drivers/gpu/drm/sti/sti_layer.h

   1 /*
   2  * Copyright (C) STMicroelectronics SA 2014
   3  * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
   4  *          Fabien Dessenne <fabien.dessenne@st.com>
   5  *          for STMicroelectronics.
   6  * License terms:  GNU General Public License (GPL), version 2
   7  */
   8
   9 #ifndef _STI_LAYER_H_
  10 #define _STI_LAYER_H_
  11
  12 #include <drm/drmP.h>
  13
  14 #define to_sti_layer(x) container_of(x, struct sti_layer, plane)
  15
  16 #define STI_LAYER_TYPE_SHIFT 8
  17 #define STI_LAYER_TYPE_MASK (~((1<<STI_LAYER_TYPE_SHIFT)-1))
  18
  19 struct sti_layer;
  20
  21 enum sti_layer_type {
  22         STI_GDP = 1 << STI_LAYER_TYPE_SHIFT,
  23         STI_VID = 2 << STI_LAYER_TYPE_SHIFT,
  24         STI_CUR = 3 << STI_LAYER_TYPE_SHIFT,
  25         STI_BCK = 4 << STI_LAYER_TYPE_SHIFT,
  26         STI_VDP = 5 << STI_LAYER_TYPE_SHIFT
  27 };
  28
  29 enum sti_layer_id_of_type {
  30         STI_ID_0 = 0,
  31         STI_ID_1 = 1,
  32         STI_ID_2 = 2,
  33         STI_ID_3 = 3
  34 };
  35
  36 enum sti_layer_desc {
  37         STI_GDP_0       = STI_GDP | STI_ID_0,
  38         STI_GDP_1       = STI_GDP | STI_ID_1,
  39         STI_GDP_2       = STI_GDP | STI_ID_2,
  40         STI_GDP_3       = STI_GDP | STI_ID_3,
  41         STI_VID_0       = STI_VID | STI_ID_0,
  42         STI_VID_1       = STI_VID | STI_ID_1,
  43         STI_HQVDP_0     = STI_VDP | STI_ID_0,
  44         STI_CURSOR      = STI_CUR,
  45         STI_BACK        = STI_BCK
  46 };
  47
  48 /**
  49  * STI layer functions structure
  50  *
  51  * @get_formats:        get layer supported formats
  52  * @get_nb_formats:     get number of format supported
  53  * @init:               initialize the layer
  54  * @prepare:            prepare layer before rendering
  55  * @commit:             set layer for rendering
  56  * @disable:            disable layer
  57  */
  58 struct sti_layer_funcs {
  59         const uint32_t* (*get_formats)(struct sti_layer *layer);
  60         unsigned int (*get_nb_formats)(struct sti_layer *layer);
  61         void (*init)(struct sti_layer *layer);
  62         int (*prepare)(struct sti_layer *layer, bool first_prepare);
  63         int (*commit)(struct sti_layer *layer);
  64         int (*disable)(struct sti_layer *layer);
  65 };
  66
  67 /**
  68  * STI layer structure
  69  *
  70  * @plane:              drm plane it is bound to (if any)
  71  * @fb:                 drm fb it is bound to
  72  * @crtc:               crtc it is bound to
  73  * @mode:               display mode
  74  * @desc:               layer type & id
  75  * @device:             driver device
  76  * @regs:               layer registers
  77  * @ops:                layer functions
  78  * @zorder:             layer z-order
  79  * @mixer_id:           id of the mixer used to display the layer
  80  * @enabled:            to know if the layer is active or not
  81  * @src_x src_y:        coordinates of the input (fb) area
  82  * @src_w src_h:        size of the input (fb) area
  83  * @dst_x dst_y:        coordinates of the output (crtc) area
  84  * @dst_w dst_h:        size of the output (crtc) area
  85  * @format:             format
  86  * @pitches:            pitch of 'planes' (eg: Y, U, V)
  87  * @offsets:            offset of 'planes'
  88  * @vaddr:              virtual address of the input buffer
  89  * @paddr:              physical address of the input buffer
  90  */
  91 struct sti_layer {
  92         struct drm_plane plane;
  93         struct drm_framebuffer *fb;
  94         struct drm_crtc *crtc;
  95         struct drm_display_mode *mode;
  96         enum sti_layer_desc desc;
  97         struct device *dev;
  98         void __iomem *regs;
  99         const struct sti_layer_funcs *ops;
 100         int zorder;
 101         int mixer_id;
 102         bool enabled;
 103         int src_x, src_y;
 104         int src_w, src_h;
 105         int dst_x, dst_y;
 106         int dst_w, dst_h;
 107         uint32_t format;
 108         unsigned int pitches[4];
 109         unsigned int offsets[4];
 110         void *vaddr;
 111         dma_addr_t paddr;
 112 };
 113
 114 struct sti_layer *sti_layer_create(struct device *dev, int desc,
 115                         void __iomem *baseaddr);
 116 int sti_layer_prepare(struct sti_layer *layer,
 117                         struct drm_crtc *crtc,
 118                         struct drm_framebuffer *fb,
 119                         struct drm_display_mode *mode,
 120                         int mixer_id,
 121                         int dest_x, int dest_y,
 122                         int dest_w, int dest_h,
 123                         int src_x, int src_y,
 124                         int src_w, int src_h);
 125 int sti_layer_commit(struct sti_layer *layer);
 126 int sti_layer_disable(struct sti_layer *layer);
 127 const uint32_t *sti_layer_get_formats(struct sti_layer *layer);
 128 unsigned int sti_layer_get_nb_formats(struct sti_layer *layer);
 129 const char *sti_layer_to_str(struct sti_layer *layer);
 130
 131 #endif