michaelh/zephyr
1
0
Fork 0
Code Releases Activity

adc: add syscall for adc_read_async()

Browse source 
Same restriction as adc_read(), callback must be NULL.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit is contained in:
Andrew Boie 2019-04-01 12:12:43 -07:00 • committed by Anas Nashif
commit 3ba8b6cd6e
2 changed files with 29 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

21
drivers/adc/adc_handlers.c
View file

@ -62,3 +62,24 @@ Z_SYSCALL_HANDLER(adc_read, dev, user_sequence)
return z_impl_adc_read((struct device *)dev, &sequence);
}
#ifdef CONFIG_ADC_ASYNC
Z_SYSCALL_HANDLER(adc_read_async, dev, user_sequence, async)
{
struct adc_sequence sequence;
struct adc_sequence_options options;
Z_OOPS(Z_SYSCALL_DRIVER_ADC(dev, read_async));
Z_OOPS(Z_SYSCALL_VERIFY_MSG(copy_sequence(&sequence, &options,
(struct adc_sequence *)user_sequence),
"invalid ADC sequence"));
if (sequence.options != NULL) {
Z_OOPS(Z_SYSCALL_VERIFY_MSG(sequence.options->callback == NULL,
"ADC sequence callbacks forbidden from user mode"));
}
Z_OOPS(Z_SYSCALL_OBJ(async, K_OBJ_POLL_SIGNAL));
return z_impl_adc_read_async((struct device *)dev, &sequence,
(struct k_poll_signal *)async);
}
#endif /* CONFIG_ADC_ASYNC */

11
include/adc.h
View file

@ -362,9 +362,14 @@ static inline int z_impl_adc_read(struct device *dev,
* @returns 0 on success, negative error code otherwise.
*
*/
static inline int adc_read_async(struct device *dev,
const struct adc_sequence *sequence,
struct k_poll_signal *async)
__syscall int adc_read_async(struct device *dev,
const struct adc_sequence *sequence,
struct k_poll_signal *async);
static inline int z_impl_adc_read_async(struct device *dev,
const struct adc_sequence *sequence,
struct k_poll_signal *async)
{
const struct adc_driver_api *api = dev->driver_api;