intel_drv.h

/*
 * 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/i2c.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_helper.h>

/**
 * _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 */
#define INTELFB_CONN_LIMIT 4

#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 */
#define INTEL_OUTPUT_UNUSED 0
#define INTEL_OUTPUT_ANALOG 1
#define INTEL_OUTPUT_DVO 2
#define INTEL_OUTPUT_SDVO 3
#define INTEL_OUTPUT_LVDS 4
#define INTEL_OUTPUT_TVOUT 5
#define INTEL_OUTPUT_HDMI 6
#define INTEL_OUTPUT_DISPLAYPORT 7
#define INTEL_OUTPUT_EDP 8
#define INTEL_OUTPUT_UNKNOWN 9

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

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

struct intel_fbdev {
	struct drm_fb_helper helper;
	struct intel_framebuffer ifb;
	struct list_head fbdev_list;
	struct drm_display_mode *our_mode;
};

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;

	int type;
	bool needs_tv_clock;
	/*
	 * Intel hw has only one MUX where encoders could be clone, hence a
	 * simple flag is enough to compute the possible_clones mask.
	 */
	bool cloneable;
	bool connectors_active;
	void (*hot_plug)(struct intel_encoder *);
	bool (*compute_config)(struct intel_encoder *,
			       struct intel_crtc_config *);
	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);
	int crtc_mask;
	enum hpd_pin hpd_pin;
};

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

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 *);

	/* 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;

	/* 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;
};

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_crtc_config {
	struct drm_display_mode requested_mode;
	struct drm_display_mode adjusted_mode;
	/* This flag must be set by the encoder's compute_config callback if it
	 * changes the crtc timings in the mode to prevent the crtc fixup from
	 * overwriting them.  Currently only lvds needs that. */
	bool timings_set;
	/* Whether to set up the PCH/FDI. Note that we never allow sharing
	 * between pch encoders and cpu encoders. */
	bool has_pch_encoder;

	/* 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;

	/*
	 * 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;

	/*
	 * 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;

	int pipe_bpp;
	struct intel_link_m_n dp_m_n;
	/**
	 * This is currently used by DP and HDMI encoders since those can have a
	 * target pixel clock != the port link clock (which is currently stored
	 * in adjusted_mode->clock).
	 */
	int pixel_target_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;
	} pch_pfit;

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

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;
	bool eld_vld;
	bool primary_disabled; /* is the crtc obscured by a plane? */
	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_x, cursor_y;
	int16_t cursor_width, cursor_height;
	bool cursor_visible;

	struct intel_crtc_config config;

	/* We can share PLLs across outputs if the timings match */
	struct intel_pch_pll *pch_pll;
	uint32_t ddi_pll_sel;

	/* 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;
};

struct intel_plane {
	struct drm_plane base;
	int plane;
	enum pipe pipe;
	struct drm_i915_gem_object *obj;
	bool can_scale;
	int max_downscale;
	u32 lut_r[1024], lut_g[1024], lut_b[1024];
	int crtc_x, crtc_y;
	unsigned int crtc_w, crtc_h;
	uint32_t src_x, src_y;
	uint32_t src_w, src_h;
	void (*update_plane)(struct drm_plane *plane,
			     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);
	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 DIP_HEADER_SIZE	5

#define DIP_TYPE_AVI    0x82
#define DIP_VERSION_AVI 0x2
#define DIP_LEN_AVI     13
#define DIP_AVI_PR_1    0
#define DIP_AVI_PR_2    1
#define DIP_AVI_RGB_QUANT_RANGE_DEFAULT	(0 << 2)
#define DIP_AVI_RGB_QUANT_RANGE_LIMITED	(1 << 2)
#define DIP_AVI_RGB_QUANT_RANGE_FULL	(2 << 2)

#define DIP_TYPE_SPD	0x83
#define DIP_VERSION_SPD	0x1
#define DIP_LEN_SPD	25
#define DIP_SPD_UNKNOWN	0
#define DIP_SPD_DSTB	0x1
#define DIP_SPD_DVDP	0x2
#define DIP_SPD_DVHS	0x3
#define DIP_SPD_HDDVR	0x4
#define DIP_SPD_DVC	0x5
#define DIP_SPD_DSC	0x6
#define DIP_SPD_VCD	0x7
#define DIP_SPD_GAME	0x8
#define DIP_SPD_PC	0x9
#define DIP_SPD_BD	0xa
#define DIP_SPD_SCD	0xb

struct dip_infoframe {
	uint8_t type;		/* HB0 */
	uint8_t ver;		/* HB1 */
	uint8_t len;		/* HB2 - body len, not including checksum */
	uint8_t ecc;		/* Header ECC */
	uint8_t checksum;	/* PB0 */
	union {
		struct {
			/* PB1 - Y 6:5, A 4:4, B 3:2, S 1:0 */
			uint8_t Y_A_B_S;
			/* PB2 - C 7:6, M 5:4, R 3:0 */
			uint8_t C_M_R;
			/* PB3 - ITC 7:7, EC 6:4, Q 3:2, SC 1:0 */
			uint8_t ITC_EC_Q_SC;
			/* PB4 - VIC 6:0 */
			uint8_t VIC;
			/* PB5 - YQ 7:6, CN 5:4, PR 3:0 */
			uint8_t YQ_CN_PR;
			/* PB6 to PB13 */
			uint16_t top_bar_end;
			uint16_t bottom_bar_start;
			uint16_t left_bar_end;
			uint16_t right_bar_start;
		} __attribute__ ((packed)) avi;
		struct {
			uint8_t vn[8];
			uint8_t pd[16];
			uint8_t sdi;
		} __attribute__ ((packed)) spd;
		uint8_t payload[27];
	} __attribute__ ((packed)) body;
} __attribute__((packed));

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;
	void (*write_infoframe)(struct drm_encoder *encoder,
				struct dip_infoframe *frame);
	void (*set_infoframes)(struct drm_encoder *encoder,
			       struct drm_display_mode *adjusted_mode);
};

#define DP_MAX_DOWNSTREAM_PORTS		0x10
#define DP_LINK_CONFIGURATION_SIZE	9

struct intel_dp {
	uint32_t output_reg;
	uint32_t aux_ch_ctl_reg;
	uint32_t DP;
	uint8_t  link_configuration[DP_LINK_CONFIGURATION_SIZE];
	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 downstream_ports[DP_MAX_DOWNSTREAM_PORTS];
	struct i2c_adapter adapter;
	struct i2c_algo_dp_aux_data algo;
	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;
	struct intel_connector *attached_connector;
};

struct intel_digital_port {
	struct intel_encoder base;
	enum port port;
	u32 port_reversal;
	struct intel_dp dp;
	struct intel_hdmi hdmi;
};

static inline int
vlv_dport_to_channel(struct intel_digital_port *dport)
{
	switch (dport->port) {
	case PORT_B:
		return 0;
	case PORT_C:
		return 1;
	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
	bool enable_stall_check;
};

struct intel_fbc_work {
	struct delayed_work work;
	struct drm_crtc *crtc;
	struct drm_framebuffer *fb;
	int interval;
};

int intel_pch_rawclk(struct drm_device *dev);

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);

extern void intel_attach_force_audio_property(struct drm_connector *connector);
extern void intel_attach_broadcast_rgb_property(struct drm_connector *connector);

extern bool intel_pipe_has_type(struct drm_crtc *crtc, int type);
extern void intel_crt_init(struct drm_device *dev);
extern void intel_hdmi_init(struct drm_device *dev,
			    int hdmi_reg, enum port port);
extern void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
				      struct intel_connector *intel_connector);
extern struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder);
extern bool intel_hdmi_compute_config(struct intel_encoder *encoder,
				      struct intel_crtc_config *pipe_config);
extern void intel_dip_infoframe_csum(struct dip_infoframe *avi_if);
extern bool intel_sdvo_init(struct drm_device *dev, uint32_t sdvo_reg,
			    bool is_sdvob);
extern void intel_dvo_init(struct drm_device *dev);
extern void intel_tv_init(struct drm_device *dev);
extern void intel_mark_busy(struct drm_device *dev);
extern void intel_mark_fb_busy(struct drm_i915_gem_object *obj);
extern void intel_mark_idle(struct drm_device *dev);
extern bool intel_lvds_init(struct drm_device *dev);
extern bool intel_is_dual_link_lvds(struct drm_device *dev);
extern void intel_dp_init(struct drm_device *dev, int output_reg,
			  enum port port);
extern void intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
				    struct intel_connector *intel_connector);
extern void intel_dp_init_link_config(struct intel_dp *intel_dp);
extern void intel_dp_start_link_train(struct intel_dp *intel_dp);
extern void intel_dp_complete_link_train(struct intel_dp *intel_dp);
extern void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode);
extern void intel_dp_encoder_destroy(struct drm_encoder *encoder);
extern void intel_dp_check_link_status(struct intel_dp *intel_dp);
extern bool intel_dp_compute_config(struct intel_encoder *encoder,
				    struct intel_crtc_config *pipe_config);
extern bool intel_dpd_is_edp(struct drm_device *dev);
extern void ironlake_edp_backlight_on(struct intel_dp *intel_dp);
extern void ironlake_edp_backlight_off(struct intel_dp *intel_dp);
extern void ironlake_edp_panel_on(struct intel_dp *intel_dp);
extern void ironlake_edp_panel_off(struct intel_dp *intel_dp);
extern void ironlake_edp_panel_vdd_on(struct intel_dp *intel_dp);
extern void ironlake_edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync);
extern int intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane);
extern void intel_flush_display_plane(struct drm_i915_private *dev_priv,
				      enum plane plane);

/* intel_panel.c */
extern int intel_panel_init(struct intel_panel *panel,
			    struct drm_display_mode *fixed_mode);
extern void intel_panel_fini(struct intel_panel *panel);

extern void intel_fixed_panel_mode(struct drm_display_mode *fixed_mode,
				   struct drm_display_mode *adjusted_mode);
extern void intel_pch_panel_fitting(struct intel_crtc *crtc,
				    struct intel_crtc_config *pipe_config,
				    int fitting_mode);
extern void intel_gmch_panel_fitting(struct intel_crtc *crtc,
				     struct intel_crtc_config *pipe_config,
				     int fitting_mode);
extern void intel_panel_set_backlight(struct drm_device *dev,
				      u32 level, u32 max);
extern int intel_panel_setup_backlight(struct drm_connector *connector);
extern void intel_panel_enable_backlight(struct drm_device *dev,
					 enum pipe pipe);
extern void intel_panel_disable_backlight(struct drm_device *dev);
extern void intel_panel_destroy_backlight(struct drm_device *dev);
extern enum drm_connector_status intel_panel_detect(struct drm_device *dev);

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

	bool fb_changed;
	bool mode_changed;
};

extern int intel_set_mode(struct drm_crtc *crtc, struct drm_display_mode *mode,
			  int x, int y, struct drm_framebuffer *old_fb);
extern void intel_modeset_disable(struct drm_device *dev);
extern void intel_crtc_restore_mode(struct drm_crtc *crtc);
extern void intel_crtc_load_lut(struct drm_crtc *crtc);
extern void intel_crtc_update_dpms(struct drm_crtc *crtc);
extern void intel_encoder_destroy(struct drm_encoder *encoder);
extern void intel_encoder_dpms(struct intel_encoder *encoder, int mode);
extern bool intel_encoder_check_is_cloned(struct intel_encoder *encoder);
extern void intel_connector_dpms(struct drm_connector *, int mode);
extern bool intel_connector_get_hw_state(struct intel_connector *connector);
extern void intel_modeset_check_state(struct drm_device *dev);
extern void intel_plane_restore(struct drm_plane *plane);


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 *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);
}

bool ibx_digital_port_connected(struct drm_i915_private *dev_priv,
				struct intel_digital_port *port);

extern void intel_connector_attach_encoder(struct intel_connector *connector,
					   struct intel_encoder *encoder);
extern struct drm_encoder *intel_best_encoder(struct drm_connector *connector);

extern struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
						    struct drm_crtc *crtc);
int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
				struct drm_file *file_priv);
extern enum transcoder
intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
			     enum pipe pipe);
extern void intel_wait_for_vblank(struct drm_device *dev, int pipe);
extern void intel_wait_for_pipe_off(struct drm_device *dev, int pipe);
extern int ironlake_get_lanes_required(int target_clock, int link_bw, int bpp);
extern void vlv_wait_port_ready(struct drm_i915_private *dev_priv, int port);

struct intel_load_detect_pipe {
	struct drm_framebuffer *release_fb;
	bool load_detect_temp;
	int dpms_mode;
};
extern bool intel_get_load_detect_pipe(struct drm_connector *connector,
				       struct drm_display_mode *mode,
				       struct intel_load_detect_pipe *old);
extern void intel_release_load_detect_pipe(struct drm_connector *connector,
					   struct intel_load_detect_pipe *old);

extern void intelfb_restore(void);
extern void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
				    u16 blue, int regno);
extern void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
				    u16 *blue, int regno);
extern void intel_enable_clock_gating(struct drm_device *dev);

extern int intel_pin_and_fence_fb_obj(struct drm_device *dev,
				      struct drm_i915_gem_object *obj,
				      struct intel_ring_buffer *pipelined);
extern void intel_unpin_fb_obj(struct drm_i915_gem_object *obj);

extern int intel_framebuffer_init(struct drm_device *dev,
				  struct intel_framebuffer *ifb,
				  struct drm_mode_fb_cmd2 *mode_cmd,
				  struct drm_i915_gem_object *obj);
extern int intel_fbdev_init(struct drm_device *dev);
extern void intel_fbdev_initial_config(struct drm_device *dev);
extern void intel_fbdev_fini(struct drm_device *dev);
extern void intel_fbdev_set_suspend(struct drm_device *dev, int state);
extern void intel_prepare_page_flip(struct drm_device *dev, int plane);
extern void intel_finish_page_flip(struct drm_device *dev, int pipe);
extern void intel_finish_page_flip_plane(struct drm_device *dev, int plane);

extern void intel_setup_overlay(struct drm_device *dev);
extern void intel_cleanup_overlay(struct drm_device *dev);
extern int intel_overlay_switch_off(struct intel_overlay *overlay);
extern int intel_overlay_put_image(struct drm_device *dev, void *data,
				   struct drm_file *file_priv);
extern int intel_overlay_attrs(struct drm_device *dev, void *data,
			       struct drm_file *file_priv);

extern void intel_fb_output_poll_changed(struct drm_device *dev);
extern void intel_fb_restore_mode(struct drm_device *dev);

extern 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)

extern void intel_init_clock_gating(struct drm_device *dev);
extern void intel_suspend_hw(struct drm_device *dev);
extern void intel_write_eld(struct drm_encoder *encoder,
			    struct drm_display_mode *mode);
extern void intel_prepare_ddi(struct drm_device *dev);
extern void hsw_fdi_link_train(struct drm_crtc *crtc);
extern void intel_ddi_init(struct drm_device *dev, enum port port);

/* For use by IVB LP watermark workaround in intel_sprite.c */
extern void intel_update_watermarks(struct drm_device *dev);
extern void intel_update_sprite_watermarks(struct drm_device *dev, int pipe,
					   uint32_t sprite_width,
					   int pixel_size);
extern void intel_update_linetime_watermarks(struct drm_device *dev, int pipe,
			 struct drm_display_mode *mode);

extern unsigned long intel_gen4_compute_page_offset(int *x, int *y,
						    unsigned int tiling_mode,
						    unsigned int bpp,
						    unsigned int pitch);

extern int intel_sprite_set_colorkey(struct drm_device *dev, void *data,
				     struct drm_file *file_priv);
extern int intel_sprite_get_colorkey(struct drm_device *dev, void *data,
				     struct drm_file *file_priv);

extern u32 intel_dpio_read(struct drm_i915_private *dev_priv, int reg);
extern void intel_dpio_write(struct drm_i915_private *dev_priv, int reg,
			     u32 val);

/* Power-related functions, located in intel_pm.c */
extern void intel_init_pm(struct drm_device *dev);
/* FBC */
extern bool intel_fbc_enabled(struct drm_device *dev);
extern void intel_enable_fbc(struct drm_crtc *crtc, unsigned long interval);
extern void intel_update_fbc(struct drm_device *dev);
/* IPS */
extern void intel_gpu_ips_init(struct drm_i915_private *dev_priv);
extern void intel_gpu_ips_teardown(void);

extern bool intel_display_power_enabled(struct drm_device *dev,
					enum intel_display_power_domain domain);
extern void intel_init_power_well(struct drm_device *dev);
extern void intel_set_power_well(struct drm_device *dev, bool enable);
extern void intel_enable_gt_powersave(struct drm_device *dev);
extern void intel_disable_gt_powersave(struct drm_device *dev);
extern void gen6_gt_check_fifodbg(struct drm_i915_private *dev_priv);
extern void ironlake_teardown_rc6(struct drm_device *dev);

extern bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
				   enum pipe *pipe);
extern int intel_ddi_get_cdclk_freq(struct drm_i915_private *dev_priv);
extern void intel_ddi_pll_init(struct drm_device *dev);
extern void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc);
extern void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv,
					      enum transcoder cpu_transcoder);
extern void intel_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc);
extern void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc);
extern void intel_ddi_setup_hw_pll_state(struct drm_device *dev);
extern bool intel_ddi_pll_mode_set(struct drm_crtc *crtc, int clock);
extern void intel_ddi_put_crtc_pll(struct drm_crtc *crtc);
extern void intel_ddi_set_pipe_settings(struct drm_crtc *crtc);
extern void intel_ddi_prepare_link_retrain(struct drm_encoder *encoder);
extern bool
intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector);
extern void intel_ddi_fdi_disable(struct drm_crtc *crtc);

extern void intel_display_handle_reset(struct drm_device *dev);
extern bool intel_set_cpu_fifo_underrun_reporting(struct drm_device *dev,
						  enum pipe pipe,
						  bool enable);
extern bool intel_set_pch_fifo_underrun_reporting(struct drm_device *dev,
						 enum transcoder pch_transcoder,
						 bool enable);

#endif /* __INTEL_DRV_H__ */