To increase the readability of the register accesses, the abstraction
of the helpers was increased from simple read and write to set bit,
clear bit and read modify write bit.

Annotation: This patch contains a lot of long lines and camel case
var names. These long lines and camel case vars weren't introduced
by this patch, but were long and camel cased before.

Signed-off-by: Marcus Wolf <li...@wolf-entwicklungen.de>
---
 drivers/staging/pi433/rf69.c |  336 ++++++++++++++++++++++--------------------
 1 file changed, 180 insertions(+), 156 deletions(-)

diff --git a/drivers/staging/pi433/rf69.c b/drivers/staging/pi433/rf69.c
index e69a215..4f9878f 100644
--- a/drivers/staging/pi433/rf69.c
+++ b/drivers/staging/pi433/rf69.c
@@ -33,8 +33,32 @@
 
 /*-------------------------------------------------------------------------*/
 
-#define READ_REG(x)    rf69_read_reg (spi, x)
-#define WRITE_REG(x, y)        rf69_write_reg(spi, x, y)
+static int rf69_set_bit(struct spi_device *spi, u8 reg, u8 mask)
+{
+       u8 tmp;
+
+       tmp = rf69_read_reg(spi, reg);
+       tmp = tmp | mask;
+       return rf69_write_reg(spi, reg, tmp);
+}
+
+static int rf69_clear_bit(struct spi_device *spi, u8 reg, u8 mask)
+{
+       u8 tmp;
+
+       tmp = rf69_read_reg(spi, reg);
+       tmp = tmp & ~mask;
+       return rf69_write_reg(spi, reg, tmp);
+}
+
+static inline int rf69_read_mod_write(struct spi_device *spi, u8 reg, u8 mask, 
u8 value)
+{
+       u8 tmp;
+
+       tmp = rf69_read_reg(spi, reg);
+       tmp = (tmp & ~mask) | value;
+       return rf69_write_reg(spi, reg, tmp);
+}
 
 /*-------------------------------------------------------------------------*/
 
@@ -45,11 +69,11 @@ int rf69_set_mode(struct spi_device *spi, enum mode mode)
        #endif
 
        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 rf69_read_mod_write(spi, REG_OPMODE, 
MASK_OPMODE_MODE, OPMODE_MODE_TRANSMIT);
+       case receive:     return rf69_read_mod_write(spi, REG_OPMODE, 
MASK_OPMODE_MODE, OPMODE_MODE_RECEIVE);
+       case synthesizer: return rf69_read_mod_write(spi, REG_OPMODE, 
MASK_OPMODE_MODE, OPMODE_MODE_SYNTHESIZER);
+       case standby:     return rf69_read_mod_write(spi, REG_OPMODE, 
MASK_OPMODE_MODE, OPMODE_MODE_STANDBY);
+       case mode_sleep:  return rf69_read_mod_write(spi, REG_OPMODE, 
MASK_OPMODE_MODE, OPMODE_MODE_SLEEP);
        default:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -68,9 +92,9 @@ int rf69_set_data_mode(struct spi_device *spi, enum dataMode 
dataMode)
        #endif
 
        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 rf69_read_mod_write(spi, REG_DATAMODUL, 
MASK_DATAMODUL_MODE, DATAMODUL_MODE_PACKET);
+       case continuous:        return rf69_read_mod_write(spi, REG_DATAMODUL, 
MASK_DATAMODUL_MODE, DATAMODUL_MODE_CONTINUOUS);
+       case continuousNoSync:  return rf69_read_mod_write(spi, REG_DATAMODUL, 
MASK_DATAMODUL_MODE, DATAMODUL_MODE_CONTINUOUS_NOSYNC);
        default:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -84,8 +108,8 @@ int rf69_set_modulation(struct spi_device *spi, enum 
modulation modulation)
        #endif
 
        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);
+       case OOK: return rf69_read_mod_write(spi, REG_DATAMODUL, 
MASK_DATAMODUL_MODULATION_TYPE, DATAMODUL_MODULATION_TYPE_OOK);
+       case FSK: return rf69_read_mod_write(spi, REG_DATAMODUL, 
MASK_DATAMODUL_MODULATION_TYPE, DATAMODUL_MODULATION_TYPE_FSK);
        default:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -100,7 +124,7 @@ enum modulation rf69_get_modulation(struct spi_device *spi)
                dev_dbg(&spi->dev, "get: mode");
        #endif
 
-       currentValue = READ_REG(REG_DATAMODUL);
+       currentValue = rf69_read_reg(spi, REG_DATAMODUL);
 
        switch (currentValue & MASK_DATAMODUL_MODULATION_TYPE >> 3) { // TODO 
improvement: change 3 to define
        case DATAMODUL_MODULATION_TYPE_OOK: return OOK;
@@ -117,19 +141,19 @@ int rf69_set_modulation_shaping(struct spi_device *spi, 
enum modShaping modShapi
 
        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 rf69_read_mod_write(spi, REG_DATAMODUL, 
MASK_DATAMODUL_MODULATION_SHAPE, DATAMODUL_MODULATION_SHAPE_NONE);
+               case shaping1_0: return rf69_read_mod_write(spi, REG_DATAMODUL, 
MASK_DATAMODUL_MODULATION_SHAPE, DATAMODUL_MODULATION_SHAPE_1_0);
+               case shaping0_5: return rf69_read_mod_write(spi, REG_DATAMODUL, 
MASK_DATAMODUL_MODULATION_SHAPE, DATAMODUL_MODULATION_SHAPE_0_3);
+               case shaping0_3: return rf69_read_mod_write(spi, REG_DATAMODUL, 
MASK_DATAMODUL_MODULATION_SHAPE, DATAMODUL_MODULATION_SHAPE_0_5);
                default:
                        dev_dbg(&spi->dev, "set: illegal input param");
                        return -EINVAL;
                }
        } 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 rf69_read_mod_write(spi, REG_DATAMODUL, 
MASK_DATAMODUL_MODULATION_SHAPE, DATAMODUL_MODULATION_SHAPE_NONE);
+               case shapingBR:  return rf69_read_mod_write(spi, REG_DATAMODUL, 
MASK_DATAMODUL_MODULATION_SHAPE, DATAMODUL_MODULATION_SHAPE_BR);
+               case shaping2BR: return rf69_read_mod_write(spi, REG_DATAMODUL, 
MASK_DATAMODUL_MODULATION_SHAPE, DATAMODUL_MODULATION_SHAPE_2BR);
                default:
                        dev_dbg(&spi->dev, "set: illegal input param");
                        return -EINVAL;
@@ -163,11 +187,10 @@ int rf69_set_bit_rate(struct spi_device *spi, u16 bitRate)
        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;
 
@@ -211,11 +234,10 @@ int rf69_set_deviation(struct spi_device *spi, u32 
deviation)
        }
 
        // 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;
 
@@ -257,15 +279,13 @@ int rf69_set_frequency(struct spi_device *spi, u32 
frequency)
        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;
 
@@ -279,8 +299,8 @@ int rf69_set_amplifier_0(struct spi_device *spi, enum 
optionOnOff optionOnOff)
        #endif
 
        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 rf69_set_bit(spi, REG_PALEVEL, MASK_PALEVEL_PA0);
+       case optionOff: return rf69_clear_bit(spi, REG_PALEVEL, 
MASK_PALEVEL_PA0);
        default:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -294,8 +314,8 @@ int rf69_set_amplifier_1(struct spi_device *spi, enum 
optionOnOff optionOnOff)
        #endif
 
        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 rf69_set_bit(spi, REG_PALEVEL, MASK_PALEVEL_PA1);
+       case optionOff: return rf69_clear_bit(spi, REG_PALEVEL, 
MASK_PALEVEL_PA1);
        default:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -309,8 +329,8 @@ int rf69_set_amplifier_2(struct spi_device *spi, enum 
optionOnOff optionOnOff)
        #endif
 
        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 rf69_set_bit(spi, REG_PALEVEL, MASK_PALEVEL_PA2);
+       case optionOff: return rf69_clear_bit(spi, REG_PALEVEL, 
MASK_PALEVEL_PA2);
        default:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -332,7 +352,7 @@ int rf69_set_output_power_level(struct spi_device *spi, u8 
powerLevel)
        }
 
        // write value
-       return WRITE_REG(REG_PALEVEL, (READ_REG(REG_PALEVEL) & 
~MASK_PALEVEL_OUTPUT_POWER) | powerLevel);
+       return rf69_read_mod_write(spi, REG_PALEVEL, MASK_PALEVEL_OUTPUT_POWER, 
powerLevel);
 }
 
 int rf69_set_pa_ramp(struct spi_device *spi, enum paRamp paRamp)
@@ -342,22 +362,22 @@ int rf69_set_pa_ramp(struct spi_device *spi, enum paRamp 
paRamp)
        #endif
 
        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:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -371,8 +391,8 @@ int rf69_set_antenna_impedance(struct spi_device *spi, enum 
antennaImpedance ant
        #endif
 
        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 rf69_clear_bit(spi, REG_LNA, MASK_LNA_ZIN);
+       case twohundretOhm: return rf69_set_bit(spi, REG_LNA, MASK_LNA_ZIN);
        default:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -386,13 +406,13 @@ int rf69_set_lna_gain(struct spi_device *spi, enum 
lnaGain lnaGain)
        #endif
 
        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 rf69_read_mod_write(spi, REG_LNA, 
MASK_LNA_GAIN, LNA_GAIN_AUTO);
+       case max:        return rf69_read_mod_write(spi, REG_LNA, 
MASK_LNA_GAIN, LNA_GAIN_MAX);
+       case maxMinus6:  return rf69_read_mod_write(spi, REG_LNA, 
MASK_LNA_GAIN, LNA_GAIN_MAX_MINUS_6);
+       case maxMinus12: return rf69_read_mod_write(spi, REG_LNA, 
MASK_LNA_GAIN, LNA_GAIN_MAX_MINUS_12);
+       case maxMinus24: return rf69_read_mod_write(spi, REG_LNA, 
MASK_LNA_GAIN, LNA_GAIN_MAX_MINUS_24);
+       case maxMinus36: return rf69_read_mod_write(spi, REG_LNA, 
MASK_LNA_GAIN, LNA_GAIN_MAX_MINUS_36);
+       case maxMinus48: return rf69_read_mod_write(spi, REG_LNA, 
MASK_LNA_GAIN, LNA_GAIN_MAX_MINUS_48);
        default:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -407,7 +427,7 @@ enum lnaGain rf69_get_lna_gain(struct spi_device *spi)
                dev_dbg(&spi->dev, "get: lna gain");
        #endif
 
-       currentValue = READ_REG(REG_LNA);
+       currentValue = rf69_read_reg(spi, REG_LNA);
 
        switch (currentValue & MASK_LNA_CURRENT_GAIN >> 3) { // improvement: 
change 3 to define
        case LNA_GAIN_AUTO:         return automatic;
@@ -424,14 +444,14 @@ enum lnaGain rf69_get_lna_gain(struct spi_device *spi)
 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 rf69_read_mod_write(spi, reg, 
MASK_BW_DCC_FREQ, BW_DCC_16_PERCENT);
+       case dcc8Percent:       return rf69_read_mod_write(spi, reg, 
MASK_BW_DCC_FREQ, BW_DCC_8_PERCENT);
+       case dcc4Percent:       return rf69_read_mod_write(spi, reg, 
MASK_BW_DCC_FREQ, BW_DCC_4_PERCENT);
+       case dcc2Percent:       return rf69_read_mod_write(spi, reg, 
MASK_BW_DCC_FREQ, BW_DCC_2_PERCENT);
+       case dcc1Percent:       return rf69_read_mod_write(spi, reg, 
MASK_BW_DCC_FREQ, BW_DCC_1_PERCENT);
+       case dcc0_5Percent:     return rf69_read_mod_write(spi, reg, 
MASK_BW_DCC_FREQ, BW_DCC_0_5_PERCENT);
+       case dcc0_25Percent:    return rf69_read_mod_write(spi, reg, 
MASK_BW_DCC_FREQ, BW_DCC_0_25_PERCENT);
+       case dcc0_125Percent:   return rf69_read_mod_write(spi, reg, 
MASK_BW_DCC_FREQ, BW_DCC_0_125_PERCENT);
        default:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -475,7 +495,7 @@ static int rf69_set_bandwidth_intern(struct spi_device 
*spi, u8 reg,
        }
 
        // 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;
@@ -497,7 +517,7 @@ static int rf69_set_bandwidth_intern(struct spi_device 
*spi, u8 reg,
        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)
@@ -525,9 +545,9 @@ int rf69_set_ook_threshold_type(struct spi_device *spi, 
enum thresholdType thres
        #endif
 
        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 rf69_read_mod_write(spi, REG_OOKPEAK, 
MASK_OOKPEAK_THRESTYPE, OOKPEAK_THRESHTYPE_FIXED);
+       case peak:      return rf69_read_mod_write(spi, REG_OOKPEAK, 
MASK_OOKPEAK_THRESTYPE, OOKPEAK_THRESHTYPE_PEAK);
+       case average:   return rf69_read_mod_write(spi, REG_OOKPEAK, 
MASK_OOKPEAK_THRESTYPE, OOKPEAK_THRESHTYPE_AVERAGE);
        default:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -541,14 +561,14 @@ int rf69_set_ook_threshold_step(struct spi_device *spi, 
enum thresholdStep thres
        #endif
 
        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 rf69_read_mod_write(spi, REG_OOKPEAK, 
MASK_OOKPEAK_THRESSTEP, OOKPEAK_THRESHSTEP_0_5_DB);
+       case step_1_0db: return rf69_read_mod_write(spi, REG_OOKPEAK, 
MASK_OOKPEAK_THRESSTEP, OOKPEAK_THRESHSTEP_1_0_DB);
+       case step_1_5db: return rf69_read_mod_write(spi, REG_OOKPEAK, 
MASK_OOKPEAK_THRESSTEP, OOKPEAK_THRESHSTEP_1_5_DB);
+       case step_2_0db: return rf69_read_mod_write(spi, REG_OOKPEAK, 
MASK_OOKPEAK_THRESSTEP, OOKPEAK_THRESHSTEP_2_0_DB);
+       case step_3_0db: return rf69_read_mod_write(spi, REG_OOKPEAK, 
MASK_OOKPEAK_THRESSTEP, OOKPEAK_THRESHSTEP_3_0_DB);
+       case step_4_0db: return rf69_read_mod_write(spi, REG_OOKPEAK, 
MASK_OOKPEAK_THRESSTEP, OOKPEAK_THRESHSTEP_4_0_DB);
+       case step_5_0db: return rf69_read_mod_write(spi, REG_OOKPEAK, 
MASK_OOKPEAK_THRESSTEP, OOKPEAK_THRESHSTEP_5_0_DB);
+       case step_6_0db: return rf69_read_mod_write(spi, REG_OOKPEAK, 
MASK_OOKPEAK_THRESSTEP, OOKPEAK_THRESHSTEP_6_0_DB);
        default:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -562,14 +582,14 @@ int rf69_set_ook_threshold_dec(struct spi_device *spi, 
enum thresholdDecrement t
        #endif
 
        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 rf69_read_mod_write(spi, REG_OOKPEAK, 
MASK_OOKPEAK_THRESDEC, OOKPEAK_THRESHDEC_EVERY_8TH);
+       case dec_every4th: return rf69_read_mod_write(spi, REG_OOKPEAK, 
MASK_OOKPEAK_THRESDEC, OOKPEAK_THRESHDEC_EVERY_4TH);
+       case dec_every2nd: return rf69_read_mod_write(spi, REG_OOKPEAK, 
MASK_OOKPEAK_THRESDEC, OOKPEAK_THRESHDEC_EVERY_2ND);
+       case dec_once:     return rf69_read_mod_write(spi, REG_OOKPEAK, 
MASK_OOKPEAK_THRESDEC, OOKPEAK_THRESHDEC_ONCE);
+       case dec_twice:    return rf69_read_mod_write(spi, REG_OOKPEAK, 
MASK_OOKPEAK_THRESDEC, OOKPEAK_THRESHDEC_TWICE);
+       case dec_4times:   return rf69_read_mod_write(spi, REG_OOKPEAK, 
MASK_OOKPEAK_THRESDEC, OOKPEAK_THRESHDEC_4_TIMES);
+       case dec_8times:   return rf69_read_mod_write(spi, REG_OOKPEAK, 
MASK_OOKPEAK_THRESDEC, OOKPEAK_THRESHDEC_8_TIMES);
+       case dec_16times:  return rf69_read_mod_write(spi, REG_OOKPEAK, 
MASK_OOKPEAK_THRESDEC, OOKPEAK_THRESHDEC_16_TIMES);
        default:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -607,18 +627,18 @@ int rf69_set_dio_mapping(struct spi_device *spi, u8 
DIONumber, u8 value)
                mask = MASK_DIO5; shift = SHIFT_DIO5; regaddr = REG_DIOMAPPING2;
                break;
        default:
-               dev_dbg(&spi->dev, "set: illegal input param");
+       dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
        }
 
        // 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)
@@ -628,23 +648,23 @@ bool rf69_get_flag(struct spi_device *spi, enum flag flag)
        #endif
 
        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;
        }
 }
@@ -656,9 +676,9 @@ int rf69_reset_flag(struct spi_device *spi, enum flag flag)
        #endif
 
        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:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -673,7 +693,7 @@ int rf69_set_rssi_threshold(struct spi_device *spi, u8 
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)
@@ -684,7 +704,7 @@ int rf69_set_rx_start_timeout(struct spi_device *spi, u8 
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)
@@ -695,7 +715,7 @@ int rf69_set_rssi_timeout(struct spi_device *spi, u8 
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)
@@ -714,10 +734,12 @@ int rf69_set_preamble_length(struct spi_device *spi, u16 
preambleLength)
        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;
-       return 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)
@@ -727,8 +749,8 @@ int rf69_set_sync_enable(struct spi_device *spi, enum 
optionOnOff optionOnOff)
        #endif
 
        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 rf69_set_bit(spi, REG_SYNC_CONFIG, 
MASK_SYNC_CONFIG_SYNC_ON);
+       case optionOff: return rf69_clear_bit(spi, REG_SYNC_CONFIG, 
MASK_SYNC_CONFIG_SYNC_ON);
        default:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -742,8 +764,8 @@ int rf69_set_fifo_fill_condition(struct spi_device *spi, 
enum fifoFillCondition
        #endif
 
        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 rf69_set_bit(spi, REG_SYNC_CONFIG, 
MASK_SYNC_CONFIG_FIFO_FILL_CONDITION);
+       case afterSyncInterrupt: return rf69_clear_bit(spi, REG_SYNC_CONFIG, 
MASK_SYNC_CONFIG_FIFO_FILL_CONDITION);
        default:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -763,7 +785,7 @@ int rf69_set_sync_size(struct spi_device *spi, u8 syncSize)
        }
 
        // write value
-       return WRITE_REG(REG_SYNC_CONFIG, (READ_REG(REG_SYNC_CONFIG) & 
~MASK_SYNC_CONFIG_SYNC_SIZE) | (syncSize << 3));
+       return rf69_read_mod_write(spi, REG_SYNC_CONFIG, 
MASK_SYNC_CONFIG_SYNC_SIZE, (syncSize << 3));
 }
 
 int rf69_set_sync_tolerance(struct spi_device *spi, u8 syncTolerance)
@@ -779,7 +801,7 @@ int rf69_set_sync_tolerance(struct spi_device *spi, u8 
syncTolerance)
        }
 
        // write value
-       return WRITE_REG(REG_SYNC_CONFIG, (READ_REG(REG_SYNC_CONFIG) & 
~MASK_SYNC_CONFIG_SYNC_SIZE) | syncTolerance);
+       return rf69_read_mod_write(spi, REG_SYNC_CONFIG, 
MASK_SYNC_CONFIG_SYNC_SIZE, syncTolerance);
 }
 
 int rf69_set_sync_values(struct spi_device *spi, u8 syncValues[8])
@@ -790,14 +812,14 @@ int rf69_set_sync_values(struct spi_device *spi, u8 
syncValues[8])
                dev_dbg(&spi->dev, "set: sync values");
        #endif
 
-       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;
 }
@@ -809,8 +831,8 @@ int rf69_set_packet_format(struct spi_device *spi, enum 
packetFormat packetForma
        #endif
 
        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 rf69_set_bit(spi, REG_PACKETCONFIG1, 
MASK_PACKETCONFIG1_PAKET_FORMAT_VARIABLE);
+       case packetLengthFix: return rf69_clear_bit(spi, REG_PACKETCONFIG1, 
MASK_PACKETCONFIG1_PAKET_FORMAT_VARIABLE);
        default:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -824,8 +846,8 @@ int rf69_set_crc_enable(struct spi_device *spi, enum 
optionOnOff optionOnOff)
        #endif
 
        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 rf69_set_bit(spi, REG_PACKETCONFIG1, 
MASK_PACKETCONFIG1_CRC_ON);
+       case optionOff: return rf69_clear_bit(spi, REG_PACKETCONFIG1, 
MASK_PACKETCONFIG1_CRC_ON);
        default:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -839,9 +861,9 @@ int rf69_set_adressFiltering(struct spi_device *spi, enum 
addressFiltering addre
        #endif
 
        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 rf69_read_mod_write(spi, 
REG_PACKETCONFIG1, MASK_PACKETCONFIG1_ADDRESSFILTERING, 
PACKETCONFIG1_ADDRESSFILTERING_OFF);
+       case nodeAddress:            return rf69_read_mod_write(spi, 
REG_PACKETCONFIG1, MASK_PACKETCONFIG1_ADDRESSFILTERING, 
PACKETCONFIG1_ADDRESSFILTERING_NODE);
+       case nodeOrBroadcastAddress: return rf69_read_mod_write(spi, 
REG_PACKETCONFIG1, MASK_PACKETCONFIG1_ADDRESSFILTERING, 
PACKETCONFIG1_ADDRESSFILTERING_NODEBROADCAST);
        default:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -854,7 +876,7 @@ int rf69_set_payload_length(struct spi_device *spi, u8 
payloadLength)
                dev_dbg(&spi->dev, "set: payload length");
        #endif
 
-       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)
@@ -863,7 +885,7 @@ u8  rf69_get_payload_length(struct spi_device *spi)
                dev_dbg(&spi->dev, "get: payload length");
        #endif
 
-       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)
@@ -872,7 +894,7 @@ int rf69_set_node_address(struct spi_device *spi, u8 
nodeAddress)
                dev_dbg(&spi->dev, "set: node address");
        #endif
 
-       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)
@@ -881,7 +903,7 @@ int rf69_set_broadcast_address(struct spi_device *spi, u8 
broadcastAddress)
                dev_dbg(&spi->dev, "set: broadcast address");
        #endif
 
-       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)
@@ -891,8 +913,8 @@ int rf69_set_tx_start_condition(struct spi_device *spi, 
enum txStartCondition tx
        #endif
 
        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 rf69_clear_bit(spi, REG_FIFO_THRESH, 
MASK_FIFO_THRESH_TXSTART);
+       case fifoNotEmpty: return rf69_set_bit(spi, REG_FIFO_THRESH, 
MASK_FIFO_THRESH_TXSTART);
        default:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
@@ -907,19 +929,21 @@ int rf69_set_fifo_threshold(struct spi_device *spi, u8 
threshold)
                dev_dbg(&spi->dev, "set: fifo threshold");
        #endif
 
-       // check input value
+       /* check input value */
        if (threshold & 0x80) {
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
        }
 
-       // write value
-       retval = WRITE_REG(REG_FIFO_THRESH, (READ_REG(REG_FIFO_THRESH) & 
~MASK_FIFO_THRESH_VALUE) | threshold);
+       /* write value */
+       retval = rf69_read_mod_write(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)
@@ -929,9 +953,9 @@ int rf69_set_dagc(struct spi_device *spi, enum dagc dagc)
        #endif
 
        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:
                dev_dbg(&spi->dev, "set: illegal input param");
                return -EINVAL;
-- 
1.7.10.4

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