/*-
 * Copyright 1992-2015 Michal Meloun
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */
#ifndef _TEGRA_DRM_H_
#define _TEGRA_DRM_H_

#include <dev/gpio/gpiobusvar.h>

struct tegra_bo {
        struct drm_gem_object   gem_obj;
        /* mapped memory buffer */
        vm_paddr_t              pbase;
        vm_offset_t             vbase;
        size_t                  npages;
        vm_page_t               *m;
        vm_object_t             cdev_pager;
};

struct tegra_plane {
        struct drm_plane        drm_plane;
        int                     index;          /* Window index */
};

struct tegra_fb {
        struct drm_framebuffer  drm_fb;
        struct drm_fb_helper    fb_helper;
        struct tegra_bo         **planes;       /* Attached planes */
        int                     nplanes;

        /* Surface and display geometry */
        bool                    block_linear;   /* Surface_kind */
        uint32_t                block_height;
        int                     rotation;       /* In degrees */
        bool                    flip_x;         /* Inverted X-axis */
        bool                    flip_y;         /* Inverted Y-axis */
};

struct tegra_crtc {
        struct drm_crtc         drm_crtc;
        device_t                dev;
        int                     nvidia_head;
        vm_paddr_t              cursor_pbase;   /* Cursor buffer */
        void                    *cursor_vbase;
};

struct tegra_drm_encoder {
        device_t                dev;

        void                    *panel;         /* XXX For LVDS panel */
        device_t                ddc;
        struct edid             *edid;

        gpio_pin_t              gpio_hpd;

        struct drm_encoder      encoder;
        struct drm_connector    connector;
        int                     (*setup_clock)(struct tegra_drm_encoder *output,
                                    clk_t clk, uint64_t pclk);
};

struct tegra_drm {
        struct drm_device       drm_dev;
        struct tegra_fb         *fb;            /* Prime framebuffer */
        int                     pitch_align;
};

/* tegra_drm_subr.c */
int tegra_drm_encoder_attach(struct tegra_drm_encoder *output, phandle_t node);
int tegra_drm_encoder_init(struct tegra_drm_encoder *output,
    struct tegra_drm *drm);
int tegra_drm_encoder_exit(struct tegra_drm_encoder *output,
    struct tegra_drm *drm);
enum drm_connector_status tegra_drm_connector_detect(
    struct drm_connector *connector, bool force);
int tegra_drm_connector_get_modes(struct drm_connector *connector);
struct drm_encoder *tegra_drm_connector_best_encoder(
    struct drm_connector *connector);

/* tegra_dc.c */
void tegra_dc_cancel_page_flip(struct drm_crtc *drm_crtc,
    struct drm_file *file);
void tegra_dc_enable_vblank(struct drm_crtc *drm_crtc);
void tegra_dc_disable_vblank(struct drm_crtc *drm_crtc);
int tegra_dc_get_pipe(struct drm_crtc *drm_crtc);

/* tegra_fb.c */
struct fb_info *tegra_drm_fb_getinfo(struct drm_device *drm);
struct tegra_bo *tegra_fb_get_plane(struct tegra_fb *fb, int idx);
int tegra_drm_fb_create(struct drm_device *drm, struct drm_file *file,
    struct drm_mode_fb_cmd2 *cmd, struct drm_framebuffer **fb_res);
int tegra_drm_fb_init(struct drm_device *drm);
void tegra_drm_fb_destroy(struct drm_device *drm);

/* tegra_bo.c */
struct tegra_bo;
int tegra_bo_create(struct drm_device *drm, size_t size,
    struct tegra_bo **res_bo);
void tegra_bo_driver_register(struct drm_driver *drm_drv);

#endif /* _TEGRA_DRM_H_ */