diff options
Diffstat (limited to 'bsps/sparc/include/bsp/gradcdac.h')
| -rw-r--r-- | bsps/sparc/include/bsp/gradcdac.h | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/bsps/sparc/include/bsp/gradcdac.h b/bsps/sparc/include/bsp/gradcdac.h new file mode 100644 index 0000000000..b52077845f --- /dev/null +++ b/bsps/sparc/include/bsp/gradcdac.h @@ -0,0 +1,227 @@ +/* ADC / DAC (GRADCDAC) interface +/* + * COPYRIGHT (c) 2009. + * Cobham Gaisler AB. + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#ifndef __GRADCDAC_H__ +#define __GRADCDAC_H__ + +#ifdef __cplusplus +extern "C" { +#endif + +struct gradcdac_regs { + volatile unsigned int config; /* 0x00 Configuration Register */ + volatile unsigned int status; /* 0x04 Status Register */ + int unused0[2]; + volatile unsigned int adc_din; /* 0x10 ADC Data Input Register */ + volatile unsigned int dac_dout; /* 0x14 DAC Data Output Register */ + int unused1[2]; + volatile unsigned int adrin; /* 0x20 Address Input Register */ + volatile unsigned int adrout; /* 0x24 Address Output Register */ + volatile unsigned int adrdir; /* 0x28 Address Direction Register */ + int unused2[1]; + volatile unsigned int data_in; /* 0x30 Data Input Register */ + volatile unsigned int data_out; /* 0x34 Data Output Register */ + volatile unsigned int data_dir; /* 0x38 Data Direction Register */ +}; + +#define GRADCDAC_CFG_DACWS 0x00f80000 +#define GRADCDAC_CFG_WRPOL 0x00040000 +#define GRADCDAC_CFG_DACDW 0x00030000 +#define GRADCDAC_CFG_ADCWS 0x0000f800 +#define GRADCDAC_CFG_RCPOL 0x00000400 +#define GRADCDAC_CFG_CSMODE 0x00000300 +#define GRADCDAC_CFG_CSPOL 0x00000080 +#define GRADCDAC_CFG_RDYMODE 0x00000040 +#define GRADCDAC_CFG_RDYPOL 0x00000020 +#define GRADCDAC_CFG_TRIGPOL 0x00000010 +#define GRADCDAC_CFG_TRIGMODE 0x0000000c +#define GRADCDAC_CFG_ADCDW 0x00000003 + +#define GRADCDAC_CFG_DACWS_BIT 19 +#define GRADCDAC_CFG_WRPOL_BIT 18 +#define GRADCDAC_CFG_DACDW_BIT 16 +#define GRADCDAC_CFG_ADCWS_BIT 11 +#define GRADCDAC_CFG_RCPOL_BIT 10 +#define GRADCDAC_CFG_CSMODE_BIT 8 +#define GRADCDAC_CFG_CSPOL_BIT 7 +#define GRADCDAC_CFG_RDYMODE_BIT 6 +#define GRADCDAC_CFG_RDYPOL_BIT 5 +#define GRADCDAC_CFG_TRIGPOL_BIT 4 +#define GRADCDAC_CFG_TRIGMODE_BIT 2 +#define GRADCDAC_CFG_ADCDW_BIT 0 + +#define GRADCDAC_STATUS_DACNO 0x40 +#define GRADCDAC_STATUS_DACRDY 0x20 +#define GRADCDAC_STATUS_DACON 0x10 +#define GRADCDAC_STATUS_ADCTO 0x08 +#define GRADCDAC_STATUS_ADCNO 0x04 +#define GRADCDAC_STATUS_ADCRDY 0x02 +#define GRADCDAC_STATUS_ADCON 0x01 + +#define GRADCDAC_STATUS_DACNO_BIT 6 +#define GRADCDAC_STATUS_DACRDY_BIT 5 +#define GRADCDAC_STATUS_DACON_BIT 4 +#define GRADCDAC_STATUS_ADCTO_BIT 3 +#define GRADCDAC_STATUS_ADCNO_BIT 2 +#define GRADCDAC_STATUS_ADCRDY_BIT 1 +#define GRADCDAC_STATUS_ADCON_BIT 0 + +#define GRADCDAC_IRQ_DAC 1 +#define GRADCDAC_IRQ_ADC 0 + +struct gradcdac_config { + unsigned char dac_ws; + char wr_pol; + unsigned char dac_dw; + unsigned char adc_ws; + char rc_pol; + unsigned char cs_mode; + char cs_pol; + char ready_mode; + char ready_pol; + char trigg_pol; + unsigned char trigg_mode; + unsigned char adc_dw; +}; + +extern void *gradcdac_open(char *devname); + +extern void gradcdac_set_config(void *cookie, struct gradcdac_config *cfg); + +extern void gradcdac_get_config(void *cookie, struct gradcdac_config *cfg); + +extern void gradcdac_set_cfg(void *cookie, unsigned int config); + +extern unsigned int gradcdac_get_cfg(void *cookie); + +extern unsigned int gradcdac_get_status(void *cookie); + +static int __inline__ gradcdac_DAC_ReqRej(unsigned int status) +{ + return (status & GRADCDAC_STATUS_DACNO); +} + +static int __inline__ gradcdac_DAC_isCompleted(unsigned int status) +{ + return (status & GRADCDAC_STATUS_DACRDY); +} + +static int __inline__ gradcdac_DAC_isOngoing(unsigned int status) +{ + return (status & GRADCDAC_STATUS_DACON); +} + +static int __inline__ gradcdac_ADC_isTimeouted(unsigned int status) +{ + return (status & GRADCDAC_STATUS_ADCTO); +} + +static int __inline__ gradcdac_ADC_ReqRej(unsigned int status) +{ + return (status & GRADCDAC_STATUS_ADCNO); +} + +static int __inline__ gradcdac_ADC_isCompleted(unsigned int status) +{ + return (status & GRADCDAC_STATUS_ADCRDY); +} + +static int __inline__ gradcdac_ADC_isOngoing(unsigned int status) +{ + return (status & GRADCDAC_STATUS_ADCON); +} + +#define GRADCDAC_ISR_BOTH 3 +#define GRADCDAC_ISR_DAC 2 +#define GRADCDAC_ISR_ADC 1 + +/* Install IRQ handler for ADC and/or DAC interrupt. + * The installed IRQ handler(ISR) must read the status + * register to clear the pending interrupt avoiding multiple + * entries to the ISR caused by the same IRQ. + * + * \param adc 1=ADC interrupt, 2=ADC interrupt, 3=ADC and DAC interrupt + * \param isr Interrupt service routine called when IRQ is fired + * \param arg custom argument passed to ISR when called. + */ +extern int gradcdac_install_irq_handler + (void *cookie, int adc, void (*isr)(void *cookie, void *arg), void *arg); + +extern void gradcdac_uninstall_irq_handler(void *cookie, int adc); + +/* Make the ADC circuitry initialize a analogue to digital + * conversion. The result can be read out by gradcdac_adc_convert_try + * or gradcdac_adc_convert. + */ +extern void gradcdac_adc_convert_start(void *cookie); + +/* Tries to read the conversion result. If the circuitry is busy + * converting the function return a non-zero value, if the conversion + * has successfully finished the function return zero. + * + * \param digital_value the resulting converted value is placed here + * \return zero = ADC conversion complete, digital_value contain current conversion result + * positive = ADC busy, digital_value contain previous conversion result + * negative = Conversion request failed. + */ +extern int gradcdac_adc_convert_try(void *cookie, unsigned short *digital_value); + +/* Waits until the ADC circuity has finished a digital to analogue + * conversion. The Waiting is implemented as a busy loop utilizing + * 100% CPU load. + * + * \return zero = Conversion ok + * negative = Conversion request failed. + */ +extern int gradcdac_adc_convert(void *cookie, unsigned short *digital_value); + +/* Try to make the DAC circuitry initialize a digital to analogue + * conversion. If the circuitry is busy by a previous conversion + * the function return a non-zero value, if the conversion is + * successfully initialized the function return zero. + */ +extern int gradcdac_dac_convert_try(void *cookie, unsigned short digital_value); + +/* Initializes a digital to analogue conversion by waiting until + * previous conversions is finished before procceding with the + * conversion. The Waiting is implemented as a busy loop utilizing + * 100% CPU load. + */ +extern void gradcdac_dac_convert(void *cookie, unsigned short digital_value); + +extern unsigned int gradcdac_get_adrinput(void *cookie); +extern void gradcdac_set_adrinput(void *cookie, unsigned int input); + +extern unsigned int gradcdac_get_adroutput(void *cookie); +extern void gradcdac_set_adroutput(void *cookie, unsigned int output); + +extern unsigned int gradcdac_get_adrdir(void *cookie); +extern void gradcdac_set_adrdir(void *cookie, unsigned int dir); + +extern unsigned int gradcdac_get_datainput(void *cookie); +extern void gradcdac_set_datainput(void *cookie, unsigned int input); + +extern unsigned int gradcdac_get_dataoutput(void *cookie); +extern void gradcdac_set_dataoutput(void *cookie, unsigned int output); + +extern unsigned int gradcdac_get_datadir(void *cookie); +extern void gradcdac_set_datadir(void *cookie, unsigned int dir); + +/* Show one or all GRADCDAC cores. If cookie is NULL all GRADCDAC's are shown */ +extern void grAdcDacShow(void *cookie); + +/* Register Driver routine */ +extern void gradcdac_register_drv (void); + +#ifdef __cplusplus +} +#endif + +#endif |