/*
- comedi/drivers/cb_pcidas64.c
- This is a driver for the ComputerBoards/MeasurementComputing PCI-DAS
- 64xx, 60xx, and 4020 cards.
-
- Author: Frank Mori Hess <fmhess@users.sourceforge.net>
- Copyright (C) 2001, 2002 Frank Mori Hess
-
- Thanks also go to the following people:
-
- Steve Rosenbluth, for providing the source code for
- his pci-das6402 driver, and source code for working QNX pci-6402
- drivers by Greg Laird and Mariusz Bogacz. None of the code was
- used directly here, but it was useful as an additional source of
- documentation on how to program the boards.
-
- John Sims, for much testing and feedback on pcidas-4020 support.
-
- COMEDI - Linux Control and Measurement Device Interface
- Copyright (C) 1997-8 David A. Schleef <ds@schleef.org>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-*/
+ * comedi/drivers/cb_pcidas64.c
+ * This is a driver for the ComputerBoards/MeasurementComputing PCI-DAS
+ * 64xx, 60xx, and 4020 cards.
+ *
+ * Author: Frank Mori Hess <fmhess@users.sourceforge.net>
+ * Copyright (C) 2001, 2002 Frank Mori Hess
+ *
+ * Thanks also go to the following people:
+ *
+ * Steve Rosenbluth, for providing the source code for
+ * his pci-das6402 driver, and source code for working QNX pci-6402
+ * drivers by Greg Laird and Mariusz Bogacz. None of the code was
+ * used directly here, but it was useful as an additional source of
+ * documentation on how to program the boards.
+ *
+ * John Sims, for much testing and feedback on pcidas-4020 support.
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1997-8 David A. Schleef <ds@schleef.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
/*
* Driver: cb_pcidas64
*/
/*
-
-TODO:
- make it return error if user attempts an ai command that uses the
- external queue, and an ao command simultaneously user counter subdevice
- there are a number of boards this driver will support when they are
- fully released, but does not yet since the pci device id numbers
- are not yet available.
-
- support prescaled 100khz clock for slow pacing (not available on 6000
- series?)
-
- make ao fifo size adjustable like ai fifo
-*/
+ * TODO:
+ * make it return error if user attempts an ai command that uses the
+ * external queue, and an ao command simultaneously user counter subdevice
+ * there are a number of boards this driver will support when they are
+ * fully released, but does not yet since the pci device id numbers
+ * are not yet available.
+ *
+ * support prescaled 100khz clock for slow pacing (not available on 6000
+ * series?)
+ *
+ * make ao fifo size adjustable like ai fifo
+ */
#include <linux/module.h>
#include <linux/delay.h>
#include "plx9080.h"
#define TIMER_BASE 25 /* 40MHz master clock */
-/* 100kHz 'prescaled' clock for slow acquisition,
- * maybe I'll support this someday */
+/*
+ * 100kHz 'prescaled' clock for slow acquisition,
+ * maybe I'll support this someday
+ */
#define PRESCALED_TIMER_BASE 10000
-#define DMA_BUFFER_SIZE 0x1000
+#define DMA_BUFFER_SIZE 0x1000
+#define DAC_FIFO_SIZE 0x2000
-/* maximum value that can be loaded into board's 24-bit counters*/
+/* maximum value that can be loaded into board's 24-bit counters */
static const int max_counter_value = 0xffffff;
/* PCI-DAS64xxx base addresses */
/* devpriv->main_iobase registers */
enum write_only_registers {
- INTR_ENABLE_REG = 0x0, /* interrupt enable register */
- HW_CONFIG_REG = 0x2, /* hardware config register */
+ INTR_ENABLE_REG = 0x0, /* interrupt enable register */
+ HW_CONFIG_REG = 0x2, /* hardware config register */
DAQ_SYNC_REG = 0xc,
DAQ_ATRIG_LOW_4020_REG = 0xc,
- ADC_CONTROL0_REG = 0x10, /* adc control register 0 */
- ADC_CONTROL1_REG = 0x12, /* adc control register 1 */
+ ADC_CONTROL0_REG = 0x10, /* adc control register 0 */
+ ADC_CONTROL1_REG = 0x12, /* adc control register 1 */
CALIBRATION_REG = 0x14,
- /* lower 16 bits of adc sample interval counter */
+ /* lower 16 bits of adc sample interval counter */
ADC_SAMPLE_INTERVAL_LOWER_REG = 0x16,
- /* upper 8 bits of adc sample interval counter */
+ /* upper 8 bits of adc sample interval counter */
ADC_SAMPLE_INTERVAL_UPPER_REG = 0x18,
- /* lower 16 bits of delay interval counter */
+ /* lower 16 bits of delay interval counter */
ADC_DELAY_INTERVAL_LOWER_REG = 0x1a,
- /* upper 8 bits of delay interval counter */
+ /* upper 8 bits of delay interval counter */
ADC_DELAY_INTERVAL_UPPER_REG = 0x1c,
- /* lower 16 bits of hardware conversion/scan counter */
+ /* lower 16 bits of hardware conversion/scan counter */
ADC_COUNT_LOWER_REG = 0x1e,
- /* upper 8 bits of hardware conversion/scan counter */
+ /* upper 8 bits of hardware conversion/scan counter */
ADC_COUNT_UPPER_REG = 0x20,
- ADC_START_REG = 0x22, /* software trigger to start acquisition */
- ADC_CONVERT_REG = 0x24, /* initiates single conversion */
- ADC_QUEUE_CLEAR_REG = 0x26, /* clears adc queue */
- ADC_QUEUE_LOAD_REG = 0x28, /* loads adc queue */
+ ADC_START_REG = 0x22, /* software trigger to start acquisition */
+ ADC_CONVERT_REG = 0x24, /* initiates single conversion */
+ ADC_QUEUE_CLEAR_REG = 0x26, /* clears adc queue */
+ ADC_QUEUE_LOAD_REG = 0x28, /* loads adc queue */
ADC_BUFFER_CLEAR_REG = 0x2a,
- /* high channel for internal queue, use adc_chan_bits() inline above */
+ /* high channel for internal queue, use adc_chan_bits() inline above */
ADC_QUEUE_HIGH_REG = 0x2c,
- DAC_CONTROL0_REG = 0x50, /* dac control register 0 */
- DAC_CONTROL1_REG = 0x52, /* dac control register 0 */
- /* lower 16 bits of dac sample interval counter */
+ DAC_CONTROL0_REG = 0x50, /* dac control register 0 */
+ DAC_CONTROL1_REG = 0x52, /* dac control register 0 */
+ /* lower 16 bits of dac sample interval counter */
DAC_SAMPLE_INTERVAL_LOWER_REG = 0x54,
- /* upper 8 bits of dac sample interval counter */
+ /* upper 8 bits of dac sample interval counter */
DAC_SAMPLE_INTERVAL_UPPER_REG = 0x56,
DAC_SELECT_REG = 0x60,
DAC_START_REG = 0x64,
- DAC_BUFFER_CLEAR_REG = 0x66, /* clear dac buffer */
+ DAC_BUFFER_CLEAR_REG = 0x66, /* clear dac buffer */
};
static inline unsigned int dac_convert_reg(unsigned int channel)
};
enum read_write_registers {
- I8255_4020_REG = 0x48, /* 8255 offset, for 4020 only */
- /* external channel/gain queue, uses same bits as ADC_QUEUE_LOAD_REG */
+ I8255_4020_REG = 0x48, /* 8255 offset, for 4020 only */
+ /* external channel/gain queue, uses same bits as ADC_QUEUE_LOAD_REG */
ADC_QUEUE_FIFO_REG = 0x100,
ADC_FIFO_REG = 0x200, /* adc data fifo */
/* dac data fifo, has weird interactions with external channel queue */
/* bit definitions for write-only registers */
enum intr_enable_contents {
- ADC_INTR_SRC_MASK = 0x3, /* adc interrupt source mask */
- ADC_INTR_QFULL_BITS = 0x0, /* interrupt fifo quarter full */
- ADC_INTR_EOC_BITS = 0x1, /* interrupt end of conversion */
- ADC_INTR_EOSCAN_BITS = 0x2, /* interrupt end of scan */
- ADC_INTR_EOSEQ_BITS = 0x3, /* interrupt end of sequence mask */
- EN_ADC_INTR_SRC_BIT = 0x4, /* enable adc interrupt source */
- EN_ADC_DONE_INTR_BIT = 0x8, /* enable adc acquisition done intr */
+ ADC_INTR_SRC_MASK = 0x3, /* adc interrupt source mask */
+ ADC_INTR_QFULL_BITS = 0x0, /* interrupt fifo quarter full */
+ ADC_INTR_EOC_BITS = 0x1, /* interrupt end of conversion */
+ ADC_INTR_EOSCAN_BITS = 0x2, /* interrupt end of scan */
+ ADC_INTR_EOSEQ_BITS = 0x3, /* interrupt end of sequence mask */
+ EN_ADC_INTR_SRC_BIT = 0x4, /* enable adc interrupt source */
+ EN_ADC_DONE_INTR_BIT = 0x8, /* enable adc acquisition done intr */
DAC_INTR_SRC_MASK = 0x30,
DAC_INTR_QEMPTY_BITS = 0x0,
DAC_INTR_HIGH_CHAN_BITS = 0x10,
- EN_DAC_INTR_SRC_BIT = 0x40, /* enable dac interrupt source */
+ EN_DAC_INTR_SRC_BIT = 0x40, /* enable dac interrupt source */
EN_DAC_DONE_INTR_BIT = 0x80,
- EN_ADC_ACTIVE_INTR_BIT = 0x200, /* enable adc active interrupt */
- EN_ADC_STOP_INTR_BIT = 0x400, /* enable adc stop trigger interrupt */
- EN_DAC_ACTIVE_INTR_BIT = 0x800, /* enable dac active interrupt */
- EN_DAC_UNDERRUN_BIT = 0x4000, /* enable dac underrun status bit */
- EN_ADC_OVERRUN_BIT = 0x8000, /* enable adc overrun status bit */
+ EN_ADC_ACTIVE_INTR_BIT = 0x200, /* enable adc active interrupt */
+ EN_ADC_STOP_INTR_BIT = 0x400, /* enable adc stop trigger interrupt */
+ EN_DAC_ACTIVE_INTR_BIT = 0x800, /* enable dac active interrupt */
+ EN_DAC_UNDERRUN_BIT = 0x4000, /* enable dac underrun status bit */
+ EN_ADC_OVERRUN_BIT = 0x8000, /* enable adc overrun status bit */
};
enum hw_config_contents {
- MASTER_CLOCK_4020_MASK = 0x3, /* master clock source mask for 4020 */
- INTERNAL_CLOCK_4020_BITS = 0x1, /* use 40 MHz internal master clock */
- BNC_CLOCK_4020_BITS = 0x2, /* use BNC input for master clock */
- EXT_CLOCK_4020_BITS = 0x3, /* use dio input for master clock */
- EXT_QUEUE_BIT = 0x200, /* use external channel/gain queue */
- /* use 225 nanosec strobe when loading dac instead of 50 nanosec */
+ MASTER_CLOCK_4020_MASK = 0x3, /* master clock source mask for 4020 */
+ INTERNAL_CLOCK_4020_BITS = 0x1, /* use 40 MHz internal master clock */
+ BNC_CLOCK_4020_BITS = 0x2, /* use BNC input for master clock */
+ EXT_CLOCK_4020_BITS = 0x3, /* use dio input for master clock */
+ EXT_QUEUE_BIT = 0x200, /* use external channel/gain queue */
+ /* use 225 nanosec strobe when loading dac instead of 50 nanosec */
SLOW_DAC_BIT = 0x400,
- /* bit with unknown function yet given as default value in pci-das64
- * manual */
+ /*
+ * bit with unknown function yet given as default value in pci-das64
+ * manual
+ */
HW_CONFIG_DUMMY_BITS = 0x2000,
- /* bit selects channels 1/0 for analog input/output, otherwise 0/1 */
+ /* bit selects channels 1/0 for analog input/output, otherwise 0/1 */
DMA_CH_SELECT_BIT = 0x8000,
- FIFO_SIZE_REG = 0x4, /* allows adjustment of fifo sizes */
- DAC_FIFO_SIZE_MASK = 0xff00, /* bits that set dac fifo size */
- DAC_FIFO_BITS = 0xf800, /* 8k sample ao fifo */
+ FIFO_SIZE_REG = 0x4, /* allows adjustment of fifo sizes */
+ DAC_FIFO_SIZE_MASK = 0xff00, /* bits that set dac fifo size */
+ DAC_FIFO_BITS = 0xf800, /* 8k sample ao fifo */
};
-#define DAC_FIFO_SIZE 0x2000
enum daq_atrig_low_4020_contents {
- /* use trig/ext clk bnc input for analog gate signal */
+ /* use trig/ext clk bnc input for analog gate signal */
EXT_AGATE_BNC_BIT = 0x8000,
- /* use trig/ext clk bnc input for external stop trigger signal */
+ /* use trig/ext clk bnc input for external stop trigger signal */
EXT_STOP_TRIG_BNC_BIT = 0x4000,
- /* use trig/ext clk bnc input for external start trigger signal */
+ /* use trig/ext clk bnc input for external start trigger signal */
EXT_START_TRIG_BNC_BIT = 0x2000,
};
}
enum adc_control0_contents {
- ADC_GATE_SRC_MASK = 0x3, /* bits that select gate */
- ADC_SOFT_GATE_BITS = 0x1, /* software gate */
- ADC_EXT_GATE_BITS = 0x2, /* external digital gate */
- ADC_ANALOG_GATE_BITS = 0x3, /* analog level gate */
- /* level-sensitive gate (for digital) */
+ ADC_GATE_SRC_MASK = 0x3, /* bits that select gate */
+ ADC_SOFT_GATE_BITS = 0x1, /* software gate */
+ ADC_EXT_GATE_BITS = 0x2, /* external digital gate */
+ ADC_ANALOG_GATE_BITS = 0x3, /* analog level gate */
+ /* level-sensitive gate (for digital) */
ADC_GATE_LEVEL_BIT = 0x4,
- ADC_GATE_POLARITY_BIT = 0x8, /* gate active low */
+ ADC_GATE_POLARITY_BIT = 0x8, /* gate active low */
ADC_START_TRIG_SOFT_BITS = 0x10,
ADC_START_TRIG_EXT_BITS = 0x20,
ADC_START_TRIG_ANALOG_BITS = 0x30,
ADC_START_TRIG_MASK = 0x30,
- ADC_START_TRIG_FALLING_BIT = 0x40, /* trig 1 uses falling edge */
- /* external pacing uses falling edge */
+ ADC_START_TRIG_FALLING_BIT = 0x40, /* trig 1 uses falling edge */
+ /* external pacing uses falling edge */
ADC_EXT_CONV_FALLING_BIT = 0x800,
- /* enable hardware scan counter */
+ /* enable hardware scan counter */
ADC_SAMPLE_COUNTER_EN_BIT = 0x1000,
- ADC_DMA_DISABLE_BIT = 0x4000, /* disables dma */
- ADC_ENABLE_BIT = 0x8000, /* master adc enable */
+ ADC_DMA_DISABLE_BIT = 0x4000, /* disables dma */
+ ADC_ENABLE_BIT = 0x8000, /* master adc enable */
};
enum adc_control1_contents {
- /* should be set for boards with > 16 channels */
+ /* should be set for boards with > 16 channels */
ADC_QUEUE_CONFIG_BIT = 0x1,
CONVERT_POLARITY_BIT = 0x10,
EOC_POLARITY_BIT = 0x20,
- ADC_SW_GATE_BIT = 0x40, /* software gate of adc */
- ADC_DITHER_BIT = 0x200, /* turn on extra noise for dithering */
+ ADC_SW_GATE_BIT = 0x40, /* software gate of adc */
+ ADC_DITHER_BIT = 0x200, /* turn on extra noise for dithering */
RETRIGGER_BIT = 0x800,
ADC_LO_CHANNEL_4020_MASK = 0x300,
ADC_HI_CHANNEL_4020_MASK = 0xc00,
- TWO_CHANNEL_4020_BITS = 0x1000, /* two channel mode for 4020 */
- FOUR_CHANNEL_4020_BITS = 0x2000, /* four channel mode for 4020 */
+ TWO_CHANNEL_4020_BITS = 0x1000, /* two channel mode for 4020 */
+ FOUR_CHANNEL_4020_BITS = 0x2000, /* four channel mode for 4020 */
CHANNEL_MODE_4020_MASK = 0x3000,
ADC_MODE_MASK = 0xf000,
};
SELECT_8800_BIT = 0x1,
SELECT_8402_64XX_BIT = 0x2,
SELECT_1590_60XX_BIT = 0x2,
- CAL_EN_64XX_BIT = 0x40, /* calibration enable for 64xx series */
+ CAL_EN_64XX_BIT = 0x40, /* calibration enable for 64xx series */
SERIAL_DATA_IN_BIT = 0x80,
SERIAL_CLOCK_BIT = 0x100,
- CAL_EN_60XX_BIT = 0x200, /* calibration enable for 60xx series */
+ CAL_EN_60XX_BIT = 0x200, /* calibration enable for 60xx series */
CAL_GAIN_BIT = 0x800,
};
};
enum adc_queue_load_contents {
- UNIP_BIT = 0x800, /* unipolar/bipolar bit */
- ADC_SE_DIFF_BIT = 0x1000, /* single-ended/ differential bit */
- /* non-referenced single-ended (common-mode input) */
+ UNIP_BIT = 0x800, /* unipolar/bipolar bit */
+ ADC_SE_DIFF_BIT = 0x1000, /* single-ended/ differential bit */
+ /* non-referenced single-ended (common-mode input) */
ADC_COMMON_BIT = 0x2000,
- QUEUE_EOSEQ_BIT = 0x4000, /* queue end of sequence */
- QUEUE_EOSCAN_BIT = 0x8000, /* queue end of scan */
+ QUEUE_EOSEQ_BIT = 0x4000, /* queue end of sequence */
+ QUEUE_EOSCAN_BIT = 0x8000, /* queue end of scan */
};
static inline uint16_t adc_chan_bits(unsigned int channel)
};
enum dac_control0_contents {
- DAC_ENABLE_BIT = 0x8000, /* dac controller enable bit */
+ DAC_ENABLE_BIT = 0x8000, /* dac controller enable bit */
DAC_CYCLIC_STOP_BIT = 0x4000,
DAC_WAVEFORM_MODE_BIT = 0x100,
DAC_EXT_UPDATE_FALLING_BIT = 0x80,
DAC_WRITE_POLARITY_BIT = 0x800, /* board-dependent setting */
DAC1_EXT_REF_BIT = 0x200,
DAC0_EXT_REF_BIT = 0x100,
- DAC_OUTPUT_ENABLE_BIT = 0x80, /* dac output enable bit */
+ DAC_OUTPUT_ENABLE_BIT = 0x80, /* dac output enable bit */
DAC_UPDATE_POLARITY_BIT = 0x40, /* board-dependent setting */
DAC_SW_GATE_BIT = 0x20,
DAC1_UNIPOLAR_BIT = 0x8,
};
enum range_cal_i2c_contents {
- /* bits that set what source the adc converter measures */
+ /* bits that set what source the adc converter measures */
ADC_SRC_4020_MASK = 0x70,
- /* make bnc trig/ext clock threshold 0V instead of 2.5V */
+ /* make bnc trig/ext clock threshold 0V instead of 2.5V */
BNC_TRIG_THRESHOLD_0V_BIT = 0x80,
};
static inline uint8_t attenuate_bit(unsigned int channel)
{
- /* attenuate channel (+-5V input range) */
+ /* attenuate channel (+-5V input range) */
return 1 << (channel & 0x3);
};
struct pcidas64_board {
const char *name;
- int ai_se_chans; /* number of ai inputs in single-ended mode */
- int ai_bits; /* analog input resolution */
- int ai_speed; /* fastest conversion period in ns */
+ int ai_se_chans; /* number of ai inputs in single-ended mode */
+ int ai_bits; /* analog input resolution */
+ int ai_speed; /* fastest conversion period in ns */
const struct comedi_lrange *ai_range_table;
const uint8_t *ai_range_code;
- int ao_nchan; /* number of analog out channels */
- int ao_bits; /* analog output resolution */
- int ao_scan_speed; /* analog output scan speed */
+ int ao_nchan; /* number of analog out channels */
+ int ao_bits; /* analog output resolution */
+ int ao_scan_speed; /* analog output scan speed */
const struct comedi_lrange *ao_range_table;
const int *ao_range_code;
const struct hw_fifo_info *const ai_fifo;
- /* different board families have slightly different registers */
+ /* different board families have slightly different registers */
enum register_layout layout;
unsigned has_8255:1;
};
.has_8255 = 1,
},
[BOARD_PCIDAS6402_12] = {
- .name = "pci-das6402/12", /* XXX check */
+ .name = "pci-das6402/12", /* XXX check */
.ai_se_chans = 64,
.ai_bits = 12,
.ai_speed = 5000,
.ai_speed = 50,
.ao_bits = 12,
.ao_nchan = 2,
- .ao_scan_speed = 0, /* no hardware pacing on ao */
+ .ao_scan_speed = 0, /* no hardware pacing on ao */
.layout = LAYOUT_4020,
.ai_range_table = &ai_ranges_4020,
.ao_range_table = &ao_ranges_4020,
.has_8255 = 1,
},
#if 0
- /*
- * The device id for these boards is unknown
- */
+ /* The device id for these boards is unknown */
[BOARD_PCIDAS6402_16_JR] = {
.name = "pci-das6402/16/jr",
}
struct ext_clock_info {
- /* master clock divisor to use for scans with external master clock */
+ /* master clock divisor to use for scans with external master clock */
unsigned int divisor;
- /* chanspec for master clock input when used as scan begin src */
+ /* chanspec for master clock input when used as scan begin src */
unsigned int chanspec;
};
/* this structure is for data unique to this hardware driver. */
struct pcidas64_private {
- /* base addresses (physical) */
+ /* base addresses (physical) */
resource_size_t main_phys_iobase;
resource_size_t dio_counter_phys_iobase;
- /* base addresses (ioremapped) */
+ /* base addresses (ioremapped) */
void __iomem *plx9080_iobase;
void __iomem *main_iobase;
- /* local address (used by dma controller) */
+ /* local address (used by dma controller) */
uint32_t local0_iobase;
uint32_t local1_iobase;
- /* dma buffers for analog input */
+ /* dma buffers for analog input */
uint16_t *ai_buffer[MAX_AI_DMA_RING_COUNT];
- /* physical addresses of ai dma buffers */
+ /* physical addresses of ai dma buffers */
dma_addr_t ai_buffer_bus_addr[MAX_AI_DMA_RING_COUNT];
- /* array of ai dma descriptors read by plx9080,
- * allocated to get proper alignment */
+ /*
+ * array of ai dma descriptors read by plx9080,
+ * allocated to get proper alignment
+ */
struct plx_dma_desc *ai_dma_desc;
- /* physical address of ai dma descriptor array */
+ /* physical address of ai dma descriptor array */
dma_addr_t ai_dma_desc_bus_addr;
- /* index of the ai dma descriptor/buffer
- * that is currently being used */
+ /*
+ * index of the ai dma descriptor/buffer
+ * that is currently being used
+ */
unsigned int ai_dma_index;
- /* dma buffers for analog output */
+ /* dma buffers for analog output */
uint16_t *ao_buffer[AO_DMA_RING_COUNT];
- /* physical addresses of ao dma buffers */
+ /* physical addresses of ao dma buffers */
dma_addr_t ao_buffer_bus_addr[AO_DMA_RING_COUNT];
struct plx_dma_desc *ao_dma_desc;
dma_addr_t ao_dma_desc_bus_addr;
- /* keeps track of buffer where the next ao sample should go */
+ /* keeps track of buffer where the next ao sample should go */
unsigned int ao_dma_index;
- unsigned int hw_revision; /* stc chip hardware revision number */
- /* last bits sent to INTR_ENABLE_REG register */
+ unsigned int hw_revision; /* stc chip hardware revision number */
+ /* last bits sent to INTR_ENABLE_REG register */
unsigned int intr_enable_bits;
- /* last bits sent to ADC_CONTROL1_REG register */
+ /* last bits sent to ADC_CONTROL1_REG register */
uint16_t adc_control1_bits;
- /* last bits sent to FIFO_SIZE_REG register */
+ /* last bits sent to FIFO_SIZE_REG register */
uint16_t fifo_size_bits;
- /* last bits sent to HW_CONFIG_REG register */
+ /* last bits sent to HW_CONFIG_REG register */
uint16_t hw_config_bits;
uint16_t dac_control1_bits;
- /* last bits written to plx9080 control register */
+ /* last bits written to plx9080 control register */
uint32_t plx_control_bits;
- /* last bits written to plx interrupt control and status register */
+ /* last bits written to plx interrupt control and status register */
uint32_t plx_intcsr_bits;
- /* index of calibration source readable through ai ch0 */
+ /* index of calibration source readable through ai ch0 */
int calibration_source;
- /* bits written to i2c calibration/range register */
+ /* bits written to i2c calibration/range register */
uint8_t i2c_cal_range_bits;
- /* configure digital triggers to trigger on falling edge */
+ /* configure digital triggers to trigger on falling edge */
unsigned int ext_trig_falling;
short ai_cmd_running;
unsigned int ai_fifo_segment_length;
struct pcidas64_private *devpriv = dev->private;
unsigned long flags;
- /* spinlock for plx dma control/status reg */
+ /* spinlock for plx dma control/status reg */
spin_lock_irqsave(&dev->spinlock, flags);
plx9080_abort_dma(devpriv->plx9080_iobase, channel);
* if CMDF_WAKE_EOS flag is set.
*/
if (cmd->flags & CMDF_WAKE_EOS) {
- /* 4020 doesn't support pio transfers except for fifo dregs */
+ /* 4020 doesn't support pio transfers except for fifo dregs */
if (board->layout != LAYOUT_4020)
bits |= ADC_INTR_EOSCAN_BITS | EN_ADC_INTR_SRC_BIT;
}
abort_dma(dev, 0);
abort_dma(dev, 1);
- /* configure dma0 mode */
+ /* configure dma0 mode */
bits = 0;
- /* enable ready input, not sure if this is necessary */
+ /* enable ready input, not sure if this is necessary */
bits |= PLX_DMAMODE_READYIEN;
- /* enable bterm, not sure if this is necessary */
+ /* enable bterm, not sure if this is necessary */
bits |= PLX_DMAMODE_BTERMIEN;
- /* enable dma chaining */
+ /* enable dma chaining */
bits |= PLX_DMAMODE_CHAINEN;
- /* enable interrupt on dma done
- * (probably don't need this, since chain never finishes) */
+ /*
+ * enable interrupt on dma done
+ * (probably don't need this, since chain never finishes)
+ */
bits |= PLX_DMAMODE_DONEIEN;
- /* don't increment local address during transfers
- * (we are transferring from a fixed fifo register) */
+ /*
+ * don't increment local address during transfers
+ * (we are transferring from a fixed fifo register)
+ */
bits |= PLX_DMAMODE_LACONST;
- /* route dma interrupt to pci bus */
+ /* route dma interrupt to pci bus */
bits |= PLX_DMAMODE_INTRPCI;
- /* enable demand mode */
+ /* enable demand mode */
bits |= PLX_DMAMODE_DEMAND;
- /* enable local burst mode */
+ /* enable local burst mode */
bits |= PLX_DMAMODE_BURSTEN;
- /* 4020 uses 32 bit dma */
+ /* 4020 uses 32 bit dma */
if (board->layout == LAYOUT_4020)
- bits |= PLX_DMAMODE_WIDTH32;
- else /* localspace0 bus is 16 bits wide */
- bits |= PLX_DMAMODE_WIDTH16;
+ bits |= PLX_DMAMODE_WIDTH_32;
+ else /* localspace0 bus is 16 bits wide */
+ bits |= PLX_DMAMODE_WIDTH_16;
writel(bits, plx_iobase + PLX_REG_DMAMODE1);
if (ao_cmd_is_supported(board))
writel(bits, plx_iobase + PLX_REG_DMAMODE0);
- /* enable interrupts on plx 9080 */
+ /* enable interrupts on plx 9080 */
devpriv->plx_intcsr_bits |=
PLX_INTCSR_LSEABORTEN | PLX_INTCSR_LSEPARITYEN | PLX_INTCSR_PIEN |
PLX_INTCSR_PLIEN | PLX_INTCSR_PABORTIEN | PLX_INTCSR_LIOEN |
if (num_entries > fifo->max_segment_length)
num_entries = fifo->max_segment_length;
- /* 1 == 256 entries, 2 == 512 entries, etc */
+ /* 1 == 256 entries, 2 == 512 entries, etc */
num_increments = DIV_ROUND_CLOSEST(num_entries, increment_size);
bits = (~(num_increments - 1)) & fifo->fifo_size_reg_mask;
writew(devpriv->adc_control1_bits,
devpriv->main_iobase + ADC_CONTROL1_REG);
- /* 6402/16 manual says this register must be initialized to 0xff? */
+ /* 6402/16 manual says this register must be initialized to 0xff? */
writew(0xff, devpriv->main_iobase + ADC_SAMPLE_INTERVAL_UPPER_REG);
bits = SLOW_DAC_BIT | DMA_CH_SELECT_BIT;
spin_unlock_irqrestore(&dev->spinlock, flags);
- /* set fifos to maximum size */
+ /* set fifos to maximum size */
devpriv->fifo_size_bits |= DAC_FIFO_BITS;
set_ai_fifo_segment_length(dev, board->ai_fifo->max_segment_length);
struct pcidas64_private *devpriv = dev->private;
int i;
- /* allocate pci dma buffers */
+ /* allocate pci dma buffers */
for (i = 0; i < ai_dma_ring_count(board); i++) {
devpriv->ai_buffer[i] =
dma_alloc_coherent(&pcidev->dev, DMA_BUFFER_SIZE,
return -ENOMEM;
}
}
- /* allocate dma descriptors */
+ /* allocate dma descriptors */
devpriv->ai_dma_desc =
dma_alloc_coherent(&pcidev->dev, sizeof(struct plx_dma_desc) *
ai_dma_ring_count(board),
if (!devpriv->ao_dma_desc)
return -ENOMEM;
}
- /* initialize dma descriptors */
+ /* initialize dma descriptors */
for (i = 0; i < ai_dma_ring_count(board); i++) {
devpriv->ai_dma_desc[i].pci_start_addr =
cpu_to_le32(devpriv->ai_buffer_bus_addr[i]);
void __iomem *plx_control_addr = devpriv->plx9080_iobase +
PLX_REG_CNTRL;
- if (state) {
- /* set data line high */
+ if (state) { /* set data line high */
devpriv->plx_control_bits &= ~data_bit;
writel(devpriv->plx_control_bits, plx_control_addr);
udelay(i2c_high_udelay);
- } else { /* set data line low */
-
+ } else { /* set data line low */
devpriv->plx_control_bits |= data_bit;
writel(devpriv->plx_control_bits, plx_control_addr);
udelay(i2c_low_udelay);
void __iomem *plx_control_addr = devpriv->plx9080_iobase +
PLX_REG_CNTRL;
- if (state) {
- /* set clock line high */
+ if (state) { /* set clock line high */
devpriv->plx_control_bits &= ~clock_bit;
writel(devpriv->plx_control_bits, plx_control_addr);
udelay(i2c_high_udelay);
- } else { /* set clock line low */
-
+ } else { /* set clock line low */
devpriv->plx_control_bits |= clock_bit;
writel(devpriv->plx_control_bits, plx_control_addr);
udelay(i2c_low_udelay);
i2c_set_sda(dev, 1);
i2c_set_scl(dev, 1);
- return 0; /* return fake acknowledge bit */
+ return 0; /* return fake acknowledge bit */
}
/* send start bit */
* eeprom and i2c bus
*/
- /* make sure we dont send anything to eeprom */
+ /* make sure we dont send anything to eeprom */
devpriv->plx_control_bits &= ~PLX_CNTRL_EECS;
i2c_stop(dev);
i2c_start(dev);
- /* send address and write bit */
+ /* send address and write bit */
bitstream = (address << 1) & ~read_bit;
i2c_write_byte(dev, bitstream);
- /* get acknowledge */
+ /* get acknowledge */
if (i2c_read_ack(dev) != 0) {
dev_err(dev->class_dev, "failed: no acknowledge\n");
i2c_stop(dev);
return;
}
- /* write data bytes */
+ /* write data bytes */
for (i = 0; i < length; i++) {
i2c_write_byte(dev, data[i]);
if (i2c_read_ack(dev) != 0) {
range = CR_RANGE(insn->chanspec);
aref = CR_AREF(insn->chanspec);
- /* disable card's analog input interrupt sources and pacing */
- /* 4020 generates dac done interrupts even though they are disabled */
+ /* disable card's analog input interrupt sources and pacing */
+ /* 4020 generates dac done interrupts even though they are disabled */
disable_ai_pacing(dev);
spin_lock_irqsave(&dev->spinlock, flags);
spin_unlock_irqrestore(&dev->spinlock, flags);
if (board->layout != LAYOUT_4020) {
- /* use internal queue */
+ /* use internal queue */
devpriv->hw_config_bits &= ~EXT_QUEUE_BIT;
writew(devpriv->hw_config_bits,
devpriv->main_iobase + HW_CONFIG_REG);
- /* ALT_SOURCE is internal calibration reference */
+ /* ALT_SOURCE is internal calibration reference */
if (insn->chanspec & CR_ALT_SOURCE) {
unsigned int cal_en_bit;
*/
writew(0, devpriv->main_iobase + CALIBRATION_REG);
}
- /* load internal queue */
+ /* load internal queue */
bits = 0;
- /* set gain */
+ /* set gain */
bits |= ai_range_bits_6xxx(dev, CR_RANGE(insn->chanspec));
- /* set single-ended / differential */
+ /* set single-ended / differential */
bits |= se_diff_bit_6xxx(dev, aref == AREF_DIFF);
if (aref == AREF_COMMON)
bits |= ADC_COMMON_BIT;
bits |= adc_chan_bits(channel);
- /* set stop channel */
+ /* set stop channel */
writew(adc_chan_bits(channel),
devpriv->main_iobase + ADC_QUEUE_HIGH_REG);
- /* set start channel, and rest of settings */
+ /* set start channel, and rest of settings */
writew(bits, devpriv->main_iobase + ADC_QUEUE_LOAD_REG);
} else {
uint8_t old_cal_range_bits = devpriv->i2c_cal_range_bits;
} else { /* select BNC inputs */
devpriv->i2c_cal_range_bits |= adc_src_4020_bits(4);
}
- /* select range */
+ /* select range */
if (range == 0)
devpriv->i2c_cal_range_bits |= attenuate_bit(channel);
else
}
for (n = 0; n < insn->n; n++) {
- /* clear adc buffer (inside loop for 4020 sake) */
+ /* clear adc buffer (inside loop for 4020 sake) */
writew(0, devpriv->main_iobase + ADC_BUFFER_CLEAR_REG);
/* trigger conversion, bits sent only matter for 4020 */
writew(adc_convert_chan_4020_bits(CR_CHAN(insn->chanspec)),
devpriv->main_iobase + ADC_CONVERT_REG);
- /* wait for data */
+ /* wait for data */
ret = comedi_timeout(dev, s, insn, cb_pcidas64_ai_eoc, 0);
if (ret)
return ret;
{
struct pcidas64_private *devpriv = dev->private;
- /* load hardware conversion counter */
+ /* load hardware conversion counter */
if (use_hw_sample_counter(cmd)) {
writew(cmd->stop_arg & 0xffff,
devpriv->main_iobase + ADC_COUNT_LOWER_REG);
static uint32_t ai_convert_counter_6xxx(const struct comedi_device *dev,
const struct comedi_cmd *cmd)
{
- /* supposed to load counter with desired divisor minus 3 */
+ /* supposed to load counter with desired divisor minus 3 */
return cmd->convert_arg / TIMER_BASE - 3;
}
{
uint32_t count;
- /* figure out how long we need to delay at end of scan */
+ /* figure out how long we need to delay at end of scan */
switch (cmd->scan_begin_src) {
case TRIG_TIMER:
count = (cmd->scan_begin_arg -
case TRIG_OTHER:
divisor = devpriv->ext_clock.divisor;
break;
- default: /* should never happen */
+ default: /* should never happen */
dev_err(dev->class_dev, "bug! failed to set ai pacing!\n");
divisor = 1000;
break;
}
- /* supposed to load counter with desired divisor minus 2 for 4020 */
+ /* supposed to load counter with desired divisor minus 2 for 4020 */
return divisor - 2;
}
{
struct pcidas64_private *devpriv = dev->private;
- /* select internal/external master clock */
+ /* select internal/external master clock */
devpriv->hw_config_bits &= ~MASTER_CLOCK_4020_MASK;
if (cmd->scan_begin_src == TRIG_OTHER) {
int chanspec = devpriv->ext_clock.chanspec;
struct pcidas64_private *devpriv = dev->private;
unsigned long flags;
- /* spinlock for plx dma control/status reg */
+ /* spinlock for plx dma control/status reg */
spin_lock_irqsave(&dev->spinlock, flags);
writeb(PLX_DMACSR_ENABLE | PLX_DMACSR_START | PLX_DMACSR_CLEARINTR,
devpriv->plx9080_iobase + PLX_REG_DMACSR(channel));
scan_counter = ai_scan_counter_6xxx(dev, cmd);
}
- /* load lower 16 bits of convert interval */
+ /* load lower 16 bits of convert interval */
writew(convert_counter & 0xffff,
devpriv->main_iobase + ADC_SAMPLE_INTERVAL_LOWER_REG);
- /* load upper 8 bits of convert interval */
+ /* load upper 8 bits of convert interval */
writew((convert_counter >> 16) & 0xff,
devpriv->main_iobase + ADC_SAMPLE_INTERVAL_UPPER_REG);
- /* load lower 16 bits of scan delay */
+ /* load lower 16 bits of scan delay */
writew(scan_counter & 0xffff,
devpriv->main_iobase + ADC_DELAY_INTERVAL_LOWER_REG);
- /* load upper 8 bits of scan delay */
+ /* load upper 8 bits of scan delay */
writew((scan_counter >> 16) & 0xff,
devpriv->main_iobase + ADC_DELAY_INTERVAL_UPPER_REG);
}
writew(devpriv->hw_config_bits,
devpriv->main_iobase + HW_CONFIG_REG);
bits = 0;
- /* set channel */
+ /* set channel */
bits |= adc_chan_bits(CR_CHAN(cmd->chanlist[0]));
- /* set gain */
+ /* set gain */
bits |= ai_range_bits_6xxx(dev,
CR_RANGE(cmd->chanlist[0]));
- /* set single-ended / differential */
+ /* set single-ended / differential */
bits |= se_diff_bit_6xxx(dev,
CR_AREF(cmd->chanlist[0]) ==
AREF_DIFF);
if (CR_AREF(cmd->chanlist[0]) == AREF_COMMON)
bits |= ADC_COMMON_BIT;
- /* set stop channel */
+ /* set stop channel */
writew(adc_chan_bits
(CR_CHAN(cmd->chanlist[cmd->chanlist_len - 1])),
devpriv->main_iobase + ADC_QUEUE_HIGH_REG);
- /* set start channel, and rest of settings */
+ /* set start channel, and rest of settings */
writew(bits,
devpriv->main_iobase + ADC_QUEUE_LOAD_REG);
} else {
- /* use external queue */
+ /* use external queue */
if (dev->write_subdev && dev->write_subdev->busy) {
warn_external_queue(dev);
return -EBUSY;
devpriv->hw_config_bits |= EXT_QUEUE_BIT;
writew(devpriv->hw_config_bits,
devpriv->main_iobase + HW_CONFIG_REG);
- /* clear DAC buffer to prevent weird interactions */
+ /* clear DAC buffer to prevent weird interactions */
writew(0,
devpriv->main_iobase + DAC_BUFFER_CLEAR_REG);
- /* clear queue pointer */
+ /* clear queue pointer */
writew(0, devpriv->main_iobase + ADC_QUEUE_CLEAR_REG);
- /* load external queue */
+ /* load external queue */
for (i = 0; i < cmd->chanlist_len; i++) {
bits = 0;
- /* set channel */
+ /* set channel */
bits |= adc_chan_bits(CR_CHAN(cmd->
chanlist[i]));
- /* set gain */
+ /* set gain */
bits |= ai_range_bits_6xxx(dev,
CR_RANGE(cmd->
chanlist
[i]));
- /* set single-ended / differential */
+ /* set single-ended / differential */
bits |= se_diff_bit_6xxx(dev,
CR_AREF(cmd->
chanlist[i]) ==
AREF_DIFF);
if (CR_AREF(cmd->chanlist[i]) == AREF_COMMON)
bits |= ADC_COMMON_BIT;
- /* mark end of queue */
+ /* mark end of queue */
if (i == cmd->chanlist_len - 1)
bits |= QUEUE_EOSCAN_BIT |
QUEUE_EOSEQ_BIT;
* but required for reliable operation
*/
writew(0, devpriv->main_iobase + ADC_QUEUE_CLEAR_REG);
- /* prime queue holding register */
+ /* prime queue holding register */
writew(0, devpriv->main_iobase + ADC_QUEUE_LOAD_REG);
}
} else {
devpriv->i2c_cal_range_bits &= ~ADC_SRC_4020_MASK;
/* select BNC inputs */
devpriv->i2c_cal_range_bits |= adc_src_4020_bits(4);
- /* select ranges */
+ /* select ranges */
for (i = 0; i < cmd->chanlist_len; i++) {
unsigned int channel = CR_CHAN(cmd->chanlist[i]);
unsigned int range = CR_RANGE(cmd->chanlist[i]);
if (retval < 0)
return retval;
- /* make sure internal calibration source is turned off */
+ /* make sure internal calibration source is turned off */
writew(0, devpriv->main_iobase + CALIBRATION_REG);
set_ai_pacing(dev, cmd);
if (board->layout != LAYOUT_4020) {
devpriv->adc_control1_bits &= ~ADC_MODE_MASK;
if (cmd->convert_src == TRIG_EXT)
- /* good old mode 13 */
+ /* good old mode 13 */
devpriv->adc_control1_bits |= adc_mode_bits(13);
else
- /* mode 8. What else could you need? */
+ /* mode 8. What else could you need? */
devpriv->adc_control1_bits |= adc_mode_bits(8);
} else {
devpriv->adc_control1_bits &= ~CHANNEL_MODE_4020_MASK;
devpriv->main_iobase + ADC_CONTROL1_REG);
spin_unlock_irqrestore(&dev->spinlock, flags);
- /* clear adc buffer */
+ /* clear adc buffer */
writew(0, devpriv->main_iobase + ADC_BUFFER_CLEAR_REG);
if ((cmd->flags & CMDF_WAKE_EOS) == 0 ||
board->layout == LAYOUT_4020) {
devpriv->ai_dma_index = 0;
- /* set dma transfer size */
+ /* set dma transfer size */
for (i = 0; i < ai_dma_ring_count(board); i++)
devpriv->ai_dma_desc[i].transfer_size =
cpu_to_le32(dma_transfer_size(dev) *
sizeof(uint16_t));
- /* give location of first dma descriptor */
+ /* give location of first dma descriptor */
load_first_dma_descriptor(dev, 1,
devpriv->ai_dma_desc_bus_addr |
PLX_DMADPR_DESCPCI |
bits = ADC_ENABLE_BIT | ADC_SOFT_GATE_BITS | ADC_GATE_LEVEL_BIT;
if (cmd->flags & CMDF_WAKE_EOS)
bits |= ADC_DMA_DISABLE_BIT;
- /* set start trigger */
+ /* set start trigger */
if (cmd->start_src == TRIG_EXT) {
bits |= ADC_START_TRIG_EXT_BITS;
if (cmd->start_arg & CR_INVERT)
spin_unlock_irqrestore(&dev->spinlock, flags);
- /* start acquisition */
+ /* start acquisition */
if (cmd->start_src == TRIG_NOW)
writew(0, devpriv->main_iobase + ADC_START_REG);
int num_samples;
do {
- /* get least significant 15 bits */
+ /* get least significant 15 bits */
read_index = readw(devpriv->main_iobase + ADC_READ_PNTR_REG) &
0x7fff;
write_index = readw(devpriv->main_iobase + ADC_WRITE_PNTR_REG) &
pci_addr_reg = devpriv->plx9080_iobase + PLX_REG_DMAPADR(channel);
- /* loop until we have read all the full buffers */
+ /* loop until we have read all the full buffers */
for (j = 0, next_transfer_addr = readl(pci_addr_reg);
(next_transfer_addr <
devpriv->ai_buffer_bus_addr[devpriv->ai_dma_index] ||
next_transfer_addr >=
devpriv->ai_buffer_bus_addr[devpriv->ai_dma_index] +
DMA_BUFFER_SIZE) && j < ai_dma_ring_count(board); j++) {
- /* transfer data from dma buffer to comedi buffer */
+ /* transfer data from dma buffer to comedi buffer */
num_samples = comedi_nsamples_left(s, dma_transfer_size(dev));
comedi_buf_write_samples(s,
devpriv->ai_buffer[devpriv->ai_dma_index],
uint8_t dma1_status;
unsigned long flags;
- /* check for fifo overrun */
+ /* check for fifo overrun */
if (status & ADC_OVERRUN_BIT) {
dev_err(dev->class_dev, "fifo overrun\n");
async->events |= COMEDI_CB_ERROR;
}
- /* spin lock makes sure no one else changes plx dma control reg */
+ /* spin lock makes sure no one else changes plx dma control reg */
spin_lock_irqsave(&dev->spinlock, flags);
dma1_status = readb(devpriv->plx9080_iobase + PLX_REG_DMACSR1);
- if (plx_status & PLX_INTCSR_DMA1IA) { /* dma chan 1 interrupt */
+ if (plx_status & PLX_INTCSR_DMA1IA) { /* dma chan 1 interrupt */
writeb((dma1_status & PLX_DMACSR_ENABLE) | PLX_DMACSR_CLEARINTR,
devpriv->plx9080_iobase + PLX_REG_DMACSR1);
}
spin_unlock_irqrestore(&dev->spinlock, flags);
- /* drain fifo with pio */
+ /* drain fifo with pio */
if ((status & ADC_DONE_BIT) ||
((cmd->flags & CMDF_WAKE_EOS) &&
(status & ADC_INTR_PENDING_BIT) &&
spin_unlock_irqrestore(&dev->spinlock, flags);
}
}
- /* if we are have all the data, then quit */
+ /* if we are have all the data, then quit */
if ((cmd->stop_src == TRIG_COUNT &&
async->scans_done >= cmd->stop_arg) ||
(cmd->stop_src == TRIG_EXT && (status & ADC_STOP_BIT)))
async = s->async;
cmd = &async->cmd;
- /* spin lock makes sure no one else changes plx dma control reg */
+ /* spin lock makes sure no one else changes plx dma control reg */
spin_lock_irqsave(&dev->spinlock, flags);
dma0_status = readb(devpriv->plx9080_iobase + PLX_REG_DMACSR0);
if (plx_status & PLX_INTCSR_DMA0IA) { /* dma chan 0 interrupt */
int chan = CR_CHAN(insn->chanspec);
int range = CR_RANGE(insn->chanspec);
- /* do some initializing */
+ /* do some initializing */
writew(0, devpriv->main_iobase + DAC_CONTROL0_REG);
- /* set range */
+ /* set range */
set_dac_range_bits(dev, &devpriv->dac_control1_bits, chan, range);
writew(devpriv->dac_control1_bits,
devpriv->main_iobase + DAC_CONTROL1_REG);
- /* write to channel */
+ /* write to channel */
if (board->layout == LAYOUT_4020) {
writew(data[0] & 0xff,
devpriv->main_iobase + dac_lsb_4020_reg(chan));
writew(data[0], devpriv->main_iobase + dac_convert_reg(chan));
}
- /* remember output value */
+ /* remember output value */
s->readback[chan] = data[0];
return 1;
uint8_t serial_bytes[3];
uint8_t i2c_addr;
enum pointer_bits {
- /* manual has gain and offset bits switched */
+ /* manual has gain and offset bits switched */
OFFSET_0_2 = 0x1,
GAIN_0_2 = 0x2,
OFFSET_1_3 = 0x4,
};
switch (caldac_channel) {
- case 0: /* chan 0 offset */
+ case 0: /* chan 0 offset */
i2c_addr = CALDAC0_I2C_ADDR;
serial_bytes[0] = OFFSET_0_2;
break;
- case 1: /* chan 1 offset */
+ case 1: /* chan 1 offset */
i2c_addr = CALDAC0_I2C_ADDR;
serial_bytes[0] = OFFSET_1_3;
break;
- case 2: /* chan 2 offset */
+ case 2: /* chan 2 offset */
i2c_addr = CALDAC1_I2C_ADDR;
serial_bytes[0] = OFFSET_0_2;
break;
- case 3: /* chan 3 offset */
+ case 3: /* chan 3 offset */
i2c_addr = CALDAC1_I2C_ADDR;
serial_bytes[0] = OFFSET_1_3;
break;
- case 4: /* chan 0 gain */
+ case 4: /* chan 0 gain */
i2c_addr = CALDAC0_I2C_ADDR;
serial_bytes[0] = GAIN_0_2;
break;
- case 5: /* chan 1 gain */
+ case 5: /* chan 1 gain */
i2c_addr = CALDAC0_I2C_ADDR;
serial_bytes[0] = GAIN_1_3;
break;
- case 6: /* chan 2 gain */
+ case 6: /* chan 2 gain */
i2c_addr = CALDAC1_I2C_ADDR;
serial_bytes[0] = GAIN_0_2;
break;
- case 7: /* chan 3 gain */
+ case 7: /* chan 3 gain */
i2c_addr = CALDAC1_I2C_ADDR;
serial_bytes[0] = GAIN_1_3;
break;
udelay(eeprom_udelay);
devpriv->plx_control_bits &= ~PLX_CNTRL_EESK & ~PLX_CNTRL_EECS;
- /* make sure we don't send anything to the i2c bus on 4020 */
+ /* make sure we don't send anything to the i2c bus on 4020 */
devpriv->plx_control_bits |= PLX_CNTRL_USERO;
writel(devpriv->plx_control_bits, plx_control_addr);
- /* activate serial eeprom */
+ /* activate serial eeprom */
udelay(eeprom_udelay);
devpriv->plx_control_bits |= PLX_CNTRL_EECS;
writel(devpriv->plx_control_bits, plx_control_addr);
- /* write read command and desired memory address */
+ /* write read command and desired memory address */
for (bit = 1 << (bitstream_length - 1); bit; bit >>= 1) {
- /* set bit to be written */
+ /* set bit to be written */
udelay(eeprom_udelay);
if (bitstream & bit)
devpriv->plx_control_bits |= PLX_CNTRL_EEWB;
else
devpriv->plx_control_bits &= ~PLX_CNTRL_EEWB;
writel(devpriv->plx_control_bits, plx_control_addr);
- /* clock in bit */
+ /* clock in bit */
udelay(eeprom_udelay);
devpriv->plx_control_bits |= PLX_CNTRL_EESK;
writel(devpriv->plx_control_bits, plx_control_addr);
devpriv->plx_control_bits &= ~PLX_CNTRL_EESK;
writel(devpriv->plx_control_bits, plx_control_addr);
}
- /* read back value from eeprom memory location */
+ /* read back value from eeprom memory location */
value = 0;
for (bit = 1 << (value_length - 1); bit; bit >>= 1) {
- /* clock out bit */
+ /* clock out bit */
udelay(eeprom_udelay);
devpriv->plx_control_bits |= PLX_CNTRL_EESK;
writel(devpriv->plx_control_bits, plx_control_addr);
value |= bit;
}
- /* deactivate eeprom serial input */
+ /* deactivate eeprom serial input */
udelay(eeprom_udelay);
devpriv->plx_control_bits &= ~PLX_CNTRL_EECS;
writel(devpriv->plx_control_bits, plx_control_addr);
return 1;
}
-/*
- * Allocate and initialize the subdevice structures.
- */
+/* Allocate and initialize the subdevice structures. */
static int setup_subdevices(struct comedi_device *dev)
{
const struct pcidas64_board *board = dev->board_ptr;
* (not internal calibration sources)
*/
devpriv->i2c_cal_range_bits = adc_src_4020_bits(4);
- /* set channels to +-5 volt input ranges */
+ /* set channels to +-5 volt input ranges */
for (i = 0; i < s->n_chan; i++)
devpriv->i2c_cal_range_bits |= attenuate_bit(i);
data = devpriv->i2c_cal_range_bits;
s->type = COMEDI_SUBD_UNUSED;
}
- /* digital input */
+ /* digital input */
s = &dev->subdevices[2];
if (board->layout == LAYOUT_64XX) {
s->type = COMEDI_SUBD_DI;
s->type = COMEDI_SUBD_UNUSED;
}
- /* digital output */
+ /* digital output */
if (board->layout == LAYOUT_64XX) {
s = &dev->subdevices[3];
s->type = COMEDI_SUBD_DO;
s->type = COMEDI_SUBD_UNUSED;
}
- /* 8 channel dio for 60xx */
+ /* 8 channel dio for 60xx */
s = &dev->subdevices[5];
if (board->layout == LAYOUT_60XX) {
s->type = COMEDI_SUBD_DIO;
s->type = COMEDI_SUBD_UNUSED;
}
- /* caldac */
+ /* caldac */
s = &dev->subdevices[6];
s->type = COMEDI_SUBD_CALIB;
s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_INTERNAL;
s->readback[i] = s->maxdata / 2;
}
- /* 2 channel ad8402 potentiometer */
+ /* 2 channel ad8402 potentiometer */
s = &dev->subdevices[7];
if (board->layout == LAYOUT_64XX) {
s->type = COMEDI_SUBD_CALIB;
s->type = COMEDI_SUBD_UNUSED;
}
- /* user counter subd XXX */
+ /* user counter subd XXX */
s = &dev->subdevices[9];
s->type = COMEDI_SUBD_UNUSED;
return -ENOMEM;
}
- /* figure out what local addresses are */
+ /* figure out what local addresses are */
local_range = readl(devpriv->plx9080_iobase + PLX_REG_LAS0RR) &
PLX_LASRR_MEM_MASK;
local_decode = readl(devpriv->plx9080_iobase + PLX_REG_LAS0BA) &
projects / deliverable / linux.git / blobdiff