On 30/01/2023 17:21, Kalyan Thota wrote:
Some features like ctm can be enabled dynamically. Release and reserve
the dpu resources whenever a topology change occurs such that
required hw blocks are allocated appropriately.
Changes in v1:
- Avoid mode_set call directly instead change the mode_changed (Dmitry)
Thanks, I like the overall idea. Minor nits below.
Also, could you please fix your scripts to include the PATCH keyword
into the subject? If you do `git format-patches -# -v#`, where # is the
number of commits to include and the version of the patchset, it will do
the trick on its own.
Signed-off-by: Kalyan Thota <quic_kalyant@xxxxxxxxxxx>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h | 2 ++
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 42 ++++++++++++++++++-----------
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h | 4 ++-
3 files changed, 32 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
index 539b68b..58e8c72 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
@@ -204,6 +204,7 @@ struct dpu_crtc {
* @hw_ctls : List of active ctl paths
* @crc_source : CRC source
* @crc_frame_skip_count: Number of frames skipped before getting CRC
+ * @ctm_enabled : Cached ctm reservation state
Nit: we do not reserve CTMs. We reserve DSPPs.
So, ctm_enabled is 'Cached color management enablement state'.
*/
struct dpu_crtc_state {
struct drm_crtc_state base;
@@ -225,6 +226,7 @@ struct dpu_crtc_state {
enum dpu_crtc_crc_source crc_source;
int crc_frame_skip_count;
+ bool ctm_enabled;
};
#define to_dpu_crtc_state(x) \
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 3bd46b4..0ddf2c9 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -217,6 +217,22 @@ static u32 dither_matrix[DITHER_MATRIX_SZ] = {
15, 7, 13, 5, 3, 11, 1, 9, 12, 4, 14, 6, 0, 8, 2, 10
};
+static bool _dpu_enc_is_dspps_changed(struct drm_crtc_state *crtc_state,
+ struct msm_display_topology topology)
+{
+ struct dpu_crtc_state *cstate = to_dpu_crtc_state(crtc_state);
+
+ if (drm_atomic_crtc_needs_modeset(crtc_state))
+ return true;
+
+ if ((cstate->ctm_enabled && !topology.num_dspp) ||
+ (!cstate->ctm_enabled && topology.num_dspp)) {
+ crtc_state->mode_changed = true;
+ return true;
+ }
+
+ return false;
+}
bool dpu_encoder_is_widebus_enabled(const struct drm_encoder *drm_enc)
{
@@ -638,25 +654,21 @@ static int dpu_encoder_virt_atomic_check(
if (ret) {
DPU_ERROR_ENC(dpu_enc,
"mode unsupported, phys idx %d\n", i);
- break;
+ return ret;
This deserves a separate commit with the proper Fixes: tag.
}
}
topology = dpu_encoder_get_topology(dpu_enc, dpu_kms, adj_mode, crtc_state);
+ _dpu_enc_is_dspps_changed(crtc_state, topology);
+
/* Reserve dynamic resources now. */
- if (!ret) {
- /*
- * Release and Allocate resources on every modeset
- * Dont allocate when active is false.
- */
- if (drm_atomic_crtc_needs_modeset(crtc_state)) {
- dpu_rm_release(global_state, drm_enc);
+ if (drm_atomic_crtc_needs_modeset(crtc_state)) {
+ dpu_rm_release(global_state, drm_enc);
- if (!crtc_state->active_changed || crtc_state->active)
- ret = dpu_rm_reserve(&dpu_kms->rm, global_state,
- drm_enc, crtc_state, topology);
- }
+ if (crtc_state->enable)
+ ret = dpu_rm_reserve(&dpu_kms->rm, global_state,
+ drm_enc, crtc_state, topology);
}
trace_dpu_enc_atomic_check_flags(DRMID(drm_enc), adj_mode->flags);
@@ -1027,7 +1039,7 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc,
struct dpu_hw_blk *hw_lm[MAX_CHANNELS_PER_ENC];
struct dpu_hw_blk *hw_dspp[MAX_CHANNELS_PER_ENC] = { NULL };
struct dpu_hw_blk *hw_dsc[MAX_CHANNELS_PER_ENC];
- int num_lm, num_ctl, num_pp, num_dsc;
+ int num_lm, num_ctl, num_pp, num_dsc, num_dspp;
unsigned int dsc_mask = 0;
int i;
@@ -1058,7 +1070,7 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc,
drm_enc->base.id, DPU_HW_BLK_CTL, hw_ctl, ARRAY_SIZE(hw_ctl));
num_lm = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state,
drm_enc->base.id, DPU_HW_BLK_LM, hw_lm, ARRAY_SIZE(hw_lm));
- dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state,
+ num_dspp = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state,
drm_enc->base.id, DPU_HW_BLK_DSPP, hw_dspp,
ARRAY_SIZE(hw_dspp));
@@ -1089,7 +1101,7 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc,
}
cstate->num_mixers = num_lm;
-
+ cstate->ctm_enabled = !!num_dspp;
dpu_enc->connector = conn_state->connector;
for (i = 0; i < dpu_enc->num_phys_encs; i++) {
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
index 9e7236e..4cbe20c 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
@@ -150,8 +150,10 @@ int dpu_encoder_setup(struct drm_device *dev, struct drm_encoder *enc,
* dpu_encoder_prepare_commit - prepare encoder at the very beginning of an
* atomic commit, before any registers are written
* @drm_enc: Pointer to previously created drm encoder structure
+ * @crtc_state: Pointer to drm crtc state
*/
-void dpu_encoder_prepare_commit(struct drm_encoder *drm_enc);
+void dpu_encoder_prepare_commit(struct drm_encoder *drm_enc,
+ struct drm_crtc_state *crtc_state);
I think this change on it's own breaks compilation. Please drop it.
/**
* dpu_encoder_set_idle_timeout - set the idle timeout for video
--
With best wishes
Dmitry
