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 * @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 */
  47struct 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 */
  61struct 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
  76struct 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
  85        struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS];
  86        unsigned int num_crtcs;
  87
  88        struct rcar_du_group groups[RCAR_DU_MAX_GROUPS];
  89        struct rcar_du_vsp vsps[RCAR_DU_MAX_VSPS];
  90
  91        struct {
  92                struct drm_property *alpha;
  93                struct drm_property *colorkey;
  94        } props;
  95
  96        unsigned int dpad0_source;
  97        unsigned int vspd1_sink;
  98
  99        struct rcar_du_lvdsenc *lvds[RCAR_DU_MAX_LVDS];
 100};
 101
 102static inline bool rcar_du_has(struct rcar_du_device *rcdu,
 103                               unsigned int feature)
 104{
 105        return rcdu->info->features & feature;
 106}
 107
 108static inline bool rcar_du_needs(struct rcar_du_device *rcdu,
 109                                 unsigned int quirk)
 110{
 111        return rcdu->info->quirks & quirk;
 112}
 113
 114static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg)
 115{
 116        return ioread32(rcdu->mmio + reg);
 117}
 118
 119static inline void rcar_du_write(struct rcar_du_device *rcdu, u32 reg, u32 data)
 120{
 121        iowrite32(data, rcdu->mmio + reg);
 122}
 123
 124#endif /* __RCAR_DU_DRV_H__ */
 125