Quelle  dpu_encoder_phys_wb.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved.
 */

#define pr_fmt(fmt) "[drm:%s:%d] " fmt, __func__, __LINE__

#include <linux/debugfs.h>

#include <drm/drm_framebuffer.h>
#include <drm/drm_managed.h>

#include "dpu_encoder_phys.h"
#include "dpu_formats.h"
#include "dpu_hw_top.h"
#include "dpu_hw_wb.h"
#include "dpu_hw_lm.h"
#include "dpu_hw_merge3d.h"
#include "dpu_hw_interrupts.h"
#include "dpu_core_irq.h"
#include "dpu_vbif.h"
#include "dpu_crtc.h"
#include "disp/msm_disp_snapshot.h"

#define to_dpu_encoder_phys_wb(x) \
 container_of(x, struct dpu_encoder_phys_wb, base)

/**
 * dpu_encoder_phys_wb_is_master - report wb always as master encoder
 * @phys_enc: Pointer to physical encoder
 */
static bool dpu_encoder_phys_wb_is_master(struct dpu_encoder_phys *phys_enc)
{
 /* there is only one physical enc for dpu_writeback */
 return true;
}

static bool _dpu_encoder_phys_wb_clk_force_ctrl(struct dpu_hw_wb *wb,
      struct dpu_hw_mdp *mdp,
      bool enable, bool *forced_on)
{
 if (wb->ops.setup_clk_force_ctrl) {
  *forced_on = wb->ops.setup_clk_force_ctrl(wb, enable);
  return true;
 }

 if (mdp->ops.setup_clk_force_ctrl) {
  *forced_on = mdp->ops.setup_clk_force_ctrl(mdp, wb->caps->clk_ctrl, enable);
  return true;
 }

 return false;
}

/**
 * dpu_encoder_phys_wb_set_ot_limit - set OT limit for writeback interface
 * @phys_enc: Pointer to physical encoder
 */
static void dpu_encoder_phys_wb_set_ot_limit(
  struct dpu_encoder_phys *phys_enc)
{
 struct dpu_hw_wb *hw_wb = phys_enc->hw_wb;
 struct dpu_vbif_set_ot_params ot_params;
 bool forced_on = false;

 memset(&ot_params, 0, sizeof(ot_params));
 ot_params.xin_id = hw_wb->caps->xin_id;
 ot_params.num = hw_wb->idx - WB_0;
 ot_params.width = phys_enc->cached_mode.hdisplay;
 ot_params.height = phys_enc->cached_mode.vdisplay;
 ot_params.is_wfd = !dpu_encoder_helper_get_cwb_mask(phys_enc);
 ot_params.frame_rate = drm_mode_vrefresh(&phys_enc->cached_mode);
 ot_params.vbif_idx = hw_wb->caps->vbif_idx;
 ot_params.rd = false;

 if (!_dpu_encoder_phys_wb_clk_force_ctrl(hw_wb, phys_enc->dpu_kms->hw_mdp,
       true, &forced_on))
  return;

 dpu_vbif_set_ot_limit(phys_enc->dpu_kms, &ot_params);

 if (forced_on)
  _dpu_encoder_phys_wb_clk_force_ctrl(hw_wb, phys_enc->dpu_kms->hw_mdp,
          false, &forced_on);
}

/**
 * dpu_encoder_phys_wb_set_qos_remap - set QoS remapper for writeback
 * @phys_enc: Pointer to physical encoder
 */
static void dpu_encoder_phys_wb_set_qos_remap(
  struct dpu_encoder_phys *phys_enc)
{
 struct dpu_hw_wb *hw_wb;
 struct dpu_vbif_set_qos_params qos_params;
 bool forced_on = false;

 if (!phys_enc || !phys_enc->parent || !phys_enc->parent->crtc) {
  DPU_ERROR("invalid arguments\n");
  return;
 }

 if (!phys_enc->hw_wb || !phys_enc->hw_wb->caps) {
  DPU_ERROR("invalid writeback hardware\n");
  return;
 }

 hw_wb = phys_enc->hw_wb;

 memset(&qos_params, 0, sizeof(qos_params));
 qos_params.vbif_idx = hw_wb->caps->vbif_idx;
 qos_params.xin_id = hw_wb->caps->xin_id;
 qos_params.num = hw_wb->idx - WB_0;
 qos_params.is_rt = dpu_encoder_helper_get_cwb_mask(phys_enc);

 DPU_DEBUG("[qos_remap] wb:%d vbif:%d xin:%d is_rt:%d\n",
   qos_params.num,
   qos_params.vbif_idx,
   qos_params.xin_id, qos_params.is_rt);

 if (!_dpu_encoder_phys_wb_clk_force_ctrl(hw_wb, phys_enc->dpu_kms->hw_mdp,
       true, &forced_on))
  return;

 dpu_vbif_set_qos_remap(phys_enc->dpu_kms, &qos_params);

 if (forced_on)
  _dpu_encoder_phys_wb_clk_force_ctrl(hw_wb, phys_enc->dpu_kms->hw_mdp,
          false, &forced_on);
}

/**
 * dpu_encoder_phys_wb_set_qos - set QoS/danger/safe LUTs for writeback
 * @phys_enc: Pointer to physical encoder
 */
static void dpu_encoder_phys_wb_set_qos(struct dpu_encoder_phys *phys_enc)
{
 struct dpu_hw_wb *hw_wb;
 struct dpu_hw_qos_cfg qos_cfg;
 const struct dpu_mdss_cfg *catalog;
 const struct dpu_qos_lut_tbl *qos_lut_tb;

 if (!phys_enc || !phys_enc->dpu_kms || !phys_enc->dpu_kms->catalog) {
  DPU_ERROR("invalid parameter(s)\n");
  return;
 }

 catalog = phys_enc->dpu_kms->catalog;

 hw_wb = phys_enc->hw_wb;

 memset(&qos_cfg, 0, sizeof(struct dpu_hw_qos_cfg));
 qos_cfg.danger_safe_en = true;
 qos_cfg.danger_lut =
  catalog->perf->danger_lut_tbl[DPU_QOS_LUT_USAGE_NRT];

 qos_cfg.safe_lut = catalog->perf->safe_lut_tbl[DPU_QOS_LUT_USAGE_NRT];

 qos_lut_tb = &catalog->perf->qos_lut_tbl[DPU_QOS_LUT_USAGE_NRT];
 qos_cfg.creq_lut = _dpu_hw_get_qos_lut(qos_lut_tb, 0);

 if (hw_wb->ops.setup_qos_lut)
  hw_wb->ops.setup_qos_lut(hw_wb, &qos_cfg);
}

/**
 * dpu_encoder_phys_wb_setup_fb - setup output framebuffer
 * @phys_enc: Pointer to physical encoder
 * @format: Format of the framebuffer
 */
static void dpu_encoder_phys_wb_setup_fb(struct dpu_encoder_phys *phys_enc,
      const struct msm_format *format)
{
 struct dpu_encoder_phys_wb *wb_enc = to_dpu_encoder_phys_wb(phys_enc);
 struct dpu_hw_wb *hw_wb;
 struct dpu_hw_wb_cfg *wb_cfg;
 u32 cdp_usage;

 if (!phys_enc || !phys_enc->dpu_kms || !phys_enc->dpu_kms->catalog) {
  DPU_ERROR("invalid encoder\n");
  return;
 }

 hw_wb = phys_enc->hw_wb;
 wb_cfg = &wb_enc->wb_cfg;
 if (dpu_encoder_helper_get_cwb_mask(phys_enc))
  cdp_usage = DPU_PERF_CDP_USAGE_RT;
 else
  cdp_usage = DPU_PERF_CDP_USAGE_NRT;

 wb_cfg->intf_mode = phys_enc->intf_mode;
 wb_cfg->roi.x1 = 0;
 wb_cfg->roi.x2 = phys_enc->cached_mode.hdisplay;
 wb_cfg->roi.y1 = 0;
 wb_cfg->roi.y2 = phys_enc->cached_mode.vdisplay;

 if (hw_wb->ops.setup_roi)
  hw_wb->ops.setup_roi(hw_wb, wb_cfg);

 if (hw_wb->ops.setup_outformat)
  hw_wb->ops.setup_outformat(hw_wb, wb_cfg, format);

 if (hw_wb->ops.setup_cdp) {
  const struct dpu_perf_cfg *perf = phys_enc->dpu_kms->catalog->perf;

  hw_wb->ops.setup_cdp(hw_wb, format,
         perf->cdp_cfg[cdp_usage].wr_enable);
 }

 if (hw_wb->ops.setup_outaddress)
  hw_wb->ops.setup_outaddress(hw_wb, wb_cfg);
}

/**
 * dpu_encoder_phys_wb_setup_ctl - setup wb pipeline for ctl path
 * @phys_enc:Pointer to physical encoder
 */
static void dpu_encoder_phys_wb_setup_ctl(struct dpu_encoder_phys *phys_enc)
{
 struct dpu_hw_wb *hw_wb;
 struct dpu_hw_cdm *hw_cdm;

 if (!phys_enc) {
  DPU_ERROR("invalid encoder\n");
  return;
 }

 hw_wb = phys_enc->hw_wb;
 hw_cdm = phys_enc->hw_cdm;

 if (phys_enc->dpu_kms->catalog->mdss_ver->core_major_ver >= 5 &&
  (phys_enc->hw_ctl &&
   phys_enc->hw_ctl->ops.setup_intf_cfg)) {
  struct dpu_hw_intf_cfg intf_cfg = {0};
  struct dpu_hw_pingpong *hw_pp = phys_enc->hw_pp;
  enum dpu_3d_blend_mode mode_3d;

  mode_3d = dpu_encoder_helper_get_3d_blend_mode(phys_enc);

  intf_cfg.intf = DPU_NONE;
  intf_cfg.wb = hw_wb->idx;
  intf_cfg.cwb = dpu_encoder_helper_get_cwb_mask(phys_enc);

  if (mode_3d && hw_pp && hw_pp->merge_3d)
   intf_cfg.merge_3d = hw_pp->merge_3d->idx;

  if (hw_cdm)
   intf_cfg.cdm = hw_cdm->idx;

  if (phys_enc->hw_pp->merge_3d && phys_enc->hw_pp->merge_3d->ops.setup_3d_mode)
   phys_enc->hw_pp->merge_3d->ops.setup_3d_mode(phys_enc->hw_pp->merge_3d,
     mode_3d);

  /* setup which pp blk will connect to this wb */
  if (hw_pp && phys_enc->hw_wb->ops.bind_pingpong_blk)
   phys_enc->hw_wb->ops.bind_pingpong_blk(phys_enc->hw_wb,
     phys_enc->hw_pp->idx);

  phys_enc->hw_ctl->ops.setup_intf_cfg(phys_enc->hw_ctl, &intf_cfg);
 } else if (phys_enc->hw_ctl && phys_enc->hw_ctl->ops.setup_intf_cfg) {
  struct dpu_hw_intf_cfg intf_cfg = {0};

  intf_cfg.intf = DPU_NONE;
  intf_cfg.wb = hw_wb->idx;
  intf_cfg.mode_3d =
   dpu_encoder_helper_get_3d_blend_mode(phys_enc);
  phys_enc->hw_ctl->ops.setup_intf_cfg(phys_enc->hw_ctl, &intf_cfg);
 }
}

/**
 * _dpu_encoder_phys_wb_update_flush - flush hardware update
 * @phys_enc: Pointer to physical encoder
 */
static void _dpu_encoder_phys_wb_update_flush(struct dpu_encoder_phys *phys_enc)
{
 struct dpu_hw_wb *hw_wb;
 struct dpu_hw_ctl *hw_ctl;
 struct dpu_hw_pingpong *hw_pp;
 struct dpu_hw_cdm *hw_cdm;
 u32 pending_flush = 0;
 u32 mode_3d;

 if (!phys_enc)
  return;

 hw_wb = phys_enc->hw_wb;
 hw_pp = phys_enc->hw_pp;
 hw_ctl = phys_enc->hw_ctl;
 hw_cdm = phys_enc->hw_cdm;
 mode_3d = dpu_encoder_helper_get_3d_blend_mode(phys_enc);

 DPU_DEBUG("[wb:%d]\n", hw_wb->idx - WB_0);

 if (!hw_ctl) {
  DPU_DEBUG("[wb:%d] no ctl assigned\n", hw_wb->idx - WB_0);
  return;
 }

 if (hw_ctl->ops.update_pending_flush_wb)
  hw_ctl->ops.update_pending_flush_wb(hw_ctl, hw_wb->idx);

 if (mode_3d && hw_ctl->ops.update_pending_flush_merge_3d &&
     hw_pp && hw_pp->merge_3d)
  hw_ctl->ops.update_pending_flush_merge_3d(hw_ctl,
    hw_pp->merge_3d->idx);

 if (hw_cdm && hw_ctl->ops.update_pending_flush_cdm)
  hw_ctl->ops.update_pending_flush_cdm(hw_ctl, hw_cdm->idx);

 if (hw_ctl->ops.get_pending_flush)
  pending_flush = hw_ctl->ops.get_pending_flush(hw_ctl);

 DPU_DEBUG("Pending flush mask for CTL_%d is 0x%x, WB %d\n",
   hw_ctl->idx - CTL_0, pending_flush,
   hw_wb->idx - WB_0);
}

/**
 * dpu_encoder_phys_wb_setup - setup writeback encoder
 * @phys_enc: Pointer to physical encoder
 */
static void dpu_encoder_phys_wb_setup(
  struct dpu_encoder_phys *phys_enc)
{
 struct dpu_hw_wb *hw_wb = phys_enc->hw_wb;
 struct drm_display_mode mode = phys_enc->cached_mode;
 struct dpu_encoder_phys_wb *wb_enc = to_dpu_encoder_phys_wb(phys_enc);
 const struct msm_format *format;

 format = msm_framebuffer_format(wb_enc->wb_job->fb);

 DPU_DEBUG("[mode_set:%d, \"%s\",%d,%d]\n",
   hw_wb->idx - WB_0, mode.name,
   mode.hdisplay, mode.vdisplay);

 dpu_encoder_phys_wb_set_ot_limit(phys_enc);

 dpu_encoder_phys_wb_set_qos_remap(phys_enc);

 dpu_encoder_phys_wb_set_qos(phys_enc);

 dpu_encoder_phys_wb_setup_fb(phys_enc, format);

 dpu_encoder_helper_phys_setup_cdm(phys_enc, format, CDM_CDWN_OUTPUT_WB);

 dpu_encoder_helper_phys_setup_cwb(phys_enc, true);

 dpu_encoder_phys_wb_setup_ctl(phys_enc);
}

/**
 * dpu_encoder_phys_wb_done_irq - writeback interrupt handler
 * @arg: Pointer to writeback encoder
 */
static void dpu_encoder_phys_wb_done_irq(void *arg)
{
 struct dpu_encoder_phys *phys_enc = arg;
 struct dpu_encoder_phys_wb *wb_enc = to_dpu_encoder_phys_wb(phys_enc);

 struct dpu_hw_wb *hw_wb = phys_enc->hw_wb;
 unsigned long lock_flags;
 u32 event = DPU_ENCODER_FRAME_EVENT_DONE;

 DPU_DEBUG("[wb:%d]\n", hw_wb->idx - WB_0);

 dpu_encoder_frame_done_callback(phys_enc->parent, phys_enc, event);

 dpu_encoder_vblank_callback(phys_enc->parent, phys_enc);

 spin_lock_irqsave(phys_enc->enc_spinlock, lock_flags);
 atomic_add_unless(&phys_enc->pending_kickoff_cnt, -1, 0);
 spin_unlock_irqrestore(phys_enc->enc_spinlock, lock_flags);

 if (wb_enc->wb_conn)
  drm_writeback_signal_completion(wb_enc->wb_conn, 0);

 /* Signal any waiting atomic commit thread */
 wake_up_all(&phys_enc->pending_kickoff_wq);
}

/**
 * dpu_encoder_phys_wb_irq_enable - irq control of WB
 * @phys: Pointer to physical encoder
 */
static void dpu_encoder_phys_wb_irq_enable(struct dpu_encoder_phys *phys)
{

 struct dpu_encoder_phys_wb *wb_enc = to_dpu_encoder_phys_wb(phys);

 if (atomic_inc_return(&wb_enc->wbirq_refcount) == 1)
  dpu_core_irq_register_callback(phys->dpu_kms,
            phys->irq[INTR_IDX_WB_DONE],
            dpu_encoder_phys_wb_done_irq,
            phys);
}

/**
 * dpu_encoder_phys_wb_irq_disable - irq control of WB
 * @phys: Pointer to physical encoder
 */
static void dpu_encoder_phys_wb_irq_disable(struct dpu_encoder_phys *phys)
{

 struct dpu_encoder_phys_wb *wb_enc = to_dpu_encoder_phys_wb(phys);

 if (atomic_dec_return(&wb_enc->wbirq_refcount) == 0)
  dpu_core_irq_unregister_callback(phys->dpu_kms, phys->irq[INTR_IDX_WB_DONE]);
}

static void dpu_encoder_phys_wb_atomic_mode_set(
  struct dpu_encoder_phys *phys_enc,
  struct drm_crtc_state *crtc_state,
  struct drm_connector_state *conn_state)
{

 phys_enc->irq[INTR_IDX_WB_DONE] = phys_enc->hw_wb->caps->intr_wb_done;
}

static void _dpu_encoder_phys_wb_handle_wbdone_timeout(
  struct dpu_encoder_phys *phys_enc)
{
 struct dpu_encoder_phys_wb *wb_enc = to_dpu_encoder_phys_wb(phys_enc);
 u32 frame_event = DPU_ENCODER_FRAME_EVENT_ERROR;

 wb_enc->wb_done_timeout_cnt++;

 if (wb_enc->wb_done_timeout_cnt == 1)
  msm_disp_snapshot_state(phys_enc->parent->dev);

 atomic_add_unless(&phys_enc->pending_kickoff_cnt, -1, 0);

 /* request a ctl reset before the next kickoff */
 phys_enc->enable_state = DPU_ENC_ERR_NEEDS_HW_RESET;

 if (wb_enc->wb_conn)
  drm_writeback_signal_completion(wb_enc->wb_conn, 0);

 dpu_encoder_frame_done_callback(phys_enc->parent, phys_enc, frame_event);
}

/**
 * dpu_encoder_phys_wb_wait_for_commit_done - wait until request is committed
 * @phys_enc: Pointer to physical encoder
 */
static int dpu_encoder_phys_wb_wait_for_commit_done(
  struct dpu_encoder_phys *phys_enc)
{
 int ret;
 struct dpu_encoder_wait_info wait_info;
 struct dpu_encoder_phys_wb *wb_enc = to_dpu_encoder_phys_wb(phys_enc);

 wait_info.wq = &phys_enc->pending_kickoff_wq;
 wait_info.atomic_cnt = &phys_enc->pending_kickoff_cnt;
 wait_info.timeout_ms = KICKOFF_TIMEOUT_MS;

 ret = dpu_encoder_helper_wait_for_irq(phys_enc,
   phys_enc->irq[INTR_IDX_WB_DONE],
   dpu_encoder_phys_wb_done_irq, &wait_info);
 if (ret == -ETIMEDOUT)
  _dpu_encoder_phys_wb_handle_wbdone_timeout(phys_enc);
 else if (!ret)
  wb_enc->wb_done_timeout_cnt = 0;

 return ret;
}

/**
 * dpu_encoder_phys_wb_prepare_for_kickoff - pre-kickoff processing
 * @phys_enc: Pointer to physical encoder
 * Returns: Zero on success
 */
static void dpu_encoder_phys_wb_prepare_for_kickoff(
  struct dpu_encoder_phys *phys_enc)
{
 struct dpu_encoder_phys_wb *wb_enc = to_dpu_encoder_phys_wb(phys_enc);
 struct drm_connector *drm_conn;
 struct drm_connector_state *state;

 DPU_DEBUG("[wb:%d]\n", phys_enc->hw_wb->idx - WB_0);

 if (!wb_enc->wb_conn || !wb_enc->wb_job) {
  DPU_ERROR("invalid wb_conn or wb_job\n");
  return;
 }

 drm_conn = &wb_enc->wb_conn->base;
 state = drm_conn->state;

 if (wb_enc->wb_conn && wb_enc->wb_job)
  drm_writeback_queue_job(wb_enc->wb_conn, state);

 dpu_encoder_phys_wb_setup(phys_enc);

 _dpu_encoder_phys_wb_update_flush(phys_enc);
}

/**
 * dpu_encoder_phys_wb_needs_single_flush - trigger flush processing
 * @phys_enc: Pointer to physical encoder
 */
static bool dpu_encoder_phys_wb_needs_single_flush(struct dpu_encoder_phys *phys_enc)
{
 DPU_DEBUG("[wb:%d]\n", phys_enc->hw_wb->idx - WB_0);
 return false;
}

/**
 * dpu_encoder_phys_wb_handle_post_kickoff - post-kickoff processing
 * @phys_enc: Pointer to physical encoder
 */
static void dpu_encoder_phys_wb_handle_post_kickoff(
  struct dpu_encoder_phys *phys_enc)
{
 DPU_DEBUG("[wb:%d]\n", phys_enc->hw_wb->idx - WB_0);

}

/**
 * dpu_encoder_phys_wb_enable - enable writeback encoder
 * @phys_enc: Pointer to physical encoder
 */
static void dpu_encoder_phys_wb_enable(struct dpu_encoder_phys *phys_enc)
{
 DPU_DEBUG("[wb:%d]\n", phys_enc->hw_wb->idx - WB_0);
 phys_enc->enable_state = DPU_ENC_ENABLED;
}
/**
 * dpu_encoder_phys_wb_disable - disable writeback encoder
 * @phys_enc: Pointer to physical encoder
 */
static void dpu_encoder_phys_wb_disable(struct dpu_encoder_phys *phys_enc)
{
 struct dpu_hw_wb *hw_wb = phys_enc->hw_wb;

 DPU_DEBUG("[wb:%d]\n", hw_wb->idx - WB_0);

 if (phys_enc->enable_state == DPU_ENC_DISABLED) {
  DPU_ERROR("encoder is already disabled\n");
  return;
 }

 /* reset h/w before final flush */
 phys_enc->hw_ctl->ops.clear_pending_flush(phys_enc->hw_ctl);

 /*
 * New CTL reset sequence from 5.0 MDP onwards.
 * If has_3d_merge_reset is not set, legacy reset
 * sequence is executed.
 *
 * Legacy reset sequence has not been implemented yet.
 * Any target earlier than SM8150 will need it and when
 * WB support is added to those targets will need to add
 * the legacy teardown sequence as well.
 */
 if (phys_enc->dpu_kms->catalog->mdss_ver->core_major_ver >= 5)
  dpu_encoder_helper_phys_cleanup(phys_enc);

 phys_enc->enable_state = DPU_ENC_DISABLED;
}

static void dpu_encoder_phys_wb_prepare_wb_job(struct dpu_encoder_phys *phys_enc,
  struct drm_writeback_job *job)
{
 const struct msm_format *format;
 struct dpu_hw_wb_cfg *wb_cfg;
 int ret;
 struct dpu_encoder_phys_wb *wb_enc = to_dpu_encoder_phys_wb(phys_enc);

 if (!job->fb)
  return;

 wb_enc->wb_job = job;
 wb_enc->wb_conn = job->connector;

 wb_cfg = &wb_enc->wb_cfg;

 memset(wb_cfg, 0, sizeof(struct dpu_hw_wb_cfg));

 ret = msm_framebuffer_prepare(job->fb, false);
 if (ret) {
  DPU_ERROR("prep fb failed, %d\n", ret);
  return;
 }

 format = msm_framebuffer_format(job->fb);

 ret = dpu_format_populate_plane_sizes(job->fb, &wb_cfg->dest);
 if (ret) {
  DPU_DEBUG("failed to populate plane sizes%d\n", ret);
  return;
 }

 dpu_format_populate_addrs(job->fb, &wb_cfg->dest);

 wb_cfg->dest.width = job->fb->width;
 wb_cfg->dest.height = job->fb->height;
 wb_cfg->dest.num_planes = format->num_planes;

 if ((format->fetch_type == MDP_PLANE_PLANAR) &&
     (format->element[0] == C1_B_Cb))
  swap(wb_cfg->dest.plane_addr[1], wb_cfg->dest.plane_addr[2]);

 DPU_DEBUG("[fb_offset:%8.8x,%8.8x,%8.8x,%8.8x]\n",
   wb_cfg->dest.plane_addr[0], wb_cfg->dest.plane_addr[1],
   wb_cfg->dest.plane_addr[2], wb_cfg->dest.plane_addr[3]);

 DPU_DEBUG("[fb_stride:%8.8x,%8.8x,%8.8x,%8.8x]\n",
   wb_cfg->dest.plane_pitch[0], wb_cfg->dest.plane_pitch[1],
   wb_cfg->dest.plane_pitch[2], wb_cfg->dest.plane_pitch[3]);
}

static void dpu_encoder_phys_wb_cleanup_wb_job(struct dpu_encoder_phys *phys_enc,
  struct drm_writeback_job *job)
{
 struct dpu_encoder_phys_wb *wb_enc = to_dpu_encoder_phys_wb(phys_enc);

 if (!job->fb)
  return;

 msm_framebuffer_cleanup(job->fb, false);
 wb_enc->wb_job = NULL;
 wb_enc->wb_conn = NULL;
}

static bool dpu_encoder_phys_wb_is_valid_for_commit(struct dpu_encoder_phys *phys_enc)
{
 struct dpu_encoder_phys_wb *wb_enc = to_dpu_encoder_phys_wb(phys_enc);

 if (wb_enc->wb_job)
  return true;
 else
  return false;
}

/**
 * dpu_encoder_phys_wb_init_ops - initialize writeback operations
 * @ops: Pointer to encoder operation table
 */
static void dpu_encoder_phys_wb_init_ops(struct dpu_encoder_phys_ops *ops)
{
 ops->is_master = dpu_encoder_phys_wb_is_master;
 ops->atomic_mode_set = dpu_encoder_phys_wb_atomic_mode_set;
 ops->enable = dpu_encoder_phys_wb_enable;
 ops->disable = dpu_encoder_phys_wb_disable;
 ops->wait_for_commit_done = dpu_encoder_phys_wb_wait_for_commit_done;
 ops->prepare_for_kickoff = dpu_encoder_phys_wb_prepare_for_kickoff;
 ops->handle_post_kickoff = dpu_encoder_phys_wb_handle_post_kickoff;
 ops->needs_single_flush = dpu_encoder_phys_wb_needs_single_flush;
 ops->trigger_start = dpu_encoder_helper_trigger_start;
 ops->prepare_wb_job = dpu_encoder_phys_wb_prepare_wb_job;
 ops->cleanup_wb_job = dpu_encoder_phys_wb_cleanup_wb_job;
 ops->irq_enable = dpu_encoder_phys_wb_irq_enable;
 ops->irq_disable = dpu_encoder_phys_wb_irq_disable;
 ops->is_valid_for_commit = dpu_encoder_phys_wb_is_valid_for_commit;

}

/**
 * dpu_encoder_phys_wb_init - initialize writeback encoder
 * @dev:  Corresponding device for devres management
 * @p: Pointer to init info structure with initialization params
 */
struct dpu_encoder_phys *dpu_encoder_phys_wb_init(struct drm_device *dev,
  struct dpu_enc_phys_init_params *p)
{
 struct dpu_encoder_phys *phys_enc = NULL;
 struct dpu_encoder_phys_wb *wb_enc = NULL;

 DPU_DEBUG("\n");

 if (!p || !p->parent) {
  DPU_ERROR("invalid params\n");
  return ERR_PTR(-EINVAL);
 }

 wb_enc = drmm_kzalloc(dev, sizeof(*wb_enc), GFP_KERNEL);
 if (!wb_enc) {
  DPU_ERROR("failed to allocate wb phys_enc enc\n");
  return ERR_PTR(-ENOMEM);
 }

 phys_enc = &wb_enc->base;

 dpu_encoder_phys_init(phys_enc, p);

 dpu_encoder_phys_wb_init_ops(&phys_enc->ops);
 phys_enc->intf_mode = INTF_MODE_WB_LINE;

 atomic_set(&wb_enc->wbirq_refcount, 0);

 wb_enc->wb_done_timeout_cnt = 0;

 DPU_DEBUG("Created dpu_encoder_phys for wb %d\n", phys_enc->hw_wb->idx);

 return phys_enc;
}