/* SPDX-License-Identifier: MIT */
/*
 * Copyright (c) 2005 ASPEED Technology Inc.
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of the authors not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  The authors makes no representations
 * about the suitability of this software for any purpose.  It is provided
 * "as is" without express or implied warranty.
 *
 * THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */
/* Ported from xf86-video-ast driver */

#ifndef AST_VBIOS_H
#define AST_VBIOS_H

#include <linux/types.h>

struct ast_device;
struct drm_display_mode;

#define Charx8Dot               0x00000001
#define HalfDCLK                0x00000002
#define DoubleScanMode          0x00000004
#define LineCompareOff          0x00000008
#define HBorder                 0x00000020
#define VBorder                 0x00000010
#define WideScreenMode          0x00000100
#define NewModeInfo             0x00000200
#define NHSync                  0x00000400
#define PHSync                  0x00000800
#define NVSync                  0x00001000
#define PVSync                  0x00002000
#define SyncPP                  (PVSync | PHSync)
#define SyncPN                  (PVSync | NHSync)
#define SyncNP                  (NVSync | PHSync)
#define SyncNN                  (NVSync | NHSync)
#define AST2500PreCatchCRT              0x00004000

/* DCLK Index */
#define VCLK25_175              0x00
#define VCLK28_322              0x01
#define VCLK31_5                0x02
#define VCLK36                  0x03
#define VCLK40                  0x04
#define VCLK49_5                0x05
#define VCLK50                  0x06
#define VCLK56_25               0x07
#define VCLK65                  0x08
#define VCLK75                  0x09
#define VCLK78_75               0x0a
#define VCLK94_5                0x0b
#define VCLK108                 0x0c
#define VCLK135                 0x0d
#define VCLK157_5               0x0e
#define VCLK162                 0x0f
/* #define VCLK193_25           0x10 */
#define VCLK154                 0x10
#define VCLK83_5                0x11
#define VCLK106_5               0x12
#define VCLK146_25              0x13
#define VCLK148_5               0x14
#define VCLK71                  0x15
#define VCLK88_75               0x16
#define VCLK119                 0x17
#define VCLK85_5                0x18
#define VCLK97_75               0x19
#define VCLK118_25              0x1a

struct ast_vbios_enhtable {
        u32 ht;
        u32 hde;
        u32 hfp;
        u32 hsync;
        u32 vt;
        u32 vde;
        u32 vfp;
        u32 vsync;
        u32 dclk_index;
        u32 flags;
        u32 refresh_rate;
        u32 refresh_rate_index;
        u32 mode_id;
};

#define AST_VBIOS_INVALID_MODE \
        {0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u}

static inline bool ast_vbios_mode_is_valid(const struct ast_vbios_enhtable *vmode)
{
        return vmode->ht && vmode->vt && vmode->refresh_rate;
}

const struct ast_vbios_enhtable *ast_vbios_find_mode(const struct ast_device *ast,
                                                     const struct drm_display_mode *mode);

#endif