#include "../iio.h"
#include "../sysfs.h"
-#include "../buffer_generic.h"
+#include "../buffer.h"
#include "../ring_sw.h"
#include "../trigger.h"
#include "../trigger_consumer.h"
return ret;
}
-static int ad7793_scan_from_ring(struct ad7793_state *st, unsigned ch, int *val)
-{
- struct iio_buffer *ring = iio_priv_to_dev(st)->buffer;
- int ret;
- s64 dat64[2];
- u32 *dat32 = (u32 *)dat64;
-
- if (!(test_bit(ch, ring->scan_mask)))
- return -EBUSY;
-
- ret = ring->access->read_last(ring, (u8 *) &dat64);
- if (ret)
- return ret;
-
- *val = *dat32;
-
- return 0;
-}
-
static int ad7793_ring_preenable(struct iio_dev *indio_dev)
{
struct ad7793_state *st = iio_priv(indio_dev);
size_t d_size;
unsigned channel;
- if (!ring->scan_count)
+ if (bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength))
return -EINVAL;
- channel = find_first_bit(ring->scan_mask,
+ channel = find_first_bit(indio_dev->active_scan_mask,
indio_dev->masklength);
- d_size = ring->scan_count *
- indio_dev->channels[0].scan_type.storagebits / 8;
+ d_size = bitmap_weight(indio_dev->active_scan_mask,
+ indio_dev->masklength) *
+ indio_dev->channels[0].scan_type.storagebits / 8;
if (ring->scan_timestamp) {
d_size += sizeof(s64);
s64 dat64[2];
s32 *dat32 = (s32 *)dat64;
- if (ring->scan_count)
+ if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength))
__ad7793_read_reg(st, 1, 1, AD7793_REG_DATA,
dat32,
indio_dev->channels[0].scan_type.realbits/8);
}
/* Ring buffer functions - here trigger setup related */
- indio_dev->buffer->setup_ops = &ad7793_ring_setup_ops;
+ indio_dev->setup_ops = &ad7793_ring_setup_ops;
/* Flag that polled ring buffering is possible */
indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
return IRQ_HANDLED;
}
+static struct iio_trigger_ops ad7793_trigger_ops = {
+ .owner = THIS_MODULE,
+};
+
static int ad7793_probe_trigger(struct iio_dev *indio_dev)
{
struct ad7793_state *st = iio_priv(indio_dev);
ret = -ENOMEM;
goto error_ret;
}
+ st->trig->ops = &ad7793_trigger_ops;
ret = request_irq(st->spi->irq,
ad7793_data_rdy_trig_poll,
disable_irq_nosync(st->spi->irq);
st->irq_dis = true;
st->trig->dev.parent = &st->spi->dev;
- st->trig->owner = THIS_MODULE;
st->trig->private_data = indio_dev;
ret = iio_trigger_register(st->trig);
case 0:
mutex_lock(&indio_dev->mlock);
if (iio_buffer_enabled(indio_dev))
- ret = ad7793_scan_from_ring(st,
- chan->scan_index, &smpl);
+ ret = -EBUSY;
else
ret = ad7793_read(st, chan->address,
chan->scan_type.realbits / 8, &smpl);
return IIO_VAL_INT;
- case (1 << IIO_CHAN_INFO_SCALE_SHARED):
- *val = st->scale_avail[(st->conf >> 8) & 0x7][0];
- *val2 = st->scale_avail[(st->conf >> 8) & 0x7][1];
-
- return IIO_VAL_INT_PLUS_NANO;
-
- case (1 << IIO_CHAN_INFO_SCALE_SEPARATE):
+ case IIO_CHAN_INFO_SCALE:
switch (chan->type) {
case IIO_VOLTAGE:
- /* 1170mV / 2^23 * 6 */
- scale_uv = (1170ULL * 100000000ULL * 6ULL)
- >> (chan->scan_type.realbits -
- (unipolar ? 0 : 1));
+ if (chan->differential) {
+ *val = st->
+ scale_avail[(st->conf >> 8) & 0x7][0];
+ *val2 = st->
+ scale_avail[(st->conf >> 8) & 0x7][1];
+ return IIO_VAL_INT_PLUS_NANO;
+ } else {
+ /* 1170mV / 2^23 * 6 */
+ scale_uv = (1170ULL * 100000000ULL * 6ULL)
+ >> (chan->scan_type.realbits -
+ (unipolar ? 0 : 1));
+ }
break;
case IIO_TEMP:
/* Always uses unity gain and internal ref */
}
switch (mask) {
- case (1 << IIO_CHAN_INFO_SCALE_SHARED):
+ case IIO_CHAN_INFO_SCALE:
ret = -EINVAL;
for (i = 0; i < ARRAY_SIZE(st->scale_avail); i++)
if (val2 == st->scale_avail[i][1]) {
.channel = 0,
.channel2 = 0,
.address = AD7793_CH_AIN1P_AIN1M,
- .info_mask = (1 << IIO_CHAN_INFO_SCALE_SHARED),
+ .info_mask = IIO_CHAN_INFO_SCALE_SHARED_BIT,
.scan_index = 0,
.scan_type = IIO_ST('s', 24, 32, 0)
},
.channel = 1,
.channel2 = 1,
.address = AD7793_CH_AIN2P_AIN2M,
- .info_mask = (1 << IIO_CHAN_INFO_SCALE_SHARED),
+ .info_mask = IIO_CHAN_INFO_SCALE_SHARED_BIT,
.scan_index = 1,
.scan_type = IIO_ST('s', 24, 32, 0)
},
.channel = 2,
.channel2 = 2,
.address = AD7793_CH_AIN3P_AIN3M,
- .info_mask = (1 << IIO_CHAN_INFO_SCALE_SHARED),
+ .info_mask = IIO_CHAN_INFO_SCALE_SHARED_BIT,
.scan_index = 2,
.scan_type = IIO_ST('s', 24, 32, 0)
},
.channel = 2,
.channel2 = 2,
.address = AD7793_CH_AIN1M_AIN1M,
- .info_mask = (1 << IIO_CHAN_INFO_SCALE_SHARED),
+ .info_mask = IIO_CHAN_INFO_SCALE_SHARED_BIT,
.scan_index = 2,
.scan_type = IIO_ST('s', 24, 32, 0)
},
.indexed = 1,
.channel = 0,
.address = AD7793_CH_TEMP,
- .info_mask = (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
+ .info_mask = IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
.scan_index = 4,
.scan_type = IIO_ST('s', 24, 32, 0),
},
.indexed = 1,
.channel = 4,
.address = AD7793_CH_AVDD_MONITOR,
- .info_mask = (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
+ .info_mask = IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
.scan_index = 5,
.scan_type = IIO_ST('s', 24, 32, 0),
},
.channel = 0,
.channel2 = 0,
.address = AD7793_CH_AIN1P_AIN1M,
- .info_mask = (1 << IIO_CHAN_INFO_SCALE_SHARED),
+ .info_mask = IIO_CHAN_INFO_SCALE_SHARED_BIT,
.scan_index = 0,
.scan_type = IIO_ST('s', 16, 32, 0)
},
.channel = 1,
.channel2 = 1,
.address = AD7793_CH_AIN2P_AIN2M,
- .info_mask = (1 << IIO_CHAN_INFO_SCALE_SHARED),
+ .info_mask = IIO_CHAN_INFO_SCALE_SHARED_BIT,
.scan_index = 1,
.scan_type = IIO_ST('s', 16, 32, 0)
},
.channel = 2,
.channel2 = 2,
.address = AD7793_CH_AIN3P_AIN3M,
- .info_mask = (1 << IIO_CHAN_INFO_SCALE_SHARED),
+ .info_mask = IIO_CHAN_INFO_SCALE_SHARED_BIT,
.scan_index = 2,
.scan_type = IIO_ST('s', 16, 32, 0)
},
.channel = 2,
.channel2 = 2,
.address = AD7793_CH_AIN1M_AIN1M,
- .info_mask = (1 << IIO_CHAN_INFO_SCALE_SHARED),
+ .info_mask = IIO_CHAN_INFO_SCALE_SHARED_BIT,
.scan_index = 2,
.scan_type = IIO_ST('s', 16, 32, 0)
},
.indexed = 1,
.channel = 0,
.address = AD7793_CH_TEMP,
- .info_mask = (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
+ .info_mask = IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
.scan_index = 4,
.scan_type = IIO_ST('s', 16, 32, 0),
},
.indexed = 1,
.channel = 4,
.address = AD7793_CH_AVDD_MONITOR,
- .info_mask = (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
+ .info_mask = IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
.scan_index = 5,
.scan_type = IIO_ST('s', 16, 32, 0),
},
{"ad7793", ID_AD7793},
{}
};
+MODULE_DEVICE_TABLE(spi, ad7793_id);
static struct spi_driver ad7793_driver = {
.driver = {
.name = "ad7793",
- .bus = &spi_bus_type,
.owner = THIS_MODULE,
},
.probe = ad7793_probe,
.remove = __devexit_p(ad7793_remove),
.id_table = ad7793_id,
};
-
-static int __init ad7793_init(void)
-{
- return spi_register_driver(&ad7793_driver);
-}
-module_init(ad7793_init);
-
-static void __exit ad7793_exit(void)
-{
- spi_unregister_driver(&ad7793_driver);
-}
-module_exit(ad7793_exit);
+module_spi_driver(ad7793_driver);
MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
MODULE_DESCRIPTION("Analog Devices AD7792/3 ADC");