torvalds/linux
3
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-04-14 10:19:08 +08:00
Code Issues Packages Projects Releases Wiki Activity

drm/i915/dsb: Introduce intel_dsb_wait_vblank_delay()

Browse Source 
Add intel_dsb_wait_vblank_delay() which instructs the DSB
to wait for duration between the undelayed and delayed vblanks.
We'll need this as the DSB can only directly wait for the
undelayed vblank, but we'll need to wait until the delayed
vblank has elapsed as well.

Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240930170415.23841-10-ville.syrjala@linux.intel.com
This commit is contained in:
Ville Syrjälä
2024-09-30 20:04:11 +03:00
parent d4f9a053bf
commit 08222ca194
2 changed files with 13 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/gpu/drm/i915/display/intel_dsb.c
View File

@@ -637,6 +637,17 @@ void intel_dsb_chain(struct intel_atomic_state *state,
wait_for_vblank ? DSB_WAIT_FOR_VBLANK : 0);
}
void intel_dsb_wait_vblank_delay(struct intel_atomic_state *state,
struct intel_dsb *dsb)
{
struct intel_crtc *crtc = dsb->crtc;
const struct intel_crtc_state *crtc_state = pre_commit_crtc_state(state, crtc);
int usecs = intel_scanlines_to_usecs(&crtc_state->hw.adjusted_mode,
dsb_vblank_delay(crtc_state)) + 1;
intel_dsb_wait_usec(dsb, usecs);
}
static void _intel_dsb_commit(struct intel_dsb *dsb, u32 ctrl,
int hw_dewake_scanline)
{

2
drivers/gpu/drm/i915/display/intel_dsb.h
View File

@@ -42,6 +42,8 @@ void intel_dsb_nonpost_end(struct intel_dsb *dsb);
void intel_dsb_interrupt(struct intel_dsb *dsb);
void intel_dsb_wait_usec(struct intel_dsb *dsb, int count);
void intel_dsb_wait_vblanks(struct intel_dsb *dsb, int count);
void intel_dsb_wait_vblank_delay(struct intel_atomic_state *state,
struct intel_dsb *dsb);
void intel_dsb_wait_scanline_in(struct intel_atomic_state *state,
struct intel_dsb *dsb,
int lower, int upper);