drivers/gpu/drm/i915/intel_drv.h - SHIFTPHONES/mainline/linux - 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 "i915_drm.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 && drm_can_sleep()) msleep(W);	\
 	}								\
 	ret__;								\
 })

 #define wait_for_atomic_us(COND, US) ({ \
 	int i, ret__ = -ETIMEDOUT;	\
 	for (i = 0; i < (US); i++) {	\
 		if ((COND)) {		\
 			ret__ = 0;	\
 			break;		\
 		}			\
 		udelay(1);		\
 	}				\
 	ret__;				\
 })

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

 /* 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)
 #define INTEL_MODE_DP_FORCE_6BPC (0x10)
 /* This flag must be set by the encoder's mode_fixup if it changes the crtc
  * timings in the mode to prevent the crtc fixup from overwriting them.
  * Currently only lvds needs that. */
 #define INTEL_MODE_CRTC_TIMINGS_SET (0x20)

 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_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;
 	int type;
 	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_encoder *encoder;
 };

 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 active; /* is the crtc on? independent of the 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_i915_gem_object *cursor_bo;
 	uint32_t cursor_addr;
 	int16_t cursor_x, cursor_y;
 	int16_t cursor_width, cursor_height;
 	bool cursor_visible;
 	unsigned int bpp;

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

 struct intel_plane {
 	struct drm_plane base;
 	enum pipe pipe;
 	struct drm_i915_gem_object *obj;
 	bool primary_disabled;
 	int max_downscale;
 	u32 lut_r[1024], lut_g[1024], lut_b[1024];
 	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_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 {
 	struct intel_encoder base;
 	u32 sdvox_reg;
 	int ddc_bus;
 	int ddi_port;
 	uint32_t color_range;
 	bool has_hdmi_sink;
 	bool has_audio;
 	enum hdmi_force_audio force_audio;
 	void (*write_infoframe)(struct drm_encoder *encoder,
 				struct dip_infoframe *frame);
 	void (*set_infoframes)(struct drm_encoder *encoder,
 			       struct drm_display_mode *adjusted_mode);
 };

 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_device *dev;
 	struct drm_i915_gem_object *old_fb_obj;
 	struct drm_i915_gem_object *pending_flip_obj;
 	struct drm_pending_vblank_event *event;
 	int pending;
 	bool enable_stall_check;
 };

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

 int intel_ddc_get_modes(struct drm_connector *c, struct i2c_adapter *adapter);
 extern bool intel_ddc_probe(struct intel_encoder *intel_encoder, int ddc_bus);

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

 extern void intel_crt_init(struct drm_device *dev);
 extern void intel_hdmi_init(struct drm_device *dev, int sdvox_reg);
 extern struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder);
 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,
 			    struct drm_i915_gem_object *obj);
 extern bool 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_dpd_is_edp(struct drm_device *dev);
 extern void intel_edp_link_config(struct intel_encoder *, int *, int *);
 extern int intel_edp_target_clock(struct intel_encoder *,
 				  struct drm_display_mode *mode);
 extern bool intel_encoder_is_pch_edp(struct drm_encoder *encoder);
 extern int intel_plane_init(struct drm_device *dev, enum pipe pipe);
 extern void intel_flush_display_plane(struct drm_i915_private *dev_priv,
 				      enum plane plane);

 void intel_sanitize_pm(struct drm_device *dev);

 /* 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,
 				    const 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_setup_backlight(struct drm_device *dev);
 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);

 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);

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

 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 void intel_wait_for_vblank(struct drm_device *dev, int pipe);
 extern void intel_wait_for_pipe_off(struct drm_device *dev, int pipe);

 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 intel_encoder *intel_encoder,
 				       struct drm_connector *connector,
 				       struct drm_display_mode *mode,
 				       struct intel_load_detect_pipe *old);
 extern void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder,
 					   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 void ironlake_disable_rc6(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_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_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_write_eld(struct drm_encoder *encoder,
 			    struct drm_display_mode *mode);
 extern void intel_cpt_verify_modeset(struct drm_device *dev, int pipe);
 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 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);

 /* 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 void gen6_enable_rps(struct drm_i915_private *dev_priv);
 extern void gen6_update_ring_freq(struct drm_i915_private *dev_priv);
 extern void gen6_disable_rps(struct drm_device *dev);
 extern void intel_init_emon(struct drm_device *dev);

 extern void intel_ddi_dpms(struct drm_encoder *encoder, int mode);
 extern void intel_ddi_mode_set(struct drm_encoder *encoder,
 				struct drm_display_mode *mode,
 				struct drm_display_mode *adjusted_mode);

 #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 "i915_drm.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 && drm_can_sleep()) msleep(W); \
	} \
	ret__; \
	})

	#define wait_for_atomic_us(COND, US) ({ \
	int i, ret__ = -ETIMEDOUT; \
	for (i = 0; i < (US); i++) { \
	if ((COND)) { \
	ret__ = 0; \
	break; \
	} \
	udelay(1); \
	} \
	ret__; \
	})

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

	/* 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)
	#define INTEL_MODE_DP_FORCE_6BPC (0x10)
	/* This flag must be set by the encoder's mode_fixup if it changes the crtc
	* timings in the mode to prevent the crtc fixup from overwriting them.
	* Currently only lvds needs that. */
	#define INTEL_MODE_CRTC_TIMINGS_SET (0x20)

	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_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;
	int type;
	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_encoder *encoder;
	};

	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 active; /* is the crtc on? independent of the 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_i915_gem_object *cursor_bo;
	uint32_t cursor_addr;
	int16_t cursor_x, cursor_y;
	int16_t cursor_width, cursor_height;
	bool cursor_visible;
	unsigned int bpp;

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

	struct intel_plane {
	struct drm_plane base;
	enum pipe pipe;
	struct drm_i915_gem_object *obj;
	bool primary_disabled;
	int max_downscale;
	u32 lut_r[1024], lut_g[1024], lut_b[1024];
	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_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 {
	struct intel_encoder base;
	u32 sdvox_reg;
	int ddc_bus;
	int ddi_port;
	uint32_t color_range;
	bool has_hdmi_sink;
	bool has_audio;
	enum hdmi_force_audio force_audio;
	void (write_infoframe)(struct drm_encoder encoder,
	struct dip_infoframe *frame);
	void (set_infoframes)(struct drm_encoder encoder,
	struct drm_display_mode *adjusted_mode);
	};

	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_device *dev;
	struct drm_i915_gem_object *old_fb_obj;
	struct drm_i915_gem_object *pending_flip_obj;
	struct drm_pending_vblank_event *event;
	int pending;
	bool enable_stall_check;
	};

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

	int intel_ddc_get_modes(struct drm_connector c, struct i2c_adapter adapter);
	extern bool intel_ddc_probe(struct intel_encoder *intel_encoder, int ddc_bus);

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

	extern void intel_crt_init(struct drm_device *dev);
	extern void intel_hdmi_init(struct drm_device *dev, int sdvox_reg);
	extern struct intel_hdmi enc_to_intel_hdmi(struct drm_encoder encoder);
	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,
	struct drm_i915_gem_object *obj);
	extern bool 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_dpd_is_edp(struct drm_device *dev);
	extern void intel_edp_link_config(struct intel_encoder , int , int *);
	extern int intel_edp_target_clock(struct intel_encoder *,
	struct drm_display_mode *mode);
	extern bool intel_encoder_is_pch_edp(struct drm_encoder *encoder);
	extern int intel_plane_init(struct drm_device *dev, enum pipe pipe);
	extern void intel_flush_display_plane(struct drm_i915_private *dev_priv,
	enum plane plane);

	void intel_sanitize_pm(struct drm_device *dev);

	/* 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,
	const 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_setup_backlight(struct drm_device *dev);
	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);

	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);

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

	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 void intel_wait_for_vblank(struct drm_device *dev, int pipe);
	extern void intel_wait_for_pipe_off(struct drm_device *dev, int pipe);

	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 intel_encoder *intel_encoder,
	struct drm_connector *connector,
	struct drm_display_mode *mode,
	struct intel_load_detect_pipe *old);
	extern void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder,
	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 void ironlake_disable_rc6(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_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_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_write_eld(struct drm_encoder *encoder,
	struct drm_display_mode *mode);
	extern void intel_cpt_verify_modeset(struct drm_device *dev, int pipe);
	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 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);

	/* 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 void gen6_enable_rps(struct drm_i915_private *dev_priv);
	extern void gen6_update_ring_freq(struct drm_i915_private *dev_priv);
	extern void gen6_disable_rps(struct drm_device *dev);
	extern void intel_init_emon(struct drm_device *dev);

	extern void intel_ddi_dpms(struct drm_encoder *encoder, int mode);
	extern void intel_ddi_mode_set(struct drm_encoder *encoder,
	struct drm_display_mode *mode,
	struct drm_display_mode *adjusted_mode);

	#endif /* __INTEL_DRV_H__ */