drivers/gpu/drm/sti/sti_compositor.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_COMPOSITOR_H_
  10 #define _STI_COMPOSITOR_H_
  11
  12 #include <linux/clk.h>
  13 #include <linux/kernel.h>
  14
  15 #include "sti_mixer.h"
  16 #include "sti_plane.h"
  17
  18 #define WAIT_NEXT_VSYNC_MS      50 /*ms*/
  19
  20 #define STI_MAX_MIXER 2
  21 #define STI_MAX_VID   1
  22
  23 enum sti_compositor_subdev_type {
  24         STI_MIXER_MAIN_SUBDEV,
  25         STI_MIXER_AUX_SUBDEV,
  26         STI_GPD_SUBDEV,
  27         STI_VID_SUBDEV,
  28         STI_CURSOR_SUBDEV,
  29 };
  30
  31 struct sti_compositor_subdev_descriptor {
  32         enum sti_compositor_subdev_type type;
  33         int id;
  34         unsigned int offset;
  35 };
  36
  37 /**
  38  * STI Compositor data structure
  39  *
  40  * @nb_subdev: number of subdevices supported by the compositor
  41  * @subdev_desc: subdev list description
  42  */
  43 #define MAX_SUBDEV 9
  44 struct sti_compositor_data {
  45         unsigned int nb_subdev;
  46         struct sti_compositor_subdev_descriptor subdev_desc[MAX_SUBDEV];
  47 };
  48
  49 /**
  50  * STI Compositor structure
  51  *
  52  * @dev: driver device
  53  * @regs: registers (main)
  54  * @data: device data
  55  * @clk_compo_main: clock for main compo
  56  * @clk_compo_aux: clock for aux compo
  57  * @clk_pix_main: pixel clock for main path
  58  * @clk_pix_aux: pixel clock for aux path
  59  * @rst_main: reset control of the main path
  60  * @rst_aux: reset control of the aux path
  61  * @mixer: array of mixers
  62  * @vid: array of vids
  63  * @vtg_main: vtg for main data path
  64  * @vtg_aux: vtg for auxillary data path
  65  * @vtg_vblank_nb: callback for VTG VSYNC notification
  66  */
  67 struct sti_compositor {
  68         struct device *dev;
  69         void __iomem *regs;
  70         struct sti_compositor_data data;
  71         struct clk *clk_compo_main;
  72         struct clk *clk_compo_aux;
  73         struct clk *clk_pix_main;
  74         struct clk *clk_pix_aux;
  75         struct reset_control *rst_main;
  76         struct reset_control *rst_aux;
  77         struct sti_mixer *mixer[STI_MAX_MIXER];
  78         struct sti_vid *vid[STI_MAX_VID];
  79         struct sti_vtg *vtg_main;
  80         struct sti_vtg *vtg_aux;
  81         struct notifier_block vtg_vblank_nb;
  82 };
  83
  84 int sti_compositor_debufs_init(struct sti_compositor *compo,
  85                                struct drm_minor *minor);
  86
  87 #endif