LXR linux/drivers/gpu/drm/sti/sti

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Copyright (C) STMicroelectronics SA 2014
   4 * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
   5 *          Fabien Dessenne <fabien.dessenne@st.com>
   6 *          for STMicroelectronics.
   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
  23enum 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
  31struct 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
  44struct 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: array of vtgs
  64 * @vtg_vblank_nb: array of callbacks for VTG VSYNC notification
  65 */
  66struct sti_compositor {
  67        struct device *dev;
  68        void __iomem *regs;
  69        struct sti_compositor_data data;
  70        struct clk *clk_compo_main;
  71        struct clk *clk_compo_aux;
  72        struct clk *clk_pix_main;
  73        struct clk *clk_pix_aux;
  74        struct reset_control *rst_main;
  75        struct reset_control *rst_aux;
  76        struct sti_mixer *mixer[STI_MAX_MIXER];
  77        struct sti_vid *vid[STI_MAX_VID];
  78        struct sti_vtg *vtg[STI_MAX_MIXER];
  79        struct notifier_block vtg_vblank_nb[STI_MAX_MIXER];
  80};
  81
  82void sti_compositor_debugfs_init(struct sti_compositor *compo,
  83                                 struct drm_minor *minor);
  84
  85#endif
  86