LXR linux/drivers/gpu/drm/armada/armada

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Copyright (C) 2012 Russell King
   4 */
   5#ifndef ARMADA_DRM_H
   6#define ARMADA_DRM_H
   7
   8#include <linux/kfifo.h>
   9#include <linux/io.h>
  10#include <linux/workqueue.h>
  11
  12#include <drm/drm_device.h>
  13#include <drm/drm_mm.h>
  14
  15struct armada_crtc;
  16struct armada_gem_object;
  17struct clk;
  18struct drm_display_mode;
  19struct drm_fb_helper;
  20
  21static inline void
  22armada_updatel(uint32_t val, uint32_t mask, void __iomem *ptr)
  23{
  24        uint32_t ov, v;
  25
  26        ov = v = readl_relaxed(ptr);
  27        v = (v & ~mask) | val;
  28        if (ov != v)
  29                writel_relaxed(v, ptr);
  30}
  31
  32static inline uint32_t armada_pitch(uint32_t width, uint32_t bpp)
  33{
  34        uint32_t pitch = bpp != 4 ? width * ((bpp + 7) / 8) : width / 2;
  35
  36        /* 88AP510 spec recommends pitch be a multiple of 128 */
  37        return ALIGN(pitch, 128);
  38}
  39
  40
  41struct armada_private;
  42
  43struct armada_variant {
  44        bool has_spu_adv_reg;
  45        int (*init)(struct armada_crtc *, struct device *);
  46        int (*compute_clock)(struct armada_crtc *,
  47                             const struct drm_display_mode *,
  48                             uint32_t *);
  49        void (*disable)(struct armada_crtc *);
  50        void (*enable)(struct armada_crtc *, const struct drm_display_mode *);
  51};
  52
  53/* Variant ops */
  54extern const struct armada_variant armada510_ops;
  55
  56struct armada_private {
  57        struct drm_device       drm;
  58        struct drm_fb_helper    *fbdev;
  59        struct armada_crtc      *dcrtc[2];
  60        struct drm_mm           linear; /* protected by linear_lock */
  61        struct mutex            linear_lock;
  62        struct drm_property     *colorkey_prop;
  63        struct drm_property     *colorkey_min_prop;
  64        struct drm_property     *colorkey_max_prop;
  65        struct drm_property     *colorkey_val_prop;
  66        struct drm_property     *colorkey_alpha_prop;
  67        struct drm_property     *colorkey_mode_prop;
  68        struct drm_property     *brightness_prop;
  69        struct drm_property     *contrast_prop;
  70        struct drm_property     *saturation_prop;
  71#ifdef CONFIG_DEBUG_FS
  72        struct dentry           *de;
  73#endif
  74};
  75
  76#define drm_to_armada_dev(dev) container_of(dev, struct armada_private, drm)
  77
  78int armada_fbdev_init(struct drm_device *);
  79void armada_fbdev_fini(struct drm_device *);
  80
  81int armada_overlay_plane_create(struct drm_device *, unsigned long);
  82
  83void armada_drm_crtc_debugfs_init(struct armada_crtc *dcrtc);
  84int armada_drm_debugfs_init(struct drm_minor *);
  85
  86#endif
  87