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;
  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#define RCAR_DU_FEATURE_VSP1_SOURCE     (1 << 2)        /* Has inputs from VSP1 */
  33
  34#define RCAR_DU_QUIRK_ALIGN_128B        (1 << 0)        /* Align pitches to 128 bytes */
  35
  36/*
  37 * struct rcar_du_output_routing - Output routing specification
  38 * @possible_crtcs: bitmask of possible CRTCs for 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 */
  45struct rcar_du_output_routing {
  46        unsigned int possible_crtcs;
  47        unsigned int port;
  48};
  49
  50/*
  51 * struct rcar_du_device_info - DU model-specific information
  52 * @gen: device generation (2 or 3)
  53 * @features: device features (RCAR_DU_FEATURE_*)
  54 * @quirks: device quirks (RCAR_DU_QUIRK_*)
  55 * @channels_mask: bit mask of available DU channels
  56 * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*)
  57 * @num_lvds: number of internal LVDS encoders
  58 */
  59struct rcar_du_device_info {
  60        unsigned int gen;
  61        unsigned int features;
  62        unsigned int quirks;
  63        unsigned int channels_mask;
  64        struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX];
  65        unsigned int num_lvds;
  66        unsigned int dpll_ch;
  67};
  68
  69#define RCAR_DU_MAX_CRTCS               4
  70#define RCAR_DU_MAX_GROUPS              DIV_ROUND_UP(RCAR_DU_MAX_CRTCS, 2)
  71#define RCAR_DU_MAX_VSPS                4
  72
  73struct rcar_du_device {
  74        struct device *dev;
  75        const struct rcar_du_device_info *info;
  76
  77        void __iomem *mmio;
  78
  79        struct drm_device *ddev;
  80        struct drm_fbdev_cma *fbdev;
  81        struct drm_atomic_state *suspend_state;
  82
  83        struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS];
  84        unsigned int num_crtcs;
  85
  86        struct rcar_du_group groups[RCAR_DU_MAX_GROUPS];
  87        struct rcar_du_vsp vsps[RCAR_DU_MAX_VSPS];
  88
  89        struct {
  90                struct drm_property *colorkey;
  91        } props;
  92
  93        unsigned int dpad0_source;
  94        unsigned int vspd1_sink;
  95};
  96
  97static inline bool rcar_du_has(struct rcar_du_device *rcdu,
  98                               unsigned int feature)
  99{
 100        return rcdu->info->features & feature;
 101}
 102
 103static inline bool rcar_du_needs(struct rcar_du_device *rcdu,
 104                                 unsigned int quirk)
 105{
 106        return rcdu->info->quirks & quirk;
 107}
 108
 109static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg)
 110{
 111        return ioread32(rcdu->mmio + reg);
 112}
 113
 114static inline void rcar_du_write(struct rcar_du_device *rcdu, u32 reg, u32 data)
 115{
 116        iowrite32(data, rcdu->mmio + reg);
 117}
 118
 119#endif /* __RCAR_DU_DRV_H__ */
 120