Hi Dan,

as discussed last week, here you can find my patch, touching
nearly every function in rf69.c

I tried my best to have a correct style of the patch.

As far, as I figured out, the patch does not fully apply on
staging-next, since there are two bugfixes missing, that
were reported before (my patch, concerning the bit shifting,
we talked about last week and an other patch fixing an issue
with a bit inversion).

Hope it helps :-)

Marcus


Am Mi, 2.08.2017, 13:10 schrieb Wolf Entwicklungen:
> According to the proposal of Walter Harms, I removed some macros
> and added some inline functions.
>
> Since I used a bit more intelligent interface, this enhances
> readability and reduces problems with checkpatch.pl at the same time.
>
> In addition obsolete debug ifdefs were removed.
>
> Signed-off-by: Marcus Wolf <li...@wolf-entwicklungen.de>
> ---
>  drivers/staging/pi433/rf69.c |  544 
> ++++++++++++++++++------------------------
>  1 file changed, 238 insertions(+), 306 deletions(-)
>
> diff --git a/drivers/staging/pi433/rf69.c b/drivers/staging/pi433/rf69.c
> --- a/drivers/staging/pi433/rf69.c
> +++ b/drivers/staging/pi433/rf69.c
> @@ -28,33 +28,57 @@
>  #include "rf69.h"
>  #include "rf69_registers.h"
>
> -#define F_OSC          32000000 /* in Hz */
> -#define FIFO_SIZE 66            /* in byte */
> +#define F_OSC 32000000 /* in Hz */
> +#define FIFO_SIZE 66   /* in byte */
>
>  /*-------------------------------------------------------------------------*/
>
> -#define READ_REG(x)  rf69_read_reg (spi, x)
> -#define WRITE_REG(x,y)       rf69_write_reg(spi, x, y)
>  #define INVALID_PARAM \
>       { \
>               dev_dbg(&spi->dev, "set: illegal input param"); \
>               return -EINVAL; \
>       }
>
> +inline static int setBit(struct spi_device *spi, u8 reg, u8 mask)
> +{
> +     u8 tempVal;
> +
> +     tempVal = rf69_read_reg (spi, reg);
> +     tempVal = tempVal | mask;
> +     return rf69_write_reg(spi, reg, tempVal);
> +}
> +
> +inline static int rstBit(struct spi_device *spi, u8 reg, u8 mask)
> +{
> +     u8 tempVal;
> +
> +     tempVal = rf69_read_reg (spi, reg);
> +     tempVal = tempVal & ~mask;
> +     return rf69_write_reg(spi, reg, tempVal);
> +}
> +
> +inline static int rmw(struct spi_device *spi, u8 reg, u8 mask, u8 value)
> +{
> +     u8 tempVal;
> +
> +     tempVal = rf69_read_reg (spi, reg);
> +     tempVal = (tempVal & ~mask) | value;
> +     return rf69_write_reg(spi, reg, tempVal);
> +}
> +
>  /*-------------------------------------------------------------------------*/
>
>  int rf69_set_mode(struct spi_device *spi, enum mode mode)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: mode");
> -     #endif
>
> +     dev_dbg(&spi->dev, "set: mode");
> +
>       switch (mode){
> -     case transmit:    return WRITE_REG(REG_OPMODE, (READ_REG(REG_OPMODE) & 
> ~MASK_OPMODE_MODE) | OPMODE_MODE_TRANSMIT);
> -     case receive:     return WRITE_REG(REG_OPMODE, (READ_REG(REG_OPMODE) & 
> ~MASK_OPMODE_MODE) | OPMODE_MODE_RECEIVE);
> -     case synthesizer: return WRITE_REG(REG_OPMODE, (READ_REG(REG_OPMODE) & 
> ~MASK_OPMODE_MODE) | OPMODE_MODE_SYNTHESIZER);
> -     case standby:     return WRITE_REG(REG_OPMODE, (READ_REG(REG_OPMODE) & 
> ~MASK_OPMODE_MODE) | OPMODE_MODE_STANDBY);
> -     case mode_sleep:  return WRITE_REG(REG_OPMODE, (READ_REG(REG_OPMODE) & 
> ~MASK_OPMODE_MODE) | OPMODE_MODE_SLEEP);
> +     case transmit:    return rmw(spi, REG_OPMODE, MASK_OPMODE_MODE, 
> OPMODE_MODE_TRANSMIT);
> +     case receive:     return rmw(spi, REG_OPMODE, MASK_OPMODE_MODE, 
> OPMODE_MODE_RECEIVE);
> +     case synthesizer: return rmw(spi, REG_OPMODE, MASK_OPMODE_MODE, 
> OPMODE_MODE_SYNTHESIZER);
> +     case standby:     return rmw(spi, REG_OPMODE, MASK_OPMODE_MODE, 
> OPMODE_MODE_STANDBY);
> +     case mode_sleep:  return rmw(spi, REG_OPMODE, MASK_OPMODE_MODE, 
> OPMODE_MODE_SLEEP);
>       default:          INVALID_PARAM;
>       }
>
> @@ -66,28 +90,26 @@
>
>  int rf69_set_data_mode(struct spi_device *spi, enum dataMode dataMode)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: data mode");
> -     #endif
>
> +     dev_dbg(&spi->dev, "set: data mode");
> +
>       switch (dataMode) {
> -     case packet:            return WRITE_REG(REG_DATAMODUL, 
> (READ_REG(REG_DATAMODUL) & ~MASK_DATAMODUL_MODE) | DATAMODUL_MODE_PACKET);
> -     case continuous:        return WRITE_REG(REG_DATAMODUL, 
> (READ_REG(REG_DATAMODUL) & ~MASK_DATAMODUL_MODE) | DATAMODUL_MODE_CONTINUOUS);
> -     case continuousNoSync:  return WRITE_REG(REG_DATAMODUL, 
> (READ_REG(REG_DATAMODUL) & ~MASK_DATAMODUL_MODE) | 
> DATAMODUL_MODE_CONTINUOUS_NOSYNC);
> +     case packet:            return rmw(spi, REG_DATAMODUL, 
> MASK_DATAMODUL_MODE, DATAMODUL_MODE_PACKET);
> +     case continuous:        return rmw(spi, REG_DATAMODUL, 
> MASK_DATAMODUL_MODE, DATAMODUL_MODE_CONTINUOUS);
> +     case continuousNoSync:  return rmw(spi, REG_DATAMODUL, 
> MASK_DATAMODUL_MODE, DATAMODUL_MODE_CONTINUOUS_NOSYNC);
>       default:                INVALID_PARAM;
>       }
>  }
>
>  int rf69_set_modulation(struct spi_device *spi, enum modulation modulation)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: modulation");
> -     #endif
>
> +     dev_dbg(&spi->dev, "set: modulation");
> +
>       switch (modulation) {
> -     case OOK:   return WRITE_REG(REG_DATAMODUL, (READ_REG(REG_DATAMODUL) & 
> ~MASK_DATAMODUL_MODULATION_TYPE) | DATAMODUL_MODULATION_TYPE_OOK);
> -     case FSK:   return WRITE_REG(REG_DATAMODUL, (READ_REG(REG_DATAMODUL) & 
> ~MASK_DATAMODUL_MODULATION_TYPE) | DATAMODUL_MODULATION_TYPE_FSK);
> -     default:    INVALID_PARAM;
> +     case OOK: return rmw(spi, REG_DATAMODUL, 
> MASK_DATAMODUL_MODULATION_TYPE, DATAMODUL_MODULATION_TYPE_OOK);
> +     case FSK: return rmw(spi, REG_DATAMODUL, 
> MASK_DATAMODUL_MODULATION_TYPE, DATAMODUL_MODULATION_TYPE_FSK);
> +     default:  INVALID_PARAM;
>       }
>  }
>
> @@ -95,11 +117,9 @@
>  {
>       u8 currentValue;
>
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "get: mode");
> -     #endif
> +     dev_dbg(&spi->dev, "get: mode");
>
> -     currentValue = READ_REG(REG_DATAMODUL);
> +     currentValue = rf69_read_reg(spi, REG_DATAMODUL);
>
>       switch (currentValue & MASK_DATAMODUL_MODULATION_TYPE)
>       {
> @@ -111,26 +131,25 @@
>
>  int rf69_set_modulation_shaping(struct spi_device *spi, enum modShaping 
> modShaping)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: mod shaping");
> -     #endif
>
> +     dev_dbg(&spi->dev, "set: mod shaping");
> +
>       if (rf69_get_modulation(spi) == FSK)
>       {
>               switch (modShaping) {
> -             case shapingOff: return WRITE_REG(REG_DATAMODUL, 
> (READ_REG(REG_DATAMODUL) & ~MASK_DATAMODUL_MODULATION_SHAPE) | 
> DATAMODUL_MODULATION_SHAPE_NONE);
> -             case shaping1_0: return WRITE_REG(REG_DATAMODUL, 
> (READ_REG(REG_DATAMODUL) & ~MASK_DATAMODUL_MODULATION_SHAPE) | 
> DATAMODUL_MODULATION_SHAPE_1_0);
> -             case shaping0_5: return WRITE_REG(REG_DATAMODUL, 
> (READ_REG(REG_DATAMODUL) & ~MASK_DATAMODUL_MODULATION_SHAPE) | 
> DATAMODUL_MODULATION_SHAPE_0_3);
> -             case shaping0_3: return WRITE_REG(REG_DATAMODUL, 
> (READ_REG(REG_DATAMODUL) & ~MASK_DATAMODUL_MODULATION_SHAPE) | 
> DATAMODUL_MODULATION_SHAPE_0_5);
> +             case shapingOff: return rmw(spi, REG_DATAMODUL, 
> MASK_DATAMODUL_MODULATION_SHAPE, DATAMODUL_MODULATION_SHAPE_NONE);
> +             case shaping1_0: return rmw(spi, REG_DATAMODUL, 
> MASK_DATAMODUL_MODULATION_SHAPE, DATAMODUL_MODULATION_SHAPE_1_0);
> +             case shaping0_5: return rmw(spi, REG_DATAMODUL, 
> MASK_DATAMODUL_MODULATION_SHAPE, DATAMODUL_MODULATION_SHAPE_0_3);
> +             case shaping0_3: return rmw(spi, REG_DATAMODUL, 
> MASK_DATAMODUL_MODULATION_SHAPE, DATAMODUL_MODULATION_SHAPE_0_5);
>               default:         INVALID_PARAM;
>               }
>       }
>       else
>       {
>               switch (modShaping) {
> -             case shapingOff: return WRITE_REG(REG_DATAMODUL, 
> (READ_REG(REG_DATAMODUL) & ~MASK_DATAMODUL_MODULATION_SHAPE) | 
> DATAMODUL_MODULATION_SHAPE_NONE);
> -             case shapingBR:  return WRITE_REG(REG_DATAMODUL, 
> (READ_REG(REG_DATAMODUL) & ~MASK_DATAMODUL_MODULATION_SHAPE) | 
> DATAMODUL_MODULATION_SHAPE_BR);
> -             case shaping2BR: return WRITE_REG(REG_DATAMODUL, 
> (READ_REG(REG_DATAMODUL) & ~MASK_DATAMODUL_MODULATION_SHAPE) | 
> DATAMODUL_MODULATION_SHAPE_2BR);
> +             case shapingOff: return rmw(spi, REG_DATAMODUL, 
> MASK_DATAMODUL_MODULATION_SHAPE, DATAMODUL_MODULATION_SHAPE_NONE);
> +             case shapingBR:  return rmw(spi, REG_DATAMODUL, 
> MASK_DATAMODUL_MODULATION_SHAPE, DATAMODUL_MODULATION_SHAPE_BR);
> +             case shaping2BR: return rmw(spi, REG_DATAMODUL, 
> MASK_DATAMODUL_MODULATION_SHAPE, DATAMODUL_MODULATION_SHAPE_2BR);
>               default:         INVALID_PARAM;
>               }
>       }
> @@ -144,17 +163,12 @@
>       u8 msb;
>       u8 lsb;
>
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: bit rate");
> -     #endif
> +     dev_dbg(&spi->dev, "set: bit rate");
>
>       // check input value
>       bitRate_min = F_OSC / 8388608; // 8388608 = 2^23;
>       if (bitRate < bitRate_min)
> -     {
> -             dev_dbg(&spi->dev, "setBitRate: illegal input param");
>               INVALID_PARAM;
> -     }
>
>       // calculate reg settings
>       bitRate_reg = (F_OSC / bitRate);
> @@ -163,9 +177,9 @@
>       lsb = (bitRate_reg&0xff);
>
>       // transmit to RF 69
> -     retval = WRITE_REG(REG_BITRATE_MSB, msb);
> +     retval = rf69_write_reg(spi, REG_BITRATE_MSB, msb);
>       if (retval)  return retval;
> -     retval = WRITE_REG(REG_BITRATE_LSB, lsb);
> +     retval = rf69_write_reg(spi, REG_BITRATE_LSB, lsb);
>       if (retval)  return retval;
>
>       return 0;
> @@ -181,15 +195,10 @@
>       u8 lsb;
>       u64 factor = 1000000; // to improve precision of calculation
>
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: deviation");
> -     #endif
> +     dev_dbg(&spi->dev, "set: deviation");
>
>       if (deviation < 600 || deviation > 500000) //TODO: Abh\E4ngigkeit von 
> Bitrate beachten!!
> -     {
> -             dev_dbg(&spi->dev, "set_deviation: illegal input param");
>               INVALID_PARAM;
> -     }
>
>       // calculat f step
>       f_step = F_OSC * factor;
> @@ -206,13 +215,13 @@
>       if (msb & ~FDEVMASB_MASK)
>       {
>               dev_dbg(&spi->dev, "set_deviation: err in calc of msb");
> -             INVALID_PARAM;
> +             return -EINVAL;
>       }
>
>       // write to chip
> -     retval = WRITE_REG(REG_FDEV_MSB, msb);
> +     retval = rf69_write_reg(spi, REG_FDEV_MSB, msb);
>       if (retval)  return retval;
> -     retval = WRITE_REG(REG_FDEV_LSB, lsb);
> +     retval = rf69_write_reg(spi, REG_FDEV_LSB, lsb);
>       if (retval)  return retval;
>
>       return 0;
> @@ -229,9 +238,7 @@
>       u8 lsb;
>       u64 factor = 1000000; // to improve precision of calculation
>
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: frequency");
> -     #endif
> +     dev_dbg(&spi->dev, "set: frequency");
>
>       // calculat f step
>       f_step = F_OSC * factor;
> @@ -250,16 +257,16 @@
>       f_reg = frequency * factor;
>       do_div(f_reg  , f_step);
>
> -     msb = (f_reg&0xff0000) >> 16;
> -     mid = (f_reg&0xff00)   >>  8;
> -     lsb = (f_reg&0xff);
> +     msb = (f_reg & 0xff0000) >> 16;
> +     mid = (f_reg & 0xff00)   >>  8;
> +     lsb = (f_reg & 0xff);
>
>       // write to chip
> -     retval = WRITE_REG(REG_FRF_MSB, msb);
> +     retval = rf69_write_reg(spi, REG_FRF_MSB, msb);
>       if (retval)  return retval;
> -     retval = WRITE_REG(REG_FRF_MID, mid);
> +     retval = rf69_write_reg(spi, REG_FRF_MID, mid);
>       if (retval)  return retval;
> -     retval = WRITE_REG(REG_FRF_LSB, lsb);
> +     retval = rf69_write_reg(spi, REG_FRF_LSB, lsb);
>       if (retval)  return retval;
>
>       return 0;
> @@ -267,48 +274,41 @@
>
>  int rf69_set_amplifier_0(struct spi_device *spi, enum optionOnOff 
> optionOnOff)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: amp #0");
> -     #endif
> +     dev_dbg(&spi->dev, "set: amp #0");
>
>       switch(optionOnOff) {
> -     case optionOn:  return WRITE_REG(REG_PALEVEL, (READ_REG(REG_PALEVEL) |  
> MASK_PALEVEL_PA0) );
> -     case optionOff: return WRITE_REG(REG_PALEVEL, (READ_REG(REG_PALEVEL) & 
> ~MASK_PALEVEL_PA0) );
> +     case optionOn:  return setBit(spi, REG_PALEVEL, MASK_PALEVEL_PA0);
> +     case optionOff: return rstBit(spi, REG_PALEVEL, MASK_PALEVEL_PA0);
>       default:        INVALID_PARAM;
>       }
>  }
>
>  int rf69_set_amplifier_1(struct spi_device *spi, enum optionOnOff 
> optionOnOff)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: amp #1");
> -     #endif
> +     dev_dbg(&spi->dev, "set: amp #1");
>
>       switch(optionOnOff) {
> -     case optionOn:  return WRITE_REG(REG_PALEVEL, (READ_REG(REG_PALEVEL) |  
> MASK_PALEVEL_PA1) );
> -     case optionOff: return WRITE_REG(REG_PALEVEL, (READ_REG(REG_PALEVEL) & 
> ~MASK_PALEVEL_PA1) );
> +     case optionOn:  return setBit(spi, REG_PALEVEL, MASK_PALEVEL_PA1);
> +     case optionOff: return rstBit(spi, REG_PALEVEL, MASK_PALEVEL_PA1);
>       default:        INVALID_PARAM;
>       }
>  }
>
>  int rf69_set_amplifier_2(struct spi_device *spi, enum optionOnOff 
> optionOnOff)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: amp #2");
> -     #endif
>
> +     dev_dbg(&spi->dev, "set: amp #2");
> +
>       switch(optionOnOff) {
> -     case optionOn:  return WRITE_REG(REG_PALEVEL, (READ_REG(REG_PALEVEL) |  
> MASK_PALEVEL_PA2) );
> -     case optionOff: return WRITE_REG(REG_PALEVEL, (READ_REG(REG_PALEVEL) & 
> ~MASK_PALEVEL_PA2) );
> +     case optionOn:  return setBit(spi, REG_PALEVEL, MASK_PALEVEL_PA2);
> +     case optionOff: return rstBit(spi, REG_PALEVEL, MASK_PALEVEL_PA2);
>       default:        INVALID_PARAM;
>       }
>  }
>
>  int rf69_set_output_power_level(struct spi_device *spi, u8 powerLevel)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: power level");
> -     #endif
> +     dev_dbg(&spi->dev, "set: power level");
>
>       powerLevel +=18; // TODO Abh\E4ngigkeit von PA0,1,2 setting
>
> @@ -317,63 +317,57 @@
>               INVALID_PARAM;
>
>       // write value
> -     return WRITE_REG(REG_PALEVEL, (READ_REG(REG_PALEVEL) & 
> ~MASK_PALEVEL_OUTPUT_POWER) | powerLevel);
> +     return rmw(spi, REG_PALEVEL, MASK_PALEVEL_OUTPUT_POWER, powerLevel);
>  }
>
>  int rf69_set_pa_ramp(struct spi_device *spi, enum paRamp paRamp)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: pa ramp");
> -     #endif
> +     dev_dbg(&spi->dev, "set: pa ramp");
>
>       switch(paRamp) {
> -     case ramp3400:  return WRITE_REG(REG_PARAMP, PARAMP_3400);
> -     case ramp2000:  return WRITE_REG(REG_PARAMP, PARAMP_2000);
> -     case ramp1000:  return WRITE_REG(REG_PARAMP, PARAMP_1000);
> -     case ramp500:   return WRITE_REG(REG_PARAMP, PARAMP_500);
> -     case ramp250:   return WRITE_REG(REG_PARAMP, PARAMP_250);
> -     case ramp125:   return WRITE_REG(REG_PARAMP, PARAMP_125);
> -     case ramp100:   return WRITE_REG(REG_PARAMP, PARAMP_100);
> -     case ramp62:    return WRITE_REG(REG_PARAMP, PARAMP_62);
> -     case ramp50:    return WRITE_REG(REG_PARAMP, PARAMP_50);
> -     case ramp40:    return WRITE_REG(REG_PARAMP, PARAMP_40);
> -     case ramp31:    return WRITE_REG(REG_PARAMP, PARAMP_31);
> -     case ramp25:    return WRITE_REG(REG_PARAMP, PARAMP_25);
> -     case ramp20:    return WRITE_REG(REG_PARAMP, PARAMP_20);
> -     case ramp15:    return WRITE_REG(REG_PARAMP, PARAMP_15);
> -     case ramp12:    return WRITE_REG(REG_PARAMP, PARAMP_12);
> -     case ramp10:    return WRITE_REG(REG_PARAMP, PARAMP_10);
> +     case ramp3400:  return rf69_write_reg(spi, REG_PARAMP, PARAMP_3400);
> +     case ramp2000:  return rf69_write_reg(spi, REG_PARAMP, PARAMP_2000);
> +     case ramp1000:  return rf69_write_reg(spi, REG_PARAMP, PARAMP_1000);
> +     case ramp500:   return rf69_write_reg(spi, REG_PARAMP, PARAMP_500);
> +     case ramp250:   return rf69_write_reg(spi, REG_PARAMP, PARAMP_250);
> +     case ramp125:   return rf69_write_reg(spi, REG_PARAMP, PARAMP_125);
> +     case ramp100:   return rf69_write_reg(spi, REG_PARAMP, PARAMP_100);
> +     case ramp62:    return rf69_write_reg(spi, REG_PARAMP, PARAMP_62);
> +     case ramp50:    return rf69_write_reg(spi, REG_PARAMP, PARAMP_50);
> +     case ramp40:    return rf69_write_reg(spi, REG_PARAMP, PARAMP_40);
> +     case ramp31:    return rf69_write_reg(spi, REG_PARAMP, PARAMP_31);
> +     case ramp25:    return rf69_write_reg(spi, REG_PARAMP, PARAMP_25);
> +     case ramp20:    return rf69_write_reg(spi, REG_PARAMP, PARAMP_20);
> +     case ramp15:    return rf69_write_reg(spi, REG_PARAMP, PARAMP_15);
> +     case ramp12:    return rf69_write_reg(spi, REG_PARAMP, PARAMP_12);
> +     case ramp10:    return rf69_write_reg(spi, REG_PARAMP, PARAMP_10);
>       default:        INVALID_PARAM;
>       }
>  }
>
>  int rf69_set_antenna_impedance(struct spi_device *spi, enum antennaImpedance 
> antennaImpedance)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: antenna impedance");
> -     #endif
> +     dev_dbg(&spi->dev, "set: antenna impedance");
>
>       switch(antennaImpedance) {
> -     case fiftyOhm:      return WRITE_REG(REG_LNA, (READ_REG(REG_LNA) & 
> ~MASK_LNA_ZIN) );
> -     case twohundretOhm: return WRITE_REG(REG_LNA, (READ_REG(REG_LNA) |  
> MASK_LNA_ZIN) );
> +     case fiftyOhm:      return rstBit(spi, REG_LNA, MASK_LNA_ZIN);
> +     case twohundretOhm: return setBit(spi, REG_LNA, MASK_LNA_ZIN);
>       default:            INVALID_PARAM;
>       }
>  }
>
>  int rf69_set_lna_gain(struct spi_device *spi, enum lnaGain lnaGain)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: lna gain");
> -     #endif
> +     dev_dbg(&spi->dev, "set: lna gain");
>
>       switch(lnaGain) {
> -     case automatic:  return WRITE_REG(REG_LNA, ( (READ_REG(REG_LNA) & 
> ~MASK_LNA_GAIN) | LNA_GAIN_AUTO) );
> -     case max:        return WRITE_REG(REG_LNA, ( (READ_REG(REG_LNA) & 
> ~MASK_LNA_GAIN) | LNA_GAIN_MAX) );
> -     case maxMinus6:  return WRITE_REG(REG_LNA, ( (READ_REG(REG_LNA) & 
> ~MASK_LNA_GAIN) | LNA_GAIN_MAX_MINUS_6) );
> -     case maxMinus12: return WRITE_REG(REG_LNA, ( (READ_REG(REG_LNA) & 
> ~MASK_LNA_GAIN) | LNA_GAIN_MAX_MINUS_12) );
> -     case maxMinus24: return WRITE_REG(REG_LNA, ( (READ_REG(REG_LNA) & 
> ~MASK_LNA_GAIN) | LNA_GAIN_MAX_MINUS_24) );
> -     case maxMinus36: return WRITE_REG(REG_LNA, ( (READ_REG(REG_LNA) & 
> ~MASK_LNA_GAIN) | LNA_GAIN_MAX_MINUS_36) );
> -     case maxMinus48: return WRITE_REG(REG_LNA, ( (READ_REG(REG_LNA) & 
> ~MASK_LNA_GAIN) | LNA_GAIN_MAX_MINUS_48) );
> +     case automatic:  return rmw(spi, REG_LNA, MASK_LNA_GAIN, LNA_GAIN_AUTO);
> +     case max:        return rmw(spi, REG_LNA, MASK_LNA_GAIN, LNA_GAIN_MAX);
> +     case maxMinus6:  return rmw(spi, REG_LNA, MASK_LNA_GAIN, 
> LNA_GAIN_MAX_MINUS_6);
> +     case maxMinus12: return rmw(spi, REG_LNA, MASK_LNA_GAIN, 
> LNA_GAIN_MAX_MINUS_12);
> +     case maxMinus24: return rmw(spi, REG_LNA, MASK_LNA_GAIN, 
> LNA_GAIN_MAX_MINUS_24);
> +     case maxMinus36: return rmw(spi, REG_LNA, MASK_LNA_GAIN, 
> LNA_GAIN_MAX_MINUS_36);
> +     case maxMinus48: return rmw(spi, REG_LNA, MASK_LNA_GAIN, 
> LNA_GAIN_MAX_MINUS_48);
>       default:         INVALID_PARAM;
>       }
>  }
> @@ -382,11 +376,9 @@
>  {
>       u8 currentValue;
>
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "get: lna gain");
> -     #endif
> +     dev_dbg(&spi->dev, "get: lna gain");
>
> -     currentValue = READ_REG(REG_LNA);
> +     currentValue = rf69_read_reg(spi, REG_LNA);
>
>       switch (currentValue & MASK_LNA_GAIN)
>       {
> @@ -404,32 +396,28 @@
>  static int rf69_set_dc_cut_off_frequency_intern(struct spi_device *spi ,u8 
> reg, enum dccPercent dccPercent)
>  {
>       switch (dccPercent) {
> -     case dcc16Percent:      return WRITE_REG(reg, ( (READ_REG(reg) & 
> ~MASK_BW_DCC_FREQ) | BW_DCC_16_PERCENT) );
> -     case dcc8Percent:       return WRITE_REG(reg, ( (READ_REG(reg) & 
> ~MASK_BW_DCC_FREQ) | BW_DCC_8_PERCENT) );
> -     case dcc4Percent:       return WRITE_REG(reg, ( (READ_REG(reg) & 
> ~MASK_BW_DCC_FREQ) | BW_DCC_4_PERCENT) );
> -     case dcc2Percent:       return WRITE_REG(reg, ( (READ_REG(reg) & 
> ~MASK_BW_DCC_FREQ) | BW_DCC_2_PERCENT) );
> -     case dcc1Percent:       return WRITE_REG(reg, ( (READ_REG(reg) & 
> ~MASK_BW_DCC_FREQ) | BW_DCC_1_PERCENT) );
> -     case dcc0_5Percent:     return WRITE_REG(reg, ( (READ_REG(reg) & 
> ~MASK_BW_DCC_FREQ) | BW_DCC_0_5_PERCENT) );
> -     case dcc0_25Percent:    return WRITE_REG(reg, ( (READ_REG(reg) & 
> ~MASK_BW_DCC_FREQ) | BW_DCC_0_25_PERCENT) );
> -     case dcc0_125Percent:   return WRITE_REG(reg, ( (READ_REG(reg) & 
> ~MASK_BW_DCC_FREQ) | BW_DCC_0_125_PERCENT) );
> +     case dcc16Percent:      return rmw(spi, reg, MASK_BW_DCC_FREQ, 
> BW_DCC_16_PERCENT);
> +     case dcc8Percent:       return rmw(spi, reg, MASK_BW_DCC_FREQ, 
> BW_DCC_8_PERCENT);
> +     case dcc4Percent:       return rmw(spi, reg, MASK_BW_DCC_FREQ, 
> BW_DCC_4_PERCENT);
> +     case dcc2Percent:       return rmw(spi, reg, MASK_BW_DCC_FREQ, 
> BW_DCC_2_PERCENT);
> +     case dcc1Percent:       return rmw(spi, reg, MASK_BW_DCC_FREQ, 
> BW_DCC_1_PERCENT);
> +     case dcc0_5Percent:     return rmw(spi, reg, MASK_BW_DCC_FREQ, 
> BW_DCC_0_5_PERCENT);
> +     case dcc0_25Percent:    return rmw(spi, reg, MASK_BW_DCC_FREQ, 
> BW_DCC_0_25_PERCENT);
> +     case dcc0_125Percent:   return rmw(spi, reg, MASK_BW_DCC_FREQ, 
> BW_DCC_0_125_PERCENT);
>       default:                INVALID_PARAM;
>       }
>  }
>
>  int rf69_set_dc_cut_off_frequency(struct spi_device *spi, enum dccPercent 
> dccPercent)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: cut off freq");
> -     #endif
> +     dev_dbg(&spi->dev, "set: cut off freq");
>
>       return rf69_set_dc_cut_off_frequency_intern(spi, REG_RXBW, dccPercent);
>  }
>
>  int rf69_set_dc_cut_off_frequency_during_afc(struct spi_device *spi, enum 
> dccPercent dccPercent)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: cut off freq during afc");
> -     #endif
> +     dev_dbg(&spi->dev, "set: cut off freq during afc");
>
>       return rf69_set_dc_cut_off_frequency_intern(spi, REG_AFCBW, dccPercent);
>  }
> @@ -442,10 +430,10 @@
>       if (exponent > 7)   INVALID_PARAM;
>       if ( (mantisse!=mantisse16) &&
>            (mantisse!=mantisse20) &&
> -             (mantisse!=mantisse24) ) INVALID_PARAM;
> +          (mantisse!=mantisse24) ) INVALID_PARAM;
>
>       // read old value
> -     newValue = READ_REG(reg);
> +     newValue = rf69_read_reg(spi, reg);
>
>       // "delete" mantisse and exponent = just keep the DCC setting
>       newValue = newValue & MASK_BW_DCC_FREQ;
> @@ -461,76 +449,66 @@
>       newValue = newValue | exponent;
>
>       // write back
> -     return WRITE_REG(reg, newValue);
> +     return rf69_write_reg(spi, reg, newValue);
>  }
>
>  int rf69_set_bandwidth(struct spi_device *spi, enum mantisse mantisse, u8 
> exponent)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: band width");
> -     #endif
> +     dev_dbg(&spi->dev, "set: band width");
>
>       return rf69_set_bandwidth_intern(spi, REG_RXBW, mantisse, exponent);
>  }
>
>  int rf69_set_bandwidth_during_afc(struct spi_device *spi, enum mantisse 
> mantisse, u8 exponent)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: band width during afc");
> -     #endif
> +     dev_dbg(&spi->dev, "set: band width during afc");
>
>       return rf69_set_bandwidth_intern(spi, REG_AFCBW, mantisse, exponent);
>  }
>
>  int rf69_set_ook_threshold_type(struct spi_device *spi, enum thresholdType 
> thresholdType)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: threshold type");
> -     #endif
> +     dev_dbg(&spi->dev, "set: threshold type");
>
>       switch (thresholdType)
>       {
> -     case fixed:     return WRITE_REG(REG_OOKPEAK, ( (READ_REG(REG_OOKPEAK) 
> & ~MASK_OOKPEAK_THRESTYPE) | OOKPEAK_THRESHTYPE_FIXED) );
> -     case peak:      return WRITE_REG(REG_OOKPEAK, ( (READ_REG(REG_OOKPEAK) 
> & ~MASK_OOKPEAK_THRESTYPE) | OOKPEAK_THRESHTYPE_PEAK) );
> -     case average:   return WRITE_REG(REG_OOKPEAK, ( (READ_REG(REG_OOKPEAK) 
> & ~MASK_OOKPEAK_THRESTYPE) | OOKPEAK_THRESHTYPE_AVERAGE) );
> +     case fixed:     return rmw(spi, REG_OOKPEAK, MASK_OOKPEAK_THRESTYPE, 
> OOKPEAK_THRESHTYPE_FIXED);
> +     case peak:      return rmw(spi, REG_OOKPEAK, MASK_OOKPEAK_THRESTYPE, 
> OOKPEAK_THRESHTYPE_PEAK);
> +     case average:   return rmw(spi, REG_OOKPEAK, MASK_OOKPEAK_THRESTYPE, 
> OOKPEAK_THRESHTYPE_AVERAGE);
>       default:        INVALID_PARAM;
>       }
>  }
>
>  int rf69_set_ook_threshold_step(struct spi_device *spi, enum thresholdStep 
> thresholdStep)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: threshold step");
> -     #endif
> +     dev_dbg(&spi->dev, "set: threshold step");
>
>       switch (thresholdStep) {
> -     case step_0_5db: return WRITE_REG(REG_OOKPEAK, ( (READ_REG(REG_OOKPEAK) 
> & ~MASK_OOKPEAK_THRESSTEP) | OOKPEAK_THRESHSTEP_0_5_DB) );
> -     case step_1_0db: return WRITE_REG(REG_OOKPEAK, ( (READ_REG(REG_OOKPEAK) 
> & ~MASK_OOKPEAK_THRESSTEP) | OOKPEAK_THRESHSTEP_1_0_DB) );
> -     case step_1_5db: return WRITE_REG(REG_OOKPEAK, ( (READ_REG(REG_OOKPEAK) 
> & ~MASK_OOKPEAK_THRESSTEP) | OOKPEAK_THRESHSTEP_1_5_DB) );
> -     case step_2_0db: return WRITE_REG(REG_OOKPEAK, ( (READ_REG(REG_OOKPEAK) 
> & ~MASK_OOKPEAK_THRESSTEP) | OOKPEAK_THRESHSTEP_2_0_DB) );
> -     case step_3_0db: return WRITE_REG(REG_OOKPEAK, ( (READ_REG(REG_OOKPEAK) 
> & ~MASK_OOKPEAK_THRESSTEP) | OOKPEAK_THRESHSTEP_3_0_DB) );
> -     case step_4_0db: return WRITE_REG(REG_OOKPEAK, ( (READ_REG(REG_OOKPEAK) 
> & ~MASK_OOKPEAK_THRESSTEP) | OOKPEAK_THRESHSTEP_4_0_DB) );
> -     case step_5_0db: return WRITE_REG(REG_OOKPEAK, ( (READ_REG(REG_OOKPEAK) 
> & ~MASK_OOKPEAK_THRESSTEP) | OOKPEAK_THRESHSTEP_5_0_DB) );
> -     case step_6_0db: return WRITE_REG(REG_OOKPEAK, ( (READ_REG(REG_OOKPEAK) 
> & ~MASK_OOKPEAK_THRESSTEP) | OOKPEAK_THRESHSTEP_6_0_DB) );
> +     case step_0_5db: return rmw(spi, REG_OOKPEAK, MASK_OOKPEAK_THRESSTEP, 
> OOKPEAK_THRESHSTEP_0_5_DB);
> +     case step_1_0db: return rmw(spi, REG_OOKPEAK, MASK_OOKPEAK_THRESSTEP, 
> OOKPEAK_THRESHSTEP_1_0_DB);
> +     case step_1_5db: return rmw(spi, REG_OOKPEAK, MASK_OOKPEAK_THRESSTEP, 
> OOKPEAK_THRESHSTEP_1_5_DB);
> +     case step_2_0db: return rmw(spi, REG_OOKPEAK, MASK_OOKPEAK_THRESSTEP, 
> OOKPEAK_THRESHSTEP_2_0_DB);
> +     case step_3_0db: return rmw(spi, REG_OOKPEAK, MASK_OOKPEAK_THRESSTEP, 
> OOKPEAK_THRESHSTEP_3_0_DB);
> +     case step_4_0db: return rmw(spi, REG_OOKPEAK, MASK_OOKPEAK_THRESSTEP, 
> OOKPEAK_THRESHSTEP_4_0_DB);
> +     case step_5_0db: return rmw(spi, REG_OOKPEAK, MASK_OOKPEAK_THRESSTEP, 
> OOKPEAK_THRESHSTEP_5_0_DB);
> +     case step_6_0db: return rmw(spi, REG_OOKPEAK, MASK_OOKPEAK_THRESSTEP, 
> OOKPEAK_THRESHSTEP_6_0_DB);
>       default:         INVALID_PARAM;
>       }
>  }
>
>  int rf69_set_ook_threshold_dec(struct spi_device *spi, enum 
> thresholdDecrement thresholdDecrement)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: threshold decrement");
> -     #endif
> +     dev_dbg(&spi->dev, "set: threshold decrement");
>
>       switch (thresholdDecrement) {
> -     case dec_every8th: return WRITE_REG(REG_OOKPEAK, ( 
> (READ_REG(REG_OOKPEAK) & ~MASK_OOKPEAK_THRESDEC) | 
> OOKPEAK_THRESHDEC_EVERY_8TH) );
> -     case dec_every4th: return WRITE_REG(REG_OOKPEAK, ( 
> (READ_REG(REG_OOKPEAK) & ~MASK_OOKPEAK_THRESDEC) | 
> OOKPEAK_THRESHDEC_EVERY_4TH) );
> -     case dec_every2nd: return WRITE_REG(REG_OOKPEAK, ( 
> (READ_REG(REG_OOKPEAK) & ~MASK_OOKPEAK_THRESDEC) | 
> OOKPEAK_THRESHDEC_EVERY_2ND) );
> -     case dec_once:     return WRITE_REG(REG_OOKPEAK, ( 
> (READ_REG(REG_OOKPEAK) & ~MASK_OOKPEAK_THRESDEC) | OOKPEAK_THRESHDEC_ONCE) );
> -     case dec_twice:    return WRITE_REG(REG_OOKPEAK, ( 
> (READ_REG(REG_OOKPEAK) & ~MASK_OOKPEAK_THRESDEC) | OOKPEAK_THRESHDEC_TWICE) );
> -     case dec_4times:   return WRITE_REG(REG_OOKPEAK, ( 
> (READ_REG(REG_OOKPEAK) & ~MASK_OOKPEAK_THRESDEC) | OOKPEAK_THRESHDEC_4_TIMES) 
> );
> -     case dec_8times:   return WRITE_REG(REG_OOKPEAK, ( 
> (READ_REG(REG_OOKPEAK) & ~MASK_OOKPEAK_THRESDEC) | OOKPEAK_THRESHDEC_8_TIMES) 
> );
> -     case dec_16times:  return WRITE_REG(REG_OOKPEAK, ( 
> (READ_REG(REG_OOKPEAK) & ~MASK_OOKPEAK_THRESDEC) | 
> OOKPEAK_THRESHDEC_16_TIMES) );
> +     case dec_every8th: return rmw(spi, REG_OOKPEAK, MASK_OOKPEAK_THRESDEC, 
> OOKPEAK_THRESHDEC_EVERY_8TH);
> +     case dec_every4th: return rmw(spi, REG_OOKPEAK, MASK_OOKPEAK_THRESDEC, 
> OOKPEAK_THRESHDEC_EVERY_4TH);
> +     case dec_every2nd: return rmw(spi, REG_OOKPEAK, MASK_OOKPEAK_THRESDEC, 
> OOKPEAK_THRESHDEC_EVERY_2ND);
> +     case dec_once:     return rmw(spi, REG_OOKPEAK, MASK_OOKPEAK_THRESDEC, 
> OOKPEAK_THRESHDEC_ONCE);
> +     case dec_twice:    return rmw(spi, REG_OOKPEAK, MASK_OOKPEAK_THRESDEC, 
> OOKPEAK_THRESHDEC_TWICE);
> +     case dec_4times:   return rmw(spi, REG_OOKPEAK, MASK_OOKPEAK_THRESDEC, 
> OOKPEAK_THRESHDEC_4_TIMES);
> +     case dec_8times:   return rmw(spi, REG_OOKPEAK, MASK_OOKPEAK_THRESDEC, 
> OOKPEAK_THRESHDEC_8_TIMES);
> +     case dec_16times:  return rmw(spi, REG_OOKPEAK, MASK_OOKPEAK_THRESDEC, 
> OOKPEAK_THRESHDEC_16_TIMES);
>       default:           INVALID_PARAM;
>       }
>  }
> @@ -542,9 +520,7 @@
>       u8 regaddr;
>       u8 regValue;
>
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: DIO mapping");
> -     #endif
> +     dev_dbg(&spi->dev, "set: DIO mapping");
>
>       // check DIO number
>       if (DIONumber > 5) INVALID_PARAM;
> @@ -559,88 +535,78 @@
>       }
>
>       // read reg
> -     regValue=READ_REG(regaddr);
> +     regValue=rf69_read_reg(spi, regaddr);
>       // delete old value
>       regValue = regValue & ~mask;
>       // add new value
>       regValue = regValue | value << shift;
>       // write back
> -     return WRITE_REG(regaddr,regValue);
> +     return rf69_write_reg(spi, regaddr,regValue);
>  }
>
>  bool rf69_get_flag(struct spi_device *spi, enum flag flag)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "get: flag");
> -     #endif
> +     dev_dbg(&spi->dev, "get: flag");
>
>       switch(flag) {
> -     case modeSwitchCompleted:     return (READ_REG(REG_IRQFLAGS1) & 
> MASK_IRQFLAGS1_MODE_READY);
> -     case readyToReceive:          return (READ_REG(REG_IRQFLAGS1) & 
> MASK_IRQFLAGS1_RX_READY);
> -     case readyToSend:             return (READ_REG(REG_IRQFLAGS1) & 
> MASK_IRQFLAGS1_TX_READY);
> -     case pllLocked:               return (READ_REG(REG_IRQFLAGS1) & 
> MASK_IRQFLAGS1_PLL_LOCK);
> -     case rssiExceededThreshold:   return (READ_REG(REG_IRQFLAGS1) & 
> MASK_IRQFLAGS1_RSSI);
> -     case timeout:                 return (READ_REG(REG_IRQFLAGS1) & 
> MASK_IRQFLAGS1_TIMEOUT);
> -     case automode:                return (READ_REG(REG_IRQFLAGS1) & 
> MASK_IRQFLAGS1_AUTOMODE);
> -     case syncAddressMatch:        return (READ_REG(REG_IRQFLAGS1) & 
> MASK_IRQFLAGS1_SYNC_ADDRESS_MATCH);
> -     case fifoFull:                return (READ_REG(REG_IRQFLAGS2) & 
> MASK_IRQFLAGS2_FIFO_FULL);
> -/*   case fifoNotEmpty:            return (READ_REG(REG_IRQFLAGS2) & 
> MASK_IRQFLAGS2_FIFO_NOT_EMPTY); */
> -     case fifoEmpty:               return !(READ_REG(REG_IRQFLAGS2) & 
> MASK_IRQFLAGS2_FIFO_NOT_EMPTY);
> -     case fifoLevelBelowThreshold: return (READ_REG(REG_IRQFLAGS2) & 
> MASK_IRQFLAGS2_FIFO_LEVEL);
> -     case fifoOverrun:             return (READ_REG(REG_IRQFLAGS2) & 
> MASK_IRQFLAGS2_FIFO_OVERRUN);
> -     case packetSent:              return (READ_REG(REG_IRQFLAGS2) & 
> MASK_IRQFLAGS2_PACKET_SENT);
> -     case payloadReady:            return (READ_REG(REG_IRQFLAGS2) & 
> MASK_IRQFLAGS2_PAYLOAD_READY);
> -     case crcOk:                   return (READ_REG(REG_IRQFLAGS2) & 
> MASK_IRQFLAGS2_CRC_OK);
> -     case batteryLow:              return (READ_REG(REG_IRQFLAGS2) & 
> MASK_IRQFLAGS2_LOW_BAT);
> +     case modeSwitchCompleted:     return (rf69_read_reg(spi, REG_IRQFLAGS1) 
> & MASK_IRQFLAGS1_MODE_READY);
> +     case readyToReceive:          return (rf69_read_reg(spi, REG_IRQFLAGS1) 
> & MASK_IRQFLAGS1_RX_READY);
> +     case readyToSend:             return (rf69_read_reg(spi, REG_IRQFLAGS1) 
> & MASK_IRQFLAGS1_TX_READY);
> +     case pllLocked:               return (rf69_read_reg(spi, REG_IRQFLAGS1) 
> & MASK_IRQFLAGS1_PLL_LOCK);
> +     case rssiExceededThreshold:   return (rf69_read_reg(spi, REG_IRQFLAGS1) 
> & MASK_IRQFLAGS1_RSSI);
> +     case timeout:                 return (rf69_read_reg(spi, REG_IRQFLAGS1) 
> & MASK_IRQFLAGS1_TIMEOUT);
> +     case automode:                return (rf69_read_reg(spi, REG_IRQFLAGS1) 
> & MASK_IRQFLAGS1_AUTOMODE);
> +     case syncAddressMatch:        return (rf69_read_reg(spi, REG_IRQFLAGS1) 
> & MASK_IRQFLAGS1_SYNC_ADDRESS_MATCH);
> +     case fifoFull:                return (rf69_read_reg(spi, REG_IRQFLAGS2) 
> & MASK_IRQFLAGS2_FIFO_FULL);
> +/*   case fifoNotEmpty:            return (rf69_read_reg(spi, REG_IRQFLAGS2) 
> & MASK_IRQFLAGS2_FIFO_NOT_EMPTY); */
> +     case fifoEmpty:               return !(rf69_read_reg(spi, 
> REG_IRQFLAGS2) & MASK_IRQFLAGS2_FIFO_NOT_EMPTY);
> +     case fifoLevelBelowThreshold: return (rf69_read_reg(spi, REG_IRQFLAGS2) 
> & MASK_IRQFLAGS2_FIFO_LEVEL);
> +     case fifoOverrun:             return (rf69_read_reg(spi, REG_IRQFLAGS2) 
> & MASK_IRQFLAGS2_FIFO_OVERRUN);
> +     case packetSent:              return (rf69_read_reg(spi, REG_IRQFLAGS2) 
> & MASK_IRQFLAGS2_PACKET_SENT);
> +     case payloadReady:            return (rf69_read_reg(spi, REG_IRQFLAGS2) 
> & MASK_IRQFLAGS2_PAYLOAD_READY);
> +     case crcOk:                   return (rf69_read_reg(spi, REG_IRQFLAGS2) 
> & MASK_IRQFLAGS2_CRC_OK);
> +     case batteryLow:              return (rf69_read_reg(spi, REG_IRQFLAGS2) 
> & MASK_IRQFLAGS2_LOW_BAT);
>       default:                      return false;
>       }
>  }
>
>  int rf69_reset_flag(struct spi_device *spi, enum flag flag)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "reset: flag");
> -     #endif
> +     dev_dbg(&spi->dev, "reset: flag");
>
>       switch(flag) {
> -     case rssiExceededThreshold: return WRITE_REG(REG_IRQFLAGS1, 
> MASK_IRQFLAGS1_RSSI);
> -     case syncAddressMatch:      return WRITE_REG(REG_IRQFLAGS1, 
> MASK_IRQFLAGS1_SYNC_ADDRESS_MATCH);
> -     case fifoOverrun:           return WRITE_REG(REG_IRQFLAGS2, 
> MASK_IRQFLAGS2_FIFO_OVERRUN);
> +     case rssiExceededThreshold: return rf69_write_reg(spi, REG_IRQFLAGS1, 
> MASK_IRQFLAGS1_RSSI);
> +     case syncAddressMatch:      return rf69_write_reg(spi, REG_IRQFLAGS1, 
> MASK_IRQFLAGS1_SYNC_ADDRESS_MATCH);
> +     case fifoOverrun:           return rf69_write_reg(spi, REG_IRQFLAGS2, 
> MASK_IRQFLAGS2_FIFO_OVERRUN);
>       default:                    INVALID_PARAM;
>       }
>  }
>
>  int rf69_set_rssi_threshold(struct spi_device *spi, u8 threshold)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: rssi threshold");
> -     #endif
> +     dev_dbg(&spi->dev, "set: rssi threshold");
>
>       /* no value check needed - u8 exactly matches register size */
>
> -     return WRITE_REG(REG_RSSITHRESH, threshold);
> +     return rf69_write_reg(spi, REG_RSSITHRESH, threshold);
>  }
>
>  int rf69_set_rx_start_timeout(struct spi_device *spi, u8 timeout)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: start timeout");
> -     #endif
> +     dev_dbg(&spi->dev, "set: start timeout");
>
>       /* no value check needed - u8 exactly matches register size */
>
> -     return WRITE_REG(REG_RXTIMEOUT1, timeout);
> +     return rf69_write_reg(spi, REG_RXTIMEOUT1, timeout);
>  }
>
>  int rf69_set_rssi_timeout(struct spi_device *spi, u8 timeout)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: rssi timeout");
> -     #endif
> +     dev_dbg(&spi->dev, "set: rssi timeout");
>
>       /* no value check needed - u8 exactly matches register size */
>
> -     return WRITE_REG(REG_RXTIMEOUT2, timeout);
> +     return rf69_write_reg(spi, REG_RXTIMEOUT2, timeout);
>  }
>
>  int rf69_set_preamble_length(struct spi_device *spi, u16 preambleLength)
> @@ -648,9 +614,7 @@
>       int retval;
>       u8 msb, lsb;
>
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: preample length");
> -     #endif
> +     dev_dbg(&spi->dev, "set: preample length");
>
>       /* no value check needed - u16 exactly matches register size */
>
> @@ -659,172 +623,146 @@
>       lsb = (preambleLength&0xff);
>
>       /* transmit to chip */
> -     retval = WRITE_REG(REG_PREAMBLE_MSB, msb);
> +     retval = rf69_write_reg(spi, REG_PREAMBLE_MSB, msb);
>       if (retval) return retval;
> -     retval = WRITE_REG(REG_PREAMBLE_LSB, lsb);
> +     retval = rf69_write_reg(spi, REG_PREAMBLE_LSB, lsb);
>
>       return retval;
>  }
>
>  int rf69_set_sync_enable(struct spi_device *spi, enum optionOnOff 
> optionOnOff)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: sync enable");
> -     #endif
> +     dev_dbg(&spi->dev, "set: sync enable");
>
>       switch(optionOnOff) {
> -     case optionOn:  return WRITE_REG(REG_SYNC_CONFIG, 
> (READ_REG(REG_SYNC_CONFIG) |  MASK_SYNC_CONFIG_SYNC_ON) );
> -     case optionOff: return WRITE_REG(REG_SYNC_CONFIG, 
> (READ_REG(REG_SYNC_CONFIG) & ~MASK_SYNC_CONFIG_SYNC_ON) );
> +     case optionOn:  return setBit(spi, REG_SYNC_CONFIG, 
> MASK_SYNC_CONFIG_SYNC_ON);
> +     case optionOff: return rstBit(spi, REG_SYNC_CONFIG, 
> MASK_SYNC_CONFIG_SYNC_ON);
>       default:        INVALID_PARAM;
>       }
>  }
>
>  int rf69_set_fifo_fill_condition(struct spi_device *spi, enum 
> fifoFillCondition fifoFillCondition)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: fifo fill condition");
> -     #endif
> +     dev_dbg(&spi->dev, "set: fifo fill condition");
>
>       switch(fifoFillCondition) {
> -     case always:             return WRITE_REG(REG_SYNC_CONFIG, 
> (READ_REG(REG_SYNC_CONFIG) |  MASK_SYNC_CONFIG_FIFO_FILL_CONDITION) );
> -     case afterSyncInterrupt: return WRITE_REG(REG_SYNC_CONFIG, 
> (READ_REG(REG_SYNC_CONFIG) & ~MASK_SYNC_CONFIG_FIFO_FILL_CONDITION) );
> +     case always:             return setBit(spi, REG_SYNC_CONFIG, 
> MASK_SYNC_CONFIG_FIFO_FILL_CONDITION);
> +     case afterSyncInterrupt: return rstBit(spi, REG_SYNC_CONFIG, 
> MASK_SYNC_CONFIG_FIFO_FILL_CONDITION);
>       default:                 INVALID_PARAM;
>       }
>  }
>
>  int rf69_set_sync_size(struct spi_device *spi, u8 syncSize)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: sync size");
> -     #endif
> +     dev_dbg(&spi->dev, "set: sync size");
>
>       // check input value
>       if (syncSize > 0x07)
>               INVALID_PARAM;
>
>       // write value
> -     return WRITE_REG(REG_SYNC_CONFIG, (READ_REG(REG_SYNC_CONFIG) & 
> ~MASK_SYNC_CONFIG_SYNC_SIZE) | (syncSize << 3) );
> +     return rmw(spi, REG_SYNC_CONFIG, MASK_SYNC_CONFIG_SYNC_SIZE, (syncSize 
> << 3));
>  }
>
>  int rf69_set_sync_tolerance(struct spi_device *spi, u8 syncTolerance)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: sync tolerance");
> -     #endif
> +     dev_dbg(&spi->dev, "set: sync tolerance");
>
>       // check input value
>       if (syncTolerance > 0x07)
>               INVALID_PARAM;
>
>       // write value
> -     return WRITE_REG(REG_SYNC_CONFIG, (READ_REG(REG_SYNC_CONFIG) & 
> ~MASK_SYNC_CONFIG_SYNC_SIZE) | syncTolerance);
> +     return rmw(spi, REG_SYNC_CONFIG, MASK_SYNC_CONFIG_SYNC_SIZE, 
> syncTolerance);
>  }
>
>  int rf69_set_sync_values(struct spi_device *spi, u8 syncValues[8])
>  {
>       int retval = 0;
>
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: sync values");
> -     #endif
> +     dev_dbg(&spi->dev, "set: sync values");
>
> -     retval += WRITE_REG(REG_SYNCVALUE1, syncValues[0]);
> -     retval += WRITE_REG(REG_SYNCVALUE2, syncValues[1]);
> -     retval += WRITE_REG(REG_SYNCVALUE3, syncValues[2]);
> -     retval += WRITE_REG(REG_SYNCVALUE4, syncValues[3]);
> -     retval += WRITE_REG(REG_SYNCVALUE5, syncValues[4]);
> -     retval += WRITE_REG(REG_SYNCVALUE6, syncValues[5]);
> -     retval += WRITE_REG(REG_SYNCVALUE7, syncValues[6]);
> -     retval += WRITE_REG(REG_SYNCVALUE8, syncValues[7]);
> +     retval += rf69_write_reg(spi, REG_SYNCVALUE1, syncValues[0]);
> +     retval += rf69_write_reg(spi, REG_SYNCVALUE2, syncValues[1]);
> +     retval += rf69_write_reg(spi, REG_SYNCVALUE3, syncValues[2]);
> +     retval += rf69_write_reg(spi, REG_SYNCVALUE4, syncValues[3]);
> +     retval += rf69_write_reg(spi, REG_SYNCVALUE5, syncValues[4]);
> +     retval += rf69_write_reg(spi, REG_SYNCVALUE6, syncValues[5]);
> +     retval += rf69_write_reg(spi, REG_SYNCVALUE7, syncValues[6]);
> +     retval += rf69_write_reg(spi, REG_SYNCVALUE8, syncValues[7]);
>
>       return retval;
>  }
>
>  int rf69_set_packet_format(struct spi_device * spi, enum packetFormat 
> packetFormat)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: packet format");
> -     #endif
> +     dev_dbg(&spi->dev, "set: packet format");
>
>       switch(packetFormat) {
> -     case packetLengthVar: return WRITE_REG(REG_PACKETCONFIG1, 
> (READ_REG(REG_PACKETCONFIG1) |  MASK_PACKETCONFIG1_PAKET_FORMAT_VARIABLE) );
> -     case packetLengthFix: return WRITE_REG(REG_PACKETCONFIG1, 
> (READ_REG(REG_PACKETCONFIG1) & ~MASK_PACKETCONFIG1_PAKET_FORMAT_VARIABLE) );
> +     case packetLengthVar: return setBit(spi, REG_PACKETCONFIG1, 
> MASK_PACKETCONFIG1_PAKET_FORMAT_VARIABLE);
> +     case packetLengthFix: return rstBit(spi, REG_PACKETCONFIG1, 
> MASK_PACKETCONFIG1_PAKET_FORMAT_VARIABLE);
>       default:              INVALID_PARAM;
>       }
>  }
>
>  int rf69_set_crc_enable(struct spi_device *spi, enum optionOnOff optionOnOff)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: crc enable");
> -     #endif
> +     dev_dbg(&spi->dev, "set: crc enable");
>
>       switch(optionOnOff) {
> -     case optionOn:  return WRITE_REG(REG_PACKETCONFIG1, 
> (READ_REG(REG_PACKETCONFIG1) |  MASK_PACKETCONFIG1_CRC_ON) );
> -     case optionOff: return WRITE_REG(REG_PACKETCONFIG1, 
> (READ_REG(REG_PACKETCONFIG1) & ~MASK_PACKETCONFIG1_CRC_ON) );
> +     case optionOn:  return setBit(spi, REG_PACKETCONFIG1, 
> MASK_PACKETCONFIG1_CRC_ON);
> +     case optionOff: return rstBit(spi, REG_PACKETCONFIG1, 
> MASK_PACKETCONFIG1_CRC_ON);
>       default:        INVALID_PARAM;
>       }
>  }
>
>  int rf69_set_adressFiltering(struct spi_device *spi, enum addressFiltering 
> addressFiltering)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: address filtering");
> -     #endif
> +     dev_dbg(&spi->dev, "set: address filtering");
>
>       switch (addressFiltering) {
> -     case filteringOff:           return WRITE_REG(REG_PACKETCONFIG1, ( 
> (READ_REG(REG_PACKETCONFIG1) & ~MASK_PACKETCONFIG1_ADDRESSFILTERING) | 
> PACKETCONFIG1_ADDRESSFILTERING_OFF) );
> -     case nodeAddress:            return WRITE_REG(REG_PACKETCONFIG1, ( 
> (READ_REG(REG_PACKETCONFIG1) & ~MASK_PACKETCONFIG1_ADDRESSFILTERING) | 
> PACKETCONFIG1_ADDRESSFILTERING_NODE) );
> -     case nodeOrBroadcastAddress: return WRITE_REG(REG_PACKETCONFIG1, ( 
> (READ_REG(REG_PACKETCONFIG1) & ~MASK_PACKETCONFIG1_ADDRESSFILTERING) | 
> PACKETCONFIG1_ADDRESSFILTERING_NODEBROADCAST) );
> +     case filteringOff:           return rmw(spi, REG_PACKETCONFIG1, 
> MASK_PACKETCONFIG1_ADDRESSFILTERING, PACKETCONFIG1_ADDRESSFILTERING_OFF);
> +     case nodeAddress:            return rmw(spi, REG_PACKETCONFIG1, 
> MASK_PACKETCONFIG1_ADDRESSFILTERING, PACKETCONFIG1_ADDRESSFILTERING_NODE);
> +     case nodeOrBroadcastAddress: return rmw(spi, REG_PACKETCONFIG1, 
> MASK_PACKETCONFIG1_ADDRESSFILTERING, 
> PACKETCONFIG1_ADDRESSFILTERING_NODEBROADCAST);
>       default:                     INVALID_PARAM;
>       }
>  }
>
>  int rf69_set_payload_length(struct spi_device *spi, u8 payloadLength)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: payload length");
> -     #endif
> +     dev_dbg(&spi->dev, "set: payload length");
>
> -     return WRITE_REG(REG_PAYLOAD_LENGTH, payloadLength);
> +     return rf69_write_reg(spi, REG_PAYLOAD_LENGTH, payloadLength);
>  }
>
>  u8  rf69_get_payload_length(struct spi_device *spi)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "get: payload length");
> -     #endif
> +     dev_dbg(&spi->dev, "get: payload length");
>
> -     return (u8) READ_REG(REG_PAYLOAD_LENGTH);
> +     return (u8) rf69_read_reg(spi, REG_PAYLOAD_LENGTH);
>  }
>
>  int rf69_set_node_address(struct spi_device *spi, u8 nodeAddress)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: node address");
> -     #endif
> +     dev_dbg(&spi->dev, "set: node address");
>
> -     return WRITE_REG(REG_NODEADRS, nodeAddress);
> +     return rf69_write_reg(spi, REG_NODEADRS, nodeAddress);
>  }
>
>  int rf69_set_broadcast_address(struct spi_device *spi, u8 broadcastAddress)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: broadcast address");
> -     #endif
> +     dev_dbg(&spi->dev, "set: broadcast address");
>
> -     return WRITE_REG(REG_BROADCASTADRS, broadcastAddress);
> +     return rf69_write_reg(spi, REG_BROADCASTADRS, broadcastAddress);
>  }
>
>  int rf69_set_tx_start_condition(struct spi_device *spi, enum 
> txStartCondition txStartCondition)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: start condition");
> -     #endif
> +     dev_dbg(&spi->dev, "set: start condition");
>
>       switch(txStartCondition) {
> -     case fifoLevel:    return WRITE_REG(REG_FIFO_THRESH, 
> (READ_REG(REG_FIFO_THRESH) & ~MASK_FIFO_THRESH_TXSTART) );
> -     case fifoNotEmpty: return WRITE_REG(REG_FIFO_THRESH, 
> (READ_REG(REG_FIFO_THRESH) |  MASK_FIFO_THRESH_TXSTART) );
> +     case fifoLevel:    return rstBit(spi, REG_FIFO_THRESH, 
> MASK_FIFO_THRESH_TXSTART);
> +     case fifoNotEmpty: return setBit(spi, REG_FIFO_THRESH, 
> MASK_FIFO_THRESH_TXSTART);
>       default:           INVALID_PARAM;
>       }
>  }
> @@ -833,33 +771,30 @@
>  {
>       int retval;
>
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: fifo threshold");
> -     #endif
> +     dev_dbg(&spi->dev, "set: fifo threshold");
>
> -     // check input value
> +     /* check input value */
>       if (threshold & 0x80)
>               INVALID_PARAM;
>
> -     // write value
> -     retval = WRITE_REG(REG_FIFO_THRESH, (READ_REG(REG_FIFO_THRESH) & 
> ~MASK_FIFO_THRESH_VALUE) | threshold);
> +     /* write value */
> +     retval = rmw(spi, REG_FIFO_THRESH, MASK_FIFO_THRESH_VALUE, threshold);
>       if (retval)
>               return retval;
>
> -     // access the fifo to activate new threshold
> -     return rf69_read_fifo (spi, (u8*) &retval, 1); // retval used as buffer
> +     /* access the fifo to activate new threshold
> +      * retval (mis)used as buffer here*/
> +     return rf69_read_fifo (spi, (u8*) &retval, 1);
>  }
>
>  int rf69_set_dagc(struct spi_device *spi, enum dagc dagc)
>  {
> -     #ifdef DEBUG
> -             dev_dbg(&spi->dev, "set: dagc");
> -     #endif
> +     dev_dbg(&spi->dev, "set: dagc");
>
>       switch(dagc) {
> -     case normalMode:                 return WRITE_REG(REG_TESTDAGC, 
> DAGC_NORMAL);
> -     case improve:                    return WRITE_REG(REG_TESTDAGC, 
> DAGC_IMPROVED_LOWBETA0);
> -     case improve4LowModulationIndex: return WRITE_REG(REG_TESTDAGC, 
> DAGC_IMPROVED_LOWBETA1);
> +     case normalMode:                 return rf69_write_reg(spi, 
> REG_TESTDAGC, DAGC_NORMAL);
> +     case improve:                    return rf69_write_reg(spi, 
> REG_TESTDAGC, DAGC_IMPROVED_LOWBETA0);
> +     case improve4LowModulationIndex: return rf69_write_reg(spi, 
> REG_TESTDAGC, DAGC_IMPROVED_LOWBETA1);
>       default:                         INVALID_PARAM;
>       }
>  }
> @@ -871,15 +806,14 @@
>       #ifdef DEBUG_FIFO_ACCESS
>               int i;
>       #endif
> +
>       struct spi_transfer transfer;
>       u8 local_buffer[FIFO_SIZE + 1];
>       int retval;
>
>       if (size > FIFO_SIZE)
>       {
> -             #ifdef DEBUG
> -                     dev_dbg(&spi->dev, "read fifo: passed in buffer bigger 
> then internal buffer \n");
> -             #endif
> +             dev_dbg(&spi->dev, "read fifo: passed in buffer bigger then 
> internal buffer \n");
>               return -EMSGSIZE;
>       }
>
> @@ -912,9 +846,7 @@
>
>       if (size > FIFO_SIZE)
>       {
> -             #ifdef DEBUG
> -                     dev_dbg(&spi->dev, "read fifo: passed in buffer bigger 
> then internal buffer \n");
> -             #endif
> +             dev_dbg(&spi->dev, "read fifo: passed in buffer bigger then 
> internal buffer \n");
>               return -EMSGSIZE;
>       }
>
>
>
>

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