LXR linux/drivers/gpu/drm/rcar-du/rcar_du

   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
  24struct clk;
  25struct device;
  26struct drm_device;
  27struct drm_fbdev_cma;
  28struct rcar_du_device;
  29struct 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 * @encoder_type: DRM type of the internal encoder associated with the output
  42 * @port: device tree port number corresponding to this output route
  43 *
  44 * The DU has 5 possible outputs (DPAD0/1, LVDS0/1, TCON). Output routing data
  45 * specify the valid SoC outputs, which CRTCs can drive the output, and the type
  46 * of in-SoC encoder for the output.
  47 */
  48struct rcar_du_output_routing {
  49        unsigned int possible_crtcs;
  50        unsigned int encoder_type;
  51        unsigned int port;
  52};
  53
  54/*
  55 * struct rcar_du_device_info - DU model-specific information
  56 * @gen: device generation (2 or 3)
  57 * @features: device features (RCAR_DU_FEATURE_*)
  58 * @quirks: device quirks (RCAR_DU_QUIRK_*)
  59 * @num_crtcs: total number of CRTCs
  60 * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*)
  61 * @num_lvds: number of internal LVDS encoders
  62 */
  63struct rcar_du_device_info {
  64        unsigned int gen;
  65        unsigned int features;
  66        unsigned int quirks;
  67        unsigned int num_crtcs;
  68        struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX];
  69        unsigned int num_lvds;
  70};
  71
  72#define RCAR_DU_MAX_CRTCS               4
  73#define RCAR_DU_MAX_GROUPS              DIV_ROUND_UP(RCAR_DU_MAX_CRTCS, 2)
  74#define RCAR_DU_MAX_LVDS                2
  75#define RCAR_DU_MAX_VSPS                4
  76
  77struct rcar_du_device {
  78        struct device *dev;
  79        const struct rcar_du_device_info *info;
  80
  81        void __iomem *mmio;
  82
  83        struct drm_device *ddev;
  84        struct drm_fbdev_cma *fbdev;
  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        struct {
 103                wait_queue_head_t wait;
 104                u32 pending;
 105        } commit;
 106};
 107
 108static inline bool rcar_du_has(struct rcar_du_device *rcdu,
 109                               unsigned int feature)
 110{
 111        return rcdu->info->features & feature;
 112}
 113
 114static inline bool rcar_du_needs(struct rcar_du_device *rcdu,
 115                                 unsigned int quirk)
 116{
 117        return rcdu->info->quirks & quirk;
 118}
 119
 120static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg)
 121{
 122        return ioread32(rcdu->mmio + reg);
 123}
 124
 125static inline void rcar_du_write(struct rcar_du_device *rcdu, u32 reg, u32 data)
 126{
 127        iowrite32(data, rcdu->mmio + reg);
 128}
 129
 130#endif /* __RCAR_DU_DRV_H__ */
 131