// SPDX-License-Identifier: GPL-2.0 /* * comedi/drivers/pcl818.c * * Driver: pcl818 * Description: Advantech PCL-818 cards, PCL-718 * Author: Michal Dobes <[email protected]> * Devices: [Advantech] PCL-818L (pcl818l), PCL-818H (pcl818h), * PCL-818HD (pcl818hd), PCL-818HG (pcl818hg), PCL-818 (pcl818), * PCL-718 (pcl718) * Status: works * * All cards have 16 SE/8 DIFF ADCs, one or two DACs, 16 DI and 16 DO. * Differences are only at maximal sample speed, range list and FIFO * support. * The driver support AI mode 0, 1, 3 other subdevices (AO, DI, DO) support * only mode 0. If DMA/FIFO/INT are disabled then AI support only mode 0. * PCL-818HD and PCL-818HG support 1kword FIFO. Driver support this FIFO * but this code is untested. * A word or two about DMA. Driver support DMA operations at two ways: * 1) DMA uses two buffers and after one is filled then is generated * INT and DMA restart with second buffer. With this mode I'm unable run * more that 80Ksamples/secs without data dropouts on K6/233. * 2) DMA uses one buffer and run in autoinit mode and the data are * from DMA buffer moved on the fly with 2kHz interrupts from RTC. * This mode is used if the interrupt 8 is available for allocation. * If not, then first DMA mode is used. With this I can run at * full speed one card (100ksamples/secs) or two cards with * 60ksamples/secs each (more is problem on account of ISA limitations). * To use this mode you must have compiled kernel with disabled * "Enhanced Real Time Clock Support". * Maybe you can have problems if you use xntpd or similar. * If you've data dropouts with DMA mode 2 then: * a) disable IDE DMA * b) switch text mode console to fb. * * Options for PCL-818L: * [0] - IO Base * [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7) * [2] - DMA (0=disable, 1, 3) * [3] - 0, 10=10MHz clock for 8254 * 1= 1MHz clock for 8254 * [4] - 0, 5=A/D input -5V.. +5V * 1, 10=A/D input -10V..+10V * [5] - 0, 5=D/A output 0-5V (internal reference -5V) * 1, 10=D/A output 0-10V (internal reference -10V) * 2 =D/A output unknown (external reference) * * Options for PCL-818, PCL-818H: * [0] - IO Base * [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7) * [2] - DMA (0=disable, 1, 3) * [3] - 0, 10=10MHz clock for 8254 * 1= 1MHz clock for 8254 * [4] - 0, 5=D/A output 0-5V (internal reference -5V) * 1, 10=D/A output 0-10V (internal reference -10V) * 2 =D/A output unknown (external reference) * * Options for PCL-818HD, PCL-818HG: * [0] - IO Base * [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7) * [2] - DMA/FIFO (-1=use FIFO, 0=disable both FIFO and DMA, * 1=use DMA ch 1, 3=use DMA ch 3) * [3] - 0, 10=10MHz clock for 8254 * 1= 1MHz clock for 8254 * [4] - 0, 5=D/A output 0-5V (internal reference -5V) * 1, 10=D/A output 0-10V (internal reference -10V) * 2 =D/A output unknown (external reference) * * Options for PCL-718: * [0] - IO Base * [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7) * [2] - DMA (0=disable, 1, 3) * [3] - 0, 10=10MHz clock for 8254 * 1= 1MHz clock for 8254 * [4] - 0=A/D Range is +/-10V * 1= +/-5V * 2= +/-2.5V * 3= +/-1V * 4= +/-0.5V * 5= user defined bipolar * 6= 0-10V * 7= 0-5V * 8= 0-2V * 9= 0-1V * 10= user defined unipolar * [5] - 0, 5=D/A outputs 0-5V (internal reference -5V) * 1, 10=D/A outputs 0-10V (internal reference -10V) * 2=D/A outputs unknown (external reference) * [6] - 0, 60=max 60kHz A/D sampling * 1,100=max 100kHz A/D sampling (PCL-718 with Option 001 installed) * */ #include <linux/module.h> #include <linux/gfp.h> #include <linux/delay.h> #include <linux/io.h> #include <linux/interrupt.h> #include <linux/comedi/comedidev.h> #include <linux/comedi/comedi_8254.h> #include <linux/comedi/comedi_isadma.h> /* * Register I/O map */ #define PCL818_AI_LSB_REG … #define PCL818_AI_MSB_REG … #define PCL818_RANGE_REG … #define PCL818_MUX_REG … #define PCL818_MUX_SCAN(_first, _last) … #define PCL818_DO_DI_LSB_REG … #define PCL818_AO_LSB_REG(x) … #define PCL818_AO_MSB_REG(x) … #define PCL818_STATUS_REG … #define PCL818_STATUS_NEXT_CHAN_MASK … #define PCL818_STATUS_INT … #define PCL818_STATUS_MUX … #define PCL818_STATUS_UNI … #define PCL818_STATUS_EOC … #define PCL818_CTRL_REG … #define PCL818_CTRL_TRIG(x) … #define PCL818_CTRL_DISABLE_TRIG … #define PCL818_CTRL_SOFT_TRIG … #define PCL818_CTRL_EXT_TRIG … #define PCL818_CTRL_PACER_TRIG … #define PCL818_CTRL_DMAE … #define PCL818_CTRL_IRQ(x) … #define PCL818_CTRL_INTE … #define PCL818_CNTENABLE_REG … #define PCL818_CNTENABLE_PACER_TRIG0 … #define PCL818_CNTENABLE_CNT0_INT_CLK … #define PCL818_DO_DI_MSB_REG … #define PCL818_TIMER_BASE … /* W: fifo enable/disable */ #define PCL818_FI_ENABLE … /* W: fifo interrupt clear */ #define PCL818_FI_INTCLR … /* W: fifo interrupt clear */ #define PCL818_FI_FLUSH … /* R: fifo status */ #define PCL818_FI_STATUS … /* R: one record from FIFO */ #define PCL818_FI_DATALO … #define PCL818_FI_DATAHI … #define MAGIC_DMA_WORD … static const struct comedi_lrange range_pcl818h_ai = …; static const struct comedi_lrange range_pcl818hg_ai = …; static const struct comedi_lrange range_pcl818l_l_ai = …; static const struct comedi_lrange range_pcl818l_h_ai = …; static const struct comedi_lrange range718_bipolar1 = …; static const struct comedi_lrange range718_bipolar0_5 = …; static const struct comedi_lrange range718_unipolar2 = …; static const struct comedi_lrange range718_unipolar1 = …; struct pcl818_board { … }; static const struct pcl818_board boardtypes[] = …; struct pcl818_private { … }; static void pcl818_ai_setup_dma(struct comedi_device *dev, struct comedi_subdevice *s, unsigned int unread_samples) { … } static void pcl818_ai_set_chan_range(struct comedi_device *dev, unsigned int chan, unsigned int range) { … } static void pcl818_ai_set_chan_scan(struct comedi_device *dev, unsigned int first_chan, unsigned int last_chan) { … } static void pcl818_ai_setup_chanlist(struct comedi_device *dev, unsigned int *chanlist, unsigned int seglen) { … } static void pcl818_ai_clear_eoc(struct comedi_device *dev) { … } static void pcl818_ai_soft_trig(struct comedi_device *dev) { … } static unsigned int pcl818_ai_get_fifo_sample(struct comedi_device *dev, struct comedi_subdevice *s, unsigned int *chan) { … } static unsigned int pcl818_ai_get_sample(struct comedi_device *dev, struct comedi_subdevice *s, unsigned int *chan) { … } static int pcl818_ai_eoc(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned long context) { … } static bool pcl818_ai_write_sample(struct comedi_device *dev, struct comedi_subdevice *s, unsigned int chan, unsigned short val) { … } static void pcl818_handle_eoc(struct comedi_device *dev, struct comedi_subdevice *s) { … } static void pcl818_handle_dma(struct comedi_device *dev, struct comedi_subdevice *s) { … } static void pcl818_handle_fifo(struct comedi_device *dev, struct comedi_subdevice *s) { … } static irqreturn_t pcl818_interrupt(int irq, void *d) { … } static int check_channel_list(struct comedi_device *dev, struct comedi_subdevice *s, unsigned int *chanlist, unsigned int n_chan) { … } static int check_single_ended(unsigned int port) { … } static int ai_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_cmd *cmd) { … } static int pcl818_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) { … } static int pcl818_ai_cancel(struct comedi_device *dev, struct comedi_subdevice *s) { … } static int pcl818_ai_insn_read(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } static int pcl818_ao_insn_write(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } static int pcl818_di_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } static int pcl818_do_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } static void pcl818_reset(struct comedi_device *dev) { … } static void pcl818_set_ai_range_table(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_devconfig *it) { … } static void pcl818_alloc_dma(struct comedi_device *dev, unsigned int dma_chan) { … } static void pcl818_free_dma(struct comedi_device *dev) { … } static int pcl818_attach(struct comedi_device *dev, struct comedi_devconfig *it) { … } static void pcl818_detach(struct comedi_device *dev) { … } static struct comedi_driver pcl818_driver = …; module_comedi_driver(…); MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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