1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (c) 2015-2018, The Linux Foundation. All rights reserved. 4 * Copyright (C) 2013 Red Hat 5 * Author: Rob Clark <robdclark@gmail.com> 6 */ 7 8 #ifndef __DPU_ENCODER_H__ 9 #define __DPU_ENCODER_H__ 10 11 #include <drm/drm_crtc.h> 12 #include "dpu_hw_mdss.h" 13 14 #define DPU_ENCODER_FRAME_EVENT_DONE BIT(0) 15 #define DPU_ENCODER_FRAME_EVENT_ERROR BIT(1) 16 #define DPU_ENCODER_FRAME_EVENT_PANEL_DEAD BIT(2) 17 #define DPU_ENCODER_FRAME_EVENT_IDLE BIT(3) 18 19 #define IDLE_TIMEOUT (66 - 16/2) 20 21 /** 22 * struct msm_display_info - defines display properties 23 * @intf_type: DRM_MODE_ENCODER_ type 24 * @capabilities: Bitmask of display flags 25 * @num_of_h_tiles: Number of horizontal tiles in case of split interface 26 * @h_tile_instance: Controller instance used per tile. Number of elements is 27 * based on num_of_h_tiles 28 * @is_te_using_watchdog_timer: Boolean to indicate watchdog TE is 29 * used instead of panel TE in cmd mode panels 30 */ 31 struct msm_display_info { 32 int intf_type; 33 uint32_t capabilities; 34 uint32_t num_of_h_tiles; 35 uint32_t h_tile_instance[MAX_H_TILES_PER_DISPLAY]; 36 bool is_te_using_watchdog_timer; 37 }; 38 39 /** 40 * dpu_encoder_assign_crtc - Link the encoder to the crtc it's assigned to 41 * @encoder: encoder pointer 42 * @crtc: crtc pointer 43 */ 44 void dpu_encoder_assign_crtc(struct drm_encoder *encoder, 45 struct drm_crtc *crtc); 46 47 /** 48 * dpu_encoder_toggle_vblank_for_crtc - Toggles vblank interrupts on or off if 49 * the encoder is assigned to the given crtc 50 * @encoder: encoder pointer 51 * @crtc: crtc pointer 52 * @enable: true if vblank should be enabled 53 */ 54 void dpu_encoder_toggle_vblank_for_crtc(struct drm_encoder *encoder, 55 struct drm_crtc *crtc, bool enable); 56 57 /** 58 * dpu_encoder_register_frame_event_callback - provide callback to encoder that 59 * will be called after the request is complete, or other events. 60 * @encoder: encoder pointer 61 * @cb: callback pointer, provide NULL to deregister 62 * @data: user data provided to callback 63 */ 64 void dpu_encoder_register_frame_event_callback(struct drm_encoder *encoder, 65 void (*cb)(void *, u32), void *data); 66 67 /** 68 * dpu_encoder_prepare_for_kickoff - schedule double buffer flip of the ctl 69 * path (i.e. ctl flush and start) at next appropriate time. 70 * Immediately: if no previous commit is outstanding. 71 * Delayed: Block until next trigger can be issued. 72 * @encoder: encoder pointer 73 */ 74 void dpu_encoder_prepare_for_kickoff(struct drm_encoder *encoder); 75 76 /** 77 * dpu_encoder_trigger_kickoff_pending - Clear the flush bits from previous 78 * kickoff and trigger the ctl prepare progress for command mode display. 79 * @encoder: encoder pointer 80 */ 81 void dpu_encoder_trigger_kickoff_pending(struct drm_encoder *encoder); 82 83 /** 84 * dpu_encoder_kickoff - trigger a double buffer flip of the ctl path 85 * (i.e. ctl flush and start) immediately. 86 * @encoder: encoder pointer 87 */ 88 void dpu_encoder_kickoff(struct drm_encoder *encoder); 89 90 /** 91 * dpu_encoder_wakeup_time - get the time of the next vsync 92 */ 93 int dpu_encoder_vsync_time(struct drm_encoder *drm_enc, ktime_t *wakeup_time); 94 95 /** 96 * dpu_encoder_wait_for_event - Waits for encoder events 97 * @encoder: encoder pointer 98 * @event: event to wait for 99 * MSM_ENC_COMMIT_DONE - Wait for hardware to have flushed the current pending 100 * frames to hardware at a vblank or ctl_start 101 * Encoders will map this differently depending on the 102 * panel type. 103 * vid mode -> vsync_irq 104 * cmd mode -> ctl_start 105 * MSM_ENC_TX_COMPLETE - Wait for the hardware to transfer all the pixels to 106 * the panel. Encoders will map this differently 107 * depending on the panel type. 108 * vid mode -> vsync_irq 109 * cmd mode -> pp_done 110 * Returns: 0 on success, -EWOULDBLOCK if already signaled, error otherwise 111 */ 112 int dpu_encoder_wait_for_event(struct drm_encoder *drm_encoder, 113 enum msm_event_wait event); 114 115 /* 116 * dpu_encoder_get_intf_mode - get interface mode of the given encoder 117 * @encoder: Pointer to drm encoder object 118 */ 119 enum dpu_intf_mode dpu_encoder_get_intf_mode(struct drm_encoder *encoder); 120 121 /** 122 * dpu_encoder_virt_runtime_resume - pm runtime resume the encoder configs 123 * @encoder: encoder pointer 124 */ 125 void dpu_encoder_virt_runtime_resume(struct drm_encoder *encoder); 126 127 /** 128 * dpu_encoder_init - initialize virtual encoder object 129 * @dev: Pointer to drm device structure 130 * @disp_info: Pointer to display information structure 131 * Returns: Pointer to newly created drm encoder 132 */ 133 struct drm_encoder *dpu_encoder_init( 134 struct drm_device *dev, 135 int drm_enc_mode); 136 137 /** 138 * dpu_encoder_setup - setup dpu_encoder for the display probed 139 * @dev: Pointer to drm device structure 140 * @enc: Pointer to the drm_encoder 141 * @disp_info: Pointer to the display info 142 */ 143 int dpu_encoder_setup(struct drm_device *dev, struct drm_encoder *enc, 144 struct msm_display_info *disp_info); 145 146 /** 147 * dpu_encoder_prepare_commit - prepare encoder at the very beginning of an 148 * atomic commit, before any registers are written 149 * @drm_enc: Pointer to previously created drm encoder structure 150 */ 151 void dpu_encoder_prepare_commit(struct drm_encoder *drm_enc); 152 153 /** 154 * dpu_encoder_set_idle_timeout - set the idle timeout for video 155 * and command mode encoders. 156 * @drm_enc: Pointer to previously created drm encoder structure 157 * @idle_timeout: idle timeout duration in milliseconds 158 */ 159 void dpu_encoder_set_idle_timeout(struct drm_encoder *drm_enc, 160 u32 idle_timeout); 161 /** 162 * dpu_encoder_get_linecount - get interface line count for the encoder. 163 * @drm_enc: Pointer to previously created drm encoder structure 164 */ 165 int dpu_encoder_get_linecount(struct drm_encoder *drm_enc); 166 167 /** 168 * dpu_encoder_get_vsync_count - get vsync count for the encoder. 169 * @drm_enc: Pointer to previously created drm encoder structure 170 */ 171 int dpu_encoder_get_vsync_count(struct drm_encoder *drm_enc); 172 173 #endif /* __DPU_ENCODER_H__ */ 174