1 /* 2 * rcar_du_plane.h -- R-Car Display Unit Planes 3 * 4 * Copyright (C) 2013-2014 Renesas Electronics Corporation 5 * 6 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 */ 13 14 #ifndef __RCAR_DU_PLANE_H__ 15 #define __RCAR_DU_PLANE_H__ 16 17 #include <linux/mutex.h> 18 19 #include <drm/drmP.h> 20 #include <drm/drm_crtc.h> 21 22 struct rcar_du_format_info; 23 struct rcar_du_group; 24 25 /* The RCAR DU has 8 hardware planes, shared between KMS planes and CRTCs. As 26 * using KMS planes requires at least one of the CRTCs being enabled, no more 27 * than 7 KMS planes can be available. We thus create 7 KMS planes and 28 * 9 software planes (one for each KMS planes and one for each CRTC). 29 */ 30 31 #define RCAR_DU_NUM_KMS_PLANES 7 32 #define RCAR_DU_NUM_HW_PLANES 8 33 #define RCAR_DU_NUM_SW_PLANES 9 34 35 struct rcar_du_plane { 36 struct rcar_du_group *group; 37 struct drm_crtc *crtc; 38 39 bool enabled; 40 41 int hwindex; /* 0-based, -1 means unused */ 42 unsigned int alpha; 43 unsigned int colorkey; 44 unsigned int zpos; 45 46 const struct rcar_du_format_info *format; 47 48 unsigned long dma[2]; 49 unsigned int pitch; 50 51 unsigned int width; 52 unsigned int height; 53 54 unsigned int src_x; 55 unsigned int src_y; 56 unsigned int dst_x; 57 unsigned int dst_y; 58 }; 59 60 struct rcar_du_planes { 61 struct rcar_du_plane planes[RCAR_DU_NUM_SW_PLANES]; 62 unsigned int free; 63 struct mutex lock; 64 65 struct drm_property *alpha; 66 struct drm_property *colorkey; 67 struct drm_property *zpos; 68 }; 69 70 int rcar_du_planes_init(struct rcar_du_group *rgrp); 71 int rcar_du_planes_register(struct rcar_du_group *rgrp); 72 73 void rcar_du_plane_setup(struct rcar_du_plane *plane); 74 void rcar_du_plane_update_base(struct rcar_du_plane *plane); 75 void rcar_du_plane_compute_base(struct rcar_du_plane *plane, 76 struct drm_framebuffer *fb); 77 int rcar_du_plane_reserve(struct rcar_du_plane *plane, 78 const struct rcar_du_format_info *format); 79 void rcar_du_plane_release(struct rcar_du_plane *plane); 80 81 #endif /* __RCAR_DU_PLANE_H__ */ 82