pcmuio.c revision 741ba8cdf0e938d131b49fda37f80057286e459b
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 130e15849e54405152087cd343437747db8d931fcd7Bill Pembertonstruct pcmuio_subdev_private { 1316baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* The below is only used for intr subdevices */ 1326baef150380d561a4d695a6be4fc509821c23611Calin Culianu struct { 133365c473e1da54e209aa8c01da2084c896f18fb20H Hartley Sweeten /* if non-negative, this subdev has an interrupt asic */ 134365c473e1da54e209aa8c01da2084c896f18fb20H Hartley Sweeten int asic; 135365c473e1da54e209aa8c01da2084c896f18fb20H Hartley Sweeten /* 136365c473e1da54e209aa8c01da2084c896f18fb20H Hartley Sweeten * subdev-relative channel mask for channels 137365c473e1da54e209aa8c01da2084c896f18fb20H Hartley Sweeten * we are interested in 138365c473e1da54e209aa8c01da2084c896f18fb20H Hartley Sweeten */ 139365c473e1da54e209aa8c01da2084c896f18fb20H Hartley Sweeten int enabled_mask; 1406baef150380d561a4d695a6be4fc509821c23611Calin Culianu int active; 1416baef150380d561a4d695a6be4fc509821c23611Calin Culianu int stop_count; 1426baef150380d561a4d695a6be4fc509821c23611Calin Culianu int continuous; 1436baef150380d561a4d695a6be4fc509821c23611Calin Culianu spinlock_t spinlock; 1446baef150380d561a4d695a6be4fc509821c23611Calin Culianu } intr; 145e15849e54405152087cd343437747db8d931fcd7Bill Pemberton}; 1466baef150380d561a4d695a6be4fc509821c23611Calin Culianu 147055f6636d9eb27bc13236e07739e019496c21221Bill Pembertonstruct pcmuio_private { 1486baef150380d561a4d695a6be4fc509821c23611Calin Culianu struct { 149099ec87df0ff7c2c66173876a9b8910aafb7ca39H Hartley Sweeten spinlock_t pagelock; 150b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten } asics[PCMUIO_MAX_ASICS]; 151e15849e54405152087cd343437747db8d931fcd7Bill Pemberton struct pcmuio_subdev_private *sprivs; 15204426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten unsigned int irq2; 153055f6636d9eb27bc13236e07739e019496c21221Bill Pemberton}; 1546baef150380d561a4d695a6be4fc509821c23611Calin Culianu 155e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweetenstatic void pcmuio_write(struct comedi_device *dev, unsigned int val, 156e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten int asic, int page, int port) 157e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten{ 158099ec87df0ff7c2c66173876a9b8910aafb7ca39H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 159b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten unsigned long iobase = dev->iobase + (asic * PCMUIO_ASIC_IOSIZE); 160099ec87df0ff7c2c66173876a9b8910aafb7ca39H Hartley Sweeten unsigned long flags; 161e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten 162099ec87df0ff7c2c66173876a9b8910aafb7ca39H Hartley Sweeten spin_lock_irqsave(&devpriv->asics[asic].pagelock, flags); 163e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten if (page == 0) { 164e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten /* Port registers are valid for any page */ 165e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb(val & 0xff, iobase + PCMUIO_PORT_REG(port + 0)); 166e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb((val >> 8) & 0xff, iobase + PCMUIO_PORT_REG(port + 1)); 167e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb((val >> 16) & 0xff, iobase + PCMUIO_PORT_REG(port + 2)); 168e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten } else { 169e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb(PCMUIO_PAGE(page), iobase + PCMUIO_PAGE_LOCK_REG); 170e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb(val & 0xff, iobase + PCMUIO_PAGE_REG(0)); 171e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb((val >> 8) & 0xff, iobase + PCMUIO_PAGE_REG(1)); 172e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb((val >> 16) & 0xff, iobase + PCMUIO_PAGE_REG(2)); 173e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten } 174099ec87df0ff7c2c66173876a9b8910aafb7ca39H Hartley Sweeten spin_unlock_irqrestore(&devpriv->asics[asic].pagelock, flags); 175e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten} 176e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten 17789aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweetenstatic unsigned int pcmuio_read(struct comedi_device *dev, 17889aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten int asic, int page, int port) 17989aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten{ 180099ec87df0ff7c2c66173876a9b8910aafb7ca39H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 181b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten unsigned long iobase = dev->iobase + (asic * PCMUIO_ASIC_IOSIZE); 182099ec87df0ff7c2c66173876a9b8910aafb7ca39H Hartley Sweeten unsigned long flags; 18389aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten unsigned int val; 18489aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten 185099ec87df0ff7c2c66173876a9b8910aafb7ca39H Hartley Sweeten spin_lock_irqsave(&devpriv->asics[asic].pagelock, flags); 18689aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten if (page == 0) { 18789aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten /* Port registers are valid for any page */ 18889aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val = inb(iobase + PCMUIO_PORT_REG(port + 0)); 18989aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val |= (inb(iobase + PCMUIO_PORT_REG(port + 1)) << 8); 19089aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val |= (inb(iobase + PCMUIO_PORT_REG(port + 2)) << 16); 19189aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten } else { 19289aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten outb(PCMUIO_PAGE(page), iobase + PCMUIO_PAGE_LOCK_REG); 19389aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val = inb(iobase + PCMUIO_PAGE_REG(0)); 19489aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val |= (inb(iobase + PCMUIO_PAGE_REG(1)) << 8); 19589aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val |= (inb(iobase + PCMUIO_PAGE_REG(2)) << 16); 19689aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten } 197099ec87df0ff7c2c66173876a9b8910aafb7ca39H Hartley Sweeten spin_unlock_irqrestore(&devpriv->asics[asic].pagelock, flags); 19889aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten 19989aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten return val; 20089aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten} 20189aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten 2021fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten/* 2031fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * Each channel can be individually programmed for input or output. 2041fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * Writing a '0' to a channel causes the corresponding output pin 2051fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * to go to a high-z state (pulled high by an external 10K resistor). 2061fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * This allows it to be used as an input. When used in the input mode, 2071fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * a read reflects the inverted state of the I/O pin, such that a 2081fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * high on the pin will read as a '0' in the register. Writing a '1' 2091fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * to a bit position causes the pin to sink current (up to 12mA), 2101fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten * effectively pulling it low. 2111fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten */ 2120a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int pcmuio_dio_insn_bits(struct comedi_device *dev, 2130a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 2140a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data) 2156baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 2161fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten unsigned int mask = data[0] & s->io_bits; /* outputs only */ 2171fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten unsigned int bits = data[1]; 218c4ad65e6ce8a9cfe78d4c4b06b915c17a27ba011H Hartley Sweeten int asic = s->index / 2; 219c4ad65e6ce8a9cfe78d4c4b06b915c17a27ba011H Hartley Sweeten int port = (s->index % 2) ? 3 : 0; 2201fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten unsigned int val; 2216baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2221fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten /* get inverted state of the channels from the port */ 2231fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten val = pcmuio_read(dev, asic, 0, port); 2246baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2251fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten /* get the true state of the channels */ 2261fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten s->state = val ^ ((0x1 << s->n_chan) - 1); 2276baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2281fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten if (mask) { 2291fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten s->state &= ~mask; 2301fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten s->state |= (mask & bits); 2316baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2321fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten /* invert the state and update the channels */ 2331fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten val = s->state ^ ((0x1 << s->n_chan) - 1); 2341fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten pcmuio_write(dev, val, asic, 0, port); 2356baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 2366baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2371fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten data[1] = s->state; 2386baef150380d561a4d695a6be4fc509821c23611Calin Culianu 239a2714e3e42e746d6c8525c35fdcc58fb60c2830dH Hartley Sweeten return insn->n; 2406baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 2416baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2420a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int pcmuio_dio_insn_config(struct comedi_device *dev, 2430a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 244ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten struct comedi_insn *insn, 245ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten unsigned int *data) 2466baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 247c4ad65e6ce8a9cfe78d4c4b06b915c17a27ba011H Hartley Sweeten int asic = s->index / 2; 248c4ad65e6ce8a9cfe78d4c4b06b915c17a27ba011H Hartley Sweeten int port = (s->index % 2) ? 3 : 0; 249ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten int ret; 2506baef150380d561a4d695a6be4fc509821c23611Calin Culianu 251ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten ret = comedi_dio_insn_config(dev, s, insn, data, 0); 252ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten if (ret) 253ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten return ret; 254ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten 255ddf62f2c7bd041d35095b525ab33e3a3e0829aaaH Hartley Sweeten if (data[0] == INSN_CONFIG_DIO_INPUT) 2561fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten pcmuio_write(dev, s->io_bits, asic, 0, port); 2576baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2586baef150380d561a4d695a6be4fc509821c23611Calin Culianu return insn->n; 2596baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 2606baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2615c1f62a75ca29d91606fd6e8bdeb2cff88086e0fH Hartley Sweetenstatic void pcmuio_reset(struct comedi_device *dev) 262e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten{ 263a28b59957d3ad01481c2ea87aca50cfdb85417f2H Hartley Sweeten const struct pcmuio_board *board = comedi_board(dev); 2646baef150380d561a4d695a6be4fc509821c23611Calin Culianu int asic; 2656baef150380d561a4d695a6be4fc509821c23611Calin Culianu 266a28b59957d3ad01481c2ea87aca50cfdb85417f2H Hartley Sweeten for (asic = 0; asic < board->num_asics; ++asic) { 2676baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* first, clear all the DIO port bits */ 268e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, 0, 0); 269e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, 0, 3); 2706baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2716baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Next, clear all the paged registers for each page */ 272e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_POL, 0); 273e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_ENAB, 0); 274e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_INT_ID, 0); 2756baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 2766baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 2776baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2786b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweetenstatic void pcmuio_stop_intr(struct comedi_device *dev, 2796b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten struct comedi_subdevice *s) 2806b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten{ 2818099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten struct pcmuio_subdev_private *subpriv = s->private; 282e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten int asic; 2836b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 2846b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten asic = subpriv->intr.asic; 2856b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten if (asic < 0) 2866b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten return; /* not an interrupt subdev */ 2876b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 2886b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten subpriv->intr.enabled_mask = 0; 2896b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten subpriv->intr.active = 0; 290920e2ffbe243fb0555b2c238e26fe7dbc03db98cH Hartley Sweeten s->async->inttrig = NULL; 291e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten 292e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten /* disable all intrs for this subdev.. */ 293e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_ENAB, 0); 2946b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten} 2956b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 2963b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweetenstatic void pcmuio_handle_intr_subdev(struct comedi_device *dev, 2973b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten struct comedi_subdevice *s, 2983b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned triggered) 2993b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten{ 3003b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten struct pcmuio_subdev_private *subpriv = s->private; 3013b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned int len = s->async->cmd.chanlist_len; 3023b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned oldevents = s->async->events; 3033b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned int val = 0; 3043b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned long flags; 3053b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned mytrig; 3063b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned int i; 3073b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3083b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten spin_lock_irqsave(&subpriv->intr.spinlock, flags); 3093b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3103b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (!subpriv->intr.active) 3113b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten goto done; 3123b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 31343d70ce9ac772647baf8aadef1aa0f071bfe7f36H Hartley Sweeten mytrig = triggered; 314dbe9c7929c6c0021414d61f85fe4e2f20f069e1cH Hartley Sweeten mytrig &= ((0x1 << s->n_chan) - 1); 3153b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3163b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (!(mytrig & subpriv->intr.enabled_mask)) 3173b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten goto done; 3183b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3193b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten for (i = 0; i < len; i++) { 3203b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned int chan = CR_CHAN(s->async->cmd.chanlist[i]); 3213b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (mytrig & (1U << chan)) 3223b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten val |= (1U << i); 3233b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3243b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3253b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* Write the scan to the buffer. */ 3265c174c41d8a702ade02fbb125b15f58158e4d1daIan Abbott if (comedi_buf_put(s->async, val) && 3275c174c41d8a702ade02fbb125b15f58158e4d1daIan Abbott comedi_buf_put(s->async, val >> 16)) { 3283b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten s->async->events |= (COMEDI_CB_BLOCK | COMEDI_CB_EOS); 3293b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } else { 3303b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* Overflow! Stop acquisition!! */ 3313b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* TODO: STOP_ACQUISITION_CALL_HERE!! */ 3323b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten pcmuio_stop_intr(dev, s); 3333b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3343b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3353b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* Check for end of acquisition. */ 3363b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (!subpriv->intr.continuous) { 3373b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* stop_src == TRIG_COUNT */ 3383b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (subpriv->intr.stop_count > 0) { 3393b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten subpriv->intr.stop_count--; 3403b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (subpriv->intr.stop_count == 0) { 3413b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten s->async->events |= COMEDI_CB_EOA; 3423b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* TODO: STOP_ACQUISITION_CALL_HERE!! */ 3433b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten pcmuio_stop_intr(dev, s); 3443b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3453b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3463b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3473b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3483b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweetendone: 3493b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten spin_unlock_irqrestore(&subpriv->intr.spinlock, flags); 3503b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3513b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (oldevents != s->async->events) 3523b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten comedi_event(dev, s); 3533b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten} 3543b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3553b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweetenstatic int pcmuio_handle_asic_interrupt(struct comedi_device *dev, int asic) 3566baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 357741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten /* there are could be two asics so we can't use dev->read_subdev */ 358741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten struct comedi_subdevice *s = &dev->subdevices[asic * 2]; 359b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten unsigned long iobase = dev->iobase + (asic * PCMUIO_ASIC_IOSIZE); 360741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten unsigned int val; 3616baef150380d561a4d695a6be4fc509821c23611Calin Culianu 362741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten /* are there any interrupts pending */ 363741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten val = inb(iobase + PCMUIO_INT_PENDING_REG) & 0x07; 364741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten if (!val) 365741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten return 0; 3663b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 367741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten /* get, and clear, the pending interrupts */ 368741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten val = pcmuio_read(dev, asic, PCMUIO_PAGE_INT_ID, 0); 369741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_INT_ID, 0); 370741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten 371741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten /* handle the pending interrupts */ 372741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten pcmuio_handle_intr_subdev(dev, s, val); 373741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten 374741ba8cdf0e938d131b49fda37f80057286e459bH Hartley Sweeten return 1; 3753b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten} 3763b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3775c1f62a75ca29d91606fd6e8bdeb2cff88086e0fH Hartley Sweetenstatic irqreturn_t pcmuio_interrupt(int irq, void *d) 3783b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten{ 3793b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten struct comedi_device *dev = d; 3803b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 38104426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten int handled = 0; 3826baef150380d561a4d695a6be4fc509821c23611Calin Culianu 38304426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (irq == dev->irq) 38404426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten handled += pcmuio_handle_asic_interrupt(dev, 0); 38504426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (irq == devpriv->irq2) 38604426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten handled += pcmuio_handle_asic_interrupt(dev, 1); 38704426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten 38804426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten return handled ? IRQ_HANDLED : IRQ_NONE; 3896baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 3906baef150380d561a4d695a6be4fc509821c23611Calin Culianu 3910a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int pcmuio_start_intr(struct comedi_device *dev, 3920a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s) 3936baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 3948099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten struct pcmuio_subdev_private *subpriv = s->private; 3959a1a6cf8ae5ca58171e117335b9983e3cfa2185cH Hartley Sweeten 3966baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (!subpriv->intr.continuous && subpriv->intr.stop_count == 0) { 3976baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* An empty acquisition! */ 3986baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->async->events |= COMEDI_CB_EOA; 3996baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.active = 0; 4006baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 1; 4016baef150380d561a4d695a6be4fc509821c23611Calin Culianu } else { 4026baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned bits = 0, pol_bits = 0, n; 403e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten int asic; 404ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd *cmd = &s->async->cmd; 4056baef150380d561a4d695a6be4fc509821c23611Calin Culianu 406c3744138715045adb316284ee7a1e608f0278f6cBill Pemberton asic = subpriv->intr.asic; 407c3744138715045adb316284ee7a1e608f0278f6cBill Pemberton if (asic < 0) 4086baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 1; /* not an interrupt 4096baef150380d561a4d695a6be4fc509821c23611Calin Culianu subdev */ 4106baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.enabled_mask = 0; 4116baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.active = 1; 4126baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (cmd->chanlist) { 4136baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (n = 0; n < cmd->chanlist_len; n++) { 4146baef150380d561a4d695a6be4fc509821c23611Calin Culianu bits |= (1U << CR_CHAN(cmd->chanlist[n])); 4156baef150380d561a4d695a6be4fc509821c23611Calin Culianu pol_bits |= (CR_AREF(cmd->chanlist[n]) 4160a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral || CR_RANGE(cmd-> 4170a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral chanlist[n]) ? 1U : 0U) 4180a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral << CR_CHAN(cmd->chanlist[n]); 4196baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4206baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 421dbe9c7929c6c0021414d61f85fe4e2f20f069e1cH Hartley Sweeten bits &= ((0x1 << s->n_chan) - 1); 4226baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.enabled_mask = bits; 4236baef150380d561a4d695a6be4fc509821c23611Calin Culianu 424e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten /* set pol and enab intrs for this subdev.. */ 425e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, pol_bits, asic, PCMUIO_PAGE_POL, 0); 426e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, bits, asic, PCMUIO_PAGE_ENAB, 0); 4276baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4286baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 0; 4296baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 4306baef150380d561a4d695a6be4fc509821c23611Calin Culianu 431da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int pcmuio_cancel(struct comedi_device *dev, struct comedi_subdevice *s) 4326baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 4338099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten struct pcmuio_subdev_private *subpriv = s->private; 4346baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long flags; 4356baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4365f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_lock_irqsave(&subpriv->intr.spinlock, flags); 4376baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (subpriv->intr.active) 4386baef150380d561a4d695a6be4fc509821c23611Calin Culianu pcmuio_stop_intr(dev, s); 4395f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_unlock_irqrestore(&subpriv->intr.spinlock, flags); 4406baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4416baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 0; 4426baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 4436baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4446baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 4456baef150380d561a4d695a6be4fc509821c23611Calin Culianu * Internal trigger function to start acquisition for an 'INTERRUPT' subdevice. 4466baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 4476baef150380d561a4d695a6be4fc509821c23611Calin Culianustatic int 448da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonpcmuio_inttrig_start_intr(struct comedi_device *dev, struct comedi_subdevice *s, 4490a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral unsigned int trignum) 4506baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 4518099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten struct pcmuio_subdev_private *subpriv = s->private; 4526baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long flags; 4536baef150380d561a4d695a6be4fc509821c23611Calin Culianu int event = 0; 4546baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4556baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (trignum != 0) 4566baef150380d561a4d695a6be4fc509821c23611Calin Culianu return -EINVAL; 4576baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4585f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_lock_irqsave(&subpriv->intr.spinlock, flags); 459920e2ffbe243fb0555b2c238e26fe7dbc03db98cH Hartley Sweeten s->async->inttrig = NULL; 4600389245f0c5692111c0dc8d997fc4af72d789472Ravishankar karkala Mallikarjunayya if (subpriv->intr.active) 4616baef150380d561a4d695a6be4fc509821c23611Calin Culianu event = pcmuio_start_intr(dev, s); 4620389245f0c5692111c0dc8d997fc4af72d789472Ravishankar karkala Mallikarjunayya 4635f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_unlock_irqrestore(&subpriv->intr.spinlock, flags); 4646baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4650389245f0c5692111c0dc8d997fc4af72d789472Ravishankar karkala Mallikarjunayya if (event) 4666baef150380d561a4d695a6be4fc509821c23611Calin Culianu comedi_event(dev, s); 4676baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4686baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 1; 4696baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 4706baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4716baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 4726baef150380d561a4d695a6be4fc509821c23611Calin Culianu * 'do_cmd' function for an 'INTERRUPT' subdevice. 4736baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 474da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int pcmuio_cmd(struct comedi_device *dev, struct comedi_subdevice *s) 4756baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 4768099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten struct pcmuio_subdev_private *subpriv = s->private; 477ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd *cmd = &s->async->cmd; 4786baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long flags; 4796baef150380d561a4d695a6be4fc509821c23611Calin Culianu int event = 0; 4806baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4815f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_lock_irqsave(&subpriv->intr.spinlock, flags); 4826baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.active = 1; 4836baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4846baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Set up end of acquisition. */ 4856baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch (cmd->stop_src) { 4866baef150380d561a4d695a6be4fc509821c23611Calin Culianu case TRIG_COUNT: 4876baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.continuous = 0; 4886baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.stop_count = cmd->stop_arg; 4896baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 4906baef150380d561a4d695a6be4fc509821c23611Calin Culianu default: 4916baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* TRIG_NONE */ 4926baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.continuous = 1; 4936baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.stop_count = 0; 4946baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 4956baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4966baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4976baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Set up start of acquisition. */ 4986baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch (cmd->start_src) { 4996baef150380d561a4d695a6be4fc509821c23611Calin Culianu case TRIG_INT: 5006baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->async->inttrig = pcmuio_inttrig_start_intr; 5016baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 5026baef150380d561a4d695a6be4fc509821c23611Calin Culianu default: 5036baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* TRIG_NOW */ 5046baef150380d561a4d695a6be4fc509821c23611Calin Culianu event = pcmuio_start_intr(dev, s); 5056baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 5066baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 5075f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_unlock_irqrestore(&subpriv->intr.spinlock, flags); 5086baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5090389245f0c5692111c0dc8d997fc4af72d789472Ravishankar karkala Mallikarjunayya if (event) 5106baef150380d561a4d695a6be4fc509821c23611Calin Culianu comedi_event(dev, s); 5116baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5126baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 0; 5136baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 5146baef150380d561a4d695a6be4fc509821c23611Calin Culianu 515f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweetenstatic int pcmuio_cmdtest(struct comedi_device *dev, 516f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten struct comedi_subdevice *s, 517f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten struct comedi_cmd *cmd) 5186baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 519f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten int err = 0; 520f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 521f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* Step 1 : check if triggers are trivially valid */ 522f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 523f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW | TRIG_INT); 524f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->scan_begin_src, TRIG_EXT); 525f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_NOW); 526f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT); 527f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE); 528f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 529f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten if (err) 530f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten return 1; 531f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 532f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* Step 2a : make sure trigger sources are unique */ 533f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 534f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_is_unique(cmd->start_src); 535f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_is_unique(cmd->stop_src); 536f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 537f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* Step 2b : and mutually compatible */ 538f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 539f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten if (err) 540f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten return 2; 541f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 542f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* Step 3: check if arguments are trivially valid */ 543f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 544f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0); 545f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0); 546f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0); 547f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len); 548f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 549f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten switch (cmd->stop_src) { 550f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten case TRIG_COUNT: 551f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* any count allowed */ 552f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten break; 553f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten case TRIG_NONE: 554f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0); 555f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten break; 556f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten default: 557f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten break; 558f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten } 559f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 560f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten if (err) 561f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten return 3; 562f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 563f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* step 4: fix up any arguments */ 564f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 565f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* if (err) return 4; */ 566f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 567f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten return 0; 5686baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 5696baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5706b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweetenstatic int pcmuio_attach(struct comedi_device *dev, struct comedi_devconfig *it) 5716b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten{ 572a28b59957d3ad01481c2ea87aca50cfdb85417f2H Hartley Sweeten const struct pcmuio_board *board = comedi_board(dev); 5736b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten struct comedi_subdevice *s; 5748099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten struct pcmuio_private *devpriv; 5758099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten struct pcmuio_subdev_private *subpriv; 5761699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten int sdev_no, n_subdevs, asic; 5778b6c56949ffa83dbc2a6e8fa3f98b10a19372207H Hartley Sweeten int ret; 5786b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 57935626c2efecd6dad6ef67124ae2604385b717ed7H Hartley Sweeten ret = comedi_request_region(dev, it->options[0], 580b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten board->num_asics * PCMUIO_ASIC_IOSIZE); 58135626c2efecd6dad6ef67124ae2604385b717ed7H Hartley Sweeten if (ret) 58235626c2efecd6dad6ef67124ae2604385b717ed7H Hartley Sweeten return ret; 5836b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 5840bdab509bf9c6d838dc0a3b1d68bbf841fc20b5aH Hartley Sweeten devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); 585c34fa261b0ac3a862ccd3f71ee55a16b920dfc83H Hartley Sweeten if (!devpriv) 586c34fa261b0ac3a862ccd3f71ee55a16b920dfc83H Hartley Sweeten return -ENOMEM; 5876b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 588b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten for (asic = 0; asic < PCMUIO_MAX_ASICS; ++asic) 589099ec87df0ff7c2c66173876a9b8910aafb7ca39H Hartley Sweeten spin_lock_init(&devpriv->asics[asic].pagelock); 5906b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 59104426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten pcmuio_reset(dev); 59204426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten 59304426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (it->options[1]) { 59404426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten /* request the irq for the 1st asic */ 59504426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten ret = request_irq(it->options[1], pcmuio_interrupt, 0, 59604426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten dev->board_name, dev); 59704426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (ret == 0) 59804426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten dev->irq = it->options[1]; 59904426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten } 60004426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten 60104426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (board->num_asics == 2) { 60204426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (it->options[2] == dev->irq) { 60304426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten /* the same irq (or none) is used by both asics */ 60404426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten devpriv->irq2 = it->options[2]; 60504426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten } else if (it->options[2]) { 60604426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten /* request the irq for the 2nd asic */ 60704426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten ret = request_irq(it->options[2], pcmuio_interrupt, 0, 60804426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten dev->board_name, dev); 60904426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (ret == 0) 61004426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten devpriv->irq2 = it->options[2]; 61104426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten } 61204426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten } 61304426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten 614c87e1f26054388b661298a61e906a03fa2cd193eH Hartley Sweeten n_subdevs = board->num_asics * 2; 615e99f0f073d23795a3e58782a28431685c28ba6c4H Hartley Sweeten devpriv->sprivs = kcalloc(n_subdevs, sizeof(*subpriv), GFP_KERNEL); 61678110bb8dc4a7ff331bfa3cfe7d4e287cfb3f22bJoe Perches if (!devpriv->sprivs) 6176b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten return -ENOMEM; 618eea6838b1206b0ac90110f1a6f58e101aa496e99H Hartley Sweeten 6198b6c56949ffa83dbc2a6e8fa3f98b10a19372207H Hartley Sweeten ret = comedi_alloc_subdevices(dev, n_subdevs); 6208b6c56949ffa83dbc2a6e8fa3f98b10a19372207H Hartley Sweeten if (ret) 6218b6c56949ffa83dbc2a6e8fa3f98b10a19372207H Hartley Sweeten return ret; 6226b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 6236b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten for (sdev_no = 0; sdev_no < (int)dev->n_subdevices; ++sdev_no) { 62468720ae68a94444387d56bc5a166396e33e420a5H Hartley Sweeten s = &dev->subdevices[sdev_no]; 6258099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten subpriv = &devpriv->sprivs[sdev_no]; 6268099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten s->private = subpriv; 6276b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->maxdata = 1; 6286b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->range_table = &range_digital; 6296b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->subdev_flags = SDF_READABLE | SDF_WRITABLE; 6306b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->type = COMEDI_SUBD_DIO; 6316b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->insn_bits = pcmuio_dio_insn_bits; 6326b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->insn_config = pcmuio_dio_insn_config; 633c87e1f26054388b661298a61e906a03fa2cd193eH Hartley Sweeten s->n_chan = 24; 6346b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 63504426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten /* subdevices 0 and 2 can suppport interrupts */ 63604426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if ((sdev_no == 0 && dev->irq) || 63704426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten (sdev_no == 2 && devpriv->irq2)) { 6381699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten /* setup the interrupt subdevice */ 6391699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten subpriv->intr.asic = sdev_no / 2; 6401699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten dev->read_subdev = s; 6411699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->subdev_flags |= SDF_CMD_READ; 6421699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->cancel = pcmuio_cancel; 6431699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->do_cmd = pcmuio_cmd; 6441699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->do_cmdtest = pcmuio_cmdtest; 6451699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->len_chanlist = s->n_chan; 6461699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten } else { 6471699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten subpriv->intr.asic = -1; 6481699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->len_chanlist = 1; 6496b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten } 6506b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten spin_lock_init(&subpriv->intr.spinlock); 6516b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten } 6526b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 653ee81b210fe9f761a3d34f6c061c67e6313df06bcH Hartley Sweeten return 0; 6546b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten} 6556b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 656484ecc95d9cdfa8b2f7029e2f3409cf078aed4abH Hartley Sweetenstatic void pcmuio_detach(struct comedi_device *dev) 6576b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten{ 6589a1a6cf8ae5ca58171e117335b9983e3cfa2185cH Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 6596b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 6602fd2bdfccae61efe18f6b92b6a45fbf936d75b48Ian Abbott if (devpriv) { 66104426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten pcmuio_reset(dev); 66204426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten 66304426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten /* free the 2nd irq if used, the core will free the 1st one */ 66404426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten if (devpriv->irq2 && devpriv->irq2 != dev->irq) 66504426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten free_irq(devpriv->irq2, dev); 66604426acfb86ad10968340771bb15f6074e12912fH Hartley Sweeten 6676b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten kfree(devpriv->sprivs); 6682fd2bdfccae61efe18f6b92b6a45fbf936d75b48Ian Abbott } 669a32c6d0084992d3e58a93120c9ce9527e80c651eH Hartley Sweeten comedi_legacy_detach(dev); 6706b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten} 6716b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 672294f930d98be86fb4f34302c718a49719650857fH Hartley Sweetenstatic struct comedi_driver pcmuio_driver = { 6736b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .driver_name = "pcmuio", 6746b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .module = THIS_MODULE, 6756b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .attach = pcmuio_attach, 6766b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .detach = pcmuio_detach, 6776b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .board_name = &pcmuio_boards[0].name, 6786b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .offset = sizeof(struct pcmuio_board), 6796b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .num_names = ARRAY_SIZE(pcmuio_boards), 6806b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten}; 681294f930d98be86fb4f34302c718a49719650857fH Hartley Sweetenmodule_comedi_driver(pcmuio_driver); 68290f703d30dd3e0c16ff80f35e34e511385a05ad5Arun Thomas 68390f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_AUTHOR("Comedi http://www.comedi.org"); 68490f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_DESCRIPTION("Comedi low-level driver"); 68590f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_LICENSE("GPL"); 686