pcmuio.c revision 4344158f3ea32eefd4942915c76d35afdc11b76e
16baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 29e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * pcmuio.c 39e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * Comedi driver for Winsystems PC-104 based 48/96-channel DIO boards. 49e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * 59e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * COMEDI - Linux Control and Measurement Device Interface 69e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * Copyright (C) 2006 Calin A. Culianu <calin@ajvar.org> 79e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * 89e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * This program is free software; you can redistribute it and/or modify 99e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * it under the terms of the GNU General Public License as published by 109e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * the Free Software Foundation; either version 2 of the License, or 119e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * (at your option) any later version. 129e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * 139e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * This program is distributed in the hope that it will be useful, 149e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * but WITHOUT ANY WARRANTY; without even the implied warranty of 159e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 169e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * GNU General Public License for more details. 179e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten */ 186baef150380d561a4d695a6be4fc509821c23611Calin Culianu 196baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 209e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * Driver: pcmuio 219e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * Description: Winsystems PC-104 based 48/96-channel DIO boards. 229e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * Devices: (Winsystems) PCM-UIO48A [pcmuio48] 239e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * (Winsystems) PCM-UIO96A [pcmuio96] 249e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * Author: Calin Culianu <calin@ajvar.org> 259e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * Updated: Fri, 13 Jan 2006 12:01:01 -0500 269e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * Status: works 279e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * 289e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * A driver for the relatively straightforward-to-program PCM-UIO48A and 299e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * PCM-UIO96A boards from Winsystems. These boards use either one or two 309e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * (in the 96-DIO version) WS16C48 ASIC HighDensity I/O Chips (HDIO). This 319e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * chip is interesting in that each I/O line is individually programmable 329e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * for INPUT or OUTPUT (thus comedi_dio_config can be done on a per-channel 339e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * basis). Also, each chip supports edge-triggered interrupts for the first 349e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * 24 I/O lines. Of course, since the 96-channel version of the board has 359e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * two ASICs, it can detect polarity changes on up to 48 I/O lines. Since 369e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * this is essentially an (non-PnP) ISA board, I/O Address and IRQ selection 379e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * are done through jumpers on the board. You need to pass that information 389e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * to this driver as the first and second comedi_config option, respectively. 399e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * Note that the 48-channel version uses 16 bytes of IO memory and the 96- 409e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * channel version uses 32-bytes (in case you are worried about conflicts). 419e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * The 48-channel board is split into two 24-channel comedi subdevices. The 429e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * 96-channel board is split into 4 24-channel DIO subdevices. 439e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * 449e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * Note that IRQ support has been added, but it is untested. 459e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * 469e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * To use edge-detection IRQ support, pass the IRQs of both ASICS (for the 479e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * 96 channel version) or just 1 ASIC (for 48-channel version). Then, use 489e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * comedi_commands with TRIG_NOW. Your callback will be called each time an 499e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * edge is triggered, and the data values will be two sample_t's, which 509e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * should be concatenated to form one 32-bit unsigned int. This value is 519e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * the mask of channels that had edges detected from your channel list. Note 529e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * that the bits positions in the mask correspond to positions in your 539e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * chanlist when you specified the command and *not* channel id's! 549e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * 559e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * To set the polarity of the edge-detection interrupts pass a nonzero value 569e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * for either CR_RANGE or CR_AREF for edge-up polarity, or a zero value for 579e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * both CR_RANGE and CR_AREF if you want edge-down polarity. 589e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * 599e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * In the 48-channel version: 609e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * 619e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * On subdev 0, the first 24 channels channels are edge-detect channels. 629e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * 639e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * In the 96-channel board you have the following channels that can do edge 649e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * detection: 659e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * 669e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * subdev 0, channels 0-24 (first 24 channels of 1st ASIC) 679e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * subdev 2, channels 0-24 (first 24 channels of 2nd ASIC) 689e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * 699e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * Configuration Options: 709e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * [0] - I/O port base address 719e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * [1] - IRQ (for first ASIC, or first 24 channels) 729e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * [2] - IRQ (for second ASIC, pcmuio96 only - IRQ for chans 48-72 739e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten * can be the same as first irq!) 749e1087b5ae4c31c812e3f8a35256d7922a1cdbd6H Hartley Sweeten */ 756baef150380d561a4d695a6be4fc509821c23611Calin Culianu 76ce157f8032bbd46d9427034c335b0afd751da25dH Hartley Sweeten#include <linux/module.h> 7725436dc9d84f1be60ff549c9ab712bba2835f284Greg Kroah-Hartman#include <linux/interrupt.h> 785a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 796baef150380d561a4d695a6be4fc509821c23611Calin Culianu 80f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten#include "../comedidev.h" 8133782dd5edf8db3cdb7c81a3523bf743dd0209b7H Hartley Sweeten 82f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten#include "comedi_fc.h" 836baef150380d561a4d695a6be4fc509821c23611Calin Culianu 84f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten/* 85f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * Register I/O map 86f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 87f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * Offset Page 0 Page 1 Page 2 Page 3 88f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * ------ ----------- ----------- ----------- ----------- 89f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x00 Port 0 I/O Port 0 I/O Port 0 I/O Port 0 I/O 90f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x01 Port 1 I/O Port 1 I/O Port 1 I/O Port 1 I/O 91f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x02 Port 2 I/O Port 2 I/O Port 2 I/O Port 2 I/O 92f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x03 Port 3 I/O Port 3 I/O Port 3 I/O Port 3 I/O 93f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x04 Port 4 I/O Port 4 I/O Port 4 I/O Port 4 I/O 94f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x05 Port 5 I/O Port 5 I/O Port 5 I/O Port 5 I/O 95f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x06 INT_PENDING INT_PENDING INT_PENDING INT_PENDING 96f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x07 Page/Lock Page/Lock Page/Lock Page/Lock 97f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x08 N/A POL_0 ENAB_0 INT_ID0 98f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x09 N/A POL_1 ENAB_1 INT_ID1 99f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x0a N/A POL_2 ENAB_2 INT_ID2 100f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten */ 101f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_PORT_REG(x) (0x00 + (x)) 102f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_INT_PENDING_REG 0x06 103f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_PAGE_LOCK_REG 0x07 104f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_LOCK_PORT(x) ((1 << (x)) & 0x3f) 105f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_PAGE(x) (((x) & 0x3) << 6) 106f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_PAGE_MASK PCMUIO_PAGE(3) 107f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_PAGE_POL 1 108f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_PAGE_ENAB 2 109f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_PAGE_INT_ID 3 110f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_PAGE_REG(x) (0x08 + (x)) 111f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten 112b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten#define PCMUIO_ASIC_IOSIZE 0x10 113b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten#define PCMUIO_MAX_ASICS 2 1146baef150380d561a4d695a6be4fc509821c23611Calin Culianu 11570a6001aeffeaa12f2a1c21470e8f3bdfb6ef8e7Bill Pembertonstruct pcmuio_board { 1166baef150380d561a4d695a6be4fc509821c23611Calin Culianu const char *name; 1176baef150380d561a4d695a6be4fc509821c23611Calin Culianu const int num_asics; 11870a6001aeffeaa12f2a1c21470e8f3bdfb6ef8e7Bill Pemberton}; 1196baef150380d561a4d695a6be4fc509821c23611Calin Culianu 120fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweetenstatic const struct pcmuio_board pcmuio_boards[] = { 121fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweeten { 122fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweeten .name = "pcmuio48", 123fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweeten .num_asics = 1, 124fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweeten }, { 125fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweeten .name = "pcmuio96", 126fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweeten .num_asics = 2, 127fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweeten }, 128fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweeten}; 129fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweeten 130063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweetenstruct pcmuio_asic { 131063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spinlock_t pagelock; 132063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spinlock_t spinlock; 133063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten int enabled_mask; 134063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten int active; 135063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten int stop_count; 136063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten int continuous; 137e15849e54405152087cd343437747db8d931fcd7Bill Pemberton}; 1386baef150380d561a4d695a6be4fc509821c23611Calin Culianu 139055f6636d9eb27bc13236e07739e019496c21221Bill Pembertonstruct pcmuio_private { 140063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_asic asics[PCMUIO_MAX_ASICS]; 14104426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten unsigned int irq2; 142055f6636d9eb27bc13236e07739e019496c21221Bill Pemberton}; 1436baef150380d561a4d695a6be4fc509821c23611Calin Culianu 1444344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweetenstatic inline unsigned long pcmuio_asic_iobase(struct comedi_device *dev, 1454344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten int asic) 1464344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten{ 1474344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten return dev->iobase + (asic * PCMUIO_ASIC_IOSIZE); 1484344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten} 1494344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten 1504344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweetenstatic inline int pcmuio_subdevice_to_asic(struct comedi_subdevice *s) 1514344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten{ 1524344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten /* 1534344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten * subdevice 0 and 1 are handled by the first asic 1544344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten * subdevice 2 and 3 are handled by the second asic 1554344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten */ 1564344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten return s->index / 2; 1574344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten} 1584344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten 1594344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweetenstatic inline int pcmuio_subdevice_to_port(struct comedi_subdevice *s) 1604344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten{ 1614344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten /* 1624344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten * subdevice 0 and 2 use port registers 0-2 1634344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten * subdevice 1 and 3 use port registers 3-5 1644344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten */ 1654344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten return (s->index % 2) ? 3 : 0; 1664344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten} 1674344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten 168e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweetenstatic void pcmuio_write(struct comedi_device *dev, unsigned int val, 169e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten int asic, int page, int port) 170e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten{ 171099ec87df0ff7c2c66173876a9b8910aafb7ca39H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 172063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_asic *chip = &devpriv->asics[asic]; 1734344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten unsigned long iobase = pcmuio_asic_iobase(dev, asic); 174099ec87df0ff7c2c66173876a9b8910aafb7ca39H Hartley Sweeten unsigned long flags; 175e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten 176063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_lock_irqsave(&chip->pagelock, flags); 177e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten if (page == 0) { 178e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten /* Port registers are valid for any page */ 179e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb(val & 0xff, iobase + PCMUIO_PORT_REG(port + 0)); 180e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb((val >> 8) & 0xff, iobase + PCMUIO_PORT_REG(port + 1)); 181e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb((val >> 16) & 0xff, iobase + PCMUIO_PORT_REG(port + 2)); 182e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten } else { 183e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb(PCMUIO_PAGE(page), iobase + PCMUIO_PAGE_LOCK_REG); 184e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb(val & 0xff, iobase + PCMUIO_PAGE_REG(0)); 185e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb((val >> 8) & 0xff, iobase + PCMUIO_PAGE_REG(1)); 186e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb((val >> 16) & 0xff, iobase + PCMUIO_PAGE_REG(2)); 187e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten } 188063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_unlock_irqrestore(&chip->pagelock, flags); 189e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten} 190e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten 19189aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweetenstatic unsigned int pcmuio_read(struct comedi_device *dev, 19289aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten int asic, int page, int port) 19389aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten{ 194099ec87df0ff7c2c66173876a9b8910aafb7ca39H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 195063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_asic *chip = &devpriv->asics[asic]; 1964344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten unsigned long iobase = pcmuio_asic_iobase(dev, asic); 197099ec87df0ff7c2c66173876a9b8910aafb7ca39H Hartley Sweeten unsigned long flags; 19889aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten unsigned int val; 19989aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten 200063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_lock_irqsave(&chip->pagelock, flags); 20189aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten if (page == 0) { 20289aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten /* Port registers are valid for any page */ 20389aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val = inb(iobase + PCMUIO_PORT_REG(port + 0)); 20489aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val |= (inb(iobase + PCMUIO_PORT_REG(port + 1)) << 8); 20589aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val |= (inb(iobase + PCMUIO_PORT_REG(port + 2)) << 16); 20689aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten } else { 20789aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten outb(PCMUIO_PAGE(page), iobase + PCMUIO_PAGE_LOCK_REG); 20889aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val = inb(iobase + PCMUIO_PAGE_REG(0)); 20989aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val |= (inb(iobase + PCMUIO_PAGE_REG(1)) << 8); 21089aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val |= (inb(iobase + PCMUIO_PAGE_REG(2)) << 16); 21189aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten } 212063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_unlock_irqrestore(&chip->pagelock, flags); 21389aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten 21489aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten return val; 21589aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten} 21689aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten 2171fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten/* 2181fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * Each channel can be individually programmed for input or output. 2191fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * Writing a '0' to a channel causes the corresponding output pin 2201fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * to go to a high-z state (pulled high by an external 10K resistor). 2211fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * This allows it to be used as an input. When used in the input mode, 2221fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * a read reflects the inverted state of the I/O pin, such that a 2231fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * high on the pin will read as a '0' in the register. Writing a '1' 2241fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * to a bit position causes the pin to sink current (up to 12mA), 2251fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * effectively pulling it low. 2261fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten */ 2270a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int pcmuio_dio_insn_bits(struct comedi_device *dev, 2280a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 229beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten struct comedi_insn *insn, 230beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten unsigned int *data) 2316baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 2324344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten int asic = pcmuio_subdevice_to_asic(s); 2334344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten int port = pcmuio_subdevice_to_port(s); 234beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten unsigned int chanmask = (1 << s->n_chan) - 1; 235beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten unsigned int mask; 2361fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten unsigned int val; 2376baef150380d561a4d695a6be4fc509821c23611Calin Culianu 238beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten mask = comedi_dio_update_state(s, data); 2391fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten if (mask) { 240beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten /* 241beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten * Outputs are inverted, invert the state and 242beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten * update the channels. 243beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten * 244beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten * The s->io_bits mask makes sure the input channels 245beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten * are '0' so that the outputs pins stay in a high 246beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten * z-state. 247beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten */ 248beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten val = ~s->state & chanmask; 249beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten val &= s->io_bits; 2501fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten pcmuio_write(dev, val, asic, 0, port); 2516baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 2526baef150380d561a4d695a6be4fc509821c23611Calin Culianu 253beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten /* get inverted state of the channels from the port */ 254beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten val = pcmuio_read(dev, asic, 0, port); 255beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten 256beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten /* return the true state of the channels */ 257beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten data[1] = ~val & chanmask; 2586baef150380d561a4d695a6be4fc509821c23611Calin Culianu 259a2714e3e42e746d6c8525c35fdcc58fb60c2830dH Hartley Sweeten return insn->n; 2606baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 2616baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2620a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int pcmuio_dio_insn_config(struct comedi_device *dev, 2630a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 264ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten struct comedi_insn *insn, 265ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten unsigned int *data) 2666baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 2674344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten int asic = pcmuio_subdevice_to_asic(s); 2684344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten int port = pcmuio_subdevice_to_port(s); 269ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten int ret; 2706baef150380d561a4d695a6be4fc509821c23611Calin Culianu 271ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten ret = comedi_dio_insn_config(dev, s, insn, data, 0); 272ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten if (ret) 273ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten return ret; 274ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten 275ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten if (data[0] == INSN_CONFIG_DIO_INPUT) 2761fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten pcmuio_write(dev, s->io_bits, asic, 0, port); 2776baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2786baef150380d561a4d695a6be4fc509821c23611Calin Culianu return insn->n; 2796baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 2806baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2815c1f62a75ca29d91606fd6e8bdeb2cff88086e0fH Hartley Sweetenstatic void pcmuio_reset(struct comedi_device *dev) 282e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten{ 283a28b59957d3ad01481c2ea87aca50cfdb85417f2H Hartley Sweeten const struct pcmuio_board *board = comedi_board(dev); 2846baef150380d561a4d695a6be4fc509821c23611Calin Culianu int asic; 2856baef150380d561a4d695a6be4fc509821c23611Calin Culianu 286a28b59957d3ad01481c2ea87aca50cfdb85417f2H Hartley Sweeten for (asic = 0; asic < board->num_asics; ++asic) { 2876baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* first, clear all the DIO port bits */ 288e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, 0, 0); 289e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, 0, 3); 2906baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2916baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Next, clear all the paged registers for each page */ 292e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_POL, 0); 293e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_ENAB, 0); 294e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_INT_ID, 0); 2956baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 2966baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 2976baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2986b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweetenstatic void pcmuio_stop_intr(struct comedi_device *dev, 2996b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten struct comedi_subdevice *s) 3006b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten{ 301063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 3024344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten int asic = pcmuio_subdevice_to_asic(s); 303063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_asic *chip = &devpriv->asics[asic]; 3046b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 305063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->enabled_mask = 0; 306063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->active = 0; 307920e2ffbe243fb0555b2c238e26fe7dbc03db98cH Hartley Sweeten s->async->inttrig = NULL; 308e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten 309e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten /* disable all intrs for this subdev.. */ 310e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_ENAB, 0); 3116b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten} 3126b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 3133b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweetenstatic void pcmuio_handle_intr_subdev(struct comedi_device *dev, 3143b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten struct comedi_subdevice *s, 3153b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned triggered) 3163b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten{ 317063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 3184344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten int asic = pcmuio_subdevice_to_asic(s); 319063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_asic *chip = &devpriv->asics[asic]; 3203b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned int len = s->async->cmd.chanlist_len; 3213b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned oldevents = s->async->events; 3223b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned int val = 0; 3233b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned long flags; 3243b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned int i; 3253b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 326063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_lock_irqsave(&chip->spinlock, flags); 3273b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 328063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten if (!chip->active) 3293b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten goto done; 3303b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 331d3d2d75da52982968ddb25f715c86c65dde04903H Hartley Sweeten if (!(triggered & chip->enabled_mask)) 3323b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten goto done; 3333b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3343b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten for (i = 0; i < len; i++) { 3353b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned int chan = CR_CHAN(s->async->cmd.chanlist[i]); 336d3d2d75da52982968ddb25f715c86c65dde04903H Hartley Sweeten if (triggered & (1 << chan)) 337d3d2d75da52982968ddb25f715c86c65dde04903H Hartley Sweeten val |= (1 << i); 3383b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3393b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3403b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* Write the scan to the buffer. */ 3415c174c41d8a702ade02fbb125b15f58158e4d1daIan Abbott if (comedi_buf_put(s->async, val) && 3425c174c41d8a702ade02fbb125b15f58158e4d1daIan Abbott comedi_buf_put(s->async, val >> 16)) { 3433b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten s->async->events |= (COMEDI_CB_BLOCK | COMEDI_CB_EOS); 3443b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } else { 3453b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* Overflow! Stop acquisition!! */ 3463b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* TODO: STOP_ACQUISITION_CALL_HERE!! */ 3473b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten pcmuio_stop_intr(dev, s); 3483b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3493b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3503b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* Check for end of acquisition. */ 351063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten if (!chip->continuous) { 3523b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* stop_src == TRIG_COUNT */ 353063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten if (chip->stop_count > 0) { 354063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->stop_count--; 355063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten if (chip->stop_count == 0) { 3563b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten s->async->events |= COMEDI_CB_EOA; 3573b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* TODO: STOP_ACQUISITION_CALL_HERE!! */ 3583b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten pcmuio_stop_intr(dev, s); 3593b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3603b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3613b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3623b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3633b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweetendone: 364063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_unlock_irqrestore(&chip->spinlock, flags); 3653b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3663b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (oldevents != s->async->events) 3673b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten comedi_event(dev, s); 3683b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten} 3693b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3703b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweetenstatic int pcmuio_handle_asic_interrupt(struct comedi_device *dev, int asic) 3716baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 372741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten /* there are could be two asics so we can't use dev->read_subdev */ 373741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten struct comedi_subdevice *s = &dev->subdevices[asic * 2]; 3744344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten unsigned long iobase = pcmuio_asic_iobase(dev, asic); 375741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten unsigned int val; 3766baef150380d561a4d695a6be4fc509821c23611Calin Culianu 377741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten /* are there any interrupts pending */ 378741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten val = inb(iobase + PCMUIO_INT_PENDING_REG) & 0x07; 379741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten if (!val) 380741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten return 0; 3813b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 382741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten /* get, and clear, the pending interrupts */ 383741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten val = pcmuio_read(dev, asic, PCMUIO_PAGE_INT_ID, 0); 384741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_INT_ID, 0); 385741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten 386741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten /* handle the pending interrupts */ 387741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten pcmuio_handle_intr_subdev(dev, s, val); 388741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten 389741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten return 1; 3903b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten} 3913b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3925c1f62a75ca29d91606fd6e8bdeb2cff88086e0fH Hartley Sweetenstatic irqreturn_t pcmuio_interrupt(int irq, void *d) 3933b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten{ 3943b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten struct comedi_device *dev = d; 3953b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 39604426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten int handled = 0; 3976baef150380d561a4d695a6be4fc509821c23611Calin Culianu 39804426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (irq == dev->irq) 39904426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten handled += pcmuio_handle_asic_interrupt(dev, 0); 40004426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (irq == devpriv->irq2) 40104426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten handled += pcmuio_handle_asic_interrupt(dev, 1); 40204426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten 40304426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten return handled ? IRQ_HANDLED : IRQ_NONE; 4046baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 4056baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4060a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int pcmuio_start_intr(struct comedi_device *dev, 4070a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s) 4086baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 409063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 4104344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten int asic = pcmuio_subdevice_to_asic(s); 411063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_asic *chip = &devpriv->asics[asic]; 4129a1a6cf8ae5ca58171e117335b9983e3cfa2185cH Hartley Sweeten 413063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten if (!chip->continuous && chip->stop_count == 0) { 4146baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* An empty acquisition! */ 4156baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->async->events |= COMEDI_CB_EOA; 416063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->active = 0; 4176baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 1; 4186baef150380d561a4d695a6be4fc509821c23611Calin Culianu } else { 419ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd *cmd = &s->async->cmd; 4200d1ead4809161867651b6f19e2cd793d2408abfdH Hartley Sweeten unsigned bits = 0, pol_bits = 0, n; 4216baef150380d561a4d695a6be4fc509821c23611Calin Culianu 422063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->enabled_mask = 0; 423063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->active = 1; 4246baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (cmd->chanlist) { 4256baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (n = 0; n < cmd->chanlist_len; n++) { 4266baef150380d561a4d695a6be4fc509821c23611Calin Culianu bits |= (1U << CR_CHAN(cmd->chanlist[n])); 4276baef150380d561a4d695a6be4fc509821c23611Calin Culianu pol_bits |= (CR_AREF(cmd->chanlist[n]) 4280a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral || CR_RANGE(cmd-> 4290a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral chanlist[n]) ? 1U : 0U) 4300a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral << CR_CHAN(cmd->chanlist[n]); 4316baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4326baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 433dbe9c7929c6c0021414d61f85fe4e2f20f069e1cH Hartley Sweeten bits &= ((0x1 << s->n_chan) - 1); 434063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->enabled_mask = bits; 4356baef150380d561a4d695a6be4fc509821c23611Calin Culianu 436e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten /* set pol and enab intrs for this subdev.. */ 437e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, pol_bits, asic, PCMUIO_PAGE_POL, 0); 438e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, bits, asic, PCMUIO_PAGE_ENAB, 0); 4396baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4406baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 0; 4416baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 4426baef150380d561a4d695a6be4fc509821c23611Calin Culianu 443da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int pcmuio_cancel(struct comedi_device *dev, struct comedi_subdevice *s) 4446baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 445063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 4464344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten int asic = pcmuio_subdevice_to_asic(s); 447063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_asic *chip = &devpriv->asics[asic]; 4486baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long flags; 4496baef150380d561a4d695a6be4fc509821c23611Calin Culianu 450063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_lock_irqsave(&chip->spinlock, flags); 451063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten if (chip->active) 4526baef150380d561a4d695a6be4fc509821c23611Calin Culianu pcmuio_stop_intr(dev, s); 453063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_unlock_irqrestore(&chip->spinlock, flags); 4546baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4556baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 0; 4566baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 4576baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4586baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 4596baef150380d561a4d695a6be4fc509821c23611Calin Culianu * Internal trigger function to start acquisition for an 'INTERRUPT' subdevice. 4606baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 4616baef150380d561a4d695a6be4fc509821c23611Calin Culianustatic int 462da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonpcmuio_inttrig_start_intr(struct comedi_device *dev, struct comedi_subdevice *s, 4630a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral unsigned int trignum) 4646baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 465063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 4664344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten int asic = pcmuio_subdevice_to_asic(s); 467063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_asic *chip = &devpriv->asics[asic]; 4686baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long flags; 4696baef150380d561a4d695a6be4fc509821c23611Calin Culianu int event = 0; 4706baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4716baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (trignum != 0) 4726baef150380d561a4d695a6be4fc509821c23611Calin Culianu return -EINVAL; 4736baef150380d561a4d695a6be4fc509821c23611Calin Culianu 474063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_lock_irqsave(&chip->spinlock, flags); 475920e2ffbe243fb0555b2c238e26fe7dbc03db98cH Hartley Sweeten s->async->inttrig = NULL; 476063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten if (chip->active) 4776baef150380d561a4d695a6be4fc509821c23611Calin Culianu event = pcmuio_start_intr(dev, s); 4780389245f0c5692111c0dc8d997fc4af72d789472Ravishankar karkala Mallikarjunayya 479063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_unlock_irqrestore(&chip->spinlock, flags); 4806baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4810389245f0c5692111c0dc8d997fc4af72d789472Ravishankar karkala Mallikarjunayya if (event) 4826baef150380d561a4d695a6be4fc509821c23611Calin Culianu comedi_event(dev, s); 4836baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4846baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 1; 4856baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 4866baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4876baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 4886baef150380d561a4d695a6be4fc509821c23611Calin Culianu * 'do_cmd' function for an 'INTERRUPT' subdevice. 4896baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 490da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int pcmuio_cmd(struct comedi_device *dev, struct comedi_subdevice *s) 4916baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 492063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 493ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd *cmd = &s->async->cmd; 4944344158f3ea32eefd4942915c76d35afdc11b76eH Hartley Sweeten int asic = pcmuio_subdevice_to_asic(s); 495063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_asic *chip = &devpriv->asics[asic]; 4966baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long flags; 4976baef150380d561a4d695a6be4fc509821c23611Calin Culianu int event = 0; 4986baef150380d561a4d695a6be4fc509821c23611Calin Culianu 499063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_lock_irqsave(&chip->spinlock, flags); 500063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->active = 1; 5016baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5026baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Set up end of acquisition. */ 5036baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch (cmd->stop_src) { 5046baef150380d561a4d695a6be4fc509821c23611Calin Culianu case TRIG_COUNT: 505063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->continuous = 0; 506063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->stop_count = cmd->stop_arg; 5076baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 5086baef150380d561a4d695a6be4fc509821c23611Calin Culianu default: 5096baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* TRIG_NONE */ 510063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->continuous = 1; 511063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->stop_count = 0; 5126baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 5136baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 5146baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5156baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Set up start of acquisition. */ 5166baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch (cmd->start_src) { 5176baef150380d561a4d695a6be4fc509821c23611Calin Culianu case TRIG_INT: 5186baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->async->inttrig = pcmuio_inttrig_start_intr; 5196baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 5206baef150380d561a4d695a6be4fc509821c23611Calin Culianu default: 5216baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* TRIG_NOW */ 5226baef150380d561a4d695a6be4fc509821c23611Calin Culianu event = pcmuio_start_intr(dev, s); 5236baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 5246baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 525063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_unlock_irqrestore(&chip->spinlock, flags); 5266baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5270389245f0c5692111c0dc8d997fc4af72d789472Ravishankar karkala Mallikarjunayya if (event) 5286baef150380d561a4d695a6be4fc509821c23611Calin Culianu comedi_event(dev, s); 5296baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5306baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 0; 5316baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 5326baef150380d561a4d695a6be4fc509821c23611Calin Culianu 533f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweetenstatic int pcmuio_cmdtest(struct comedi_device *dev, 534f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten struct comedi_subdevice *s, 535f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten struct comedi_cmd *cmd) 5366baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 537f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten int err = 0; 538f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 539f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* Step 1 : check if triggers are trivially valid */ 540f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 541f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW | TRIG_INT); 542f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->scan_begin_src, TRIG_EXT); 543f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_NOW); 544f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT); 545f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE); 546f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 547f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten if (err) 548f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten return 1; 549f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 550f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* Step 2a : make sure trigger sources are unique */ 551f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 552f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_is_unique(cmd->start_src); 553f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_is_unique(cmd->stop_src); 554f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 555f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* Step 2b : and mutually compatible */ 556f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 557f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten if (err) 558f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten return 2; 559f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 560f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* Step 3: check if arguments are trivially valid */ 561f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 562f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0); 563f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0); 564f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0); 565f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len); 566f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 567f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten switch (cmd->stop_src) { 568f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten case TRIG_COUNT: 569f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* any count allowed */ 570f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten break; 571f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten case TRIG_NONE: 572f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0); 573f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten break; 574f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten default: 575f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten break; 576f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten } 577f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 578f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten if (err) 579f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten return 3; 580f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 581f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* step 4: fix up any arguments */ 582f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 583f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* if (err) return 4; */ 584f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 585f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten return 0; 5866baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 5876baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5886b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweetenstatic int pcmuio_attach(struct comedi_device *dev, struct comedi_devconfig *it) 5896b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten{ 590a28b59957d3ad01481c2ea87aca50cfdb85417f2H Hartley Sweeten const struct pcmuio_board *board = comedi_board(dev); 5916b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten struct comedi_subdevice *s; 5928099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten struct pcmuio_private *devpriv; 5931699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten int sdev_no, n_subdevs, asic; 5948b6c56949ffa83dbc2a6e8fa3f98b10a19372207H Hartley Sweeten int ret; 5956b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 59635626c2efecd6dad6ef67124ae2604385b717ed7H Hartley Sweeten ret = comedi_request_region(dev, it->options[0], 597b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten board->num_asics * PCMUIO_ASIC_IOSIZE); 59835626c2efecd6dad6ef67124ae2604385b717ed7H Hartley Sweeten if (ret) 59935626c2efecd6dad6ef67124ae2604385b717ed7H Hartley Sweeten return ret; 6006b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 6010bdab509bf9c6d838dc0a3b1d68bbf841fc20b5aH Hartley Sweeten devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); 602c34fa261b0ac3a862ccd3f71ee55a16b920dfc83H Hartley Sweeten if (!devpriv) 603c34fa261b0ac3a862ccd3f71ee55a16b920dfc83H Hartley Sweeten return -ENOMEM; 6046b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 605063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten for (asic = 0; asic < PCMUIO_MAX_ASICS; ++asic) { 606063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_asic *chip = &devpriv->asics[asic]; 607063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten 608063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_lock_init(&chip->pagelock); 609063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_lock_init(&chip->spinlock); 610063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten } 6116b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 61204426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten pcmuio_reset(dev); 61304426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten 61404426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (it->options[1]) { 61504426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten /* request the irq for the 1st asic */ 61604426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten ret = request_irq(it->options[1], pcmuio_interrupt, 0, 61704426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten dev->board_name, dev); 61804426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (ret == 0) 61904426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten dev->irq = it->options[1]; 62004426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten } 62104426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten 62204426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (board->num_asics == 2) { 62304426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (it->options[2] == dev->irq) { 62404426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten /* the same irq (or none) is used by both asics */ 62504426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten devpriv->irq2 = it->options[2]; 62604426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten } else if (it->options[2]) { 62704426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten /* request the irq for the 2nd asic */ 62804426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten ret = request_irq(it->options[2], pcmuio_interrupt, 0, 62904426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten dev->board_name, dev); 63004426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (ret == 0) 63104426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten devpriv->irq2 = it->options[2]; 63204426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten } 63304426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten } 63404426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten 635c87e1f26054388b661298a61e906a03fa2cd193eH Hartley Sweeten n_subdevs = board->num_asics * 2; 636eea6838b1206b0ac90110f1a6f58e101aa496e99H Hartley Sweeten 6378b6c56949ffa83dbc2a6e8fa3f98b10a19372207H Hartley Sweeten ret = comedi_alloc_subdevices(dev, n_subdevs); 6388b6c56949ffa83dbc2a6e8fa3f98b10a19372207H Hartley Sweeten if (ret) 6398b6c56949ffa83dbc2a6e8fa3f98b10a19372207H Hartley Sweeten return ret; 6406b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 6416b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten for (sdev_no = 0; sdev_no < (int)dev->n_subdevices; ++sdev_no) { 64268720ae68a94444387d56bc5a166396e33e420a5H Hartley Sweeten s = &dev->subdevices[sdev_no]; 6436b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->maxdata = 1; 6446b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->range_table = &range_digital; 6456b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->subdev_flags = SDF_READABLE | SDF_WRITABLE; 6466b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->type = COMEDI_SUBD_DIO; 6476b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->insn_bits = pcmuio_dio_insn_bits; 6486b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->insn_config = pcmuio_dio_insn_config; 649c87e1f26054388b661298a61e906a03fa2cd193eH Hartley Sweeten s->n_chan = 24; 6506b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 65104426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten /* subdevices 0 and 2 can suppport interrupts */ 65204426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if ((sdev_no == 0 && dev->irq) || 65304426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten (sdev_no == 2 && devpriv->irq2)) { 6541699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten /* setup the interrupt subdevice */ 6551699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten dev->read_subdev = s; 6561699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->subdev_flags |= SDF_CMD_READ; 6571699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->cancel = pcmuio_cancel; 6581699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->do_cmd = pcmuio_cmd; 6591699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->do_cmdtest = pcmuio_cmdtest; 6601699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->len_chanlist = s->n_chan; 6611699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten } else { 6621699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->len_chanlist = 1; 6636b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten } 6646b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten } 6656b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 666ee81b210fe9f761a3d34f6c061c67e6313df06bcH Hartley Sweeten return 0; 6676b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten} 6686b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 669484ecc95d9cdfa8b2f7029e2f3409cf078aed4abH Hartley Sweetenstatic void pcmuio_detach(struct comedi_device *dev) 6706b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten{ 6719a1a6cf8ae5ca58171e117335b9983e3cfa2185cH Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 6726b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 6732fd2bdfccae61efe18f6b92b6a45fbf936d75b48Ian Abbott if (devpriv) { 67404426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten pcmuio_reset(dev); 67504426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten 67604426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten /* free the 2nd irq if used, the core will free the 1st one */ 67704426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (devpriv->irq2 && devpriv->irq2 != dev->irq) 67804426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten free_irq(devpriv->irq2, dev); 6792fd2bdfccae61efe18f6b92b6a45fbf936d75b48Ian Abbott } 680a32c6d0084992d3e58a93120c9ce9527e80c651eH Hartley Sweeten comedi_legacy_detach(dev); 6816b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten} 6826b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 683294f930d98be86fb4f34302c718a49719650857fH Hartley Sweetenstatic struct comedi_driver pcmuio_driver = { 6846b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .driver_name = "pcmuio", 6856b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .module = THIS_MODULE, 6866b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .attach = pcmuio_attach, 6876b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .detach = pcmuio_detach, 6886b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .board_name = &pcmuio_boards[0].name, 6896b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .offset = sizeof(struct pcmuio_board), 6906b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .num_names = ARRAY_SIZE(pcmuio_boards), 6916b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten}; 692294f930d98be86fb4f34302c718a49719650857fH Hartley Sweetenmodule_comedi_driver(pcmuio_driver); 69390f703d30dd3e0c16ff80f35e34e511385a05ad5Arun Thomas 69490f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_AUTHOR("Comedi http://www.comedi.org"); 69590f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_DESCRIPTION("Comedi low-level driver"); 69690f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_LICENSE("GPL"); 697