drivers/gpu/drm/armada/armada_drm.h

   1 /*
   2  * Copyright (C) 2012 Russell King
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  */
   8 #ifndef ARMADA_DRM_H
   9 #define ARMADA_DRM_H
  10
  11 #include <linux/kfifo.h>
  12 #include <linux/io.h>
  13 #include <linux/workqueue.h>
  14 #include <drm/drmP.h>
  15
  16 struct armada_crtc;
  17 struct armada_gem_object;
  18 struct clk;
  19 struct drm_fb_helper;
  20
  21 static inline void
  22 armada_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
  32 static 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 struct armada_vbl_event {
  41         struct list_head        node;
  42         void                    *data;
  43         void                    (*fn)(struct armada_crtc *, void *);
  44 };
  45 void armada_drm_vbl_event_add(struct armada_crtc *,
  46         struct armada_vbl_event *);
  47 void armada_drm_vbl_event_remove(struct armada_crtc *,
  48         struct armada_vbl_event *);
  49 #define armada_drm_vbl_event_init(_e, _f, _d) do {      \
  50         struct armada_vbl_event *__e = _e;              \
  51         INIT_LIST_HEAD(&__e->node);                     \
  52         __e->data = _d;                                 \
  53         __e->fn = _f;                                   \
  54 } while (0)
  55
  56
  57 struct armada_private;
  58
  59 struct armada_variant {
  60         bool has_spu_adv_reg;
  61         uint32_t spu_adv_reg;
  62         int (*init)(struct armada_crtc *, struct device *);
  63         int (*compute_clock)(struct armada_crtc *,
  64                              const struct drm_display_mode *,
  65                              uint32_t *);
  66 };
  67
  68 /* Variant ops */
  69 extern const struct armada_variant armada510_ops;
  70
  71 struct armada_private {
  72         struct work_struct      fb_unref_work;
  73         DECLARE_KFIFO(fb_unref, struct drm_framebuffer *, 8);
  74         struct drm_fb_helper    *fbdev;
  75         struct armada_crtc      *dcrtc[2];
  76         struct drm_mm           linear;
  77         struct drm_property     *csc_yuv_prop;
  78         struct drm_property     *csc_rgb_prop;
  79         struct drm_property     *colorkey_prop;
  80         struct drm_property     *colorkey_min_prop;
  81         struct drm_property     *colorkey_max_prop;
  82         struct drm_property     *colorkey_val_prop;
  83         struct drm_property     *colorkey_alpha_prop;
  84         struct drm_property     *colorkey_mode_prop;
  85         struct drm_property     *brightness_prop;
  86         struct drm_property     *contrast_prop;
  87         struct drm_property     *saturation_prop;
  88 #ifdef CONFIG_DEBUG_FS
  89         struct dentry           *de;
  90 #endif
  91 };
  92
  93 void __armada_drm_queue_unref_work(struct drm_device *,
  94         struct drm_framebuffer *);
  95 void armada_drm_queue_unref_work(struct drm_device *,
  96         struct drm_framebuffer *);
  97
  98 extern const struct drm_mode_config_funcs armada_drm_mode_config_funcs;
  99
 100 int armada_fbdev_init(struct drm_device *);
 101 void armada_fbdev_lastclose(struct drm_device *);
 102 void armada_fbdev_fini(struct drm_device *);
 103
 104 int armada_overlay_plane_create(struct drm_device *, unsigned long);
 105
 106 int armada_drm_debugfs_init(struct drm_minor *);
 107 void armada_drm_debugfs_cleanup(struct drm_minor *);
 108
 109 #endif