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Subject[PATCH 2/5] iio: adc: ad7791: define/use own IIO channel macros
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This driver seems to use most of the AD_SD_*_CHANNEL. This change will move
them in the driver. The intent is that if a new part comes along which
would require tweaks per IIO channel, these should be doable in the driver.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
---
drivers/iio/adc/ad7791.c | 62 +++++++++++++++++++++++++++++++++++-----
1 file changed, 55 insertions(+), 7 deletions(-)

diff --git a/drivers/iio/adc/ad7791.c b/drivers/iio/adc/ad7791.c
index abb239392631..ba22808507d0 100644
--- a/drivers/iio/adc/ad7791.c
+++ b/drivers/iio/adc/ad7791.c
@@ -64,25 +64,73 @@
#define AD7791_MODE_SEL_MASK (0x3 << 6)
#define AD7791_MODE_SEL(x) ((x) << 6)

+#define __AD7991_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+ _storagebits, _shift, _extend_name, _type, _mask_all) \
+ { \
+ .type = (_type), \
+ .differential = (_channel2 == -1 ? 0 : 1), \
+ .indexed = 1, \
+ .channel = (_channel1), \
+ .channel2 = (_channel2), \
+ .address = (_address), \
+ .extend_name = (_extend_name), \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+ BIT(IIO_CHAN_INFO_OFFSET), \
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
+ .info_mask_shared_by_all = _mask_all, \
+ .scan_index = (_si), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = (_bits), \
+ .storagebits = (_storagebits), \
+ .shift = (_shift), \
+ .endianness = IIO_BE, \
+ }, \
+ }
+
+#define AD7991_SHORTED_CHANNEL(_si, _channel, _address, _bits, \
+ _storagebits, _shift) \
+ __AD7991_CHANNEL(_si, _channel, _channel, _address, _bits, \
+ _storagebits, _shift, "shorted", IIO_VOLTAGE, \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD7991_CHANNEL(_si, _channel, _address, _bits, \
+ _storagebits, _shift) \
+ __AD7991_CHANNEL(_si, _channel, -1, _address, _bits, \
+ _storagebits, _shift, NULL, IIO_VOLTAGE, \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD7991_DIFF_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+ _storagebits, _shift) \
+ __AD7991_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+ _storagebits, _shift, NULL, IIO_VOLTAGE, \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD7991_SUPPLY_CHANNEL(_si, _channel, _address, _bits, _storagebits, \
+ _shift) \
+ __AD7991_CHANNEL(_si, _channel, -1, _address, _bits, \
+ _storagebits, _shift, "supply", IIO_VOLTAGE, \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
#define DECLARE_AD7787_CHANNELS(name, bits, storagebits) \
const struct iio_chan_spec name[] = { \
- AD_SD_DIFF_CHANNEL(0, 0, 0, AD7791_CH_AIN1P_AIN1N, \
+ AD7991_DIFF_CHANNEL(0, 0, 0, AD7791_CH_AIN1P_AIN1N, \
(bits), (storagebits), 0), \
- AD_SD_CHANNEL(1, 1, AD7791_CH_AIN2, (bits), (storagebits), 0), \
- AD_SD_SHORTED_CHANNEL(2, 0, AD7791_CH_AIN1N_AIN1N, \
+ AD7991_CHANNEL(1, 1, AD7791_CH_AIN2, (bits), (storagebits), 0), \
+ AD7991_SHORTED_CHANNEL(2, 0, AD7791_CH_AIN1N_AIN1N, \
(bits), (storagebits), 0), \
- AD_SD_SUPPLY_CHANNEL(3, 2, AD7791_CH_AVDD_MONITOR, \
+ AD7991_SUPPLY_CHANNEL(3, 2, AD7791_CH_AVDD_MONITOR, \
(bits), (storagebits), 0), \
IIO_CHAN_SOFT_TIMESTAMP(4), \
}

#define DECLARE_AD7791_CHANNELS(name, bits, storagebits) \
const struct iio_chan_spec name[] = { \
- AD_SD_DIFF_CHANNEL(0, 0, 0, AD7791_CH_AIN1P_AIN1N, \
+ AD7991_DIFF_CHANNEL(0, 0, 0, AD7791_CH_AIN1P_AIN1N, \
(bits), (storagebits), 0), \
- AD_SD_SHORTED_CHANNEL(1, 0, AD7791_CH_AIN1N_AIN1N, \
+ AD7991_SHORTED_CHANNEL(1, 0, AD7791_CH_AIN1N_AIN1N, \
(bits), (storagebits), 0), \
- AD_SD_SUPPLY_CHANNEL(2, 1, AD7791_CH_AVDD_MONITOR, \
+ AD7991_SUPPLY_CHANNEL(2, 1, AD7791_CH_AVDD_MONITOR, \
(bits), (storagebits), 0), \
IIO_CHAN_SOFT_TIMESTAMP(3), \
}
--
2.20.1
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