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