diff options
Diffstat (limited to 'drivers/staging/iio/industrialio-ring.c')
| -rw-r--r-- | drivers/staging/iio/industrialio-ring.c | 99 |
1 files changed, 61 insertions, 38 deletions
diff --git a/drivers/staging/iio/industrialio-ring.c b/drivers/staging/iio/industrialio-ring.c index 853ebe9..050f9f9 100644 --- a/drivers/staging/iio/industrialio-ring.c +++ b/drivers/staging/iio/industrialio-ring.c @@ -36,8 +36,8 @@ static int iio_ring_open(struct inode *inode, struct file *filp) struct iio_ring_buffer *rb = hand->private; filp->private_data = hand->private; - if (rb->access.mark_in_use) - rb->access.mark_in_use(rb); + if (rb->access->mark_in_use) + rb->access->mark_in_use(rb); return 0; } @@ -55,8 +55,8 @@ static int iio_ring_release(struct inode *inode, struct file *filp) struct iio_ring_buffer *rb = hand->private; clear_bit(IIO_BUSY_BIT_POS, &rb->access_handler.flags); - if (rb->access.unmark_in_use) - rb->access.unmark_in_use(rb); + if (rb->access->unmark_in_use) + rb->access->unmark_in_use(rb); return 0; } @@ -74,9 +74,9 @@ static ssize_t iio_ring_read_first_n_outer(struct file *filp, char __user *buf, int ret; /* rip lots must exist. */ - if (!rb->access.read_first_n) + if (!rb->access->read_first_n) return -EINVAL; - ret = rb->access.read_first_n(rb, n, buf); + ret = rb->access->read_first_n(rb, n, buf); return ret; } @@ -165,8 +165,6 @@ static void __iio_free_ring_buffer_chrdev(struct iio_ring_buffer *buf) void iio_ring_buffer_init(struct iio_ring_buffer *ring, struct iio_dev *dev_info) { - if (ring->access.mark_param_change) - ring->access.mark_param_change(ring); ring->indio_dev = dev_info; ring->access_handler.private = ring; init_waitqueue_head(&ring->pollq); @@ -344,9 +342,9 @@ ssize_t iio_read_ring_length(struct device *dev, int len = 0; struct iio_ring_buffer *ring = dev_get_drvdata(dev); - if (ring->access.get_length) + if (ring->access->get_length) len = sprintf(buf, "%d\n", - ring->access.get_length(ring)); + ring->access->get_length(ring)); return len; } @@ -364,14 +362,14 @@ ssize_t iio_write_ring_length(struct device *dev, if (ret) return ret; - if (ring->access.get_length) - if (val == ring->access.get_length(ring)) + if (ring->access->get_length) + if (val == ring->access->get_length(ring)) return len; - if (ring->access.set_length) { - ring->access.set_length(ring, val); - if (ring->access.mark_param_change) - ring->access.mark_param_change(ring); + if (ring->access->set_length) { + ring->access->set_length(ring, val); + if (ring->access->mark_param_change) + ring->access->mark_param_change(ring); } return len; @@ -385,9 +383,9 @@ ssize_t iio_read_ring_bytes_per_datum(struct device *dev, int len = 0; struct iio_ring_buffer *ring = dev_get_drvdata(dev); - if (ring->access.get_bytes_per_datum) + if (ring->access->get_bytes_per_datum) len = sprintf(buf, "%d\n", - ring->access.get_bytes_per_datum(ring)); + ring->access->get_bytes_per_datum(ring)); return len; } @@ -413,8 +411,8 @@ ssize_t iio_store_ring_enable(struct device *dev, goto done; } if (requested_state) { - if (ring->preenable) { - ret = ring->preenable(dev_info); + if (ring->setup_ops->preenable) { + ret = ring->setup_ops->preenable(dev_info); if (ret) { printk(KERN_ERR "Buffer not started:" @@ -422,8 +420,8 @@ ssize_t iio_store_ring_enable(struct device *dev, goto error_ret; } } - if (ring->access.request_update) { - ret = ring->access.request_update(ring); + if (ring->access->request_update) { + ret = ring->access->request_update(ring); if (ret) { printk(KERN_INFO "Buffer not started:" @@ -431,16 +429,16 @@ ssize_t iio_store_ring_enable(struct device *dev, goto error_ret; } } - if (ring->access.mark_in_use) - ring->access.mark_in_use(ring); + if (ring->access->mark_in_use) + ring->access->mark_in_use(ring); /* Definitely possible for devices to support both of these.*/ if (dev_info->modes & INDIO_RING_TRIGGERED) { if (!dev_info->trig) { printk(KERN_INFO "Buffer not started: no trigger\n"); ret = -EINVAL; - if (ring->access.unmark_in_use) - ring->access.unmark_in_use(ring); + if (ring->access->unmark_in_use) + ring->access->unmark_in_use(ring); goto error_ret; } dev_info->currentmode = INDIO_RING_TRIGGERED; @@ -451,32 +449,32 @@ ssize_t iio_store_ring_enable(struct device *dev, goto error_ret; } - if (ring->postenable) { + if (ring->setup_ops->postenable) { - ret = ring->postenable(dev_info); + ret = ring->setup_ops->postenable(dev_info); if (ret) { printk(KERN_INFO "Buffer not started:" "postenable failed\n"); - if (ring->access.unmark_in_use) - ring->access.unmark_in_use(ring); + if (ring->access->unmark_in_use) + ring->access->unmark_in_use(ring); dev_info->currentmode = previous_mode; - if (ring->postdisable) - ring->postdisable(dev_info); + if (ring->setup_ops->postdisable) + ring->setup_ops->postdisable(dev_info); goto error_ret; } } } else { - if (ring->predisable) { - ret = ring->predisable(dev_info); + if (ring->setup_ops->predisable) { + ret = ring->setup_ops->predisable(dev_info); if (ret) goto error_ret; } - if (ring->access.unmark_in_use) - ring->access.unmark_in_use(ring); + if (ring->access->unmark_in_use) + ring->access->unmark_in_use(ring); dev_info->currentmode = INDIO_DIRECT_MODE; - if (ring->postdisable) { - ret = ring->postdisable(dev_info); + if (ring->setup_ops->postdisable) { + ret = ring->setup_ops->postdisable(dev_info); if (ret) goto error_ret; } @@ -584,3 +582,28 @@ error_ret: return ret ? ret : len; } EXPORT_SYMBOL(iio_scan_el_ts_store); + +int iio_sw_ring_preenable(struct iio_dev *indio_dev) +{ + struct iio_ring_buffer *ring = indio_dev->ring; + size_t size; + dev_dbg(&indio_dev->dev, "%s\n", __func__); + /* Check if there are any scan elements enabled, if not fail*/ + if (!(ring->scan_count || ring->scan_timestamp)) + return -EINVAL; + if (ring->scan_timestamp) + if (ring->scan_count) + /* Timestamp (aligned to s64) and data */ + size = (((ring->scan_count * ring->bpe) + + sizeof(s64) - 1) + & ~(sizeof(s64) - 1)) + + sizeof(s64); + else /* Timestamp only */ + size = sizeof(s64); + else /* Data only */ + size = ring->scan_count * ring->bpe; + ring->access->set_bytes_per_datum(ring, size); + + return 0; +} +EXPORT_SYMBOL(iio_sw_ring_preenable); |