int ad799x_register_ring_funcs_and_init(struct iio_dev *indio_dev)
{
struct ad799x_state *st = indio_dev->dev_data;
int ret = 0;
indio_dev->ring = iio_sw_rb_allocate(indio_dev);
if (!indio_dev->ring) {
ret = -ENOMEM;
goto error_ret;
}
/* Effectively select the ring buffer implementation */
iio_ring_sw_register_funcs(&st->indio_dev->ring->access);
ret = iio_alloc_pollfunc(indio_dev, NULL, &ad799x_poll_func_th);
if (ret)
goto error_deallocate_sw_rb;
/* Ring buffer functions - here trigger setup related */
indio_dev->ring->preenable = &ad799x_ring_preenable;
indio_dev->ring->postenable = &iio_triggered_ring_postenable;
indio_dev->ring->predisable = &iio_triggered_ring_predisable;
indio_dev->ring->scan_timestamp = true;
INIT_WORK(&st->poll_work, &ad799x_poll_bh_to_ring);
indio_dev->ring->scan_el_attrs = st->chip_info->scan_attrs;
/* Flag that polled ring buffering is possible */
indio_dev->modes |= INDIO_RING_TRIGGERED;
return 0;
error_deallocate_sw_rb:
iio_sw_rb_free(indio_dev->ring);
error_ret:
return ret;
}
int ad799x_register_ring_funcs_and_init(struct iio_dev *indio_dev)
{
int ret = 0;
indio_dev->buffer = iio_kfifo_allocate(indio_dev);
if (!indio_dev->buffer) {
ret = -ENOMEM;
goto error_ret;
}
indio_dev->pollfunc = iio_alloc_pollfunc(NULL,
&ad799x_trigger_handler,
IRQF_ONESHOT,
indio_dev,
"%s_consumer%d",
indio_dev->name,
indio_dev->id);
if (indio_dev->pollfunc == NULL) {
ret = -ENOMEM;
goto error_deallocate_kfifo;
}
/* Ring buffer functions - here trigger setup related */
indio_dev->setup_ops = &ad799x_buf_setup_ops;
indio_dev->buffer->scan_timestamp = true;
/* Flag that polled ring buffering is possible */
indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
return 0;
error_deallocate_kfifo:
iio_kfifo_free(indio_dev->buffer);
error_ret:
return ret;
}
int adis16201_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;
/* Effectively select the ring buffer implementation */
ring->bpe = 2;
ring->scan_timestamp = true;
ring->access = &ring_sw_access_funcs;
ring->setup_ops = &adis16201_ring_setup_ops;
ring->owner = THIS_MODULE;
indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
&adis16201_trigger_handler,
IRQF_ONESHOT,
indio_dev,
"adis16201_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;
}
int adis16209_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 = &adis16209_ring_setup_ops;
indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
&adis16209_trigger_handler,
IRQF_ONESHOT,
indio_dev,
"%s_consumer%d",
indio_dev->name,
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;
}
static int yas_probe_trigger(struct iio_dev *indio_dev)
{
int ret;
struct yas_state *st = iio_priv(indio_dev);
indio_dev->pollfunc = iio_alloc_pollfunc(&yas_iio_pollfunc_store_boottime,
&yas_trigger_handler, IRQF_ONESHOT, indio_dev,
"%s_consumer%d", indio_dev->name, indio_dev->id);
if (indio_dev->pollfunc == NULL) {
ret = -ENOMEM;
goto error_ret;
}
st->trig = iio_trigger_alloc("%s-dev%d",
indio_dev->name,
indio_dev->id);
if (!st->trig) {
ret = -ENOMEM;
goto error_dealloc_pollfunc;
}
st->trig->dev.parent = &st->client->dev;
st->trig->ops = &yas_trigger_ops;
iio_trigger_set_drvdata(st->trig, indio_dev);
ret = iio_trigger_register(st->trig);
if (ret)
goto error_free_trig;
return 0;
error_free_trig:
iio_trigger_free(st->trig);
error_dealloc_pollfunc:
iio_dealloc_pollfunc(indio_dev->pollfunc);
error_ret:
return ret;
}
static int yas_probe_trigger(struct iio_dev *indio_dev)
{
int ret;
struct yas_state *st = iio_priv(indio_dev);
indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
&yas_trigger_handler, IRQF_ONESHOT, indio_dev,
"%s_consumer%d", indio_dev->name, indio_dev->id);
if (indio_dev->pollfunc == NULL) {
ret = -ENOMEM;
goto error_ret;
}
st->trig = iio_allocate_trigger("%s-dev%d",
indio_dev->name,
indio_dev->id);
printk("YAMAHA allocate_trigger[%s-dev%d]\n", indio_dev->name, indio_dev->id);
if (!st->trig) {
ret = -ENOMEM;
goto error_dealloc_pollfunc;
}
st->trig->dev.parent = &st->client->dev;
st->trig->ops = &yas_trigger_ops;
st->trig->private_data = indio_dev;
ret = iio_trigger_register(st->trig);
printk("YAMAHA iio_trigger_register[%s] [%d]\n", st->trig->name, ret);
if (ret)
goto error_free_trig;
return 0;
error_free_trig:
iio_free_trigger(st->trig);
error_dealloc_pollfunc:
iio_dealloc_pollfunc(indio_dev->pollfunc);
error_ret:
return ret;
}
int ad7887_register_ring_funcs_and_init(struct iio_dev *indio_dev)
{
int ret;
indio_dev->ring = iio_sw_rb_allocate(indio_dev);
if (!indio_dev->ring) {
ret = -ENOMEM;
goto error_ret;
}
/* Effectively select the ring buffer implementation */
indio_dev->ring->access = &ring_sw_access_funcs;
indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
&ad7887_trigger_handler,
IRQF_ONESHOT,
indio_dev,
"ad7887_consumer%d",
indio_dev->id);
if (indio_dev->pollfunc == NULL) {
ret = -ENOMEM;
goto error_deallocate_sw_rb;
}
/* Ring buffer functions - here trigger setup related */
indio_dev->ring->setup_ops = &ad7887_ring_setup_ops;
/* Flag that polled ring buffering is possible */
indio_dev->modes |= INDIO_RING_TRIGGERED;
return 0;
error_deallocate_sw_rb:
iio_sw_rb_free(indio_dev->ring);
error_ret:
return ret;
}
static int optical_allocate_ring(struct iio_dev *indio_dev) //VungGV?
{
/*int ret;
printk (KERN_ALERT "[%s]\n", __FUNCTION__);
ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
&optical_trigger_handler, &optical_buffer_setup_ops);
return ret;*/
int ret = 0;
struct iio_ring_buffer *ring;
ring = iio_sw_rb_allocate(indio_dev);
if (!ring) {
ret = -ENOMEM;
return ret;
}
indio_dev->ring = ring;
/* Effectively select the ring buffer implementation */
ring->access = &ring_sw_access_funcs;
ring->bpe = 2;
ring->scan_timestamp = true;
ring->setup_ops = &optical_buffer_setup_ops;
ring->owner = THIS_MODULE;
/* Set default scan mode */
iio_scan_mask_set(ring, L1PH03_SCAN_PROX_X);
iio_scan_mask_set(ring, L1PH03_SCAN_LIGHT_X);
//iio_scan_mask_set(ring, ADIS16260_SCAN_AUX_ADC);
//iio_scan_mask_set(ring, ADIS16260_SCAN_TEMP);
//iio_scan_mask_set(ring, ADIS16260_SCAN_ANGL);
indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
&optical_trigger_handler,
IRQF_ONESHOT,
indio_dev,
"lt1ph03_consumer%d",
indio_dev->id);
if (indio_dev->pollfunc == NULL) {
ret = -ENOMEM;
goto error_iio_sw_rb_free;
}
indio_dev->modes |= INDIO_RING_TRIGGERED;
return 0;
error_iio_sw_rb_free:
iio_sw_rb_free(indio_dev->ring);
return ret;
}
/**
* iio_triggered_buffer_setup() - Setup triggered buffer and pollfunc
* @indio_dev: IIO device structure
* @pollfunc_bh: Function which will be used as pollfunc bottom half
* @pollfunc_th: Function which will be used as pollfunc top half
* @setup_ops: Buffer setup functions to use for this device.
* If NULL the default setup functions for triggered
* buffers will be used.
*
* This function combines some common tasks which will normally be performed
* when setting up a triggered buffer. It will allocate the buffer and the
* pollfunc, as well as register the buffer with the IIO core.
*
* Before calling this function the indio_dev structure should already be
* completely initialized, but not yet registered. In practice this means that
* this function should be called right before iio_device_register().
*
* To free the resources allocated by this function call
* iio_triggered_buffer_cleanup().
*/
int iio_triggered_buffer_setup(struct iio_dev *indio_dev,
irqreturn_t (*pollfunc_bh)(int irq, void *p),
irqreturn_t (*pollfunc_th)(int irq, void *p),
const struct iio_buffer_setup_ops *setup_ops)
{
int ret;
indio_dev->buffer = iio_kfifo_allocate(indio_dev);
if (!indio_dev->buffer) {
ret = -ENOMEM;
goto error_ret;
}
indio_dev->pollfunc = iio_alloc_pollfunc(pollfunc_bh,
pollfunc_th,
IRQF_ONESHOT,
indio_dev,
"%s_consumer%d",
indio_dev->name,
indio_dev->id);
if (indio_dev->pollfunc == NULL) {
ret = -ENOMEM;
goto error_kfifo_free;
}
/* Ring buffer functions - here trigger setup related */
if (setup_ops)
indio_dev->setup_ops = setup_ops;
else
indio_dev->setup_ops = &iio_triggered_buffer_setup_ops;
/* Flag that polled ring buffering is possible */
indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
ret = iio_buffer_register(indio_dev,
indio_dev->channels,
indio_dev->num_channels);
if (ret)
goto error_dealloc_pollfunc;
return 0;
error_dealloc_pollfunc:
iio_dealloc_pollfunc(indio_dev->pollfunc);
error_kfifo_free:
iio_kfifo_free(indio_dev->buffer);
error_ret:
return ret;
}
int adis16209_configure_ring(struct iio_dev *indio_dev)
{
int ret = 0;
struct iio_ring_buffer *ring;
ring = iio_sw_rb_allocate(indio_dev);
if (!ring) {
ret = -ENOMEM;
return ret;
}
indio_dev->ring = ring;
/* Effectively select the ring buffer implementation */
ring->access = &ring_sw_access_funcs;
ring->bpe = 2;
ring->scan_timestamp = true;
ring->setup_ops = &adis16209_ring_setup_ops;
ring->owner = THIS_MODULE;
/* Set default scan mode */
iio_scan_mask_set(ring, ADIS16209_SCAN_SUPPLY);
iio_scan_mask_set(ring, ADIS16209_SCAN_ACC_X);
iio_scan_mask_set(ring, ADIS16209_SCAN_ACC_Y);
iio_scan_mask_set(ring, ADIS16209_SCAN_AUX_ADC);
iio_scan_mask_set(ring, ADIS16209_SCAN_TEMP);
iio_scan_mask_set(ring, ADIS16209_SCAN_INCLI_X);
iio_scan_mask_set(ring, ADIS16209_SCAN_INCLI_Y);
iio_scan_mask_set(ring, ADIS16209_SCAN_ROT);
indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
&adis16209_trigger_handler,
IRQF_ONESHOT,
indio_dev,
"%s_consumer%d",
indio_dev->name,
indio_dev->id);
if (indio_dev->pollfunc == NULL) {
ret = -ENOMEM;
goto error_iio_sw_rb_free;
}
indio_dev->modes |= INDIO_RING_TRIGGERED;
return 0;
error_iio_sw_rb_free:
iio_sw_rb_free(indio_dev->ring);
return ret;
}
int adis16209_configure_ring(struct iio_dev *indio_dev)
{
int ret = 0;
struct adis16209_state *st = indio_dev->dev_data;
struct iio_ring_buffer *ring;
INIT_WORK(&st->work_trigger_to_ring, adis16209_trigger_bh_to_ring);
/* Set default scan mode */
iio_scan_mask_set(indio_dev, iio_scan_el_supply.number);
iio_scan_mask_set(indio_dev, iio_scan_el_rot.number);
iio_scan_mask_set(indio_dev, iio_scan_el_accel_x.number);
iio_scan_mask_set(indio_dev, iio_scan_el_accel_y.number);
iio_scan_mask_set(indio_dev, iio_scan_el_temp.number);
iio_scan_mask_set(indio_dev, iio_scan_el_aux_adc.number);
iio_scan_mask_set(indio_dev, iio_scan_el_incli_x.number);
iio_scan_mask_set(indio_dev, iio_scan_el_incli_y.number);
indio_dev->scan_timestamp = true;
indio_dev->scan_el_attrs = &adis16209_scan_el_group;
ring = iio_sw_rb_allocate(indio_dev);
if (!ring) {
ret = -ENOMEM;
return ret;
}
indio_dev->ring = ring;
/* Effectively select the ring buffer implementation */
iio_ring_sw_register_funcs(&ring->access);
ring->bpe = 2;
ring->preenable = &iio_sw_ring_preenable;
ring->postenable = &iio_triggered_ring_postenable;
ring->predisable = &iio_triggered_ring_predisable;
ring->owner = THIS_MODULE;
ret = iio_alloc_pollfunc(indio_dev, NULL, &adis16209_poll_func_th);
if (ret)
goto error_iio_sw_rb_free;
indio_dev->modes |= INDIO_RING_TRIGGERED;
return 0;
error_iio_sw_rb_free:
iio_sw_rb_free(indio_dev->ring);
return ret;
}
int ad7606_register_ring_funcs_and_init(struct iio_dev *indio_dev)
{
struct ad7606_state *st = iio_priv(indio_dev);
int ret;
indio_dev->buffer = iio_sw_rb_allocate(indio_dev);
if (!indio_dev->buffer) {
ret = -ENOMEM;
goto error_ret;
}
/* Effectively select the ring buffer implementation */
indio_dev->buffer->access = &ring_sw_access_funcs;
indio_dev->buffer->bpe =
st->chip_info->channels[0].scan_type.storagebits / 8;
indio_dev->pollfunc = iio_alloc_pollfunc(&ad7606_trigger_handler_th_bh,
&ad7606_trigger_handler_th_bh,
0,
indio_dev,
"%s_consumer%d",
indio_dev->name,
indio_dev->id);
if (indio_dev->pollfunc == NULL) {
ret = -ENOMEM;
goto error_deallocate_sw_rb;
}
/* Ring buffer functions - here trigger setup related */
indio_dev->buffer->setup_ops = &ad7606_ring_setup_ops;
indio_dev->buffer->scan_timestamp = true ;
INIT_WORK(&st->poll_work, &ad7606_poll_bh_to_ring);
/* Flag that polled ring buffering is possible */
indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
return 0;
error_deallocate_sw_rb:
iio_sw_rb_free(indio_dev->buffer);
error_ret:
return ret;
}
/**
* iio_triggered_buffer_setup() - Setup triggered buffer and pollfunc
* @indio_dev: IIO device structure
* @pollfunc_bh: Function which will be used as pollfunc bottom half
* @pollfunc_th: Function which will be used as pollfunc top half
* @setup_ops: Buffer setup functions to use for this device.
* If NULL the default setup functions for triggered
* buffers will be used.
*
* This function combines some common tasks which will normally be performed
* when setting up a triggered buffer. It will allocate the buffer and the
* pollfunc.
*
* Before calling this function the indio_dev structure should already be
* completely initialized, but not yet registered. In practice this means that
* this function should be called right before iio_device_register().
*
* To free the resources allocated by this function call
* iio_triggered_buffer_cleanup().
*/
int iio_triggered_buffer_setup(struct iio_dev *indio_dev,
irqreturn_t (*pollfunc_bh)(int irq, void *p),
irqreturn_t (*pollfunc_th)(int irq, void *p),
const struct iio_buffer_setup_ops *setup_ops)
{
struct iio_buffer *buffer;
int ret;
buffer = iio_kfifo_allocate();
if (!buffer) {
ret = -ENOMEM;
goto error_ret;
}
iio_device_attach_buffer(indio_dev, buffer);
indio_dev->pollfunc = iio_alloc_pollfunc(pollfunc_bh,
pollfunc_th,
IRQF_ONESHOT,
indio_dev,
"%s_consumer%d",
indio_dev->name,
indio_dev->id);
if (indio_dev->pollfunc == NULL) {
ret = -ENOMEM;
goto error_kfifo_free;
}
/* Ring buffer functions - here trigger setup related */
indio_dev->setup_ops = setup_ops;
/* Flag that polled ring buffering is possible */
indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
return 0;
error_kfifo_free:
iio_kfifo_free(indio_dev->buffer);
error_ret:
return ret;
}
int iio_simple_dummy_configure_buffer(struct iio_dev *indio_dev)
{
int ret;
struct iio_buffer *buffer;
buffer = iio_kfifo_allocate(indio_dev);
if (buffer == NULL) {
ret = -ENOMEM;
goto error_ret;
}
indio_dev->buffer = buffer;
buffer->scan_timestamp = true;
indio_dev->setup_ops = &iio_simple_dummy_buffer_setup_ops;
indio_dev->pollfunc = iio_alloc_pollfunc(NULL,
&iio_simple_dummy_trigger_h,
IRQF_ONESHOT,
indio_dev,
"iio_simple_dummy_consumer%d",
indio_dev->id);
if (indio_dev->pollfunc == NULL) {
ret = -ENOMEM;
goto error_free_buffer;
}
indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
return 0;
error_free_buffer:
iio_kfifo_free(indio_dev->buffer);
error_ret:
return ret;
}
int ad7606_register_ring_funcs_and_init(struct iio_dev *indio_dev)
{
struct ad7606_state *st = iio_priv(indio_dev);
int ret;
indio_dev->buffer = iio_kfifo_allocate(indio_dev);
if (!indio_dev->buffer) {
ret = -ENOMEM;
goto error_ret;
}
indio_dev->pollfunc = iio_alloc_pollfunc(&ad7606_trigger_handler_th_bh,
&ad7606_trigger_handler_th_bh,
0,
indio_dev,
"%s_consumer%d",
indio_dev->name,
indio_dev->id);
if (indio_dev->pollfunc == NULL) {
ret = -ENOMEM;
goto error_deallocate_kfifo;
}
/* Ring buffer functions - here trigger setup related */
indio_dev->setup_ops = &ad7606_ring_setup_ops;
indio_dev->buffer->scan_timestamp = true;
INIT_WORK(&st->poll_work, &ad7606_poll_bh_to_ring);
/* Flag that polled ring buffering is possible */
indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
return 0;
error_deallocate_kfifo:
iio_kfifo_free(indio_dev->buffer);
error_ret:
return ret;
}
int lis3l02dq_configure_ring(struct iio_dev *indio_dev)
{
int ret;
struct iio_sw_ring_helper_state *h = iio_dev_get_devdata(indio_dev);
struct iio_ring_buffer *ring;
INIT_WORK(&h->work_trigger_to_ring, lis3l02dq_trigger_bh_to_ring);
h->get_ring_element = &lis3l02dq_get_ring_element;
ring = lis3l02dq_alloc_buf(indio_dev);
if (!ring)
return -ENOMEM;
indio_dev->ring = ring;
/* Effectively select the ring buffer implementation */
lis3l02dq_register_buf_funcs(&ring->access);
ring->bpe = 2;
ring->scan_el_attrs = &lis3l02dq_scan_el_group;
ring->scan_timestamp = true;
ring->preenable = &iio_sw_ring_preenable;
ring->postenable = &iio_triggered_ring_postenable;
ring->predisable = &iio_triggered_ring_predisable;
ring->owner = THIS_MODULE;
/* Set default scan mode */
iio_scan_mask_set(ring, iio_scan_el_accel_x.number);
iio_scan_mask_set(ring, iio_scan_el_accel_y.number);
iio_scan_mask_set(ring, iio_scan_el_accel_z.number);
ret = iio_alloc_pollfunc(indio_dev, NULL, &lis3l02dq_poll_func_th);
if (ret)
goto error_iio_sw_rb_free;
indio_dev->modes |= INDIO_RING_TRIGGERED;
return 0;
error_iio_sw_rb_free:
lis3l02dq_free_buf(indio_dev->ring);
return ret;
}
int ad7476_register_ring_funcs_and_init(struct iio_dev *indio_dev)
{
struct ad7476_state *st = iio_priv(indio_dev);
int ret = 0;
indio_dev->ring = iio_sw_rb_allocate(indio_dev);
if (!indio_dev->ring) {
ret = -ENOMEM;
goto error_ret;
}
/* Effectively select the ring buffer implementation */
indio_dev->ring->access = &ring_sw_access_funcs;
indio_dev->pollfunc
= iio_alloc_pollfunc(NULL,
&ad7476_trigger_handler,
IRQF_ONESHOT,
indio_dev,
"%s_consumer%d",
spi_get_device_id(st->spi)->name,
indio_dev->id);
if (indio_dev->pollfunc == NULL) {
ret = -ENOMEM;
goto error_deallocate_sw_rb;
}
/* Ring buffer functions - here trigger setup related */
indio_dev->ring->setup_ops = &ad7476_ring_setup_ops;
indio_dev->ring->scan_timestamp = true;
/* Flag that polled ring buffering is possible */
indio_dev->modes |= INDIO_RING_TRIGGERED;
return 0;
error_deallocate_sw_rb:
iio_sw_rb_free(indio_dev->ring);
error_ret:
return ret;
}
int max1363_register_ring_funcs_and_init(struct iio_dev *indio_dev)
{
struct max1363_state *st = iio_priv(indio_dev);
int ret = 0;
indio_dev->buffer = iio_sw_rb_allocate(indio_dev);
if (!indio_dev->buffer) {
ret = -ENOMEM;
goto error_ret;
}
indio_dev->pollfunc = iio_alloc_pollfunc(NULL,
&max1363_trigger_handler,
IRQF_ONESHOT,
indio_dev,
"%s_consumer%d",
st->client->name,
indio_dev->id);
if (indio_dev->pollfunc == NULL) {
ret = -ENOMEM;
goto error_deallocate_sw_rb;
}
/* Effectively select the ring buffer implementation */
indio_dev->buffer->access = &ring_sw_access_funcs;
/* Ring buffer functions - here trigger setup related */
indio_dev->setup_ops = &max1363_ring_setup_ops;
/* Flag that polled ring buffering is possible */
indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
return 0;
error_deallocate_sw_rb:
iio_sw_rb_free(indio_dev->buffer);
error_ret:
return ret;
}
int ade7758_configure_ring(struct iio_dev *indio_dev)
{
struct ade7758_state *st = iio_priv(indio_dev);
int ret = 0;
indio_dev->buffer = iio_kfifo_allocate(indio_dev);
if (!indio_dev->buffer) {
ret = -ENOMEM;
return ret;
}
indio_dev->setup_ops = &ade7758_ring_setup_ops;
indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
&ade7758_trigger_handler,
0,
indio_dev,
"ade7759_consumer%d",
indio_dev->id);
if (indio_dev->pollfunc == NULL) {
ret = -ENOMEM;
goto error_iio_kfifo_free;
}
indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
st->tx_buf[0] = ADE7758_READ_REG(ADE7758_RSTATUS);
st->tx_buf[1] = 0;
st->tx_buf[2] = 0;
st->tx_buf[3] = 0;
st->tx_buf[4] = ADE7758_READ_REG(ADE7758_WFORM);
st->tx_buf[5] = 0;
st->tx_buf[6] = 0;
st->tx_buf[7] = 0;
/* build spi ring message */
st->ring_xfer[0].tx_buf = &st->tx_buf[0];
st->ring_xfer[0].len = 1;
st->ring_xfer[0].bits_per_word = 8;
st->ring_xfer[0].delay_usecs = 4;
st->ring_xfer[1].rx_buf = &st->rx_buf[1];
st->ring_xfer[1].len = 3;
st->ring_xfer[1].bits_per_word = 8;
st->ring_xfer[1].cs_change = 1;
st->ring_xfer[2].tx_buf = &st->tx_buf[4];
st->ring_xfer[2].len = 1;
st->ring_xfer[2].bits_per_word = 8;
st->ring_xfer[2].delay_usecs = 1;
st->ring_xfer[3].rx_buf = &st->rx_buf[5];
st->ring_xfer[3].len = 3;
st->ring_xfer[3].bits_per_word = 8;
spi_message_init(&st->ring_msg);
spi_message_add_tail(&st->ring_xfer[0], &st->ring_msg);
spi_message_add_tail(&st->ring_xfer[1], &st->ring_msg);
spi_message_add_tail(&st->ring_xfer[2], &st->ring_msg);
spi_message_add_tail(&st->ring_xfer[3], &st->ring_msg);
return 0;
error_iio_kfifo_free:
iio_kfifo_free(indio_dev->buffer);
return ret;
}
int iio_simple_dummy_configure_buffer(struct iio_dev *indio_dev)
{
int ret;
struct iio_buffer *buffer;
/* Allocate a buffer to use - here a kfifo */
buffer = iio_kfifo_allocate(indio_dev);
if (buffer == NULL) {
ret = -ENOMEM;
goto error_ret;
}
indio_dev->buffer = buffer;
/* Enable timestamps by default */
buffer->scan_timestamp = true;
/*
* Tell the core what device type specific functions should
* be run on either side of buffer capture enable / disable.
*/
indio_dev->setup_ops = &iio_simple_dummy_buffer_setup_ops;
/*
* Configure a polling function.
* When a trigger event with this polling function connected
* occurs, this function is run. Typically this grabs data
* from the device.
*
* NULL for the top half. This is normally implemented only if we
* either want to ping a capture now pin (no sleeping) or grab
* a timestamp as close as possible to a data ready trigger firing.
*
* IRQF_ONESHOT ensures irqs are masked such that only one instance
* of the handler can run at a time.
*
* "iio_simple_dummy_consumer%d" formatting string for the irq 'name'
* as seen under /proc/interrupts. Remaining parameters as per printk.
*/
indio_dev->pollfunc = iio_alloc_pollfunc(NULL,
&iio_simple_dummy_trigger_h,
IRQF_ONESHOT,
indio_dev,
"iio_simple_dummy_consumer%d",
indio_dev->id);
if (indio_dev->pollfunc == NULL) {
ret = -ENOMEM;
goto error_free_buffer;
}
/*
* Notify the core that this device is capable of buffered capture
* driven by a trigger.
*/
indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
return 0;
error_free_buffer:
iio_kfifo_free(indio_dev->buffer);
error_ret:
return ret;
}
