X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fstaging%2Fcomedi%2Fdrivers%2Fcb_pcidda.c;h=581ff7a81cea5349ade9da3a5eee554681c798f0;hb=2696fb57e6af653dd8b4df41b16754579f42fc78;hp=ed0a5eb3dd91955b5287d0b527a8a00453419c46;hpb=93776a8ec746cf9d32c36e5a5b23d28d8be28826;p=pandora-kernel.git diff --git a/drivers/staging/comedi/drivers/cb_pcidda.c b/drivers/staging/comedi/drivers/cb_pcidda.c index ed0a5eb3dd91..581ff7a81cea 100644 --- a/drivers/staging/comedi/drivers/cb_pcidda.c +++ b/drivers/staging/comedi/drivers/cb_pcidda.c @@ -51,66 +51,66 @@ Please report success/failure with other different cards to #include "comedi_pci.h" #include "8255.h" -#define PCI_VENDOR_ID_CB 0x1307 // PCI vendor number of ComputerBoards -#define N_BOARDS 10 // Number of boards in cb_pcidda_boards -#define EEPROM_SIZE 128 // number of entries in eeprom -#define MAX_AO_CHANNELS 8 // maximum number of ao channels for supported boards +#define PCI_VENDOR_ID_CB 0x1307 /* PCI vendor number of ComputerBoards */ +#define N_BOARDS 10 /* Number of boards in cb_pcidda_boards */ +#define EEPROM_SIZE 128 /* number of entries in eeprom */ +#define MAX_AO_CHANNELS 8 /* maximum number of ao channels for supported boards */ /* PCI-DDA base addresses */ #define DIGITALIO_BADRINDEX 2 - // DIGITAL I/O is pci_dev->resource[2] + /* DIGITAL I/O is pci_dev->resource[2] */ #define DIGITALIO_SIZE 8 - // DIGITAL I/O uses 8 I/O port addresses + /* DIGITAL I/O uses 8 I/O port addresses */ #define DAC_BADRINDEX 3 - // DAC is pci_dev->resource[3] + /* DAC is pci_dev->resource[3] */ /* Digital I/O registers */ -#define PORT1A 0 // PORT 1A DATA +#define PORT1A 0 /* PORT 1A DATA */ -#define PORT1B 1 // PORT 1B DATA +#define PORT1B 1 /* PORT 1B DATA */ -#define PORT1C 2 // PORT 1C DATA +#define PORT1C 2 /* PORT 1C DATA */ -#define CONTROL1 3 // CONTROL REGISTER 1 +#define CONTROL1 3 /* CONTROL REGISTER 1 */ -#define PORT2A 4 // PORT 2A DATA +#define PORT2A 4 /* PORT 2A DATA */ -#define PORT2B 5 // PORT 2B DATA +#define PORT2B 5 /* PORT 2B DATA */ -#define PORT2C 6 // PORT 2C DATA +#define PORT2C 6 /* PORT 2C DATA */ -#define CONTROL2 7 // CONTROL REGISTER 2 +#define CONTROL2 7 /* CONTROL REGISTER 2 */ /* DAC registers */ -#define DACONTROL 0 // D/A CONTROL REGISTER -#define SU 0000001 // Simultaneous update enabled -#define NOSU 0000000 // Simultaneous update disabled -#define ENABLEDAC 0000002 // Enable specified DAC -#define DISABLEDAC 0000000 // Disable specified DAC -#define RANGE2V5 0000000 // 2.5V -#define RANGE5V 0000200 // 5V -#define RANGE10V 0000300 // 10V -#define UNIP 0000400 // Unipolar outputs -#define BIP 0000000 // Bipolar outputs - -#define DACALIBRATION1 4 // D/A CALIBRATION REGISTER 1 -//write bits -#define SERIAL_IN_BIT 0x1 // serial data input for eeprom, caldacs, reference dac +#define DACONTROL 0 /* D/A CONTROL REGISTER */ +#define SU 0000001 /* Simultaneous update enabled */ +#define NOSU 0000000 /* Simultaneous update disabled */ +#define ENABLEDAC 0000002 /* Enable specified DAC */ +#define DISABLEDAC 0000000 /* Disable specified DAC */ +#define RANGE2V5 0000000 /* 2.5V */ +#define RANGE5V 0000200 /* 5V */ +#define RANGE10V 0000300 /* 10V */ +#define UNIP 0000400 /* Unipolar outputs */ +#define BIP 0000000 /* Bipolar outputs */ + +#define DACALIBRATION1 4 /* D/A CALIBRATION REGISTER 1 */ +/* write bits */ +#define SERIAL_IN_BIT 0x1 /* serial data input for eeprom, caldacs, reference dac */ #define CAL_CHANNEL_MASK (0x7 << 1) #define CAL_CHANNEL_BITS(channel) (((channel) << 1) & CAL_CHANNEL_MASK) -//read bits +/* read bits */ #define CAL_COUNTER_MASK 0x1f -#define CAL_COUNTER_OVERFLOW_BIT 0x20 // calibration counter overflow status bit -#define AO_BELOW_REF_BIT 0x40 // analog output is less than reference dac voltage -#define SERIAL_OUT_BIT 0x80 // serial data out, for reading from eeprom +#define CAL_COUNTER_OVERFLOW_BIT 0x20 /* calibration counter overflow status bit */ +#define AO_BELOW_REF_BIT 0x40 /* analog output is less than reference dac voltage */ +#define SERIAL_OUT_BIT 0x80 /* serial data out, for reading from eeprom */ -#define DACALIBRATION2 6 // D/A CALIBRATION REGISTER 2 -#define SELECT_EEPROM_BIT 0x1 // send serial data in to eeprom -#define DESELECT_REF_DAC_BIT 0x2 // don't send serial data to MAX542 reference dac -#define DESELECT_CALDAC_BIT(n) (0x4 << (n)) // don't send serial data to caldac n -#define DUMMY_BIT 0x40 // manual says to set this bit with no explanation +#define DACALIBRATION2 6 /* D/A CALIBRATION REGISTER 2 */ +#define SELECT_EEPROM_BIT 0x1 /* send serial data in to eeprom */ +#define DESELECT_REF_DAC_BIT 0x2 /* don't send serial data to MAX542 reference dac */ +#define DESELECT_CALDAC_BIT(n) (0x4 << (n)) /* don't send serial data to caldac n */ +#define DUMMY_BIT 0x40 /* manual says to set this bit with no explanation */ -#define DADATA 8 // FIRST D/A DATA REGISTER (0) +#define DADATA 8 /* FIRST D/A DATA REGISTER (0) */ static const struct comedi_lrange cb_pcidda_ranges = { 6, @@ -131,15 +131,20 @@ static const struct comedi_lrange cb_pcidda_ranges = { */ struct cb_pcidda_board { const char *name; - char status; // Driver status: - // 0 - tested - // 1 - manual read, not tested - // 2 - manual not read + char status; /* Driver status: */ + + /* + * 0 - tested + * 1 - manual read, not tested + * 2 - manual not read + */ + unsigned short device_id; int ao_chans; int ao_bits; const struct comedi_lrange *ranges; }; + static const struct cb_pcidda_board cb_pcidda_boards[] = { { name: "pci-dda02/12", @@ -219,11 +224,13 @@ struct cb_pcidda_private { unsigned long digitalio; unsigned long dac; - //unsigned long control_status; - //unsigned long adc_fifo; - unsigned int dac_cal1_bits; // bits last written to da calibration register 1 - unsigned int ao_range[MAX_AO_CHANNELS]; // current range settings for output channels - u16 eeprom_data[EEPROM_SIZE]; // software copy of board's eeprom + + /* unsigned long control_status; */ + /* unsigned long adc_fifo; */ + + unsigned int dac_cal1_bits; /* bits last written to da calibration register 1 */ + unsigned int ao_range[MAX_AO_CHANNELS]; /* current range settings for output channels */ + u16 eeprom_data[EEPROM_SIZE]; /* software copy of board's eeprom */ }; /* @@ -234,12 +241,14 @@ struct cb_pcidda_private { static int cb_pcidda_attach(struct comedi_device * dev, struct comedi_devconfig * it); static int cb_pcidda_detach(struct comedi_device * dev); -//static int cb_pcidda_ai_rinsn(struct comedi_device *dev,struct comedi_subdevice *s,struct comedi_insn *insn,unsigned int *data); +/* static int cb_pcidda_ai_rinsn(struct comedi_device *dev,struct comedi_subdevice *s,struct comedi_insn *insn,unsigned int *data); */ static int cb_pcidda_ao_winsn(struct comedi_device * dev, struct comedi_subdevice * s, struct comedi_insn * insn, unsigned int * data); -//static int cb_pcidda_ai_cmd(struct comedi_device *dev,struct comedi_subdevice *s); -//static int cb_pcidda_ai_cmdtest(struct comedi_device *dev,struct comedi_subdevice *s, struct comedi_cmd *cmd); -//static int cb_pcidda_ns_to_timer(unsigned int *ns,int round); + +/* static int cb_pcidda_ai_cmd(struct comedi_device *dev, struct *comedi_subdevice *s);*/ +/* static int cb_pcidda_ai_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_cmd *cmd); */ +/* static int cb_pcidda_ns_to_timer(unsigned int *ns,int *round); */ + static unsigned int cb_pcidda_serial_in(struct comedi_device * dev); static void cb_pcidda_serial_out(struct comedi_device * dev, unsigned int value, unsigned int num_bits); @@ -310,7 +319,7 @@ static int cb_pcidda_attach(struct comedi_device * dev, struct comedi_devconfig found: devpriv->pci_dev = pcidev; dev->board_ptr = cb_pcidda_boards + index; - // "thisboard" macro can be used from here. + /* "thisboard" macro can be used from here. */ printk("Found %s at requested position\n", thisboard->name); /* @@ -353,11 +362,12 @@ static int cb_pcidda_attach(struct comedi_device * dev, struct comedi_devconfig s->maxdata = (1 << thisboard->ao_bits) - 1; s->range_table = thisboard->ranges; s->insn_write = cb_pcidda_ao_winsn; -// s->subdev_flags |= SDF_CMD_READ; -// s->do_cmd = cb_pcidda_ai_cmd; -// s->do_cmdtest = cb_pcidda_ai_cmdtest; - // two 8255 digital io subdevices + /* s->subdev_flags |= SDF_CMD_READ; */ + /* s->do_cmd = cb_pcidda_ai_cmd; */ + /* s->do_cmdtest = cb_pcidda_ai_cmdtest; */ + + /* two 8255 digital io subdevices */ s = dev->subdevices + 1; subdev_8255_init(dev, s, NULL, devpriv->digitalio); s = dev->subdevices + 2; @@ -370,7 +380,7 @@ static int cb_pcidda_attach(struct comedi_device * dev, struct comedi_devconfig } printk("\n"); - // set calibrations dacs + /* set calibrations dacs */ for (index = 0; index < thisboard->ao_chans; index++) cb_pcidda_calibrate(dev, index, devpriv->ao_range[index]); @@ -398,7 +408,7 @@ static int cb_pcidda_detach(struct comedi_device * dev) pci_dev_put(devpriv->pci_dev); } } - // cleanup 8255 + /* cleanup 8255 */ if (dev->subdevices) { subdev_8255_cleanup(dev, dev->subdevices + 1); subdev_8255_cleanup(dev, dev->subdevices + 2); @@ -607,7 +617,7 @@ static int cb_pcidda_ao_winsn(struct comedi_device * dev, struct comedi_subdevic channel = CR_CHAN(insn->chanspec); range = CR_RANGE(insn->chanspec); - // adjust calibration dacs if range has changed + /* adjust calibration dacs if range has changed */ if (range != devpriv->ao_range[channel]) cb_pcidda_calibrate(dev, channel, range); @@ -647,15 +657,15 @@ static int cb_pcidda_ao_winsn(struct comedi_device * dev, struct comedi_subdevic return 1; } -// lowlevel read from eeprom +/* lowlevel read from eeprom */ static unsigned int cb_pcidda_serial_in(struct comedi_device * dev) { unsigned int value = 0; int i; - const int value_width = 16; // number of bits wide values are + const int value_width = 16; /* number of bits wide values are */ for (i = 1; i <= value_width; i++) { - // read bits most significant bit first + /* read bits most significant bit first */ if (inw_p(devpriv->dac + DACALIBRATION1) & SERIAL_OUT_BIT) { value |= 1 << (value_width - i); } @@ -664,14 +674,14 @@ static unsigned int cb_pcidda_serial_in(struct comedi_device * dev) return value; } -// lowlevel write to eeprom/dac +/* lowlevel write to eeprom/dac */ static void cb_pcidda_serial_out(struct comedi_device * dev, unsigned int value, unsigned int num_bits) { int i; for (i = 1; i <= num_bits; i++) { - // send bits most significant bit first + /* send bits most significant bit first */ if (value & (1 << (num_bits - i))) devpriv->dac_cal1_bits |= SERIAL_IN_BIT; else @@ -680,136 +690,137 @@ static void cb_pcidda_serial_out(struct comedi_device * dev, unsigned int value, } } -// reads a 16 bit value from board's eeprom +/* reads a 16 bit value from board's eeprom */ static unsigned int cb_pcidda_read_eeprom(struct comedi_device * dev, unsigned int address) { unsigned int i; unsigned int cal2_bits; unsigned int value; - const int max_num_caldacs = 4; // one caldac for every two dac channels - const int read_instruction = 0x6; // bits to send to tell eeprom we want to read + const int max_num_caldacs = 4; /* one caldac for every two dac channels */ + const int read_instruction = 0x6; /* bits to send to tell eeprom we want to read */ const int instruction_length = 3; const int address_length = 8; - // send serial output stream to eeprom + /* send serial output stream to eeprom */ cal2_bits = SELECT_EEPROM_BIT | DESELECT_REF_DAC_BIT | DUMMY_BIT; - // deactivate caldacs (one caldac for every two channels) + /* deactivate caldacs (one caldac for every two channels) */ for (i = 0; i < max_num_caldacs; i++) { cal2_bits |= DESELECT_CALDAC_BIT(i); } outw_p(cal2_bits, devpriv->dac + DACALIBRATION2); - // tell eeprom we want to read + /* tell eeprom we want to read */ cb_pcidda_serial_out(dev, read_instruction, instruction_length); - // send address we want to read from + /* send address we want to read from */ cb_pcidda_serial_out(dev, address, address_length); value = cb_pcidda_serial_in(dev); - // deactivate eeprom + /* deactivate eeprom */ cal2_bits &= ~SELECT_EEPROM_BIT; outw_p(cal2_bits, devpriv->dac + DACALIBRATION2); return value; } -// writes to 8 bit calibration dacs +/* writes to 8 bit calibration dacs */ static void cb_pcidda_write_caldac(struct comedi_device * dev, unsigned int caldac, unsigned int channel, unsigned int value) { unsigned int cal2_bits; unsigned int i; - const int num_channel_bits = 3; // caldacs use 3 bit channel specification - const int num_caldac_bits = 8; // 8 bit calibration dacs - const int max_num_caldacs = 4; // one caldac for every two dac channels + const int num_channel_bits = 3; /* caldacs use 3 bit channel specification */ + const int num_caldac_bits = 8; /* 8 bit calibration dacs */ + const int max_num_caldacs = 4; /* one caldac for every two dac channels */ /* write 3 bit channel */ cb_pcidda_serial_out(dev, channel, num_channel_bits); - // write 8 bit caldac value + /* write 8 bit caldac value */ cb_pcidda_serial_out(dev, value, num_caldac_bits); - // latch stream into appropriate caldac - // deselect reference dac +/* +* latch stream into appropriate caldac deselect reference dac +*/ cal2_bits = DESELECT_REF_DAC_BIT | DUMMY_BIT; - // deactivate caldacs (one caldac for every two channels) + /* deactivate caldacs (one caldac for every two channels) */ for (i = 0; i < max_num_caldacs; i++) { cal2_bits |= DESELECT_CALDAC_BIT(i); } - // activate the caldac we want + /* activate the caldac we want */ cal2_bits &= ~DESELECT_CALDAC_BIT(caldac); outw_p(cal2_bits, devpriv->dac + DACALIBRATION2); - // deactivate caldac + /* deactivate caldac */ cal2_bits |= DESELECT_CALDAC_BIT(caldac); outw_p(cal2_bits, devpriv->dac + DACALIBRATION2); } -// returns caldac that calibrates given analog out channel +/* returns caldac that calibrates given analog out channel */ static unsigned int caldac_number(unsigned int channel) { return channel / 2; } -// returns caldac channel that provides fine gain for given ao channel +/* returns caldac channel that provides fine gain for given ao channel */ static unsigned int fine_gain_channel(unsigned int ao_channel) { return 4 * (ao_channel % 2); } -// returns caldac channel that provides coarse gain for given ao channel +/* returns caldac channel that provides coarse gain for given ao channel */ static unsigned int coarse_gain_channel(unsigned int ao_channel) { return 1 + 4 * (ao_channel % 2); } -// returns caldac channel that provides coarse offset for given ao channel +/* returns caldac channel that provides coarse offset for given ao channel */ static unsigned int coarse_offset_channel(unsigned int ao_channel) { return 2 + 4 * (ao_channel % 2); } -// returns caldac channel that provides fine offset for given ao channel +/* returns caldac channel that provides fine offset for given ao channel */ static unsigned int fine_offset_channel(unsigned int ao_channel) { return 3 + 4 * (ao_channel % 2); } -// returns eeprom address that provides offset for given ao channel and range +/* returns eeprom address that provides offset for given ao channel and range */ static unsigned int offset_eeprom_address(unsigned int ao_channel, unsigned int range) { return 0x7 + 2 * range + 12 * ao_channel; } -// returns eeprom address that provides gain calibration for given ao channel and range +/* returns eeprom address that provides gain calibration for given ao channel and range */ static unsigned int gain_eeprom_address(unsigned int ao_channel, unsigned int range) { return 0x8 + 2 * range + 12 * ao_channel; } -// returns upper byte of eeprom entry, which gives the coarse adjustment values +/* returns upper byte of eeprom entry, which gives the coarse adjustment values */ static unsigned int eeprom_coarse_byte(unsigned int word) { return (word >> 8) & 0xff; } -// returns lower byte of eeprom entry, which gives the fine adjustment values +/* returns lower byte of eeprom entry, which gives the fine adjustment values */ static unsigned int eeprom_fine_byte(unsigned int word) { return word & 0xff; } -// set caldacs to eeprom values for given channel and range +/* set caldacs to eeprom values for given channel and range */ static void cb_pcidda_calibrate(struct comedi_device * dev, unsigned int channel, unsigned int range) { unsigned int coarse_offset, fine_offset, coarse_gain, fine_gain; - // remember range so we can tell when we need to readjust calibration + /* remember range so we can tell when we need to readjust calibration */ devpriv->ao_range[channel] = range; - // get values from eeprom data + /* get values from eeprom data */ coarse_offset = eeprom_coarse_byte(devpriv-> eeprom_data[offset_eeprom_address(channel, range)]); @@ -823,7 +834,7 @@ static void cb_pcidda_calibrate(struct comedi_device * dev, unsigned int channel eeprom_fine_byte(devpriv-> eeprom_data[gain_eeprom_address(channel, range)]); - // set caldacs + /* set caldacs */ cb_pcidda_write_caldac(dev, caldac_number(channel), coarse_offset_channel(channel), coarse_offset); cb_pcidda_write_caldac(dev, caldac_number(channel),