/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright ( c ) 2022 - 2024 Qualcomm Innovation Center , Inc . All rights reserved .
* Copyright ( c ) 2015 - 2018 The Linux Foundation . All rights reserved .
*/
#ifndef __DPU_ENCODER_PHYS_H__
#define __DPU_ENCODER_PHYS_H__
#include <drm/drm_writeback.h>
#include <linux/jiffies.h>
#include "dpu_kms.h"
#include "dpu_hw_intf.h"
#include "dpu_hw_wb.h"
#include "dpu_hw_pingpong.h"
#include "dpu_hw_cdm.h"
#include "dpu_hw_ctl.h"
#include "dpu_hw_top.h"
#include "dpu_hw_util.h"
#include "dpu_encoder.h"
#include "dpu_crtc.h"
#define DPU_ENCODER_NAME_MAX 16
/* wait for at most 2 vsync for lowest refresh rate (24hz) */
#define KICKOFF_TIMEOUT_MS 84
#define KICKOFF_TIMEOUT_JIFFIES msecs_to_jiffies(KICKOFF_TIMEOUT_MS)
/**
* enum dpu_enc_split_role - Role this physical encoder will play in a
* split - panel configuration , where one panel is master , and others slaves .
* Masters have extra responsibilities , like managing the VBLANK IRQ .
* @ ENC_ROLE_SOLO : This is the one and only panel . This encoder is master .
* @ ENC_ROLE_MASTER : This encoder is the master of a split panel config .
* @ ENC_ROLE_SLAVE : This encoder is not the master of a split panel config .
*/
enum dpu_enc_split_role {
ENC_ROLE_SOLO,
ENC_ROLE_MASTER,
ENC_ROLE_SLAVE,
};
/**
* enum dpu_enc_enable_state - current enabled state of the physical encoder
* @ DPU_ENC_DISABLING : Encoder transitioning to disable state
* Events bounding transition are encoder type specific
* @ DPU_ENC_DISABLED : Encoder is disabled
* @ DPU_ENC_ENABLING : Encoder transitioning to enabled
* Events bounding transition are encoder type specific
* @ DPU_ENC_ENABLED : Encoder is enabled
* @ DPU_ENC_ERR_NEEDS_HW_RESET : Encoder is enabled , but requires a hw_reset
* to recover from a previous error
*/
enum dpu_enc_enable_state {
DPU_ENC_DISABLING,
DPU_ENC_DISABLED,
DPU_ENC_ENABLING,
DPU_ENC_ENABLED,
DPU_ENC_ERR_NEEDS_HW_RESET
};
struct dpu_encoder_phys;
/**
* struct dpu_encoder_phys_ops - Interface the physical encoders provide to
* the containing virtual encoder .
* @ prepare_commit : MSM Atomic Call , start of atomic commit sequence
* @ is_master : Whether this phys_enc is the current master
* encoder . Can be switched at enable time . Based
* on split_role and current mode ( CMD / VID ) .
* @ atomic_mode_set : DRM Call . Set a DRM mode .
* This likely caches the mode , for use at enable .
* @ enable : DRM Call . Enable a DRM mode .
* @ disable : DRM Call . Disable mode .
* @ control_vblank_irq Register / Deregister for VBLANK IRQ
* @ wait_for_commit_done : Wait for hardware to have flushed the
* current pending frames to hardware
* @ wait_for_tx_complete : Wait for hardware to transfer the pixels
* to the panel
* @ wait_for_vblank : Wait for VBLANK , for sub - driver internal use
* @ prepare_for_kickoff : Do any work necessary prior to a kickoff
* For CMD encoder , may wait for previous tx done
* @ handle_post_kickoff : Do any work necessary post - kickoff work
* @ trigger_start : Process start event on physical encoder
* @ needs_single_flush : Whether encoder slaves need to be flushed
* @ irq_enable : Handler to enable all the encoder IRQs
* @ irq_disable : Handler to disable all the encoder IRQs
* @ prepare_idle_pc : phys encoder can update the vsync_enable status
* on idle power collapse prepare
* @ restore : Restore all the encoder configs .
* @ get_line_count : Obtain current vertical line count
*/
struct dpu_encoder_phys_ops {
void (*prepare_commit)(struct dpu_encoder_phys *encoder);
bool (*is_master)(struct dpu_encoder_phys *encoder);
void (*atomic_mode_set)(struct dpu_encoder_phys *encoder,
struct drm_crtc_state *crtc_state,
struct drm_connector_state *conn_state);
void (*enable)(struct dpu_encoder_phys *encoder);
void (*disable)(struct dpu_encoder_phys *encoder);
int (*control_vblank_irq)(struct dpu_encoder_phys *enc, bool enable);
int (*wait_for_commit_done)(struct dpu_encoder_phys *phys_enc);
int (*wait_for_tx_complete)(struct dpu_encoder_phys *phys_enc);
void (*prepare_for_kickoff)(struct dpu_encoder_phys *phys_enc);
void (*handle_post_kickoff)(struct dpu_encoder_phys *phys_enc);
void (*trigger_start)(struct dpu_encoder_phys *phys_enc);
bool (*needs_single_flush)(struct dpu_encoder_phys *phys_enc);
void (*irq_enable)(struct dpu_encoder_phys *phys);
void (*irq_disable)(struct dpu_encoder_phys *phys);
void (*prepare_idle_pc)(struct dpu_encoder_phys *phys_enc);
void (*restore)(struct dpu_encoder_phys *phys);
int (*get_line_count)(struct dpu_encoder_phys *phys);
int (*get_frame_count)(struct dpu_encoder_phys *phys);
void (*prepare_wb_job)(struct dpu_encoder_phys *phys_enc,
struct drm_writeback_job *job);
void (*cleanup_wb_job)(struct dpu_encoder_phys *phys_enc,
struct drm_writeback_job *job);
bool (*is_valid_for_commit)(struct dpu_encoder_phys *phys_enc);
};
/**
* enum dpu_intr_idx - dpu encoder interrupt index
* @ INTR_IDX_VSYNC : Vsync interrupt for video mode panel
* @ INTR_IDX_PINGPONG : Pingpong done interrupt for cmd mode panel
* @ INTR_IDX_UNDERRUN : Underrun interrupt for video and cmd mode panel
* @ INTR_IDX_RDPTR : Readpointer done interrupt for cmd mode panel
* @ INTR_IDX_WB_DONE : Writeback done interrupt for virtual connector
*/
enum dpu_intr_idx {
INTR_IDX_VSYNC,
INTR_IDX_PINGPONG,
INTR_IDX_UNDERRUN,
INTR_IDX_CTL_START,
INTR_IDX_RDPTR,
INTR_IDX_WB_DONE,
INTR_IDX_MAX,
};
/**
* struct dpu_encoder_phys - physical encoder that drives a single INTF block
* tied to a specific panel / sub - panel . Abstract type , sub - classed by
* phys_vid or phys_cmd for video mode or command mode encs respectively .
* @ parent : Pointer to the containing virtual encoder
* @ ops : Operations exposed to the virtual encoder
* @ parent_ops : Callbacks exposed by the parent to the phys_enc
* @ hw_mdptop : Hardware interface to the top registers
* @ hw_ctl : Hardware interface to the ctl registers
* @ hw_pp : Hardware interface to the ping pong registers
* @ hw_intf : Hardware interface to the intf registers
* @ hw_wb : Hardware interface to the wb registers
* @ hw_cdm : Hardware interface to the CDM registers
* @ dpu_kms : Pointer to the dpu_kms top level
* @ cdm_cfg : CDM block config needed to store WB / DP block ' s CDM configuration
* @ cached_mode : DRM mode cached at mode_set time , acted on in enable
* @ vblank_ctl_lock : Vblank ctl mutex lock to protect vblank_refcount
* @ enabled : Whether the encoder has enabled and running a mode
* @ split_role : Role to play in a split - panel configuration
* @ intf_mode : Interface mode
* @ enc_spinlock : Virtual - Encoder - Wide Spin Lock for IRQ purposes
* @ enable_state : Enable state tracking
* @ vblank_refcount : Reference count of vblank request
* @ vsync_cnt : Vsync count for the physical encoder
* @ underrun_cnt : Underrun count for the physical encoder
* @ pending_kickoff_cnt : Atomic counter tracking the number of kickoffs
* vs . the number of done / vblank irqs . Should hover
* between 0 - 2 Incremented when a new kickoff is
* scheduled . Decremented in irq handler
* @ pending_ctlstart_cnt : Atomic counter tracking the number of ctl start
* pending .
* @ pending_kickoff_wq : Wait queue for blocking until kickoff completes
* @ irq : IRQ indices
* @ has_intf_te : Interface TE configuration support
*/
struct dpu_encoder_phys {
struct drm_encoder *parent;
struct dpu_encoder_phys_ops ops;
struct dpu_hw_mdp *hw_mdptop;
struct dpu_hw_ctl *hw_ctl;
struct dpu_hw_pingpong *hw_pp;
struct dpu_hw_intf *hw_intf;
struct dpu_hw_wb *hw_wb;
struct dpu_hw_cdm *hw_cdm;
struct dpu_kms *dpu_kms;
struct dpu_hw_cdm_cfg cdm_cfg;
struct drm_display_mode cached_mode;
struct mutex vblank_ctl_lock;
enum dpu_enc_split_role split_role;
enum dpu_intf_mode intf_mode;
spinlock_t *enc_spinlock;
enum dpu_enc_enable_state enable_state;
int vblank_refcount;
atomic_t vsync_cnt;
atomic_t underrun_cnt;
atomic_t pending_ctlstart_cnt;
atomic_t pending_kickoff_cnt;
wait_queue_head_t pending_kickoff_wq;
unsigned int irq[INTR_IDX_MAX];
bool has_intf_te;
};
static inline int dpu_encoder_phys_inc_pending(struct dpu_encoder_phys *phys)
{
atomic_inc_return(&phys->pending_ctlstart_cnt);
return atomic_inc_return(&phys->pending_kickoff_cnt);
}
/**
* struct dpu_encoder_phys_wb - sub - class of dpu_encoder_phys to handle command
* mode specific operations
* @ base : Baseclass physical encoder structure
* @ wbirq_refcount : Reference count of writeback interrupt
* @ wb_done_timeout_cnt : number of wb done irq timeout errors
* @ wb_cfg : writeback block config to store fb related details
* @ wb_conn : backpointer to writeback connector
* @ wb_job : backpointer to current writeback job
* @ dest : dpu buffer layout for current writeback output buffer
*/
struct dpu_encoder_phys_wb {
struct dpu_encoder_phys base;
atomic_t wbirq_refcount;
int wb_done_timeout_cnt;
struct dpu_hw_wb_cfg wb_cfg;
struct drm_writeback_connector *wb_conn;
struct drm_writeback_job *wb_job;
struct dpu_hw_fmt_layout dest;
};
/**
* struct dpu_encoder_phys_cmd - sub - class of dpu_encoder_phys to handle command
* mode specific operations
* @ base : Baseclass physical encoder structure
* @ intf_idx : Intf Block index used by this phys encoder
* @ stream_sel : Stream selection for multi - stream interfaces
* @ serialize_wait4pp : serialize wait4pp feature waits for pp_done interrupt
* after ctl_start instead of before next frame kickoff
* @ pp_timeout_report_cnt : number of pingpong done irq timeout errors
* @ pending_vblank_cnt : Atomic counter tracking pending wait for VBLANK
* @ pending_vblank_wq : Wait queue for blocking until VBLANK received
*/
struct dpu_encoder_phys_cmd {
struct dpu_encoder_phys base;
int stream_sel;
bool serialize_wait4pp;
int pp_timeout_report_cnt;
atomic_t pending_vblank_cnt;
wait_queue_head_t pending_vblank_wq;
};
/**
* struct dpu_enc_phys_init_params - initialization parameters for phys encs
* @ dpu_kms : Pointer to the dpu_kms top level
* @ parent : Pointer to the containing virtual encoder
* @ parent_ops : Callbacks exposed by the parent to the phys_enc
* @ split_role : Role to play in a split - panel configuration
* @ hw_intf : Hardware interface to the intf registers
* @ hw_wb : Hardware interface to the wb registers
* @ enc_spinlock : Virtual - Encoder - Wide Spin Lock for IRQ purposes
*/
struct dpu_enc_phys_init_params {
struct dpu_kms *dpu_kms;
struct drm_encoder *parent;
enum dpu_enc_split_role split_role;
struct dpu_hw_intf *hw_intf;
struct dpu_hw_wb *hw_wb;
spinlock_t *enc_spinlock;
};
/**
* dpu_encoder_wait_info - container for passing arguments to irq wait functions
* @ wq : wait queue structure
* @ atomic_cnt : wait until atomic_cnt equals zero
* @ timeout_ms : timeout value in milliseconds
*/
struct dpu_encoder_wait_info {
wait_queue_head_t *wq;
atomic_t *atomic_cnt;
s64 timeout_ms;
};
struct dpu_encoder_phys *dpu_encoder_phys_vid_init(struct drm_device *dev,
struct dpu_enc_phys_init_params *p);
struct dpu_encoder_phys *dpu_encoder_phys_cmd_init(struct drm_device *dev,
struct dpu_enc_phys_init_params *p);
struct dpu_encoder_phys *dpu_encoder_phys_wb_init(struct drm_device *dev,
struct dpu_enc_phys_init_params *p);
void dpu_encoder_helper_trigger_start(struct dpu_encoder_phys *phys_enc);
static inline enum dpu_3d_blend_mode dpu_encoder_helper_get_3d_blend_mode(
struct dpu_encoder_phys *phys_enc)
{
struct dpu_crtc_state *dpu_cstate;
if (!phys_enc || phys_enc->enable_state == DPU_ENC_DISABLING)
return BLEND_3D_NONE;
dpu_cstate = to_dpu_crtc_state(phys_enc->parent->crtc->state);
/* Use merge_3d unless DSC MERGE topology is used */
if (phys_enc->split_role == ENC_ROLE_SOLO &&
dpu_cstate->num_mixers == CRTC_DUAL_MIXERS &&
!dpu_encoder_use_dsc_merge(phys_enc->parent))
return BLEND_3D_H_ROW_INT;
return BLEND_3D_NONE;
}
unsigned int dpu_encoder_helper_get_cwb_mask(struct dpu_encoder_phys *phys_enc);
unsigned int dpu_encoder_helper_get_dsc(struct dpu_encoder_phys *phys_enc);
struct drm_dsc_config *dpu_encoder_get_dsc_config(struct drm_encoder *drm_enc);
u32 dpu_encoder_get_drm_fmt(struct dpu_encoder_phys *phys_enc);
bool dpu_encoder_needs_periph_flush(struct dpu_encoder_phys *phys_enc);
void dpu_encoder_helper_split_config(
struct dpu_encoder_phys *phys_enc,
enum dpu_intf interface);
void dpu_encoder_helper_report_irq_timeout(struct dpu_encoder_phys *phys_enc,
enum dpu_intr_idx intr_idx);
int dpu_encoder_helper_wait_for_irq(struct dpu_encoder_phys *phys_enc,
unsigned int irq,
void (*func)(void *arg),
struct dpu_encoder_wait_info *wait_info);
void dpu_encoder_helper_phys_cleanup(struct dpu_encoder_phys *phys_enc);
void dpu_encoder_helper_phys_setup_cwb(struct dpu_encoder_phys *phys_enc,
bool enable);
void dpu_encoder_helper_phys_setup_cdm(struct dpu_encoder_phys *phys_enc,
const struct msm_format *dpu_fmt,
u32 output_type);
void dpu_encoder_vblank_callback(struct drm_encoder *drm_enc,
struct dpu_encoder_phys *phy_enc);
void dpu_encoder_underrun_callback(struct drm_encoder *drm_enc,
struct dpu_encoder_phys *phy_enc);
void dpu_encoder_frame_done_callback(
struct drm_encoder *drm_enc,
struct dpu_encoder_phys *ready_phys, u32 event);
void dpu_encoder_phys_init(struct dpu_encoder_phys *phys,
struct dpu_enc_phys_init_params *p);
#endif /* __dpu_encoder_phys_H__ */
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