diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dmub/inc/dmub_rb.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dmub/inc/dmub_rb.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_rb.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_rb.h index ac22744eaa94..ade688fd32f0 100644 --- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_rb.h +++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_rb.h @@ -113,6 +113,23 @@ static inline bool dmub_rb_pop_front(struct dmub_rb *rb) return true; } +static inline void dmub_rb_flush_pending(const struct dmub_rb *rb) +{ + uint8_t buf[DMUB_RB_CMD_SIZE]; + uint32_t rptr = rb->rptr; + uint32_t wptr = rb->wrpt; + + while (rptr != wptr) { + const uint8_t *data = (const uint8_t *)rb->base_address + rptr; + + dmub_memcpy(buf, data, DMUB_RB_CMD_SIZE); + + rptr += DMUB_RB_CMD_SIZE; + if (rptr >= rb->capacity) + rptr %= rb->capacity; + } +} + static inline void dmub_rb_init(struct dmub_rb *rb, struct dmub_rb_init_params *init_params) { |