[PATCH v2 2/5] drm/msm/dp: Modify prototype of encoder based API

From: Bjorn Andersson
Date: Wed Aug 25 2021 - 19:41:31 EST


Functions in the DisplayPort code that relates to individual instances
(encoders) are passed both the struct msm_dp and the struct drm_encoder. But
in a situation where multiple DP instances would exist this means that
the caller need to resolve which struct msm_dp relates to the struct
drm_encoder at hand.

Store a reference to the struct msm_dp associated with each
dpu_encoder_virt to allow the particular instance to be associate with
the encoder in the following patch.

Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
---

Changes since v1:
- Store msm_dp reference in dpu_encoder_virt instead of carrying a list of them
and searching repeatedly

drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 23 ++++++++++++---------
1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 0e9d3fa1544b..b7f33da2799c 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -168,6 +168,7 @@ enum dpu_enc_rc_states {
* @vsync_event_work: worker to handle vsync event for autorefresh
* @topology: topology of the display
* @idle_timeout: idle timeout duration in milliseconds
+ * @dp: msm_dp pointer, for DP encoders
*/
struct dpu_encoder_virt {
struct drm_encoder base;
@@ -206,6 +207,8 @@ struct dpu_encoder_virt {
struct msm_display_topology topology;

u32 idle_timeout;
+
+ struct msm_dp *dp;
};

#define to_dpu_encoder_virt(x) container_of(x, struct dpu_encoder_virt, base)
@@ -1000,8 +1003,8 @@ static void dpu_encoder_virt_mode_set(struct drm_encoder *drm_enc,

trace_dpu_enc_mode_set(DRMID(drm_enc));

- if (drm_enc->encoder_type == DRM_MODE_ENCODER_TMDS && priv->dp)
- msm_dp_display_mode_set(priv->dp, drm_enc, mode, adj_mode);
+ if (drm_enc->encoder_type == DRM_MODE_ENCODER_TMDS)
+ msm_dp_display_mode_set(dpu_enc->dp, drm_enc, mode, adj_mode);

list_for_each_entry(conn_iter, connector_list, head)
if (conn_iter->encoder == drm_enc)
@@ -1182,9 +1185,8 @@ static void dpu_encoder_virt_enable(struct drm_encoder *drm_enc)

_dpu_encoder_virt_enable_helper(drm_enc);

- if (drm_enc->encoder_type == DRM_MODE_ENCODER_TMDS && priv->dp) {
- ret = msm_dp_display_enable(priv->dp,
- drm_enc);
+ if (drm_enc->encoder_type == DRM_MODE_ENCODER_TMDS) {
+ ret = msm_dp_display_enable(dpu_enc->dp, drm_enc);
if (ret) {
DPU_ERROR_ENC(dpu_enc, "dp display enable failed: %d\n",
ret);
@@ -1224,8 +1226,8 @@ static void dpu_encoder_virt_disable(struct drm_encoder *drm_enc)
/* wait for idle */
dpu_encoder_wait_for_event(drm_enc, MSM_ENC_TX_COMPLETE);

- if (drm_enc->encoder_type == DRM_MODE_ENCODER_TMDS && priv->dp) {
- if (msm_dp_display_pre_disable(priv->dp, drm_enc))
+ if (drm_enc->encoder_type == DRM_MODE_ENCODER_TMDS) {
+ if (msm_dp_display_pre_disable(dpu_enc->dp, drm_enc))
DPU_ERROR_ENC(dpu_enc, "dp display push idle failed\n");
}

@@ -1253,8 +1255,8 @@ static void dpu_encoder_virt_disable(struct drm_encoder *drm_enc)

DPU_DEBUG_ENC(dpu_enc, "encoder disabled\n");

- if (drm_enc->encoder_type == DRM_MODE_ENCODER_TMDS && priv->dp) {
- if (msm_dp_display_disable(priv->dp, drm_enc))
+ if (drm_enc->encoder_type == DRM_MODE_ENCODER_TMDS) {
+ if (msm_dp_display_disable(dpu_enc->dp, drm_enc))
DPU_ERROR_ENC(dpu_enc, "dp display disable failed\n");
}

@@ -2170,7 +2172,8 @@ int dpu_encoder_setup(struct drm_device *dev, struct drm_encoder *enc,
timer_setup(&dpu_enc->vsync_event_timer,
dpu_encoder_vsync_event_handler,
0);
-
+ else if (disp_info->intf_type == DRM_MODE_ENCODER_TMDS)
+ dpu_enc->dp = priv->dp;

INIT_DELAYED_WORK(&dpu_enc->delayed_off_work,
dpu_encoder_off_work);
--
2.29.2