/*
 * Copyright (C) 2008 Maarten Maathuis.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */

#ifndef __NOUVEAU_CONNECTOR_H__
#define __NOUVEAU_CONNECTOR_H__
#include <nvif/conn.h>
#include <nvif/event.h>

#include <nvhw/class/cl507d.h>
#include <nvhw/class/cl907d.h>
#include <nvhw/drf.h>

#include <drm/display/drm_dp_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_encoder.h>
#include <drm/drm_util.h>

#include "nouveau_crtc.h"
#include "nouveau_encoder.h"

struct nvkm_i2c_port;
struct dcb_output;
struct edid;

#ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT
struct nouveau_backlight {
        struct backlight_device *dev;

        struct drm_edp_backlight_info edp_info;
        bool uses_dpcd : 1;

        int id;
};
#endif

#define nouveau_conn_atom(p)                                                   \
        container_of((p), struct nouveau_conn_atom, state)

struct nouveau_conn_atom {
        struct drm_connector_state state;

        struct {
                /* The enum values specifically defined here match nv50/gf119
                 * hw values, and the code relies on this.
                 */
                enum {
                        DITHERING_MODE_OFF =
                                NVDEF(NV507D, HEAD_SET_DITHER_CONTROL, ENABLE, DISABLE),
                        DITHERING_MODE_ON =
                                NVDEF(NV507D, HEAD_SET_DITHER_CONTROL, ENABLE, ENABLE),
                        DITHERING_MODE_DYNAMIC2X2 = DITHERING_MODE_ON |
                                NVDEF(NV507D, HEAD_SET_DITHER_CONTROL, MODE, DYNAMIC_2X2),
                        DITHERING_MODE_STATIC2X2 = DITHERING_MODE_ON |
                                NVDEF(NV507D, HEAD_SET_DITHER_CONTROL, MODE, STATIC_2X2),
                        DITHERING_MODE_TEMPORAL = DITHERING_MODE_ON |
                                NVDEF(NV907D, HEAD_SET_DITHER_CONTROL, MODE, TEMPORAL),
                        DITHERING_MODE_AUTO
                } mode;
                enum {
                        DITHERING_DEPTH_6BPC =
                                NVDEF(NV507D, HEAD_SET_DITHER_CONTROL, BITS, DITHER_TO_6_BITS),
                        DITHERING_DEPTH_8BPC =
                                NVDEF(NV507D, HEAD_SET_DITHER_CONTROL, BITS, DITHER_TO_8_BITS),
                        DITHERING_DEPTH_AUTO
                } depth;
        } dither;

        struct {
                int mode;       /* DRM_MODE_SCALE_* */
                struct {
                        enum {
                                UNDERSCAN_OFF,
                                UNDERSCAN_ON,
                                UNDERSCAN_AUTO,
                        } mode;
                        u32 hborder;
                        u32 vborder;
                } underscan;
                bool full;
        } scaler;

        struct {
                int color_vibrance;
                int vibrant_hue;
        } procamp;

        union {
                struct {
                        bool dither:1;
                        bool scaler:1;
                        bool procamp:1;
                };
                u8 mask;
        } set;
};

struct nouveau_connector {
        struct drm_connector base;
        enum dcb_connector_type type;
        u8 index;

        struct nvif_conn conn;
        u64 hpd_pending;
        struct nvif_event hpd;
        struct nvif_event irq;
        struct work_struct irq_work;

        struct drm_dp_aux aux;

        /* The fixed DP encoder for this connector, if there is one */
        struct nouveau_encoder *dp_encoder;

        int dithering_mode;
        int scaling_mode;

        struct nouveau_encoder *detected_encoder;
        struct edid *edid;
        struct drm_display_mode *native_mode;
#ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT
        struct nouveau_backlight *backlight;
#endif
        /*
         * Our connector property code expects a nouveau_conn_atom struct
         * even on pre-nv50 where we do not support atomic. This embedded
         * version gets used in the non atomic modeset case.
         */
        struct nouveau_conn_atom properties_state;
};

static inline struct nouveau_connector *nouveau_connector(
                                                struct drm_connector *con)
{
        return container_of(con, struct nouveau_connector, base);
}

static inline bool
nouveau_connector_is_mst(struct drm_connector *connector)
{
        const struct nouveau_encoder *nv_encoder;
        const struct drm_encoder *encoder;

        if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
                return false;

        nv_encoder = find_encoder(connector, DCB_OUTPUT_ANY);
        if (!nv_encoder)
                return false;

        encoder = &nv_encoder->base.base;
        return encoder->encoder_type == DRM_MODE_ENCODER_DPMST;
}

#define nouveau_for_each_non_mst_connector_iter(connector, iter) \
        drm_for_each_connector_iter(connector, iter) \
                for_each_if(!nouveau_connector_is_mst(connector))

static inline struct nouveau_connector *
nouveau_crtc_connector_get(struct nouveau_crtc *nv_crtc)
{
        struct drm_device *dev = nv_crtc->base.dev;
        struct drm_connector *connector;
        struct drm_connector_list_iter conn_iter;
        struct nouveau_connector *nv_connector = NULL;
        struct drm_crtc *crtc = to_drm_crtc(nv_crtc);

        drm_connector_list_iter_begin(dev, &conn_iter);
        nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
                if (connector->encoder && connector->encoder->crtc == crtc) {
                        nv_connector = nouveau_connector(connector);
                        break;
                }
        }
        drm_connector_list_iter_end(&conn_iter);

        return nv_connector;
}

struct drm_connector *
nouveau_connector_create(struct drm_device *, int id);
void nouveau_connector_hpd(struct nouveau_connector *, u64 bits);

extern int nouveau_tv_disable;
extern int nouveau_ignorelid;
extern int nouveau_duallink;
extern int nouveau_hdmimhz;

void nouveau_conn_attach_properties(struct drm_connector *);
void nouveau_conn_reset(struct drm_connector *);
struct drm_connector_state *
nouveau_conn_atomic_duplicate_state(struct drm_connector *);
void nouveau_conn_atomic_destroy_state(struct drm_connector *,
                                       struct drm_connector_state *);
int nouveau_conn_atomic_set_property(struct drm_connector *,
                                     struct drm_connector_state *,
                                     struct drm_property *, u64);
int nouveau_conn_atomic_get_property(struct drm_connector *,
                                     const struct drm_connector_state *,
                                     struct drm_property *, u64 *);
struct drm_display_mode *nouveau_conn_native_mode(struct drm_connector *);
enum drm_mode_status
nouveau_conn_mode_clock_valid(const struct drm_display_mode *,
                              const unsigned min_clock,
                              const unsigned max_clock,
                              unsigned *clock);

#ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT
extern int nouveau_backlight_init(struct drm_connector *);
extern void nouveau_backlight_fini(struct drm_connector *);
extern void nouveau_backlight_ctor(void);
extern void nouveau_backlight_dtor(void);
#else
static inline int
nouveau_backlight_init(struct drm_connector *connector)
{
        return 0;
}

static inline void
nouveau_backlight_fini(struct drm_connector *connector) {
}

static inline void
nouveau_backlight_ctor(void) {
}

static inline void
nouveau_backlight_dtor(void) {
}
#endif

#endif /* __NOUVEAU_CONNECTOR_H__ */