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author | Linus Torvalds | 2012-01-09 21:18:17 +0100 |
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committer | Linus Torvalds | 2012-01-09 21:18:17 +0100 |
commit | 12e55508921865aefdd80fd17afe70c191afbd1b (patch) | |
tree | 476b3226fd9602b36bed0934409959bdd24a7eb5 /drivers/staging/iio/adc/ad7192.c | |
parent | Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/greg... (diff) | |
parent | net/hyperv: Add support for jumbo frame up to 64KB (diff) | |
download | kernel-qcow2-linux-12e55508921865aefdd80fd17afe70c191afbd1b.tar.gz kernel-qcow2-linux-12e55508921865aefdd80fd17afe70c191afbd1b.tar.xz kernel-qcow2-linux-12e55508921865aefdd80fd17afe70c191afbd1b.zip |
Merge branch 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
* 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (466 commits)
net/hyperv: Add support for jumbo frame up to 64KB
net/hyperv: Add NETVSP protocol version negotiation
net/hyperv: Remove unnecessary kmap_atomic in netvsc driver
staging/rtl8192e: Register against lib80211
staging/rtl8192e: Convert to lib80211_crypt_info
staging/rtl8192e: Convert to lib80211_crypt_data and lib80211_crypt_ops
staging/rtl8192e: Add lib80211.h to rtllib.h
staging/mei: add watchdog device registration wrappers
drm/omap: GEM, deal with cache
staging: vt6656: int.c, int.h: Change return of function to void
staging: usbip: removed unused definitions from header
staging: usbip: removed dead code from receive function
staging:iio: Drop {mark,unmark}_in_use callbacks
staging:iio: Drop buffer mark_param_change callback
staging:iio: Drop the unused buffer enable() and is_enabled() callbacks
staging:iio: Drop buffer busy flag
staging:iio: Make sure a device is only opened once at a time
staging:iio: Disallow modifying buffer size when buffer is enabled
staging:iio: Disallow changing scan elements in all buffered modes
staging:iio: Use iio_buffer_enabled instead of open coding it
...
Fix up conflict in drivers/staging/iio/adc/ad799x_core.c (removal of
module_init due to using module_i2c_driver() helper, next to removal of
MODULE_ALIAS due to using MODULE_DEVICE_TABLE instead).
Diffstat (limited to 'drivers/staging/iio/adc/ad7192.c')
-rw-r--r-- | drivers/staging/iio/adc/ad7192.c | 80 |
1 files changed, 34 insertions, 46 deletions
diff --git a/drivers/staging/iio/adc/ad7192.c b/drivers/staging/iio/adc/ad7192.c index 797e65cd03e8..45f4504ed927 100644 --- a/drivers/staging/iio/adc/ad7192.c +++ b/drivers/staging/iio/adc/ad7192.c @@ -19,7 +19,7 @@ #include "../iio.h" #include "../sysfs.h" -#include "../buffer_generic.h" +#include "../buffer.h" #include "../ring_sw.h" #include "../trigger.h" #include "../trigger_consumer.h" @@ -453,25 +453,6 @@ out: return ret; } -static int ad7192_scan_from_ring(struct ad7192_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 ad7192_ring_preenable(struct iio_dev *indio_dev) { struct ad7192_state *st = iio_priv(indio_dev); @@ -479,12 +460,14 @@ static int ad7192_ring_preenable(struct iio_dev *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, indio_dev->masklength); + channel = find_first_bit(indio_dev->active_scan_mask, + indio_dev->masklength); - d_size = ring->scan_count * + d_size = bitmap_weight(indio_dev->active_scan_mask, + indio_dev->masklength) * indio_dev->channels[0].scan_type.storagebits / 8; if (ring->scan_timestamp) { @@ -544,7 +527,7 @@ static irqreturn_t ad7192_trigger_handler(int irq, void *p) s64 dat64[2]; s32 *dat32 = (s32 *)dat64; - if (ring->scan_count) + if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength)) __ad7192_read_reg(st, 1, 1, AD7192_REG_DATA, dat32, indio_dev->channels[0].scan_type.realbits/8); @@ -592,7 +575,7 @@ static int ad7192_register_ring_funcs_and_init(struct iio_dev *indio_dev) } /* Ring buffer functions - here trigger setup related */ - indio_dev->buffer->setup_ops = &ad7192_ring_setup_ops; + indio_dev->setup_ops = &ad7192_ring_setup_ops; /* Flag that polled ring buffering is possible */ indio_dev->modes |= INDIO_BUFFER_TRIGGERED; @@ -626,6 +609,10 @@ static irqreturn_t ad7192_data_rdy_trig_poll(int irq, void *private) return IRQ_HANDLED; } +static struct iio_trigger_ops ad7192_trigger_ops = { + .owner = THIS_MODULE, +}; + static int ad7192_probe_trigger(struct iio_dev *indio_dev) { struct ad7192_state *st = iio_priv(indio_dev); @@ -638,7 +625,7 @@ static int ad7192_probe_trigger(struct iio_dev *indio_dev) ret = -ENOMEM; goto error_ret; } - + st->trig->ops = &ad7192_trigger_ops; ret = request_irq(st->spi->irq, ad7192_data_rdy_trig_poll, IRQF_TRIGGER_LOW, @@ -650,7 +637,6 @@ static int ad7192_probe_trigger(struct iio_dev *indio_dev) 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); @@ -795,7 +781,7 @@ static ssize_t ad7192_set(struct device *dev, return -EBUSY; } - switch (this_attr->address) { + switch ((u32) this_attr->address) { case AD7192_REG_GPOCON: if (val) st->gpocon |= AD7192_GPOCON_BPDSW; @@ -873,8 +859,7 @@ static int ad7192_read_raw(struct iio_dev *indio_dev, case 0: mutex_lock(&indio_dev->mlock); if (iio_buffer_enabled(indio_dev)) - ret = ad7192_scan_from_ring(st, - chan->scan_index, &smpl); + ret = -EBUSY; else ret = ad7192_read(st, chan->address, chan->scan_type.realbits / 8, &smpl); @@ -901,18 +886,20 @@ static int ad7192_read_raw(struct iio_dev *indio_dev, } return IIO_VAL_INT; - case (1 << IIO_CHAN_INFO_SCALE_SHARED): - mutex_lock(&indio_dev->mlock); - *val = st->scale_avail[AD7192_CONF_GAIN(st->conf)][0]; - *val2 = st->scale_avail[AD7192_CONF_GAIN(st->conf)][1]; - mutex_unlock(&indio_dev->mlock); - - return IIO_VAL_INT_PLUS_NANO; - - case (1 << IIO_CHAN_INFO_SCALE_SEPARATE): - *val = 1000; - - return IIO_VAL_INT; + case IIO_CHAN_INFO_SCALE: + switch (chan->type) { + case IIO_VOLTAGE: + mutex_lock(&indio_dev->mlock); + *val = st->scale_avail[AD7192_CONF_GAIN(st->conf)][0]; + *val2 = st->scale_avail[AD7192_CONF_GAIN(st->conf)][1]; + mutex_unlock(&indio_dev->mlock); + return IIO_VAL_INT_PLUS_NANO; + case IIO_TEMP: + *val = 1000; + return IIO_VAL_INT; + default: + return -EINVAL; + } } return -EINVAL; @@ -935,7 +922,7 @@ static int ad7192_write_raw(struct iio_dev *indio_dev, } 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]) { @@ -992,7 +979,7 @@ static const struct iio_info ad7192_info = { .extend_name = _name, \ .channel = _chan, \ .channel2 = _chan2, \ - .info_mask = (1 << IIO_CHAN_INFO_SCALE_SHARED), \ + .info_mask = IIO_CHAN_INFO_SCALE_SHARED_BIT, \ .address = _address, \ .scan_index = _si, \ .scan_type = IIO_ST('s', 24, 32, 0)} @@ -1001,7 +988,7 @@ static const struct iio_info ad7192_info = { { .type = IIO_VOLTAGE, \ .indexed = 1, \ .channel = _chan, \ - .info_mask = (1 << IIO_CHAN_INFO_SCALE_SHARED), \ + .info_mask = IIO_CHAN_INFO_SCALE_SHARED_BIT, \ .address = _address, \ .scan_index = _si, \ .scan_type = IIO_ST('s', 24, 32, 0)} @@ -1010,7 +997,7 @@ static const struct iio_info ad7192_info = { { .type = IIO_TEMP, \ .indexed = 1, \ .channel = _chan, \ - .info_mask = (1 << IIO_CHAN_INFO_SCALE_SEPARATE), \ + .info_mask = IIO_CHAN_INFO_SCALE_SEPARATE_BIT, \ .address = _address, \ .scan_index = _si, \ .scan_type = IIO_ST('s', 24, 32, 0)} @@ -1151,6 +1138,7 @@ static const struct spi_device_id ad7192_id[] = { {"ad7195", ID_AD7195}, {} }; +MODULE_DEVICE_TABLE(spi, ad7192_id); static struct spi_driver ad7192_driver = { .driver = { |