/*
 * Copyright (c) 2006 Dave Airlie <airlied@linux.ie>
 * Copyright (c) 2007-2008 Intel Corporation
 *   Jesse Barnes <jesse.barnes@intel.com>
 *
 * 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 AUTHORS OR COPYRIGHT HOLDERS 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 __INTEL_DRV_H__
#define __INTEL_DRV_H__

#include <linux/async.h>
#include <linux/i2c.h>
#include <linux/hdmi.h>
#include <drm/i915_drm.h>
#include "i915_drv.h"
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_dp_mst_helper.h>
#include <drm/drm_rect.h>

#define DIV_ROUND_CLOSEST_ULL(ll, d)    \
({ unsigned long long _tmp = (ll)+(d)/2; do_div(_tmp, d); _tmp; })

/**
 * _wait_for - magic (register) wait macro
 *
 * Does the right thing for modeset paths when run under kdgb or similar atomic
 * contexts. Note that it's important that we check the condition again after
 * having timed out, since the timeout could be due to preemption or similar and
 * we've never had a chance to check the condition before the timeout.
 */
#define _wait_for(COND, MS, W) ({ \
        unsigned long timeout__ = jiffies + msecs_to_jiffies(MS) + 1;   \
        int ret__ = 0;                                                  \
        while (!(COND)) {                                               \
                if (time_after(jiffies, timeout__)) {                   \
                        if (!(COND))                                    \
                                ret__ = -ETIMEDOUT;                     \
                        break;                                          \
                }                                                       \
                if (W && drm_can_sleep())  {                            \
                        msleep(W);                                      \
                } else {                                                \
                        cpu_relax();                                    \
                }                                                       \
        }                                                               \
        ret__;                                                          \
})

#define wait_for(COND, MS) _wait_for(COND, MS, 1)
#define wait_for_atomic(COND, MS) _wait_for(COND, MS, 0)
#define wait_for_atomic_us(COND, US) _wait_for((COND), \
                                               DIV_ROUND_UP((US), 1000), 0)

#define KHz(x) (1000 * (x))
#define MHz(x) KHz(1000 * (x))

/*
 * Display related stuff
 */

/* store information about an Ixxx DVO */
/* The i830->i865 use multiple DVOs with multiple i2cs */
/* the i915, i945 have a single sDVO i2c bus - which is different */
#define MAX_OUTPUTS 6
/* maximum connectors per crtcs in the mode set */

/* Maximum cursor sizes */
#define GEN2_CURSOR_WIDTH 64
#define GEN2_CURSOR_HEIGHT 64
#define MAX_CURSOR_WIDTH 256
#define MAX_CURSOR_HEIGHT 256

#define INTEL_I2C_BUS_DVO 1
#define INTEL_I2C_BUS_SDVO 2

/* these are outputs from the chip - integrated only
   external chips are via DVO or SDVO output */
enum intel_output_type {
        INTEL_OUTPUT_UNUSED = 0,
        INTEL_OUTPUT_ANALOG = 1,
        INTEL_OUTPUT_DVO = 2,
        INTEL_OUTPUT_SDVO = 3,
        INTEL_OUTPUT_LVDS = 4,
        INTEL_OUTPUT_TVOUT = 5,
        INTEL_OUTPUT_HDMI = 6,
        INTEL_OUTPUT_DISPLAYPORT = 7,
        INTEL_OUTPUT_EDP = 8,
        INTEL_OUTPUT_DSI = 9,
        INTEL_OUTPUT_UNKNOWN = 10,
        INTEL_OUTPUT_DP_MST = 11,
};

#define INTEL_DVO_CHIP_NONE 0
#define INTEL_DVO_CHIP_LVDS 1
#define INTEL_DVO_CHIP_TMDS 2
#define INTEL_DVO_CHIP_TVOUT 4

#define INTEL_DSI_VIDEO_MODE    0
#define INTEL_DSI_COMMAND_MODE  1

struct intel_framebuffer {
        struct drm_framebuffer base;
        struct drm_i915_gem_object *obj;
};

struct intel_fbdev {
        struct drm_fb_helper helper;
        struct intel_framebuffer *fb;
        struct list_head fbdev_list;
        struct drm_display_mode *our_mode;
        int preferred_bpp;
};

struct intel_encoder {
        struct drm_encoder base;
        /*
         * The new crtc this encoder will be driven from. Only differs from
         * base->crtc while a modeset is in progress.
         */
        struct intel_crtc *new_crtc;

        enum intel_output_type type;
        unsigned int cloneable;
        bool connectors_active;
        void (*hot_plug)(struct intel_encoder *);
        bool (*compute_config)(struct intel_encoder *,
                               struct intel_crtc_state *);
        void (*pre_pll_enable)(struct intel_encoder *);
        void (*pre_enable)(struct intel_encoder *);
        void (*enable)(struct intel_encoder *);
        void (*mode_set)(struct intel_encoder *intel_encoder);
        void (*disable)(struct intel_encoder *);
        void (*post_disable)(struct intel_encoder *);
        /* Read out the current hw state of this connector, returning true if
         * the encoder is active. If the encoder is enabled it also set the pipe
         * it is connected to in the pipe parameter. */
        bool (*get_hw_state)(struct intel_encoder *, enum pipe *pipe);
        /* Reconstructs the equivalent mode flags for the current hardware
         * state. This must be called _after_ display->get_pipe_config has
         * pre-filled the pipe config. Note that intel_encoder->base.crtc must
         * be set correctly before calling this function. */
        void (*get_config)(struct intel_encoder *,
                           struct intel_crtc_state *pipe_config);
        /*
         * Called during system suspend after all pending requests for the
         * encoder are flushed (for example for DP AUX transactions) and
         * device interrupts are disabled.
         */
        void (*suspend)(struct intel_encoder *);
        int crtc_mask;
        enum hpd_pin hpd_pin;
};

struct intel_panel {
        struct drm_display_mode *fixed_mode;
        struct drm_display_mode *downclock_mode;
        int fitting_mode;

        /* backlight */
        struct {
                bool present;
                u32 level;
                u32 min;
                u32 max;
                bool enabled;
                bool combination_mode;  /* gen 2/4 only */
                bool active_low_pwm;
                struct backlight_device *device;
        } backlight;

        void (*backlight_power)(struct intel_connector *, bool enable);
};

struct intel_connector {
        struct drm_connector base;
        /*
         * The fixed encoder this connector is connected to.
         */
        struct intel_encoder *encoder;

        /*
         * The new encoder this connector will be driven. Only differs from
         * encoder while a modeset is in progress.
         */
        struct intel_encoder *new_encoder;

        /* Reads out the current hw, returning true if the connector is enabled
         * and active (i.e. dpms ON state). */
        bool (*get_hw_state)(struct intel_connector *);

        /*
         * Removes all interfaces through which the connector is accessible
         * - like sysfs, debugfs entries -, so that no new operations can be
         * started on the connector. Also makes sure all currently pending
         * operations finish before returing.
         */
        void (*unregister)(struct intel_connector *);

        /* Panel info for eDP and LVDS */
        struct intel_panel panel;

        /* Cached EDID for eDP and LVDS. May hold ERR_PTR for invalid EDID. */
        struct edid *edid;
        struct edid *detect_edid;

        /* since POLL and HPD connectors may use the same HPD line keep the native
           state of connector->polled in case hotplug storm detection changes it */
        u8 polled;

        void *port; /* store this opaque as its illegal to dereference it */

        struct intel_dp *mst_port;
};

typedef struct dpll {
        /* given values */
        int n;
        int m1, m2;
        int p1, p2;
        /* derived values */
        int     dot;
        int     vco;
        int     m;
        int     p;
} intel_clock_t;

struct intel_plane_state {
        struct drm_plane_state base;
        struct drm_rect src;
        struct drm_rect dst;
        struct drm_rect clip;
        bool visible;

        /*
         * used only for sprite planes to determine when to implicitly
         * enable/disable the primary plane
         */
        bool hides_primary;
};

struct intel_initial_plane_config {
        unsigned int tiling;
        int size;
        u32 base;
};

struct intel_crtc_state {
        struct drm_crtc_state base;

        /**
         * quirks - bitfield with hw state readout quirks
         *
         * For various reasons the hw state readout code might not be able to
         * completely faithfully read out the current state. These cases are
         * tracked with quirk flags so that fastboot and state checker can act
         * accordingly.
         */
#define PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS       (1<<0) /* unreliable sync mode.flags */
#define PIPE_CONFIG_QUIRK_INHERITED_MODE        (1<<1) /* mode inherited from firmware */
        unsigned long quirks;

        /* Pipe source size (ie. panel fitter input size)
         * All planes will be positioned inside this space,
         * and get clipped at the edges. */
        int pipe_src_w, pipe_src_h;

        /* Whether to set up the PCH/FDI. Note that we never allow sharing
         * between pch encoders and cpu encoders. */
        bool has_pch_encoder;

        /* Are we sending infoframes on the attached port */
        bool has_infoframe;

        /* CPU Transcoder for the pipe. Currently this can only differ from the
         * pipe on Haswell (where we have a special eDP transcoder). */
        enum transcoder cpu_transcoder;

        /*
         * Use reduced/limited/broadcast rbg range, compressing from the full
         * range fed into the crtcs.
         */
        bool limited_color_range;

        /* DP has a bunch of special case unfortunately, so mark the pipe
         * accordingly. */
        bool has_dp_encoder;

        /* Whether we should send NULL infoframes. Required for audio. */
        bool has_hdmi_sink;

        /* Audio enabled on this pipe. Only valid if either has_hdmi_sink or
         * has_dp_encoder is set. */
        bool has_audio;

        /*
         * Enable dithering, used when the selected pipe bpp doesn't match the
         * plane bpp.
         */
        bool dither;

        /* Controls for the clock computation, to override various stages. */
        bool clock_set;

        /* SDVO TV has a bunch of special case. To make multifunction encoders
         * work correctly, we need to track this at runtime.*/
        bool sdvo_tv_clock;

        /*
         * crtc bandwidth limit, don't increase pipe bpp or clock if not really
         * required. This is set in the 2nd loop of calling encoder's
         * ->compute_config if the first pick doesn't work out.
         */
        bool bw_constrained;

        /* Settings for the intel dpll used on pretty much everything but
         * haswell. */
        struct dpll dpll;

        /* Selected dpll when shared or DPLL_ID_PRIVATE. */
        enum intel_dpll_id shared_dpll;

        /*
         * - PORT_CLK_SEL for DDI ports on HSW/BDW.
         * - enum skl_dpll on SKL
         */
        uint32_t ddi_pll_sel;

        /* Actual register state of the dpll, for shared dpll cross-checking. */
        struct intel_dpll_hw_state dpll_hw_state;

        int pipe_bpp;
        struct intel_link_m_n dp_m_n;

        /* m2_n2 for eDP downclock */
        struct intel_link_m_n dp_m2_n2;
        bool has_drrs;

        /*
         * Frequence the dpll for the port should run at. Differs from the
         * adjusted dotclock e.g. for DP or 12bpc hdmi mode. This is also
         * already multiplied by pixel_multiplier.
         */
        int port_clock;

        /* Used by SDVO (and if we ever fix it, HDMI). */
        unsigned pixel_multiplier;

        /* Panel fitter controls for gen2-gen4 + VLV */
        struct {
                u32 control;
                u32 pgm_ratios;
                u32 lvds_border_bits;
        } gmch_pfit;

        /* Panel fitter placement and size for Ironlake+ */
        struct {
                u32 pos;
                u32 size;
                bool enabled;
                bool force_thru;
        } pch_pfit;

        /* FDI configuration, only valid if has_pch_encoder is set. */
        int fdi_lanes;
        struct intel_link_m_n fdi_m_n;

        bool ips_enabled;

        bool double_wide;

        bool dp_encoder_is_mst;
        int pbn;
};

struct intel_pipe_wm {
        struct intel_wm_level wm[5];
        uint32_t linetime;
        bool fbc_wm_enabled;
        bool pipe_enabled;
        bool sprites_enabled;
        bool sprites_scaled;
};

struct intel_mmio_flip {
        struct drm_i915_gem_request *req;
        struct work_struct work;
};

struct skl_pipe_wm {
        struct skl_wm_level wm[8];
        struct skl_wm_level trans_wm;
        uint32_t linetime;
};

/*
 * Tracking of operations that need to be performed at the beginning/end of an
 * atomic commit, outside the atomic section where interrupts are disabled.
 * These are generally operations that grab mutexes or might otherwise sleep
 * and thus can't be run with interrupts disabled.
 */
struct intel_crtc_atomic_commit {
        /* vblank evasion */
        bool evade;
        unsigned start_vbl_count;

        /* Sleepable operations to perform before commit */
        bool wait_for_flips;
        bool disable_fbc;
        bool pre_disable_primary;
        bool update_wm;
        unsigned disabled_planes;

        /* Sleepable operations to perform after commit */
        unsigned fb_bits;
        bool wait_vblank;
        bool update_fbc;
        bool post_enable_primary;
        unsigned update_sprite_watermarks;
};

struct intel_crtc {
        struct drm_crtc base;
        enum pipe pipe;
        enum plane plane;
        u8 lut_r[256], lut_g[256], lut_b[256];
        /*
         * Whether the crtc and the connected output pipeline is active. Implies
         * that crtc->enabled is set, i.e. the current mode configuration has
         * some outputs connected to this crtc.
         */
        bool active;
        unsigned long enabled_power_domains;
        bool primary_enabled; /* is the primary plane (partially) visible? */
        bool lowfreq_avail;
        struct intel_overlay *overlay;
        struct intel_unpin_work *unpin_work;

        atomic_t unpin_work_count;

        /* Display surface base address adjustement for pageflips. Note that on
         * gen4+ this only adjusts up to a tile, offsets within a tile are
         * handled in the hw itself (with the TILEOFF register). */
        unsigned long dspaddr_offset;

        struct drm_i915_gem_object *cursor_bo;
        uint32_t cursor_addr;
        int16_t cursor_width, cursor_height;
        uint32_t cursor_cntl;
        uint32_t cursor_size;
        uint32_t cursor_base;

        struct intel_initial_plane_config plane_config;
        struct intel_crtc_state *config;
        struct intel_crtc_state *new_config;
        bool new_enabled;

        /* reset counter value when the last flip was submitted */
        unsigned int reset_counter;

        /* Access to these should be protected by dev_priv->irq_lock. */
        bool cpu_fifo_underrun_disabled;
        bool pch_fifo_underrun_disabled;

        /* per-pipe watermark state */
        struct {
                /* watermarks currently being used  */
                struct intel_pipe_wm active;
                /* SKL wm values currently in use */
                struct skl_pipe_wm skl_active;
        } wm;

        int scanline_offset;
        struct intel_mmio_flip mmio_flip;

        struct intel_crtc_atomic_commit atomic;
};

struct intel_plane_wm_parameters {
        uint32_t horiz_pixels;
        uint32_t vert_pixels;
        uint8_t bytes_per_pixel;
        bool enabled;
        bool scaled;
};

struct intel_plane {
        struct drm_plane base;
        int plane;
        enum pipe pipe;
        struct drm_i915_gem_object *obj;
        bool can_scale;
        int max_downscale;

        /* Since we need to change the watermarks before/after
         * enabling/disabling the planes, we need to store the parameters here
         * as the other pieces of the struct may not reflect the values we want
         * for the watermark calculations. Currently only Haswell uses this.
         */
        struct intel_plane_wm_parameters wm;

        /*
         * NOTE: Do not place new plane state fields here (e.g., when adding
         * new plane properties).  New runtime state should now be placed in
         * the intel_plane_state structure and accessed via drm_plane->state.
         */

        void (*update_plane)(struct drm_plane *plane,
                             struct drm_crtc *crtc,
                             struct drm_framebuffer *fb,
                             struct drm_i915_gem_object *obj,
                             int crtc_x, int crtc_y,
                             unsigned int crtc_w, unsigned int crtc_h,
                             uint32_t x, uint32_t y,
                             uint32_t src_w, uint32_t src_h);
        void (*disable_plane)(struct drm_plane *plane,
                              struct drm_crtc *crtc);
        int (*check_plane)(struct drm_plane *plane,
                           struct intel_plane_state *state);
        void (*commit_plane)(struct drm_plane *plane,
                             struct intel_plane_state *state);
        int (*update_colorkey)(struct drm_plane *plane,
                               struct drm_intel_sprite_colorkey *key);
        void (*get_colorkey)(struct drm_plane *plane,
                             struct drm_intel_sprite_colorkey *key);
};

struct intel_watermark_params {
        unsigned long fifo_size;
        unsigned long max_wm;
        unsigned long default_wm;
        unsigned long guard_size;
        unsigned long cacheline_size;
};

struct cxsr_latency {
        int is_desktop;
        int is_ddr3;
        unsigned long fsb_freq;
        unsigned long mem_freq;
        unsigned long display_sr;
        unsigned long display_hpll_disable;
        unsigned long cursor_sr;
        unsigned long cursor_hpll_disable;
};

#define to_intel_crtc(x) container_of(x, struct intel_crtc, base)
#define to_intel_connector(x) container_of(x, struct intel_connector, base)
#define to_intel_encoder(x) container_of(x, struct intel_encoder, base)
#define to_intel_framebuffer(x) container_of(x, struct intel_framebuffer, base)
#define to_intel_plane(x) container_of(x, struct intel_plane, base)
#define to_intel_plane_state(x) container_of(x, struct intel_plane_state, base)
#define intel_fb_obj(x) (x ? to_intel_framebuffer(x)->obj : NULL)

struct intel_hdmi {
        u32 hdmi_reg;
        int ddc_bus;
        uint32_t color_range;
        bool color_range_auto;
        bool has_hdmi_sink;
        bool has_audio;
        enum hdmi_force_audio force_audio;
        bool rgb_quant_range_selectable;
        enum hdmi_picture_aspect aspect_ratio;
        void (*write_infoframe)(struct drm_encoder *encoder,
                                enum hdmi_infoframe_type type,
                                const void *frame, ssize_t len);
        void (*set_infoframes)(struct drm_encoder *encoder,
                               bool enable,
                               struct drm_display_mode *adjusted_mode);
        bool (*infoframe_enabled)(struct drm_encoder *encoder);
};

struct intel_dp_mst_encoder;
#define DP_MAX_DOWNSTREAM_PORTS         0x10

struct intel_dp {
        uint32_t output_reg;
        uint32_t aux_ch_ctl_reg;
        uint32_t DP;
        bool has_audio;
        enum hdmi_force_audio force_audio;
        uint32_t color_range;
        bool color_range_auto;
        uint8_t link_bw;
        uint8_t lane_count;
        uint8_t dpcd[DP_RECEIVER_CAP_SIZE];
        uint8_t psr_dpcd[EDP_PSR_RECEIVER_CAP_SIZE];
        uint8_t downstream_ports[DP_MAX_DOWNSTREAM_PORTS];
        struct drm_dp_aux aux;
        uint8_t train_set[4];
        int panel_power_up_delay;
        int panel_power_down_delay;
        int panel_power_cycle_delay;
        int backlight_on_delay;
        int backlight_off_delay;
        struct delayed_work panel_vdd_work;
        bool want_panel_vdd;
        unsigned long last_power_cycle;
        unsigned long last_power_on;
        unsigned long last_backlight_off;

        struct notifier_block edp_notifier;

        /*
         * Pipe whose power sequencer is currently locked into
         * this port. Only relevant on VLV/CHV.
         */
        enum pipe pps_pipe;
        struct edp_power_seq pps_delays;

        bool use_tps3;
        bool can_mst; /* this port supports mst */
        bool is_mst;
        int active_mst_links;
        /* connector directly attached - won't be use for modeset in mst world */
        struct intel_connector *attached_connector;

        /* mst connector list */
        struct intel_dp_mst_encoder *mst_encoders[I915_MAX_PIPES];
        struct drm_dp_mst_topology_mgr mst_mgr;

        uint32_t (*get_aux_clock_divider)(struct intel_dp *dp, int index);
        /*
         * This function returns the value we have to program the AUX_CTL
         * register with to kick off an AUX transaction.
         */
        uint32_t (*get_aux_send_ctl)(struct intel_dp *dp,
                                     bool has_aux_irq,
                                     int send_bytes,
                                     uint32_t aux_clock_divider);
};

struct intel_digital_port {
        struct intel_encoder base;
        enum port port;
        u32 saved_port_bits;
        struct intel_dp dp;
        struct intel_hdmi hdmi;
        enum irqreturn (*hpd_pulse)(struct intel_digital_port *, bool);
};

struct intel_dp_mst_encoder {
        struct intel_encoder base;
        enum pipe pipe;
        struct intel_digital_port *primary;
        void *port; /* store this opaque as its illegal to dereference it */
};

static inline int
vlv_dport_to_channel(struct intel_digital_port *dport)
{
        switch (dport->port) {
        case PORT_B:
        case PORT_D:
                return DPIO_CH0;
        case PORT_C:
                return DPIO_CH1;
        default:
                BUG();
        }
}

static inline int
vlv_pipe_to_channel(enum pipe pipe)
{
        switch (pipe) {
        case PIPE_A:
        case PIPE_C:
                return DPIO_CH0;
        case PIPE_B:
                return DPIO_CH1;
        default:
                BUG();
        }
}

static inline struct drm_crtc *
intel_get_crtc_for_pipe(struct drm_device *dev, int pipe)
{
        struct drm_i915_private *dev_priv = dev->dev_private;
        return dev_priv->pipe_to_crtc_mapping[pipe];
}

static inline struct drm_crtc *
intel_get_crtc_for_plane(struct drm_device *dev, int plane)
{
        struct drm_i915_private *dev_priv = dev->dev_private;
        return dev_priv->plane_to_crtc_mapping[plane];
}

struct intel_unpin_work {
        struct work_struct work;
        struct drm_crtc *crtc;
        struct drm_i915_gem_object *old_fb_obj;
        struct drm_i915_gem_object *pending_flip_obj;
        struct drm_pending_vblank_event *event;
        atomic_t pending;
#define INTEL_FLIP_INACTIVE     0
#define INTEL_FLIP_PENDING      1
#define INTEL_FLIP_COMPLETE     2
        u32 flip_count;
        u32 gtt_offset;
        struct drm_i915_gem_request *flip_queued_req;
        int flip_queued_vblank;
        int flip_ready_vblank;
        bool enable_stall_check;
};

struct intel_set_config {
        struct drm_encoder **save_connector_encoders;
        struct drm_crtc **save_encoder_crtcs;
        bool *save_crtc_enabled;

        bool fb_changed;
        bool mode_changed;
};

struct intel_load_detect_pipe {
        struct drm_framebuffer *release_fb;
        bool load_detect_temp;
        int dpms_mode;
};

static inline struct intel_encoder *
intel_attached_encoder(struct drm_connector *connector)
{
        return to_intel_connector(connector)->encoder;
}

static inline struct intel_digital_port *
enc_to_dig_port(struct drm_encoder *encoder)
{
        return container_of(encoder, struct intel_digital_port, base.base);
}

static inline struct intel_dp_mst_encoder *
enc_to_mst(struct drm_encoder *encoder)
{
        return container_of(encoder, struct intel_dp_mst_encoder, base.base);
}

static inline struct intel_dp *enc_to_intel_dp(struct drm_encoder *encoder)
{
        return &enc_to_dig_port(encoder)->dp;
}

static inline struct intel_digital_port *
dp_to_dig_port(struct intel_dp *intel_dp)
{
        return container_of(intel_dp, struct intel_digital_port, dp);
}

static inline struct intel_digital_port *
hdmi_to_dig_port(struct intel_hdmi *intel_hdmi)
{
        return container_of(intel_hdmi, struct intel_digital_port, hdmi);
}

/*
 * Returns the number of planes for this pipe, ie the number of sprites + 1
 * (primary plane). This doesn't count the cursor plane then.
 */
static inline unsigned int intel_num_planes(struct intel_crtc *crtc)
{
        return INTEL_INFO(crtc->base.dev)->num_sprites[crtc->pipe] + 1;
}

/* intel_fifo_underrun.c */
bool intel_set_cpu_fifo_underrun_reporting(struct drm_i915_private *dev_priv,
                                           enum pipe pipe, bool enable);
bool intel_set_pch_fifo_underrun_reporting(struct drm_i915_private *dev_priv,
                                           enum transcoder pch_transcoder,
                                           bool enable);
void intel_cpu_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
                                         enum pipe pipe);
void intel_pch_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
                                         enum transcoder pch_transcoder);
void i9xx_check_fifo_underruns(struct drm_i915_private *dev_priv);

/* i915_irq.c */
void gen5_enable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask);
void gen5_disable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask);
void gen6_enable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);
void gen6_disable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);
void gen6_reset_rps_interrupts(struct drm_device *dev);
void gen6_enable_rps_interrupts(struct drm_device *dev);
void gen6_disable_rps_interrupts(struct drm_device *dev);
u32 gen6_sanitize_rps_pm_mask(struct drm_i915_private *dev_priv, u32 mask);
void intel_runtime_pm_disable_interrupts(struct drm_i915_private *dev_priv);
void intel_runtime_pm_enable_interrupts(struct drm_i915_private *dev_priv);
static inline bool intel_irqs_enabled(struct drm_i915_private *dev_priv)
{
        /*
         * We only use drm_irq_uninstall() at unload and VT switch, so
         * this is the only thing we need to check.
         */
        return dev_priv->pm.irqs_enabled;
}

int intel_get_crtc_scanline(struct intel_crtc *crtc);
void gen8_irq_power_well_post_enable(struct drm_i915_private *dev_priv);

/* intel_crt.c */
void intel_crt_init(struct drm_device *dev);


/* intel_ddi.c */
void intel_prepare_ddi(struct drm_device *dev);
void hsw_fdi_link_train(struct drm_crtc *crtc);
void intel_ddi_init(struct drm_device *dev, enum port port);
enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder);
bool intel_ddi_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe);
int intel_ddi_get_cdclk_freq(struct drm_i915_private *dev_priv);
void intel_ddi_pll_init(struct drm_device *dev);
void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc);
void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv,
                                       enum transcoder cpu_transcoder);
void intel_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc);
void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc);
bool intel_ddi_pll_select(struct intel_crtc *crtc,
                          struct intel_crtc_state *crtc_state);
void intel_ddi_set_pipe_settings(struct drm_crtc *crtc);
void intel_ddi_prepare_link_retrain(struct drm_encoder *encoder);
bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector);
void intel_ddi_fdi_disable(struct drm_crtc *crtc);
void intel_ddi_get_config(struct intel_encoder *encoder,
                          struct intel_crtc_state *pipe_config);

void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder);
void intel_ddi_clock_get(struct intel_encoder *encoder,
                         struct intel_crtc_state *pipe_config);
void intel_ddi_set_vc_payload_alloc(struct drm_crtc *crtc, bool state);

/* intel_frontbuffer.c */
void intel_fb_obj_invalidate(struct drm_i915_gem_object *obj,
                             struct intel_engine_cs *ring);
void intel_frontbuffer_flip_prepare(struct drm_device *dev,
                                    unsigned frontbuffer_bits);
void intel_frontbuffer_flip_complete(struct drm_device *dev,
                                     unsigned frontbuffer_bits);
void intel_frontbuffer_flush(struct drm_device *dev,
                             unsigned frontbuffer_bits);
/**
 * intel_frontbuffer_flip - synchronous frontbuffer flip
 * @dev: DRM device
 * @frontbuffer_bits: frontbuffer plane tracking bits
 *
 * This function gets called after scheduling a flip on @obj. This is for
 * synchronous plane updates which will happen on the next vblank and which will
 * not get delayed by pending gpu rendering.
 *
 * Can be called without any locks held.
 */
static inline
void intel_frontbuffer_flip(struct drm_device *dev,
                            unsigned frontbuffer_bits)
{
        intel_frontbuffer_flush(dev, frontbuffer_bits);
}

int intel_fb_align_height(struct drm_device *dev, int height,
                          unsigned int tiling);
void intel_fb_obj_flush(struct drm_i915_gem_object *obj, bool retire);


/* intel_audio.c */
void intel_init_audio(struct drm_device *dev);
void intel_audio_codec_enable(struct intel_encoder *encoder);
void intel_audio_codec_disable(struct intel_encoder *encoder);
void i915_audio_component_init(struct drm_i915_private *dev_priv);
void i915_audio_component_cleanup(struct drm_i915_private *dev_priv);

/* intel_display.c */
extern const struct drm_plane_funcs intel_plane_funcs;
bool intel_has_pending_fb_unpin(struct drm_device *dev);
int intel_pch_rawclk(struct drm_device *dev);
void intel_mark_busy(struct drm_device *dev);
void intel_mark_idle(struct drm_device *dev);
void intel_crtc_restore_mode(struct drm_crtc *crtc);
void intel_crtc_control(struct drm_crtc *crtc, bool enable);
void intel_crtc_update_dpms(struct drm_crtc *crtc);
void intel_encoder_destroy(struct drm_encoder *encoder);
void intel_connector_dpms(struct drm_connector *, int mode);
bool intel_connector_get_hw_state(struct intel_connector *connector);
void intel_modeset_check_state(struct drm_device *dev);
bool ibx_digital_port_connected(struct drm_i915_private *dev_priv,
                                struct intel_digital_port *port);
void intel_connector_attach_encoder(struct intel_connector *connector,
                                    struct intel_encoder *encoder);
struct drm_encoder *intel_best_encoder(struct drm_connector *connector);
struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
                                             struct drm_crtc *crtc);
enum pipe intel_get_pipe_from_connector(struct intel_connector *connector);
int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
                                struct drm_file *file_priv);
enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
                                             enum pipe pipe);
bool intel_pipe_has_type(struct intel_crtc *crtc, enum intel_output_type type);
static inline void
intel_wait_for_vblank(struct drm_device *dev, int pipe)
{
        drm_wait_one_vblank(dev, pipe);
}
int ironlake_get_lanes_required(int target_clock, int link_bw, int bpp);
void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
                         struct intel_digital_port *dport);
bool intel_get_load_detect_pipe(struct drm_connector *connector,
                                struct drm_display_mode *mode,
                                struct intel_load_detect_pipe *old,
                                struct drm_modeset_acquire_ctx *ctx);
void intel_release_load_detect_pipe(struct drm_connector *connector,
                                    struct intel_load_detect_pipe *old);
int intel_pin_and_fence_fb_obj(struct drm_plane *plane,
                               struct drm_framebuffer *fb,
                               struct intel_engine_cs *pipelined);
void intel_unpin_fb_obj(struct drm_i915_gem_object *obj);
struct drm_framebuffer *
__intel_framebuffer_create(struct drm_device *dev,
                           struct drm_mode_fb_cmd2 *mode_cmd,
                           struct drm_i915_gem_object *obj);
void intel_prepare_page_flip(struct drm_device *dev, int plane);
void intel_finish_page_flip(struct drm_device *dev, int pipe);
void intel_finish_page_flip_plane(struct drm_device *dev, int plane);
void intel_check_page_flip(struct drm_device *dev, int pipe);
int intel_prepare_plane_fb(struct drm_plane *plane,
                           struct drm_framebuffer *fb);
void intel_cleanup_plane_fb(struct drm_plane *plane,
                            struct drm_framebuffer *fb);
int intel_plane_atomic_get_property(struct drm_plane *plane,
                                    const struct drm_plane_state *state,
                                    struct drm_property *property,
                                    uint64_t *val);
int intel_plane_atomic_set_property(struct drm_plane *plane,
                                    struct drm_plane_state *state,
                                    struct drm_property *property,
                                    uint64_t val);

/* shared dpll functions */
struct intel_shared_dpll *intel_crtc_to_shared_dpll(struct intel_crtc *crtc);
void assert_shared_dpll(struct drm_i915_private *dev_priv,
                        struct intel_shared_dpll *pll,
                        bool state);
#define assert_shared_dpll_enabled(d, p) assert_shared_dpll(d, p, true)
#define assert_shared_dpll_disabled(d, p) assert_shared_dpll(d, p, false)
struct intel_shared_dpll *intel_get_shared_dpll(struct intel_crtc *crtc,
                                                struct intel_crtc_state *state);
void intel_put_shared_dpll(struct intel_crtc *crtc);

void vlv_force_pll_on(struct drm_device *dev, enum pipe pipe,
                      const struct dpll *dpll);
void vlv_force_pll_off(struct drm_device *dev, enum pipe pipe);

/* modesetting asserts */
void assert_panel_unlocked(struct drm_i915_private *dev_priv,
                           enum pipe pipe);
void assert_pll(struct drm_i915_private *dev_priv,
                enum pipe pipe, bool state);
#define assert_pll_enabled(d, p) assert_pll(d, p, true)
#define assert_pll_disabled(d, p) assert_pll(d, p, false)
void assert_fdi_rx_pll(struct drm_i915_private *dev_priv,
                       enum pipe pipe, bool state);
#define assert_fdi_rx_pll_enabled(d, p) assert_fdi_rx_pll(d, p, true)
#define assert_fdi_rx_pll_disabled(d, p) assert_fdi_rx_pll(d, p, false)
void assert_pipe(struct drm_i915_private *dev_priv, enum pipe pipe, bool state);
#define assert_pipe_enabled(d, p) assert_pipe(d, p, true)
#define assert_pipe_disabled(d, p) assert_pipe(d, p, false)
unsigned long intel_gen4_compute_page_offset(int *x, int *y,
                                             unsigned int tiling_mode,
                                             unsigned int bpp,
                                             unsigned int pitch);
void intel_prepare_reset(struct drm_device *dev);
void intel_finish_reset(struct drm_device *dev);
void hsw_enable_pc8(struct drm_i915_private *dev_priv);
void hsw_disable_pc8(struct drm_i915_private *dev_priv);
void intel_dp_get_m_n(struct intel_crtc *crtc,
                      struct intel_crtc_state *pipe_config);
void intel_dp_set_m_n(struct intel_crtc *crtc);
int intel_dotclock_calculate(int link_freq, const struct intel_link_m_n *m_n);
void
ironlake_check_encoder_dotclock(const struct intel_crtc_state *pipe_config,
                                int dotclock);

bool intel_crtc_active(struct drm_crtc *crtc);
void hsw_enable_ips(struct intel_crtc *crtc);
void hsw_disable_ips(struct intel_crtc *crtc);
enum intel_display_power_domain
intel_display_port_power_domain(struct intel_encoder *intel_encoder);
void intel_mode_from_pipe_config(struct drm_display_mode *mode,
                                 struct intel_crtc_state *pipe_config);
void intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc);
void intel_modeset_preclose(struct drm_device *dev, struct drm_file *file);

/* intel_dp.c */
void intel_dp_init(struct drm_device *dev, int output_reg, enum port port);
bool intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
                             struct intel_connector *intel_connector);
void intel_dp_start_link_train(struct intel_dp *intel_dp);
void intel_dp_complete_link_train(struct intel_dp *intel_dp);
void intel_dp_stop_link_train(struct intel_dp *intel_dp);
void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode);
void intel_dp_encoder_destroy(struct drm_encoder *encoder);
void intel_dp_check_link_status(struct intel_dp *intel_dp);
int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc);
bool intel_dp_compute_config(struct intel_encoder *encoder,
                             struct intel_crtc_state *pipe_config);
bool intel_dp_is_edp(struct drm_device *dev, enum port port);
enum irqreturn intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port,
                                  bool long_hpd);
void intel_edp_backlight_on(struct intel_dp *intel_dp);
void intel_edp_backlight_off(struct intel_dp *intel_dp);
void intel_edp_panel_vdd_on(struct intel_dp *intel_dp);
void intel_edp_panel_on(struct intel_dp *intel_dp);
void intel_edp_panel_off(struct intel_dp *intel_dp);
void intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector);
void intel_dp_mst_suspend(struct drm_device *dev);
void intel_dp_mst_resume(struct drm_device *dev);
int intel_dp_max_link_bw(struct intel_dp *intel_dp);
void intel_dp_hot_plug(struct intel_encoder *intel_encoder);
void vlv_power_sequencer_reset(struct drm_i915_private *dev_priv);
uint32_t intel_dp_pack_aux(const uint8_t *src, int src_bytes);
void intel_dp_unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes);
int intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
                       struct drm_framebuffer *fb, int crtc_x, int crtc_y,
                       unsigned int crtc_w, unsigned int crtc_h,
                       uint32_t src_x, uint32_t src_y,
                       uint32_t src_w, uint32_t src_h);
int intel_disable_plane(struct drm_plane *plane);
void intel_plane_destroy(struct drm_plane *plane);
void intel_edp_drrs_enable(struct intel_dp *intel_dp);
void intel_edp_drrs_disable(struct intel_dp *intel_dp);
void intel_edp_drrs_invalidate(struct drm_device *dev,
                unsigned frontbuffer_bits);
void intel_edp_drrs_flush(struct drm_device *dev, unsigned frontbuffer_bits);

/* intel_dp_mst.c */
int intel_dp_mst_encoder_init(struct intel_digital_port *intel_dig_port, int conn_id);
void intel_dp_mst_encoder_cleanup(struct intel_digital_port *intel_dig_port);
/* intel_dsi.c */
void intel_dsi_init(struct drm_device *dev);


/* intel_dvo.c */
void intel_dvo_init(struct drm_device *dev);


/* legacy fbdev emulation in intel_fbdev.c */
#ifdef CONFIG_DRM_I915_FBDEV
extern int intel_fbdev_init(struct drm_device *dev);
extern void intel_fbdev_initial_config(void *data, async_cookie_t cookie);
extern void intel_fbdev_fini(struct drm_device *dev);
extern void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous);
extern void intel_fbdev_output_poll_changed(struct drm_device *dev);
extern void intel_fbdev_restore_mode(struct drm_device *dev);
#else
static inline int intel_fbdev_init(struct drm_device *dev)
{
        return 0;
}

static inline void intel_fbdev_initial_config(void *data, async_cookie_t cookie)
{
}

static inline void intel_fbdev_fini(struct drm_device *dev)
{
}

static inline void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous)
{
}

static inline void intel_fbdev_restore_mode(struct drm_device *dev)
{
}
#endif

/* intel_fbc.c */
bool intel_fbc_enabled(struct drm_device *dev);
void intel_fbc_update(struct drm_device *dev);
void intel_fbc_init(struct drm_i915_private *dev_priv);
void intel_fbc_disable(struct drm_device *dev);
void bdw_fbc_sw_flush(struct drm_device *dev, u32 value);

/* intel_hdmi.c */
void intel_hdmi_init(struct drm_device *dev, int hdmi_reg, enum port port);
void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
                               struct intel_connector *intel_connector);
struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder);
bool intel_hdmi_compute_config(struct intel_encoder *encoder,
                               struct intel_crtc_state *pipe_config);


/* intel_lvds.c */
void intel_lvds_init(struct drm_device *dev);
bool intel_is_dual_link_lvds(struct drm_device *dev);


/* intel_modes.c */
int intel_connector_update_modes(struct drm_connector *connector,
                                 struct edid *edid);
int intel_ddc_get_modes(struct drm_connector *c, struct i2c_adapter *adapter);
void intel_attach_force_audio_property(struct drm_connector *connector);
void intel_attach_broadcast_rgb_property(struct drm_connector *connector);


/* intel_overlay.c */
void intel_setup_overlay(struct drm_device *dev);
void intel_cleanup_overlay(struct drm_device *dev);
int intel_overlay_switch_off(struct intel_overlay *overlay);
int intel_overlay_put_image(struct drm_device *dev, void *data,
                            struct drm_file *file_priv);
int intel_overlay_attrs(struct drm_device *dev, void *data,
                        struct drm_file *file_priv);
void intel_overlay_reset(struct drm_i915_private *dev_priv);


/* intel_panel.c */
int intel_panel_init(struct intel_panel *panel,
                     struct drm_display_mode *fixed_mode,
                     struct drm_display_mode *downclock_mode);
void intel_panel_fini(struct intel_panel *panel);
void intel_fixed_panel_mode(const struct drm_display_mode *fixed_mode,
                            struct drm_display_mode *adjusted_mode);
void intel_pch_panel_fitting(struct intel_crtc *crtc,
                             struct intel_crtc_state *pipe_config,
                             int fitting_mode);
void intel_gmch_panel_fitting(struct intel_crtc *crtc,
                              struct intel_crtc_state *pipe_config,
                              int fitting_mode);
void intel_panel_set_backlight_acpi(struct intel_connector *connector,
                                    u32 level, u32 max);
int intel_panel_setup_backlight(struct drm_connector *connector, enum pipe pipe);
void intel_panel_enable_backlight(struct intel_connector *connector);
void intel_panel_disable_backlight(struct intel_connector *connector);
void intel_panel_destroy_backlight(struct drm_connector *connector);
void intel_panel_init_backlight_funcs(struct drm_device *dev);
enum drm_connector_status intel_panel_detect(struct drm_device *dev);
extern struct drm_display_mode *intel_find_panel_downclock(
                                struct drm_device *dev,
                                struct drm_display_mode *fixed_mode,
                                struct drm_connector *connector);
void intel_backlight_register(struct drm_device *dev);
void intel_backlight_unregister(struct drm_device *dev);


/* intel_psr.c */
void intel_psr_enable(struct intel_dp *intel_dp);
void intel_psr_disable(struct intel_dp *intel_dp);
void intel_psr_invalidate(struct drm_device *dev,
                              unsigned frontbuffer_bits);
void intel_psr_flush(struct drm_device *dev,
                         unsigned frontbuffer_bits);
void intel_psr_init(struct drm_device *dev);

/* intel_runtime_pm.c */
int intel_power_domains_init(struct drm_i915_private *);
void intel_power_domains_fini(struct drm_i915_private *);
void intel_power_domains_init_hw(struct drm_i915_private *dev_priv);
void intel_runtime_pm_enable(struct drm_i915_private *dev_priv);

bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
                                    enum intel_display_power_domain domain);
bool __intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
                                      enum intel_display_power_domain domain);
void intel_display_power_get(struct drm_i915_private *dev_priv,
                             enum intel_display_power_domain domain);
void intel_display_power_put(struct drm_i915_private *dev_priv,
                             enum intel_display_power_domain domain);
void intel_aux_display_runtime_get(struct drm_i915_private *dev_priv);
void intel_aux_display_runtime_put(struct drm_i915_private *dev_priv);
void intel_runtime_pm_get(struct drm_i915_private *dev_priv);
void intel_runtime_pm_get_noresume(struct drm_i915_private *dev_priv);
void intel_runtime_pm_put(struct drm_i915_private *dev_priv);

void intel_display_set_init_power(struct drm_i915_private *dev, bool enable);

/* intel_pm.c */
void intel_init_clock_gating(struct drm_device *dev);
void intel_suspend_hw(struct drm_device *dev);
int ilk_wm_max_level(const struct drm_device *dev);
void intel_update_watermarks(struct drm_crtc *crtc);
void intel_update_sprite_watermarks(struct drm_plane *plane,
                                    struct drm_crtc *crtc,
                                    uint32_t sprite_width,
                                    uint32_t sprite_height,
                                    int pixel_size,
                                    bool enabled, bool scaled);
void intel_init_pm(struct drm_device *dev);
void intel_pm_setup(struct drm_device *dev);
void intel_gpu_ips_init(struct drm_i915_private *dev_priv);
void intel_gpu_ips_teardown(void);
void intel_init_gt_powersave(struct drm_device *dev);
void intel_cleanup_gt_powersave(struct drm_device *dev);
void intel_enable_gt_powersave(struct drm_device *dev);
void intel_disable_gt_powersave(struct drm_device *dev);
void intel_suspend_gt_powersave(struct drm_device *dev);
void intel_reset_gt_powersave(struct drm_device *dev);
void ironlake_teardown_rc6(struct drm_device *dev);
void gen6_update_ring_freq(struct drm_device *dev);
void gen6_rps_idle(struct drm_i915_private *dev_priv);
void gen6_rps_boost(struct drm_i915_private *dev_priv);
void ilk_wm_get_hw_state(struct drm_device *dev);
void skl_wm_get_hw_state(struct drm_device *dev);
void skl_ddb_get_hw_state(struct drm_i915_private *dev_priv,
                          struct skl_ddb_allocation *ddb /* out */);


/* intel_sdvo.c */
bool intel_sdvo_init(struct drm_device *dev, uint32_t sdvo_reg, bool is_sdvob);


/* intel_sprite.c */
int intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane);
void intel_flush_primary_plane(struct drm_i915_private *dev_priv,
                               enum plane plane);
int intel_plane_set_property(struct drm_plane *plane,
                             struct drm_property *prop,
                             uint64_t val);
int intel_plane_restore(struct drm_plane *plane);
int intel_sprite_set_colorkey(struct drm_device *dev, void *data,
                              struct drm_file *file_priv);
int intel_sprite_get_colorkey(struct drm_device *dev, void *data,
                              struct drm_file *file_priv);
bool intel_pipe_update_start(struct intel_crtc *crtc,
                             uint32_t *start_vbl_count);
void intel_pipe_update_end(struct intel_crtc *crtc, u32 start_vbl_count);
void intel_post_enable_primary(struct drm_crtc *crtc);
void intel_pre_disable_primary(struct drm_crtc *crtc);

/* intel_tv.c */
void intel_tv_init(struct drm_device *dev);

/* intel_atomic.c */
int intel_atomic_check(struct drm_device *dev,
                       struct drm_atomic_state *state);
int intel_atomic_commit(struct drm_device *dev,
                        struct drm_atomic_state *state,
                        bool async);
int intel_connector_atomic_get_property(struct drm_connector *connector,
                                        const struct drm_connector_state *state,
                                        struct drm_property *property,
                                        uint64_t *val);
struct drm_crtc_state *intel_crtc_duplicate_state(struct drm_crtc *crtc);
void intel_crtc_destroy_state(struct drm_crtc *crtc,
                               struct drm_crtc_state *state);

/* intel_atomic_plane.c */
struct intel_plane_state *intel_create_plane_state(struct drm_plane *plane);
struct drm_plane_state *intel_plane_duplicate_state(struct drm_plane *plane);
void intel_plane_destroy_state(struct drm_plane *plane,
                               struct drm_plane_state *state);
extern const struct drm_plane_helper_funcs intel_plane_helper_funcs;

#endif /* __INTEL_DRV_H__ */