From 25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef Mon Sep 17 00:00:00 2001 From: Jeykumar Sankaran Date: Wed, 27 Jun 2018 15:26:09 -0400 Subject: drm/msm: Add SDM845 DPU support SDM845 SoC includes the Mobile Display Sub System (MDSS) which is a top level wrapper consisting of Display Processing Unit (DPU) and display peripheral modules such as Display Serial Interface (DSI) and DisplayPort (DP). MDSS functions essentially as a back-end composition engine. It blends video and graphic images stored in the frame buffers and scans out the composed image to a display sink (over DSI/DP). The following diagram represents hardware blocks for a simple pipeline (two planes are present on a given crtc which is connected to a DSI connector): MDSS +---------------------------------+ | +-----------------------------+ | | | DPU | | | | +--------+ +--------+ | | | | | SSPP | | SSPP | | | | | +----+---+ +----+---+ | | | | | | | | | | +----v-----------v---+ | | | | | Layer Mixer (LM) | | | | | +--------------------+ | | | | +--------------------+ | | | | | PingPong (PP) | | | | | +--------------------+ | | | | +--------------------+ | | | | | INTERFACE (VIDEO) | | | | | +---+----------------+ | | | +------|----------------------+ | | | | | +------|---------------------+ | | | | DISPLAY PERIPHERALS | | | | +---v-+ +-----+ | | | | | DSI | | DP | | | | | +-----+ +-----+ | | | +----------------------------+ | +---------------------------------+ The number of DPU sub-blocks (i.e. SSPPs, LMs, PP blocks and INTFs) depends on SoC capabilities. Overview of DPU sub-blocks: --------------------------- * Source Surface Processor (SSPP): Refers to any of hardware pipes like ViG, DMA etc. Only ViG pipes are capable of performing format conversion, scaling and quality improvement for source surfaces. * Layer Mixer (LM): Blend source surfaces together (in requested zorder) * PingPong (PP): This block controls frame done interrupt output, EOL and EOF generation, overflow/underflow control. * Display interface (INTF): Timing generator and interface connecting the display peripherals. DRM components mapping to DPU architecture: ------------------------------------------ PLANEs maps to SSPPs CRTC maps to LMs Encoder maps to PPs, INTFs Data flow setup: --------------- MDSS hardware can support various data flows (e.g.): - Dual pipe: Output from two LMs combined to single display. - Split display: Output from two LMs connected to two separate interfaces. The hardware capabilities determine the number of concurrent data paths possible. Any control path (i.e. pipeline w/i DPU) can be routed to any of the hardware data paths. A given control path can be triggered, flushed and controlled independently. Changes in v3: - Move msm_media_info.h from uapi to dpu/ subdir - Remove preclose callback dpu (it's handled in core) - Fix kbuild warnings with parent_ops - Remove unused functions from dpu_core_irq - Rename mdss_phys to mdss - Rename mdp_phys address space to mdp - Drop _phys from vbif and regdma binding names Signed-off-by: Abhinav Kumar Signed-off-by: Archit Taneja Signed-off-by: Chandan Uddaraju Signed-off-by: Jeykumar Sankaran Signed-off-by: Jordan Crouse Signed-off-by: Rajesh Yadav Signed-off-by: Sravanthi Kollukuduru Signed-off-by: Sean Paul [robclark minor rebase] Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h | 191 ++++++++++++++++++++++++++++ 1 file changed, 191 insertions(+) create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h (limited to 'drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h') diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h new file mode 100644 index 000000000000..ce92901ed227 --- /dev/null +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h @@ -0,0 +1,191 @@ +/* + * Copyright (c) 2015-2018, The Linux Foundation. All rights reserved. + * Copyright (C) 2013 Red Hat + * Author: Rob Clark + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see . + */ + +#ifndef __DPU_ENCODER_H__ +#define __DPU_ENCODER_H__ + +#include +#include "dpu_hw_mdss.h" + +#define DPU_ENCODER_FRAME_EVENT_DONE BIT(0) +#define DPU_ENCODER_FRAME_EVENT_ERROR BIT(1) +#define DPU_ENCODER_FRAME_EVENT_PANEL_DEAD BIT(2) +#define DPU_ENCODER_FRAME_EVENT_IDLE BIT(3) + +#define IDLE_TIMEOUT (66 - 16/2) + +/** + * Encoder functions and data types + * @intfs: Interfaces this encoder is using, INTF_MODE_NONE if unused + * @needs_cdm: Encoder requests a CDM based on pixel format conversion needs + * @display_num_of_h_tiles: Number of horizontal tiles in case of split + * interface + * @topology: Topology of the display + */ +struct dpu_encoder_hw_resources { + enum dpu_intf_mode intfs[INTF_MAX]; + bool needs_cdm; + u32 display_num_of_h_tiles; +}; + +/** + * dpu_encoder_kickoff_params - info encoder requires at kickoff + * @affected_displays: bitmask, bit set means the ROI of the commit lies within + * the bounds of the physical display at the bit index + */ +struct dpu_encoder_kickoff_params { + unsigned long affected_displays; +}; + +/** + * dpu_encoder_get_hw_resources - Populate table of required hardware resources + * @encoder: encoder pointer + * @hw_res: resource table to populate with encoder required resources + * @conn_state: report hw reqs based on this proposed connector state + */ +void dpu_encoder_get_hw_resources(struct drm_encoder *encoder, + struct dpu_encoder_hw_resources *hw_res, + struct drm_connector_state *conn_state); + +/** + * dpu_encoder_register_vblank_callback - provide callback to encoder that + * will be called on the next vblank. + * @encoder: encoder pointer + * @cb: callback pointer, provide NULL to deregister and disable IRQs + * @data: user data provided to callback + */ +void dpu_encoder_register_vblank_callback(struct drm_encoder *encoder, + void (*cb)(void *), void *data); + +/** + * dpu_encoder_register_frame_event_callback - provide callback to encoder that + * will be called after the request is complete, or other events. + * @encoder: encoder pointer + * @cb: callback pointer, provide NULL to deregister + * @data: user data provided to callback + */ +void dpu_encoder_register_frame_event_callback(struct drm_encoder *encoder, + void (*cb)(void *, u32), void *data); + +/** + * dpu_encoder_prepare_for_kickoff - schedule double buffer flip of the ctl + * path (i.e. ctl flush and start) at next appropriate time. + * Immediately: if no previous commit is outstanding. + * Delayed: Block until next trigger can be issued. + * @encoder: encoder pointer + * @params: kickoff time parameters + */ +void dpu_encoder_prepare_for_kickoff(struct drm_encoder *encoder, + struct dpu_encoder_kickoff_params *params); + +/** + * dpu_encoder_trigger_kickoff_pending - Clear the flush bits from previous + * kickoff and trigger the ctl prepare progress for command mode display. + * @encoder: encoder pointer + */ +void dpu_encoder_trigger_kickoff_pending(struct drm_encoder *encoder); + +/** + * dpu_encoder_kickoff - trigger a double buffer flip of the ctl path + * (i.e. ctl flush and start) immediately. + * @encoder: encoder pointer + */ +void dpu_encoder_kickoff(struct drm_encoder *encoder); + +/** + * dpu_encoder_wait_for_event - Waits for encoder events + * @encoder: encoder pointer + * @event: event to wait for + * MSM_ENC_COMMIT_DONE - Wait for hardware to have flushed the current pending + * frames to hardware at a vblank or ctl_start + * Encoders will map this differently depending on the + * panel type. + * vid mode -> vsync_irq + * cmd mode -> ctl_start + * MSM_ENC_TX_COMPLETE - Wait for the hardware to transfer all the pixels to + * the panel. Encoders will map this differently + * depending on the panel type. + * vid mode -> vsync_irq + * cmd mode -> pp_done + * Returns: 0 on success, -EWOULDBLOCK if already signaled, error otherwise + */ +int dpu_encoder_wait_for_event(struct drm_encoder *drm_encoder, + enum msm_event_wait event); + +/* + * dpu_encoder_get_intf_mode - get interface mode of the given encoder + * @encoder: Pointer to drm encoder object + */ +enum dpu_intf_mode dpu_encoder_get_intf_mode(struct drm_encoder *encoder); + +/** + * dpu_encoder_virt_restore - restore the encoder configs + * @encoder: encoder pointer + */ +void dpu_encoder_virt_restore(struct drm_encoder *encoder); + +/** + * dpu_encoder_check_mode - check if given mode is supported or not + * @drm_enc: Pointer to drm encoder object + * @mode: Mode to be checked + * @Return: true if it is cmd mode + */ +bool dpu_encoder_check_mode(struct drm_encoder *drm_enc, u32 mode); + +/** + * dpu_encoder_init - initialize virtual encoder object + * @dev: Pointer to drm device structure + * @disp_info: Pointer to display information structure + * Returns: Pointer to newly created drm encoder + */ +struct drm_encoder *dpu_encoder_init( + struct drm_device *dev, + int drm_enc_mode); + +/** + * dpu_encoder_setup - setup dpu_encoder for the display probed + * @dev: Pointer to drm device structure + * @enc: Pointer to the drm_encoder + * @disp_info: Pointer to the display info + */ +int dpu_encoder_setup(struct drm_device *dev, struct drm_encoder *enc, + struct msm_display_info *disp_info); + +/** + * dpu_encoder_destroy - destroy previously initialized virtual encoder + * @drm_enc: Pointer to previously created drm encoder structure + */ +void dpu_encoder_destroy(struct drm_encoder *drm_enc); + +/** + * dpu_encoder_prepare_commit - prepare encoder at the very beginning of an + * atomic commit, before any registers are written + * @drm_enc: Pointer to previously created drm encoder structure + */ +void dpu_encoder_prepare_commit(struct drm_encoder *drm_enc); + +/** + * dpu_encoder_set_idle_timeout - set the idle timeout for video + * and command mode encoders. + * @drm_enc: Pointer to previously created drm encoder structure + * @idle_timeout: idle timeout duration in milliseconds + */ +void dpu_encoder_set_idle_timeout(struct drm_encoder *drm_enc, + u32 idle_timeout); + +#endif /* __DPU_ENCODER_H__ */ -- cgit v1.2.3