diff options
Diffstat (limited to 'drivers/staging/greybus/kernel_ver.h')
| -rw-r--r-- | drivers/staging/greybus/kernel_ver.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/staging/greybus/kernel_ver.h b/drivers/staging/greybus/kernel_ver.h index d0e05e656475..f3cb1895c092 100644 --- a/drivers/staging/greybus/kernel_ver.h +++ b/drivers/staging/greybus/kernel_ver.h @@ -248,4 +248,45 @@ static inline size_t sg_pcopy_from_buffer(struct scatterlist *sgl, list_entry((ptr)->prev, type, member) #endif +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 17, 0) +/* + * Before this version the led classdev did not support groups + */ +#define LED_HAVE_GROUPS +#endif + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0) +/* + * At this time the internal API for the set brightness was changed to the async + * version, and one sync API was added to handle cases that need immediate + * effect. Also, the led class flash and lock for sysfs access was introduced. + */ +#define LED_HAVE_SET_SYNC +#define LED_HAVE_FLASH +#define LED_HAVE_LOCK +#include <linux/led-class-flash.h> +#endif + +#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0) +/* + * From this version upper it was introduced the possibility to disable led + * sysfs entries to handle control of the led device to v4l2, which was + * implemented later. So, before that this should return false. + */ +#include <linux/leds.h> +static inline bool led_sysfs_is_disabled(struct led_classdev *led_cdev) +{ + return false; +} +#endif + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) +/* + * New helper functions for registering/unregistering flash led devices as v4l2 + * subdevices were added. + */ +#define V4L2_HAVE_FLASH +#include <media/v4l2-flash-led-class.h> +#endif + #endif /* __GREYBUS_KERNEL_VER_H */ |