das1800.c revision 1bf2ee4ea19d3ebeb8fe35c03dd44cb1d851e19f
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> 105a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#include "../comedidev.h" 106a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 107a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#include <linux/ioport.h> 108a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#include <asm/dma.h> 109a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 110a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#include "8253.h" 111a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#include "comedi_fc.h" 112a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 113a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* misc. defines */ 114a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton#define DAS1800_SIZE 16 /* uses 16 io addresses */ 115a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton#define FIFO_SIZE 1024 /* 1024 sample fifo */ 116a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton#define TIMER_BASE 200 /* 5 Mhz master clock */ 117a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton#define UNIPOLAR 0x4 /* bit that determines whether input range is uni/bipolar */ 118a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton#define DMA_BUF_SIZE 0x1ff00 /* size in bytes of dma buffers */ 119a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 120a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* Registers for the das1800 */ 121a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_FIFO 0x0 122a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_QRAM 0x0 123a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_DAC 0x0 124a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_SELECT 0x2 125a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define ADC 0x0 126a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define QRAM 0x1 127a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAC(a) (0x2 + a) 128a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_DIGITAL 0x3 129a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_CONTROL_A 0x4 130a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define FFEN 0x1 131a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define CGEN 0x4 132a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define CGSL 0x8 133a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define TGEN 0x10 134a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define TGSL 0x20 135a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define ATEN 0x80 136a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_CONTROL_B 0x5 137a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DMA_CH5 0x1 138a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DMA_CH6 0x2 139a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DMA_CH7 0x3 140a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DMA_CH5_CH6 0x5 141a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DMA_CH6_CH7 0x6 142a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DMA_CH7_CH5 0x7 143a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton#define DMA_ENABLED 0x3 /* mask used to determine if dma is enabled */ 144a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DMA_DUAL 0x4 145a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define IRQ3 0x8 146a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define IRQ5 0x10 147a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define IRQ7 0x18 148a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define IRQ10 0x28 149a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define IRQ11 0x30 150a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define IRQ15 0x38 151a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define FIMD 0x40 152a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_CONTROL_C 0X6 153a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define IPCLK 0x1 154a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define XPCLK 0x3 155a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define BMDE 0x4 156a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define CMEN 0x8 157a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define UQEN 0x10 158a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define SD 0x40 159a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define UB 0x80 160a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_STATUS 0x7 161a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* bits that prevent interrupt status bits (and CVEN) from being cleared on write */ 162a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define CLEAR_INTR_MASK (CVEN_MASK | 0x1f) 163a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define INT 0x1 164a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DMATC 0x2 165a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define CT0TC 0x8 166a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define OVF 0x10 167a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define FHF 0x20 168a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define FNE 0x40 169a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton#define CVEN_MASK 0x40 /* masks CVEN on write */ 170a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define CVEN 0x80 171a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_BURST_LENGTH 0x8 172a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_BURST_RATE 0x9 173a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_QRAM_ADDRESS 0xa 174a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess#define DAS1800_COUNTER 0xc 175a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 176a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton#define IOBASE2 0x400 /* offset of additional ioports used on 'ao' cards */ 177a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 178a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessenum { 179a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1701st, das1701st_da, das1702st, das1702st_da, das1702hr, 180a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1702hr_da, 181a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1701ao, das1702ao, das1801st, das1801st_da, das1802st, das1802st_da, 182a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1802hr, das1802hr_da, das1801hc, das1802hc, das1801ao, das1802ao 183a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess}; 184a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1850a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_attach(struct comedi_device *dev, 1860a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_devconfig *it); 187814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic int das1800_detach(struct comedi_device *dev); 188814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic int das1800_probe(struct comedi_device *dev); 1890a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_cancel(struct comedi_device *dev, 1900a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s); 19170265d24e3404fe798b6edd55a02016b1edb49d7Jiri Slabystatic irqreturn_t das1800_interrupt(int irq, void *d); 1920a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ai_poll(struct comedi_device *dev, 1930a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s); 194814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic void das1800_ai_handler(struct comedi_device *dev); 1950a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic void das1800_handle_dma(struct comedi_device *dev, 1960a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, unsigned int status); 1970a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic void das1800_flush_dma(struct comedi_device *dev, 1980a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s); 1990a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic void das1800_flush_dma_channel(struct comedi_device *dev, 2000a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 2010a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral unsigned int channel, uint16_t * buffer); 202814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic void das1800_handle_fifo_half_full(struct comedi_device *dev, 2030a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s); 204814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic void das1800_handle_fifo_not_empty(struct comedi_device *dev, 2050a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s); 2060a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ai_do_cmdtest(struct comedi_device *dev, 2070a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 2080a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_cmd *cmd); 2090a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ai_do_cmd(struct comedi_device *dev, 2100a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s); 2110a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ai_rinsn(struct comedi_device *dev, 2120a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 2130a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data); 2140a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ao_winsn(struct comedi_device *dev, 2150a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 2160a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data); 2170a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_di_rbits(struct comedi_device *dev, 2180a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 2190a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data); 2200a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_do_wbits(struct comedi_device *dev, 2210a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 2220a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data); 223814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pemberton 224814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic int das1800_set_frequency(struct comedi_device *dev); 225a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessstatic unsigned int burst_convert_arg(unsigned int convert_arg, int round_mode); 226814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic unsigned int suggest_transfer_size(struct comedi_cmd *cmd); 227a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 228a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* analog input ranges */ 2299ced1de69125b60f40127eddaa3be2a92bb0a1dfBill Pembertonstatic const struct comedi_lrange range_ai_das1801 = { 230a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 8, 231a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 2320a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(-5, 5), 2330a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(-1, 1), 2340a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(-0.1, 0.1), 2350a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(-0.02, 0.02), 2360a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(0, 5), 2370a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(0, 1), 2380a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(0, 0.1), 2390a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(0, 0.02), 2400a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral } 241a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess}; 242a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 2439ced1de69125b60f40127eddaa3be2a92bb0a1dfBill Pembertonstatic const struct comedi_lrange range_ai_das1802 = { 244a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 8, 245a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 2460a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(-10, 10), 2470a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(-5, 5), 2480a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(-2.5, 2.5), 2490a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(-1.25, 1.25), 2500a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(0, 10), 2510a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(0, 5), 2520a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(0, 2.5), 2530a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(0, 1.25), 2540a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral } 255a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess}; 256a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 257ce422cf3569444116d7d826b274bd59cc34d3b28Bill Pembertonstruct das1800_board { 258a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess const char *name; 259a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int ai_speed; /* max conversion period in nanoseconds */ 260a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int resolution; /* bits of ai resolution */ 261a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int qram_len; /* length of card's channel / gain queue */ 262a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int common; /* supports AREF_COMMON flag */ 263a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int do_n_chan; /* number of digital output channels */ 264a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int ao_ability; /* 0 == no analog out, 1 == basic analog out, 2 == waveform analog out */ 265a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int ao_n_chan; /* number of analog out channels */ 2669ced1de69125b60f40127eddaa3be2a92bb0a1dfBill Pemberton const struct comedi_lrange *range_ai; /* available input ranges */ 267ce422cf3569444116d7d826b274bd59cc34d3b28Bill Pemberton}; 268a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 269a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* Warning: the maximum conversion speeds listed below are 270a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * not always achievable depending on board setup (see 271a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * user manual.) 272a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess */ 273ce422cf3569444116d7d826b274bd59cc34d3b28Bill Pembertonstatic const struct das1800_board das1800_boards[] = { 274a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 2750a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1701st", 2760a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 6250, 2770a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 2780a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 2790a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 2800a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 2810a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 0, 2820a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 0, 2830a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1801, 2840a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 285a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 2860a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1701st-da", 2870a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 6250, 2880a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 2890a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 2900a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 2910a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 2920a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 1, 2930a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 4, 2940a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1801, 2950a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 296a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 2970a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1702st", 2980a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 6250, 2990a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 3000a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 3010a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 3020a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 3030a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 0, 3040a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 0, 3050a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 3060a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 307a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 3080a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1702st-da", 3090a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 6250, 3100a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 3110a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 3120a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 3130a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 3140a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 1, 3150a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 4, 3160a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 3170a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 318a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 3190a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1702hr", 3200a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 20000, 3210a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 16, 3220a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 3230a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 3240a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 3250a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 0, 3260a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 0, 3270a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 3280a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 329a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 3300a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1702hr-da", 3310a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 20000, 3320a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 16, 3330a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 3340a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 3350a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 3360a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 1, 3370a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 2, 3380a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 3390a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 340a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 3410a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1701ao", 3420a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 6250, 3430a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 3440a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 3450a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 3460a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 3470a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 2, 3480a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 2, 3490a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1801, 3500a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 351a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 3520a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1702ao", 3530a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 6250, 3540a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 3550a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 3560a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 3570a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 3580a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 2, 3590a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 2, 3600a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 3610a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 362a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 3630a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1801st", 3640a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 3000, 3650a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 3660a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 3670a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 3680a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 3690a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 0, 3700a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 0, 3710a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1801, 3720a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 373a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 3740a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1801st-da", 3750a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 3000, 3760a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 3770a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 3780a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 3790a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 3800a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 0, 3810a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 4, 3820a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1801, 3830a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 384a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 3850a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1802st", 3860a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 3000, 3870a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 3880a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 3890a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 3900a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 3910a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 0, 3920a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 0, 3930a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 3940a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 395a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 3960a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1802st-da", 3970a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 3000, 3980a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 3990a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 4000a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 4010a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 4020a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 1, 4030a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 4, 4040a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 4050a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 406a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 4070a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1802hr", 4080a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 10000, 4090a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 16, 4100a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 4110a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 4120a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 4130a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 0, 4140a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 0, 4150a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 4160a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 417a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 4180a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1802hr-da", 4190a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 10000, 4200a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 16, 4210a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 4220a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 4230a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 4240a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 1, 4250a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 2, 4260a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 4270a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 428a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 4290a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1801hc", 4300a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 3000, 4310a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 4320a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 64, 4330a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 0, 4340a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 8, 4350a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 1, 4360a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 2, 4370a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1801, 4380a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 439a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 4400a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1802hc", 4410a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 3000, 4420a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 4430a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 64, 4440a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 0, 4450a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 8, 4460a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 1, 4470a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 2, 4480a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 4490a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 450a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 4510a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1801ao", 4520a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 3000, 4530a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 4540a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 4550a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 4560a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 4570a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 2, 4580a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 2, 4590a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1801, 4600a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 461a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 4620a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "das-1802ao", 4630a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ai_speed = 3000, 4640a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .resolution = 12, 4650a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .qram_len = 256, 4660a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .common = 1, 4670a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .do_n_chan = 4, 4680a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_ability = 2, 4690a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .ao_n_chan = 2, 4700a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .range_ai = &range_ai_das1802, 4710a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 472a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess}; 473a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 474a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* 475a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * Useful for shorthand access to the particular board structure 476a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess */ 477ce422cf3569444116d7d826b274bd59cc34d3b28Bill Pemberton#define thisboard ((const struct das1800_board *)dev->board_ptr) 478a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 4790c5a144d730a68967dfb3f8163260a142e3282e3Bill Pembertonstruct das1800_private { 480a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess volatile unsigned int count; /* number of data points left to be taken */ 481a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int divisor1; /* value to load into board's counter 1 for timed conversions */ 482a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int divisor2; /* value to load into board's counter 2 for timed conversions */ 483a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int do_bits; /* digital output bits */ 484a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int irq_dma_bits; /* bits for control register b */ 485a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* dma bits for control register b, stored so that dma can be 486a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * turned on and off */ 487a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int dma_bits; 488a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int dma0; /* dma channels used */ 489a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int dma1; 490a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess volatile unsigned int dma_current; /* dma channel currently in use */ 491a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess uint16_t *ai_buf0; /* pointers to dma buffers */ 492a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess uint16_t *ai_buf1; 493a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess uint16_t *dma_current_buf; /* pointer to dma buffer currently being used */ 494a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int dma_transfer_size; /* size of transfer currently used, in bytes */ 495a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long iobase2; /* secondary io address used for analog out on 'ao' boards */ 496a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess short ao_update_bits; /* remembers the last write to the 'update' dac */ 4970c5a144d730a68967dfb3f8163260a142e3282e3Bill Pemberton}; 498a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 4990c5a144d730a68967dfb3f8163260a142e3282e3Bill Pemberton#define devpriv ((struct das1800_private *)dev->private) 500a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 501a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* analog out range for boards with basic analog out */ 5029ced1de69125b60f40127eddaa3be2a92bb0a1dfBill Pembertonstatic const struct comedi_lrange range_ao_1 = { 503a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1, 504a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 5050a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral RANGE(-10, 10), 5060a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral } 507a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess}; 508a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 509a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* analog out range for 'ao' boards */ 510a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* 5119ced1de69125b60f40127eddaa3be2a92bb0a1dfBill Pembertonstatic const struct comedi_lrange range_ao_2 = { 512a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 2, 513a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess { 514a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess RANGE(-10, 10), 515a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess RANGE(-5, 5), 516a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 517a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess}; 518a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess*/ 519a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 520139dfbdfacb02e3ef3df936d2fabd1ad5f14ea88Bill Pembertonstatic struct comedi_driver driver_das1800 = { 52168c3dbff9fc9f25872408d0e95980d41733d48d0Bill Pemberton .driver_name = "das1800", 52268c3dbff9fc9f25872408d0e95980d41733d48d0Bill Pemberton .module = THIS_MODULE, 52368c3dbff9fc9f25872408d0e95980d41733d48d0Bill Pemberton .attach = das1800_attach, 52468c3dbff9fc9f25872408d0e95980d41733d48d0Bill Pemberton .detach = das1800_detach, 5258629efa4cbf6f89a54a85af4b8bc31762af01800Bill Pemberton .num_names = ARRAY_SIZE(das1800_boards), 52668c3dbff9fc9f25872408d0e95980d41733d48d0Bill Pemberton .board_name = &das1800_boards[0].name, 52768c3dbff9fc9f25872408d0e95980d41733d48d0Bill Pemberton .offset = sizeof(struct das1800_board), 528a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess}; 529a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 530a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* 531a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * A convenient macro that defines init_module() and cleanup_module(), 532a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * as necessary. 533a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess */ 534a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori HessCOMEDI_INITCLEANUP(driver_das1800); 535a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 536da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int das1800_init_dma(struct comedi_device *dev, unsigned int dma0, 5370a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral unsigned int dma1) 538a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 539a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long flags; 540a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 541a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* need an irq to do dma */ 542a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dev->irq && dma0) { 543a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* encode dma0 and dma1 into 2 digit hexadecimal for switch */ 544a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch ((dma0 & 0x7) | (dma1 << 4)) { 545a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case 0x5: /* dma0 == 5 */ 546a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_bits |= DMA_CH5; 547a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 548a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case 0x6: /* dma0 == 6 */ 549a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_bits |= DMA_CH6; 550a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 551a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case 0x7: /* dma0 == 7 */ 552a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_bits |= DMA_CH7; 553a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 554a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case 0x65: /* dma0 == 5, dma1 == 6 */ 555a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_bits |= DMA_CH5_CH6; 556a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 557a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case 0x76: /* dma0 == 6, dma1 == 7 */ 558a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_bits |= DMA_CH6_CH7; 559a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 560a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case 0x57: /* dma0 == 7, dma1 == 5 */ 561a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_bits |= DMA_CH7_CH5; 562a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 563a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 564a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" only supports dma channels 5 through 7\n" 5650a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral " Dual dma only allows the following combinations:\n" 5660a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral " dma 5,6 / 6,7 / or 7,5\n"); 567a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -EINVAL; 568a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 569a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 570a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (request_dma(dma0, driver_das1800.driver_name)) { 571a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" failed to allocate dma channel %i\n", dma0); 572a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -EINVAL; 573a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 574a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma0 = dma0; 575a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current = dma0; 576a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dma1) { 577a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (request_dma(dma1, driver_das1800.driver_name)) { 578a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" failed to allocate dma channel %i\n", 5790a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral dma1); 580a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -EINVAL; 581a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 582a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma1 = dma1; 583a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 584a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->ai_buf0 = kmalloc(DMA_BUF_SIZE, GFP_KERNEL | GFP_DMA); 585a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->ai_buf0 == NULL) 586a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -ENOMEM; 587a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current_buf = devpriv->ai_buf0; 588a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dma1) { 589a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->ai_buf1 = 5900a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral kmalloc(DMA_BUF_SIZE, GFP_KERNEL | GFP_DMA); 591a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->ai_buf1 == NULL) 592a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -ENOMEM; 593a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 594a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess flags = claim_dma_lock(); 595a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess disable_dma(devpriv->dma0); 596a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess set_dma_mode(devpriv->dma0, DMA_MODE_READ); 597a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dma1) { 598a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess disable_dma(devpriv->dma1); 599a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess set_dma_mode(devpriv->dma1, DMA_MODE_READ); 600a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 601a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess release_dma_lock(flags); 602a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 603a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 0; 604a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 605a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 6060a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_attach(struct comedi_device *dev, 6070a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_devconfig *it) 608a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 60934c43922e62708d45e9660eee4b4f1fb7b4bf2c7Bill Pemberton struct comedi_subdevice *s; 610a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long iobase = it->options[0]; 611a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int irq = it->options[1]; 612a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int dma0 = it->options[2]; 613a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int dma1 = it->options[3]; 614a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long iobase2; 615a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int board; 616a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int retval; 617a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 618a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* allocate and initialize dev->private */ 6190c5a144d730a68967dfb3f8163260a142e3282e3Bill Pemberton if (alloc_private(dev, sizeof(struct das1800_private)) < 0) 620a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -ENOMEM; 621a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 622a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk("comedi%d: %s: io 0x%lx", dev->minor, driver_das1800.driver_name, 6230a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral iobase); 624a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (irq) { 625a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(", irq %u", irq); 626a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dma0) { 627a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(", dma %u", dma0); 628a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dma1) 629a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" and %u", dma1); 630a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 631a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 632a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk("\n"); 633a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 634a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (iobase == 0) { 635a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" io base address required\n"); 636a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -EINVAL; 637a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 638a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 639a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* check if io addresses are available */ 640a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!request_region(iobase, DAS1800_SIZE, driver_das1800.driver_name)) { 6410a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral printk 6420a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (" I/O port conflict: failed to allocate ports 0x%lx to 0x%lx\n", 6430a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral iobase, iobase + DAS1800_SIZE - 1); 644a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -EIO; 645a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 646a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess dev->iobase = iobase; 647a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 648a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess board = das1800_probe(dev); 649a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (board < 0) { 650a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" unable to determine board type\n"); 651a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -ENODEV; 652a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 653a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 654a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess dev->board_ptr = das1800_boards + board; 655a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess dev->board_name = thisboard->name; 656a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 657a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* if it is an 'ao' board with fancy analog out then we need extra io ports */ 658a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (thisboard->ao_ability == 2) { 659a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess iobase2 = iobase + IOBASE2; 660a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!request_region(iobase2, DAS1800_SIZE, 6610a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral driver_das1800.driver_name)) { 6620a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral printk 6630a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (" I/O port conflict: failed to allocate ports 0x%lx to 0x%lx\n", 6640a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral iobase2, iobase2 + DAS1800_SIZE - 1); 665a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -EIO; 666a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 667a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->iobase2 = iobase2; 668a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 669a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 670a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* grab our IRQ */ 671a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (irq) { 6725f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman if (request_irq(irq, das1800_interrupt, 0, 673a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess driver_das1800.driver_name, dev)) { 674a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" unable to allocate irq %u\n", irq); 675a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -EINVAL; 676a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 677a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 678a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess dev->irq = irq; 679a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 680a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* set bits that tell card which irq to use */ 681a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch (irq) { 682a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 0: 683a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 684a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 3: 685a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits |= 0x8; 686a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 687a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 5: 688a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits |= 0x10; 689a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 690a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 7: 691a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits |= 0x18; 692a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 693a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 10: 694a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits |= 0x28; 695a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 696a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 11: 697a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits |= 0x30; 698a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 699a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 15: 700a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits |= 0x38; 701a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 702a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 703a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" irq out of range\n"); 704a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -EINVAL; 705a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 706a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 707a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 708a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess retval = das1800_init_dma(dev, dma0, dma1); 709a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (retval < 0) 710a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return retval; 711a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 712a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->ai_buf0 == NULL) { 713a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->ai_buf0 = 7140a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral kmalloc(FIFO_SIZE * sizeof(uint16_t), GFP_KERNEL); 715a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->ai_buf0 == NULL) 716a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -ENOMEM; 717a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 718a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 719a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (alloc_subdevices(dev, 4) < 0) 720a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -ENOMEM; 721a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 722a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* analog input subdevice */ 723a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s = dev->subdevices + 0; 724a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess dev->read_subdev = s; 725a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->type = COMEDI_SUBD_AI; 726a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->subdev_flags = SDF_READABLE | SDF_DIFF | SDF_GROUND | SDF_CMD_READ; 727a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (thisboard->common) 728a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->subdev_flags |= SDF_COMMON; 729a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->n_chan = thisboard->qram_len; 730a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->len_chanlist = thisboard->qram_len; 731a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->maxdata = (1 << thisboard->resolution) - 1; 732a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->range_table = thisboard->range_ai; 733a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->do_cmd = das1800_ai_do_cmd; 734a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->do_cmdtest = das1800_ai_do_cmdtest; 735a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->insn_read = das1800_ai_rinsn; 736a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->poll = das1800_ai_poll; 737a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->cancel = das1800_cancel; 738a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 739a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* analog out */ 740a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s = dev->subdevices + 1; 741a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (thisboard->ao_ability == 1) { 742a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->type = COMEDI_SUBD_AO; 743a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->subdev_flags = SDF_WRITABLE; 744a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->n_chan = thisboard->ao_n_chan; 745a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->maxdata = (1 << thisboard->resolution) - 1; 746a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->range_table = &range_ao_1; 747a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->insn_write = das1800_ao_winsn; 748a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } else { 749a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->type = COMEDI_SUBD_UNUSED; 750a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 751a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 752a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* di */ 753a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s = dev->subdevices + 2; 754a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->type = COMEDI_SUBD_DI; 755a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->subdev_flags = SDF_READABLE; 756a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->n_chan = 4; 757a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->maxdata = 1; 758a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->range_table = &range_digital; 759a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->insn_bits = das1800_di_rbits; 760a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 761a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* do */ 762a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s = dev->subdevices + 3; 763a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->type = COMEDI_SUBD_DO; 764a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->subdev_flags = SDF_WRITABLE | SDF_READABLE; 765a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->n_chan = thisboard->do_n_chan; 766a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->maxdata = 1; 767a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->range_table = &range_digital; 768a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess s->insn_bits = das1800_do_wbits; 769a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 770a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_cancel(dev, dev->read_subdev); 771a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 772a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* initialize digital out channels */ 773a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(devpriv->do_bits, dev->iobase + DAS1800_DIGITAL); 774a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 775a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* initialize analog out channels */ 776a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (thisboard->ao_ability == 1) { 777a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* select 'update' dac channel for baseAddress + 0x0 */ 778a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(DAC(thisboard->ao_n_chan - 1), 7790a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral dev->iobase + DAS1800_SELECT); 780a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outw(devpriv->ao_update_bits, dev->iobase + DAS1800_DAC); 781a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 782a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 783a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 0; 784a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess}; 785a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 786da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int das1800_detach(struct comedi_device *dev) 787a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 788a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* only free stuff if it has been allocated by _attach */ 789a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dev->iobase) 790a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess release_region(dev->iobase, DAS1800_SIZE); 791a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dev->irq) 7925f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman free_irq(dev->irq, dev); 793a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dev->private) { 794a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->iobase2) 795a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess release_region(devpriv->iobase2, DAS1800_SIZE); 796a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->dma0) 797a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess free_dma(devpriv->dma0); 798a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->dma1) 799a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess free_dma(devpriv->dma1); 8001bf2ee4ea19d3ebeb8fe35c03dd44cb1d851e19fDavid Binderman kfree(devpriv->ai_buf0); 8011bf2ee4ea19d3ebeb8fe35c03dd44cb1d851e19fDavid Binderman kfree(devpriv->ai_buf1); 802a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 803a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 804a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk("comedi%d: %s: remove\n", dev->minor, 8050a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral driver_das1800.driver_name); 806a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 807a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 0; 808a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess}; 809a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 810a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* probes and checks das-1800 series board type 811a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess */ 812da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int das1800_probe(struct comedi_device *dev) 813a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 814a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int id; 815a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int board; 816a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 817a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess id = (inb(dev->iobase + DAS1800_DIGITAL) >> 4) & 0xf; /* get id bits */ 8180a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral board = ((struct das1800_board *)dev->board_ptr) - das1800_boards; 819a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 820a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch (id) { 821a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 0x3: 822a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (board == das1801st_da || board == das1802st_da || 8230a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral board == das1701st_da || board == das1702st_da) { 824a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" Board model: %s\n", 8250a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral das1800_boards[board].name); 826a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return board; 827a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 8280a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral printk 8290a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (" Board model (probed, not recommended): das-1800st-da series\n"); 830a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return das1801st; 831a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 832a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 0x4: 833a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (board == das1802hr_da || board == das1702hr_da) { 834a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" Board model: %s\n", 8350a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral das1800_boards[board].name); 836a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return board; 837a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 8380a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral printk 8390a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (" Board model (probed, not recommended): das-1802hr-da\n"); 840a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return das1802hr; 841a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 842a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 0x5: 843a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (board == das1801ao || board == das1802ao || 8440a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral board == das1701ao || board == das1702ao) { 845a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" Board model: %s\n", 8460a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral das1800_boards[board].name); 847a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return board; 848a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 8490a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral printk 8500a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (" Board model (probed, not recommended): das-1800ao series\n"); 851a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return das1801ao; 852a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 853a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 0x6: 854a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (board == das1802hr || board == das1702hr) { 855a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" Board model: %s\n", 8560a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral das1800_boards[board].name); 857a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return board; 858a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 859a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" Board model (probed, not recommended): das-1802hr\n"); 860a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return das1802hr; 861a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 862a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 0x7: 863a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (board == das1801st || board == das1802st || 8640a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral board == das1701st || board == das1702st) { 865a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" Board model: %s\n", 8660a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral das1800_boards[board].name); 867a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return board; 868a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 8690a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral printk 8700a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (" Board model (probed, not recommended): das-1800st series\n"); 871a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return das1801st; 872a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 873a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case 0x8: 874a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (board == das1801hc || board == das1802hc) { 875a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess printk(" Board model: %s\n", 8760a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral das1800_boards[board].name); 877a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return board; 878a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 8790a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral printk 8800a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (" Board model (probed, not recommended): das-1800hc series\n"); 881a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return das1801hc; 882a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 883a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 8840a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral printk 8850a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (" Board model: probe returned 0x%x (unknown, please report)\n", 8860a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral id); 887a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return board; 888a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 889a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 890a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -1; 891a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 892a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 8930a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ai_poll(struct comedi_device *dev, 8940a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s) 895a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 896a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long flags; 897a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 898a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* prevent race with interrupt handler */ 8995f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_lock_irqsave(&dev->spinlock, flags); 900a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_ai_handler(dev); 9015f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_unlock_irqrestore(&dev->spinlock, flags); 902a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 903a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return s->async->buf_write_count - s->async->buf_read_count; 904a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 905a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 90670265d24e3404fe798b6edd55a02016b1edb49d7Jiri Slabystatic irqreturn_t das1800_interrupt(int irq, void *d) 907a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 90871b5f4f11971dea972832ad63a994c7e5b45db6bBill Pemberton struct comedi_device *dev = d; 909a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int status; 910a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 911a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dev->attached == 0) { 912a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess comedi_error(dev, "premature interrupt"); 913a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return IRQ_HANDLED; 914a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 915a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 916a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* Prevent race with das1800_ai_poll() on multi processor systems. 917a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * Also protects indirect addressing in das1800_ai_handler */ 918a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess spin_lock(&dev->spinlock); 919a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess status = inb(dev->iobase + DAS1800_STATUS); 920a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 921a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* if interrupt was not caused by das-1800 */ 922a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!(status & INT)) { 923a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess spin_unlock(&dev->spinlock); 924a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return IRQ_NONE; 925a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 926a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* clear the interrupt status bit INT */ 927a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(CLEAR_INTR_MASK & ~INT, dev->iobase + DAS1800_STATUS); 928a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* handle interrupt */ 929a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_ai_handler(dev); 930a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 931a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess spin_unlock(&dev->spinlock); 932a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return IRQ_HANDLED; 933a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 934a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 935a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* the guts of the interrupt handler, that is shared with das1800_ai_poll */ 936da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic void das1800_ai_handler(struct comedi_device *dev) 937a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 93834c43922e62708d45e9660eee4b4f1fb7b4bf2c7Bill Pemberton struct comedi_subdevice *s = dev->subdevices + 0; /* analog input subdevice */ 939d163679ceec20c50f9aee880fa76c0c1185244a8Bill Pemberton struct comedi_async *async = s->async; 940ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd *cmd = &async->cmd; 941a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int status = inb(dev->iobase + DAS1800_STATUS); 942a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 943a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess async->events = 0; 944a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* select adc for base address + 0 */ 945a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(ADC, dev->iobase + DAS1800_SELECT); 946a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* dma buffer full */ 947a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->irq_dma_bits & DMA_ENABLED) { 948a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* look for data from dma transfer even if dma terminal count hasn't happened yet */ 949a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_handle_dma(dev, s, status); 950a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton } else if (status & FHF) { /* if fifo half full */ 951a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_handle_fifo_half_full(dev, s); 952a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton } else if (status & FNE) { /* if fifo not empty */ 953a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_handle_fifo_not_empty(dev, s); 954a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 955a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 956a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess async->events |= COMEDI_CB_BLOCK; 957a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* if the card's fifo has overflowed */ 958a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (status & OVF) { 959a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* clear OVF interrupt bit */ 960a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(CLEAR_INTR_MASK & ~OVF, dev->iobase + DAS1800_STATUS); 961a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess comedi_error(dev, "DAS1800 FIFO overflow"); 962a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_cancel(dev, s); 963a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA; 964a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess comedi_event(dev, s); 965a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 966a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 967a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* stop taking data if appropriate */ 968a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* stop_src TRIG_EXT */ 969a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (status & CT0TC) { 970a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* clear CT0TC interrupt bit */ 971a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(CLEAR_INTR_MASK & ~CT0TC, dev->iobase + DAS1800_STATUS); 972a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* make sure we get all remaining data from board before quitting */ 973a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->irq_dma_bits & DMA_ENABLED) 974a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_flush_dma(dev, s); 975a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess else 976a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_handle_fifo_not_empty(dev, s); 977a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_cancel(dev, s); /* disable hardware conversions */ 978a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess async->events |= COMEDI_CB_EOA; 979a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton } else if (cmd->stop_src == TRIG_COUNT && devpriv->count == 0) { /* stop_src TRIG_COUNT */ 980a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_cancel(dev, s); /* disable hardware conversions */ 981a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess async->events |= COMEDI_CB_EOA; 982a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 983a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 984a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess comedi_event(dev, s); 985a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 986a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 987a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 988a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 9890a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic void das1800_handle_dma(struct comedi_device *dev, 9900a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, unsigned int status) 991a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 992a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long flags; 993a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess const int dual_dma = devpriv->irq_dma_bits & DMA_DUAL; 994a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 995a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess flags = claim_dma_lock(); 996a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_flush_dma_channel(dev, s, devpriv->dma_current, 9970a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral devpriv->dma_current_buf); 998a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* re-enable dma channel */ 999a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess set_dma_addr(devpriv->dma_current, 10000a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral virt_to_bus(devpriv->dma_current_buf)); 1001a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess set_dma_count(devpriv->dma_current, devpriv->dma_transfer_size); 1002a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess enable_dma(devpriv->dma_current); 1003a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess release_dma_lock(flags); 1004a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1005a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (status & DMATC) { 1006a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* clear DMATC interrupt bit */ 1007a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(CLEAR_INTR_MASK & ~DMATC, dev->iobase + DAS1800_STATUS); 1008a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* switch dma channels for next time, if appropriate */ 1009a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dual_dma) { 1010a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* read data from the other channel next time */ 1011a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->dma_current == devpriv->dma0) { 1012a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current = devpriv->dma1; 1013a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current_buf = devpriv->ai_buf1; 1014a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } else { 1015a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current = devpriv->dma0; 1016a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current_buf = devpriv->ai_buf0; 1017a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1018a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1019a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1020a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1021a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 1022a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1023a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1024da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic inline uint16_t munge_bipolar_sample(const struct comedi_device *dev, 10250a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral uint16_t sample) 1026a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1027a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess sample += 1 << (thisboard->resolution - 1); 1028a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return sample; 1029a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1030a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 10310a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic void munge_data(struct comedi_device *dev, uint16_t * array, 10320a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral unsigned int num_elements) 1033a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1034a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int i; 1035a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int unipolar; 1036a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1037a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* see if card is using a unipolar or bipolar range so we can munge data correctly */ 1038a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unipolar = inb(dev->iobase + DAS1800_CONTROL_C) & UB; 1039a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1040a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* convert to unsigned type if we are in a bipolar mode */ 1041a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!unipolar) { 1042a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess for (i = 0; i < num_elements; i++) { 1043a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess array[i] = munge_bipolar_sample(dev, array[i]); 1044a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1045a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1046a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1047a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1048a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* Utility function used by das1800_flush_dma() and das1800_handle_dma(). 1049a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * Assumes dma lock is held */ 10500a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic void das1800_flush_dma_channel(struct comedi_device *dev, 10510a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 10520a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral unsigned int channel, uint16_t * buffer) 1053a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1054a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int num_bytes, num_samples; 1055ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd *cmd = &s->async->cmd; 1056a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1057a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess disable_dma(channel); 1058a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1059a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* clear flip-flop to make sure 2-byte registers 1060a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * get set correctly */ 1061a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess clear_dma_ff(channel); 1062a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1063a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* figure out how many points to read */ 1064a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess num_bytes = devpriv->dma_transfer_size - get_dma_residue(channel); 1065790c55415aa31f4c732729f94d2c3a54f7d3bfc2Bill Pemberton num_samples = num_bytes / sizeof(short); 1066a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1067a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* if we only need some of the points */ 1068a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->stop_src == TRIG_COUNT && devpriv->count < num_samples) 1069a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess num_samples = devpriv->count; 1070a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1071a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess munge_data(dev, buffer, num_samples); 1072a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cfc_write_array_to_buffer(s, buffer, num_bytes); 1073a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (s->async->cmd.stop_src == TRIG_COUNT) 1074a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->count -= num_samples; 1075a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1076a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 1077a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1078a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1079a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* flushes remaining data from board when external trigger has stopped aquisition 1080a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * and we are using dma transfers */ 10810a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic void das1800_flush_dma(struct comedi_device *dev, 10820a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s) 1083a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1084a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long flags; 1085a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess const int dual_dma = devpriv->irq_dma_bits & DMA_DUAL; 1086a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1087a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess flags = claim_dma_lock(); 1088a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_flush_dma_channel(dev, s, devpriv->dma_current, 10890a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral devpriv->dma_current_buf); 1090a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1091a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dual_dma) { 1092a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* switch to other channel and flush it */ 1093a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->dma_current == devpriv->dma0) { 1094a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current = devpriv->dma1; 1095a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current_buf = devpriv->ai_buf1; 1096a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } else { 1097a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current = devpriv->dma0; 1098a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current_buf = devpriv->ai_buf0; 1099a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1100a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_flush_dma_channel(dev, s, devpriv->dma_current, 11010a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral devpriv->dma_current_buf); 1102a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1103a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1104a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess release_dma_lock(flags); 1105a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1106a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* get any remaining samples in fifo */ 1107a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_handle_fifo_not_empty(dev, s); 1108a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1109a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 1110a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1111a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1112da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic void das1800_handle_fifo_half_full(struct comedi_device *dev, 11130a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s) 1114a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1115a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int numPoints = 0; /* number of points to read */ 1116ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd *cmd = &s->async->cmd; 1117a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1118a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess numPoints = FIFO_SIZE / 2; 1119a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* if we only need some of the points */ 1120a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->stop_src == TRIG_COUNT && devpriv->count < numPoints) 1121a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess numPoints = devpriv->count; 1122a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess insw(dev->iobase + DAS1800_FIFO, devpriv->ai_buf0, numPoints); 1123a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess munge_data(dev, devpriv->ai_buf0, numPoints); 1124a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cfc_write_array_to_buffer(s, devpriv->ai_buf0, 11250a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral numPoints * sizeof(devpriv->ai_buf0[0])); 1126a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->stop_src == TRIG_COUNT) 1127a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->count -= numPoints; 1128a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 1129a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1130a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1131da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic void das1800_handle_fifo_not_empty(struct comedi_device *dev, 11320a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s) 1133a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1134790c55415aa31f4c732729f94d2c3a54f7d3bfc2Bill Pemberton short dpnt; 1135a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int unipolar; 1136ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd *cmd = &s->async->cmd; 1137a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1138a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unipolar = inb(dev->iobase + DAS1800_CONTROL_C) & UB; 1139a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1140a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess while (inb(dev->iobase + DAS1800_STATUS) & FNE) { 1141a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->stop_src == TRIG_COUNT && devpriv->count == 0) 1142a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1143a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess dpnt = inw(dev->iobase + DAS1800_FIFO); 1144a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* convert to unsigned type if we are in a bipolar mode */ 1145a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!unipolar) ; 1146a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess dpnt = munge_bipolar_sample(dev, dpnt); 1147a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cfc_write_to_buffer(s, dpnt); 1148a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->stop_src == TRIG_COUNT) 1149a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->count--; 1150a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1151a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1152a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 1153a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1154a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1155da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int das1800_cancel(struct comedi_device *dev, struct comedi_subdevice *s) 1156a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1157a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(0x0, dev->iobase + DAS1800_STATUS); /* disable conversions */ 1158a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(0x0, dev->iobase + DAS1800_CONTROL_B); /* disable interrupts and dma */ 1159a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(0x0, dev->iobase + DAS1800_CONTROL_A); /* disable and clear fifo and stop triggering */ 1160a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->dma0) 1161a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess disable_dma(devpriv->dma0); 1162a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (devpriv->dma1) 1163a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess disable_dma(devpriv->dma1); 1164a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 0; 1165a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1166a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1167a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* test analog input cmd */ 11680a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ai_do_cmdtest(struct comedi_device *dev, 11690a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 11700a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_cmd *cmd) 1171a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1172a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int err = 0; 1173a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int tmp; 1174a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int tmp_arg; 1175a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int i; 1176a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int unipolar; 1177a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1178a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* step 1: make sure trigger sources are trivially valid */ 1179a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1180a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess tmp = cmd->start_src; 1181a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->start_src &= TRIG_NOW | TRIG_EXT; 1182a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!cmd->start_src || tmp != cmd->start_src) 1183a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1184a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1185a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess tmp = cmd->scan_begin_src; 1186a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->scan_begin_src &= TRIG_FOLLOW | TRIG_TIMER | TRIG_EXT; 1187a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) 1188a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1189a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1190a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess tmp = cmd->convert_src; 1191a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->convert_src &= TRIG_TIMER | TRIG_EXT; 1192a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!cmd->convert_src || tmp != cmd->convert_src) 1193a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1194a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1195a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess tmp = cmd->scan_end_src; 1196a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->scan_end_src &= TRIG_COUNT; 1197a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!cmd->scan_end_src || tmp != cmd->scan_end_src) 1198a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1199a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1200a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess tmp = cmd->stop_src; 1201a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->stop_src &= TRIG_COUNT | TRIG_EXT | TRIG_NONE; 1202a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!cmd->stop_src || tmp != cmd->stop_src) 1203a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1204a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1205a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (err) 1206a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 1; 1207a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1208a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* step 2: make sure trigger sources are unique and mutually compatible */ 1209a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1210a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* uniqueness check */ 1211a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->start_src != TRIG_NOW && cmd->start_src != TRIG_EXT) 1212a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1213a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->scan_begin_src != TRIG_FOLLOW && 12140a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd->scan_begin_src != TRIG_TIMER && 12150a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd->scan_begin_src != TRIG_EXT) 1216a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1217a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->convert_src != TRIG_TIMER && cmd->convert_src != TRIG_EXT) 1218a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1219a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->stop_src != TRIG_COUNT && 12200a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd->stop_src != TRIG_NONE && cmd->stop_src != TRIG_EXT) 1221a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1222a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* compatibility check */ 1223a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->scan_begin_src != TRIG_FOLLOW && 12240a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd->convert_src != TRIG_TIMER) 1225a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1226a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1227a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (err) 1228a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 2; 1229a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1230a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* step 3: make sure arguments are trivially compatible */ 1231a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1232a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->start_arg != 0) { 1233a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->start_arg = 0; 1234a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1235a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1236a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->convert_src == TRIG_TIMER) { 1237a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->convert_arg < thisboard->ai_speed) { 1238a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->convert_arg = thisboard->ai_speed; 1239a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1240a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1241a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1242a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!cmd->chanlist_len) { 1243a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->chanlist_len = 1; 1244a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1245a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1246a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->scan_end_arg != cmd->chanlist_len) { 1247a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->scan_end_arg = cmd->chanlist_len; 1248a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1249a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1250a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1251a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch (cmd->stop_src) { 1252a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_COUNT: 1253a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!cmd->stop_arg) { 1254a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->stop_arg = 1; 1255a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1256a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1257a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1258a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_NONE: 1259a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->stop_arg != 0) { 1260a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->stop_arg = 0; 1261a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1262a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1263a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1264a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 1265a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1266a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1267a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1268a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (err) 1269a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 3; 1270a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1271a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* step 4: fix up any arguments */ 1272a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1273a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->convert_src == TRIG_TIMER) { 1274a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* if we are not in burst mode */ 1275a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->scan_begin_src == TRIG_FOLLOW) { 1276a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess tmp_arg = cmd->convert_arg; 1277a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* calculate counter values that give desired timing */ 1278a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess i8253_cascade_ns_to_timer_2div(TIMER_BASE, 12790a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(devpriv->divisor1), 12800a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(devpriv->divisor2), 12810a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(cmd->convert_arg), 12820a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd-> 12830a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral flags & TRIG_ROUND_MASK); 1284a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (tmp_arg != cmd->convert_arg) 1285a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1286a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1287a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* if we are in burst mode */ 1288a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess else { 1289a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* check that convert_arg is compatible */ 1290a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess tmp_arg = cmd->convert_arg; 1291a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->convert_arg = 12920a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral burst_convert_arg(cmd->convert_arg, 12930a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd->flags & TRIG_ROUND_MASK); 1294a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (tmp_arg != cmd->convert_arg) 1295a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1296a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1297a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->scan_begin_src == TRIG_TIMER) { 1298a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* if scans are timed faster than conversion rate allows */ 1299a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->convert_arg * cmd->chanlist_len > 13000a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd->scan_begin_arg) { 1301a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess cmd->scan_begin_arg = 13020a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd->convert_arg * 13030a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd->chanlist_len; 1304a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1305a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1306a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess tmp_arg = cmd->scan_begin_arg; 1307a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* calculate counter values that give desired timing */ 1308a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess i8253_cascade_ns_to_timer_2div(TIMER_BASE, 13090a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(devpriv-> 13100a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral divisor1), 13110a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(devpriv-> 13120a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral divisor2), 13130a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(cmd-> 13140a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral scan_begin_arg), 13150a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd-> 13160a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral flags & 13170a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral TRIG_ROUND_MASK); 1318a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (tmp_arg != cmd->scan_begin_arg) 1319a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1320a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1321a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1322a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1323a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1324a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (err) 1325a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 4; 1326a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1327a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* make sure user is not trying to mix unipolar and bipolar ranges */ 1328a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->chanlist) { 1329a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unipolar = CR_RANGE(cmd->chanlist[0]) & UNIPOLAR; 1330a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess for (i = 1; i < cmd->chanlist_len; i++) { 1331a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (unipolar != (CR_RANGE(cmd->chanlist[i]) & UNIPOLAR)) { 1332a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess comedi_error(dev, 13330a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral "unipolar and bipolar ranges cannot be mixed in the chanlist"); 1334a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1335a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1336a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1337a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1338a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1339a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1340a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (err) 1341a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 5; 1342a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1343a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 0; 1344a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1345a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1346a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* analog input cmd interface */ 1347a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1348a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* first, some utility functions used in the main ai_do_cmd() */ 1349a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1350a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* returns appropriate bits for control register a, depending on command */ 1351ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pembertonstatic int control_a_bits(struct comedi_cmd cmd) 1352a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1353a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int control_a; 1354a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1355a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton control_a = FFEN; /* enable fifo */ 1356a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd.stop_src == TRIG_EXT) { 1357a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_a |= ATEN; 1358a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1359a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch (cmd.start_src) { 1360a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_EXT: 1361a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_a |= TGEN | CGSL; 1362a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1363a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_NOW: 1364a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_a |= CGEN; 1365a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1366a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 1367a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1368a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1369a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1370a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return control_a; 1371a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1372a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1373a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* returns appropriate bits for control register c, depending on command */ 1374ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pembertonstatic int control_c_bits(struct comedi_cmd cmd) 1375a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1376a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int control_c; 1377a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int aref; 1378a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1379a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* set clock source to internal or external, select analog reference, 1380a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * select unipolar / bipolar 1381a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess */ 1382a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess aref = CR_AREF(cmd.chanlist[0]); 1383a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton control_c = UQEN; /* enable upper qram addresses */ 1384a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (aref != AREF_DIFF) 1385a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_c |= SD; 1386a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (aref == AREF_COMMON) 1387a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_c |= CMEN; 1388a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* if a unipolar range was selected */ 1389a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (CR_RANGE(cmd.chanlist[0]) & UNIPOLAR) 1390a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_c |= UB; 1391a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch (cmd.scan_begin_src) { 1392a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case TRIG_FOLLOW: /* not in burst mode */ 1393a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch (cmd.convert_src) { 1394a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_TIMER: 1395a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* trig on cascaded counters */ 1396a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_c |= IPCLK; 1397a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1398a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_EXT: 1399a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* trig on falling edge of external trigger */ 1400a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_c |= XPCLK; 1401a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1402a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 1403a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1404a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1405a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1406a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_TIMER: 1407a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* burst mode with internal pacer clock */ 1408a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_c |= BMDE | IPCLK; 1409a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1410a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_EXT: 1411a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* burst mode with external trigger */ 1412a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_c |= BMDE | XPCLK; 1413a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1414a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 1415a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1416a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1417a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1418a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return control_c; 1419a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1420a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1421a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* sets up counters */ 1422da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int setup_counters(struct comedi_device *dev, struct comedi_cmd cmd) 1423a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1424a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* setup cascaded counters for conversion/scan frequency */ 1425a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch (cmd.scan_begin_src) { 1426a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case TRIG_FOLLOW: /* not in burst mode */ 1427a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd.convert_src == TRIG_TIMER) { 1428a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* set conversion frequency */ 1429a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess i8253_cascade_ns_to_timer_2div(TIMER_BASE, 14300a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(devpriv->divisor1), 14310a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(devpriv->divisor2), 14320a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(cmd.convert_arg), 14330a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd. 14340a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral flags & TRIG_ROUND_MASK); 1435a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (das1800_set_frequency(dev) < 0) { 1436a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -1; 1437a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1438a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1439a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1440a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case TRIG_TIMER: /* in burst mode */ 1441a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* set scan frequency */ 1442a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess i8253_cascade_ns_to_timer_2div(TIMER_BASE, &(devpriv->divisor1), 14430a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(devpriv->divisor2), 14440a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &(cmd.scan_begin_arg), 14450a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd.flags & TRIG_ROUND_MASK); 1446a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (das1800_set_frequency(dev) < 0) { 1447a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -1; 1448a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1449a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1450a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 1451a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1452a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1453a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1454a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* setup counter 0 for 'about triggering' */ 1455a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd.stop_src == TRIG_EXT) { 1456a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* load counter 0 in mode 0 */ 1457a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess i8254_load(dev->iobase + DAS1800_COUNTER, 0, 0, 1, 0); 1458a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1459a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1460a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 0; 1461a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1462a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1463a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* sets up dma */ 1464da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic void setup_dma(struct comedi_device *dev, struct comedi_cmd cmd) 1465a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1466a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long lock_flags; 1467a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess const int dual_dma = devpriv->irq_dma_bits & DMA_DUAL; 1468a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1469a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if ((devpriv->irq_dma_bits & DMA_ENABLED) == 0) 1470a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 1471a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1472a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* determine a reasonable dma transfer size */ 1473a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_transfer_size = suggest_transfer_size(&cmd); 1474a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess lock_flags = claim_dma_lock(); 1475a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess disable_dma(devpriv->dma0); 1476a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* clear flip-flop to make sure 2-byte registers for 1477a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * count and address get set correctly */ 1478a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess clear_dma_ff(devpriv->dma0); 1479a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess set_dma_addr(devpriv->dma0, virt_to_bus(devpriv->ai_buf0)); 1480a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* set appropriate size of transfer */ 1481a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess set_dma_count(devpriv->dma0, devpriv->dma_transfer_size); 1482a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current = devpriv->dma0; 1483a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->dma_current_buf = devpriv->ai_buf0; 1484a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess enable_dma(devpriv->dma0); 1485a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* set up dual dma if appropriate */ 1486a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (dual_dma) { 1487a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess disable_dma(devpriv->dma1); 1488a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* clear flip-flop to make sure 2-byte registers for 1489a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * count and address get set correctly */ 1490a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess clear_dma_ff(devpriv->dma1); 1491a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess set_dma_addr(devpriv->dma1, virt_to_bus(devpriv->ai_buf1)); 1492a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* set appropriate size of transfer */ 1493a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess set_dma_count(devpriv->dma1, devpriv->dma_transfer_size); 1494a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess enable_dma(devpriv->dma1); 1495a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1496a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess release_dma_lock(lock_flags); 1497a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1498a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 1499a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1500a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1501a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* programs channel/gain list into card */ 1502da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic void program_chanlist(struct comedi_device *dev, struct comedi_cmd cmd) 1503a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1504a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int i, n, chan_range; 1505a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long irq_flags; 1506a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton const int range_mask = 0x3; /* masks unipolar/bipolar bit off range */ 1507a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess const int range_bitshift = 8; 1508a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1509a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess n = cmd.chanlist_len; 1510a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* spinlock protects indirect addressing */ 15115f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_lock_irqsave(&dev->spinlock, irq_flags); 1512a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(QRAM, dev->iobase + DAS1800_SELECT); /* select QRAM for baseAddress + 0x0 */ 1513a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(n - 1, dev->iobase + DAS1800_QRAM_ADDRESS); /*set QRAM address start */ 1514a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* make channel / gain list */ 1515a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess for (i = 0; i < n; i++) { 1516a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess chan_range = 15170a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral CR_CHAN(cmd. 15180a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral chanlist[i]) | ((CR_RANGE(cmd.chanlist[i]) & 15190a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral range_mask) << range_bitshift); 1520a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outw(chan_range, dev->iobase + DAS1800_QRAM); 1521a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1522a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(n - 1, dev->iobase + DAS1800_QRAM_ADDRESS); /*finish write to QRAM */ 15235f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_unlock_irqrestore(&dev->spinlock, irq_flags); 1524a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1525a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return; 1526a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1527a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1528a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* analog input do_cmd */ 15290a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ai_do_cmd(struct comedi_device *dev, 15300a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s) 1531a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1532a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int ret; 1533a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int control_a, control_c; 1534d163679ceec20c50f9aee880fa76c0c1185244a8Bill Pemberton struct comedi_async *async = s->async; 1535ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd cmd = async->cmd; 1536a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1537a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (!dev->irq) { 1538a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess comedi_error(dev, 15390a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral "no irq assigned for das-1800, cannot do hardware conversions"); 1540a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -1; 1541a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1542a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1543a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* disable dma on TRIG_WAKE_EOS, or TRIG_RT 1544a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * (because dma in handler is unsafe at hard real-time priority) */ 1545a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd.flags & (TRIG_WAKE_EOS | TRIG_RT)) { 1546a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits &= ~DMA_ENABLED; 1547a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } else { 1548a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits |= devpriv->dma_bits; 1549a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1550a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* interrupt on end of conversion for TRIG_WAKE_EOS */ 1551a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd.flags & TRIG_WAKE_EOS) { 1552a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* interrupt fifo not empty */ 1553a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits &= ~FIMD; 1554a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } else { 1555a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* interrupt fifo half full */ 1556a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->irq_dma_bits |= FIMD; 1557a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1558a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* determine how many conversions we need */ 1559a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd.stop_src == TRIG_COUNT) { 1560a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->count = cmd.stop_arg * cmd.chanlist_len; 1561a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1562a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1563a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess das1800_cancel(dev, s); 1564a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1565a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* determine proper bits for control registers */ 1566a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_a = control_a_bits(cmd); 1567a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess control_c = control_c_bits(cmd); 1568a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1569a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* setup card and start */ 1570a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess program_chanlist(dev, cmd); 1571a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess ret = setup_counters(dev, cmd); 1572a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (ret < 0) { 1573a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess comedi_error(dev, "Error setting up counters"); 1574a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return ret; 1575a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1576a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess setup_dma(dev, cmd); 1577a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(control_c, dev->iobase + DAS1800_CONTROL_C); 1578a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* set conversion rate and length for burst mode */ 1579a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (control_c & BMDE) { 1580a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* program conversion period with number of microseconds minus 1 */ 1581a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(cmd.convert_arg / 1000 - 1, 15820a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral dev->iobase + DAS1800_BURST_RATE); 1583a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(cmd.chanlist_len - 1, dev->iobase + DAS1800_BURST_LENGTH); 1584a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1585a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton outb(devpriv->irq_dma_bits, dev->iobase + DAS1800_CONTROL_B); /* enable irq/dma */ 1586a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(control_a, dev->iobase + DAS1800_CONTROL_A); /* enable fifo and triggering */ 1587a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(CVEN, dev->iobase + DAS1800_STATUS); /* enable conversions */ 1588a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1589a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 0; 1590a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1591a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1592a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* read analog input */ 15930a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ai_rinsn(struct comedi_device *dev, 15940a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 15950a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data) 1596a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1597a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int i, n; 1598a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int chan, range, aref, chan_range; 1599a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int timeout = 1000; 1600a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess short dpnt; 1601a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int conv_flags = 0; 1602a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long irq_flags; 1603a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1604a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* set up analog reference and unipolar / bipolar mode */ 1605a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess aref = CR_AREF(insn->chanspec); 1606a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess conv_flags |= UQEN; 1607a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (aref != AREF_DIFF) 1608a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess conv_flags |= SD; 1609a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (aref == AREF_COMMON) 1610a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess conv_flags |= CMEN; 1611a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* if a unipolar range was selected */ 1612a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (CR_RANGE(insn->chanspec) & UNIPOLAR) 1613a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess conv_flags |= UB; 1614a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1615a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(conv_flags, dev->iobase + DAS1800_CONTROL_C); /* software conversion enabled */ 1616a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(CVEN, dev->iobase + DAS1800_STATUS); /* enable conversions */ 1617a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(0x0, dev->iobase + DAS1800_CONTROL_A); /* reset fifo */ 1618a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(FFEN, dev->iobase + DAS1800_CONTROL_A); 1619a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1620a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess chan = CR_CHAN(insn->chanspec); 1621a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* mask of unipolar/bipolar bit from range */ 1622a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess range = CR_RANGE(insn->chanspec) & 0x3; 1623a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess chan_range = chan | (range << 8); 16245f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_lock_irqsave(&dev->spinlock, irq_flags); 1625a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(QRAM, dev->iobase + DAS1800_SELECT); /* select QRAM for baseAddress + 0x0 */ 1626a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(0x0, dev->iobase + DAS1800_QRAM_ADDRESS); /* set QRAM address start */ 1627a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outw(chan_range, dev->iobase + DAS1800_QRAM); 1628a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(0x0, dev->iobase + DAS1800_QRAM_ADDRESS); /*finish write to QRAM */ 1629a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(ADC, dev->iobase + DAS1800_SELECT); /* select ADC for baseAddress + 0x0 */ 1630a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1631a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess for (n = 0; n < insn->n; n++) { 1632a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* trigger conversion */ 1633a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(0, dev->iobase + DAS1800_FIFO); 1634a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess for (i = 0; i < timeout; i++) { 1635a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (inb(dev->iobase + DAS1800_STATUS) & FNE) 1636a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1637a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1638a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (i == timeout) { 1639a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess comedi_error(dev, "timeout"); 1640a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -ETIME; 1641a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1642a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess dpnt = inw(dev->iobase + DAS1800_FIFO); 1643a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess /* shift data to offset binary for bipolar ranges */ 1644a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if ((conv_flags & UB) == 0) 1645a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess dpnt += 1 << (thisboard->resolution - 1); 1646a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess data[n] = dpnt; 1647a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 16485f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_unlock_irqrestore(&dev->spinlock, irq_flags); 1649a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1650a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return n; 1651a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1652a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1653a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* writes to an analog output channel */ 16540a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_ao_winsn(struct comedi_device *dev, 16550a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 16560a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data) 1657a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1658a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int chan = CR_CHAN(insn->chanspec); 1659a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* int range = CR_RANGE(insn->chanspec); */ 1660a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int update_chan = thisboard->ao_n_chan - 1; 1661a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess short output; 1662a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned long irq_flags; 1663a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1664a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* card expects two's complement data */ 1665a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess output = data[0] - (1 << (thisboard->resolution - 1)); 1666a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* if the write is to the 'update' channel, we need to remember its value */ 1667a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (chan == update_chan) 1668a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->ao_update_bits = output; 1669a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* write to channel */ 16705f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_lock_irqsave(&dev->spinlock, irq_flags); 1671a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(DAC(chan), dev->iobase + DAS1800_SELECT); /* select dac channel for baseAddress + 0x0 */ 1672a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outw(output, dev->iobase + DAS1800_DAC); 1673a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* now we need to write to 'update' channel to update all dac channels */ 1674a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (chan != update_chan) { 1675a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(DAC(update_chan), dev->iobase + DAS1800_SELECT); /* select 'update' channel for baseAddress + 0x0 */ 1676a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outw(devpriv->ao_update_bits, dev->iobase + DAS1800_DAC); 1677a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 16785f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_unlock_irqrestore(&dev->spinlock, irq_flags); 1679a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1680a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 1; 1681a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1682a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1683a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* reads from digital input channels */ 16840a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_di_rbits(struct comedi_device *dev, 16850a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 16860a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data) 1687a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1688a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1689a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess data[1] = inb(dev->iobase + DAS1800_DIGITAL) & 0xf; 1690a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess data[0] = 0; 1691a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1692a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 2; 1693a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1694a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1695a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* writes to digital output channels */ 16960a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int das1800_do_wbits(struct comedi_device *dev, 16970a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 16980a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data) 1699a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1700790c55415aa31f4c732729f94d2c3a54f7d3bfc2Bill Pemberton unsigned int wbits; 1701a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1702a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* only set bits that have been masked */ 1703a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess data[0] &= (1 << s->n_chan) - 1; 1704a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess wbits = devpriv->do_bits; 1705a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess wbits &= ~data[0]; 1706a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess wbits |= data[0] & data[1]; 1707a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess devpriv->do_bits = wbits; 1708a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1709a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess outb(devpriv->do_bits, dev->iobase + DAS1800_DIGITAL); 1710a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1711a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess data[1] = devpriv->do_bits; 1712a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1713a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 2; 1714a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1715a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1716a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* loads counters with divisor1, divisor2 from private structure */ 1717da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int das1800_set_frequency(struct comedi_device *dev) 1718a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1719a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess int err = 0; 1720a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1721a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* counter 1, mode 2 */ 1722a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (i8254_load(dev->iobase + DAS1800_COUNTER, 0, 1, devpriv->divisor1, 17230a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral 2)) 1724a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1725a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* counter 2, mode 2 */ 1726a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (i8254_load(dev->iobase + DAS1800_COUNTER, 0, 2, devpriv->divisor2, 17270a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral 2)) 1728a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess err++; 1729a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (err) 1730a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return -1; 1731a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1732a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return 0; 1733a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1734a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1735a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess/* converts requested conversion timing to timing compatible with 1736a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess * hardware, used only when card is in 'burst mode' 1737a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess */ 1738a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hessstatic unsigned int burst_convert_arg(unsigned int convert_arg, int round_mode) 1739a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1740a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int micro_sec; 1741a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1742a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* in burst mode, the maximum conversion time is 64 microseconds */ 1743a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (convert_arg > 64000) 1744a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess convert_arg = 64000; 1745a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1746a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* the conversion time must be an integral number of microseconds */ 1747a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch (round_mode) { 1748a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_ROUND_NEAREST: 1749a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 1750a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess micro_sec = (convert_arg + 500) / 1000; 1751a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1752a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_ROUND_DOWN: 1753a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess micro_sec = convert_arg / 1000; 1754a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1755a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_ROUND_UP: 1756a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess micro_sec = (convert_arg - 1) / 1000 + 1; 1757a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1758a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1759a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1760a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* return number of nanoseconds */ 1761a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return micro_sec * 1000; 1762a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1763a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1764a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton/* utility function that suggests a dma transfer size based on the conversion period 'ns' */ 1765da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic unsigned int suggest_transfer_size(struct comedi_cmd *cmd) 1766a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess{ 1767a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess unsigned int size = DMA_BUF_SIZE; 1768a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton static const int sample_size = 2; /* size in bytes of one sample from board */ 1769a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton unsigned int fill_time = 300000000; /* target time in nanoseconds for filling dma buffer */ 1770a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton unsigned int max_size; /* maximum size we will allow for a transfer */ 1771a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1772a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* make dma buffer fill in 0.3 seconds for timed modes */ 1773a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess switch (cmd->scan_begin_src) { 1774a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton case TRIG_FOLLOW: /* not in burst mode */ 1775a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->convert_src == TRIG_TIMER) 1776a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess size = (fill_time / cmd->convert_arg) * sample_size; 1777a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1778a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess case TRIG_TIMER: 1779a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess size = (fill_time / (cmd->scan_begin_arg * cmd->chanlist_len)) * 17800a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral sample_size; 1781a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1782a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess default: 1783a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess size = DMA_BUF_SIZE; 1784a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess break; 1785a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess } 1786a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1787a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* set a minimum and maximum size allowed */ 1788a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess max_size = DMA_BUF_SIZE; 1789a351ecf3081f94796cf915dba820f9f5e62c43cfBill Pemberton /* if we are taking limited number of conversions, limit transfer size to that */ 1790a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (cmd->stop_src == TRIG_COUNT && 17910a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral cmd->stop_arg * cmd->chanlist_len * sample_size < max_size) 1792a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess max_size = cmd->stop_arg * cmd->chanlist_len * sample_size; 1793a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1794a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (size > max_size) 1795a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess size = max_size; 1796a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess if (size < sample_size) 1797a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess size = sample_size; 1798a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess 1799a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess return size; 1800a69cc3a9fae82f3620d7242fe5bfaedd24b65df5Frank Mori Hess} 1801