Commit 7e151f53 authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

drm/i915/dsb: Provide intel_dsb_head() and intel_dsb_size() 



The upcoming flip queue implementation will need to know the
DSB buffer head and size. Expose those outside intel_dsb.c.

Reviewed-by: default avatarUma Shankar <uma.shankar@intel.com>
Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250612145018.8735-3-ville.syrjala@linux.intel.com
parent ed9434c6

drivers/gpu/drm/i915/display/intel_dsb.c

+7 −2
Original line number Diff line number Diff line
@@ -241,14 +241,19 @@ static bool is_dsb_busy(struct intel_display *display, enum pipe pipe, 
	return intel_de_read_fw(display, DSB_CTRL(pipe, dsb_id)) & DSB_STATUS_BUSY;

}



static unsigned int intel_dsb_head(struct intel_dsb *dsb)

unsigned int intel_dsb_size(struct intel_dsb *dsb)

{

	return dsb->free_pos * 4;

}



unsigned int intel_dsb_head(struct intel_dsb *dsb)

{

	return intel_dsb_buffer_ggtt_offset(&dsb->dsb_buf);

}



static unsigned int intel_dsb_tail(struct intel_dsb *dsb)

{

	return intel_dsb_buffer_ggtt_offset(&dsb->dsb_buf) + dsb->free_pos * 4;

	return intel_dsb_buffer_ggtt_offset(&dsb->dsb_buf) + intel_dsb_size(dsb);

}



static void intel_dsb_ins_align(struct intel_dsb *dsb)

drivers/gpu/drm/i915/display/intel_dsb.h

+2 −0
Original line number Diff line number Diff line
@@ -26,6 +26,8 @@ enum intel_dsb_id { 
	I915_MAX_DSBS,

};



unsigned int intel_dsb_size(struct intel_dsb *dsb);

unsigned int intel_dsb_head(struct intel_dsb *dsb);

struct intel_dsb *intel_dsb_prepare(struct intel_atomic_state *state,

				    struct intel_crtc *crtc,

				    enum intel_dsb_id dsb_id,