diff options
Diffstat (limited to 'drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c')
-rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c | 803 |
1 files changed, 803 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c new file mode 100644 index 000000000..ae28b2b93 --- /dev/null +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c @@ -0,0 +1,803 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2015-2018, 2020-2021 The Linux Foundation. All rights reserved. + */ + +#define pr_fmt(fmt) "[drm:%s:%d] " fmt, __func__, __LINE__ +#include <linux/delay.h> +#include "dpu_encoder_phys.h" +#include "dpu_hw_interrupts.h" +#include "dpu_hw_pingpong.h" +#include "dpu_core_irq.h" +#include "dpu_formats.h" +#include "dpu_trace.h" +#include "disp/msm_disp_snapshot.h" + +#define DPU_DEBUG_CMDENC(e, fmt, ...) DPU_DEBUG("enc%d intf%d " fmt, \ + (e) && (e)->base.parent ? \ + (e)->base.parent->base.id : -1, \ + (e) ? (e)->base.intf_idx - INTF_0 : -1, ##__VA_ARGS__) + +#define DPU_ERROR_CMDENC(e, fmt, ...) DPU_ERROR("enc%d intf%d " fmt, \ + (e) && (e)->base.parent ? \ + (e)->base.parent->base.id : -1, \ + (e) ? (e)->base.intf_idx - INTF_0 : -1, ##__VA_ARGS__) + +#define to_dpu_encoder_phys_cmd(x) \ + container_of(x, struct dpu_encoder_phys_cmd, base) + +#define PP_TIMEOUT_MAX_TRIALS 10 + +/* + * Tearcheck sync start and continue thresholds are empirically found + * based on common panels In the future, may want to allow panels to override + * these default values + */ +#define DEFAULT_TEARCHECK_SYNC_THRESH_START 4 +#define DEFAULT_TEARCHECK_SYNC_THRESH_CONTINUE 4 + +#define DPU_ENC_WR_PTR_START_TIMEOUT_US 20000 + +#define DPU_ENC_MAX_POLL_TIMEOUT_US 2000 + +static bool dpu_encoder_phys_cmd_is_master(struct dpu_encoder_phys *phys_enc) +{ + return (phys_enc->split_role != ENC_ROLE_SLAVE); +} + +static void _dpu_encoder_phys_cmd_update_intf_cfg( + struct dpu_encoder_phys *phys_enc) +{ + struct dpu_encoder_phys_cmd *cmd_enc = + to_dpu_encoder_phys_cmd(phys_enc); + struct dpu_hw_ctl *ctl; + struct dpu_hw_intf_cfg intf_cfg = { 0 }; + + ctl = phys_enc->hw_ctl; + if (!ctl->ops.setup_intf_cfg) + return; + + intf_cfg.intf = phys_enc->intf_idx; + intf_cfg.intf_mode_sel = DPU_CTL_MODE_SEL_CMD; + intf_cfg.stream_sel = cmd_enc->stream_sel; + intf_cfg.mode_3d = dpu_encoder_helper_get_3d_blend_mode(phys_enc); + ctl->ops.setup_intf_cfg(ctl, &intf_cfg); + + /* setup which pp blk will connect to this intf */ + if (test_bit(DPU_CTL_ACTIVE_CFG, &ctl->caps->features) && phys_enc->hw_intf->ops.bind_pingpong_blk) + phys_enc->hw_intf->ops.bind_pingpong_blk( + phys_enc->hw_intf, + true, + phys_enc->hw_pp->idx); +} + +static void dpu_encoder_phys_cmd_pp_tx_done_irq(void *arg, int irq_idx) +{ + struct dpu_encoder_phys *phys_enc = arg; + unsigned long lock_flags; + int new_cnt; + u32 event = DPU_ENCODER_FRAME_EVENT_DONE; + + if (!phys_enc->hw_pp) + return; + + DPU_ATRACE_BEGIN("pp_done_irq"); + /* notify all synchronous clients first, then asynchronous clients */ + if (phys_enc->parent_ops->handle_frame_done) + phys_enc->parent_ops->handle_frame_done(phys_enc->parent, + phys_enc, event); + + spin_lock_irqsave(phys_enc->enc_spinlock, lock_flags); + new_cnt = atomic_add_unless(&phys_enc->pending_kickoff_cnt, -1, 0); + spin_unlock_irqrestore(phys_enc->enc_spinlock, lock_flags); + + trace_dpu_enc_phys_cmd_pp_tx_done(DRMID(phys_enc->parent), + phys_enc->hw_pp->idx - PINGPONG_0, + new_cnt, event); + + /* Signal any waiting atomic commit thread */ + wake_up_all(&phys_enc->pending_kickoff_wq); + DPU_ATRACE_END("pp_done_irq"); +} + +static void dpu_encoder_phys_cmd_pp_rd_ptr_irq(void *arg, int irq_idx) +{ + struct dpu_encoder_phys *phys_enc = arg; + struct dpu_encoder_phys_cmd *cmd_enc; + + if (!phys_enc->hw_pp) + return; + + DPU_ATRACE_BEGIN("rd_ptr_irq"); + cmd_enc = to_dpu_encoder_phys_cmd(phys_enc); + + if (phys_enc->parent_ops->handle_vblank_virt) + phys_enc->parent_ops->handle_vblank_virt(phys_enc->parent, + phys_enc); + + atomic_add_unless(&cmd_enc->pending_vblank_cnt, -1, 0); + wake_up_all(&cmd_enc->pending_vblank_wq); + DPU_ATRACE_END("rd_ptr_irq"); +} + +static void dpu_encoder_phys_cmd_ctl_start_irq(void *arg, int irq_idx) +{ + struct dpu_encoder_phys *phys_enc = arg; + + DPU_ATRACE_BEGIN("ctl_start_irq"); + + atomic_add_unless(&phys_enc->pending_ctlstart_cnt, -1, 0); + + /* Signal any waiting ctl start interrupt */ + wake_up_all(&phys_enc->pending_kickoff_wq); + DPU_ATRACE_END("ctl_start_irq"); +} + +static void dpu_encoder_phys_cmd_underrun_irq(void *arg, int irq_idx) +{ + struct dpu_encoder_phys *phys_enc = arg; + + if (phys_enc->parent_ops->handle_underrun_virt) + phys_enc->parent_ops->handle_underrun_virt(phys_enc->parent, + phys_enc); +} + +static void dpu_encoder_phys_cmd_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_CTL_START] = phys_enc->hw_ctl->caps->intr_start; + + phys_enc->irq[INTR_IDX_PINGPONG] = phys_enc->hw_pp->caps->intr_done; + + phys_enc->irq[INTR_IDX_RDPTR] = phys_enc->hw_pp->caps->intr_rdptr; + + phys_enc->irq[INTR_IDX_UNDERRUN] = phys_enc->hw_intf->cap->intr_underrun; +} + +static int _dpu_encoder_phys_cmd_handle_ppdone_timeout( + struct dpu_encoder_phys *phys_enc) +{ + struct dpu_encoder_phys_cmd *cmd_enc = + to_dpu_encoder_phys_cmd(phys_enc); + u32 frame_event = DPU_ENCODER_FRAME_EVENT_ERROR; + bool do_log = false; + struct drm_encoder *drm_enc; + + if (!phys_enc->hw_pp) + return -EINVAL; + + drm_enc = phys_enc->parent; + + cmd_enc->pp_timeout_report_cnt++; + if (cmd_enc->pp_timeout_report_cnt == PP_TIMEOUT_MAX_TRIALS) { + frame_event |= DPU_ENCODER_FRAME_EVENT_PANEL_DEAD; + do_log = true; + } else if (cmd_enc->pp_timeout_report_cnt == 1) { + do_log = true; + } + + trace_dpu_enc_phys_cmd_pdone_timeout(DRMID(drm_enc), + phys_enc->hw_pp->idx - PINGPONG_0, + cmd_enc->pp_timeout_report_cnt, + atomic_read(&phys_enc->pending_kickoff_cnt), + frame_event); + + /* to avoid flooding, only log first time, and "dead" time */ + if (do_log) { + DRM_ERROR("id:%d pp:%d kickoff timeout %d cnt %d koff_cnt %d\n", + DRMID(drm_enc), + phys_enc->hw_pp->idx - PINGPONG_0, + phys_enc->hw_ctl->idx - CTL_0, + cmd_enc->pp_timeout_report_cnt, + atomic_read(&phys_enc->pending_kickoff_cnt)); + msm_disp_snapshot_state(drm_enc->dev); + dpu_core_irq_unregister_callback(phys_enc->dpu_kms, + phys_enc->irq[INTR_IDX_RDPTR]); + } + + 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 (phys_enc->parent_ops->handle_frame_done) + phys_enc->parent_ops->handle_frame_done( + drm_enc, phys_enc, frame_event); + + return -ETIMEDOUT; +} + +static int _dpu_encoder_phys_cmd_wait_for_idle( + struct dpu_encoder_phys *phys_enc) +{ + struct dpu_encoder_phys_cmd *cmd_enc = + to_dpu_encoder_phys_cmd(phys_enc); + struct dpu_encoder_wait_info wait_info; + int ret; + + 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_PINGPONG], + dpu_encoder_phys_cmd_pp_tx_done_irq, + &wait_info); + if (ret == -ETIMEDOUT) + _dpu_encoder_phys_cmd_handle_ppdone_timeout(phys_enc); + else if (!ret) + cmd_enc->pp_timeout_report_cnt = 0; + + return ret; +} + +static int dpu_encoder_phys_cmd_control_vblank_irq( + struct dpu_encoder_phys *phys_enc, + bool enable) +{ + int ret = 0; + int refcount; + + if (!phys_enc->hw_pp) { + DPU_ERROR("invalid encoder\n"); + return -EINVAL; + } + + refcount = atomic_read(&phys_enc->vblank_refcount); + + /* Slave encoders don't report vblank */ + if (!dpu_encoder_phys_cmd_is_master(phys_enc)) + goto end; + + /* protect against negative */ + if (!enable && refcount == 0) { + ret = -EINVAL; + goto end; + } + + DRM_DEBUG_KMS("id:%u pp:%d enable=%s/%d\n", DRMID(phys_enc->parent), + phys_enc->hw_pp->idx - PINGPONG_0, + enable ? "true" : "false", refcount); + + if (enable && atomic_inc_return(&phys_enc->vblank_refcount) == 1) + ret = dpu_core_irq_register_callback(phys_enc->dpu_kms, + phys_enc->irq[INTR_IDX_RDPTR], + dpu_encoder_phys_cmd_pp_rd_ptr_irq, + phys_enc); + else if (!enable && atomic_dec_return(&phys_enc->vblank_refcount) == 0) + ret = dpu_core_irq_unregister_callback(phys_enc->dpu_kms, + phys_enc->irq[INTR_IDX_RDPTR]); + +end: + if (ret) { + DRM_ERROR("vblank irq err id:%u pp:%d ret:%d, enable %s/%d\n", + DRMID(phys_enc->parent), + phys_enc->hw_pp->idx - PINGPONG_0, ret, + enable ? "true" : "false", refcount); + } + + return ret; +} + +static void dpu_encoder_phys_cmd_irq_control(struct dpu_encoder_phys *phys_enc, + bool enable) +{ + trace_dpu_enc_phys_cmd_irq_ctrl(DRMID(phys_enc->parent), + phys_enc->hw_pp->idx - PINGPONG_0, + enable, atomic_read(&phys_enc->vblank_refcount)); + + if (enable) { + dpu_core_irq_register_callback(phys_enc->dpu_kms, + phys_enc->irq[INTR_IDX_PINGPONG], + dpu_encoder_phys_cmd_pp_tx_done_irq, + phys_enc); + dpu_core_irq_register_callback(phys_enc->dpu_kms, + phys_enc->irq[INTR_IDX_UNDERRUN], + dpu_encoder_phys_cmd_underrun_irq, + phys_enc); + dpu_encoder_phys_cmd_control_vblank_irq(phys_enc, true); + + if (dpu_encoder_phys_cmd_is_master(phys_enc)) + dpu_core_irq_register_callback(phys_enc->dpu_kms, + phys_enc->irq[INTR_IDX_CTL_START], + dpu_encoder_phys_cmd_ctl_start_irq, + phys_enc); + } else { + if (dpu_encoder_phys_cmd_is_master(phys_enc)) + dpu_core_irq_unregister_callback(phys_enc->dpu_kms, + phys_enc->irq[INTR_IDX_CTL_START]); + + dpu_core_irq_unregister_callback(phys_enc->dpu_kms, + phys_enc->irq[INTR_IDX_UNDERRUN]); + dpu_encoder_phys_cmd_control_vblank_irq(phys_enc, false); + dpu_core_irq_unregister_callback(phys_enc->dpu_kms, + phys_enc->irq[INTR_IDX_PINGPONG]); + } +} + +static void dpu_encoder_phys_cmd_tearcheck_config( + struct dpu_encoder_phys *phys_enc) +{ + struct dpu_encoder_phys_cmd *cmd_enc = + to_dpu_encoder_phys_cmd(phys_enc); + struct dpu_hw_tear_check tc_cfg = { 0 }; + struct drm_display_mode *mode; + bool tc_enable = true; + u32 vsync_hz; + struct dpu_kms *dpu_kms; + + if (!phys_enc->hw_pp) { + DPU_ERROR("invalid encoder\n"); + return; + } + mode = &phys_enc->cached_mode; + + DPU_DEBUG_CMDENC(cmd_enc, "pp %d\n", phys_enc->hw_pp->idx - PINGPONG_0); + + if (!phys_enc->hw_pp->ops.setup_tearcheck || + !phys_enc->hw_pp->ops.enable_tearcheck) { + DPU_DEBUG_CMDENC(cmd_enc, "tearcheck not supported\n"); + return; + } + + dpu_kms = phys_enc->dpu_kms; + + /* + * TE default: dsi byte clock calculated base on 70 fps; + * around 14 ms to complete a kickoff cycle if te disabled; + * vclk_line base on 60 fps; write is faster than read; + * init == start == rdptr; + * + * vsync_count is ratio of MDP VSYNC clock frequency to LCD panel + * frequency divided by the no. of rows (lines) in the LCDpanel. + */ + vsync_hz = dpu_kms_get_clk_rate(dpu_kms, "vsync"); + if (vsync_hz <= 0) { + DPU_DEBUG_CMDENC(cmd_enc, "invalid - vsync_hz %u\n", + vsync_hz); + return; + } + + tc_cfg.vsync_count = vsync_hz / + (mode->vtotal * drm_mode_vrefresh(mode)); + + /* + * Set the sync_cfg_height to twice vtotal so that if we lose a + * TE event coming from the display TE pin we won't stall immediately + */ + tc_cfg.hw_vsync_mode = 1; + tc_cfg.sync_cfg_height = mode->vtotal * 2; + tc_cfg.vsync_init_val = mode->vdisplay; + tc_cfg.sync_threshold_start = DEFAULT_TEARCHECK_SYNC_THRESH_START; + tc_cfg.sync_threshold_continue = DEFAULT_TEARCHECK_SYNC_THRESH_CONTINUE; + tc_cfg.start_pos = mode->vdisplay; + tc_cfg.rd_ptr_irq = mode->vdisplay + 1; + + DPU_DEBUG_CMDENC(cmd_enc, + "tc %d vsync_clk_speed_hz %u vtotal %u vrefresh %u\n", + phys_enc->hw_pp->idx - PINGPONG_0, vsync_hz, + mode->vtotal, drm_mode_vrefresh(mode)); + DPU_DEBUG_CMDENC(cmd_enc, + "tc %d enable %u start_pos %u rd_ptr_irq %u\n", + phys_enc->hw_pp->idx - PINGPONG_0, tc_enable, tc_cfg.start_pos, + tc_cfg.rd_ptr_irq); + DPU_DEBUG_CMDENC(cmd_enc, + "tc %d hw_vsync_mode %u vsync_count %u vsync_init_val %u\n", + phys_enc->hw_pp->idx - PINGPONG_0, tc_cfg.hw_vsync_mode, + tc_cfg.vsync_count, tc_cfg.vsync_init_val); + DPU_DEBUG_CMDENC(cmd_enc, + "tc %d cfgheight %u thresh_start %u thresh_cont %u\n", + phys_enc->hw_pp->idx - PINGPONG_0, tc_cfg.sync_cfg_height, + tc_cfg.sync_threshold_start, tc_cfg.sync_threshold_continue); + + phys_enc->hw_pp->ops.setup_tearcheck(phys_enc->hw_pp, &tc_cfg); + phys_enc->hw_pp->ops.enable_tearcheck(phys_enc->hw_pp, tc_enable); +} + +static void _dpu_encoder_phys_cmd_pingpong_config( + struct dpu_encoder_phys *phys_enc) +{ + struct dpu_encoder_phys_cmd *cmd_enc = + to_dpu_encoder_phys_cmd(phys_enc); + + if (!phys_enc->hw_pp || !phys_enc->hw_ctl->ops.setup_intf_cfg) { + DPU_ERROR("invalid arg(s), enc %d\n", phys_enc != NULL); + return; + } + + DPU_DEBUG_CMDENC(cmd_enc, "pp %d, enabling mode:\n", + phys_enc->hw_pp->idx - PINGPONG_0); + drm_mode_debug_printmodeline(&phys_enc->cached_mode); + + _dpu_encoder_phys_cmd_update_intf_cfg(phys_enc); + dpu_encoder_phys_cmd_tearcheck_config(phys_enc); +} + +static bool dpu_encoder_phys_cmd_needs_single_flush( + struct dpu_encoder_phys *phys_enc) +{ + /** + * we do separate flush for each CTL and let + * CTL_START synchronize them + */ + return false; +} + +static void dpu_encoder_phys_cmd_enable_helper( + struct dpu_encoder_phys *phys_enc) +{ + struct dpu_hw_ctl *ctl; + + if (!phys_enc->hw_pp) { + DPU_ERROR("invalid arg(s), encoder %d\n", phys_enc != NULL); + return; + } + + dpu_encoder_helper_split_config(phys_enc, phys_enc->intf_idx); + + _dpu_encoder_phys_cmd_pingpong_config(phys_enc); + + if (!dpu_encoder_phys_cmd_is_master(phys_enc)) + return; + + ctl = phys_enc->hw_ctl; + ctl->ops.update_pending_flush_intf(ctl, phys_enc->intf_idx); +} + +static void dpu_encoder_phys_cmd_enable(struct dpu_encoder_phys *phys_enc) +{ + struct dpu_encoder_phys_cmd *cmd_enc = + to_dpu_encoder_phys_cmd(phys_enc); + + if (!phys_enc->hw_pp) { + DPU_ERROR("invalid phys encoder\n"); + return; + } + + DPU_DEBUG_CMDENC(cmd_enc, "pp %d\n", phys_enc->hw_pp->idx - PINGPONG_0); + + if (phys_enc->enable_state == DPU_ENC_ENABLED) { + DPU_ERROR("already enabled\n"); + return; + } + + dpu_encoder_phys_cmd_enable_helper(phys_enc); + phys_enc->enable_state = DPU_ENC_ENABLED; +} + +static void _dpu_encoder_phys_cmd_connect_te( + struct dpu_encoder_phys *phys_enc, bool enable) +{ + if (!phys_enc->hw_pp || !phys_enc->hw_pp->ops.connect_external_te) + return; + + trace_dpu_enc_phys_cmd_connect_te(DRMID(phys_enc->parent), enable); + phys_enc->hw_pp->ops.connect_external_te(phys_enc->hw_pp, enable); +} + +static void dpu_encoder_phys_cmd_prepare_idle_pc( + struct dpu_encoder_phys *phys_enc) +{ + _dpu_encoder_phys_cmd_connect_te(phys_enc, false); +} + +static int dpu_encoder_phys_cmd_get_line_count( + struct dpu_encoder_phys *phys_enc) +{ + struct dpu_hw_pingpong *hw_pp; + + if (!phys_enc->hw_pp) + return -EINVAL; + + if (!dpu_encoder_phys_cmd_is_master(phys_enc)) + return -EINVAL; + + hw_pp = phys_enc->hw_pp; + if (!hw_pp->ops.get_line_count) + return -EINVAL; + + return hw_pp->ops.get_line_count(hw_pp); +} + +static void dpu_encoder_phys_cmd_disable(struct dpu_encoder_phys *phys_enc) +{ + struct dpu_encoder_phys_cmd *cmd_enc = + to_dpu_encoder_phys_cmd(phys_enc); + struct dpu_hw_ctl *ctl; + + if (!phys_enc->hw_pp) { + DPU_ERROR("invalid encoder\n"); + return; + } + DRM_DEBUG_KMS("id:%u pp:%d state:%d\n", DRMID(phys_enc->parent), + phys_enc->hw_pp->idx - PINGPONG_0, + phys_enc->enable_state); + + if (phys_enc->enable_state == DPU_ENC_DISABLED) { + DPU_ERROR_CMDENC(cmd_enc, "already disabled\n"); + return; + } + + if (phys_enc->hw_pp->ops.enable_tearcheck) + phys_enc->hw_pp->ops.enable_tearcheck(phys_enc->hw_pp, false); + + if (phys_enc->hw_intf->ops.bind_pingpong_blk) { + phys_enc->hw_intf->ops.bind_pingpong_blk( + phys_enc->hw_intf, + false, + phys_enc->hw_pp->idx); + + ctl = phys_enc->hw_ctl; + ctl->ops.update_pending_flush_intf(ctl, phys_enc->intf_idx); + } + + phys_enc->enable_state = DPU_ENC_DISABLED; +} + +static void dpu_encoder_phys_cmd_destroy(struct dpu_encoder_phys *phys_enc) +{ + struct dpu_encoder_phys_cmd *cmd_enc = + to_dpu_encoder_phys_cmd(phys_enc); + + kfree(cmd_enc); +} + +static void dpu_encoder_phys_cmd_prepare_for_kickoff( + struct dpu_encoder_phys *phys_enc) +{ + struct dpu_encoder_phys_cmd *cmd_enc = + to_dpu_encoder_phys_cmd(phys_enc); + int ret; + + if (!phys_enc->hw_pp) { + DPU_ERROR("invalid encoder\n"); + return; + } + DRM_DEBUG_KMS("id:%u pp:%d pending_cnt:%d\n", DRMID(phys_enc->parent), + phys_enc->hw_pp->idx - PINGPONG_0, + atomic_read(&phys_enc->pending_kickoff_cnt)); + + /* + * Mark kickoff request as outstanding. If there are more than one, + * outstanding, then we have to wait for the previous one to complete + */ + ret = _dpu_encoder_phys_cmd_wait_for_idle(phys_enc); + if (ret) { + /* force pending_kickoff_cnt 0 to discard failed kickoff */ + atomic_set(&phys_enc->pending_kickoff_cnt, 0); + DRM_ERROR("failed wait_for_idle: id:%u ret:%d pp:%d\n", + DRMID(phys_enc->parent), ret, + phys_enc->hw_pp->idx - PINGPONG_0); + } + + DPU_DEBUG_CMDENC(cmd_enc, "pp:%d pending_cnt %d\n", + phys_enc->hw_pp->idx - PINGPONG_0, + atomic_read(&phys_enc->pending_kickoff_cnt)); +} + +static bool dpu_encoder_phys_cmd_is_ongoing_pptx( + struct dpu_encoder_phys *phys_enc) +{ + struct dpu_hw_pp_vsync_info info; + + if (!phys_enc) + return false; + + phys_enc->hw_pp->ops.get_vsync_info(phys_enc->hw_pp, &info); + if (info.wr_ptr_line_count > 0 && + info.wr_ptr_line_count < phys_enc->cached_mode.vdisplay) + return true; + + return false; +} + +static void dpu_encoder_phys_cmd_prepare_commit( + struct dpu_encoder_phys *phys_enc) +{ + struct dpu_encoder_phys_cmd *cmd_enc = + to_dpu_encoder_phys_cmd(phys_enc); + int trial = 0; + + if (!phys_enc) + return; + if (!phys_enc->hw_pp) + return; + if (!dpu_encoder_phys_cmd_is_master(phys_enc)) + return; + + /* If autorefresh is already disabled, we have nothing to do */ + if (!phys_enc->hw_pp->ops.get_autorefresh(phys_enc->hw_pp, NULL)) + return; + + /* + * If autorefresh is enabled, disable it and make sure it is safe to + * proceed with current frame commit/push. Sequence fallowed is, + * 1. Disable TE + * 2. Disable autorefresh config + * 4. Poll for frame transfer ongoing to be false + * 5. Enable TE back + */ + _dpu_encoder_phys_cmd_connect_te(phys_enc, false); + phys_enc->hw_pp->ops.setup_autorefresh(phys_enc->hw_pp, 0, false); + + do { + udelay(DPU_ENC_MAX_POLL_TIMEOUT_US); + if ((trial * DPU_ENC_MAX_POLL_TIMEOUT_US) + > (KICKOFF_TIMEOUT_MS * USEC_PER_MSEC)) { + DPU_ERROR_CMDENC(cmd_enc, + "disable autorefresh failed\n"); + break; + } + + trial++; + } while (dpu_encoder_phys_cmd_is_ongoing_pptx(phys_enc)); + + _dpu_encoder_phys_cmd_connect_te(phys_enc, true); + + DPU_DEBUG_CMDENC(to_dpu_encoder_phys_cmd(phys_enc), + "disabled autorefresh\n"); +} + +static int _dpu_encoder_phys_cmd_wait_for_ctl_start( + struct dpu_encoder_phys *phys_enc) +{ + struct dpu_encoder_phys_cmd *cmd_enc = + to_dpu_encoder_phys_cmd(phys_enc); + struct dpu_encoder_wait_info wait_info; + int ret; + + wait_info.wq = &phys_enc->pending_kickoff_wq; + wait_info.atomic_cnt = &phys_enc->pending_ctlstart_cnt; + wait_info.timeout_ms = KICKOFF_TIMEOUT_MS; + + ret = dpu_encoder_helper_wait_for_irq(phys_enc, + phys_enc->irq[INTR_IDX_CTL_START], + dpu_encoder_phys_cmd_ctl_start_irq, + &wait_info); + if (ret == -ETIMEDOUT) { + DPU_ERROR_CMDENC(cmd_enc, "ctl start interrupt wait failed\n"); + ret = -EINVAL; + } else if (!ret) + ret = 0; + + return ret; +} + +static int dpu_encoder_phys_cmd_wait_for_tx_complete( + struct dpu_encoder_phys *phys_enc) +{ + int rc; + + rc = _dpu_encoder_phys_cmd_wait_for_idle(phys_enc); + if (rc) { + DRM_ERROR("failed wait_for_idle: id:%u ret:%d intf:%d\n", + DRMID(phys_enc->parent), rc, + phys_enc->intf_idx - INTF_0); + } + + return rc; +} + +static int dpu_encoder_phys_cmd_wait_for_commit_done( + struct dpu_encoder_phys *phys_enc) +{ + /* only required for master controller */ + if (!dpu_encoder_phys_cmd_is_master(phys_enc)) + return 0; + + if (phys_enc->hw_ctl->ops.is_started(phys_enc->hw_ctl)) + return dpu_encoder_phys_cmd_wait_for_tx_complete(phys_enc); + + return _dpu_encoder_phys_cmd_wait_for_ctl_start(phys_enc); +} + +static int dpu_encoder_phys_cmd_wait_for_vblank( + struct dpu_encoder_phys *phys_enc) +{ + int rc = 0; + struct dpu_encoder_phys_cmd *cmd_enc; + struct dpu_encoder_wait_info wait_info; + + cmd_enc = to_dpu_encoder_phys_cmd(phys_enc); + + /* only required for master controller */ + if (!dpu_encoder_phys_cmd_is_master(phys_enc)) + return rc; + + wait_info.wq = &cmd_enc->pending_vblank_wq; + wait_info.atomic_cnt = &cmd_enc->pending_vblank_cnt; + wait_info.timeout_ms = KICKOFF_TIMEOUT_MS; + + atomic_inc(&cmd_enc->pending_vblank_cnt); + + rc = dpu_encoder_helper_wait_for_irq(phys_enc, + phys_enc->irq[INTR_IDX_RDPTR], + dpu_encoder_phys_cmd_pp_rd_ptr_irq, + &wait_info); + + return rc; +} + +static void dpu_encoder_phys_cmd_handle_post_kickoff( + struct dpu_encoder_phys *phys_enc) +{ + /** + * re-enable external TE, either for the first time after enabling + * or if disabled for Autorefresh + */ + _dpu_encoder_phys_cmd_connect_te(phys_enc, true); +} + +static void dpu_encoder_phys_cmd_trigger_start( + struct dpu_encoder_phys *phys_enc) +{ + dpu_encoder_helper_trigger_start(phys_enc); +} + +static void dpu_encoder_phys_cmd_init_ops( + struct dpu_encoder_phys_ops *ops) +{ + ops->prepare_commit = dpu_encoder_phys_cmd_prepare_commit; + ops->is_master = dpu_encoder_phys_cmd_is_master; + ops->atomic_mode_set = dpu_encoder_phys_cmd_atomic_mode_set; + ops->enable = dpu_encoder_phys_cmd_enable; + ops->disable = dpu_encoder_phys_cmd_disable; + ops->destroy = dpu_encoder_phys_cmd_destroy; + ops->control_vblank_irq = dpu_encoder_phys_cmd_control_vblank_irq; + ops->wait_for_commit_done = dpu_encoder_phys_cmd_wait_for_commit_done; + ops->prepare_for_kickoff = dpu_encoder_phys_cmd_prepare_for_kickoff; + ops->wait_for_tx_complete = dpu_encoder_phys_cmd_wait_for_tx_complete; + ops->wait_for_vblank = dpu_encoder_phys_cmd_wait_for_vblank; + ops->trigger_start = dpu_encoder_phys_cmd_trigger_start; + ops->needs_single_flush = dpu_encoder_phys_cmd_needs_single_flush; + ops->irq_control = dpu_encoder_phys_cmd_irq_control; + ops->restore = dpu_encoder_phys_cmd_enable_helper; + ops->prepare_idle_pc = dpu_encoder_phys_cmd_prepare_idle_pc; + ops->handle_post_kickoff = dpu_encoder_phys_cmd_handle_post_kickoff; + ops->get_line_count = dpu_encoder_phys_cmd_get_line_count; +} + +struct dpu_encoder_phys *dpu_encoder_phys_cmd_init( + struct dpu_enc_phys_init_params *p) +{ + struct dpu_encoder_phys *phys_enc = NULL; + struct dpu_encoder_phys_cmd *cmd_enc = NULL; + int i, ret = 0; + + DPU_DEBUG("intf %d\n", p->intf_idx - INTF_0); + + cmd_enc = kzalloc(sizeof(*cmd_enc), GFP_KERNEL); + if (!cmd_enc) { + ret = -ENOMEM; + DPU_ERROR("failed to allocate\n"); + return ERR_PTR(ret); + } + phys_enc = &cmd_enc->base; + phys_enc->hw_mdptop = p->dpu_kms->hw_mdp; + phys_enc->intf_idx = p->intf_idx; + + dpu_encoder_phys_cmd_init_ops(&phys_enc->ops); + phys_enc->parent = p->parent; + phys_enc->parent_ops = p->parent_ops; + phys_enc->dpu_kms = p->dpu_kms; + phys_enc->split_role = p->split_role; + phys_enc->intf_mode = INTF_MODE_CMD; + phys_enc->enc_spinlock = p->enc_spinlock; + cmd_enc->stream_sel = 0; + phys_enc->enable_state = DPU_ENC_DISABLED; + for (i = 0; i < ARRAY_SIZE(phys_enc->irq); i++) + phys_enc->irq[i] = -EINVAL; + + atomic_set(&phys_enc->vblank_refcount, 0); + atomic_set(&phys_enc->pending_kickoff_cnt, 0); + atomic_set(&phys_enc->pending_ctlstart_cnt, 0); + atomic_set(&cmd_enc->pending_vblank_cnt, 0); + init_waitqueue_head(&phys_enc->pending_kickoff_wq); + init_waitqueue_head(&cmd_enc->pending_vblank_wq); + + DPU_DEBUG_CMDENC(cmd_enc, "created\n"); + + return phys_enc; +} |