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 Renesas 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/platform_data/rcar-du.h>
  19
  20#include "rcar_du_crtc.h"
  21#include "rcar_du_group.h"
  22
  23struct clk;
  24struct device;
  25struct drm_device;
  26struct drm_fbdev_cma;
  27struct rcar_du_device;
  28struct rcar_du_lvdsenc;
  29
  30#define RCAR_DU_FEATURE_CRTC_IRQ_CLOCK  (1 << 0)        /* Per-CRTC IRQ and clock */
  31#define RCAR_DU_FEATURE_DEFR8           (1 << 1)        /* Has DEFR8 register */
  32
  33#define RCAR_DU_QUIRK_ALIGN_128B        (1 << 0)        /* Align pitches to 128 bytes */
  34#define RCAR_DU_QUIRK_LVDS_LANES        (1 << 1)        /* LVDS lanes 1 and 3 inverted */
  35
  36/*
  37 * struct rcar_du_output_routing - Output routing specification
  38 * @possible_crtcs: bitmask of possible CRTCs for the output
  39 * @encoder_type: DRM type of the internal encoder associated with the output
  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 encoder_type;
  48};
  49
  50/*
  51 * struct rcar_du_device_info - DU model-specific information
  52 * @features: device features (RCAR_DU_FEATURE_*)
  53 * @quirks: device quirks (RCAR_DU_QUIRK_*)
  54 * @num_crtcs: total number of CRTCs
  55 * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*)
  56 * @num_lvds: number of internal LVDS encoders
  57 */
  58struct rcar_du_device_info {
  59        unsigned int features;
  60        unsigned int quirks;
  61        unsigned int num_crtcs;
  62        struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX];
  63        unsigned int num_lvds;
  64};
  65
  66struct rcar_du_device {
  67        struct device *dev;
  68        const struct rcar_du_platform_data *pdata;
  69        const struct rcar_du_device_info *info;
  70
  71        void __iomem *mmio;
  72
  73        struct drm_device *ddev;
  74        struct drm_fbdev_cma *fbdev;
  75
  76        struct rcar_du_crtc crtcs[3];
  77        unsigned int num_crtcs;
  78
  79        struct rcar_du_group groups[2];
  80
  81        unsigned int dpad0_source;
  82        struct rcar_du_lvdsenc *lvds[2];
  83};
  84
  85static inline bool rcar_du_has(struct rcar_du_device *rcdu,
  86                               unsigned int feature)
  87{
  88        return rcdu->info->features & feature;
  89}
  90
  91static inline bool rcar_du_needs(struct rcar_du_device *rcdu,
  92                                 unsigned int quirk)
  93{
  94        return rcdu->info->quirks & quirk;
  95}
  96
  97static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg)
  98{
  99        return ioread32(rcdu->mmio + reg);
 100}
 101
 102static inline void rcar_du_write(struct rcar_du_device *rcdu, u32 reg, u32 data)
 103{
 104        iowrite32(data, rcdu->mmio + reg);
 105}
 106
 107#endif /* __RCAR_DU_DRV_H__ */
 108