For each LM there is at max 1 peer LM which can be driven by the same
CTL, so there no need to have a mask instead of just an ID of the peer
LM.
Signed-off-by: Dmitry Baryshkov <dmitry.barysh...@linaro.org>
---
.../gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c | 2 +-
.../gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h | 4 +--
drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c | 30 +++++--------------
3 files changed, 11 insertions(+), 25 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
index b569030a0847..e7b132dce849 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
@@ -571,7 +571,7 @@ static const struct dpu_lm_sub_blks sdm845_lm_sblk = {
.features = _fmask, \
.sblk = _sblk, \
.pingpong = _pp, \
- .lm_pair_mask = (1 << _lmpair), \
+ .lm_pair = _lmpair, \
.dspp = _dspp \
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
index 4dfd8a20ad5c..3199bf8dc085 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
@@ -498,14 +498,14 @@ struct dpu_sspp_cfg {
* @features bit mask identifying sub-blocks/features
* @sblk: LM Sub-blocks information
* @pingpong: ID of connected PingPong, PINGPONG_MAX if unsupported
- * @lm_pair_mask: Bitmask of LMs that can be controlled by same CTL
+ * @lm_pair: ID of LM that can be controlled by same CTL
*/
struct dpu_lm_cfg {
DPU_HW_BLK_INFO;
const struct dpu_lm_sub_blks *sblk;
u32 pingpong;
u32 dspp;
- unsigned long lm_pair_mask;
+ unsigned long lm_pair;
};
/**
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
index ec4387ad1182..030bc30aba64 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
@@ -121,28 +121,19 @@ static bool _dpu_rm_needs_split_display(const struct
msm_display_topology *top)
}
/**
- * _dpu_rm_check_lm_peer - check if a mixer is a peer of the primary
+ * _dpu_rm_get_lm_peer - get the id of a mixer which is a peer of the primary
* @rm: dpu resource manager handle
* @primary_idx: index of primary mixer in rm->mixer_blks[]
- * @peer_idx: index of other mixer in rm->mixer_blks[]
- * Return: true if rm->mixer_blks[peer_idx] is a peer of
- * rm->mixer_blks[primary_idx]
*/
-static bool _dpu_rm_check_lm_peer(struct dpu_rm *rm, int primary_idx,
- int peer_idx)
+static int _dpu_rm_get_lm_peer(struct dpu_rm *rm, int primary_idx)
{
const struct dpu_lm_cfg *prim_lm_cfg;
- const struct dpu_lm_cfg *peer_cfg;
prim_lm_cfg = to_dpu_hw_mixer(rm->mixer_blks[primary_idx])->cap;
- peer_cfg = to_dpu_hw_mixer(rm->mixer_blks[peer_idx])->cap;
- if (!test_bit(peer_cfg->id, &prim_lm_cfg->lm_pair_mask)) {
- DPU_DEBUG("lm %d not peer of lm %d\n", peer_cfg->id,
- peer_cfg->id);
- return false;
- }
- return true;
+ if (prim_lm_cfg->lm_pair >= LM_0 && prim_lm_cfg->lm_pair < LM_MAX)
+ return prim_lm_cfg->lm_pair - LM_0;
+ return -EINVAL;
}
static int _dpu_rm_reserve_lms(struct dpu_rm *rm,
@@ -176,17 +167,12 @@ static int _dpu_rm_reserve_lms(struct dpu_rm *rm,
++lm_count;
/* Valid primary mixer found, find matching peers */
- for (j = i + 1; j < ARRAY_SIZE(rm->mixer_blks) &&
- lm_count < reqs->topology.num_lm; j++) {
+ j = _dpu_rm_get_lm_peer(rm, i);
+ /* ignore the peer if there is an error or if the peer was
already processed */
+ if (j < 0 || j < i) {
if (!rm->mixer_blks[j])
continue;
- if (!_dpu_rm_check_lm_peer(rm, i, j)) {
- DPU_DEBUG("lm %d not peer of lm %d\n", LM_0 + j,
- LM_0 + i);
- continue;
- }
-
if (reserved_by_other(global_state->mixer_to_enc_id, j,
enc_id)) {
DPU_DEBUG("lm %d already reserved\n", j + LM_0);
continue;
--
2.30.2
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