drivers/gpu/drm/renesas/rz-du/rzg2l_du_crtc.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * RZ/G2L Display Unit CRTCs
   4  *
   5  * Copyright (C) 2023 Renesas Electronics Corporation
   6  *
   7  * Based on rcar_du_crtc.h
   8  */
   9
  10 #ifndef __RZG2L_DU_CRTC_H__
  11 #define __RZG2L_DU_CRTC_H__
  12
  13 #include <linux/container_of.h>
  14 #include <linux/mutex.h>
  15 #include <linux/spinlock.h>
  16 #include <linux/wait.h>
  17
  18 #include <drm/drm_crtc.h>
  19 #include <drm/drm_writeback.h>
  20
  21 #include <media/vsp1.h>
  22
  23 struct clk;
  24 struct reset_control;
  25 struct rzg2l_du_vsp;
  26 struct rzg2l_du_format_info;
  27
  28 /**
  29  * struct rzg2l_du_crtc - the CRTC, representing a DU superposition processor
  30  * @crtc: base DRM CRTC
  31  * @dev: the DU device
  32  * @initialized: whether the CRTC has been initialized and clocks enabled
  33  * @vblank_enable: whether vblank events are enabled on this CRTC
  34  * @event: event to post when the pending page flip completes
  35  * @flip_wait: wait queue used to signal page flip completion
  36  * @vsp: VSP feeding video to this CRTC
  37  * @vsp_pipe: index of the VSP pipeline feeding video to this CRTC
  38  * @rstc: reset controller
  39  * @rzg2l_clocks: the bus, main and video clock
  40  */
  41 struct rzg2l_du_crtc {
  42         struct drm_crtc crtc;
  43
  44         struct rzg2l_du_device *dev;
  45         bool initialized;
  46
  47         bool vblank_enable;
  48         struct drm_pending_vblank_event *event;
  49         wait_queue_head_t flip_wait;
  50
  51         struct rzg2l_du_vsp *vsp;
  52         unsigned int vsp_pipe;
  53
  54         const char *const *sources;
  55         unsigned int sources_count;
  56
  57         struct reset_control *rstc;
  58         struct {
  59                 struct clk *aclk;
  60                 struct clk *pclk;
  61                 struct clk *dclk;
  62         } rzg2l_clocks;
  63 };
  64
  65 static inline struct rzg2l_du_crtc *to_rzg2l_crtc(struct drm_crtc *c)
  66 {
  67         return container_of(c, struct rzg2l_du_crtc, crtc);
  68 }
  69
  70 /**
  71  * struct rzg2l_du_crtc_state - Driver-specific CRTC state
  72  * @state: base DRM CRTC state
  73  * @outputs: bitmask of the outputs (enum rzg2l_du_output) driven by this CRTC
  74  */
  75 struct rzg2l_du_crtc_state {
  76         struct drm_crtc_state state;
  77         unsigned int outputs;
  78 };
  79
  80 static inline struct rzg2l_du_crtc_state *to_rzg2l_crtc_state(struct drm_crtc_state *s)
  81 {
  82         return container_of(s, struct rzg2l_du_crtc_state, state);
  83 }
  84
  85 int rzg2l_du_crtc_create(struct rzg2l_du_device *rcdu);
  86
  87 void rzg2l_du_crtc_finish_page_flip(struct rzg2l_du_crtc *rcrtc);
  88
  89 #endif /* __RZG2L_DU_CRTC_H__ */