pcmuio.c revision b07839c09b5235caae99ba2f8c24968a9115707c
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 7625436dc9d84f1be60ff549c9ab712bba2835f284Greg Kroah-Hartman#include <linux/interrupt.h> 775a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 786baef150380d561a4d695a6be4fc509821c23611Calin Culianu 79f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten#include "../comedidev.h" 8033782dd5edf8db3cdb7c81a3523bf743dd0209b7H Hartley Sweeten 81f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten#include "comedi_fc.h" 826baef150380d561a4d695a6be4fc509821c23611Calin Culianu 83f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten/* 84f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * Register I/O map 85f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 86f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * Offset Page 0 Page 1 Page 2 Page 3 87f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * ------ ----------- ----------- ----------- ----------- 88f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x00 Port 0 I/O Port 0 I/O Port 0 I/O Port 0 I/O 89f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x01 Port 1 I/O Port 1 I/O Port 1 I/O Port 1 I/O 90f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x02 Port 2 I/O Port 2 I/O Port 2 I/O Port 2 I/O 91f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x03 Port 3 I/O Port 3 I/O Port 3 I/O Port 3 I/O 92f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x04 Port 4 I/O Port 4 I/O Port 4 I/O Port 4 I/O 93f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x05 Port 5 I/O Port 5 I/O Port 5 I/O Port 5 I/O 94f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x06 INT_PENDING INT_PENDING INT_PENDING INT_PENDING 95f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x07 Page/Lock Page/Lock Page/Lock Page/Lock 96f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x08 N/A POL_0 ENAB_0 INT_ID0 97f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x09 N/A POL_1 ENAB_1 INT_ID1 98f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten * 0x0a N/A POL_2 ENAB_2 INT_ID2 99f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten */ 100f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_PORT_REG(x) (0x00 + (x)) 101f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_INT_PENDING_REG 0x06 102f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_PAGE_LOCK_REG 0x07 103f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_LOCK_PORT(x) ((1 << (x)) & 0x3f) 104f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_PAGE(x) (((x) & 0x3) << 6) 105f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_PAGE_MASK PCMUIO_PAGE(3) 106f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_PAGE_POL 1 107f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_PAGE_ENAB 2 108f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_PAGE_INT_ID 3 109f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten#define PCMUIO_PAGE_REG(x) (0x08 + (x)) 110f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten 111b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten#define PCMUIO_ASIC_IOSIZE 0x10 112b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten#define PCMUIO_MAX_ASICS 2 1136baef150380d561a4d695a6be4fc509821c23611Calin Culianu 11470a6001aeffeaa12f2a1c21470e8f3bdfb6ef8e7Bill Pembertonstruct pcmuio_board { 1156baef150380d561a4d695a6be4fc509821c23611Calin Culianu const char *name; 1166baef150380d561a4d695a6be4fc509821c23611Calin Culianu const int num_asics; 11770a6001aeffeaa12f2a1c21470e8f3bdfb6ef8e7Bill Pemberton}; 1186baef150380d561a4d695a6be4fc509821c23611Calin Culianu 119fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweetenstatic const struct pcmuio_board pcmuio_boards[] = { 120fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweeten { 121fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweeten .name = "pcmuio48", 122fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweeten .num_asics = 1, 123fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweeten }, { 124fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweeten .name = "pcmuio96", 125fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweeten .num_asics = 2, 126fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweeten }, 127fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweeten}; 128fbe3bb17b9f9e18b771c30449916807c4c25e308H Hartley Sweeten 129e15849e54405152087cd343437747db8d931fcd7Bill Pembertonstruct pcmuio_subdev_private { 1306baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* The below is only used for intr subdevices */ 1316baef150380d561a4d695a6be4fc509821c23611Calin Culianu struct { 132365c473e1da54e209aa8c01da2084c896f18fb20H Hartley Sweeten /* if non-negative, this subdev has an interrupt asic */ 133365c473e1da54e209aa8c01da2084c896f18fb20H Hartley Sweeten int asic; 134365c473e1da54e209aa8c01da2084c896f18fb20H Hartley Sweeten /* 135365c473e1da54e209aa8c01da2084c896f18fb20H Hartley Sweeten * subdev-relative channel mask for channels 136365c473e1da54e209aa8c01da2084c896f18fb20H Hartley Sweeten * we are interested in 137365c473e1da54e209aa8c01da2084c896f18fb20H Hartley Sweeten */ 138365c473e1da54e209aa8c01da2084c896f18fb20H Hartley Sweeten int enabled_mask; 1396baef150380d561a4d695a6be4fc509821c23611Calin Culianu int active; 1406baef150380d561a4d695a6be4fc509821c23611Calin Culianu int stop_count; 1416baef150380d561a4d695a6be4fc509821c23611Calin Culianu int continuous; 1426baef150380d561a4d695a6be4fc509821c23611Calin Culianu spinlock_t spinlock; 1436baef150380d561a4d695a6be4fc509821c23611Calin Culianu } intr; 144e15849e54405152087cd343437747db8d931fcd7Bill Pemberton}; 1456baef150380d561a4d695a6be4fc509821c23611Calin Culianu 146055f6636d9eb27bc13236e07739e019496c21221Bill Pembertonstruct pcmuio_private { 1476baef150380d561a4d695a6be4fc509821c23611Calin Culianu struct { 1486baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned int irq; 1496baef150380d561a4d695a6be4fc509821c23611Calin Culianu spinlock_t spinlock; 150b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten } asics[PCMUIO_MAX_ASICS]; 151e15849e54405152087cd343437747db8d931fcd7Bill Pemberton struct pcmuio_subdev_private *sprivs; 152055f6636d9eb27bc13236e07739e019496c21221Bill Pemberton}; 1536baef150380d561a4d695a6be4fc509821c23611Calin Culianu 154e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweetenstatic void pcmuio_write(struct comedi_device *dev, unsigned int val, 155e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten int asic, int page, int port) 156e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten{ 157b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten unsigned long iobase = dev->iobase + (asic * PCMUIO_ASIC_IOSIZE); 158e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten 159e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten if (page == 0) { 160e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten /* Port registers are valid for any page */ 161e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb(val & 0xff, iobase + PCMUIO_PORT_REG(port + 0)); 162e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb((val >> 8) & 0xff, iobase + PCMUIO_PORT_REG(port + 1)); 163e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb((val >> 16) & 0xff, iobase + PCMUIO_PORT_REG(port + 2)); 164e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten } else { 165e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb(PCMUIO_PAGE(page), iobase + PCMUIO_PAGE_LOCK_REG); 166e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb(val & 0xff, iobase + PCMUIO_PAGE_REG(0)); 167e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb((val >> 8) & 0xff, iobase + PCMUIO_PAGE_REG(1)); 168e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten outb((val >> 16) & 0xff, iobase + PCMUIO_PAGE_REG(2)); 169e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten } 170e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten} 171e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten 17289aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweetenstatic unsigned int pcmuio_read(struct comedi_device *dev, 17389aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten int asic, int page, int port) 17489aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten{ 175b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten unsigned long iobase = dev->iobase + (asic * PCMUIO_ASIC_IOSIZE); 17689aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten unsigned int val; 17789aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten 17889aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten if (page == 0) { 17989aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten /* Port registers are valid for any page */ 18089aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val = inb(iobase + PCMUIO_PORT_REG(port + 0)); 18189aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val |= (inb(iobase + PCMUIO_PORT_REG(port + 1)) << 8); 18289aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val |= (inb(iobase + PCMUIO_PORT_REG(port + 2)) << 16); 18389aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten } else { 18489aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten outb(PCMUIO_PAGE(page), iobase + PCMUIO_PAGE_LOCK_REG); 18589aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val = inb(iobase + PCMUIO_PAGE_REG(0)); 18689aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val |= (inb(iobase + PCMUIO_PAGE_REG(1)) << 8); 18789aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten val |= (inb(iobase + PCMUIO_PAGE_REG(2)) << 16); 18889aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten } 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, 2050a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data) 2066baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 2071fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten unsigned int mask = data[0] & s->io_bits; /* outputs only */ 2081fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten unsigned int bits = data[1]; 209c4ad65e6ce8a9cfe78d4c4b06b915c17a27ba011H Hartley Sweeten int asic = s->index / 2; 210c4ad65e6ce8a9cfe78d4c4b06b915c17a27ba011H Hartley Sweeten int port = (s->index % 2) ? 3 : 0; 2111fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten unsigned int val; 2126baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2131fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten /* get inverted state of the channels from the port */ 2141fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten val = pcmuio_read(dev, asic, 0, port); 2156baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2161fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten /* get the true state of the channels */ 2171fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten s->state = val ^ ((0x1 << s->n_chan) - 1); 2186baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2191fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten if (mask) { 2201fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten s->state &= ~mask; 2211fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten s->state |= (mask & bits); 2226baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2231fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten /* invert the state and update the channels */ 2241fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten val = s->state ^ ((0x1 << s->n_chan) - 1); 2251fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten pcmuio_write(dev, val, asic, 0, port); 2266baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 2276baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2281fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten data[1] = s->state; 2296baef150380d561a4d695a6be4fc509821c23611Calin Culianu 230a2714e3e42e746d6c8525c35fdcc58fb60c2830dH Hartley Sweeten return insn->n; 2316baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 2326baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2330a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int pcmuio_dio_insn_config(struct comedi_device *dev, 2340a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 2350a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data) 2366baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 2371fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten unsigned int chan_mask = 1 << CR_CHAN(insn->chanspec); 238c4ad65e6ce8a9cfe78d4c4b06b915c17a27ba011H Hartley Sweeten int asic = s->index / 2; 239c4ad65e6ce8a9cfe78d4c4b06b915c17a27ba011H Hartley Sweeten int port = (s->index % 2) ? 3 : 0; 2406baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2416baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch (data[0]) { 2426baef150380d561a4d695a6be4fc509821c23611Calin Culianu case INSN_CONFIG_DIO_OUTPUT: 2431fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten s->io_bits |= chan_mask; 2446baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 2456baef150380d561a4d695a6be4fc509821c23611Calin Culianu case INSN_CONFIG_DIO_INPUT: 2461fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten s->io_bits &= ~chan_mask; 2471fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten pcmuio_write(dev, s->io_bits, asic, 0, port); 2486baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 2496baef150380d561a4d695a6be4fc509821c23611Calin Culianu case INSN_CONFIG_DIO_QUERY: 2501fdd0fc5fe28cd11ecf64e77892a1d9a1fd89fbfH Hartley Sweeten data[1] = (s->io_bits & chan_mask) ? COMEDI_OUTPUT : COMEDI_INPUT; 2516baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 2526baef150380d561a4d695a6be4fc509821c23611Calin Culianu default: 2536baef150380d561a4d695a6be4fc509821c23611Calin Culianu return -EINVAL; 2546baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 2556baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 2566baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2576baef150380d561a4d695a6be4fc509821c23611Calin Culianu return insn->n; 2586baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 2596baef150380d561a4d695a6be4fc509821c23611Calin Culianu 260da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic void init_asics(struct comedi_device *dev) 261e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten{ 262a28b59957d3ad01481c2ea87aca50cfdb85417f2H Hartley Sweeten const struct pcmuio_board *board = comedi_board(dev); 2636baef150380d561a4d695a6be4fc509821c23611Calin Culianu int asic; 2646baef150380d561a4d695a6be4fc509821c23611Calin Culianu 265a28b59957d3ad01481c2ea87aca50cfdb85417f2H Hartley Sweeten for (asic = 0; asic < board->num_asics; ++asic) { 2666baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* first, clear all the DIO port bits */ 267e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, 0, 0); 268e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, 0, 3); 2696baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2706baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Next, clear all the paged registers for each page */ 271e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_POL, 0); 272e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_ENAB, 0); 273e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_INT_ID, 0); 2746baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 2756baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 2766baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2776b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweetenstatic void pcmuio_stop_intr(struct comedi_device *dev, 2786b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten struct comedi_subdevice *s) 2796b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten{ 2808099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten struct pcmuio_subdev_private *subpriv = s->private; 281e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten int asic; 2826b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 2836b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten asic = subpriv->intr.asic; 2846b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten if (asic < 0) 2856b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten return; /* not an interrupt subdev */ 2866b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 2876b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten subpriv->intr.enabled_mask = 0; 2886b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten subpriv->intr.active = 0; 289920e2ffbe243fb0555b2c238e26fe7dbc03db98cH Hartley Sweeten s->async->inttrig = NULL; 290e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten 291e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten /* disable all intrs for this subdev.. */ 292e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_ENAB, 0); 2936b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten} 2946b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 2953b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweetenstatic void pcmuio_handle_intr_subdev(struct comedi_device *dev, 2963b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten struct comedi_subdevice *s, 2973b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned triggered) 2983b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten{ 2993b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten struct pcmuio_subdev_private *subpriv = s->private; 3003b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned int len = s->async->cmd.chanlist_len; 3013b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned oldevents = s->async->events; 3023b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned int val = 0; 3033b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned long flags; 3043b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned mytrig; 3053b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned int i; 3063b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3073b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten spin_lock_irqsave(&subpriv->intr.spinlock, flags); 3083b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3093b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (!subpriv->intr.active) 3103b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten goto done; 3113b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 31243d70ce9ac772647baf8aadef1aa0f071bfe7f36H Hartley Sweeten mytrig = triggered; 313dbe9c7929c6c0021414d61f85fe4e2f20f069e1cH Hartley Sweeten mytrig &= ((0x1 << s->n_chan) - 1); 3143b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3153b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (!(mytrig & subpriv->intr.enabled_mask)) 3163b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten goto done; 3173b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3183b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten for (i = 0; i < len; i++) { 3193b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned int chan = CR_CHAN(s->async->cmd.chanlist[i]); 3203b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (mytrig & (1U << chan)) 3213b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten val |= (1U << i); 3223b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3233b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3243b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* Write the scan to the buffer. */ 3253b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (comedi_buf_put(s->async, ((short *)&val)[0]) && 3263b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten comedi_buf_put(s->async, ((short *)&val)[1])) { 3273b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten s->async->events |= (COMEDI_CB_BLOCK | COMEDI_CB_EOS); 3283b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } else { 3293b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* Overflow! Stop acquisition!! */ 3303b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* TODO: STOP_ACQUISITION_CALL_HERE!! */ 3313b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten pcmuio_stop_intr(dev, s); 3323b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3333b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3343b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* Check for end of acquisition. */ 3353b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (!subpriv->intr.continuous) { 3363b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* stop_src == TRIG_COUNT */ 3373b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (subpriv->intr.stop_count > 0) { 3383b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten subpriv->intr.stop_count--; 3393b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (subpriv->intr.stop_count == 0) { 3403b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten s->async->events |= COMEDI_CB_EOA; 3413b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* TODO: STOP_ACQUISITION_CALL_HERE!! */ 3423b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten pcmuio_stop_intr(dev, s); 3433b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3443b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3453b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3463b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3473b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweetendone: 3483b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten spin_unlock_irqrestore(&subpriv->intr.spinlock, flags); 3493b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3503b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (oldevents != s->async->events) 3513b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten comedi_event(dev, s); 3523b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten} 3533b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3543b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweetenstatic int pcmuio_handle_asic_interrupt(struct comedi_device *dev, int asic) 3556baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 3569a1a6cf8ae5ca58171e117335b9983e3cfa2185cH Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 3578099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten struct pcmuio_subdev_private *subpriv; 358b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten unsigned long iobase = dev->iobase + (asic * PCMUIO_ASIC_IOSIZE); 35989aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten unsigned int triggered = 0; 3603b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten int got1 = 0; 3613b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned long flags; 3623b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten unsigned char int_pend; 36368720ae68a94444387d56bc5a166396e33e420a5H Hartley Sweeten int i; 3646baef150380d561a4d695a6be4fc509821c23611Calin Culianu 3653b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten spin_lock_irqsave(&devpriv->asics[asic].spinlock, flags); 3663b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 367f45a1f26eae4cadbfeb65b4b36bfa3583f694066H Hartley Sweeten int_pend = inb(iobase + PCMUIO_INT_PENDING_REG) & 0x07; 3683b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (int_pend) { 36989aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten triggered = pcmuio_read(dev, asic, PCMUIO_PAGE_INT_ID, 0); 37089aaa92adffa5c57d9c2a545c7cb9809ddd3b615H Hartley Sweeten pcmuio_write(dev, 0, asic, PCMUIO_PAGE_INT_ID, 0); 3716baef150380d561a4d695a6be4fc509821c23611Calin Culianu 3723b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten ++got1; 3733b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3743b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3753b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten spin_unlock_irqrestore(&devpriv->asics[asic].spinlock, flags); 3763b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3773b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (triggered) { 3783b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten struct comedi_subdevice *s; 3793b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* TODO here: dispatch io lines to subdevs with commands.. */ 3803b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten for (i = 0; i < dev->n_subdevices; i++) { 3813b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten s = &dev->subdevices[i]; 3823b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten subpriv = s->private; 3833b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (subpriv->intr.asic == asic) { 3843b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* 3853b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten * This is an interrupt subdev, and it 3863b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten * matches this asic! 3873b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten */ 3883b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten pcmuio_handle_intr_subdev(dev, s, 3893b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten triggered); 3906baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 3913b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3923b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten } 3933b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten return got1; 3943b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten} 3953b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten 3963b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweetenstatic irqreturn_t interrupt_pcmuio(int irq, void *d) 3973b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten{ 3983b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten struct comedi_device *dev = d; 3993b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 4003b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten int got1 = 0; 4013b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten int asic; 4026baef150380d561a4d695a6be4fc509821c23611Calin Culianu 403b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten for (asic = 0; asic < PCMUIO_MAX_ASICS; ++asic) { 4043b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (irq == devpriv->asics[asic].irq) { 4053b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten /* it is an interrupt for ASIC #asic */ 4063b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten if (pcmuio_handle_asic_interrupt(dev, asic)) 4073b48c535802eb515069b4f2ff26f0601eabf51b8H Hartley Sweeten got1++; 4086baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4096baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4106baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (!got1) 4116baef150380d561a4d695a6be4fc509821c23611Calin Culianu return IRQ_NONE; /* interrupt from other source */ 4126baef150380d561a4d695a6be4fc509821c23611Calin Culianu return IRQ_HANDLED; 4136baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 4146baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4150a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int pcmuio_start_intr(struct comedi_device *dev, 4160a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s) 4176baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 4188099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten struct pcmuio_subdev_private *subpriv = s->private; 4199a1a6cf8ae5ca58171e117335b9983e3cfa2185cH Hartley Sweeten 4206baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (!subpriv->intr.continuous && subpriv->intr.stop_count == 0) { 4216baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* An empty acquisition! */ 4226baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->async->events |= COMEDI_CB_EOA; 4236baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.active = 0; 4246baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 1; 4256baef150380d561a4d695a6be4fc509821c23611Calin Culianu } else { 4266baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned bits = 0, pol_bits = 0, n; 427e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten int asic; 428ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd *cmd = &s->async->cmd; 4296baef150380d561a4d695a6be4fc509821c23611Calin Culianu 430c3744138715045adb316284ee7a1e608f0278f6cBill Pemberton asic = subpriv->intr.asic; 431c3744138715045adb316284ee7a1e608f0278f6cBill Pemberton if (asic < 0) 4326baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 1; /* not an interrupt 4336baef150380d561a4d695a6be4fc509821c23611Calin Culianu subdev */ 4346baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.enabled_mask = 0; 4356baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.active = 1; 4366baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (cmd->chanlist) { 4376baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (n = 0; n < cmd->chanlist_len; n++) { 4386baef150380d561a4d695a6be4fc509821c23611Calin Culianu bits |= (1U << CR_CHAN(cmd->chanlist[n])); 4396baef150380d561a4d695a6be4fc509821c23611Calin Culianu pol_bits |= (CR_AREF(cmd->chanlist[n]) 4400a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral || CR_RANGE(cmd-> 4410a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral chanlist[n]) ? 1U : 0U) 4420a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral << CR_CHAN(cmd->chanlist[n]); 4436baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4446baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 445dbe9c7929c6c0021414d61f85fe4e2f20f069e1cH Hartley Sweeten bits &= ((0x1 << s->n_chan) - 1); 4466baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.enabled_mask = bits; 4476baef150380d561a4d695a6be4fc509821c23611Calin Culianu 448e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten /* set pol and enab intrs for this subdev.. */ 449e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, pol_bits, asic, PCMUIO_PAGE_POL, 0); 450e4eae7c031e3eceed6dbc6358c15d55604fb31cdH Hartley Sweeten pcmuio_write(dev, bits, asic, PCMUIO_PAGE_ENAB, 0); 4516baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4526baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 0; 4536baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 4546baef150380d561a4d695a6be4fc509821c23611Calin Culianu 455da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int pcmuio_cancel(struct comedi_device *dev, struct comedi_subdevice *s) 4566baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 4578099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten struct pcmuio_subdev_private *subpriv = s->private; 4586baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long flags; 4596baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4605f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_lock_irqsave(&subpriv->intr.spinlock, flags); 4616baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (subpriv->intr.active) 4626baef150380d561a4d695a6be4fc509821c23611Calin Culianu pcmuio_stop_intr(dev, s); 4635f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_unlock_irqrestore(&subpriv->intr.spinlock, flags); 4646baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4656baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 0; 4666baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 4676baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4686baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 4696baef150380d561a4d695a6be4fc509821c23611Calin Culianu * Internal trigger function to start acquisition for an 'INTERRUPT' subdevice. 4706baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 4716baef150380d561a4d695a6be4fc509821c23611Calin Culianustatic int 472da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonpcmuio_inttrig_start_intr(struct comedi_device *dev, struct comedi_subdevice *s, 4730a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral unsigned int trignum) 4746baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 4758099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten struct pcmuio_subdev_private *subpriv = s->private; 4766baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long flags; 4776baef150380d561a4d695a6be4fc509821c23611Calin Culianu int event = 0; 4786baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4796baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (trignum != 0) 4806baef150380d561a4d695a6be4fc509821c23611Calin Culianu return -EINVAL; 4816baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4825f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_lock_irqsave(&subpriv->intr.spinlock, flags); 483920e2ffbe243fb0555b2c238e26fe7dbc03db98cH Hartley Sweeten s->async->inttrig = NULL; 4840389245f0c5692111c0dc8d997fc4af72d789472Ravishankar karkala Mallikarjunayya if (subpriv->intr.active) 4856baef150380d561a4d695a6be4fc509821c23611Calin Culianu event = pcmuio_start_intr(dev, s); 4860389245f0c5692111c0dc8d997fc4af72d789472Ravishankar karkala Mallikarjunayya 4875f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_unlock_irqrestore(&subpriv->intr.spinlock, flags); 4886baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4890389245f0c5692111c0dc8d997fc4af72d789472Ravishankar karkala Mallikarjunayya if (event) 4906baef150380d561a4d695a6be4fc509821c23611Calin Culianu comedi_event(dev, s); 4916baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4926baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 1; 4936baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 4946baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4956baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 4966baef150380d561a4d695a6be4fc509821c23611Calin Culianu * 'do_cmd' function for an 'INTERRUPT' subdevice. 4976baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 498da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int pcmuio_cmd(struct comedi_device *dev, struct comedi_subdevice *s) 4996baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 5008099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten struct pcmuio_subdev_private *subpriv = s->private; 501ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd *cmd = &s->async->cmd; 5026baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long flags; 5036baef150380d561a4d695a6be4fc509821c23611Calin Culianu int event = 0; 5046baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5055f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_lock_irqsave(&subpriv->intr.spinlock, flags); 5066baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.active = 1; 5076baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5086baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Set up end of acquisition. */ 5096baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch (cmd->stop_src) { 5106baef150380d561a4d695a6be4fc509821c23611Calin Culianu case TRIG_COUNT: 5116baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.continuous = 0; 5126baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.stop_count = cmd->stop_arg; 5136baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 5146baef150380d561a4d695a6be4fc509821c23611Calin Culianu default: 5156baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* TRIG_NONE */ 5166baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.continuous = 1; 5176baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.stop_count = 0; 5186baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 5196baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 5206baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5216baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Set up start of acquisition. */ 5226baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch (cmd->start_src) { 5236baef150380d561a4d695a6be4fc509821c23611Calin Culianu case TRIG_INT: 5246baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->async->inttrig = pcmuio_inttrig_start_intr; 5256baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 5266baef150380d561a4d695a6be4fc509821c23611Calin Culianu default: 5276baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* TRIG_NOW */ 5286baef150380d561a4d695a6be4fc509821c23611Calin Culianu event = pcmuio_start_intr(dev, s); 5296baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 5306baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 5315f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_unlock_irqrestore(&subpriv->intr.spinlock, flags); 5326baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5330389245f0c5692111c0dc8d997fc4af72d789472Ravishankar karkala Mallikarjunayya if (event) 5346baef150380d561a4d695a6be4fc509821c23611Calin Culianu comedi_event(dev, s); 5356baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5366baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 0; 5376baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 5386baef150380d561a4d695a6be4fc509821c23611Calin Culianu 539f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweetenstatic int pcmuio_cmdtest(struct comedi_device *dev, 540f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten struct comedi_subdevice *s, 541f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten struct comedi_cmd *cmd) 5426baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 543f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten int err = 0; 544f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 545f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* Step 1 : check if triggers are trivially valid */ 546f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 547f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW | TRIG_INT); 548f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->scan_begin_src, TRIG_EXT); 549f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_NOW); 550f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT); 551f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE); 552f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 553f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten if (err) 554f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten return 1; 555f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 556f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* Step 2a : make sure trigger sources are unique */ 557f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 558f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_is_unique(cmd->start_src); 559f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_is_unique(cmd->stop_src); 560f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 561f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* Step 2b : and mutually compatible */ 562f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 563f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten if (err) 564f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten return 2; 565f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 566f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* Step 3: check if arguments are trivially valid */ 567f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 568f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0); 569f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0); 570f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0); 571f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len); 572f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 573f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten switch (cmd->stop_src) { 574f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten case TRIG_COUNT: 575f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* any count allowed */ 576f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten break; 577f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten case TRIG_NONE: 578f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0); 579f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten break; 580f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten default: 581f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten break; 582f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten } 583f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 584f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten if (err) 585f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten return 3; 586f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 587f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* step 4: fix up any arguments */ 588f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 589f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten /* if (err) return 4; */ 590f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten 591f95d45d114e1fd024bdee67beb80fce9b9c96126H Hartley Sweeten return 0; 5926baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 5936baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5946b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweetenstatic int pcmuio_attach(struct comedi_device *dev, struct comedi_devconfig *it) 5956b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten{ 596a28b59957d3ad01481c2ea87aca50cfdb85417f2H Hartley Sweeten const struct pcmuio_board *board = comedi_board(dev); 5976b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten struct comedi_subdevice *s; 5988099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten struct pcmuio_private *devpriv; 5998099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten struct pcmuio_subdev_private *subpriv; 6001699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten int sdev_no, n_subdevs, asic; 601b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten unsigned int irq[PCMUIO_MAX_ASICS]; 6028b6c56949ffa83dbc2a6e8fa3f98b10a19372207H Hartley Sweeten int ret; 6036b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 6046b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten irq[0] = it->options[1]; 6056b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten irq[1] = it->options[2]; 6066b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 60735626c2efecd6dad6ef67124ae2604385b717ed7H Hartley Sweeten ret = comedi_request_region(dev, it->options[0], 608b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten board->num_asics * PCMUIO_ASIC_IOSIZE); 60935626c2efecd6dad6ef67124ae2604385b717ed7H Hartley Sweeten if (ret) 61035626c2efecd6dad6ef67124ae2604385b717ed7H Hartley Sweeten return ret; 6116b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 612c34fa261b0ac3a862ccd3f71ee55a16b920dfc83H Hartley Sweeten devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL); 613c34fa261b0ac3a862ccd3f71ee55a16b920dfc83H Hartley Sweeten if (!devpriv) 614c34fa261b0ac3a862ccd3f71ee55a16b920dfc83H Hartley Sweeten return -ENOMEM; 615c34fa261b0ac3a862ccd3f71ee55a16b920dfc83H Hartley Sweeten dev->private = devpriv; 6166b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 617b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten for (asic = 0; asic < PCMUIO_MAX_ASICS; ++asic) 6186b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten spin_lock_init(&devpriv->asics[asic].spinlock); 6196b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 620c87e1f26054388b661298a61e906a03fa2cd193eH Hartley Sweeten n_subdevs = board->num_asics * 2; 62178110bb8dc4a7ff331bfa3cfe7d4e287cfb3f22bJoe Perches devpriv->sprivs = kcalloc(n_subdevs, 62278110bb8dc4a7ff331bfa3cfe7d4e287cfb3f22bJoe Perches sizeof(struct pcmuio_subdev_private), 62378110bb8dc4a7ff331bfa3cfe7d4e287cfb3f22bJoe Perches GFP_KERNEL); 62478110bb8dc4a7ff331bfa3cfe7d4e287cfb3f22bJoe Perches if (!devpriv->sprivs) 6256b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten return -ENOMEM; 626eea6838b1206b0ac90110f1a6f58e101aa496e99H Hartley Sweeten 6278b6c56949ffa83dbc2a6e8fa3f98b10a19372207H Hartley Sweeten ret = comedi_alloc_subdevices(dev, n_subdevs); 6288b6c56949ffa83dbc2a6e8fa3f98b10a19372207H Hartley Sweeten if (ret) 6298b6c56949ffa83dbc2a6e8fa3f98b10a19372207H Hartley Sweeten return ret; 6306b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 6316b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten for (sdev_no = 0; sdev_no < (int)dev->n_subdevices; ++sdev_no) { 63268720ae68a94444387d56bc5a166396e33e420a5H Hartley Sweeten s = &dev->subdevices[sdev_no]; 6338099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten subpriv = &devpriv->sprivs[sdev_no]; 6348099a9841f1d9ff15de8f12cf1ba36b574d804c8H Hartley Sweeten s->private = subpriv; 6356b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->maxdata = 1; 6366b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->range_table = &range_digital; 6376b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->subdev_flags = SDF_READABLE | SDF_WRITABLE; 6386b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->type = COMEDI_SUBD_DIO; 6396b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->insn_bits = pcmuio_dio_insn_bits; 6406b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten s->insn_config = pcmuio_dio_insn_config; 641c87e1f26054388b661298a61e906a03fa2cd193eH Hartley Sweeten s->n_chan = 24; 6426b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 6431699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten /* subdevices 0 and 2 suppport interrupts */ 6441699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten if ((sdev_no % 2) == 0) { 6451699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten /* setup the interrupt subdevice */ 6461699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten subpriv->intr.asic = sdev_no / 2; 6471699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten dev->read_subdev = s; 6481699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->subdev_flags |= SDF_CMD_READ; 6491699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->cancel = pcmuio_cancel; 6501699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->do_cmd = pcmuio_cmd; 6511699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->do_cmdtest = pcmuio_cmdtest; 6521699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->len_chanlist = s->n_chan; 6531699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten } else { 6541699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten subpriv->intr.asic = -1; 6551699d80aef8ba7992d5f4176aed3504db8cffaf9H Hartley Sweeten s->len_chanlist = 1; 6566b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten } 6576b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten spin_lock_init(&subpriv->intr.spinlock); 6586b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten } 6596b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 6606b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten init_asics(dev); /* clear out all the registers, basically */ 6616b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 662b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten for (asic = 0; irq[0] && asic < PCMUIO_MAX_ASICS; ++asic) { 6636b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten if (irq[asic] 6646b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten && request_irq(irq[asic], interrupt_pcmuio, 665a28b59957d3ad01481c2ea87aca50cfdb85417f2H Hartley Sweeten IRQF_SHARED, board->name, dev)) { 6666b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten int i; 6676b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten /* unroll the allocated irqs.. */ 6686b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten for (i = asic - 1; i >= 0; --i) { 6696b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten free_irq(irq[i], dev); 6706b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten devpriv->asics[i].irq = irq[i] = 0; 6716b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten } 6726b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten irq[asic] = 0; 6736b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten } 6746b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten devpriv->asics[asic].irq = irq[asic]; 6756b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten } 6766b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 6776b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten if (irq[0]) { 678f41ad6675f2d5705a0fc1e210af8eb4a27dbacb4Ian Abbott dev_dbg(dev->class_dev, "irq: %u\n", irq[0]); 679a28b59957d3ad01481c2ea87aca50cfdb85417f2H Hartley Sweeten if (irq[1] && board->num_asics == 2) 680f41ad6675f2d5705a0fc1e210af8eb4a27dbacb4Ian Abbott dev_dbg(dev->class_dev, "second ASIC irq: %u\n", 681f41ad6675f2d5705a0fc1e210af8eb4a27dbacb4Ian Abbott irq[1]); 6826b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten } else { 683f41ad6675f2d5705a0fc1e210af8eb4a27dbacb4Ian Abbott dev_dbg(dev->class_dev, "(IRQ mode disabled)\n"); 6846b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten } 6856b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 6866b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 6876b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten return 1; 6886b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten} 6896b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 690484ecc95d9cdfa8b2f7029e2f3409cf078aed4abH Hartley Sweetenstatic void pcmuio_detach(struct comedi_device *dev) 6916b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten{ 6929a1a6cf8ae5ca58171e117335b9983e3cfa2185cH Hartley Sweeten struct pcmuio_private *devpriv = dev->private; 6936b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten int i; 6946b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 695b07839c09b5235caae99ba2f8c24968a9115707cH Hartley Sweeten for (i = 0; i < PCMUIO_MAX_ASICS; ++i) { 6966b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten if (devpriv->asics[i].irq) 6976b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten free_irq(devpriv->asics[i].irq, dev); 6986b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten } 6996b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten if (devpriv && devpriv->sprivs) 7006b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten kfree(devpriv->sprivs); 701a32c6d0084992d3e58a93120c9ce9527e80c651eH Hartley Sweeten comedi_legacy_detach(dev); 7026b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten} 7036b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten 704294f930d98be86fb4f34302c718a49719650857fH Hartley Sweetenstatic struct comedi_driver pcmuio_driver = { 7056b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .driver_name = "pcmuio", 7066b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .module = THIS_MODULE, 7076b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .attach = pcmuio_attach, 7086b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .detach = pcmuio_detach, 7096b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .board_name = &pcmuio_boards[0].name, 7106b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .offset = sizeof(struct pcmuio_board), 7116b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten .num_names = ARRAY_SIZE(pcmuio_boards), 7126b19f9c6bee7afcd1e5dee9528333b2aa52de404H Hartley Sweeten}; 713294f930d98be86fb4f34302c718a49719650857fH Hartley Sweetenmodule_comedi_driver(pcmuio_driver); 71490f703d30dd3e0c16ff80f35e34e511385a05ad5Arun Thomas 71590f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_AUTHOR("Comedi http://www.comedi.org"); 71690f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_DESCRIPTION("Comedi low-level driver"); 71790f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_LICENSE("GPL"); 718