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) 2013-2015 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 #include "rcar_du_vsp.h"
  23
  24 struct clk;
  25 struct device;
  26 struct drm_device;
  27 struct drm_fbdev_cma;
  28 struct rcar_du_device;
  29 struct rcar_du_lvdsenc;
  30
  31 #define RCAR_DU_FEATURE_CRTC_IRQ_CLOCK  (1 << 0)        /* Per-CRTC IRQ and clock */
  32 #define RCAR_DU_FEATURE_EXT_CTRL_REGS   (1 << 1)        /* Has extended control registers */
  33 #define RCAR_DU_FEATURE_VSP1_SOURCE     (1 << 2)        /* Has inputs from VSP1 */
  34
  35 #define RCAR_DU_QUIRK_ALIGN_128B        (1 << 0)        /* Align pitches to 128 bytes */
  36 #define RCAR_DU_QUIRK_LVDS_LANES        (1 << 1)        /* LVDS lanes 1 and 3 inverted */
  37
  38 /*
  39  * struct rcar_du_output_routing - Output routing specification
  40  * @possible_crtcs: bitmask of possible CRTCs for the output
  41  * @port: device tree port number corresponding to this output route
  42  *
  43  * The DU has 5 possible outputs (DPAD0/1, LVDS0/1, TCON). Output routing data
  44  * specify the valid SoC outputs, which CRTCs can drive the output, and the type
  45  * of in-SoC encoder for the output.
  46  */
  47 struct rcar_du_output_routing {
  48         unsigned int possible_crtcs;
  49         unsigned int port;
  50 };
  51
  52 /*
  53  * struct rcar_du_device_info - DU model-specific information
  54  * @gen: device generation (2 or 3)
  55  * @features: device features (RCAR_DU_FEATURE_*)
  56  * @quirks: device quirks (RCAR_DU_QUIRK_*)
  57  * @num_crtcs: total number of CRTCs
  58  * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*)
  59  * @num_lvds: number of internal LVDS encoders
  60  */
  61 struct rcar_du_device_info {
  62         unsigned int gen;
  63         unsigned int features;
  64         unsigned int quirks;
  65         unsigned int num_crtcs;
  66         struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX];
  67         unsigned int num_lvds;
  68         unsigned int dpll_ch;
  69 };
  70
  71 #define RCAR_DU_MAX_CRTCS               4
  72 #define RCAR_DU_MAX_GROUPS              DIV_ROUND_UP(RCAR_DU_MAX_CRTCS, 2)
  73 #define RCAR_DU_MAX_LVDS                2
  74 #define RCAR_DU_MAX_VSPS                4
  75
  76 struct rcar_du_device {
  77         struct device *dev;
  78         const struct rcar_du_device_info *info;
  79
  80         void __iomem *mmio;
  81
  82         struct drm_device *ddev;
  83         struct drm_fbdev_cma *fbdev;
  84         struct drm_atomic_state *suspend_state;
  85
  86         struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS];
  87         unsigned int num_crtcs;
  88
  89         struct rcar_du_group groups[RCAR_DU_MAX_GROUPS];
  90         struct rcar_du_vsp vsps[RCAR_DU_MAX_VSPS];
  91
  92         struct {
  93                 struct drm_property *alpha;
  94                 struct drm_property *colorkey;
  95         } props;
  96
  97         unsigned int dpad0_source;
  98         unsigned int vspd1_sink;
  99
 100         struct rcar_du_lvdsenc *lvds[RCAR_DU_MAX_LVDS];
 101 };
 102
 103 static inline bool rcar_du_has(struct rcar_du_device *rcdu,
 104                                unsigned int feature)
 105 {
 106         return rcdu->info->features & feature;
 107 }
 108
 109 static inline bool rcar_du_needs(struct rcar_du_device *rcdu,
 110                                  unsigned int quirk)
 111 {
 112         return rcdu->info->quirks & quirk;
 113 }
 114
 115 static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg)
 116 {
 117         return ioread32(rcdu->mmio + reg);
 118 }
 119
 120 static inline void rcar_du_write(struct rcar_du_device *rcdu, u32 reg, u32 data)
 121 {
 122         iowrite32(data, rcdu->mmio + reg);
 123 }
 124
 125 #endif /* __RCAR_DU_DRV_H__ */