das1800.c revision 1e3a2875684bcc4af1e2f6597fdd502cc59e3593
1a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* 2a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess comedi/drivers/das1800.c 3a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess Driver for Keitley das1700/das1800 series boards 4a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess Copyright (C) 2000 Frank Mori Hess <fmhess@users.sourceforge.net> 5a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 6a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess COMEDI - Linux Control and Measurement Device Interface 7a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess Copyright (C) 2000 David A. Schleef <ds@schleef.org> 8a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 9a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess This program is free software; you can redistribute it and/or modify 10a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess it under the terms of the GNU General Public License as published by 11a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess the Free Software Foundation; either version 2 of the License, or 12a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess (at your option) any later version. 13a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 14a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess This program is distributed in the hope that it will be useful, 15a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess but WITHOUT ANY WARRANTY; without even the implied warranty of 16a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess GNU General Public License for more details. 18a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 19a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess You should have received a copy of the GNU General Public License 20a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess along with this program; if not, write to the Free Software 21a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 22a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 23a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess************************************************************************ 24a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess*/ 25a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* 26a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori HessDriver: das1800 27a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori HessDescription: Keithley Metrabyte DAS1800 (& compatibles) 28a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori HessAuthor: Frank Mori Hess <fmhess@users.sourceforge.net> 29a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori HessDevices: [Keithley Metrabyte] DAS-1701ST (das-1701st), 30a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess DAS-1701ST-DA (das-1701st-da), DAS-1701/AO (das-1701ao), 31a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess DAS-1702ST (das-1702st), DAS-1702ST-DA (das-1702st-da), 32a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess DAS-1702HR (das-1702hr), DAS-1702HR-DA (das-1702hr-da), 33a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess DAS-1702/AO (das-1702ao), DAS-1801ST (das-1801st), 34a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess DAS-1801ST-DA (das-1801st-da), DAS-1801HC (das-1801hc), 35a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess DAS-1801AO (das-1801ao), DAS-1802ST (das-1802st), 36a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess DAS-1802ST-DA (das-1802st-da), DAS-1802HR (das-1802hr), 37a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess DAS-1802HR-DA (das-1802hr-da), DAS-1802HC (das-1802hc), 38a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess DAS-1802AO (das-1802ao) 39a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori HessStatus: works 40a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 41a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori HessThe waveform analog output on the 'ao' cards is not supported. 42a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori HessIf you need it, send me (Frank Hess) an email. 43a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 44a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori HessConfiguration options: 45a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess [0] - I/O port base address 46a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess [1] - IRQ (optional, required for timed or externally triggered conversions) 47a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess [2] - DMA0 (optional, requires irq) 48a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess [3] - DMA1 (optional, requires irq and dma0) 49a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess*/ 50a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* 51a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 52a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori HessThis driver supports the following Keithley boards: 53a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 54a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessdas-1701st 55a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessdas-1701st-da 56a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessdas-1701ao 57a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessdas-1702st 58a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessdas-1702st-da 59a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessdas-1702hr 60a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessdas-1702hr-da 61a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessdas-1702ao 62a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessdas-1801st 63a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessdas-1801st-da 64a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessdas-1801hc 65a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessdas-1801ao 66a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessdas-1802st 67a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessdas-1802st-da 68a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessdas-1802hr 69a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessdas-1802hr-da 70a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessdas-1802hc 71a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessdas-1802ao 72a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 73a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori HessOptions: 74a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess [0] - base io address 75a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess [1] - irq (optional, required for timed or externally triggered conversions) 76a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess [2] - dma0 (optional, requires irq) 77a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess [3] - dma1 (optional, requires irq and dma0) 78a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 79a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessirq can be omitted, although the cmd interface will not work without it. 80a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 81a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessanalog input cmd triggers supported: 82a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess start_src: TRIG_NOW | TRIG_EXT 83a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess scan_begin_src: TRIG_FOLLOW | TRIG_TIMER | TRIG_EXT 84a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess scan_end_src: TRIG_COUNT 85a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess convert_src: TRIG_TIMER | TRIG_EXT (TRIG_EXT requires scan_begin_src == TRIG_FOLLOW) 86a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess stop_src: TRIG_COUNT | TRIG_EXT | TRIG_NONE 87a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 88a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessscan_begin_src triggers TRIG_TIMER and TRIG_EXT use the card's 89a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess'burst mode' which limits the valid conversion time to 64 microseconds 90a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess(convert_arg <= 64000). This limitation does not apply if scan_begin_src 91a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessis TRIG_FOLLOW. 92a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 93a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori HessNOTES: 94a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori HessOnly the DAS-1801ST has been tested by me. 95a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori HessUnipolar and bipolar ranges cannot be mixed in the channel/gain list. 96a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 97a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori HessTODO: 98a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess Make it automatically allocate irq and dma channels if they are not specified 99a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess Add support for analog out on 'ao' cards 100a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess read insn for analog out 101a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess*/ 102a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 10325436dc9d84f1be60ff549c9ab712bba2835f284Greg Kroah-Hartman#include <linux/interrupt.h> 1045a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 105845d131e2b363717d8ac8db2c6b4417de8cf10b5Greg Kroah-Hartman#include <linux/io.h> 106a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#include "../comedidev.h" 107a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 108a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#include <linux/ioport.h> 109a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#include <asm/dma.h> 110a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 111a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#include "8253.h" 112a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#include "comedi_fc.h" 113a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 114a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* misc. defines */ 115a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton#define DAS1800_SIZE 16 /* uses 16 io addresses */ 116a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton#define FIFO_SIZE 1024 /* 1024 sample fifo */ 117a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton#define TIMER_BASE 200 /* 5 Mhz master clock */ 118a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton#define UNIPOLAR 0x4 /* bit that determines whether input range is uni/bipolar */ 119a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton#define DMA_BUF_SIZE 0x1ff00 /* size in bytes of dma buffers */ 120a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 121a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* Registers for the das1800 */ 122a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_FIFO 0x0 123a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_QRAM 0x0 124a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_DAC 0x0 125a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_SELECT 0x2 126a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define ADC 0x0 127a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define QRAM 0x1 128a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAC(a) (0x2 + a) 129a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_DIGITAL 0x3 130a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_CONTROL_A 0x4 131a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define FFEN 0x1 132a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define CGEN 0x4 133a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define CGSL 0x8 134a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define TGEN 0x10 135a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define TGSL 0x20 136a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define ATEN 0x80 137a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_CONTROL_B 0x5 138a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DMA_CH5 0x1 139a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DMA_CH6 0x2 140a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DMA_CH7 0x3 141a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DMA_CH5_CH6 0x5 142a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DMA_CH6_CH7 0x6 143a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DMA_CH7_CH5 0x7 144a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton#define DMA_ENABLED 0x3 /* mask used to determine if dma is enabled */ 145a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DMA_DUAL 0x4 146a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define IRQ3 0x8 147a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define IRQ5 0x10 148a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define IRQ7 0x18 149a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define IRQ10 0x28 150a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define IRQ11 0x30 151a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define IRQ15 0x38 152a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define FIMD 0x40 153a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_CONTROL_C 0X6 154a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define IPCLK 0x1 155a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define XPCLK 0x3 156a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define BMDE 0x4 157a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define CMEN 0x8 158a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define UQEN 0x10 159a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define SD 0x40 160a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define UB 0x80 161a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_STATUS 0x7 162a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* bits that prevent interrupt status bits (and CVEN) from being cleared on write */ 163a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define CLEAR_INTR_MASK (CVEN_MASK | 0x1f) 164a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define INT 0x1 165a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DMATC 0x2 166a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define CT0TC 0x8 167a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define OVF 0x10 168a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define FHF 0x20 169a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define FNE 0x40 170a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton#define CVEN_MASK 0x40 /* masks CVEN on write */ 171a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define CVEN 0x80 172a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_BURST_LENGTH 0x8 173a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_BURST_RATE 0x9 174a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_QRAM_ADDRESS 0xa 175a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_COUNTER 0xc 176a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 177a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton#define IOBASE2 0x400 /* offset of additional ioports used on 'ao' cards */ 178a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 179a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessenum { 180a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1701st, das1701st_da, das1702st, das1702st_da, das1702hr, 181a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1702hr_da, 182a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1701ao, das1702ao, das1801st, das1801st_da, das1802st, das1802st_da, 183a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1802hr, das1802hr_da, das1801hc, das1802hc, das1801ao, das1802ao 184a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess}; 185a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1860a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_attach(struct comedi_device *dev, 1870a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_devconfig *it); 188814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic int das1800_detach(struct comedi_device *dev); 189814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic int das1800_probe(struct comedi_device *dev); 1900a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_cancel(struct comedi_device *dev, 1910a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s); 19270265d24e3404fe798b6edd55a02016b1edb49d7Jiri Slabystatic irqreturn_t das1800_interrupt(int irq, void *d); 1930a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ai_poll(struct comedi_device *dev, 1940a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s); 195814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic void das1800_ai_handler(struct comedi_device *dev); 1960a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic void das1800_handle_dma(struct comedi_device *dev, 1970a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, unsigned int status); 1980a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic void das1800_flush_dma(struct comedi_device *dev, 1990a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s); 2000a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic void das1800_flush_dma_channel(struct comedi_device *dev, 2010a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 202a142785d7c9dd572a5dd963f7142174901465006Matthew Skolaut unsigned int channel, uint16_t *buffer); 203814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic void das1800_handle_fifo_half_full(struct comedi_device *dev, 2040a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s); 205814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic void das1800_handle_fifo_not_empty(struct comedi_device *dev, 2060a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s); 2070a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ai_do_cmdtest(struct comedi_device *dev, 2080a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 2090a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_cmd *cmd); 2100a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ai_do_cmd(struct comedi_device *dev, 2110a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s); 2120a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ai_rinsn(struct comedi_device *dev, 2130a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 2140a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data); 2150a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ao_winsn(struct comedi_device *dev, 2160a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 2170a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data); 2180a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_di_rbits(struct comedi_device *dev, 2190a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 2200a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data); 2210a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_do_wbits(struct comedi_device *dev, 2220a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 2230a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data); 224814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pemberton 225814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic int das1800_set_frequency(struct comedi_device *dev); 226a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessstatic unsigned int burst_convert_arg(unsigned int convert_arg, int round_mode); 227814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic unsigned int suggest_transfer_size(struct comedi_cmd *cmd); 228a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 229a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* analog input ranges */ 2309ced1de69125b60f40127eddaa3be2a92bb0a1dfBill Pembertonstatic const struct comedi_lrange range_ai_das1801 = { 231a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 8, 232a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 2330a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(-5, 5), 2340a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(-1, 1), 2350a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(-0.1, 0.1), 2360a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(-0.02, 0.02), 2370a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(0, 5), 2380a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(0, 1), 2390a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(0, 0.1), 2400a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(0, 0.02), 2410a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral } 242a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess}; 243a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 2449ced1de69125b60f40127eddaa3be2a92bb0a1dfBill Pembertonstatic const struct comedi_lrange range_ai_das1802 = { 245a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 8, 246a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 2470a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(-10, 10), 2480a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(-5, 5), 2490a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(-2.5, 2.5), 2500a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(-1.25, 1.25), 2510a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(0, 10), 2520a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(0, 5), 2530a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(0, 2.5), 2540a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(0, 1.25), 2550a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral } 256a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess}; 257a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 258ce422cf3569444116d7d826b274bd59cc34d3b28Bill Pembertonstruct das1800_board { 259a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess const char *name; 260a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int ai_speed; /* max conversion period in nanoseconds */ 261a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int resolution; /* bits of ai resolution */ 262a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int qram_len; /* length of card's channel / gain queue */ 263a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int common; /* supports AREF_COMMON flag */ 264a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int do_n_chan; /* number of digital output channels */ 265a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int ao_ability; /* 0 == no analog out, 1 == basic analog out, 2 == waveform analog out */ 266a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int ao_n_chan; /* number of analog out channels */ 2679ced1de69125b60f40127eddaa3be2a92bb0a1dfBill Pemberton const struct comedi_lrange *range_ai; /* available input ranges */ 268ce422cf3569444116d7d826b274bd59cc34d3b28Bill Pemberton}; 269a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 270a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* Warning: the maximum conversion speeds listed below are 271a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * not always achievable depending on board setup (see 272a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * user manual.) 273a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess */ 274ce422cf3569444116d7d826b274bd59cc34d3b28Bill Pembertonstatic const struct das1800_board das1800_boards[] = { 275a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 2760a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1701st", 2770a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 6250, 2780a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 2790a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 2800a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 2810a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 2820a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 0, 2830a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 0, 2840a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1801, 2850a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 286a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 2870a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1701st-da", 2880a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 6250, 2890a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 2900a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 2910a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 2920a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 2930a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 1, 2940a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 4, 2950a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1801, 2960a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 297a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 2980a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1702st", 2990a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 6250, 3000a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 3010a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 3020a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 3030a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 3040a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 0, 3050a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 0, 3060a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 3070a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 308a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 3090a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1702st-da", 3100a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 6250, 3110a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 3120a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 3130a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 3140a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 3150a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 1, 3160a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 4, 3170a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 3180a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 319a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 3200a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1702hr", 3210a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 20000, 3220a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 16, 3230a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 3240a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 3250a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 3260a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 0, 3270a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 0, 3280a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 3290a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 330a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 3310a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1702hr-da", 3320a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 20000, 3330a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 16, 3340a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 3350a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 3360a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 3370a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 1, 3380a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 2, 3390a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 3400a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 341a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 3420a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1701ao", 3430a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 6250, 3440a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 3450a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 3460a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 3470a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 3480a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 2, 3490a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 2, 3500a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1801, 3510a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 352a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 3530a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1702ao", 3540a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 6250, 3550a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 3560a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 3570a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 3580a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 3590a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 2, 3600a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 2, 3610a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 3620a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 363a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 3640a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1801st", 3650a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 3000, 3660a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 3670a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 3680a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 3690a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 3700a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 0, 3710a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 0, 3720a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1801, 3730a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 374a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 3750a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1801st-da", 3760a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 3000, 3770a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 3780a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 3790a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 3800a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 3810a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 0, 3820a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 4, 3830a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1801, 3840a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 385a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 3860a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1802st", 3870a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 3000, 3880a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 3890a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 3900a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 3910a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 3920a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 0, 3930a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 0, 3940a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 3950a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 396a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 3970a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1802st-da", 3980a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 3000, 3990a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 4000a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 4010a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 4020a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 4030a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 1, 4040a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 4, 4050a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 4060a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 407a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 4080a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1802hr", 4090a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 10000, 4100a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 16, 4110a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 4120a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 4130a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 4140a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 0, 4150a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 0, 4160a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 4170a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 418a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 4190a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1802hr-da", 4200a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 10000, 4210a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 16, 4220a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 4230a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 4240a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 4250a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 1, 4260a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 2, 4270a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 4280a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 429a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 4300a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1801hc", 4310a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 3000, 4320a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 4330a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 64, 4340a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 0, 4350a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 8, 4360a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 1, 4370a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 2, 4380a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1801, 4390a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 440a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 4410a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1802hc", 4420a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 3000, 4430a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 4440a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 64, 4450a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 0, 4460a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 8, 4470a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 1, 4480a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 2, 4490a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 4500a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 451a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 4520a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1801ao", 4530a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 3000, 4540a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 4550a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 4560a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 4570a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 4580a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 2, 4590a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 2, 4600a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1801, 4610a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 462a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 4630a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1802ao", 4640a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 3000, 4650a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 4660a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 4670a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 4680a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 4690a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 2, 4700a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 2, 4710a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 4720a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 473a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess}; 474a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 475a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* 476a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * Useful for shorthand access to the particular board structure 477a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess */ 478ce422cf3569444116d7d826b274bd59cc34d3b28Bill Pemberton#define thisboard ((const struct das1800_board *)dev->board_ptr) 479a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 4800c5a144d730a68967dfb3f8163260a142e3282e3Bill Pembertonstruct das1800_private { 481a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess volatile unsigned int count; /* number of data points left to be taken */ 482a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int divisor1; /* value to load into board's counter 1 for timed conversions */ 483a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int divisor2; /* value to load into board's counter 2 for timed conversions */ 484a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int do_bits; /* digital output bits */ 485a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int irq_dma_bits; /* bits for control register b */ 486a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* dma bits for control register b, stored so that dma can be 487a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * turned on and off */ 488a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int dma_bits; 489a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int dma0; /* dma channels used */ 490a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int dma1; 491a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess volatile unsigned int dma_current; /* dma channel currently in use */ 492a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess uint16_t *ai_buf0; /* pointers to dma buffers */ 493a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess uint16_t *ai_buf1; 494a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess uint16_t *dma_current_buf; /* pointer to dma buffer currently being used */ 495a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int dma_transfer_size; /* size of transfer currently used, in bytes */ 496a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long iobase2; /* secondary io address used for analog out on 'ao' boards */ 497a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess short ao_update_bits; /* remembers the last write to the 'update' dac */ 4980c5a144d730a68967dfb3f8163260a142e3282e3Bill Pemberton}; 499a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 5000c5a144d730a68967dfb3f8163260a142e3282e3Bill Pemberton#define devpriv ((struct das1800_private *)dev->private) 501a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 502a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* analog out range for boards with basic analog out */ 5039ced1de69125b60f40127eddaa3be2a92bb0a1dfBill Pembertonstatic const struct comedi_lrange range_ao_1 = { 504a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1, 505a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 5060a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(-10, 10), 5070a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral } 508a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess}; 509a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 510a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* analog out range for 'ao' boards */ 511a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* 5129ced1de69125b60f40127eddaa3be2a92bb0a1dfBill Pembertonstatic const struct comedi_lrange range_ao_2 = { 513a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 2, 514a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 515a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess RANGE(-10, 10), 516a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess RANGE(-5, 5), 517a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 518a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess}; 519a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess*/ 520a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 521139dfbdfacb02e3ef3df936d2fabd1ad5f14ea88Bill Pembertonstatic struct comedi_driver driver_das1800 = { 52268c3dbff9fc9f25872408d0e95980d41733d48d0Bill Pemberton .driver_name = "das1800", 52368c3dbff9fc9f25872408d0e95980d41733d48d0Bill Pemberton .module = THIS_MODULE, 52468c3dbff9fc9f25872408d0e95980d41733d48d0Bill Pemberton .attach = das1800_attach, 52568c3dbff9fc9f25872408d0e95980d41733d48d0Bill Pemberton .detach = das1800_detach, 5268629efa4cbf6f89a54a85af4b8bc31762af01800Bill Pemberton .num_names = ARRAY_SIZE(das1800_boards), 52768c3dbff9fc9f25872408d0e95980d41733d48d0Bill Pemberton .board_name = &das1800_boards[0].name, 52868c3dbff9fc9f25872408d0e95980d41733d48d0Bill Pemberton .offset = sizeof(struct das1800_board), 529a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess}; 530a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 531a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* 532a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * A convenient macro that defines init_module() and cleanup_module(), 533a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * as necessary. 534a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess */ 5357114a28011f9d5f3d981731ad341177c21f9d948Arun Thomasstatic int __init driver_das1800_init_module(void) 5367114a28011f9d5f3d981731ad341177c21f9d948Arun Thomas{ 5377114a28011f9d5f3d981731ad341177c21f9d948Arun Thomas return comedi_driver_register(&driver_das1800); 5387114a28011f9d5f3d981731ad341177c21f9d948Arun Thomas} 5397114a28011f9d5f3d981731ad341177c21f9d948Arun Thomas 5407114a28011f9d5f3d981731ad341177c21f9d948Arun Thomasstatic void __exit driver_das1800_cleanup_module(void) 5417114a28011f9d5f3d981731ad341177c21f9d948Arun Thomas{ 5427114a28011f9d5f3d981731ad341177c21f9d948Arun Thomas comedi_driver_unregister(&driver_das1800); 5437114a28011f9d5f3d981731ad341177c21f9d948Arun Thomas} 5447114a28011f9d5f3d981731ad341177c21f9d948Arun Thomas 5457114a28011f9d5f3d981731ad341177c21f9d948Arun Thomasmodule_init(driver_das1800_init_module); 5467114a28011f9d5f3d981731ad341177c21f9d948Arun Thomasmodule_exit(driver_das1800_cleanup_module); 547a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 548da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int das1800_init_dma(struct comedi_device *dev, unsigned int dma0, 5490a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral unsigned int dma1) 550a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 551a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long flags; 552a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 553a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* need an irq to do dma */ 554a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dev->irq && dma0) { 555a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* encode dma0 and dma1 into 2 digit hexadecimal for switch */ 556a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch ((dma0 & 0x7) | (dma1 << 4)) { 557a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case 0x5: /* dma0 == 5 */ 558a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_bits |= DMA_CH5; 559a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 560a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case 0x6: /* dma0 == 6 */ 561a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_bits |= DMA_CH6; 562a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 563a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case 0x7: /* dma0 == 7 */ 564a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_bits |= DMA_CH7; 565a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 566a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case 0x65: /* dma0 == 5, dma1 == 6 */ 567a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_bits |= DMA_CH5_CH6; 568a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 569a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case 0x76: /* dma0 == 6, dma1 == 7 */ 570a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_bits |= DMA_CH6_CH7; 571a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 572a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case 0x57: /* dma0 == 7, dma1 == 5 */ 573a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_bits |= DMA_CH7_CH5; 574a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 575a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 576a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" only supports dma channels 5 through 7\n" 5770a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral " Dual dma only allows the following combinations:\n" 5780a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral " dma 5,6 / 6,7 / or 7,5\n"); 579a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -EINVAL; 580a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 581a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 582a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (request_dma(dma0, driver_das1800.driver_name)) { 583904c02968b4c714e5fb6e750e746d8eceb641dd9Ravishankar karkala Mallikarjunayya dev_err(dev->hw_dev, "failed to allocate dma channel %i\n", 584904c02968b4c714e5fb6e750e746d8eceb641dd9Ravishankar karkala Mallikarjunayya dma0); 585a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -EINVAL; 586a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 587a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma0 = dma0; 588a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current = dma0; 589a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dma1) { 590a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (request_dma(dma1, driver_das1800.driver_name)) { 591904c02968b4c714e5fb6e750e746d8eceb641dd9Ravishankar karkala Mallikarjunayya dev_err(dev->hw_dev, "failed to allocate dma channel %i\n", 592904c02968b4c714e5fb6e750e746d8eceb641dd9Ravishankar karkala Mallikarjunayya dma1); 593a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -EINVAL; 594a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 595a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma1 = dma1; 596a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 597a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->ai_buf0 = kmalloc(DMA_BUF_SIZE, GFP_KERNEL | GFP_DMA); 598a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->ai_buf0 == NULL) 599a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -ENOMEM; 600a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current_buf = devpriv->ai_buf0; 601a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dma1) { 602a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->ai_buf1 = 6030a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral kmalloc(DMA_BUF_SIZE, GFP_KERNEL | GFP_DMA); 604a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->ai_buf1 == NULL) 605a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -ENOMEM; 606a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 607a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess flags = claim_dma_lock(); 608a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess disable_dma(devpriv->dma0); 609a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess set_dma_mode(devpriv->dma0, DMA_MODE_READ); 610a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dma1) { 611a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess disable_dma(devpriv->dma1); 612a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess set_dma_mode(devpriv->dma1, DMA_MODE_READ); 613a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 614a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess release_dma_lock(flags); 615a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 616a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 0; 617a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 618a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 6190a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_attach(struct comedi_device *dev, 6200a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_devconfig *it) 621a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 62234c43922e62708d45e9660eee4b4f1fb7b4bf2c7Bill Pemberton struct comedi_subdevice *s; 623a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long iobase = it->options[0]; 624a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int irq = it->options[1]; 625a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int dma0 = it->options[2]; 626a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int dma1 = it->options[3]; 627a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long iobase2; 628a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int board; 629a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int retval; 630a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 631a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* allocate and initialize dev->private */ 6320c5a144d730a68967dfb3f8163260a142e3282e3Bill Pemberton if (alloc_private(dev, sizeof(struct das1800_private)) < 0) 633a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -ENOMEM; 634a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 635a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk("comedi%d: %s: io 0x%lx", dev->minor, driver_das1800.driver_name, 6360a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral iobase); 637a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (irq) { 638a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(", irq %u", irq); 639a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dma0) { 640a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(", dma %u", dma0); 641a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dma1) 642a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" and %u", dma1); 643a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 644a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 645a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk("\n"); 646a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 647a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (iobase == 0) { 648a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" io base address required\n"); 649a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -EINVAL; 650a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 651a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 652a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* check if io addresses are available */ 653a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!request_region(iobase, DAS1800_SIZE, driver_das1800.driver_name)) { 6540a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral printk 6550a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (" I/O port conflict: failed to allocate ports 0x%lx to 0x%lx\n", 6560a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral iobase, iobase + DAS1800_SIZE - 1); 657a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -EIO; 658a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 659a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess dev->iobase = iobase; 660a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 661a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess board = das1800_probe(dev); 662a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (board < 0) { 6631e3a2875684bcc4af1e2f6597fdd502cc59e3593Ravishankar karkala Mallikarjunayya dev_err(dev->hw_dev, "unable to determine board type\n"); 664a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -ENODEV; 665a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 666a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 667a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess dev->board_ptr = das1800_boards + board; 668a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess dev->board_name = thisboard->name; 669a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 670a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* if it is an 'ao' board with fancy analog out then we need extra io ports */ 671a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (thisboard->ao_ability == 2) { 672a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess iobase2 = iobase + IOBASE2; 673a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!request_region(iobase2, DAS1800_SIZE, 6740a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral driver_das1800.driver_name)) { 6750a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral printk 6760a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (" I/O port conflict: failed to allocate ports 0x%lx to 0x%lx\n", 6770a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral iobase2, iobase2 + DAS1800_SIZE - 1); 678a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -EIO; 679a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 680a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->iobase2 = iobase2; 681a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 682a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 683a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* grab our IRQ */ 684a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (irq) { 6855f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman if (request_irq(irq, das1800_interrupt, 0, 686a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess driver_das1800.driver_name, dev)) { 6871e3a2875684bcc4af1e2f6597fdd502cc59e3593Ravishankar karkala Mallikarjunayya dev_dbg(dev->hw_dev, "unable to allocate irq %u\n", 6881e3a2875684bcc4af1e2f6597fdd502cc59e3593Ravishankar karkala Mallikarjunayya irq); 689a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -EINVAL; 690a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 691a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 692a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess dev->irq = irq; 693a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 694a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* set bits that tell card which irq to use */ 695a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch (irq) { 696a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 0: 697a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 698a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 3: 699a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits |= 0x8; 700a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 701a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 5: 702a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits |= 0x10; 703a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 704a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 7: 705a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits |= 0x18; 706a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 707a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 10: 708a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits |= 0x28; 709a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 710a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 11: 711a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits |= 0x30; 712a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 713a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 15: 714a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits |= 0x38; 715a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 716a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 7171e3a2875684bcc4af1e2f6597fdd502cc59e3593Ravishankar karkala Mallikarjunayya dev_err(dev->hw_dev, "irq out of range\n"); 718a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -EINVAL; 719a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 720a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 721a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 722a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess retval = das1800_init_dma(dev, dma0, dma1); 723a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (retval < 0) 724a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return retval; 725a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 726a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->ai_buf0 == NULL) { 727a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->ai_buf0 = 7280a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral kmalloc(FIFO_SIZE * sizeof(uint16_t), GFP_KERNEL); 729a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->ai_buf0 == NULL) 730a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -ENOMEM; 731a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 732a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 733a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (alloc_subdevices(dev, 4) < 0) 734a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -ENOMEM; 735a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 736a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* analog input subdevice */ 737a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s = dev->subdevices + 0; 738a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess dev->read_subdev = s; 739a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->type = COMEDI_SUBD_AI; 740a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->subdev_flags = SDF_READABLE | SDF_DIFF | SDF_GROUND | SDF_CMD_READ; 741a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (thisboard->common) 742a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->subdev_flags |= SDF_COMMON; 743a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->n_chan = thisboard->qram_len; 744a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->len_chanlist = thisboard->qram_len; 745a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->maxdata = (1 << thisboard->resolution) - 1; 746a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->range_table = thisboard->range_ai; 747a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->do_cmd = das1800_ai_do_cmd; 748a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->do_cmdtest = das1800_ai_do_cmdtest; 749a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->insn_read = das1800_ai_rinsn; 750a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->poll = das1800_ai_poll; 751a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->cancel = das1800_cancel; 752a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 753a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* analog out */ 754a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s = dev->subdevices + 1; 755a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (thisboard->ao_ability == 1) { 756a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->type = COMEDI_SUBD_AO; 757a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->subdev_flags = SDF_WRITABLE; 758a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->n_chan = thisboard->ao_n_chan; 759a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->maxdata = (1 << thisboard->resolution) - 1; 760a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->range_table = &range_ao_1; 761a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->insn_write = das1800_ao_winsn; 762a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } else { 763a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->type = COMEDI_SUBD_UNUSED; 764a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 765a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 766a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* di */ 767a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s = dev->subdevices + 2; 768a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->type = COMEDI_SUBD_DI; 769a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->subdev_flags = SDF_READABLE; 770a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->n_chan = 4; 771a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->maxdata = 1; 772a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->range_table = &range_digital; 773a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->insn_bits = das1800_di_rbits; 774a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 775a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* do */ 776a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s = dev->subdevices + 3; 777a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->type = COMEDI_SUBD_DO; 778a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->subdev_flags = SDF_WRITABLE | SDF_READABLE; 779a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->n_chan = thisboard->do_n_chan; 780a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->maxdata = 1; 781a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->range_table = &range_digital; 782a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->insn_bits = das1800_do_wbits; 783a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 784a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_cancel(dev, dev->read_subdev); 785a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 786a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* initialize digital out channels */ 787a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(devpriv->do_bits, dev->iobase + DAS1800_DIGITAL); 788a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 789a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* initialize analog out channels */ 790a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (thisboard->ao_ability == 1) { 791a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* select 'update' dac channel for baseAddress + 0x0 */ 792a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(DAC(thisboard->ao_n_chan - 1), 7930a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral dev->iobase + DAS1800_SELECT); 794a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outw(devpriv->ao_update_bits, dev->iobase + DAS1800_DAC); 795a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 796a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 797a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 0; 798a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess}; 799a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 800da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int das1800_detach(struct comedi_device *dev) 801a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 802a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* only free stuff if it has been allocated by _attach */ 803a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dev->iobase) 804a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess release_region(dev->iobase, DAS1800_SIZE); 805a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dev->irq) 8065f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman free_irq(dev->irq, dev); 807a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dev->private) { 808a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->iobase2) 809a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess release_region(devpriv->iobase2, DAS1800_SIZE); 810a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->dma0) 811a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess free_dma(devpriv->dma0); 812a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->dma1) 813a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess free_dma(devpriv->dma1); 8141bf2ee4ea19d3ebeb8fe35c03dd44cb1d851e19fDavid Binderman kfree(devpriv->ai_buf0); 8151bf2ee4ea19d3ebeb8fe35c03dd44cb1d851e19fDavid Binderman kfree(devpriv->ai_buf1); 816a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 817a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 818a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk("comedi%d: %s: remove\n", dev->minor, 8190a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral driver_das1800.driver_name); 820a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 821a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 0; 822a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess}; 823a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 824a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* probes and checks das-1800 series board type 825a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess */ 826da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int das1800_probe(struct comedi_device *dev) 827a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 828a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int id; 829a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int board; 830a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 831a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess id = (inb(dev->iobase + DAS1800_DIGITAL) >> 4) & 0xf; /* get id bits */ 8320a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral board = ((struct das1800_board *)dev->board_ptr) - das1800_boards; 833a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 834a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch (id) { 835a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 0x3: 836a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (board == das1801st_da || board == das1802st_da || 8370a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral board == das1701st_da || board == das1702st_da) { 838a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" Board model: %s\n", 8390a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral das1800_boards[board].name); 840a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return board; 841a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 8420a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral printk 8430a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (" Board model (probed, not recommended): das-1800st-da series\n"); 844a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return das1801st; 845a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 846a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 0x4: 847a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (board == das1802hr_da || board == das1702hr_da) { 848a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" Board model: %s\n", 8490a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral das1800_boards[board].name); 850a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return board; 851a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 8520a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral printk 8530a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (" Board model (probed, not recommended): das-1802hr-da\n"); 854a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return das1802hr; 855a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 856a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 0x5: 857a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (board == das1801ao || board == das1802ao || 8580a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral board == das1701ao || board == das1702ao) { 859a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" Board model: %s\n", 8600a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral das1800_boards[board].name); 861a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return board; 862a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 8630a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral printk 8640a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (" Board model (probed, not recommended): das-1800ao series\n"); 865a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return das1801ao; 866a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 867a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 0x6: 868a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (board == das1802hr || board == das1702hr) { 869a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" Board model: %s\n", 8700a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral das1800_boards[board].name); 871a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return board; 872a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 873a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" Board model (probed, not recommended): das-1802hr\n"); 874a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return das1802hr; 875a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 876a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 0x7: 877a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (board == das1801st || board == das1802st || 8780a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral board == das1701st || board == das1702st) { 879a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" Board model: %s\n", 8800a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral das1800_boards[board].name); 881a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return board; 882a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 8830a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral printk 8840a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (" Board model (probed, not recommended): das-1800st series\n"); 885a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return das1801st; 886a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 887a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 0x8: 888a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (board == das1801hc || board == das1802hc) { 889a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" Board model: %s\n", 8900a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral das1800_boards[board].name); 891a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return board; 892a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 8930a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral printk 8940a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (" Board model (probed, not recommended): das-1800hc series\n"); 895a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return das1801hc; 896a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 897a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 8980a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral printk 8990a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (" Board model: probe returned 0x%x (unknown, please report)\n", 9000a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral id); 901a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return board; 902a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 903a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 904a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -1; 905a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 906a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 9070a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ai_poll(struct comedi_device *dev, 9080a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s) 909a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 910a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long flags; 911a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 912a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* prevent race with interrupt handler */ 9135f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_lock_irqsave(&dev->spinlock, flags); 914a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_ai_handler(dev); 9155f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_unlock_irqrestore(&dev->spinlock, flags); 916a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 917a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return s->async->buf_write_count - s->async->buf_read_count; 918a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 919a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 92070265d24e3404fe798b6edd55a02016b1edb49d7Jiri Slabystatic irqreturn_t das1800_interrupt(int irq, void *d) 921a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 92271b5f4f11971dea972832ad63a994c7e5b45db6bBill Pemberton struct comedi_device *dev = d; 923a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int status; 924a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 925a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dev->attached == 0) { 926a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess comedi_error(dev, "premature interrupt"); 927a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return IRQ_HANDLED; 928a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 929a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 930a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* Prevent race with das1800_ai_poll() on multi processor systems. 931a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * Also protects indirect addressing in das1800_ai_handler */ 932a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess spin_lock(&dev->spinlock); 933a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess status = inb(dev->iobase + DAS1800_STATUS); 934a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 935a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* if interrupt was not caused by das-1800 */ 936a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!(status & INT)) { 937a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess spin_unlock(&dev->spinlock); 938a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return IRQ_NONE; 939a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 940a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* clear the interrupt status bit INT */ 941a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(CLEAR_INTR_MASK & ~INT, dev->iobase + DAS1800_STATUS); 942a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* handle interrupt */ 943a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_ai_handler(dev); 944a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 945a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess spin_unlock(&dev->spinlock); 946a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return IRQ_HANDLED; 947a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 948a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 949a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* the guts of the interrupt handler, that is shared with das1800_ai_poll */ 950da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic void das1800_ai_handler(struct comedi_device *dev) 951a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 95234c43922e62708d45e9660eee4b4f1fb7b4bf2c7Bill Pemberton struct comedi_subdevice *s = dev->subdevices + 0; /* analog input subdevice */ 953d163679ceec20c50f9aee880fa76c0c1185244a8Bill Pemberton struct comedi_async *async = s->async; 954ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd *cmd = &async->cmd; 955a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int status = inb(dev->iobase + DAS1800_STATUS); 956a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 957a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess async->events = 0; 958a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* select adc for base address + 0 */ 959a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(ADC, dev->iobase + DAS1800_SELECT); 960a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* dma buffer full */ 961a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->irq_dma_bits & DMA_ENABLED) { 962a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* look for data from dma transfer even if dma terminal count hasn't happened yet */ 963a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_handle_dma(dev, s, status); 964a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton } else if (status & FHF) { /* if fifo half full */ 965a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_handle_fifo_half_full(dev, s); 966a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton } else if (status & FNE) { /* if fifo not empty */ 967a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_handle_fifo_not_empty(dev, s); 968a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 969a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 970a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess async->events |= COMEDI_CB_BLOCK; 971a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* if the card's fifo has overflowed */ 972a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (status & OVF) { 973a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* clear OVF interrupt bit */ 974a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(CLEAR_INTR_MASK & ~OVF, dev->iobase + DAS1800_STATUS); 975a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess comedi_error(dev, "DAS1800 FIFO overflow"); 976a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_cancel(dev, s); 977a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA; 978a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess comedi_event(dev, s); 979a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 980a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 981a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* stop taking data if appropriate */ 982a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* stop_src TRIG_EXT */ 983a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (status & CT0TC) { 984a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* clear CT0TC interrupt bit */ 985a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(CLEAR_INTR_MASK & ~CT0TC, dev->iobase + DAS1800_STATUS); 986a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* make sure we get all remaining data from board before quitting */ 987a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->irq_dma_bits & DMA_ENABLED) 988a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_flush_dma(dev, s); 989a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess else 990a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_handle_fifo_not_empty(dev, s); 991a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_cancel(dev, s); /* disable hardware conversions */ 992a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess async->events |= COMEDI_CB_EOA; 993a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton } else if (cmd->stop_src == TRIG_COUNT && devpriv->count == 0) { /* stop_src TRIG_COUNT */ 994a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_cancel(dev, s); /* disable hardware conversions */ 995a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess async->events |= COMEDI_CB_EOA; 996a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 997a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 998a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess comedi_event(dev, s); 999a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1000a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 1001a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1002a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 10030a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic void das1800_handle_dma(struct comedi_device *dev, 10040a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, unsigned int status) 1005a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1006a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long flags; 1007a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess const int dual_dma = devpriv->irq_dma_bits & DMA_DUAL; 1008a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1009a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess flags = claim_dma_lock(); 1010a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_flush_dma_channel(dev, s, devpriv->dma_current, 10110a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral devpriv->dma_current_buf); 1012a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* re-enable dma channel */ 1013a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess set_dma_addr(devpriv->dma_current, 10140a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral virt_to_bus(devpriv->dma_current_buf)); 1015a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess set_dma_count(devpriv->dma_current, devpriv->dma_transfer_size); 1016a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess enable_dma(devpriv->dma_current); 1017a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess release_dma_lock(flags); 1018a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1019a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (status & DMATC) { 1020a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* clear DMATC interrupt bit */ 1021a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(CLEAR_INTR_MASK & ~DMATC, dev->iobase + DAS1800_STATUS); 1022a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* switch dma channels for next time, if appropriate */ 1023a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dual_dma) { 1024a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* read data from the other channel next time */ 1025a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->dma_current == devpriv->dma0) { 1026a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current = devpriv->dma1; 1027a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current_buf = devpriv->ai_buf1; 1028a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } else { 1029a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current = devpriv->dma0; 1030a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current_buf = devpriv->ai_buf0; 1031a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1032a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1033a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1034a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1035a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 1036a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1037a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1038da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic inline uint16_t munge_bipolar_sample(const struct comedi_device *dev, 10390a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral uint16_t sample) 1040a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1041a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess sample += 1 << (thisboard->resolution - 1); 1042a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return sample; 1043a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1044a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 10450a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic void munge_data(struct comedi_device *dev, uint16_t * array, 10460a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral unsigned int num_elements) 1047a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1048a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int i; 1049a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int unipolar; 1050a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1051a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* see if card is using a unipolar or bipolar range so we can munge data correctly */ 1052a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unipolar = inb(dev->iobase + DAS1800_CONTROL_C) & UB; 1053a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1054a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* convert to unsigned type if we are in a bipolar mode */ 1055a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!unipolar) { 1056a142785d7c9dd572a5dd963f7142174901465006Matthew Skolaut for (i = 0; i < num_elements; i++) 1057a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess array[i] = munge_bipolar_sample(dev, array[i]); 1058a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1059a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1060a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1061a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* Utility function used by das1800_flush_dma() and das1800_handle_dma(). 1062a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * Assumes dma lock is held */ 10630a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic void das1800_flush_dma_channel(struct comedi_device *dev, 10640a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 1065a142785d7c9dd572a5dd963f7142174901465006Matthew Skolaut unsigned int channel, uint16_t *buffer) 1066a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1067a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int num_bytes, num_samples; 1068ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd *cmd = &s->async->cmd; 1069a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1070a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess disable_dma(channel); 1071a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1072a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* clear flip-flop to make sure 2-byte registers 1073a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * get set correctly */ 1074a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess clear_dma_ff(channel); 1075a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1076a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* figure out how many points to read */ 1077a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess num_bytes = devpriv->dma_transfer_size - get_dma_residue(channel); 1078790c55415aa31f4c732729f94d2c3a54f7d3bfc2Bill Pemberton num_samples = num_bytes / sizeof(short); 1079a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1080a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* if we only need some of the points */ 1081a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->stop_src == TRIG_COUNT && devpriv->count < num_samples) 1082a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess num_samples = devpriv->count; 1083a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1084a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess munge_data(dev, buffer, num_samples); 1085a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cfc_write_array_to_buffer(s, buffer, num_bytes); 1086a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (s->async->cmd.stop_src == TRIG_COUNT) 1087a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->count -= num_samples; 1088a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1089a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 1090a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1091a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 109225985edcedea6396277003854657b5f3cb31a628Lucas De Marchi/* flushes remaining data from board when external trigger has stopped acquisition 1093a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * and we are using dma transfers */ 10940a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic void das1800_flush_dma(struct comedi_device *dev, 10950a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s) 1096a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1097a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long flags; 1098a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess const int dual_dma = devpriv->irq_dma_bits & DMA_DUAL; 1099a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1100a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess flags = claim_dma_lock(); 1101a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_flush_dma_channel(dev, s, devpriv->dma_current, 11020a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral devpriv->dma_current_buf); 1103a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1104a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dual_dma) { 1105a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* switch to other channel and flush it */ 1106a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->dma_current == devpriv->dma0) { 1107a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current = devpriv->dma1; 1108a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current_buf = devpriv->ai_buf1; 1109a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } else { 1110a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current = devpriv->dma0; 1111a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current_buf = devpriv->ai_buf0; 1112a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1113a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_flush_dma_channel(dev, s, devpriv->dma_current, 11140a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral devpriv->dma_current_buf); 1115a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1116a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1117a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess release_dma_lock(flags); 1118a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1119a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* get any remaining samples in fifo */ 1120a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_handle_fifo_not_empty(dev, s); 1121a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1122a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 1123a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1124a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1125da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic void das1800_handle_fifo_half_full(struct comedi_device *dev, 11260a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s) 1127a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1128a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int numPoints = 0; /* number of points to read */ 1129ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd *cmd = &s->async->cmd; 1130a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1131a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess numPoints = FIFO_SIZE / 2; 1132a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* if we only need some of the points */ 1133a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->stop_src == TRIG_COUNT && devpriv->count < numPoints) 1134a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess numPoints = devpriv->count; 1135a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess insw(dev->iobase + DAS1800_FIFO, devpriv->ai_buf0, numPoints); 1136a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess munge_data(dev, devpriv->ai_buf0, numPoints); 1137a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cfc_write_array_to_buffer(s, devpriv->ai_buf0, 11380a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral numPoints * sizeof(devpriv->ai_buf0[0])); 1139a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->stop_src == TRIG_COUNT) 1140a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->count -= numPoints; 1141a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 1142a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1143a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1144da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic void das1800_handle_fifo_not_empty(struct comedi_device *dev, 11450a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s) 1146a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1147790c55415aa31f4c732729f94d2c3a54f7d3bfc2Bill Pemberton short dpnt; 1148a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int unipolar; 1149ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd *cmd = &s->async->cmd; 1150a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1151a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unipolar = inb(dev->iobase + DAS1800_CONTROL_C) & UB; 1152a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1153a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess while (inb(dev->iobase + DAS1800_STATUS) & FNE) { 1154a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->stop_src == TRIG_COUNT && devpriv->count == 0) 1155a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1156a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess dpnt = inw(dev->iobase + DAS1800_FIFO); 1157a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* convert to unsigned type if we are in a bipolar mode */ 1158a142785d7c9dd572a5dd963f7142174901465006Matthew Skolaut if (!unipolar) 1159a142785d7c9dd572a5dd963f7142174901465006Matthew Skolaut ; 1160a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess dpnt = munge_bipolar_sample(dev, dpnt); 1161a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cfc_write_to_buffer(s, dpnt); 1162a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->stop_src == TRIG_COUNT) 1163a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->count--; 1164a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1165a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1166a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 1167a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1168a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1169da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int das1800_cancel(struct comedi_device *dev, struct comedi_subdevice *s) 1170a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1171a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(0x0, dev->iobase + DAS1800_STATUS); /* disable conversions */ 1172a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(0x0, dev->iobase + DAS1800_CONTROL_B); /* disable interrupts and dma */ 1173a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(0x0, dev->iobase + DAS1800_CONTROL_A); /* disable and clear fifo and stop triggering */ 1174a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->dma0) 1175a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess disable_dma(devpriv->dma0); 1176a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->dma1) 1177a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess disable_dma(devpriv->dma1); 1178a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 0; 1179a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1180a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1181a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* test analog input cmd */ 11820a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ai_do_cmdtest(struct comedi_device *dev, 11830a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 11840a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_cmd *cmd) 1185a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1186a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int err = 0; 1187a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int tmp; 1188a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int tmp_arg; 1189a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int i; 1190a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int unipolar; 1191a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1192a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* step 1: make sure trigger sources are trivially valid */ 1193a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1194a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess tmp = cmd->start_src; 1195a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->start_src &= TRIG_NOW | TRIG_EXT; 1196a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!cmd->start_src || tmp != cmd->start_src) 1197a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1198a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1199a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess tmp = cmd->scan_begin_src; 1200a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->scan_begin_src &= TRIG_FOLLOW | TRIG_TIMER | TRIG_EXT; 1201a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) 1202a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1203a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1204a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess tmp = cmd->convert_src; 1205a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->convert_src &= TRIG_TIMER | TRIG_EXT; 1206a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!cmd->convert_src || tmp != cmd->convert_src) 1207a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1208a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1209a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess tmp = cmd->scan_end_src; 1210a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->scan_end_src &= TRIG_COUNT; 1211a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!cmd->scan_end_src || tmp != cmd->scan_end_src) 1212a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1213a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1214a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess tmp = cmd->stop_src; 1215a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->stop_src &= TRIG_COUNT | TRIG_EXT | TRIG_NONE; 1216a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!cmd->stop_src || tmp != cmd->stop_src) 1217a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1218a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1219a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (err) 1220a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 1; 1221a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1222a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* step 2: make sure trigger sources are unique and mutually compatible */ 1223a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1224a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* uniqueness check */ 1225a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->start_src != TRIG_NOW && cmd->start_src != TRIG_EXT) 1226a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1227a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->scan_begin_src != TRIG_FOLLOW && 12280a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd->scan_begin_src != TRIG_TIMER && 12290a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd->scan_begin_src != TRIG_EXT) 1230a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1231a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->convert_src != TRIG_TIMER && cmd->convert_src != TRIG_EXT) 1232a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1233a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->stop_src != TRIG_COUNT && 12340a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd->stop_src != TRIG_NONE && cmd->stop_src != TRIG_EXT) 1235a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1236a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* compatibility check */ 1237a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->scan_begin_src != TRIG_FOLLOW && 12380a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd->convert_src != TRIG_TIMER) 1239a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1240a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1241a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (err) 1242a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 2; 1243a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1244a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* step 3: make sure arguments are trivially compatible */ 1245a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1246a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->start_arg != 0) { 1247a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->start_arg = 0; 1248a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1249a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1250a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->convert_src == TRIG_TIMER) { 1251a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->convert_arg < thisboard->ai_speed) { 1252a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->convert_arg = thisboard->ai_speed; 1253a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1254a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1255a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1256a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!cmd->chanlist_len) { 1257a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->chanlist_len = 1; 1258a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1259a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1260a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->scan_end_arg != cmd->chanlist_len) { 1261a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->scan_end_arg = cmd->chanlist_len; 1262a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1263a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1264a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1265a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch (cmd->stop_src) { 1266a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_COUNT: 1267a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!cmd->stop_arg) { 1268a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->stop_arg = 1; 1269a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1270a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1271a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1272a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_NONE: 1273a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->stop_arg != 0) { 1274a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->stop_arg = 0; 1275a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1276a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1277a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1278a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 1279a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1280a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1281a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1282a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (err) 1283a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 3; 1284a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1285a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* step 4: fix up any arguments */ 1286a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1287a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->convert_src == TRIG_TIMER) { 1288a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* if we are not in burst mode */ 1289a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->scan_begin_src == TRIG_FOLLOW) { 1290a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess tmp_arg = cmd->convert_arg; 1291a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* calculate counter values that give desired timing */ 1292a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess i8253_cascade_ns_to_timer_2div(TIMER_BASE, 12930a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(devpriv->divisor1), 12940a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(devpriv->divisor2), 12950a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(cmd->convert_arg), 12960a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd-> 12970a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral flags & TRIG_ROUND_MASK); 1298a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (tmp_arg != cmd->convert_arg) 1299a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1300a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1301a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* if we are in burst mode */ 1302a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess else { 1303a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* check that convert_arg is compatible */ 1304a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess tmp_arg = cmd->convert_arg; 1305a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->convert_arg = 13060a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral burst_convert_arg(cmd->convert_arg, 13070a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd->flags & TRIG_ROUND_MASK); 1308a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (tmp_arg != cmd->convert_arg) 1309a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1310a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1311a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->scan_begin_src == TRIG_TIMER) { 1312a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* if scans are timed faster than conversion rate allows */ 1313a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->convert_arg * cmd->chanlist_len > 13140a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd->scan_begin_arg) { 1315a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->scan_begin_arg = 13160a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd->convert_arg * 13170a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd->chanlist_len; 1318a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1319a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1320a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess tmp_arg = cmd->scan_begin_arg; 1321a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* calculate counter values that give desired timing */ 1322a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess i8253_cascade_ns_to_timer_2div(TIMER_BASE, 13230a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(devpriv-> 13240a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral divisor1), 13250a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(devpriv-> 13260a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral divisor2), 13270a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(cmd-> 13280a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral scan_begin_arg), 13290a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd-> 13300a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral flags & 13310a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral TRIG_ROUND_MASK); 1332a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (tmp_arg != cmd->scan_begin_arg) 1333a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1334a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1335a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1336a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1337a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1338a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (err) 1339a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 4; 1340a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1341a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* make sure user is not trying to mix unipolar and bipolar ranges */ 1342a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->chanlist) { 1343a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unipolar = CR_RANGE(cmd->chanlist[0]) & UNIPOLAR; 1344a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess for (i = 1; i < cmd->chanlist_len; i++) { 1345a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (unipolar != (CR_RANGE(cmd->chanlist[i]) & UNIPOLAR)) { 1346a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess comedi_error(dev, 13470a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral "unipolar and bipolar ranges cannot be mixed in the chanlist"); 1348a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1349a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1350a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1351a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1352a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1353a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1354a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (err) 1355a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 5; 1356a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1357a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 0; 1358a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1359a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1360a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* analog input cmd interface */ 1361a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1362a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* first, some utility functions used in the main ai_do_cmd() */ 1363a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1364a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* returns appropriate bits for control register a, depending on command */ 1365ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pembertonstatic int control_a_bits(struct comedi_cmd cmd) 1366a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1367a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int control_a; 1368a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1369a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton control_a = FFEN; /* enable fifo */ 1370a142785d7c9dd572a5dd963f7142174901465006Matthew Skolaut if (cmd.stop_src == TRIG_EXT) 1371a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_a |= ATEN; 1372a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch (cmd.start_src) { 1373a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_EXT: 1374a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_a |= TGEN | CGSL; 1375a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1376a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_NOW: 1377a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_a |= CGEN; 1378a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1379a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 1380a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1381a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1382a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1383a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return control_a; 1384a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1385a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1386a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* returns appropriate bits for control register c, depending on command */ 1387ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pembertonstatic int control_c_bits(struct comedi_cmd cmd) 1388a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1389a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int control_c; 1390a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int aref; 1391a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1392a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* set clock source to internal or external, select analog reference, 1393a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * select unipolar / bipolar 1394a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess */ 1395a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess aref = CR_AREF(cmd.chanlist[0]); 1396a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton control_c = UQEN; /* enable upper qram addresses */ 1397a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (aref != AREF_DIFF) 1398a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_c |= SD; 1399a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (aref == AREF_COMMON) 1400a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_c |= CMEN; 1401a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* if a unipolar range was selected */ 1402a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (CR_RANGE(cmd.chanlist[0]) & UNIPOLAR) 1403a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_c |= UB; 1404a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch (cmd.scan_begin_src) { 1405a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case TRIG_FOLLOW: /* not in burst mode */ 1406a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch (cmd.convert_src) { 1407a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_TIMER: 1408a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* trig on cascaded counters */ 1409a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_c |= IPCLK; 1410a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1411a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_EXT: 1412a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* trig on falling edge of external trigger */ 1413a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_c |= XPCLK; 1414a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1415a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 1416a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1417a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1418a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1419a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_TIMER: 1420a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* burst mode with internal pacer clock */ 1421a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_c |= BMDE | IPCLK; 1422a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1423a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_EXT: 1424a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* burst mode with external trigger */ 1425a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_c |= BMDE | XPCLK; 1426a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1427a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 1428a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1429a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1430a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1431a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return control_c; 1432a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1433a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1434a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* sets up counters */ 1435da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int setup_counters(struct comedi_device *dev, struct comedi_cmd cmd) 1436a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1437a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* setup cascaded counters for conversion/scan frequency */ 1438a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch (cmd.scan_begin_src) { 1439a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case TRIG_FOLLOW: /* not in burst mode */ 1440a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd.convert_src == TRIG_TIMER) { 1441a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* set conversion frequency */ 1442a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess i8253_cascade_ns_to_timer_2div(TIMER_BASE, 14430a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(devpriv->divisor1), 14440a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(devpriv->divisor2), 14450a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(cmd.convert_arg), 14460a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd. 14470a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral flags & TRIG_ROUND_MASK); 1448a142785d7c9dd572a5dd963f7142174901465006Matthew Skolaut if (das1800_set_frequency(dev) < 0) 1449a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -1; 1450a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1451a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1452a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case TRIG_TIMER: /* in burst mode */ 1453a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* set scan frequency */ 1454a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess i8253_cascade_ns_to_timer_2div(TIMER_BASE, &(devpriv->divisor1), 14550a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(devpriv->divisor2), 14560a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(cmd.scan_begin_arg), 14570a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd.flags & TRIG_ROUND_MASK); 1458a142785d7c9dd572a5dd963f7142174901465006Matthew Skolaut if (das1800_set_frequency(dev) < 0) 1459a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -1; 1460a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1461a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 1462a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1463a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1464a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1465a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* setup counter 0 for 'about triggering' */ 1466a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd.stop_src == TRIG_EXT) { 1467a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* load counter 0 in mode 0 */ 1468a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess i8254_load(dev->iobase + DAS1800_COUNTER, 0, 0, 1, 0); 1469a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1470a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1471a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 0; 1472a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1473a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1474a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* sets up dma */ 1475da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic void setup_dma(struct comedi_device *dev, struct comedi_cmd cmd) 1476a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1477a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long lock_flags; 1478a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess const int dual_dma = devpriv->irq_dma_bits & DMA_DUAL; 1479a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1480a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if ((devpriv->irq_dma_bits & DMA_ENABLED) == 0) 1481a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 1482a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1483a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* determine a reasonable dma transfer size */ 1484a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_transfer_size = suggest_transfer_size(&cmd); 1485a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess lock_flags = claim_dma_lock(); 1486a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess disable_dma(devpriv->dma0); 1487a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* clear flip-flop to make sure 2-byte registers for 1488a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * count and address get set correctly */ 1489a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess clear_dma_ff(devpriv->dma0); 1490a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess set_dma_addr(devpriv->dma0, virt_to_bus(devpriv->ai_buf0)); 1491a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* set appropriate size of transfer */ 1492a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess set_dma_count(devpriv->dma0, devpriv->dma_transfer_size); 1493a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current = devpriv->dma0; 1494a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current_buf = devpriv->ai_buf0; 1495a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess enable_dma(devpriv->dma0); 1496a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* set up dual dma if appropriate */ 1497a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dual_dma) { 1498a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess disable_dma(devpriv->dma1); 1499a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* clear flip-flop to make sure 2-byte registers for 1500a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * count and address get set correctly */ 1501a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess clear_dma_ff(devpriv->dma1); 1502a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess set_dma_addr(devpriv->dma1, virt_to_bus(devpriv->ai_buf1)); 1503a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* set appropriate size of transfer */ 1504a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess set_dma_count(devpriv->dma1, devpriv->dma_transfer_size); 1505a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess enable_dma(devpriv->dma1); 1506a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1507a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess release_dma_lock(lock_flags); 1508a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1509a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 1510a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1511a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1512a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* programs channel/gain list into card */ 1513da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic void program_chanlist(struct comedi_device *dev, struct comedi_cmd cmd) 1514a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1515a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int i, n, chan_range; 1516a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long irq_flags; 1517a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton const int range_mask = 0x3; /* masks unipolar/bipolar bit off range */ 1518a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess const int range_bitshift = 8; 1519a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1520a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess n = cmd.chanlist_len; 1521a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* spinlock protects indirect addressing */ 15225f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_lock_irqsave(&dev->spinlock, irq_flags); 1523a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(QRAM, dev->iobase + DAS1800_SELECT); /* select QRAM for baseAddress + 0x0 */ 1524a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(n - 1, dev->iobase + DAS1800_QRAM_ADDRESS); /*set QRAM address start */ 1525a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* make channel / gain list */ 1526a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess for (i = 0; i < n; i++) { 1527a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess chan_range = 15280a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral CR_CHAN(cmd. 15290a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral chanlist[i]) | ((CR_RANGE(cmd.chanlist[i]) & 15300a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral range_mask) << range_bitshift); 1531a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outw(chan_range, dev->iobase + DAS1800_QRAM); 1532a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1533a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(n - 1, dev->iobase + DAS1800_QRAM_ADDRESS); /*finish write to QRAM */ 15345f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_unlock_irqrestore(&dev->spinlock, irq_flags); 1535a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1536a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 1537a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1538a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1539a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* analog input do_cmd */ 15400a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ai_do_cmd(struct comedi_device *dev, 15410a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s) 1542a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1543a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int ret; 1544a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int control_a, control_c; 1545d163679ceec20c50f9aee880fa76c0c1185244a8Bill Pemberton struct comedi_async *async = s->async; 1546ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd cmd = async->cmd; 1547a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1548a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!dev->irq) { 1549a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess comedi_error(dev, 15500a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral "no irq assigned for das-1800, cannot do hardware conversions"); 1551a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -1; 1552a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1553a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1554a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* disable dma on TRIG_WAKE_EOS, or TRIG_RT 1555a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * (because dma in handler is unsafe at hard real-time priority) */ 1556a142785d7c9dd572a5dd963f7142174901465006Matthew Skolaut if (cmd.flags & (TRIG_WAKE_EOS | TRIG_RT)) 1557a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits &= ~DMA_ENABLED; 1558a142785d7c9dd572a5dd963f7142174901465006Matthew Skolaut else 1559a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits |= devpriv->dma_bits; 1560a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* interrupt on end of conversion for TRIG_WAKE_EOS */ 1561a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd.flags & TRIG_WAKE_EOS) { 1562a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* interrupt fifo not empty */ 1563a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits &= ~FIMD; 1564a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } else { 1565a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* interrupt fifo half full */ 1566a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits |= FIMD; 1567a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1568a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* determine how many conversions we need */ 1569a142785d7c9dd572a5dd963f7142174901465006Matthew Skolaut if (cmd.stop_src == TRIG_COUNT) 1570a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->count = cmd.stop_arg * cmd.chanlist_len; 1571a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1572a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_cancel(dev, s); 1573a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1574a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* determine proper bits for control registers */ 1575a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_a = control_a_bits(cmd); 1576a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_c = control_c_bits(cmd); 1577a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1578a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* setup card and start */ 1579a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess program_chanlist(dev, cmd); 1580a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess ret = setup_counters(dev, cmd); 1581a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (ret < 0) { 1582a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess comedi_error(dev, "Error setting up counters"); 1583a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return ret; 1584a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1585a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess setup_dma(dev, cmd); 1586a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(control_c, dev->iobase + DAS1800_CONTROL_C); 1587a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* set conversion rate and length for burst mode */ 1588a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (control_c & BMDE) { 1589a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* program conversion period with number of microseconds minus 1 */ 1590a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(cmd.convert_arg / 1000 - 1, 15910a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral dev->iobase + DAS1800_BURST_RATE); 1592a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(cmd.chanlist_len - 1, dev->iobase + DAS1800_BURST_LENGTH); 1593a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1594a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton outb(devpriv->irq_dma_bits, dev->iobase + DAS1800_CONTROL_B); /* enable irq/dma */ 1595a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(control_a, dev->iobase + DAS1800_CONTROL_A); /* enable fifo and triggering */ 1596a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(CVEN, dev->iobase + DAS1800_STATUS); /* enable conversions */ 1597a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1598a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 0; 1599a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1600a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1601a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* read analog input */ 16020a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ai_rinsn(struct comedi_device *dev, 16030a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 16040a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data) 1605a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1606a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int i, n; 1607a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int chan, range, aref, chan_range; 1608a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int timeout = 1000; 1609a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess short dpnt; 1610a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int conv_flags = 0; 1611a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long irq_flags; 1612a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1613a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* set up analog reference and unipolar / bipolar mode */ 1614a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess aref = CR_AREF(insn->chanspec); 1615a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess conv_flags |= UQEN; 1616a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (aref != AREF_DIFF) 1617a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess conv_flags |= SD; 1618a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (aref == AREF_COMMON) 1619a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess conv_flags |= CMEN; 1620a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* if a unipolar range was selected */ 1621a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (CR_RANGE(insn->chanspec) & UNIPOLAR) 1622a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess conv_flags |= UB; 1623a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1624a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(conv_flags, dev->iobase + DAS1800_CONTROL_C); /* software conversion enabled */ 1625a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(CVEN, dev->iobase + DAS1800_STATUS); /* enable conversions */ 1626a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(0x0, dev->iobase + DAS1800_CONTROL_A); /* reset fifo */ 1627a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(FFEN, dev->iobase + DAS1800_CONTROL_A); 1628a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1629a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess chan = CR_CHAN(insn->chanspec); 1630a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* mask of unipolar/bipolar bit from range */ 1631a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess range = CR_RANGE(insn->chanspec) & 0x3; 1632a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess chan_range = chan | (range << 8); 16335f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_lock_irqsave(&dev->spinlock, irq_flags); 1634a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(QRAM, dev->iobase + DAS1800_SELECT); /* select QRAM for baseAddress + 0x0 */ 1635a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(0x0, dev->iobase + DAS1800_QRAM_ADDRESS); /* set QRAM address start */ 1636a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outw(chan_range, dev->iobase + DAS1800_QRAM); 1637a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(0x0, dev->iobase + DAS1800_QRAM_ADDRESS); /*finish write to QRAM */ 1638a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(ADC, dev->iobase + DAS1800_SELECT); /* select ADC for baseAddress + 0x0 */ 1639a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1640a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess for (n = 0; n < insn->n; n++) { 1641a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* trigger conversion */ 1642a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(0, dev->iobase + DAS1800_FIFO); 1643a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess for (i = 0; i < timeout; i++) { 1644a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (inb(dev->iobase + DAS1800_STATUS) & FNE) 1645a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1646a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1647a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (i == timeout) { 1648a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess comedi_error(dev, "timeout"); 1649d18c5906d0914d911a13d342ff61a6bca6aff597Greg Kroah-Hartman n = -ETIME; 1650d18c5906d0914d911a13d342ff61a6bca6aff597Greg Kroah-Hartman goto exit; 1651a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1652a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess dpnt = inw(dev->iobase + DAS1800_FIFO); 1653a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* shift data to offset binary for bipolar ranges */ 1654a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if ((conv_flags & UB) == 0) 1655a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess dpnt += 1 << (thisboard->resolution - 1); 1656a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess data[n] = dpnt; 1657a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1658d18c5906d0914d911a13d342ff61a6bca6aff597Greg Kroah-Hartmanexit: 16595f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_unlock_irqrestore(&dev->spinlock, irq_flags); 1660a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1661a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return n; 1662a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1663a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1664a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* writes to an analog output channel */ 16650a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ao_winsn(struct comedi_device *dev, 16660a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 16670a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data) 1668a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1669a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int chan = CR_CHAN(insn->chanspec); 1670a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* int range = CR_RANGE(insn->chanspec); */ 1671a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int update_chan = thisboard->ao_n_chan - 1; 1672a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess short output; 1673a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long irq_flags; 1674a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1675a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* card expects two's complement data */ 1676a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess output = data[0] - (1 << (thisboard->resolution - 1)); 1677a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* if the write is to the 'update' channel, we need to remember its value */ 1678a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (chan == update_chan) 1679a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->ao_update_bits = output; 1680a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* write to channel */ 16815f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_lock_irqsave(&dev->spinlock, irq_flags); 1682a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(DAC(chan), dev->iobase + DAS1800_SELECT); /* select dac channel for baseAddress + 0x0 */ 1683a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outw(output, dev->iobase + DAS1800_DAC); 1684a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* now we need to write to 'update' channel to update all dac channels */ 1685a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (chan != update_chan) { 1686a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(DAC(update_chan), dev->iobase + DAS1800_SELECT); /* select 'update' channel for baseAddress + 0x0 */ 1687a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outw(devpriv->ao_update_bits, dev->iobase + DAS1800_DAC); 1688a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 16895f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_unlock_irqrestore(&dev->spinlock, irq_flags); 1690a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1691a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 1; 1692a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1693a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1694a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* reads from digital input channels */ 16950a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_di_rbits(struct comedi_device *dev, 16960a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 16970a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data) 1698a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1699a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1700a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess data[1] = inb(dev->iobase + DAS1800_DIGITAL) & 0xf; 1701a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess data[0] = 0; 1702a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1703a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 2; 1704a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1705a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1706a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* writes to digital output channels */ 17070a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_do_wbits(struct comedi_device *dev, 17080a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 17090a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data) 1710a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1711790c55415aa31f4c732729f94d2c3a54f7d3bfc2Bill Pemberton unsigned int wbits; 1712a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1713a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* only set bits that have been masked */ 1714a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess data[0] &= (1 << s->n_chan) - 1; 1715a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess wbits = devpriv->do_bits; 1716a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess wbits &= ~data[0]; 1717a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess wbits |= data[0] & data[1]; 1718a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->do_bits = wbits; 1719a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1720a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(devpriv->do_bits, dev->iobase + DAS1800_DIGITAL); 1721a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1722a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess data[1] = devpriv->do_bits; 1723a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1724a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 2; 1725a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1726a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1727a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* loads counters with divisor1, divisor2 from private structure */ 1728da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int das1800_set_frequency(struct comedi_device *dev) 1729a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1730a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int err = 0; 1731a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1732a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* counter 1, mode 2 */ 1733a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (i8254_load(dev->iobase + DAS1800_COUNTER, 0, 1, devpriv->divisor1, 17340a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral 2)) 1735a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1736a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* counter 2, mode 2 */ 1737a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (i8254_load(dev->iobase + DAS1800_COUNTER, 0, 2, devpriv->divisor2, 17380a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral 2)) 1739a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1740a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (err) 1741a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -1; 1742a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1743a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 0; 1744a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1745a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1746a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* converts requested conversion timing to timing compatible with 1747a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * hardware, used only when card is in 'burst mode' 1748a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess */ 1749a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessstatic unsigned int burst_convert_arg(unsigned int convert_arg, int round_mode) 1750a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1751a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int micro_sec; 1752a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1753a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* in burst mode, the maximum conversion time is 64 microseconds */ 1754a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (convert_arg > 64000) 1755a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess convert_arg = 64000; 1756a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1757a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* the conversion time must be an integral number of microseconds */ 1758a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch (round_mode) { 1759a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_ROUND_NEAREST: 1760a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 1761a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess micro_sec = (convert_arg + 500) / 1000; 1762a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1763a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_ROUND_DOWN: 1764a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess micro_sec = convert_arg / 1000; 1765a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1766a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_ROUND_UP: 1767a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess micro_sec = (convert_arg - 1) / 1000 + 1; 1768a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1769a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1770a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1771a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* return number of nanoseconds */ 1772a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return micro_sec * 1000; 1773a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1774a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1775a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* utility function that suggests a dma transfer size based on the conversion period 'ns' */ 1776da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic unsigned int suggest_transfer_size(struct comedi_cmd *cmd) 1777a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1778a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int size = DMA_BUF_SIZE; 1779a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton static const int sample_size = 2; /* size in bytes of one sample from board */ 1780a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton unsigned int fill_time = 300000000; /* target time in nanoseconds for filling dma buffer */ 1781a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton unsigned int max_size; /* maximum size we will allow for a transfer */ 1782a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1783a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* make dma buffer fill in 0.3 seconds for timed modes */ 1784a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch (cmd->scan_begin_src) { 1785a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case TRIG_FOLLOW: /* not in burst mode */ 1786a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->convert_src == TRIG_TIMER) 1787a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess size = (fill_time / cmd->convert_arg) * sample_size; 1788a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1789a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_TIMER: 1790a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess size = (fill_time / (cmd->scan_begin_arg * cmd->chanlist_len)) * 17910a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral sample_size; 1792a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1793a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 1794a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess size = DMA_BUF_SIZE; 1795a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1796a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1797a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1798a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* set a minimum and maximum size allowed */ 1799a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess max_size = DMA_BUF_SIZE; 1800a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* if we are taking limited number of conversions, limit transfer size to that */ 1801a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->stop_src == TRIG_COUNT && 18020a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd->stop_arg * cmd->chanlist_len * sample_size < max_size) 1803a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess max_size = cmd->stop_arg * cmd->chanlist_len * sample_size; 1804a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1805a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (size > max_size) 1806a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess size = max_size; 1807a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (size < sample_size) 1808a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess size = sample_size; 1809a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1810a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return size; 1811a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 181290f703d30dd3e0c16ff80f35e34e511385a05ad5Arun Thomas 181390f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_AUTHOR("Comedi http://www.comedi.org"); 181490f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_DESCRIPTION("Comedi low-level driver"); 181590f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_LICENSE("GPL"); 1816