| 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
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| 2 | /* |
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| 3 | * R-Car Display Unit CRTCs |
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| 4 | * |
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| 5 | * Copyright (C) 2013-2015 Renesas Electronics Corporation |
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| 6 | * |
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| 7 | * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) |
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| 8 | */ |
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| 9 | |
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| 10 | #ifndef __RCAR_DU_CRTC_H__ |
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| 11 | #define __RCAR_DU_CRTC_H__ |
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| 12 | |
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| 13 | #include <linux/mutex.h> |
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| 14 | #include <linux/spinlock.h> |
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| 15 | #include <linux/wait.h> |
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| 16 | |
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| 17 | #include <drm/drm_crtc.h> |
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| 18 | #include <drm/drm_writeback.h> |
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| 19 | |
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| 20 | #include <media/vsp1.h> |
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| 21 | |
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| 22 | struct rcar_du_group; |
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| 23 | struct rcar_du_vsp; |
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| 24 | |
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| 25 | /** |
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| 26 | * struct rcar_du_crtc - the CRTC, representing a DU superposition processor |
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| 27 | * @crtc: base DRM CRTC |
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| 28 | * @dev: the DU device |
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| 29 | * @clock: the CRTC functional clock |
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| 30 | * @extclock: external pixel dot clock (optional) |
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| 31 | * @mmio_offset: offset of the CRTC registers in the DU MMIO block |
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| 32 | * @index: CRTC hardware index |
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| 33 | * @initialized: whether the CRTC has been initialized and clocks enabled |
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| 34 | * @dsysr: cached value of the DSYSR register |
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| 35 | * @vblank_enable: whether vblank events are enabled on this CRTC |
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| 36 | * @event: event to post when the pending page flip completes |
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| 37 | * @flip_wait: wait queue used to signal page flip completion |
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| 38 | * @vblank_lock: protects vblank_wait and vblank_count |
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| 39 | * @vblank_wait: wait queue used to signal vertical blanking |
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| 40 | * @vblank_count: number of vertical blanking interrupts to wait for |
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| 41 | * @group: CRTC group this CRTC belongs to |
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| 42 | * @cmm: CMM associated with this CRTC |
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| 43 | * @vsp: VSP feeding video to this CRTC |
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| 44 | * @vsp_pipe: index of the VSP pipeline feeding video to this CRTC |
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| 45 | * @writeback: the writeback connector |
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| 46 | */ |
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| 47 | struct rcar_du_crtc { |
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| 48 | struct drm_crtc crtc; |
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| 49 | |
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| 50 | struct rcar_du_device *dev; |
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| 51 | struct clk *clock; |
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| 52 | struct clk *extclock; |
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| 53 | unsigned int mmio_offset; |
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| 54 | unsigned int index; |
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| 55 | bool initialized; |
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| 56 | |
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| 57 | u32 dsysr; |
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| 58 | |
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| 59 | bool vblank_enable; |
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| 60 | struct drm_pending_vblank_event *event; |
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| 61 | wait_queue_head_t flip_wait; |
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| 62 | |
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| 63 | spinlock_t vblank_lock; |
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| 64 | wait_queue_head_t vblank_wait; |
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| 65 | unsigned int vblank_count; |
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| 66 | |
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| 67 | struct rcar_du_group *group; |
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| 68 | struct platform_device *cmm; |
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| 69 | struct rcar_du_vsp *vsp; |
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| 70 | unsigned int vsp_pipe; |
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| 71 | |
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| 72 | const char *const *sources; |
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| 73 | unsigned int sources_count; |
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| 74 | |
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| 75 | struct drm_writeback_connector writeback; |
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| 76 | }; |
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| 77 | |
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| 78 | #define to_rcar_crtc(c) container_of(c, struct rcar_du_crtc, crtc) |
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| 79 | #define wb_to_rcar_crtc(c) container_of(c, struct rcar_du_crtc, writeback) |
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| 80 | |
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| 81 | /** |
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| 82 | * struct rcar_du_crtc_state - Driver-specific CRTC state |
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| 83 | * @state: base DRM CRTC state |
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| 84 | * @crc: CRC computation configuration |
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| 85 | * @outputs: bitmask of the outputs (enum rcar_du_output) driven by this CRTC |
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| 86 | */ |
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| 87 | struct rcar_du_crtc_state { |
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| 88 | struct drm_crtc_state state; |
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| 89 | |
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| 90 | struct vsp1_du_crc_config crc; |
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| 91 | unsigned int outputs; |
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| 92 | }; |
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| 93 | |
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| 94 | #define to_rcar_crtc_state(s) container_of(s, struct rcar_du_crtc_state, state) |
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| 95 | |
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| 96 | int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int swindex, |
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| 97 | unsigned int hwindex); |
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| 98 | |
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| 99 | void rcar_du_crtc_finish_page_flip(struct rcar_du_crtc *rcrtc); |
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| 100 | |
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| 101 | void rcar_du_crtc_dsysr_clr_set(struct rcar_du_crtc *rcrtc, u32 clr, u32 set); |
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| 102 | |
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| 103 | #endif /* __RCAR_DU_CRTC_H__ */ |
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| 104 | |
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