/*
 * 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 <linux/sched/clock.h>
#include <drm/i915_drm.h>
#include "i915_drv.h"
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_encoder.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_dp_dual_mode_helper.h>
#include <drm/drm_dp_mst_helper.h>
#include <drm/drm_rect.h>
#include <drm/drm_atomic.h>

/**
 * __wait_for - magic wait macro
 *
 * Macro to help avoid open coding check/wait/timeout patterns. 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(OP, COND, US, Wmin, Wmax) ({ \
        const ktime_t end__ = ktime_add_ns(ktime_get_raw(), 1000ll * (US)); \
        long wait__ = (Wmin); /* recommended min for usleep is 10 us */ \
        int ret__;                                                      \
        might_sleep();                                                  \
        for (;;) {                                                      \
                const bool expired__ = ktime_after(ktime_get_raw(), end__); \
                OP;                                                     \
                if (COND) {                                             \
                        ret__ = 0;                                      \
                        break;                                          \
                }                                                       \
                if (expired__) {                                        \
                        ret__ = -ETIMEDOUT;                             \
                        break;                                          \
                }                                                       \
                usleep_range(wait__, wait__ * 2);                       \
                if (wait__ < (Wmax))                                    \
                        wait__ <<= 1;                                   \
        }                                                               \
        ret__;                                                          \
})

#define _wait_for(COND, US, Wmin, Wmax) __wait_for(, (COND), (US), (Wmin), \
                                                   (Wmax))
#define wait_for(COND, MS)              _wait_for((COND), (MS) * 1000, 10, 1000)

/* If CONFIG_PREEMPT_COUNT is disabled, in_atomic() always reports false. */
#if defined(CONFIG_DRM_I915_DEBUG) && defined(CONFIG_PREEMPT_COUNT)
# define _WAIT_FOR_ATOMIC_CHECK(ATOMIC) WARN_ON_ONCE((ATOMIC) && !in_atomic())
#else
# define _WAIT_FOR_ATOMIC_CHECK(ATOMIC) do { } while (0)
#endif

#define _wait_for_atomic(COND, US, ATOMIC) \
({ \
        int cpu, ret, timeout = (US) * 1000; \
        u64 base; \
        _WAIT_FOR_ATOMIC_CHECK(ATOMIC); \
        if (!(ATOMIC)) { \
                preempt_disable(); \
                cpu = smp_processor_id(); \
        } \
        base = local_clock(); \
        for (;;) { \
                u64 now = local_clock(); \
                if (!(ATOMIC)) \
                        preempt_enable(); \
                if (COND) { \
                        ret = 0; \
                        break; \
                } \
                if (now - base >= timeout) { \
                        ret = -ETIMEDOUT; \
                        break; \
                } \
                cpu_relax(); \
                if (!(ATOMIC)) { \
                        preempt_disable(); \
                        if (unlikely(cpu != smp_processor_id())) { \
                                timeout -= now - base; \
                                cpu = smp_processor_id(); \
                                base = local_clock(); \
                        } \
                } \
        } \
        ret; \
})

#define wait_for_us(COND, US) \
({ \
        int ret__; \
        BUILD_BUG_ON(!__builtin_constant_p(US)); \
        if ((US) > 10) \
                ret__ = _wait_for((COND), (US), 10, 10); \
        else \
                ret__ = _wait_for_atomic((COND), (US), 0); \
        ret__; \
})

#define wait_for_atomic_us(COND, US) \
({ \
        BUILD_BUG_ON(!__builtin_constant_p(US)); \
        BUILD_BUG_ON((US) > 50000); \
        _wait_for_atomic((COND), (US), 1); \
})

#define wait_for_atomic(COND, MS) wait_for_atomic_us((COND), (MS) * 1000)

#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_DP = 7,
        INTEL_OUTPUT_EDP = 8,
        INTEL_OUTPUT_DSI = 9,
        INTEL_OUTPUT_DDI = 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_rotation_info rot_info;

        /* for each plane in the normal GTT view */
        struct {
                unsigned int x, y;
        } normal[2];
        /* for each plane in the rotated GTT view */
        struct {
                unsigned int x, y;
                unsigned int pitch; /* pixels */
        } rotated[2];
};

struct intel_fbdev {
        struct drm_fb_helper helper;
        struct intel_framebuffer *fb;
        struct i915_vma *vma;
        unsigned long vma_flags;
        async_cookie_t cookie;
        int preferred_bpp;
};

struct intel_encoder {
        struct drm_encoder base;

        enum intel_output_type type;
        enum port port;
        unsigned int cloneable;
        bool (*hotplug)(struct intel_encoder *encoder,
                        struct intel_connector *connector);
        enum intel_output_type (*compute_output_type)(struct intel_encoder *,
                                                      struct intel_crtc_state *,
                                                      struct drm_connector_state *);
        bool (*compute_config)(struct intel_encoder *,
                               struct intel_crtc_state *,
                               struct drm_connector_state *);
        void (*pre_pll_enable)(struct intel_encoder *,
                               const struct intel_crtc_state *,
                               const struct drm_connector_state *);
        void (*pre_enable)(struct intel_encoder *,
                           const struct intel_crtc_state *,
                           const struct drm_connector_state *);
        void (*enable)(struct intel_encoder *,
                       const struct intel_crtc_state *,
                       const struct drm_connector_state *);
        void (*disable)(struct intel_encoder *,
                        const struct intel_crtc_state *,
                        const struct drm_connector_state *);
        void (*post_disable)(struct intel_encoder *,
                             const struct intel_crtc_state *,
                             const struct drm_connector_state *);
        void (*post_pll_disable)(struct intel_encoder *,
                                 const struct intel_crtc_state *,
                                 const struct drm_connector_state *);
        /* 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);
        /* Returns a mask of power domains that need to be referenced as part
         * of the hardware state readout code. */
        u64 (*get_power_domains)(struct intel_encoder *encoder);
        /*
         * 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;
        enum intel_display_power_domain power_domain;
        /* for communication with audio component; protected by av_mutex */
        const struct drm_connector *audio_connector;
};

struct intel_panel {
        struct drm_display_mode *fixed_mode;
        struct drm_display_mode *alt_fixed_mode;
        struct drm_display_mode *downclock_mode;

        /* backlight */
        struct {
                bool present;
                u32 level;
                u32 min;
                u32 max;
                bool enabled;
                bool combination_mode;  /* gen 2/4 only */
                bool active_low_pwm;
                bool alternate_pwm_increment;   /* lpt+ */

                /* PWM chip */
                bool util_pin_active_low;       /* bxt+ */
                u8 controller;          /* bxt+ only */
                struct pwm_device *pwm;

                struct backlight_device *device;

                /* Connector and platform specific backlight functions */
                int (*setup)(struct intel_connector *connector, enum pipe pipe);
                uint32_t (*get)(struct intel_connector *connector);
                void (*set)(const struct drm_connector_state *conn_state, uint32_t level);
                void (*disable)(const struct drm_connector_state *conn_state);
                void (*enable)(const struct intel_crtc_state *crtc_state,
                               const struct drm_connector_state *conn_state);
                uint32_t (*hz_to_pwm)(struct intel_connector *connector,
                                      uint32_t hz);
                void (*power)(struct intel_connector *, bool enable);
        } backlight;
};

/*
 * This structure serves as a translation layer between the generic HDCP code
 * and the bus-specific code. What that means is that HDCP over HDMI differs
 * from HDCP over DP, so to account for these differences, we need to
 * communicate with the receiver through this shim.
 *
 * For completeness, the 2 buses differ in the following ways:
 *      - DP AUX vs. DDC
 *              HDCP registers on the receiver are set via DP AUX for DP, and
 *              they are set via DDC for HDMI.
 *      - Receiver register offsets
 *              The offsets of the registers are different for DP vs. HDMI
 *      - Receiver register masks/offsets
 *              For instance, the ready bit for the KSV fifo is in a different
 *              place on DP vs HDMI
 *      - Receiver register names
 *              Seriously. In the DP spec, the 16-bit register containing
 *              downstream information is called BINFO, on HDMI it's called
 *              BSTATUS. To confuse matters further, DP has a BSTATUS register
 *              with a completely different definition.
 *      - KSV FIFO
 *              On HDMI, the ksv fifo is read all at once, whereas on DP it must
 *              be read 3 keys at a time
 *      - Aksv output
 *              Since Aksv is hidden in hardware, there's different procedures
 *              to send it over DP AUX vs DDC
 */
struct intel_hdcp_shim {
        /* Outputs the transmitter's An and Aksv values to the receiver. */
        int (*write_an_aksv)(struct intel_digital_port *intel_dig_port, u8 *an);

        /* Reads the receiver's key selection vector */
        int (*read_bksv)(struct intel_digital_port *intel_dig_port, u8 *bksv);

        /*
         * Reads BINFO from DP receivers and BSTATUS from HDMI receivers. The
         * definitions are the same in the respective specs, but the names are
         * different. Call it BSTATUS since that's the name the HDMI spec
         * uses and it was there first.
         */
        int (*read_bstatus)(struct intel_digital_port *intel_dig_port,
                            u8 *bstatus);

        /* Determines whether a repeater is present downstream */
        int (*repeater_present)(struct intel_digital_port *intel_dig_port,
                                bool *repeater_present);

        /* Reads the receiver's Ri' value */
        int (*read_ri_prime)(struct intel_digital_port *intel_dig_port, u8 *ri);

        /* Determines if the receiver's KSV FIFO is ready for consumption */
        int (*read_ksv_ready)(struct intel_digital_port *intel_dig_port,
                              bool *ksv_ready);

        /* Reads the ksv fifo for num_downstream devices */
        int (*read_ksv_fifo)(struct intel_digital_port *intel_dig_port,
                             int num_downstream, u8 *ksv_fifo);

        /* Reads a 32-bit part of V' from the receiver */
        int (*read_v_prime_part)(struct intel_digital_port *intel_dig_port,
                                 int i, u32 *part);

        /* Enables HDCP signalling on the port */
        int (*toggle_signalling)(struct intel_digital_port *intel_dig_port,
                                 bool enable);

        /* Ensures the link is still protected */
        bool (*check_link)(struct intel_digital_port *intel_dig_port);

        /* Detects panel's hdcp capability. This is optional for HDMI. */
        int (*hdcp_capable)(struct intel_digital_port *intel_dig_port,
                            bool *hdcp_capable);
};

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

        /* ACPI device id for ACPI and driver cooperation */
        u32 acpi_device_id;

        /* 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 *);

        /* 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;

        /* Work struct to schedule a uevent on link train failure */
        struct work_struct modeset_retry_work;

        const struct intel_hdcp_shim *hdcp_shim;
        struct mutex hdcp_mutex;
        uint64_t hdcp_value; /* protected by hdcp_mutex */
        struct delayed_work hdcp_check_work;
        struct work_struct hdcp_prop_work;
};

struct intel_digital_connector_state {
        struct drm_connector_state base;

        enum hdmi_force_audio force_audio;
        int broadcast_rgb;
};

#define to_intel_digital_connector_state(x) container_of(x, struct intel_digital_connector_state, base)

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

struct intel_atomic_state {
        struct drm_atomic_state base;

        struct {
                /*
                 * Logical state of cdclk (used for all scaling, watermark,
                 * etc. calculations and checks). This is computed as if all
                 * enabled crtcs were active.
                 */
                struct intel_cdclk_state logical;

                /*
                 * Actual state of cdclk, can be different from the logical
                 * state only when all crtc's are DPMS off.
                 */
                struct intel_cdclk_state actual;
        } cdclk;

        bool dpll_set, modeset;

        /*
         * Does this transaction change the pipes that are active?  This mask
         * tracks which CRTC's have changed their active state at the end of
         * the transaction (not counting the temporary disable during modesets).
         * This mask should only be non-zero when intel_state->modeset is true,
         * but the converse is not necessarily true; simply changing a mode may
         * not flip the final active status of any CRTC's
         */
        unsigned int active_pipe_changes;

        unsigned int active_crtcs;
        /* minimum acceptable cdclk for each pipe */
        int min_cdclk[I915_MAX_PIPES];
        /* minimum acceptable voltage level for each pipe */
        u8 min_voltage_level[I915_MAX_PIPES];

        struct intel_shared_dpll_state shared_dpll[I915_NUM_PLLS];

        /*
         * Current watermarks can't be trusted during hardware readout, so
         * don't bother calculating intermediate watermarks.
         */
        bool skip_intermediate_wm;

        /* Gen9+ only */
        struct skl_wm_values wm_results;

        struct i915_sw_fence commit_ready;

        struct llist_node freed;
};

struct intel_plane_state {
        struct drm_plane_state base;
        struct i915_vma *vma;
        unsigned long flags;
#define PLANE_HAS_FENCE BIT(0)

        struct {
                u32 offset;
                int x, y;
        } main;
        struct {
                u32 offset;
                int x, y;
        } aux;

        /* plane control register */
        u32 ctl;

        /* plane color control register */
        u32 color_ctl;

        /*
         * scaler_id
         *    = -1 : not using a scaler
         *    >=  0 : using a scalers
         *
         * plane requiring a scaler:
         *   - During check_plane, its bit is set in
         *     crtc_state->scaler_state.scaler_users by calling helper function
         *     update_scaler_plane.
         *   - scaler_id indicates the scaler it got assigned.
         *
         * plane doesn't require a scaler:
         *   - this can happen when scaling is no more required or plane simply
         *     got disabled.
         *   - During check_plane, corresponding bit is reset in
         *     crtc_state->scaler_state.scaler_users by calling helper function
         *     update_scaler_plane.
         */
        int scaler_id;

        struct drm_intel_sprite_colorkey ckey;
};

struct intel_initial_plane_config {
        struct intel_framebuffer *fb;
        unsigned int tiling;
        int size;
        u32 base;
};

#define SKL_MIN_SRC_W 8
#define SKL_MAX_SRC_W 4096
#define SKL_MIN_SRC_H 8
#define SKL_MAX_SRC_H 4096
#define SKL_MIN_DST_W 8
#define SKL_MAX_DST_W 4096
#define SKL_MIN_DST_H 8
#define SKL_MAX_DST_H 4096

struct intel_scaler {
        int in_use;
        uint32_t mode;
};

struct intel_crtc_scaler_state {
#define SKL_NUM_SCALERS 2
        struct intel_scaler scalers[SKL_NUM_SCALERS];

        /*
         * scaler_users: keeps track of users requesting scalers on this crtc.
         *
         *     If a bit is set, a user is using a scaler.
         *     Here user can be a plane or crtc as defined below:
         *       bits 0-30 - plane (bit position is index from drm_plane_index)
         *       bit 31    - crtc
         *
         * Instead of creating a new index to cover planes and crtc, using
         * existing drm_plane_index for planes which is well less than 31
         * planes and bit 31 for crtc. This should be fine to cover all
         * our platforms.
         *
         * intel_atomic_setup_scalers will setup available scalers to users
         * requesting scalers. It will gracefully fail if request exceeds
         * avilability.
         */
#define SKL_CRTC_INDEX 31
        unsigned scaler_users;

        /* scaler used by crtc for panel fitting purpose */
        int scaler_id;
};

/* drm_mode->private_flags */
#define I915_MODE_FLAG_INHERITED 1
/* Flag to get scanline using frame time stamps */
#define I915_MODE_FLAG_GET_SCANLINE_FROM_TIMESTAMP (1<<1)

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 skl_plane_wm {
        struct skl_wm_level wm[8];
        struct skl_wm_level trans_wm;
};

struct skl_pipe_wm {
        struct skl_plane_wm planes[I915_MAX_PLANES];
        uint32_t linetime;
};

enum vlv_wm_level {
        VLV_WM_LEVEL_PM2,
        VLV_WM_LEVEL_PM5,
        VLV_WM_LEVEL_DDR_DVFS,
        NUM_VLV_WM_LEVELS,
};

struct vlv_wm_state {
        struct g4x_pipe_wm wm[NUM_VLV_WM_LEVELS];
        struct g4x_sr_wm sr[NUM_VLV_WM_LEVELS];
        uint8_t num_levels;
        bool cxsr;
};

struct vlv_fifo_state {
        u16 plane[I915_MAX_PLANES];
};

enum g4x_wm_level {
        G4X_WM_LEVEL_NORMAL,
        G4X_WM_LEVEL_SR,
        G4X_WM_LEVEL_HPLL,
        NUM_G4X_WM_LEVELS,
};

struct g4x_wm_state {
        struct g4x_pipe_wm wm;
        struct g4x_sr_wm sr;
        struct g4x_sr_wm hpll;
        bool cxsr;
        bool hpll_en;
        bool fbc_en;
};

struct intel_crtc_wm_state {
        union {
                struct {
                        /*
                         * Intermediate watermarks; these can be
                         * programmed immediately since they satisfy
                         * both the current configuration we're
                         * switching away from and the new
                         * configuration we're switching to.
                         */
                        struct intel_pipe_wm intermediate;

                        /*
                         * Optimal watermarks, programmed post-vblank
                         * when this state is committed.
                         */
                        struct intel_pipe_wm optimal;
                } ilk;

                struct {
                        /* gen9+ only needs 1-step wm programming */
                        struct skl_pipe_wm optimal;
                        struct skl_ddb_entry ddb;
                } skl;

                struct {
                        /* "raw" watermarks (not inverted) */
                        struct g4x_pipe_wm raw[NUM_VLV_WM_LEVELS];
                        /* intermediate watermarks (inverted) */
                        struct vlv_wm_state intermediate;
                        /* optimal watermarks (inverted) */
                        struct vlv_wm_state optimal;
                        /* display FIFO split */
                        struct vlv_fifo_state fifo_state;
                } vlv;

                struct {
                        /* "raw" watermarks */
                        struct g4x_pipe_wm raw[NUM_G4X_WM_LEVELS];
                        /* intermediate watermarks */
                        struct g4x_wm_state intermediate;
                        /* optimal watermarks */
                        struct g4x_wm_state optimal;
                } g4x;
        };

        /*
         * Platforms with two-step watermark programming will need to
         * update watermark programming post-vblank to switch from the
         * safe intermediate watermarks to the optimal final
         * watermarks.
         */
        bool need_postvbl_update;
};

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 */
        unsigned long quirks;

        unsigned fb_bits; /* framebuffers to flip */
        bool update_pipe; /* can a fast modeset be performed? */
        bool disable_cxsr;
        bool update_wm_pre, update_wm_post; /* watermarks are updated */
        bool fb_changed; /* fb on any of the planes is changed */
        bool fifo_changed; /* FIFO split is changed */

        /* 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;

        /*
         * Pipe pixel rate, adjusted for
         * panel fitter/pipe scaler downscaling.
         */
        unsigned int pixel_rate;

        /* 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 and later (where we have a special eDP transcoder)
         * and Broxton (where we have special DSI transcoders). */
        enum transcoder cpu_transcoder;

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

        /* Bitmask of encoder types (enum intel_output_type)
         * driven by the pipe.
         */
        unsigned int output_types;

        /* 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;

        /*
         * Dither gets enabled for 18bpp which causes CRC mismatch errors for
         * compliance video pattern tests.
         * Disable dither only if it is a compliance test request for
         * 18bpp.
         */
        bool dither_force_disable;

        /* 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 NULL. */
        struct intel_shared_dpll *shared_dpll;

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

        /* DSI PLL registers */
        struct {
                u32 ctrl, div;
        } dsi_pll;

        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;

        bool has_psr;
        bool has_psr2;

        /*
         * 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;

        uint8_t lane_count;

        /*
         * Used by platforms having DP/HDMI PHY with programmable lane
         * latency optimization.
         */
        uint8_t lane_lat_optim_mask;

        /* minimum acceptable voltage level */
        u8 min_voltage_level;

        /* 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 ips_force_disable;

        bool enable_fbc;

        bool double_wide;

        int pbn;

        struct intel_crtc_scaler_state scaler_state;

        /* w/a for waiting 2 vblanks during crtc enable */
        enum pipe hsw_workaround_pipe;

        /* IVB sprite scaling w/a (WaCxSRDisabledForSpriteScaling:ivb) */
        bool disable_lp_wm;

        struct intel_crtc_wm_state wm;

        /* Gamma mode programmed on the pipe */
        uint32_t gamma_mode;

        /* bitmask of visible planes (enum plane_id) */
        u8 active_planes;

        /* HDMI scrambling status */
        bool hdmi_scrambling;

        /* HDMI High TMDS char rate ratio */
        bool hdmi_high_tmds_clock_ratio;

        /* output format is YCBCR 4:2:0 */
        bool ycbcr420;
};

struct intel_crtc {
        struct drm_crtc base;
        enum pipe pipe;
        /*
         * 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;
        u8 plane_ids_mask;
        unsigned long long enabled_power_domains;
        struct intel_overlay *overlay;

        struct intel_crtc_state *config;

        /* global reset count when the last flip was submitted */
        unsigned int reset_count;

        /* 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  */
                union {
                        struct intel_pipe_wm ilk;
                        struct vlv_wm_state vlv;
                        struct g4x_wm_state g4x;
                } active;
        } wm;

        int scanline_offset;

        struct {
                unsigned start_vbl_count;
                ktime_t start_vbl_time;
                int min_vbl, max_vbl;
                int scanline_start;
        } debug;

        /* scalers available on this crtc */
        int num_scalers;
};

struct intel_plane {
        struct drm_plane base;
        enum i9xx_plane_id i9xx_plane;
        enum plane_id id;
        enum pipe pipe;
        bool can_scale;
        bool has_fbc;
        int max_downscale;
        uint32_t frontbuffer_bit;

        struct {
                u32 base, cntl, size;
        } cursor;

        /*
         * 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 plane_state.
         */

        void (*update_plane)(struct intel_plane *plane,
                             const struct intel_crtc_state *crtc_state,
                             const struct intel_plane_state *plane_state);
        void (*disable_plane)(struct intel_plane *plane,
                              struct intel_crtc *crtc);
        bool (*get_hw_state)(struct intel_plane *plane);
        int (*check_plane)(struct intel_plane *plane,
                           struct intel_crtc_state *crtc_state,
                           struct intel_plane_state *state);
};

struct intel_watermark_params {
        u16 fifo_size;
        u16 max_wm;
        u8 default_wm;
        u8 guard_size;
        u8 cacheline_size;
};

struct cxsr_latency {
        bool is_desktop : 1;
        bool is_ddr3 : 1;
        u16 fsb_freq;
        u16 mem_freq;
        u16 display_sr;
        u16 display_hpll_disable;
        u16 cursor_sr;
        u16 cursor_hpll_disable;
};

#define to_intel_atomic_state(x) container_of(x, struct intel_atomic_state, base)
#define to_intel_crtc(x) container_of(x, struct intel_crtc, base)
#define to_intel_crtc_state(x) container_of(x, struct intel_crtc_state, 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 {
        i915_reg_t hdmi_reg;
        int ddc_bus;
        struct {
                enum drm_dp_dual_mode_type type;
                int max_tmds_clock;
        } dp_dual_mode;
        bool has_hdmi_sink;

        bool has_audio;
        bool rgb_quant_range_selectable;
        struct intel_connector *attached_connector;
};

struct intel_dp_mst_encoder;
#define DP_MAX_DOWNSTREAM_PORTS         0x10

/*
 * enum link_m_n_set:
 *      When platform provides two set of M_N registers for dp, we can
 *      program them and switch between them incase of DRRS.
 *      But When only one such register is provided, we have to program the
 *      required divider value on that registers itself based on the DRRS state.
 *
 * M1_N1        : Program dp_m_n on M1_N1 registers
 *                        dp_m2_n2 on M2_N2 registers (If supported)
 *
 * M2_N2        : Program dp_m2_n2 on M1_N1 registers
 *                        M2_N2 registers are not supported
 */

enum link_m_n_set {
        /* Sets the m1_n1 and m2_n2 */
        M1_N1 = 0,
        M2_N2
};

struct intel_dp_compliance_data {
        unsigned long edid;
        uint8_t video_pattern;
        uint16_t hdisplay, vdisplay;
        uint8_t bpc;
};

struct intel_dp_compliance {
        unsigned long test_type;
        struct intel_dp_compliance_data test_data;
        bool test_active;
        int test_link_rate;
        u8 test_lane_count;
};

struct intel_dp {
        i915_reg_t output_reg;
        uint32_t DP;
        int link_rate;
        uint8_t lane_count;
        uint8_t sink_count;
        bool link_mst;
        bool link_trained;
        bool has_audio;
        bool detect_done;
        bool reset_link_params;
        enum aux_ch aux_ch;
        uint8_t dpcd[DP_RECEIVER_CAP_SIZE];
        uint8_t psr_dpcd[EDP_PSR_RECEIVER_CAP_SIZE];
        uint8_t downstream_ports[DP_MAX_DOWNSTREAM_PORTS];
        uint8_t edp_dpcd[EDP_DISPLAY_CTL_CAP_SIZE];
        /* source rates */
        int num_source_rates;
        const int *source_rates;
        /* sink rates as reported by DP_MAX_LINK_RATE/DP_SUPPORTED_LINK_RATES */
        int num_sink_rates;
        int sink_rates[DP_MAX_SUPPORTED_RATES];
        bool use_rate_select;
        /* intersection of source and sink rates */
        int num_common_rates;
        int common_rates[DP_MAX_SUPPORTED_RATES];
        /* Max lane count for the current link */
        int max_link_lane_count;
        /* Max rate for the current link */
        int max_link_rate;
        /* sink or branch descriptor */
        struct drm_dp_desc desc;
        struct drm_dp_aux aux;
        enum intel_display_power_domain aux_power_domain;
        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_on;
        unsigned long last_backlight_off;
        ktime_t panel_power_off_time;

        struct notifier_block edp_notifier;

        /*
         * Pipe whose power sequencer is currently locked into
         * this port. Only relevant on VLV/CHV.
         */
        enum pipe pps_pipe;
        /*
         * Pipe currently driving the port. Used for preventing
         * the use of the PPS for any pipe currentrly driving
         * external DP as that will mess things up on VLV.
         */
        enum pipe active_pipe;
        /*
         * Set if the sequencer may be reset due to a power transition,
         * requiring a reinitialization. Only relevant on BXT.
         */
        bool pps_reset;
        struct edp_power_seq pps_delays;

        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);

        i915_reg_t (*aux_ch_ctl_reg)(struct intel_dp *dp);
        i915_reg_t (*aux_ch_data_reg)(struct intel_dp *dp, int index);

        /* This is called before a link training is starterd */
        void (*prepare_link_retrain)(struct intel_dp *intel_dp);

        /* Displayport compliance testing */
        struct intel_dp_compliance compliance;
};

struct intel_lspcon {
        bool active;
        enum drm_lspcon_mode mode;
};

struct intel_digital_port {
        struct intel_encoder base;
        u32 saved_port_bits;
        struct intel_dp dp;
        struct intel_hdmi hdmi;
        struct intel_lspcon lspcon;
        enum irqreturn (*hpd_pulse)(struct intel_digital_port *, bool);
        bool release_cl2_override;
        uint8_t max_lanes;
        enum intel_display_power_domain ddi_io_power_domain;

        void (*write_infoframe)(struct drm_encoder *encoder,
                                const struct intel_crtc_state *crtc_state,
                                unsigned int type,
                                const void *frame, ssize_t len);
        void (*set_infoframes)(struct drm_encoder *encoder,
                               bool enable,
                               const struct intel_crtc_state *crtc_state,
                               const struct drm_connector_state *conn_state);
        bool (*infoframe_enabled)(struct drm_encoder *encoder,
                                  const struct intel_crtc_state *pipe_config);
};

struct intel_dp_mst_encoder {
        struct intel_encoder base;
        enum pipe pipe;
        struct intel_digital_port *primary;
        struct intel_connector *connector;
};

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

static inline enum dpio_phy
vlv_dport_to_phy(struct intel_digital_port *dport)
{
        switch (dport->base.port) {
        case PORT_B:
        case PORT_C:
                return DPIO_PHY0;
        case PORT_D:
                return DPIO_PHY1;
        default:
                BUG();
        }
}

static inline enum dpio_channel
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 intel_crtc *
intel_get_crtc_for_pipe(struct drm_i915_private *dev_priv, enum pipe pipe)
{
        return dev_priv->pipe_to_crtc_mapping[pipe];
}

static inline struct intel_crtc *
intel_get_crtc_for_plane(struct drm_i915_private *dev_priv, enum i9xx_plane_id plane)
{
        return dev_priv->plane_to_crtc_mapping[plane];
}

struct intel_load_detect_pipe {
        struct drm_atomic_state *restore_state;
};

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)
{
        struct intel_encoder *intel_encoder = to_intel_encoder(encoder);

        switch (intel_encoder->type) {
        case INTEL_OUTPUT_DDI:
                WARN_ON(!HAS_DDI(to_i915(encoder->dev)));
        case INTEL_OUTPUT_DP:
        case INTEL_OUTPUT_EDP:
        case INTEL_OUTPUT_HDMI:
                return container_of(encoder, struct intel_digital_port,
                                    base.base);
        default:
                return NULL;
        }
}

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_lspcon *
dp_to_lspcon(struct intel_dp *intel_dp)
{
        return &dp_to_dig_port(intel_dp)->lspcon;
}

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);
}

static inline struct intel_plane_state *
intel_atomic_get_new_plane_state(struct intel_atomic_state *state,
                                 struct intel_plane *plane)
{
        return to_intel_plane_state(drm_atomic_get_new_plane_state(&state->base,
                                                                   &plane->base));
}

static inline struct intel_crtc_state *
intel_atomic_get_old_crtc_state(struct intel_atomic_state *state,
                                struct intel_crtc *crtc)
{
        return to_intel_crtc_state(drm_atomic_get_old_crtc_state(&state->base,
                                                                 &crtc->base));
}

static inline struct intel_crtc_state *
intel_atomic_get_new_crtc_state(struct intel_atomic_state *state,
                                struct intel_crtc *crtc)
{
        return to_intel_crtc_state(drm_atomic_get_new_crtc_state(&state->base,
                                                                 &crtc->base));
}

/* 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 pipe 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 pipe pch_transcoder);
void intel_check_cpu_fifo_underruns(struct drm_i915_private *dev_priv);
void intel_check_pch_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_mask_pm_irq(struct drm_i915_private *dev_priv, u32 mask);
void gen6_unmask_pm_irq(struct drm_i915_private *dev_priv, u32 mask);
void gen6_reset_rps_interrupts(struct drm_i915_private *dev_priv);
void gen6_enable_rps_interrupts(struct drm_i915_private *dev_priv);
void gen6_disable_rps_interrupts(struct drm_i915_private *dev_priv);

static inline u32 gen6_sanitize_rps_pm_mask(const struct drm_i915_private *i915,
                                            u32 mask)
{
        return mask & ~i915->gt_pm.rps.pm_intrmsk_mbz;
}

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->runtime_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,
                                     u8 pipe_mask);
void gen8_irq_power_well_pre_disable(struct drm_i915_private *dev_priv,
                                     u8 pipe_mask);
void gen9_reset_guc_interrupts(struct drm_i915_private *dev_priv);
void gen9_enable_guc_interrupts(struct drm_i915_private *dev_priv);
void gen9_disable_guc_interrupts(struct drm_i915_private *dev_priv);

/* intel_crt.c */
void intel_crt_init(struct drm_i915_private *dev_priv);
void intel_crt_reset(struct drm_encoder *encoder);

/* intel_ddi.c */
void intel_ddi_fdi_post_disable(struct intel_encoder *intel_encoder,
                                const struct intel_crtc_state *old_crtc_state,
                                const struct drm_connector_state *old_conn_state);
void hsw_fdi_link_train(struct intel_crtc *crtc,
                        const struct intel_crtc_state *crtc_state);
void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port);
bool intel_ddi_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe);
void intel_ddi_enable_transcoder_func(const struct intel_crtc_state *crtc_state);
void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv,
                                       enum transcoder cpu_transcoder);
void intel_ddi_enable_pipe_clock(const struct intel_crtc_state *crtc_state);
void intel_ddi_disable_pipe_clock(const  struct intel_crtc_state *crtc_state);
struct intel_encoder *
intel_ddi_get_crtc_new_encoder(struct intel_crtc_state *crtc_state);
void intel_ddi_set_pipe_settings(const struct intel_crtc_state *crtc_state);
void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp);
bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector);
void intel_ddi_get_config(struct intel_encoder *encoder,
                          struct intel_crtc_state *pipe_config);

void intel_ddi_set_vc_payload_alloc(const struct intel_crtc_state *crtc_state,
                                    bool state);
void intel_ddi_compute_min_voltage_level(struct drm_i915_private *dev_priv,
                                         struct intel_crtc_state *crtc_state);
u32 bxt_signal_levels(struct intel_dp *intel_dp);
uint32_t ddi_signal_levels(struct intel_dp *intel_dp);
u8 intel_ddi_dp_voltage_max(struct intel_encoder *encoder);
int intel_ddi_toggle_hdcp_signalling(struct intel_encoder *intel_encoder,
                                     bool enable);

unsigned int intel_fb_align_height(const struct drm_framebuffer *fb,
                                   int plane, unsigned int height);

/* intel_audio.c */
void intel_init_audio_hooks(struct drm_i915_private *dev_priv);
void intel_audio_codec_enable(struct intel_encoder *encoder,
                              const struct intel_crtc_state *crtc_state,
                              const struct drm_connector_state *conn_state);
void intel_audio_codec_disable(struct intel_encoder *encoder,
                               const struct intel_crtc_state *old_crtc_state,
                               const struct drm_connector_state *old_conn_state);
void i915_audio_component_init(struct drm_i915_private *dev_priv);
void i915_audio_component_cleanup(struct drm_i915_private *dev_priv);
void intel_audio_init(struct drm_i915_private *dev_priv);
void intel_audio_deinit(struct drm_i915_private *dev_priv);

/* intel_cdclk.c */
int intel_crtc_compute_min_cdclk(const struct intel_crtc_state *crtc_state);
void skl_init_cdclk(struct drm_i915_private *dev_priv);
void skl_uninit_cdclk(struct drm_i915_private *dev_priv);
void cnl_init_cdclk(struct drm_i915_private *dev_priv);
void cnl_uninit_cdclk(struct drm_i915_private *dev_priv);
void bxt_init_cdclk(struct drm_i915_private *dev_priv);
void bxt_uninit_cdclk(struct drm_i915_private *dev_priv);
void icl_init_cdclk(struct drm_i915_private *dev_priv);
void icl_uninit_cdclk(struct drm_i915_private *dev_priv);
void intel_init_cdclk_hooks(struct drm_i915_private *dev_priv);
void intel_update_max_cdclk(struct drm_i915_private *dev_priv);
void intel_update_cdclk(struct drm_i915_private *dev_priv);
void intel_update_rawclk(struct drm_i915_private *dev_priv);
bool intel_cdclk_needs_modeset(const struct intel_cdclk_state *a,
                               const struct intel_cdclk_state *b);
bool intel_cdclk_changed(const struct intel_cdclk_state *a,
                         const struct intel_cdclk_state *b);
void intel_set_cdclk(struct drm_i915_private *dev_priv,
                     const struct intel_cdclk_state *cdclk_state);
void intel_dump_cdclk_state(const struct intel_cdclk_state *cdclk_state,
                            const char *context);

/* intel_display.c */
void i830_enable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe);
void i830_disable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe);
enum pipe intel_crtc_pch_transcoder(struct intel_crtc *crtc);
void intel_update_rawclk(struct drm_i915_private *dev_priv);
int vlv_get_hpll_vco(struct drm_i915_private *dev_priv);
int vlv_get_cck_clock(struct drm_i915_private *dev_priv,
                      const char *name, u32 reg, int ref_freq);
int vlv_get_cck_clock_hpll(struct drm_i915_private *dev_priv,
                           const char *name, u32 reg);
void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv);
void lpt_disable_iclkip(struct drm_i915_private *dev_priv);
void intel_init_display_hooks(struct drm_i915_private *dev_priv);
unsigned int intel_fb_xy_to_linear(int x, int y,
                                   const struct intel_plane_state *state,
                                   int plane);
void intel_add_fb_offsets(int *x, int *y,
                          const struct intel_plane_state *state, int plane);
unsigned int intel_rotation_info_size(const struct intel_rotation_info *rot_info);
bool intel_has_pending_fb_unpin(struct drm_i915_private *dev_priv);
void intel_mark_busy(struct drm_i915_private *dev_priv);
void intel_mark_idle(struct drm_i915_private *dev_priv);
int intel_display_suspend(struct drm_device *dev);
void intel_pps_unlock_regs_wa(struct drm_i915_private *dev_priv);
void intel_encoder_destroy(struct drm_encoder *encoder);
int intel_connector_init(struct intel_connector *);
struct intel_connector *intel_connector_alloc(void);
void intel_connector_free(struct intel_connector *connector);
bool intel_connector_get_hw_state(struct intel_connector *connector);
void intel_connector_attach_encoder(struct intel_connector *connector,
                                    struct intel_encoder *encoder);
struct drm_display_mode *
intel_encoder_current_mode(struct intel_encoder *encoder);

enum pipe intel_get_pipe_from_connector(struct intel_connector *connector);
int intel_get_pipe_from_crtc_id_ioctl(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);
static inline bool
intel_crtc_has_type(const struct intel_crtc_state *crtc_state,
                    enum intel_output_type type)
{
        return crtc_state->output_types & (1 << type);
}
static inline bool
intel_crtc_has_dp_encoder(const struct intel_crtc_state *crtc_state)
{
        return crtc_state->output_types &
                ((1 << INTEL_OUTPUT_DP) |
                 (1 << INTEL_OUTPUT_DP_MST) |
                 (1 << INTEL_OUTPUT_EDP));
}
static inline void
intel_wait_for_vblank(struct drm_i915_private *dev_priv, enum pipe pipe)
{
        drm_wait_one_vblank(&dev_priv->drm, pipe);
}
static inline void
intel_wait_for_vblank_if_active(struct drm_i915_private *dev_priv, int pipe)
{
        const struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, pipe);

        if (crtc->active)
                intel_wait_for_vblank(dev_priv, pipe);
}

u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc);

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,
                         unsigned int expected_mask);
int intel_get_load_detect_pipe(struct drm_connector *connector,
                               const 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,
                                    struct drm_modeset_acquire_ctx *ctx);
struct i915_vma *
intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb,
                           unsigned int rotation,
                           bool uses_fence,
                           unsigned long *out_flags);
void intel_unpin_fb_vma(struct i915_vma *vma, unsigned long flags);
struct drm_framebuffer *
intel_framebuffer_create(struct drm_i915_gem_object *obj,
                         struct drm_mode_fb_cmd2 *mode_cmd);
int intel_prepare_plane_fb(struct drm_plane *plane,
                           struct drm_plane_state *new_state);
void intel_cleanup_plane_fb(struct drm_plane *plane,
                            struct drm_plane_state *old_state);
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);
int intel_plane_atomic_calc_changes(const struct intel_crtc_state *old_crtc_state,
                                    struct drm_crtc_state *crtc_state,
                                    const struct intel_plane_state *old_plane_state,
                                    struct drm_plane_state *plane_state);

void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv,
                                    enum pipe pipe);

int vlv_force_pll_on(struct drm_i915_private *dev_priv, enum pipe pipe,
                     const struct dpll *dpll);
void vlv_force_pll_off(struct drm_i915_private *dev_priv, enum pipe pipe);
int lpt_get_iclkip(struct drm_i915_private *dev_priv);

/* 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_dsi_pll(struct drm_i915_private *dev_priv, bool state);
#define assert_dsi_pll_enabled(d) assert_dsi_pll(d, true)
#define assert_dsi_pll_disabled(d) assert_dsi_pll(d, 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)
u32 intel_compute_tile_offset(int *x, int *y,
                              const struct intel_plane_state *state, int plane);
void intel_prepare_reset(struct drm_i915_private *dev_priv);
void intel_finish_reset(struct drm_i915_private *dev_priv);
void hsw_enable_pc8(struct drm_i915_private *dev_priv);
void hsw_disable_pc8(struct drm_i915_private *dev_priv);
void gen9_sanitize_dc_state(struct drm_i915_private *dev_priv);
void bxt_enable_dc9(struct drm_i915_private *dev_priv);
void bxt_disable_dc9(struct drm_i915_private *dev_priv);
void gen9_enable_dc5(struct drm_i915_private *dev_priv);
unsigned int skl_cdclk_get_vco(unsigned int freq);
void skl_enable_dc6(struct drm_i915_private *dev_priv);
void skl_disable_dc6(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, enum link_m_n_set m_n);
int intel_dotclock_calculate(int link_freq, const struct intel_link_m_n *m_n);
bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state, int target_clock,
                        struct dpll *best_clock);
int chv_calc_dpll_params(int refclk, struct dpll *pll_clock);

bool intel_crtc_active(struct intel_crtc *crtc);
bool hsw_crtc_state_ips_capable(const struct intel_crtc_state *crtc_state);
void hsw_enable_ips(const struct intel_crtc_state *crtc_state);
void hsw_disable_ips(const struct intel_crtc_state *crtc_state);
enum intel_display_power_domain intel_port_to_power_domain(enum port port);
void intel_mode_from_pipe_config(struct drm_display_mode *mode,
                                 struct intel_crtc_state *pipe_config);

int skl_update_scaler_crtc(struct intel_crtc_state *crtc_state);
int skl_max_scale(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state);

static inline u32 intel_plane_ggtt_offset(const struct intel_plane_state *state)
{
        return i915_ggtt_offset(state->vma);
}

u32 glk_plane_color_ctl(const struct intel_crtc_state *crtc_state,
                        const struct intel_plane_state *plane_state);
u32 skl_plane_ctl(const struct intel_crtc_state *crtc_state,
                  const struct intel_plane_state *plane_state);
u32 glk_color_ctl(const struct intel_plane_state *plane_state);
u32 skl_plane_stride(const struct drm_framebuffer *fb, int plane,
                     unsigned int rotation);
int skl_check_plane_surface(const struct intel_crtc_state *crtc_state,
                            struct intel_plane_state *plane_state);
int i9xx_check_plane_surface(struct intel_plane_state *plane_state);

/* intel_csr.c */
void intel_csr_ucode_init(struct drm_i915_private *);
void intel_csr_load_program(struct drm_i915_private *);
void intel_csr_ucode_fini(struct drm_i915_private *);
void intel_csr_ucode_suspend(struct drm_i915_private *);
void intel_csr_ucode_resume(struct drm_i915_private *);

/* intel_dp.c */
bool intel_dp_init(struct drm_i915_private *dev_priv, i915_reg_t 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_set_link_params(struct intel_dp *intel_dp,
                              int link_rate, uint8_t lane_count,
                              bool link_mst);
int intel_dp_get_link_train_fallback_values(struct intel_dp *intel_dp,
                                            int link_rate, uint8_t lane_count);
void intel_dp_start_link_train(struct intel_dp *intel_dp);
void intel_dp_stop_link_train(struct intel_dp *intel_dp);
int intel_dp_retrain_link(struct intel_encoder *encoder,
                          struct drm_modeset_acquire_ctx *ctx);
void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode);
void intel_dp_encoder_reset(struct drm_encoder *encoder);
void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder);
void intel_dp_encoder_destroy(struct drm_encoder *encoder);
int intel_dp_sink_crc(struct intel_dp *intel_dp,
                      struct intel_crtc_state *crtc_state, u8 *crc);
bool intel_dp_compute_config(struct intel_encoder *encoder,
                             struct intel_crtc_state *pipe_config,
                             struct drm_connector_state *conn_state);
bool intel_dp_is_edp(struct intel_dp *intel_dp);
bool intel_dp_is_port_edp(struct drm_i915_private *dev_priv, enum port port);
enum irqreturn intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port,
                                  bool long_hpd);
void intel_edp_backlight_on(const struct intel_crtc_state *crtc_state,
                            const struct drm_connector_state *conn_state);
void intel_edp_backlight_off(const struct drm_connector_state *conn_state);
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_mst_suspend(struct drm_device *dev);
void intel_dp_mst_resume(struct drm_device *dev);
int intel_dp_max_link_rate(struct intel_dp *intel_dp);
int intel_dp_max_lane_count(struct intel_dp *intel_dp);
int intel_dp_rate_select(struct intel_dp *intel_dp, int rate);
void intel_dp_hot_plug(struct intel_encoder *intel_encoder);
void intel_power_sequencer_reset(struct drm_i915_private *dev_priv);
uint32_t intel_dp_pack_aux(const uint8_t *src, int src_bytes);
void intel_plane_destroy(struct drm_plane *plane);
void intel_edp_drrs_enable(struct intel_dp *intel_dp,
                           const struct intel_crtc_state *crtc_state);
void intel_edp_drrs_disable(struct intel_dp *intel_dp,
                            const struct intel_crtc_state *crtc_state);
void intel_edp_drrs_invalidate(struct drm_i915_private *dev_priv,
                               unsigned int frontbuffer_bits);
void intel_edp_drrs_flush(struct drm_i915_private *dev_priv,
                          unsigned int frontbuffer_bits);

void
intel_dp_program_link_training_pattern(struct intel_dp *intel_dp,
                                       uint8_t dp_train_pat);
void
intel_dp_set_signal_levels(struct intel_dp *intel_dp);
void intel_dp_set_idle_link_train(struct intel_dp *intel_dp);
uint8_t
intel_dp_voltage_max(struct intel_dp *intel_dp);
uint8_t
intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing);
void intel_dp_compute_rate(struct intel_dp *intel_dp, int port_clock,
                           uint8_t *link_bw, uint8_t *rate_select);
bool intel_dp_source_supports_hbr2(struct intel_dp *intel_dp);
bool
intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]);

static inline unsigned int intel_dp_unused_lane_mask(int lane_count)
{
        return ~((1 << lane_count) - 1) & 0xf;
}

bool intel_dp_read_dpcd(struct intel_dp *intel_dp);
int intel_dp_link_required(int pixel_clock, int bpp);
int intel_dp_max_data_rate(int max_link_clock, int max_lanes);
bool intel_digital_port_connected(struct intel_encoder *encoder);

/* intel_dp_aux_backlight.c */
int intel_dp_aux_init_backlight_funcs(struct intel_connector *intel_connector);

/* 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_i915_private *dev_priv);

/* intel_dsi_dcs_backlight.c */
int intel_dsi_dcs_init_backlight_funcs(struct intel_connector *intel_connector);

/* intel_dvo.c */
void intel_dvo_init(struct drm_i915_private *dev_priv);
/* intel_hotplug.c */
void intel_hpd_poll_init(struct drm_i915_private *dev_priv);
bool intel_encoder_hotplug(struct intel_encoder *encoder,
                           struct intel_connector *connector);

/* legacy fbdev emulation in intel_fbdev.c */
#ifdef CONFIG_DRM_FBDEV_EMULATION
extern int intel_fbdev_init(struct drm_device *dev);
extern void intel_fbdev_initial_config_async(struct drm_device *dev);
extern void intel_fbdev_unregister(struct drm_i915_private *dev_priv);
extern void intel_fbdev_fini(struct drm_i915_private *dev_priv);
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_async(struct drm_device *dev)
{
}

static inline void intel_fbdev_unregister(struct drm_i915_private *dev_priv)
{
}

static inline void intel_fbdev_fini(struct drm_i915_private *dev_priv)
{
}

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

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

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

/* intel_fbc.c */
void intel_fbc_choose_crtc(struct drm_i915_private *dev_priv,
                           struct intel_atomic_state *state);
bool intel_fbc_is_active(struct drm_i915_private *dev_priv);
void intel_fbc_pre_update(struct intel_crtc *crtc,
                          struct intel_crtc_state *crtc_state,
                          struct intel_plane_state *plane_state);
void intel_fbc_post_update(struct intel_crtc *crtc);
void intel_fbc_init(struct drm_i915_private *dev_priv);
void intel_fbc_init_pipe_state(struct drm_i915_private *dev_priv);
void intel_fbc_enable(struct intel_crtc *crtc,
                      struct intel_crtc_state *crtc_state,
                      struct intel_plane_state *plane_state);
void intel_fbc_disable(struct intel_crtc *crtc);
void intel_fbc_global_disable(struct drm_i915_private *dev_priv);
void intel_fbc_invalidate(struct drm_i915_private *dev_priv,
                          unsigned int frontbuffer_bits,
                          enum fb_op_origin origin);
void intel_fbc_flush(struct drm_i915_private *dev_priv,
                     unsigned int frontbuffer_bits, enum fb_op_origin origin);
void intel_fbc_cleanup_cfb(struct drm_i915_private *dev_priv);
void intel_fbc_handle_fifo_underrun_irq(struct drm_i915_private *dev_priv);

/* intel_hdmi.c */
void intel_hdmi_init(struct drm_i915_private *dev_priv, i915_reg_t 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,
                               struct drm_connector_state *conn_state);
void intel_hdmi_handle_sink_scrambling(struct intel_encoder *intel_encoder,
                                       struct drm_connector *connector,
                                       bool high_tmds_clock_ratio,
                                       bool scrambling);
void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi *hdmi, bool enable);
void intel_infoframe_init(struct intel_digital_port *intel_dig_port);


/* intel_lvds.c */
void intel_lvds_init(struct drm_i915_private *dev_priv);
struct intel_encoder *intel_get_lvds_encoder(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);
void intel_attach_aspect_ratio_property(struct drm_connector *connector);


/* intel_overlay.c */
void intel_setup_overlay(struct drm_i915_private *dev_priv);
void intel_cleanup_overlay(struct drm_i915_private *dev_priv);
int intel_overlay_switch_off(struct intel_overlay *overlay);
int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data,
                                  struct drm_file *file_priv);
int intel_overlay_attrs_ioctl(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 *alt_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(const struct drm_connector_state *conn_state,
                                    u32 level, u32 max);
int intel_panel_setup_backlight(struct drm_connector *connector,
                                enum pipe pipe);
void intel_panel_enable_backlight(const struct intel_crtc_state *crtc_state,
                                  const struct drm_connector_state *conn_state);
void intel_panel_disable_backlight(const struct drm_connector_state *old_conn_state);
void intel_panel_destroy_backlight(struct drm_connector *connector);
enum drm_connector_status intel_panel_detect(struct drm_i915_private *dev_priv);
extern struct drm_display_mode *intel_find_panel_downclock(
                                struct drm_i915_private *dev_priv,
                                struct drm_display_mode *fixed_mode,
                                struct drm_connector *connector);

#if IS_ENABLED(CONFIG_BACKLIGHT_CLASS_DEVICE)
int intel_backlight_device_register(struct intel_connector *connector);
void intel_backlight_device_unregister(struct intel_connector *connector);
#else /* CONFIG_BACKLIGHT_CLASS_DEVICE */
static inline int intel_backlight_device_register(struct intel_connector *connector)
{
        return 0;
}
static inline void intel_backlight_device_unregister(struct intel_connector *connector)
{
}
#endif /* CONFIG_BACKLIGHT_CLASS_DEVICE */

/* intel_hdcp.c */
void intel_hdcp_atomic_check(struct drm_connector *connector,
                             struct drm_connector_state *old_state,
                             struct drm_connector_state *new_state);
int intel_hdcp_init(struct intel_connector *connector,
                    const struct intel_hdcp_shim *hdcp_shim);
int intel_hdcp_enable(struct intel_connector *connector);
int intel_hdcp_disable(struct intel_connector *connector);
int intel_hdcp_check_link(struct intel_connector *connector);
bool is_hdcp_supported(struct drm_i915_private *dev_priv, enum port port);

/* intel_psr.c */
#define CAN_PSR(dev_priv) (HAS_PSR(dev_priv) && dev_priv->psr.sink_support)
void intel_psr_init_dpcd(struct intel_dp *intel_dp);
void intel_psr_enable(struct intel_dp *intel_dp,
                      const struct intel_crtc_state *crtc_state);
void intel_psr_disable(struct intel_dp *intel_dp,
                      const struct intel_crtc_state *old_crtc_state);
void intel_psr_invalidate(struct drm_i915_private *dev_priv,
                          unsigned frontbuffer_bits);
void intel_psr_flush(struct drm_i915_private *dev_priv,
                     unsigned frontbuffer_bits,
                     enum fb_op_origin origin);
void intel_psr_init(struct drm_i915_private *dev_priv);
void intel_psr_single_frame_update(struct drm_i915_private *dev_priv,
                                   unsigned frontbuffer_bits);
void intel_psr_compute_config(struct intel_dp *intel_dp,
                              struct intel_crtc_state *crtc_state);

/* 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, bool resume);
void intel_power_domains_suspend(struct drm_i915_private *dev_priv);
void intel_power_domains_verify_state(struct drm_i915_private *dev_priv);
void bxt_display_core_init(struct drm_i915_private *dev_priv, bool resume);
void bxt_display_core_uninit(struct drm_i915_private *dev_priv);
void intel_runtime_pm_enable(struct drm_i915_private *dev_priv);
const char *
intel_display_power_domain_str(enum intel_display_power_domain domain);

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);
bool intel_display_power_get_if_enabled(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);

static inline void
assert_rpm_device_not_suspended(struct drm_i915_private *dev_priv)
{
        WARN_ONCE(dev_priv->runtime_pm.suspended,
                  "Device suspended during HW access\n");
}

static inline void
assert_rpm_wakelock_held(struct drm_i915_private *dev_priv)
{
        assert_rpm_device_not_suspended(dev_priv);
        WARN_ONCE(!atomic_read(&dev_priv->runtime_pm.wakeref_count),
                  "RPM wakelock ref not held during HW access");
}

/**
 * disable_rpm_wakeref_asserts - disable the RPM assert checks
 * @dev_priv: i915 device instance
 *
 * This function disable asserts that check if we hold an RPM wakelock
 * reference, while keeping the device-not-suspended checks still enabled.
 * It's meant to be used only in special circumstances where our rule about
 * the wakelock refcount wrt. the device power state doesn't hold. According
 * to this rule at any point where we access the HW or want to keep the HW in
 * an active state we must hold an RPM wakelock reference acquired via one of
 * the intel_runtime_pm_get() helpers. Currently there are a few special spots
 * where this rule doesn't hold: the IRQ and suspend/resume handlers, the
 * forcewake release timer, and the GPU RPS and hangcheck works. All other
 * users should avoid using this function.
 *
 * Any calls to this function must have a symmetric call to
 * enable_rpm_wakeref_asserts().
 */
static inline void
disable_rpm_wakeref_asserts(struct drm_i915_private *dev_priv)
{
        atomic_inc(&dev_priv->runtime_pm.wakeref_count);
}

/**
 * enable_rpm_wakeref_asserts - re-enable the RPM assert checks
 * @dev_priv: i915 device instance
 *
 * This function re-enables the RPM assert checks after disabling them with
 * disable_rpm_wakeref_asserts. It's meant to be used only in special
 * circumstances otherwise its use should be avoided.
 *
 * Any calls to this function must have a symmetric call to
 * disable_rpm_wakeref_asserts().
 */
static inline void
enable_rpm_wakeref_asserts(struct drm_i915_private *dev_priv)
{
        atomic_dec(&dev_priv->runtime_pm.wakeref_count);
}

void intel_runtime_pm_get(struct drm_i915_private *dev_priv);
bool intel_runtime_pm_get_if_in_use(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);

void chv_phy_powergate_lanes(struct intel_encoder *encoder,
                             bool override, unsigned int mask);
bool chv_phy_powergate_ch(struct drm_i915_private *dev_priv, enum dpio_phy phy,
                          enum dpio_channel ch, bool override);


/* intel_pm.c */
void intel_init_clock_gating(struct drm_i915_private *dev_priv);
void intel_suspend_hw(struct drm_i915_private *dev_priv);
int ilk_wm_max_level(const struct drm_i915_private *dev_priv);
void intel_update_watermarks(struct intel_crtc *crtc);
void intel_init_pm(struct drm_i915_private *dev_priv);
void intel_init_clock_gating_hooks(struct drm_i915_private *dev_priv);
void intel_pm_setup(struct drm_i915_private *dev_priv);
void intel_gpu_ips_init(struct drm_i915_private *dev_priv);
void intel_gpu_ips_teardown(void);
void intel_init_gt_powersave(struct drm_i915_private *dev_priv);
void intel_cleanup_gt_powersave(struct drm_i915_private *dev_priv);
void intel_sanitize_gt_powersave(struct drm_i915_private *dev_priv);
void intel_enable_gt_powersave(struct drm_i915_private *dev_priv);
void intel_disable_gt_powersave(struct drm_i915_private *dev_priv);
void intel_suspend_gt_powersave(struct drm_i915_private *dev_priv);
void gen6_rps_busy(struct drm_i915_private *dev_priv);
void gen6_rps_reset_ei(struct drm_i915_private *dev_priv);
void gen6_rps_idle(struct drm_i915_private *dev_priv);

void gen6_rps_boost(struct i915_request *rq, struct intel_rps_client *rps);
void g4x_wm_get_hw_state(struct drm_device *dev);
void vlv_wm_get_hw_state(struct drm_device *dev);
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 */);
void skl_pipe_wm_get_hw_state(struct drm_crtc *crtc,
                              struct skl_pipe_wm *out);
void g4x_wm_sanitize(struct drm_i915_private *dev_priv);
void vlv_wm_sanitize(struct drm_i915_private *dev_priv);
bool intel_can_enable_sagv(struct drm_atomic_state *state);
int intel_enable_sagv(struct drm_i915_private *dev_priv);
int intel_disable_sagv(struct drm_i915_private *dev_priv);
bool skl_wm_level_equals(const struct skl_wm_level *l1,
                         const struct skl_wm_level *l2);
bool skl_ddb_allocation_overlaps(struct drm_i915_private *dev_priv,
                                 const struct skl_ddb_entry **entries,
                                 const struct skl_ddb_entry *ddb,
                                 int ignore);
bool ilk_disable_lp_wm(struct drm_device *dev);
int skl_check_pipe_max_pixel_rate(struct intel_crtc *intel_crtc,
                                  struct intel_crtc_state *cstate);
void intel_init_ipc(struct drm_i915_private *dev_priv);
void intel_enable_ipc(struct drm_i915_private *dev_priv);

/* intel_sdvo.c */
bool intel_sdvo_init(struct drm_i915_private *dev_priv,
                     i915_reg_t reg, enum port port);


/* intel_sprite.c */
bool intel_format_is_yuv(u32 format);
int intel_usecs_to_scanlines(const struct drm_display_mode *adjusted_mode,
                             int usecs);
struct intel_plane *intel_sprite_plane_create(struct drm_i915_private *dev_priv,
                                              enum pipe pipe, int plane);
int intel_sprite_set_colorkey_ioctl(struct drm_device *dev, void *data,
                                    struct drm_file *file_priv);
void intel_pipe_update_start(const struct intel_crtc_state *new_crtc_state);
void intel_pipe_update_end(struct intel_crtc_state *new_crtc_state);
void skl_update_plane(struct intel_plane *plane,
                      const struct intel_crtc_state *crtc_state,
                      const struct intel_plane_state *plane_state);
void skl_disable_plane(struct intel_plane *plane, struct intel_crtc *crtc);
bool skl_plane_get_hw_state(struct intel_plane *plane);
bool skl_plane_has_ccs(struct drm_i915_private *dev_priv,
                       enum pipe pipe, enum plane_id plane_id);

/* intel_tv.c */
void intel_tv_init(struct drm_i915_private *dev_priv);

/* intel_atomic.c */
int intel_digital_connector_atomic_get_property(struct drm_connector *connector,
                                                const struct drm_connector_state *state,
                                                struct drm_property *property,
                                                uint64_t *val);
int intel_digital_connector_atomic_set_property(struct drm_connector *connector,
                                                struct drm_connector_state *state,
                                                struct drm_property *property,
                                                uint64_t val);
int intel_digital_connector_atomic_check(struct drm_connector *conn,
                                         struct drm_connector_state *new_state);
struct drm_connector_state *
intel_digital_connector_duplicate_state(struct drm_connector *connector);

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);
struct drm_atomic_state *intel_atomic_state_alloc(struct drm_device *dev);
void intel_atomic_state_clear(struct drm_atomic_state *);

static inline struct intel_crtc_state *
intel_atomic_get_crtc_state(struct drm_atomic_state *state,
                            struct intel_crtc *crtc)
{
        struct drm_crtc_state *crtc_state;
        crtc_state = drm_atomic_get_crtc_state(state, &crtc->base);
        if (IS_ERR(crtc_state))
                return ERR_CAST(crtc_state);

        return to_intel_crtc_state(crtc_state);
}

static inline struct intel_crtc_state *
intel_atomic_get_existing_crtc_state(struct drm_atomic_state *state,
                                     struct intel_crtc *crtc)
{
        struct drm_crtc_state *crtc_state;

        crtc_state = drm_atomic_get_existing_crtc_state(state, &crtc->base);

        if (crtc_state)
                return to_intel_crtc_state(crtc_state);
        else
                return NULL;
}

static inline struct intel_plane_state *
intel_atomic_get_existing_plane_state(struct drm_atomic_state *state,
                                      struct intel_plane *plane)
{
        struct drm_plane_state *plane_state;

        plane_state = drm_atomic_get_existing_plane_state(state, &plane->base);

        return to_intel_plane_state(plane_state);
}

int intel_atomic_setup_scalers(struct drm_i915_private *dev_priv,
                               struct intel_crtc *intel_crtc,
                               struct intel_crtc_state *crtc_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;
int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_state,
                                        struct intel_crtc_state *crtc_state,
                                        const struct intel_plane_state *old_plane_state,
                                        struct intel_plane_state *intel_state);

/* intel_color.c */
void intel_color_init(struct drm_crtc *crtc);
int intel_color_check(struct drm_crtc *crtc, struct drm_crtc_state *state);
void intel_color_set_csc(struct drm_crtc_state *crtc_state);
void intel_color_load_luts(struct drm_crtc_state *crtc_state);

/* intel_lspcon.c */
bool lspcon_init(struct intel_digital_port *intel_dig_port);
void lspcon_resume(struct intel_lspcon *lspcon);
void lspcon_wait_pcon_mode(struct intel_lspcon *lspcon);

/* intel_pipe_crc.c */
int intel_pipe_crc_create(struct drm_minor *minor);
#ifdef CONFIG_DEBUG_FS
int intel_crtc_set_crc_source(struct drm_crtc *crtc, const char *source_name,
                              size_t *values_cnt);
#else
#define intel_crtc_set_crc_source NULL
#endif
extern const struct file_operations i915_display_crc_ctl_fops;
#endif /* __INTEL_DRV_H__ */