up(&slot->mutex);
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return result;
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}
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static int dt9812_analog_out(slot_dt9812_t * slot, int channel, u16 value)
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{
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int result = -ENODEV;
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down(&slot->mutex);
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if (slot->usb) {
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dt9812_rmw_byte_t rmw[3];
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switch (channel) {
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case 0:{
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// 1. Set DAC mode
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rmw[0].address = F020_SFR_DAC0CN;
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rmw[0].and_mask = 0xff;
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rmw[0].or_value = F020_MASK_DACxCN_DACxEN;
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// 2 load low byte of DAC value first
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rmw[1].address = F020_SFR_DAC0L;
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rmw[1].and_mask = 0xff;
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rmw[1].or_value = value & 0xff;
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// 3 load high byte of DAC value next to latch the 12-bit value
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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;
|
||||
}
|
||||
break;
|
||||
}
|
||||
result = dt9812_rmw_multiple_registers(slot->usb, 3, rmw);
|
||||
slot->usb->analog_out_shadow[channel] = value;
|
||||
}
|
||||
up(&slot->mutex);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
/*
|
||||
* USB framework functions
|
||||
*/
|
||||
|
||||
static int dt9812_probe(struct usb_interface *interface,
|
||||
const struct usb_device_id *id)
|
||||
{
|
||||
int retval = -ENOMEM;
|
||||
usb_dt9812_t *dev = NULL;
|
||||
struct usb_host_interface *iface_desc;
|
||||
struct usb_endpoint_descriptor *endpoint;
|
||||
int i;
|
||||
u8 fw;
|
||||
|
||||
// allocate memory for our device state and initialize it
|
||||
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
|
||||
if (dev == NULL) {
|
||||
err("Out of memory");
|
||||
goto error;
|
||||
}
|
||||
kref_init(&dev->kref);
|
||||
|
||||
dev->udev = usb_get_dev(interface_to_usbdev(interface));
|
||||
dev->interface = interface;
|
||||
|
||||
// Check endpoints
|
||||
iface_desc = interface->cur_altsetting;
|
||||
|
||||
if (iface_desc->desc.bNumEndpoints != 5) {
|
||||
err("Wrong number of endpints.");
|
||||
retval = -ENODEV;
|
||||
goto error;
|
||||
}
|
||||
|
||||
for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
|
||||
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 =
|
||||
le16_to_cpu(endpoint->wMaxPacketSize);
|
||||
}
|
||||
break;
|
||||
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 =
|
||||
le16_to_cpu(endpoint->wMaxPacketSize);
|
||||
}
|
||||
break;
|
||||
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 =
|
||||
le16_to_cpu(endpoint->wMaxPacketSize);
|
||||
}
|
||||
break;
|
||||
}
|
||||
if ((endpoint->bEndpointAddress & USB_DIR_IN) != direction) {
|
||||
err("Endpoint has wrong direction.");
|
||||
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
|
||||
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);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (dt9812_read_info(dev, 1, &dev->vendor, sizeof(dev->vendor)) != 0) {
|
||||
err("Failed to read vendor.");
|
||||
retval = -ENODEV;
|
||||
goto error;
|
||||
}
|
||||
if (dt9812_read_info(dev, 3, &dev->product, sizeof(dev->product)) != 0) {
|
||||
err("Failed to read product.");
|
||||
retval = -ENODEV;
|
||||
goto error;
|
||||
}
|
||||
if (dt9812_read_info(dev, 5, &dev->device, sizeof(dev->device)) != 0) {
|
||||
err("Failed to read device.");
|
||||
retval = -ENODEV;
|
||||
goto error;
|
||||
}
|
||||
if (dt9812_read_info(dev, 7, &dev->serial, sizeof(dev->serial)) != 0) {
|
||||
err("Failed to read serial.");
|
||||
retval = -ENODEV;
|
||||
goto error;
|
||||
}
|
||||
|
||||
dev->vendor = le16_to_cpu(dev->vendor);
|
||||
dev->product = le16_to_cpu(dev->product);
|
||||
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;
|
||||
}
|
||||
break;
|
||||
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
|
||||
usb_set_intfdata(interface, dev);
|
||||
|
||||
// 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
|
||||
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) {
|
||||
first = &dt9812[i];
|
||||
}
|
||||
if (!best && dt9812[i].serial == dev->serial) {
|
||||
best = &dt9812[i];
|
||||
}
|
||||
}
|
||||
|
||||
if (!best) {
|
||||
best = first;
|
||||
}
|
||||
|
||||
if (best) {
|
||||
down(&best->mutex);
|
||||
best->usb = dev;
|
||||
dev->slot = best;
|
||||
up(&best->mutex);
|
||||
}
|
||||
}
|
||||
up(&dt9812_mutex);
|
||||
|
||||
return 0;
|
||||
|
||||
error:
|
||||
if (dev) {
|
||||
kref_put(&dev->kref, dt9812_delete);
|
||||
}
|
||||
return retval;
|
||||
}
|
||||
|
||||
static void dt9812_disconnect(struct usb_interface *interface)
|
||||
{
|
||||
usb_dt9812_t *dev;
|
||||
int minor = interface->minor;
|
||||
|
||||
down(&dt9812_mutex);
|
||||
dev = usb_get_intfdata(interface);
|
||||
if (dev->slot) {
|
||||
down(&dev->slot->mutex);
|
||||
dev->slot->usb = NULL;
|
||||
up(&dev->slot->mutex);
|
||||
dev->slot = NULL;
|
||||
}
|
||||
usb_set_intfdata(interface, NULL);
|
||||
up(&dt9812_mutex);
|
||||
|
||||
/* queue final destruction */
|
||||
kref_put(&dev->kref, dt9812_delete);
|
||||
|
||||
dev_info(&interface->dev, "USB Dt9812 #%d now disconnected\n", minor);
|
||||
}
|
||||
|
||||
static struct usb_driver dt9812_usb_driver = {
|
||||
#ifdef COMEDI_HAVE_USB_DRIVER_OWNER
|
||||
.owner = THIS_MODULE,
|
||||
#endif
|
||||
.name = "dt9812",
|
||||
.probe = dt9812_probe,
|
||||
.disconnect = dt9812_disconnect,
|
||||
.id_table = dt9812_table,
|
||||
};
|
||||
|
||||
/*
|
||||
* Comedi functions
|
||||
*/
|
||||
|
||||
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
|
||||
comedi_subdevice *s;
|
||||
|
||||
s = &dev->subdevices[0];
|
||||
s->n_chan = 8;
|
||||
s->maxdata = 1;
|
||||
|
||||
s = &dev->subdevices[1];
|
||||
s->n_chan = 8;
|
||||
s->maxdata = 1;
|
||||
|
||||
s = &dev->subdevices[2];
|
||||
s->n_chan = 8;
|
||||
switch (devpriv->slot->usb->device) {
|
||||
case 0:{
|
||||
s->maxdata = 4095;
|
||||
s->range_table = &dt9812_10_ain_range;
|
||||
}
|
||||
break;
|
||||
case 1:{
|
||||
s->maxdata = 4095;
|
||||
s->range_table = &dt9812_2pt5_ain_range;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
s = &dev->subdevices[3];
|
||||
s->n_chan = 2;
|
||||
switch (devpriv->slot->usb->device) {
|
||||
case 0:{
|
||||
s->maxdata = 4095;
|
||||
s->range_table = &dt9812_10_aout_range;
|
||||
}
|
||||
break;
|
||||
case 1:{
|
||||
s->maxdata = 4095;
|
||||
s->range_table = &dt9812_2pt5_aout_range;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
up(&devpriv->slot->mutex);
|
||||
}
|
||||
|
||||
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++) {
|
||||
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)
|
||||
{
|
||||
int n;
|
||||
u8 bits = 0;
|
||||
|
||||
dt9812_digital_out_shadow(devpriv->slot, &bits);
|
||||
for (n = 0; n < insn->n; n++) {
|
||||
u8 mask = 1 << insn->chanspec;
|
||||
|
||||
bits &= ~mask;
|
||||
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)
|
||||
{
|
||||
int n;
|
||||
|
||||
for (n = 0; n < insn->n; n++) {
|
||||
u16 value = 0;
|
||||
|
||||
dt9812_analog_in(devpriv->slot, insn->chanspec, &value,
|
||||
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)
|
||||
{
|
||||
int n;
|
||||
|
||||
for (n = 0; n < insn->n; n++) {
|
||||
u16 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)
|
||||
{
|
||||
int 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)
|
||||
{
|
||||
int i;
|
||||
comedi_subdevice *s;
|
||||
|
||||
dev->board_name = "dt9812";
|
||||
|
||||
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
|
||||
dev->open = dt9812_comedi_open;
|
||||
|
||||
devpriv->serial = it->options[0];
|
||||
|
||||
// Allocate subdevices
|
||||
if (alloc_subdevices(dev, 4) < 0) {
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
/* digital input subdevice */
|
||||
s = dev->subdevices + 0;
|
||||
s->type = COMEDI_SUBD_DI;
|
||||
s->subdev_flags = SDF_READABLE;
|
||||
s->n_chan = 0;
|
||||
s->maxdata = 1;
|
||||
s->range_table = &range_digital;
|
||||
s->insn_read = &dt9812_di_rinsn;
|
||||
|
||||
/* digital output subdevice */
|
||||
s = dev->subdevices + 1;
|
||||
s->type = COMEDI_SUBD_DO;
|
||||
s->subdev_flags = SDF_WRITEABLE;
|
||||
s->n_chan = 0;
|
||||
s->maxdata = 1;
|
||||
s->range_table = &range_digital;
|
||||
s->insn_write = &dt9812_do_winsn;
|
||||
|
||||
/* analog input subdevice */
|
||||
s = dev->subdevices + 2;
|
||||
s->type = COMEDI_SUBD_AI;
|
||||
s->subdev_flags = SDF_READABLE | SDF_GROUND;
|
||||
s->n_chan = 0;
|
||||
s->maxdata = 1;
|
||||
s->range_table = 0;
|
||||
s->insn_read = &dt9812_ai_rinsn;
|
||||
|
||||
/* analog output subdevice */
|
||||
s = dev->subdevices + 3;
|
||||
s->type = COMEDI_SUBD_AO;
|
||||
s->subdev_flags = SDF_WRITEABLE;
|
||||
s->n_chan = 0;
|
||||
s->maxdata = 1;
|
||||
s->range_table = 0;
|
||||
s->insn_write = &dt9812_ao_winsn;
|
||||
s->insn_read = &dt9812_ao_rinsn;
|
||||
|
||||
printk("comedi%d: successfully attached to dt9812.\n", dev->minor);
|
||||
|
||||
down(&dt9812_mutex);
|
||||
// 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 = &dt9812[i];
|
||||
}
|
||||
if (!best &&
|
||||
dt9812[i].usb
|
||||
&& dt9812[i].usb->serial == devpriv->serial) {
|
||||
// We have an attaced device with matching ID
|
||||
best = &dt9812[i];
|
||||
}
|
||||
}
|
||||
if (!best) {
|
||||
best = first;
|
||||
}
|
||||
if (best) {
|
||||
down(&best->mutex);
|
||||
best->comedi = devpriv;
|
||||
best->serial = devpriv->serial;
|
||||
devpriv->slot = best;
|
||||
up(&best->mutex);
|
||||
}
|
||||
}
|
||||
up(&dt9812_mutex);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int dt9812_detach(comedi_device * dev)
|
||||
{
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static comedi_driver dt9812_comedi_driver = {
|
||||
.module = THIS_MODULE,
|
||||
.driver_name = "dt9812",
|
||||
.attach = dt9812_attach,
|
||||
.detach = dt9812_detach,
|
||||
};
|
||||
|
||||
static int __init usb_dt9812_init(void)
|
||||
{
|
||||
int result, i;
|
||||
|
||||
// Initialize all driver slots
|
||||
for (i = 0; i < DT9812_NUM_SLOTS; i++) {
|
||||
init_MUTEX(&dt9812[i].mutex);
|
||||
dt9812[i].serial = 0;
|
||||
dt9812[i].usb = NULL;
|
||||
dt9812[i].comedi = NULL;
|
||||
}
|
||||
dt9812[12].serial = 0x0;
|
||||
|
||||
// register with the USB subsystem
|
||||
result = usb_register(&dt9812_usb_driver);
|
||||
if (result) {
|
||||
err("usb_register failed. Error number %d", result);
|
||||
}
|
||||
// register with comedi
|
||||
result = comedi_driver_register(&dt9812_comedi_driver);
|
||||
if (result) {
|
||||
usb_deregister(&dt9812_usb_driver);
|
||||
err("comedi_driver_register failed. Error number %d", result);
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
static void __exit usb_dt9812_exit(void)
|
||||
{
|
||||
// unregister with comedi
|
||||
comedi_driver_unregister(&dt9812_comedi_driver);
|
||||
|
||||
/* deregister this driver with the USB subsystem */
|
||||
usb_deregister(&dt9812_usb_driver);
|
||||
}
|
||||
|
||||
module_init(usb_dt9812_init);
|
||||
module_exit(usb_dt9812_exit);
|
||||
|
||||
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)
|
||||
176
drivers/staging/comedi/drivers/dt9812.h
Normal file
176
drivers/staging/comedi/drivers/dt9812.h
Normal file
@ -0,0 +1,176 @@
|
||||
#ifndef __DT9812_H__
|
||||
#define __DT9812_H__
|
||||
|
||||
#define DT9812_DIAGS_BOARD_INFO_ADDR 0xFBFF
|
||||
#define DT9812_MAX_WRITE_CMD_PIPE_SIZE 32
|
||||
#define DT9812_MAX_READ_CMD_PIPE_SIZE 32
|
||||
|
||||
/*
|
||||
* See Silican Laboratories C8051F020/1/2/3 manual
|
||||
*/
|
||||
#define F020_SFR_P4 0x84
|
||||
#define F020_SFR_P1 0x90
|
||||
#define F020_SFR_P2 0xa0
|
||||
#define F020_SFR_P3 0xb0
|
||||
#define F020_SFR_AMX0CF 0xba
|
||||
#define F020_SFR_AMX0SL 0xbb
|
||||
#define F020_SFR_ADC0CF 0xbc
|
||||
#define F020_SFR_ADC0L 0xbe
|
||||
#define F020_SFR_ADC0H 0xbf
|
||||
#define F020_SFR_DAC0L 0xd2
|
||||
#define F020_SFR_DAC0H 0xd3
|
||||
#define F020_SFR_DAC0CN 0xd4
|
||||
#define F020_SFR_DAC1L 0xd5
|
||||
#define F020_SFR_DAC1H 0xd6
|
||||
#define F020_SFR_DAC1CN 0xd7
|
||||
#define F020_SFR_ADC0CN 0xe8
|
||||
|
||||
#define F020_MASK_ADC0CF_AMP0GN0 0x01
|
||||
#define F020_MASK_ADC0CF_AMP0GN1 0x02
|
||||
#define F020_MASK_ADC0CF_AMP0GN2 0x04
|
||||
|
||||
#define F020_MASK_ADC0CN_AD0EN 0x80
|
||||
#define F020_MASK_ADC0CN_AD0INT 0x20
|
||||
#define F020_MASK_ADC0CN_AD0BUSY 0x10
|
||||
|
||||
#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
|
||||
#if 0
|
||||
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_GAIN_0PT25 = 1,
|
||||
DT9812_GAIN_0PT5 = 2,
|
||||
DT9812_GAIN_1 = 4,
|
||||
DT9812_GAIN_2 = 8,
|
||||
DT9812_GAIN_4 = 16,
|
||||
DT9812_GAIN_8 = 32,
|
||||
DT9812_GAIN_16 = 64,
|
||||
} dt9812_gain_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
|
||||
} dt9812_usb_firmware_cmd_t;
|
||||
|
||||
typedef struct {
|
||||
u16 numbytes;
|
||||
u16 address;
|
||||
} dt9812_flash_data_t;
|
||||
|
||||
#define DT9812_MAX_NUM_MULTI_BYTE_RDS \
|
||||
((DT9812_MAX_WRITE_CMD_PIPE_SIZE - 4 - 1) / sizeof(u8))
|
||||
|
||||
typedef struct {
|
||||
u8 count;
|
||||
u8 address[DT9812_MAX_NUM_MULTI_BYTE_RDS];
|
||||
} dt9812_read_multi_t;
|
||||
|
||||
typedef struct {
|
||||
u8 address;
|
||||
u8 value;
|
||||
} dt9812_write_byte_t;
|
||||
|
||||
#define DT9812_MAX_NUM_MULTI_BYTE_WRTS \
|
||||
((DT9812_MAX_WRITE_CMD_PIPE_SIZE - 4 - 1) / sizeof(dt9812_write_byte_t))
|
||||
|
||||
typedef struct {
|
||||
u8 count;
|
||||
dt9812_write_byte_t write[DT9812_MAX_NUM_MULTI_BYTE_WRTS];
|
||||
} dt9812_write_multi_t;
|
||||
|
||||
typedef struct {
|
||||
u8 address;
|
||||
u8 and_mask;
|
||||
u8 or_value;
|
||||
} dt9812_rmw_byte_t;
|
||||
|
||||
#define DT9812_MAX_NUM_MULTI_BYTE_RMWS \
|
||||
((DT9812_MAX_WRITE_CMD_PIPE_SIZE - 4 - 1) / sizeof(dt9812_rmw_byte_t))
|
||||
|
||||
typedef struct {
|
||||
u8 count;
|
||||
dt9812_rmw_byte_t rmw[DT9812_MAX_NUM_MULTI_BYTE_RMWS];
|
||||
} dt9812_rmw_multi_t;
|
||||
|
||||
typedef struct dt9812_usb_cmd {
|
||||
|
||||
u32 cmd;
|
||||
union {
|
||||
dt9812_flash_data_t flash_data_info;
|
||||
dt9812_read_multi_t read_multi_info;
|
||||
dt9812_write_multi_t write_multi_info;
|
||||
dt9812_rmw_multi_t rmw_multi_info;
|
||||
} u;
|
||||
#if 0
|
||||
WRITE_BYTE_INFO WriteByteInfo;
|
||||
READ_BYTE_INFO ReadByteInfo;
|
||||
WRITE_MULTI_INFO WriteMultiInfo;
|
||||
READ_MULTI_INFO ReadMultiInfo;
|
||||
RMW_BYTE_INFO RMWByteInfo;
|
||||
RMW_MULTI_INFO RMWMultiInfo;
|
||||
DAC_THRESHOLD_INFO DacThresholdInfo;
|
||||
INT_ON_CHANGE_MASK_INFO IntOnChangeMaskInfo;
|
||||
CGL_INFO CglInfo;
|
||||
SUBSYSTEM_INFO SubsystemInfo;
|
||||
CAL_POT_CMD CalPotCmd;
|
||||
WRITE_DEV_BYTE_INFO WriteDevByteInfo;
|
||||
READ_DEV_BYTE_INFO ReadDevByteInfo;
|
||||
WRITE_DEV_MULTI_INFO WriteDevMultiInfo;
|
||||
READ_DEV_MULTI_INFO ReadDevMultiInfo;
|
||||
READ_SINGLE_VALUE_INFO ReadSingleValueInfo;
|
||||
WRITE_SINGLE_VALUE_INFO WriteSingleValueInfo;
|
||||
#endif
|
||||
} dt9812_usb_cmd_t;
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user