Initialize dpu encoder and connector for writeback if the
target supports it in the catalog.
Signed-off-by: Abhinav Kumar <quic_abhin...@quicinc.com>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 37 ++++++++++++-----
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 62 +++++++++++++++++++++++++++++
2 files changed, 88 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index b51a677..3746432 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -2066,7 +2066,7 @@ static void dpu_encoder_early_unregister(struct
drm_encoder *encoder)
}
static int dpu_encoder_virt_add_phys_encs(
- u32 display_caps,
+ struct msm_display_info *disp_info,
struct dpu_encoder_virt *dpu_enc,
struct dpu_enc_phys_init_params *params)
{
@@ -2085,7 +2085,7 @@ static int dpu_encoder_virt_add_phys_encs(
return -EINVAL;
}
- if (display_caps & MSM_DISPLAY_CAP_VID_MODE) {
+ if (disp_info->capabilities & MSM_DISPLAY_CAP_VID_MODE) {
enc = dpu_encoder_phys_vid_init(params);
if (IS_ERR_OR_NULL(enc)) {
@@ -2098,7 +2098,7 @@ static int dpu_encoder_virt_add_phys_encs(
++dpu_enc->num_phys_encs;
}
- if (display_caps & MSM_DISPLAY_CAP_CMD_MODE) {
+ if (disp_info->capabilities & MSM_DISPLAY_CAP_CMD_MODE) {
enc = dpu_encoder_phys_cmd_init(params);
if (IS_ERR_OR_NULL(enc)) {
@@ -2111,6 +2111,19 @@ static int dpu_encoder_virt_add_phys_encs(
++dpu_enc->num_phys_encs;
}
+ if (disp_info->intf_type == DRM_MODE_ENCODER_VIRTUAL) {
+ enc = dpu_encoder_phys_wb_init(params);
+
+ if (IS_ERR_OR_NULL(enc)) {
+ DPU_ERROR_ENC(dpu_enc, "failed to init wb enc: %ld\n",
+ PTR_ERR(enc));
+ return enc == NULL ? -EINVAL : PTR_ERR(enc);
+ }
+
+ dpu_enc->phys_encs[dpu_enc->num_phys_encs] = enc;
+ ++dpu_enc->num_phys_encs;
+ }
+
if (params->split_role == ENC_ROLE_SLAVE)
dpu_enc->cur_slave = enc;
else
@@ -2199,9 +2212,8 @@ static int dpu_encoder_setup_display(struct
dpu_encoder_virt *dpu_enc,
}
if (!ret) {
- ret =
dpu_encoder_virt_add_phys_encs(disp_info->capabilities,
-
dpu_enc,
-
&phys_params);
+ ret = dpu_encoder_virt_add_phys_encs(disp_info,
+ dpu_enc, &phys_params);
if (ret)
DPU_ERROR_ENC(dpu_enc, "failed to add phys
encs\n");
}
@@ -2317,11 +2329,14 @@ struct drm_encoder *dpu_encoder_init(struct drm_device
*dev,
if (!dpu_enc)
return ERR_PTR(-ENOMEM);
- rc = drm_encoder_init(dev, &dpu_enc->base, &dpu_encoder_funcs,
- drm_enc_mode, NULL);
- if (rc) {
- devm_kfree(dev->dev, dpu_enc);
- return ERR_PTR(rc);
+ /* this is handled by drm_writeback_connector_init for virtual encoder
*/
+ if (drm_enc_mode != DRM_MODE_ENCODER_VIRTUAL) {
+ rc = drm_encoder_init(dev, &dpu_enc->base, &dpu_encoder_funcs,
+ drm_enc_mode, NULL);
+ if (rc) {
+ devm_kfree(dev->dev, dpu_enc);
+ return ERR_PTR(rc);
+ }
}
drm_encoder_helper_add(&dpu_enc->base, &dpu_encoder_helper_funcs);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index 47fe11a..6327ba9 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -1,5 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) 2014-2018, The Linux Foundation. All rights reserved.
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdcl...@gmail.com>
@@ -15,6 +16,7 @@
#include <drm/drm_crtc.h>
#include <drm/drm_file.h>
#include <drm/drm_vblank.h>
+#include <drm/drm_writeback.h>
#include "msm_drv.h"
#include "msm_mmu.h"
@@ -29,6 +31,7 @@
#include "dpu_kms.h"
#include "dpu_plane.h"
#include "dpu_vbif.h"
+#include "dpu_writeback.h"
#define CREATE_TRACE_POINTS
#include "dpu_trace.h"
@@ -642,6 +645,56 @@ static int _dpu_kms_initialize_displayport(struct
drm_device *dev,
return 0;
}
+static int _dpu_kms_initialize_writeback(struct drm_device *dev,
+ struct msm_drm_private *priv, struct dpu_kms *dpu_kms)
+{
+ struct drm_encoder *encoder = NULL;
+ struct msm_display_info info;
+ int rc, i;
+ const u32 *wb_formats;
+ int n_formats;
+
+ encoder = dpu_encoder_init(dev, DRM_MODE_ENCODER_VIRTUAL);
+ if (IS_ERR(encoder)) {
+ DPU_ERROR("encoder init failed for dsi display\n");
+ return PTR_ERR(encoder);
+ }
+
+ memset(&info, 0, sizeof(info));
+
+ for (i = 0; i < dpu_kms->catalog->wb_count; i++) {
+ if (dpu_kms->catalog->wb[i].id == WB_2) {
+ wb_formats = dpu_kms->catalog->wb[i].format_list;
+ n_formats = dpu_kms->catalog->wb[i].num_formats;
+ }
+ }
+
+ rc = dpu_writeback_init(dev, encoder, encoder->helper_private,
wb_formats,
+ n_formats);
+ if (rc) {
+ DPU_ERROR("dpu_writeback_init, rc = %d\n", rc);
+ drm_encoder_cleanup(encoder);
+ return rc;
+ }
+
+ priv->encoders[priv->num_encoders++] = encoder;
+
+ info.num_of_h_tiles = 1;
+ /* use only WB idx 2 instance for DPU */
+ info.h_tile_instance[0] = WB_2;
+ info.capabilities = MSM_DISPLAY_CAP_HOT_PLUG | MSM_DISPLAY_CAP_EDID;
+ info.intf_type = encoder->encoder_type;
+
+ rc = dpu_encoder_setup(dev, encoder, &info);
+ if (rc) {
+ DPU_ERROR("failed to setup DPU encoder %d: rc:%d\n",
+ encoder->base.id, rc);
+ return rc;
+ }
+
+ return 0;
+}
+
/**
* _dpu_kms_setup_displays - create encoders, bridges and connectors
* for underlying displays
@@ -668,6 +721,15 @@ static int _dpu_kms_setup_displays(struct drm_device *dev,
return rc;
}
+ /* Since WB isn't a driver check the catalog before initializing */
+ if (dpu_kms->catalog->wb_count) {
+ rc = _dpu_kms_initialize_writeback(dev, priv, dpu_kms);
+ if (rc) {
+ DPU_ERROR("initialize_WB failed, rc = %d\n", rc);
+ return rc;
+ }
+ }
+
return rc;
}
--
2.7.4
