iio: adc: driver for ti adc081s/adc101s/adc121s

    Add Linux device driver for TI single-channel CMOS
    8/10/12-bit analog-to-digital converter with a
    high-speed serial interface.

Signed-off-by: Milan Stevanovic <milan.o.stevanovic@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/adc/ad7476.c b/drivers/iio/adc/ad7476.c
index b7706bf10ffe8208b98b136e0a2abd384b1462e3..0ea0f9066a53692e296d83bea664d6310b8eee0a 100644 (file)
--- a/drivers/iio/adc/ad7476.c
+++ b/drivers/iio/adc/ad7476.c
@@ -1,5 +1,6 @@
 /*
- * AD7466/7/8 AD7476/5/7/8 (A) SPI ADC driver
+ * Analog Devices AD7466/7/8 AD7476/5/7/8 (A) SPI ADC driver
+ * TI ADC081S/ADC101S/ADC121S 8/10/12-bit SPI ADC driver
  *
  * Copyright 2010 Analog Devices Inc.
  *
@@ -56,6 +57,9 @@ enum ad7476_supported_device_ids {
        ID_AD7468,
        ID_AD7495,
        ID_AD7940,
+       ID_ADC081S,
+       ID_ADC101S,
+       ID_ADC121S,
 };
 
 static irqreturn_t ad7476_trigger_handler(int irq, void  *p)
@@ -147,6 +151,8 @@ static int ad7476_read_raw(struct iio_dev *indio_dev,
        },                                                      \
 }
 
+#define ADC081S_CHAN(bits) _AD7476_CHAN((bits), 12 - (bits), \
+               BIT(IIO_CHAN_INFO_RAW))
 #define AD7476_CHAN(bits) _AD7476_CHAN((bits), 13 - (bits), \
                BIT(IIO_CHAN_INFO_RAW))
 #define AD7940_CHAN(bits) _AD7476_CHAN((bits), 15 - (bits), \
@@ -192,6 +198,18 @@ static const struct ad7476_chip_info ad7476_chip_info_tbl[] = {
                .channel[0] = AD7940_CHAN(14),
                .channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
        },
+       [ID_ADC081S] = {
+               .channel[0] = ADC081S_CHAN(8),
+               .channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+       },
+       [ID_ADC101S] = {
+               .channel[0] = ADC081S_CHAN(10),
+               .channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+       },
+       [ID_ADC121S] = {
+               .channel[0] = ADC081S_CHAN(12),
+               .channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+       },
 };
 
 static const struct iio_info ad7476_info = {
@@ -294,6 +312,9 @@ static const struct spi_device_id ad7476_id[] = {
        {"ad7910", ID_AD7467},
        {"ad7920", ID_AD7466},
        {"ad7940", ID_AD7940},
+       {"adc081s", ID_ADC081S},
+       {"adc101s", ID_ADC101S},
+       {"adc121s", ID_ADC121S},
        {}
 };
 MODULE_DEVICE_TABLE(spi, ad7476_id);