drivers/gpu/drm/rcar-du/rcar_du_drv.h

   1 /*
   2  * rcar_du_drv.h  --  R-Car Display Unit DRM driver
   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_DRV_H__
  15 #define __RCAR_DU_DRV_H__
  16
  17 #include <linux/kernel.h>
  18 #include <linux/wait.h>
  19
  20 #include "rcar_du_crtc.h"
  21 #include "rcar_du_group.h"
  22
  23 struct clk;
  24 struct device;
  25 struct drm_device;
  26 struct drm_fbdev_cma;
  27 struct rcar_du_device;
  28 struct rcar_du_lvdsenc;
  29
  30 #define RCAR_DU_FEATURE_CRTC_IRQ_CLOCK  (1 << 0)        /* Per-CRTC IRQ and clock */
  31 #define RCAR_DU_FEATURE_EXT_CTRL_REGS   (1 << 1)        /* Has extended control registers */
  32
  33 #define RCAR_DU_QUIRK_ALIGN_128B        (1 << 0)        /* Align pitches to 128 bytes */
  34 #define RCAR_DU_QUIRK_LVDS_LANES        (1 << 1)        /* LVDS lanes 1 and 3 inverted */
  35
  36 /*
  37  * struct rcar_du_output_routing - Output routing specification
  38  * @possible_crtcs: bitmask of possible CRTCs for the output
  39  * @encoder_type: DRM type of the internal encoder associated with the output
  40  * @port: device tree port number corresponding to this output route
  41  *
  42  * The DU has 5 possible outputs (DPAD0/1, LVDS0/1, TCON). Output routing data
  43  * specify the valid SoC outputs, which CRTCs can drive the output, and the type
  44  * of in-SoC encoder for the output.
  45  */
  46 struct rcar_du_output_routing {
  47         unsigned int possible_crtcs;
  48         unsigned int encoder_type;
  49         unsigned int port;
  50 };
  51
  52 /*
  53  * struct rcar_du_device_info - DU model-specific information
  54  * @features: device features (RCAR_DU_FEATURE_*)
  55  * @quirks: device quirks (RCAR_DU_QUIRK_*)
  56  * @num_crtcs: total number of CRTCs
  57  * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*)
  58  * @num_lvds: number of internal LVDS encoders
  59  */
  60 struct rcar_du_device_info {
  61         unsigned int features;
  62         unsigned int quirks;
  63         unsigned int num_crtcs;
  64         struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX];
  65         unsigned int num_lvds;
  66 };
  67
  68 #define RCAR_DU_MAX_CRTCS               3
  69 #define RCAR_DU_MAX_GROUPS              DIV_ROUND_UP(RCAR_DU_MAX_CRTCS, 2)
  70 #define RCAR_DU_MAX_LVDS                2
  71
  72 struct rcar_du_device {
  73         struct device *dev;
  74         const struct rcar_du_device_info *info;
  75
  76         void __iomem *mmio;
  77
  78         struct drm_device *ddev;
  79         struct drm_fbdev_cma *fbdev;
  80
  81         struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS];
  82         unsigned int num_crtcs;
  83
  84         struct rcar_du_group groups[RCAR_DU_MAX_GROUPS];
  85
  86         struct {
  87                 struct drm_property *alpha;
  88                 struct drm_property *colorkey;
  89                 struct drm_property *zpos;
  90         } props;
  91
  92         unsigned int dpad0_source;
  93         struct rcar_du_lvdsenc *lvds[RCAR_DU_MAX_LVDS];
  94
  95         struct {
  96                 wait_queue_head_t wait;
  97                 u32 pending;
  98         } commit;
  99 };
 100
 101 static inline bool rcar_du_has(struct rcar_du_device *rcdu,
 102                                unsigned int feature)
 103 {
 104         return rcdu->info->features & feature;
 105 }
 106
 107 static inline bool rcar_du_needs(struct rcar_du_device *rcdu,
 108                                  unsigned int quirk)
 109 {
 110         return rcdu->info->quirks & quirk;
 111 }
 112
 113 static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg)
 114 {
 115         return ioread32(rcdu->mmio + reg);
 116 }
 117
 118 static inline void rcar_du_write(struct rcar_du_device *rcdu, u32 reg, u32 data)
 119 {
 120         iowrite32(data, rcdu->mmio + reg);
 121 }
 122
 123 #endif /* __RCAR_DU_DRV_H__ */