pcmuio.c revision beecd01b720f3d907a5eacfc142090cf06326836
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 144e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweetenstatic void pcmuio_write(struct comedi_device *dev, unsigned int val, 145e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten int asic, int page, int port) 146e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten{ 147099ec87df0ff7c2c66173876a9b8910aafb7ca39H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 148063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_asic *chip = &devpriv->asics[asic]; 149b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten unsigned long iobase = dev->iobase + (asic * PCMUIO_ASIC_IOSIZE); 150099ec87df0ff7c2c66173876a9b8910aafb7ca39H Hartley Sweeten unsigned long flags; 151e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten 152063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_lock_irqsave(&chip->pagelock, flags); 153e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten if (page == 0) { 154e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten /* Port registers are valid for any page */ 155e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb(val & 0xff, iobase + PCMUIO_PORT_REG(port + 0)); 156e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb((val >> 8) & 0xff, iobase + PCMUIO_PORT_REG(port + 1)); 157e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb((val >> 16) & 0xff, iobase + PCMUIO_PORT_REG(port + 2)); 158e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten } else { 159e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb(PCMUIO_PAGE(page), iobase + PCMUIO_PAGE_LOCK_REG); 160e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb(val & 0xff, iobase + PCMUIO_PAGE_REG(0)); 161e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb((val >> 8) & 0xff, iobase + PCMUIO_PAGE_REG(1)); 162e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb((val >> 16) & 0xff, iobase + PCMUIO_PAGE_REG(2)); 163e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten } 164063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_unlock_irqrestore(&chip->pagelock, flags); 165e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten} 166e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten 16789aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweetenstatic unsigned int pcmuio_read(struct comedi_device *dev, 16889aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten int asic, int page, int port) 16989aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten{ 170099ec87df0ff7c2c66173876a9b8910aafb7ca39H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 171063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_asic *chip = &devpriv->asics[asic]; 172b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten unsigned long iobase = dev->iobase + (asic * PCMUIO_ASIC_IOSIZE); 173099ec87df0ff7c2c66173876a9b8910aafb7ca39H Hartley Sweeten unsigned long flags; 17489aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten unsigned int val; 17589aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten 176063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_lock_irqsave(&chip->pagelock, flags); 17789aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten if (page == 0) { 17889aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten /* Port registers are valid for any page */ 17989aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val = inb(iobase + PCMUIO_PORT_REG(port + 0)); 18089aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val |= (inb(iobase + PCMUIO_PORT_REG(port + 1)) << 8); 18189aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val |= (inb(iobase + PCMUIO_PORT_REG(port + 2)) << 16); 18289aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten } else { 18389aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten outb(PCMUIO_PAGE(page), iobase + PCMUIO_PAGE_LOCK_REG); 18489aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val = inb(iobase + PCMUIO_PAGE_REG(0)); 18589aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val |= (inb(iobase + PCMUIO_PAGE_REG(1)) << 8); 18689aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val |= (inb(iobase + PCMUIO_PAGE_REG(2)) << 16); 18789aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten } 188063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_unlock_irqrestore(&chip->pagelock, flags); 18989aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten 19089aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten return val; 19189aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten} 19289aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten 1931fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten/* 1941fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * Each channel can be individually programmed for input or output. 1951fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * Writing a '0' to a channel causes the corresponding output pin 1961fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * to go to a high-z state (pulled high by an external 10K resistor). 1971fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * This allows it to be used as an input. When used in the input mode, 1981fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * a read reflects the inverted state of the I/O pin, such that a 1991fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * high on the pin will read as a '0' in the register. Writing a '1' 2001fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * to a bit position causes the pin to sink current (up to 12mA), 2011fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * effectively pulling it low. 2021fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten */ 2030a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int pcmuio_dio_insn_bits(struct comedi_device *dev, 2040a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 205beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten struct comedi_insn *insn, 206beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten unsigned int *data) 2076baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 208beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten unsigned int chanmask = (1 << s->n_chan) - 1; 209c4ad65e6ce8a9cfe78d4c4b06b915c17a27ba011H Hartley Sweeten int asic = s->index / 2; 210c4ad65e6ce8a9cfe78d4c4b06b915c17a27ba011H Hartley Sweeten int port = (s->index % 2) ? 3 : 0; 211beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten unsigned int mask; 2121fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten unsigned int val; 2136baef150380d561a4d695a6be4fc509821c23611Calin Culianu 214beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten mask = comedi_dio_update_state(s, data); 2151fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten if (mask) { 216beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten /* 217beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten * Outputs are inverted, invert the state and 218beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten * update the channels. 219beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten * 220beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten * The s->io_bits mask makes sure the input channels 221beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten * are '0' so that the outputs pins stay in a high 222beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten * z-state. 223beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten */ 224beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten val = ~s->state & chanmask; 225beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten val &= s->io_bits; 2261fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten pcmuio_write(dev, val, asic, 0, port); 2276baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 2286baef150380d561a4d695a6be4fc509821c23611Calin Culianu 229beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten /* get inverted state of the channels from the port */ 230beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten val = pcmuio_read(dev, asic, 0, port); 231beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten 232beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten /* return the true state of the channels */ 233beecd01b720f3d907a5eacfc142090cf06326836H Hartley Sweeten data[1] = ~val & chanmask; 2346baef150380d561a4d695a6be4fc509821c23611Calin Culianu 235a2714e3e42e746d6c8525c35fdcc58fb60c2830dH Hartley Sweeten return insn->n; 2366baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 2376baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2380a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int pcmuio_dio_insn_config(struct comedi_device *dev, 2390a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 240ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten struct comedi_insn *insn, 241ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten unsigned int *data) 2426baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 243c4ad65e6ce8a9cfe78d4c4b06b915c17a27ba011H Hartley Sweeten int asic = s->index / 2; 244c4ad65e6ce8a9cfe78d4c4b06b915c17a27ba011H Hartley Sweeten int port = (s->index % 2) ? 3 : 0; 245ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten int ret; 2466baef150380d561a4d695a6be4fc509821c23611Calin Culianu 247ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten ret = comedi_dio_insn_config(dev, s, insn, data, 0); 248ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten if (ret) 249ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten return ret; 250ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten 251ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten if (data[0] == INSN_CONFIG_DIO_INPUT) 2521fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten pcmuio_write(dev, s->io_bits, asic, 0, port); 2536baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2546baef150380d561a4d695a6be4fc509821c23611Calin Culianu return insn->n; 2556baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 2566baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2575c1f62a75ca29d91606fd6e8bdeb2cff88086e0fH Hartley Sweetenstatic void pcmuio_reset(struct comedi_device *dev) 258e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten{ 259a28b59957d3ad01481c2ea87aca50cfdb85417f2H Hartley Sweeten const struct pcmuio_board *board = comedi_board(dev); 2606baef150380d561a4d695a6be4fc509821c23611Calin Culianu int asic; 2616baef150380d561a4d695a6be4fc509821c23611Calin Culianu 262a28b59957d3ad01481c2ea87aca50cfdb85417f2H Hartley Sweeten for (asic = 0; asic < board->num_asics; ++asic) { 2636baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* first, clear all the DIO port bits */ 264e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, 0, 0); 265e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, 0, 3); 2666baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2676baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Next, clear all the paged registers for each page */ 268e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_POL, 0); 269e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_ENAB, 0); 270e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_INT_ID, 0); 2716baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 2726baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 2736baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2746b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweetenstatic void pcmuio_stop_intr(struct comedi_device *dev, 2756b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten struct comedi_subdevice *s) 2766b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten{ 277063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 2780d1ead4809161867651b6f19e2cd793d2408abfdH Hartley Sweeten int asic = s->index / 2; 279063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_asic *chip = &devpriv->asics[asic]; 2806b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 281063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->enabled_mask = 0; 282063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->active = 0; 283920e2ffbe243fb0555b2c238e26fe7dbc03db98cH Hartley Sweeten s->async->inttrig = NULL; 284e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten 285e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten /* disable all intrs for this subdev.. */ 286e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_ENAB, 0); 2876b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten} 2886b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 2893b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweetenstatic void pcmuio_handle_intr_subdev(struct comedi_device *dev, 2903b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten struct comedi_subdevice *s, 2913b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned triggered) 2923b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten{ 293063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 294063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten int asic = s->index / 2; 295063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_asic *chip = &devpriv->asics[asic]; 2963b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned int len = s->async->cmd.chanlist_len; 2973b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned oldevents = s->async->events; 2983b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned int val = 0; 2993b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned long flags; 3003b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned mytrig; 3013b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned int i; 3023b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 303063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_lock_irqsave(&chip->spinlock, flags); 3043b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 305063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten if (!chip->active) 3063b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten goto done; 3073b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 30843d70ce9ac772647baf8aadef1aa0f071bfe7f36H Hartley Sweeten mytrig = triggered; 309dbe9c7929c6c0021414d61f85fe4e2f20f069e1cH Hartley Sweeten mytrig &= ((0x1 << s->n_chan) - 1); 3103b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 311063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten if (!(mytrig & chip->enabled_mask)) 3123b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten goto done; 3133b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3143b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten for (i = 0; i < len; i++) { 3153b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned int chan = CR_CHAN(s->async->cmd.chanlist[i]); 3163b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (mytrig & (1U << chan)) 3173b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten val |= (1U << i); 3183b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3193b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3203b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* Write the scan to the buffer. */ 3215c174c41d8a702ade02fbb125b15f58158e4d1daIan Abbott if (comedi_buf_put(s->async, val) && 3225c174c41d8a702ade02fbb125b15f58158e4d1daIan Abbott comedi_buf_put(s->async, val >> 16)) { 3233b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten s->async->events |= (COMEDI_CB_BLOCK | COMEDI_CB_EOS); 3243b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } else { 3253b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* Overflow! Stop acquisition!! */ 3263b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* TODO: STOP_ACQUISITION_CALL_HERE!! */ 3273b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten pcmuio_stop_intr(dev, s); 3283b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3293b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3303b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* Check for end of acquisition. */ 331063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten if (!chip->continuous) { 3323b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* stop_src == TRIG_COUNT */ 333063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten if (chip->stop_count > 0) { 334063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->stop_count--; 335063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten if (chip->stop_count == 0) { 3363b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten s->async->events |= COMEDI_CB_EOA; 3373b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* TODO: STOP_ACQUISITION_CALL_HERE!! */ 3383b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten pcmuio_stop_intr(dev, s); 3393b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3403b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3413b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3423b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3433b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweetendone: 344063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_unlock_irqrestore(&chip->spinlock, flags); 3453b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3463b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (oldevents != s->async->events) 3473b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten comedi_event(dev, s); 3483b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten} 3493b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3503b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweetenstatic int pcmuio_handle_asic_interrupt(struct comedi_device *dev, int asic) 3516baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 352741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten /* there are could be two asics so we can't use dev->read_subdev */ 353741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten struct comedi_subdevice *s = &dev->subdevices[asic * 2]; 354b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten unsigned long iobase = dev->iobase + (asic * PCMUIO_ASIC_IOSIZE); 355741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten unsigned int val; 3566baef150380d561a4d695a6be4fc509821c23611Calin Culianu 357741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten /* are there any interrupts pending */ 358741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten val = inb(iobase + PCMUIO_INT_PENDING_REG) & 0x07; 359741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten if (!val) 360741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten return 0; 3613b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 362741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten /* get, and clear, the pending interrupts */ 363741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten val = pcmuio_read(dev, asic, PCMUIO_PAGE_INT_ID, 0); 364741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_INT_ID, 0); 365741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten 366741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten /* handle the pending interrupts */ 367741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten pcmuio_handle_intr_subdev(dev, s, val); 368741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten 369741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten return 1; 3703b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten} 3713b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3725c1f62a75ca29d91606fd6e8bdeb2cff88086e0fH Hartley Sweetenstatic irqreturn_t pcmuio_interrupt(int irq, void *d) 3733b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten{ 3743b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten struct comedi_device *dev = d; 3753b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 37604426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten int handled = 0; 3776baef150380d561a4d695a6be4fc509821c23611Calin Culianu 37804426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (irq == dev->irq) 37904426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten handled += pcmuio_handle_asic_interrupt(dev, 0); 38004426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (irq == devpriv->irq2) 38104426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten handled += pcmuio_handle_asic_interrupt(dev, 1); 38204426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten 38304426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten return handled ? IRQ_HANDLED : IRQ_NONE; 3846baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 3856baef150380d561a4d695a6be4fc509821c23611Calin Culianu 3860a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int pcmuio_start_intr(struct comedi_device *dev, 3870a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s) 3886baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 389063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 390063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten int asic = s->index / 2; 391063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_asic *chip = &devpriv->asics[asic]; 3929a1a6cf8ae5ca58171e117335b9983e3cfa2185cH Hartley Sweeten 393063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten if (!chip->continuous && chip->stop_count == 0) { 3946baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* An empty acquisition! */ 3956baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->async->events |= COMEDI_CB_EOA; 396063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->active = 0; 3976baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 1; 3986baef150380d561a4d695a6be4fc509821c23611Calin Culianu } else { 399ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd *cmd = &s->async->cmd; 4000d1ead4809161867651b6f19e2cd793d2408abfdH Hartley Sweeten unsigned bits = 0, pol_bits = 0, n; 4016baef150380d561a4d695a6be4fc509821c23611Calin Culianu 402063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->enabled_mask = 0; 403063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->active = 1; 4046baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (cmd->chanlist) { 4056baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (n = 0; n < cmd->chanlist_len; n++) { 4066baef150380d561a4d695a6be4fc509821c23611Calin Culianu bits |= (1U << CR_CHAN(cmd->chanlist[n])); 4076baef150380d561a4d695a6be4fc509821c23611Calin Culianu pol_bits |= (CR_AREF(cmd->chanlist[n]) 4080a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral || CR_RANGE(cmd-> 4090a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral chanlist[n]) ? 1U : 0U) 4100a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral << CR_CHAN(cmd->chanlist[n]); 4116baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4126baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 413dbe9c7929c6c0021414d61f85fe4e2f20f069e1cH Hartley Sweeten bits &= ((0x1 << s->n_chan) - 1); 414063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->enabled_mask = bits; 4156baef150380d561a4d695a6be4fc509821c23611Calin Culianu 416e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten /* set pol and enab intrs for this subdev.. */ 417e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, pol_bits, asic, PCMUIO_PAGE_POL, 0); 418e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, bits, asic, PCMUIO_PAGE_ENAB, 0); 4196baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4206baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 0; 4216baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 4226baef150380d561a4d695a6be4fc509821c23611Calin Culianu 423da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int pcmuio_cancel(struct comedi_device *dev, struct comedi_subdevice *s) 4246baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 425063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 426063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten int asic = s->index / 2; 427063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_asic *chip = &devpriv->asics[asic]; 4286baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long flags; 4296baef150380d561a4d695a6be4fc509821c23611Calin Culianu 430063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_lock_irqsave(&chip->spinlock, flags); 431063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten if (chip->active) 4326baef150380d561a4d695a6be4fc509821c23611Calin Culianu pcmuio_stop_intr(dev, s); 433063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_unlock_irqrestore(&chip->spinlock, flags); 4346baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4356baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 0; 4366baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 4376baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4386baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 4396baef150380d561a4d695a6be4fc509821c23611Calin Culianu * Internal trigger function to start acquisition for an 'INTERRUPT' subdevice. 4406baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 4416baef150380d561a4d695a6be4fc509821c23611Calin Culianustatic int 442da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonpcmuio_inttrig_start_intr(struct comedi_device *dev, struct comedi_subdevice *s, 4430a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral unsigned int trignum) 4446baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 445063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 446063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten int asic = s->index / 2; 447063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_asic *chip = &devpriv->asics[asic]; 4486baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long flags; 4496baef150380d561a4d695a6be4fc509821c23611Calin Culianu int event = 0; 4506baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4516baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (trignum != 0) 4526baef150380d561a4d695a6be4fc509821c23611Calin Culianu return -EINVAL; 4536baef150380d561a4d695a6be4fc509821c23611Calin Culianu 454063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_lock_irqsave(&chip->spinlock, flags); 455920e2ffbe243fb0555b2c238e26fe7dbc03db98cH Hartley Sweeten s->async->inttrig = NULL; 456063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten if (chip->active) 4576baef150380d561a4d695a6be4fc509821c23611Calin Culianu event = pcmuio_start_intr(dev, s); 4580389245f0c5692111c0dc8d997fc4af72d789472Ravishankar karkala Mallikarjunayya 459063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_unlock_irqrestore(&chip->spinlock, flags); 4606baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4610389245f0c5692111c0dc8d997fc4af72d789472Ravishankar karkala Mallikarjunayya if (event) 4626baef150380d561a4d695a6be4fc509821c23611Calin Culianu comedi_event(dev, s); 4636baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4646baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 1; 4656baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 4666baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4676baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 4686baef150380d561a4d695a6be4fc509821c23611Calin Culianu * 'do_cmd' function for an 'INTERRUPT' subdevice. 4696baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 470da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int pcmuio_cmd(struct comedi_device *dev, struct comedi_subdevice *s) 4716baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 472063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 473ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd *cmd = &s->async->cmd; 474063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten int asic = s->index / 2; 475063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_asic *chip = &devpriv->asics[asic]; 4766baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long flags; 4776baef150380d561a4d695a6be4fc509821c23611Calin Culianu int event = 0; 4786baef150380d561a4d695a6be4fc509821c23611Calin Culianu 479063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_lock_irqsave(&chip->spinlock, flags); 480063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->active = 1; 4816baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4826baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Set up end of acquisition. */ 4836baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch (cmd->stop_src) { 4846baef150380d561a4d695a6be4fc509821c23611Calin Culianu case TRIG_COUNT: 485063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->continuous = 0; 486063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->stop_count = cmd->stop_arg; 4876baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 4886baef150380d561a4d695a6be4fc509821c23611Calin Culianu default: 4896baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* TRIG_NONE */ 490063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->continuous = 1; 491063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten chip->stop_count = 0; 4926baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 4936baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4946baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4956baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Set up start of acquisition. */ 4966baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch (cmd->start_src) { 4976baef150380d561a4d695a6be4fc509821c23611Calin Culianu case TRIG_INT: 4986baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->async->inttrig = pcmuio_inttrig_start_intr; 4996baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 5006baef150380d561a4d695a6be4fc509821c23611Calin Culianu default: 5016baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* TRIG_NOW */ 5026baef150380d561a4d695a6be4fc509821c23611Calin Culianu event = pcmuio_start_intr(dev, s); 5036baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 5046baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 505063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_unlock_irqrestore(&chip->spinlock, flags); 5066baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5070389245f0c5692111c0dc8d997fc4af72d789472Ravishankar karkala Mallikarjunayya if (event) 5086baef150380d561a4d695a6be4fc509821c23611Calin Culianu comedi_event(dev, s); 5096baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5106baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 0; 5116baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 5126baef150380d561a4d695a6be4fc509821c23611Calin Culianu 513f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweetenstatic int pcmuio_cmdtest(struct comedi_device *dev, 514f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten struct comedi_subdevice *s, 515f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten struct comedi_cmd *cmd) 5166baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 517f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten int err = 0; 518f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 519f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* Step 1 : check if triggers are trivially valid */ 520f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 521f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW | TRIG_INT); 522f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->scan_begin_src, TRIG_EXT); 523f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_NOW); 524f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT); 525f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE); 526f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 527f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten if (err) 528f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten return 1; 529f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 530f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* Step 2a : make sure trigger sources are unique */ 531f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 532f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_is_unique(cmd->start_src); 533f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_is_unique(cmd->stop_src); 534f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 535f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* Step 2b : and mutually compatible */ 536f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 537f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten if (err) 538f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten return 2; 539f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 540f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* Step 3: check if arguments are trivially valid */ 541f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 542f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0); 543f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0); 544f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0); 545f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len); 546f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 547f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten switch (cmd->stop_src) { 548f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten case TRIG_COUNT: 549f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* any count allowed */ 550f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten break; 551f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten case TRIG_NONE: 552f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0); 553f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten break; 554f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten default: 555f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten break; 556f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten } 557f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 558f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten if (err) 559f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten return 3; 560f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 561f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* step 4: fix up any arguments */ 562f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 563f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* if (err) return 4; */ 564f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 565f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten return 0; 5666baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 5676baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5686b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweetenstatic int pcmuio_attach(struct comedi_device *dev, struct comedi_devconfig *it) 5696b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten{ 570a28b59957d3ad01481c2ea87aca50cfdb85417f2H Hartley Sweeten const struct pcmuio_board *board = comedi_board(dev); 5716b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten struct comedi_subdevice *s; 5728099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten struct pcmuio_private *devpriv; 5731699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten int sdev_no, n_subdevs, asic; 5748b6c56949ffa83dbc2a6e8fa3f98b10a19372207H Hartley Sweeten int ret; 5756b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 57635626c2efecd6dad6ef67124ae2604385b717ed7H Hartley Sweeten ret = comedi_request_region(dev, it->options[0], 577b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten board->num_asics * PCMUIO_ASIC_IOSIZE); 57835626c2efecd6dad6ef67124ae2604385b717ed7H Hartley Sweeten if (ret) 57935626c2efecd6dad6ef67124ae2604385b717ed7H Hartley Sweeten return ret; 5806b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 5810bdab509bf9c6d838dc0a3b1d68bbf841fc20b5aH Hartley Sweeten devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); 582c34fa261b0ac3a862ccd3f71ee55a16b920dfc83H Hartley Sweeten if (!devpriv) 583c34fa261b0ac3a862ccd3f71ee55a16b920dfc83H Hartley Sweeten return -ENOMEM; 5846b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 585063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten for (asic = 0; asic < PCMUIO_MAX_ASICS; ++asic) { 586063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten struct pcmuio_asic *chip = &devpriv->asics[asic]; 587063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten 588063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_lock_init(&chip->pagelock); 589063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten spin_lock_init(&chip->spinlock); 590063b590413b5d132d542358e7975fe4955bfeb96H Hartley Sweeten } 5916b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 59204426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten pcmuio_reset(dev); 59304426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten 59404426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (it->options[1]) { 59504426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten /* request the irq for the 1st asic */ 59604426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten ret = request_irq(it->options[1], pcmuio_interrupt, 0, 59704426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten dev->board_name, dev); 59804426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (ret == 0) 59904426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten dev->irq = it->options[1]; 60004426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten } 60104426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten 60204426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (board->num_asics == 2) { 60304426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (it->options[2] == dev->irq) { 60404426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten /* the same irq (or none) is used by both asics */ 60504426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten devpriv->irq2 = it->options[2]; 60604426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten } else if (it->options[2]) { 60704426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten /* request the irq for the 2nd asic */ 60804426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten ret = request_irq(it->options[2], pcmuio_interrupt, 0, 60904426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten dev->board_name, dev); 61004426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (ret == 0) 61104426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten devpriv->irq2 = it->options[2]; 61204426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten } 61304426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten } 61404426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten 615c87e1f26054388b661298a61e906a03fa2cd193eH Hartley Sweeten n_subdevs = board->num_asics * 2; 616eea6838b1206b0ac90110f1a6f58e101aa496e99H Hartley Sweeten 6178b6c56949ffa83dbc2a6e8fa3f98b10a19372207H Hartley Sweeten ret = comedi_alloc_subdevices(dev, n_subdevs); 6188b6c56949ffa83dbc2a6e8fa3f98b10a19372207H Hartley Sweeten if (ret) 6198b6c56949ffa83dbc2a6e8fa3f98b10a19372207H Hartley Sweeten return ret; 6206b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 6216b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten for (sdev_no = 0; sdev_no < (int)dev->n_subdevices; ++sdev_no) { 62268720ae68a94444387d56bc5a166396e33e420a5H Hartley Sweeten s = &dev->subdevices[sdev_no]; 6236b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->maxdata = 1; 6246b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->range_table = &range_digital; 6256b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->subdev_flags = SDF_READABLE | SDF_WRITABLE; 6266b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->type = COMEDI_SUBD_DIO; 6276b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->insn_bits = pcmuio_dio_insn_bits; 6286b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->insn_config = pcmuio_dio_insn_config; 629c87e1f26054388b661298a61e906a03fa2cd193eH Hartley Sweeten s->n_chan = 24; 6306b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 63104426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten /* subdevices 0 and 2 can suppport interrupts */ 63204426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if ((sdev_no == 0 && dev->irq) || 63304426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten (sdev_no == 2 && devpriv->irq2)) { 6341699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten /* setup the interrupt subdevice */ 6351699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten dev->read_subdev = s; 6361699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->subdev_flags |= SDF_CMD_READ; 6371699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->cancel = pcmuio_cancel; 6381699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->do_cmd = pcmuio_cmd; 6391699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->do_cmdtest = pcmuio_cmdtest; 6401699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->len_chanlist = s->n_chan; 6411699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten } else { 6421699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->len_chanlist = 1; 6436b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten } 6446b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten } 6456b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 646ee81b210fe9f761a3d34f6c061c67e6313df06bcH Hartley Sweeten return 0; 6476b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten} 6486b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 649484ecc95d9cdfa8b2f7029e2f3409cf078aed4abH Hartley Sweetenstatic void pcmuio_detach(struct comedi_device *dev) 6506b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten{ 6519a1a6cf8ae5ca58171e117335b9983e3cfa2185cH Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 6526b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 6532fd2bdfccae61efe18f6b92b6a45fbf936d75b48Ian Abbott if (devpriv) { 65404426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten pcmuio_reset(dev); 65504426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten 65604426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten /* free the 2nd irq if used, the core will free the 1st one */ 65704426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (devpriv->irq2 && devpriv->irq2 != dev->irq) 65804426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten free_irq(devpriv->irq2, dev); 6592fd2bdfccae61efe18f6b92b6a45fbf936d75b48Ian Abbott } 660a32c6d0084992d3e58a93120c9ce9527e80c651eH Hartley Sweeten comedi_legacy_detach(dev); 6616b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten} 6626b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 663294f930d98be86fb4f34302c718a49719650857fH Hartley Sweetenstatic struct comedi_driver pcmuio_driver = { 6646b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .driver_name = "pcmuio", 6656b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .module = THIS_MODULE, 6666b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .attach = pcmuio_attach, 6676b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .detach = pcmuio_detach, 6686b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .board_name = &pcmuio_boards[0].name, 6696b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .offset = sizeof(struct pcmuio_board), 6706b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .num_names = ARRAY_SIZE(pcmuio_boards), 6716b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten}; 672294f930d98be86fb4f34302c718a49719650857fH Hartley Sweetenmodule_comedi_driver(pcmuio_driver); 67390f703d30dd3e0c16ff80f35e34e511385a05ad5Arun Thomas 67490f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_AUTHOR("Comedi http://www.comedi.org"); 67590f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_DESCRIPTION("Comedi low-level driver"); 67690f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_LICENSE("GPL"); 677