/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (c) 2016-2020, The Linux Foundation. All rights reserved. */ #ifndef __SDE_RM_H__ #define __SDE_RM_H__ #include #include "msm_kms.h" #include "sde_hw_top.h" #define SINGLE_CTL 1 #define DUAL_CTL 2 /** * enum sde_rm_topology_name - HW resource use case in use by connector * @SDE_RM_TOPOLOGY_NONE: No topology in use currently * @SDE_RM_TOPOLOGY_SINGLEPIPE: 1 LM, 1 PP, 1 INTF/WB * @SDE_RM_TOPOLOGY_SINGLEPIPE_DSC: 1 LM, 1 DSC, 1 PP, 1 INTF/WB * @SDE_RM_TOPOLOGY_DUALPIPE: 2 LM, 2 PP, 2 INTF/WB * @SDE_RM_TOPOLOGY_DUALPIPE_DSC: 2 LM, 2 DSC, 2 PP, 2 INTF/WB * @SDE_RM_TOPOLOGY_DUALPIPE_3DMERGE: 2 LM, 2 PP, 3DMux, 1 INTF/WB * @SDE_RM_TOPOLOGY_DUALPIPE_3DMERGE_DSC: 2 LM, 2 PP, 3DMux, 1 DSC, 1 INTF/WB * @SDE_RM_TOPOLOGY_DUALPIPE_DSCMERGE: 2 LM, 2 PP, 2 DSC Merge, 1 INTF/WB * @SDE_RM_TOPOLOGY_PPSPLIT: 1 LM, 2 PPs, 2 INTF/WB */ enum sde_rm_topology_name { SDE_RM_TOPOLOGY_NONE = 0, SDE_RM_TOPOLOGY_SINGLEPIPE, SDE_RM_TOPOLOGY_SINGLEPIPE_DSC, SDE_RM_TOPOLOGY_DUALPIPE, SDE_RM_TOPOLOGY_DUALPIPE_DSC, SDE_RM_TOPOLOGY_DUALPIPE_3DMERGE, SDE_RM_TOPOLOGY_DUALPIPE_3DMERGE_DSC, SDE_RM_TOPOLOGY_DUALPIPE_DSCMERGE, SDE_RM_TOPOLOGY_PPSPLIT, SDE_RM_TOPOLOGY_MAX, }; /** * enum sde_rm_topology_control - HW resource use case in use by connector * @SDE_RM_TOPCTL_RESERVE_LOCK: If set, in AtomicTest phase, after a successful * test, reserve the resources for this display. * Normal behavior would not impact the reservation * list during the AtomicTest phase. * @SDE_RM_TOPCTL_RESERVE_CLEAR: If set, in AtomicTest phase, before testing, * release any reservation held by this display. * Normal behavior would not impact the * reservation list during the AtomicTest phase. * @SDE_RM_TOPCTL_DSPP: Require layer mixers with DSPP capabilities * @SDE_RM_TOPCTL_DS : Require layer mixers with DS capabilities * @SDE_RM_TOPCTL_CWB : Require layer mixers with CWB capabilities */ enum sde_rm_topology_control { SDE_RM_TOPCTL_RESERVE_LOCK, SDE_RM_TOPCTL_RESERVE_CLEAR, SDE_RM_TOPCTL_DSPP, SDE_RM_TOPCTL_DS, SDE_RM_TOPCTL_CWB, }; /** * enum sde_rm_topology_control - HW resource use case in use by connector * @SDE_RM_QSYNC_DISABLED: If set, Qsync feature is supported and in * disable state. * @SDE_RM_QSYNC_CONTINUOUS_MODE: If set, Qsync is enabled in continuous * mode. * @SDE_RM_QSYNC_ONE_SHOT_MODE: If set, Qsync is enabled in one shot mode. * */ enum sde_rm_qsync_modes { SDE_RM_QSYNC_DISABLED, SDE_RM_QSYNC_CONTINUOUS_MODE, SDE_RM_QSYNC_ONE_SHOT_MODE }; /** * struct sde_rm_topology_def - Topology table definition * @top_name: name identifying this topology * @num_lm: number of layer mixers used * @num_comp_enc: number of encoders used * @num_intf: number of interface used * @num_ctl: number of control path used * @needs_split_display: If set split display is enabled */ struct sde_rm_topology_def { enum sde_rm_topology_name top_name; int num_lm; int num_comp_enc; int num_intf; int num_ctl; int needs_split_display; }; /** * struct sde_rm - SDE dynamic hardware resource manager * @dev: device handle for event logging purposes * @rsvps: list of hardware reservations by each crtc->encoder->connector * @hw_blks: array of lists of hardware resources present in the system, one * list per type of hardware block * @hw_mdp: hardware object for mdp_top * @lm_max_width: cached layer mixer maximum width * @rsvp_next_seq: sequence number for next reservation for debugging purposes * @rm_lock: resource manager mutex * @avail_res: Pointer with curr available resources */ struct sde_rm { struct drm_device *dev; struct list_head rsvps; struct list_head hw_blks[SDE_HW_BLK_MAX]; struct sde_hw_mdp *hw_mdp; uint32_t lm_max_width; uint32_t rsvp_next_seq; struct mutex rm_lock; const struct sde_rm_topology_def *topology_tbl; struct msm_resource_caps_info avail_res; }; /** * struct sde_rm_hw_blk - resource manager internal structure * forward declaration for single iterator definition without void pointer */ struct sde_rm_hw_blk; /** * struct sde_rm_hw_iter - iterator for use with sde_rm * @hw: sde_hw object requested, or NULL on failure * @blk: sde_rm internal block representation. Clients ignore. Used as iterator. * @enc_id: DRM ID of Encoder client wishes to search for, or 0 for Any Encoder * @type: Hardware Block Type client wishes to search for. */ struct sde_rm_hw_iter { void *hw; struct sde_rm_hw_blk *blk; uint32_t enc_id; enum sde_hw_blk_type type; }; /** * struct sde_rm_hw_request - data for requesting hw blk * @hw: sde_hw object requested, or NULL on failure * @type: Hardware Block Type client wishes to search for * @id: Hardware block id */ struct sde_rm_hw_request { void *hw; enum sde_hw_blk_type type; int id; }; /** * sde_rm_get_topology_name - get the name of the given topology config * @topology: msm_display_topology topology config * @Return: name of the given topology */ enum sde_rm_topology_name sde_rm_get_topology_name( struct msm_display_topology topology); /** * sde_rm_init - Read hardware catalog and create reservation tracking objects * for all HW blocks. * @rm: SDE Resource Manager handle * @cat: Pointer to hardware catalog * @mmio: mapped register io address of MDP * @dev: device handle for event logging purposes * @Return: 0 on Success otherwise -ERROR */ int sde_rm_init(struct sde_rm *rm, struct sde_mdss_cfg *cat, void __iomem *mmio, struct drm_device *dev); /** * sde_rm_destroy - Free all memory allocated by sde_rm_init * @rm: SDE Resource Manager handle * @Return: 0 on Success otherwise -ERROR */ int sde_rm_destroy(struct sde_rm *rm); /** * sde_rm_reserve - Given a CRTC->Encoder->Connector display chain, analyze * the use connections and user requirements, specified through related * topology control properties, and reserve hardware blocks to that * display chain. * HW blocks can then be accessed through sde_rm_get_* functions. * HW Reservations should be released via sde_rm_release_hw. * @rm: SDE Resource Manager handle * @drm_enc: DRM Encoder handle * @crtc_state: Proposed Atomic DRM CRTC State handle * @conn_state: Proposed Atomic DRM Connector State handle * @test_only: Atomic-Test phase, discard results (unless property overrides) * @Return: 0 on Success otherwise -ERROR */ int sde_rm_reserve(struct sde_rm *rm, struct drm_encoder *drm_enc, struct drm_crtc_state *crtc_state, struct drm_connector_state *conn_state, bool test_only); /** * sde_rm_release - Given the encoder for the display chain, release any * HW blocks previously reserved for that use case. * @rm: SDE Resource Manager handle * @enc: DRM Encoder handle * @nxt: Choose option to release rsvp_nxt * @Return: 0 on Success otherwise -ERROR */ void sde_rm_release(struct sde_rm *rm, struct drm_encoder *enc, bool nxt); /** * sde_rm_get_mdp - Retrieve HW block for MDP TOP. * This is never reserved, and is usable by any display. * @rm: SDE Resource Manager handle * @Return: Pointer to hw block or NULL */ struct sde_hw_mdp *sde_rm_get_mdp(struct sde_rm *rm); /** * sde_rm_init_hw_iter - setup given iterator for new iteration over hw list * using sde_rm_get_hw * @iter: iter object to initialize * @enc_id: DRM ID of Encoder client wishes to search for, or 0 for Any Encoder * @type: Hardware Block Type client wishes to search for. */ void sde_rm_init_hw_iter( struct sde_rm_hw_iter *iter, uint32_t enc_id, enum sde_hw_blk_type type); /** * sde_rm_get_hw - retrieve reserved hw object given encoder and hw type * Meant to do a single pass through the hardware list to iteratively * retrieve hardware blocks of a given type for a given encoder. * Initialize an iterator object. * Set hw block type of interest. Set encoder id of interest, 0 for any. * Function returns first hw of type for that encoder. * Subsequent calls will return the next reserved hw of that type in-order. * Iterator HW pointer will be null on failure to find hw. * @rm: SDE Resource Manager handle * @iter: iterator object * @Return: true on match found, false on no match found */ bool sde_rm_get_hw(struct sde_rm *rm, struct sde_rm_hw_iter *iter); /** * sde_rm_request_hw_blk - retrieve the requested hardware block * @rm: SDE Resource Manager handle * @hw: holds the input and output information of the requested hw block * @Return: true on match found, false on no match found */ bool sde_rm_request_hw_blk(struct sde_rm *rm, struct sde_rm_hw_request *hw); /** * sde_rm_cont_splash_res_init - Read the current MDSS configuration * to update the splash data structure with the topology * configured by the bootloader. * @priv: DRM private structure handle * @rm: SDE Resource Manager handle * @splash_data: Pointer to the splash_data structure to be updated. * @cat: Pointer to the SDE catalog * @Return: 0 on success or error */ int sde_rm_cont_splash_res_init(struct msm_drm_private *priv, struct sde_rm *rm, struct sde_splash_data *splash_data, struct sde_mdss_cfg *cat); /** * sde_rm_update_topology - sets topology property of the connector * @conn_state: drm state of the connector * @topology: topology selected for the display * @return: 0 on success or error */ int sde_rm_update_topology(struct drm_connector_state *conn_state, struct msm_display_topology *topology); /** * sde_rm_topology_is_dual_ctl - checks if topoloy requires two control paths * @rm: SDE Resource Manager handle * @topology: topology selected for the display * @return: true if two control paths are required or false */ static inline bool sde_rm_topology_is_dual_ctl(struct sde_rm *rm, enum sde_rm_topology_name topology) { if ((!rm) || (topology <= SDE_RM_TOPOLOGY_NONE) || (topology >= SDE_RM_TOPOLOGY_MAX)) { pr_err("invalid arguments: rm:%d topology:%d\n", rm == NULL, topology); return false; } return rm->topology_tbl[topology].num_ctl == DUAL_CTL; } /** * sde_rm_ext_blk_create_reserve - Create external HW blocks * in resource manager and reserve for specific encoder. * @rm: SDE Resource Manager handle * @hw: external HW block * @drm_enc: DRM Encoder handle * @Return: 0 on Success otherwise -ERROR */ int sde_rm_ext_blk_create_reserve(struct sde_rm *rm, struct sde_hw_blk *hw, struct drm_encoder *enc); /** * sde_rm_ext_blk_destroy - Given the encoder for the display chain, release * external HW blocks created for that. * @rm: SDE Resource Manager handle * @enc: DRM Encoder handle * @Return: 0 on Success otherwise -ERROR */ int sde_rm_ext_blk_destroy(struct sde_rm *rm, struct drm_encoder *enc); /** * sde_rm_get_resource_info - returns avail hw resource info * @mr: sde rm object * @drm_enc: drm encoder object * @avail_res: out parameter, available resource object * @display_type: type of the display in usage */ void sde_rm_get_resource_info(struct sde_rm *rm, struct drm_encoder *drm_enc, struct msm_resource_caps_info *avail_res, int display_type); #endif /* __SDE_RM_H__ */