diff options
author | Anton Vorontsov <anton.vorontsov@linaro.org> | 2012-12-12 10:15:57 +0400 |
---|---|---|
committer | Anton Vorontsov <anton.vorontsov@linaro.org> | 2012-12-12 10:15:57 +0400 |
commit | 76d8a23b127020472207b281427d3e9f4f1227e4 (patch) | |
tree | e14d7063d96d850fb259115d6fb08cbeb98ccf88 /drivers/staging/iio/accel/adis16203_ring.c | |
parent | eba3b670a9166a91be5a11fe33290dca6b9457a2 (diff) | |
parent | 1ebaf4f4e6912199f8a4e30ba3ab55da2b71bcdf (diff) | |
download | linux-76d8a23b127020472207b281427d3e9f4f1227e4.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
The merge is merely to fix conflicts before sending a pull request.
Conflicts:
drivers/power/ab8500_btemp.c
drivers/power/ab8500_charger.c
drivers/power/ab8500_fg.c
drivers/power/abx500_chargalg.c
drivers/power/max8925_power.c
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Diffstat (limited to 'drivers/staging/iio/accel/adis16203_ring.c')
-rw-r--r-- | drivers/staging/iio/accel/adis16203_ring.c | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/drivers/staging/iio/accel/adis16203_ring.c b/drivers/staging/iio/accel/adis16203_ring.c deleted file mode 100644 index 7507e1a04591..000000000000 --- a/drivers/staging/iio/accel/adis16203_ring.c +++ /dev/null @@ -1,136 +0,0 @@ -#include <linux/export.h> -#include <linux/interrupt.h> -#include <linux/mutex.h> -#include <linux/kernel.h> -#include <linux/spi/spi.h> -#include <linux/slab.h> - -#include <linux/iio/iio.h> -#include "../ring_sw.h" -#include <linux/iio/trigger_consumer.h> -#include "adis16203.h" - -/** - * adis16203_read_ring_data() read data registers which will be placed into ring - * @indio_dev: the IIO device - * @rx: somewhere to pass back the value read - **/ -static int adis16203_read_ring_data(struct iio_dev *indio_dev, u8 *rx) -{ - struct spi_message msg; - struct adis16203_state *st = iio_priv(indio_dev); - struct spi_transfer xfers[ADIS16203_OUTPUTS + 1]; - int ret; - int i; - - mutex_lock(&st->buf_lock); - - spi_message_init(&msg); - - memset(xfers, 0, sizeof(xfers)); - for (i = 0; i <= ADIS16203_OUTPUTS; i++) { - xfers[i].bits_per_word = 8; - xfers[i].cs_change = 1; - xfers[i].len = 2; - xfers[i].delay_usecs = 20; - xfers[i].tx_buf = st->tx + 2 * i; - if (i < 1) /* SUPPLY_OUT: 0x02, AUX_ADC: 0x08 */ - st->tx[2 * i] = ADIS16203_READ_REG(ADIS16203_SUPPLY_OUT + 2 * i); - else - st->tx[2 * i] = ADIS16203_READ_REG(ADIS16203_SUPPLY_OUT + 2 * i + 6); - st->tx[2 * i + 1] = 0; - if (i >= 1) - xfers[i].rx_buf = rx + 2 * (i - 1); - spi_message_add_tail(&xfers[i], &msg); - } - - ret = spi_sync(st->us, &msg); - if (ret) - dev_err(&st->us->dev, "problem when burst reading"); - - mutex_unlock(&st->buf_lock); - - return ret; -} - -/* Whilst this makes a lot of calls to iio_sw_ring functions - it is to device - * specific to be rolled into the core. - */ -static irqreturn_t adis16203_trigger_handler(int irq, void *p) -{ - struct iio_poll_func *pf = p; - struct iio_dev *indio_dev = pf->indio_dev; - struct adis16203_state *st = iio_priv(indio_dev); - - int i = 0; - s16 *data; - - data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL); - if (data == NULL) { - dev_err(&st->us->dev, "memory alloc failed in ring bh"); - goto done; - } - - if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength) && - adis16203_read_ring_data(indio_dev, st->rx) >= 0) - for (; i < bitmap_weight(indio_dev->active_scan_mask, - indio_dev->masklength); i++) - data[i] = be16_to_cpup((__be16 *)&(st->rx[i*2])); - - /* Guaranteed to be aligned with 8 byte boundary */ - if (indio_dev->scan_timestamp) - *((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp; - - iio_push_to_buffer(indio_dev->buffer, (u8 *)data); - - kfree(data); -done: - iio_trigger_notify_done(indio_dev->trig); - - return IRQ_HANDLED; -} - -void adis16203_unconfigure_ring(struct iio_dev *indio_dev) -{ - iio_dealloc_pollfunc(indio_dev->pollfunc); - iio_sw_rb_free(indio_dev->buffer); -} - -static const struct iio_buffer_setup_ops adis16203_ring_setup_ops = { - .preenable = &iio_sw_buffer_preenable, - .postenable = &iio_triggered_buffer_postenable, - .predisable = &iio_triggered_buffer_predisable, -}; - -int adis16203_configure_ring(struct iio_dev *indio_dev) -{ - int ret = 0; - struct iio_buffer *ring; - - ring = iio_sw_rb_allocate(indio_dev); - if (!ring) { - ret = -ENOMEM; - return ret; - } - indio_dev->buffer = ring; - ring->scan_timestamp = true; - indio_dev->setup_ops = &adis16203_ring_setup_ops; - - indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time, - &adis16203_trigger_handler, - IRQF_ONESHOT, - indio_dev, - "adis16203_consumer%d", - indio_dev->id); - if (indio_dev->pollfunc == NULL) { - ret = -ENOMEM; - goto error_iio_sw_rb_free; - } - - indio_dev->modes |= INDIO_BUFFER_TRIGGERED; - return 0; - -error_iio_sw_rb_free: - iio_sw_rb_free(indio_dev->buffer); - return ret; -} |