drivers/gpu/drm/i915/intel_drv.h - kernel/msm-4.19 - Gitiles

 /*
  * 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 <linux/i2c-id.h>
 #include <linux/i2c-algo-bit.h>
 #include "i915_drv.h"
 #include "drm_crtc.h"
 #include "drm_crtc_helper.h"
 #include "drm_fb_helper.h"

 #define _wait_for(COND, MS, W) ({ \
 	unsigned long timeout__ = jiffies + msecs_to_jiffies(MS);	\
 	int ret__ = 0;							\
 	while (! (COND)) {						\
 		if (time_after(jiffies, timeout__)) {			\
 			ret__ = -ETIMEDOUT;				\
 			break;						\
 		}							\
 		if (W && !in_dbg_master()) msleep(W);			\
 	}								\
 	ret__;								\
 })

 #define wait_for(COND, MS) _wait_for(COND, MS, 1)
 #define wait_for_atomic(COND, MS) _wait_for(COND, MS, 0)

 /*
  * 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

 /* Intel Pipe Clone Bit */
 #define INTEL_HDMIB_CLONE_BIT 1
 #define INTEL_HDMIC_CLONE_BIT 2
 #define INTEL_HDMID_CLONE_BIT 3
 #define INTEL_HDMIE_CLONE_BIT 4
 #define INTEL_HDMIF_CLONE_BIT 5
 #define INTEL_SDVO_NON_TV_CLONE_BIT 6
 #define INTEL_SDVO_TV_CLONE_BIT 7
 #define INTEL_SDVO_LVDS_CLONE_BIT 8
 #define INTEL_ANALOG_CLONE_BIT 9
 #define INTEL_TV_CLONE_BIT 10
 #define INTEL_DP_B_CLONE_BIT 11
 #define INTEL_DP_C_CLONE_BIT 12
 #define INTEL_DP_D_CLONE_BIT 13
 #define INTEL_LVDS_CLONE_BIT 14
 #define INTEL_DVO_TMDS_CLONE_BIT 15
 #define INTEL_DVO_LVDS_CLONE_BIT 16
 #define INTEL_EDP_CLONE_BIT 17

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

 /* drm_display_mode->private_flags */
 #define INTEL_MODE_PIXEL_MULTIPLIER_SHIFT (0x0)
 #define INTEL_MODE_PIXEL_MULTIPLIER_MASK (0xf << INTEL_MODE_PIXEL_MULTIPLIER_SHIFT)

 static inline void
 intel_mode_set_pixel_multiplier(struct drm_display_mode *mode,
 				int multiplier)
 {
 	mode->clock *= multiplier;
 	mode->private_flags |= multiplier;
 }

 static inline int
 intel_mode_get_pixel_multiplier(const struct drm_display_mode *mode)
 {
 	return (mode->private_flags & INTEL_MODE_PIXEL_MULTIPLIER_MASK) >> INTEL_MODE_PIXEL_MULTIPLIER_SHIFT;
 }

 struct intel_i2c_chan {
 	struct drm_device *drm_dev; /* for getting at dev. private (mmio etc.) */
 	u32 reg; /* GPIO reg */
 	struct i2c_adapter adapter;
 	struct i2c_algo_bit_data algo;
 };

 struct intel_framebuffer {
 	struct drm_framebuffer base;
 	struct drm_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;
 	int type;
 	struct i2c_adapter *i2c_bus;
 	struct i2c_adapter *ddc_bus;
 	bool load_detect_temp;
 	bool needs_tv_clock;
 	void (*hot_plug)(struct intel_encoder *);
 	int crtc_mask;
 	int clone_mask;
 };

 struct intel_connector {
 	struct drm_connector base;
 };

 struct intel_crtc {
 	struct drm_crtc base;
 	enum pipe pipe;
 	enum plane plane;
 	u8 lut_r[256], lut_g[256], lut_b[256];
 	int dpms_mode;
 	bool busy; /* is scanout buffer being updated frequently? */
 	struct timer_list idle_timer;
 	bool lowfreq_avail;
 	struct intel_overlay *overlay;
 	struct intel_unpin_work *unpin_work;
 	int fdi_lanes;

 	struct drm_gem_object *cursor_bo;
 	uint32_t cursor_addr;
 	int16_t cursor_x, cursor_y;
 	int16_t cursor_width, cursor_height;
 	bool cursor_visible, cursor_on;
 };

 #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)

 struct intel_unpin_work {
 	struct work_struct work;
 	struct drm_device *dev;
 	struct drm_gem_object *old_fb_obj;
 	struct drm_gem_object *pending_flip_obj;
 	struct drm_pending_vblank_event *event;
 	int pending;
 	bool enable_stall_check;
 };

 struct i2c_adapter *intel_i2c_create(struct drm_device *dev, const u32 reg,
 				     const char *name);
 void intel_i2c_destroy(struct i2c_adapter *adapter);
 int intel_ddc_get_modes(struct drm_connector *c, struct i2c_adapter *adapter);
 extern bool intel_ddc_probe(struct intel_encoder *intel_encoder);
 void intel_i2c_quirk_set(struct drm_device *dev, bool enable);
 void intel_i2c_reset_gmbus(struct drm_device *dev);

 extern void intel_crt_init(struct drm_device *dev);
 extern void intel_hdmi_init(struct drm_device *dev, int sdvox_reg);
 extern bool intel_sdvo_init(struct drm_device *dev, int output_device);
 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, struct drm_gem_object *obj);
 extern void intel_lvds_init(struct drm_device *dev);
 extern void intel_dp_init(struct drm_device *dev, int dp_reg);
 void
 intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode,
 		 struct drm_display_mode *adjusted_mode);
 extern bool intel_pch_has_edp(struct drm_crtc *crtc);
 extern bool intel_dpd_is_edp(struct drm_device *dev);
 extern void intel_edp_link_config (struct intel_encoder *, int *, int *);

 /* intel_panel.c */
 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 drm_device *dev,
 				    int fitting_mode,
 				    struct drm_display_mode *mode,
 				    struct drm_display_mode *adjusted_mode);
 extern u32 intel_panel_get_max_backlight(struct drm_device *dev);
 extern u32 intel_panel_get_backlight(struct drm_device *dev);
 extern void intel_panel_set_backlight(struct drm_device *dev, u32 level);

 extern int intel_panel_fitter_pipe (struct drm_device *dev);
 extern void intel_crtc_load_lut(struct drm_crtc *crtc);
 extern void intel_encoder_prepare (struct drm_encoder *encoder);
 extern void intel_encoder_commit (struct drm_encoder *encoder);
 extern void intel_encoder_destroy(struct drm_encoder *encoder);

 extern struct drm_encoder *intel_attached_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 void intel_wait_for_vblank_off(struct drm_device *dev, int pipe);
 extern void intel_wait_for_vblank(struct drm_device *dev, int pipe);
 extern struct drm_crtc *intel_get_crtc_from_pipe(struct drm_device *dev, int pipe);
 extern struct drm_crtc *intel_get_load_detect_pipe(struct intel_encoder *intel_encoder,
 						   struct drm_connector *connector,
 						   struct drm_display_mode *mode,
 						   int *dpms_mode);
 extern void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder,
 					   struct drm_connector *connector,
 					   int dpms_mode);

 extern struct drm_connector* intel_sdvo_find(struct drm_device *dev, int sdvoB);
 extern int intel_sdvo_supports_hotplug(struct drm_connector *connector);
 extern void intel_sdvo_set_hotplug(struct drm_connector *connector, int enable);
 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_init_clock_gating(struct drm_device *dev);
 extern void ironlake_enable_drps(struct drm_device *dev);
 extern void ironlake_disable_drps(struct drm_device *dev);

 extern int intel_pin_and_fence_fb_obj(struct drm_device *dev,
 				      struct drm_gem_object *obj);

 extern int intel_framebuffer_init(struct drm_device *dev,
 				  struct intel_framebuffer *ifb,
 				  struct drm_mode_fb_cmd *mode_cmd,
 				  struct drm_gem_object *obj);
 extern int intel_fbdev_init(struct drm_device *dev);
 extern void intel_fbdev_fini(struct drm_device *dev);

 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,
 				    bool interruptible);
 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);
 #endif /* __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 <linux/i2c-id.h>
	#include <linux/i2c-algo-bit.h>
	#include "i915_drv.h"
	#include "drm_crtc.h"
	#include "drm_crtc_helper.h"
	#include "drm_fb_helper.h"

	#define _wait_for(COND, MS, W) ({ \
	unsigned long timeout__ = jiffies + msecs_to_jiffies(MS); \
	int ret__ = 0; \
	while (! (COND)) { \
	if (time_after(jiffies, timeout__)) { \
	ret__ = -ETIMEDOUT; \
	break; \
	} \
	if (W && !in_dbg_master()) msleep(W); \
	} \
	ret__; \
	})

	#define wait_for(COND, MS) _wait_for(COND, MS, 1)
	#define wait_for_atomic(COND, MS) _wait_for(COND, MS, 0)

	/*
	* 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

	/* Intel Pipe Clone Bit */
	#define INTEL_HDMIB_CLONE_BIT 1
	#define INTEL_HDMIC_CLONE_BIT 2
	#define INTEL_HDMID_CLONE_BIT 3
	#define INTEL_HDMIE_CLONE_BIT 4
	#define INTEL_HDMIF_CLONE_BIT 5
	#define INTEL_SDVO_NON_TV_CLONE_BIT 6
	#define INTEL_SDVO_TV_CLONE_BIT 7
	#define INTEL_SDVO_LVDS_CLONE_BIT 8
	#define INTEL_ANALOG_CLONE_BIT 9
	#define INTEL_TV_CLONE_BIT 10
	#define INTEL_DP_B_CLONE_BIT 11
	#define INTEL_DP_C_CLONE_BIT 12
	#define INTEL_DP_D_CLONE_BIT 13
	#define INTEL_LVDS_CLONE_BIT 14
	#define INTEL_DVO_TMDS_CLONE_BIT 15
	#define INTEL_DVO_LVDS_CLONE_BIT 16
	#define INTEL_EDP_CLONE_BIT 17

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

	/* drm_display_mode->private_flags */
	#define INTEL_MODE_PIXEL_MULTIPLIER_SHIFT (0x0)
	#define INTEL_MODE_PIXEL_MULTIPLIER_MASK (0xf << INTEL_MODE_PIXEL_MULTIPLIER_SHIFT)

	static inline void
	intel_mode_set_pixel_multiplier(struct drm_display_mode *mode,
	int multiplier)
	{
	mode->clock *= multiplier;
	mode->private_flags \|= multiplier;
	}

	static inline int
	intel_mode_get_pixel_multiplier(const struct drm_display_mode *mode)
	{
	return (mode->private_flags & INTEL_MODE_PIXEL_MULTIPLIER_MASK) >> INTEL_MODE_PIXEL_MULTIPLIER_SHIFT;
	}

	struct intel_i2c_chan {
	struct drm_device drm_dev; / for getting at dev. private (mmio etc.) */
	u32 reg; /* GPIO reg */
	struct i2c_adapter adapter;
	struct i2c_algo_bit_data algo;
	};

	struct intel_framebuffer {
	struct drm_framebuffer base;
	struct drm_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;
	int type;
	struct i2c_adapter *i2c_bus;
	struct i2c_adapter *ddc_bus;
	bool load_detect_temp;
	bool needs_tv_clock;
	void (hot_plug)(struct intel_encoder );
	int crtc_mask;
	int clone_mask;
	};

	struct intel_connector {
	struct drm_connector base;
	};

	struct intel_crtc {
	struct drm_crtc base;
	enum pipe pipe;
	enum plane plane;
	u8 lut_r[256], lut_g[256], lut_b[256];
	int dpms_mode;
	bool busy; /* is scanout buffer being updated frequently? */
	struct timer_list idle_timer;
	bool lowfreq_avail;
	struct intel_overlay *overlay;
	struct intel_unpin_work *unpin_work;
	int fdi_lanes;

	struct drm_gem_object *cursor_bo;
	uint32_t cursor_addr;
	int16_t cursor_x, cursor_y;
	int16_t cursor_width, cursor_height;
	bool cursor_visible, cursor_on;
	};

	#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)

	struct intel_unpin_work {
	struct work_struct work;
	struct drm_device *dev;
	struct drm_gem_object *old_fb_obj;
	struct drm_gem_object *pending_flip_obj;
	struct drm_pending_vblank_event *event;
	int pending;
	bool enable_stall_check;
	};

	struct i2c_adapter intel_i2c_create(struct drm_device dev, const u32 reg,
	const char *name);
	void intel_i2c_destroy(struct i2c_adapter *adapter);
	int intel_ddc_get_modes(struct drm_connector c, struct i2c_adapter adapter);
	extern bool intel_ddc_probe(struct intel_encoder *intel_encoder);
	void intel_i2c_quirk_set(struct drm_device *dev, bool enable);
	void intel_i2c_reset_gmbus(struct drm_device *dev);

	extern void intel_crt_init(struct drm_device *dev);
	extern void intel_hdmi_init(struct drm_device *dev, int sdvox_reg);
	extern bool intel_sdvo_init(struct drm_device *dev, int output_device);
	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, struct drm_gem_object obj);
	extern void intel_lvds_init(struct drm_device *dev);
	extern void intel_dp_init(struct drm_device *dev, int dp_reg);
	void
	intel_dp_set_m_n(struct drm_crtc crtc, struct drm_display_mode mode,
	struct drm_display_mode *adjusted_mode);
	extern bool intel_pch_has_edp(struct drm_crtc *crtc);
	extern bool intel_dpd_is_edp(struct drm_device *dev);
	extern void intel_edp_link_config (struct intel_encoder , int , int *);

	/* intel_panel.c */
	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 drm_device *dev,
	int fitting_mode,
	struct drm_display_mode *mode,
	struct drm_display_mode *adjusted_mode);
	extern u32 intel_panel_get_max_backlight(struct drm_device *dev);
	extern u32 intel_panel_get_backlight(struct drm_device *dev);
	extern void intel_panel_set_backlight(struct drm_device *dev, u32 level);

	extern int intel_panel_fitter_pipe (struct drm_device *dev);
	extern void intel_crtc_load_lut(struct drm_crtc *crtc);
	extern void intel_encoder_prepare (struct drm_encoder *encoder);
	extern void intel_encoder_commit (struct drm_encoder *encoder);
	extern void intel_encoder_destroy(struct drm_encoder *encoder);

	extern struct drm_encoder intel_attached_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 void intel_wait_for_vblank_off(struct drm_device *dev, int pipe);
	extern void intel_wait_for_vblank(struct drm_device *dev, int pipe);
	extern struct drm_crtc intel_get_crtc_from_pipe(struct drm_device dev, int pipe);
	extern struct drm_crtc intel_get_load_detect_pipe(struct intel_encoder intel_encoder,
	struct drm_connector *connector,
	struct drm_display_mode *mode,
	int *dpms_mode);
	extern void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder,
	struct drm_connector *connector,
	int dpms_mode);

	extern struct drm_connector* intel_sdvo_find(struct drm_device *dev, int sdvoB);
	extern int intel_sdvo_supports_hotplug(struct drm_connector *connector);
	extern void intel_sdvo_set_hotplug(struct drm_connector *connector, int enable);
	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_init_clock_gating(struct drm_device *dev);
	extern void ironlake_enable_drps(struct drm_device *dev);
	extern void ironlake_disable_drps(struct drm_device *dev);

	extern int intel_pin_and_fence_fb_obj(struct drm_device *dev,
	struct drm_gem_object *obj);

	extern int intel_framebuffer_init(struct drm_device *dev,
	struct intel_framebuffer *ifb,
	struct drm_mode_fb_cmd *mode_cmd,
	struct drm_gem_object *obj);
	extern int intel_fbdev_init(struct drm_device *dev);
	extern void intel_fbdev_fini(struct drm_device *dev);

	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,
	bool interruptible);
	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);
	#endif /* __INTEL_DRV_H__ */