diff options
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/adc/ti_am335x_adc.c | 9 | ||||
| -rw-r--r-- | drivers/iio/iio_core.h | 9 | ||||
| -rw-r--r-- | drivers/iio/industrialio-buffer.c | 18 | ||||
| -rw-r--r-- | drivers/iio/industrialio-core.c | 14 | ||||
| -rw-r--r-- | drivers/iio/industrialio-triggered-buffer.c | 11 |
5 files changed, 34 insertions, 27 deletions
diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c index b730864..d550ac7 100644 --- a/drivers/iio/adc/ti_am335x_adc.c +++ b/drivers/iio/adc/ti_am335x_adc.c @@ -264,16 +264,8 @@ static int tiadc_iio_buffered_hardware_setup(struct iio_dev *indio_dev, indio_dev->setup_ops = setup_ops; indio_dev->modes |= INDIO_BUFFER_HARDWARE; - ret = iio_buffer_register(indio_dev, - indio_dev->channels, - indio_dev->num_channels); - if (ret) - goto error_free_irq; - return 0; -error_free_irq: - free_irq(irq, indio_dev); error_kfifo_free: iio_kfifo_free(indio_dev->buffer); return ret; @@ -285,7 +277,6 @@ static void tiadc_iio_buffered_hardware_remove(struct iio_dev *indio_dev) free_irq(adc_dev->mfd_tscadc->irq, indio_dev); iio_kfifo_free(indio_dev->buffer); - iio_buffer_unregister(indio_dev); } diff --git a/drivers/iio/iio_core.h b/drivers/iio/iio_core.h index 5f0ea77..3598835 100644 --- a/drivers/iio/iio_core.h +++ b/drivers/iio/iio_core.h @@ -48,6 +48,8 @@ unsigned int iio_buffer_poll(struct file *filp, ssize_t iio_buffer_read_first_n_outer(struct file *filp, char __user *buf, size_t n, loff_t *f_ps); +int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev); +void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev); #define iio_buffer_poll_addr (&iio_buffer_poll) #define iio_buffer_read_first_n_outer_addr (&iio_buffer_read_first_n_outer) @@ -60,6 +62,13 @@ void iio_buffer_wakeup_poll(struct iio_dev *indio_dev); #define iio_buffer_poll_addr NULL #define iio_buffer_read_first_n_outer_addr NULL +static inline int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev) {} + static inline void iio_disable_all_buffers(struct iio_dev *indio_dev) {} static inline void iio_buffer_wakeup_poll(struct iio_dev *indio_dev) {} diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index f667e4e..8bb3e64 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -385,14 +385,16 @@ static int iio_buffer_add_channel_sysfs(struct iio_dev *indio_dev, static const char * const iio_scan_elements_group_name = "scan_elements"; -int iio_buffer_register(struct iio_dev *indio_dev, - const struct iio_chan_spec *channels, - int num_channels) +int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev) { struct iio_dev_attr *p; struct attribute **attr; struct iio_buffer *buffer = indio_dev->buffer; int ret, i, attrn, attrcount, attrcount_orig = 0; + const struct iio_chan_spec *channels; + + if (!buffer) + return 0; if (buffer->attrs) indio_dev->groups[indio_dev->groupcounter++] = buffer->attrs; @@ -404,9 +406,10 @@ int iio_buffer_register(struct iio_dev *indio_dev, } attrcount = attrcount_orig; INIT_LIST_HEAD(&buffer->scan_el_dev_attr_list); + channels = indio_dev->channels; if (channels) { /* new magic */ - for (i = 0; i < num_channels; i++) { + for (i = 0; i < indio_dev->num_channels; i++) { if (channels[i].scan_index < 0) continue; @@ -463,15 +466,16 @@ error_cleanup_dynamic: return ret; } -EXPORT_SYMBOL(iio_buffer_register); -void iio_buffer_unregister(struct iio_dev *indio_dev) +void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev) { + if (!indio_dev->buffer) + return; + kfree(indio_dev->buffer->scan_mask); kfree(indio_dev->buffer->scan_el_group.attrs); iio_free_chan_devattr_list(&indio_dev->buffer->scan_el_dev_attr_list); } -EXPORT_SYMBOL(iio_buffer_unregister); ssize_t iio_buffer_read_length(struct device *dev, struct device_attribute *attr, diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index 45bb3a4..ee442ee 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -1158,11 +1158,19 @@ int iio_device_register(struct iio_dev *indio_dev) "Failed to register debugfs interfaces\n"); return ret; } + + ret = iio_buffer_alloc_sysfs_and_mask(indio_dev); + if (ret) { + dev_err(indio_dev->dev.parent, + "Failed to create buffer sysfs interfaces\n"); + goto error_unreg_debugfs; + } + ret = iio_device_register_sysfs(indio_dev); if (ret) { dev_err(indio_dev->dev.parent, "Failed to register sysfs interfaces\n"); - goto error_unreg_debugfs; + goto error_buffer_free_sysfs; } ret = iio_device_register_eventset(indio_dev); if (ret) { @@ -1195,6 +1203,8 @@ error_unreg_eventset: iio_device_unregister_eventset(indio_dev); error_free_sysfs: iio_device_unregister_sysfs(indio_dev); +error_buffer_free_sysfs: + iio_buffer_free_sysfs_and_mask(indio_dev); error_unreg_debugfs: iio_device_unregister_debugfs(indio_dev); return ret; @@ -1223,6 +1233,8 @@ void iio_device_unregister(struct iio_dev *indio_dev) iio_buffer_wakeup_poll(indio_dev); mutex_unlock(&indio_dev->info_exist_lock); + + iio_buffer_free_sysfs_and_mask(indio_dev); } EXPORT_SYMBOL(iio_device_unregister); diff --git a/drivers/iio/industrialio-triggered-buffer.c b/drivers/iio/industrialio-triggered-buffer.c index d6f54930..61a5d04 100644 --- a/drivers/iio/industrialio-triggered-buffer.c +++ b/drivers/iio/industrialio-triggered-buffer.c @@ -32,7 +32,7 @@ static const struct iio_buffer_setup_ops iio_triggered_buffer_setup_ops = { * * 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. + * pollfunc. * * Before calling this function the indio_dev structure should already be * completely initialized, but not yet registered. In practice this means that @@ -78,16 +78,8 @@ int iio_triggered_buffer_setup(struct iio_dev *indio_dev, /* 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: @@ -101,7 +93,6 @@ EXPORT_SYMBOL(iio_triggered_buffer_setup); */ void iio_triggered_buffer_cleanup(struct iio_dev *indio_dev) { - iio_buffer_unregister(indio_dev); iio_dealloc_pollfunc(indio_dev->pollfunc); iio_kfifo_free(indio_dev->buffer); } |