[mirror_ubuntu-artful-kernel.git] / drivers / gpu / drm / i915 / dvo.h

/*
 * Copyright © 2006 Eric Anholt
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that copyright
 * notice and this permission notice appear in supporting documentation, and
 * that the name of the copyright holders not be used in advertising or
 * publicity pertaining to distribution of the software without specific,
 * written prior permission.  The copyright holders make no representations
 * about the suitability of this software for any purpose.  It is provided "as
 * is" without express or implied warranty.
 *
 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
 * OF THIS SOFTWARE.
 */

#ifndef _INTEL_DVO_H
#define _INTEL_DVO_H

#include <linux/i2c.h>
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include "intel_drv.h"

struct intel_dvo_device {
	const char *name;
	int type;
	/* DVOA/B/C output register */
	u32 dvo_reg;
	/* GPIO register used for i2c bus to control this device */
	u32 gpio;
	int slave_addr;

	const struct intel_dvo_dev_ops *dev_ops;
	void *dev_priv;
	struct i2c_adapter *i2c_bus;
};

struct intel_dvo_dev_ops {
	/*
	 * Initialize the device at startup time.
	 * Returns NULL if the device does not exist.
	 */
	bool (*init)(struct intel_dvo_device *dvo,
		     struct i2c_adapter *i2cbus);

	/*
	 * Called to allow the output a chance to create properties after the
	 * RandR objects have been created.
	 */
	void (*create_resources)(struct intel_dvo_device *dvo);

	/*
	 * Turn on/off output.
	 *
	 * Because none of our dvo drivers support an intermediate power levels,
	 * we don't expose this in the interfac.
	 */
	void (*dpms)(struct intel_dvo_device *dvo, bool enable);

	/*
	 * Callback for testing a video mode for a given output.
	 *
	 * This function should only check for cases where a mode can't
	 * be supported on the output specifically, and not represent
	 * generic CRTC limitations.
	 *
	 * \return MODE_OK if the mode is valid, or another MODE_* otherwise.
	 */
	int (*mode_valid)(struct intel_dvo_device *dvo,
			  struct drm_display_mode *mode);

	/*
	 * Callback for preparing mode changes on an output
	 */
	void (*prepare)(struct intel_dvo_device *dvo);

	/*
	 * Callback for committing mode changes on an output
	 */
	void (*commit)(struct intel_dvo_device *dvo);

	/*
	 * Callback for setting up a video mode after fixups have been made.
	 *
	 * This is only called while the output is disabled.  The dpms callback
	 * must be all that's necessary for the output, to turn the output on
	 * after this function is called.
	 */
	void (*mode_set)(struct intel_dvo_device *dvo,
			 struct drm_display_mode *mode,
			 struct drm_display_mode *adjusted_mode);

	/*
	 * Probe for a connected output, and return detect_status.
	 */
	enum drm_connector_status (*detect)(struct intel_dvo_device *dvo);

	/*
	 * Probe the current hw status, returning true if the connected output
	 * is active.
	 */
	bool (*get_hw_state)(struct intel_dvo_device *dev);

	/**
	 * Query the device for the modes it provides.
	 *
	 * This function may also update MonInfo, mm_width, and mm_height.
	 *
	 * \return singly-linked list of modes or NULL if no modes found.
	 */
	struct drm_display_mode *(*get_modes)(struct intel_dvo_device *dvo);

	/**
	 * Clean up driver-specific bits of the output
	 */
	void (*destroy) (struct intel_dvo_device *dvo);

	/**
	 * Debugging hook to dump device registers to log file
	 */
	void (*dump_regs)(struct intel_dvo_device *dvo);
};

extern struct intel_dvo_dev_ops sil164_ops;
extern struct intel_dvo_dev_ops ch7xxx_ops;
extern struct intel_dvo_dev_ops ivch_ops;
extern struct intel_dvo_dev_ops tfp410_ops;
extern struct intel_dvo_dev_ops ch7017_ops;
extern struct intel_dvo_dev_ops ns2501_ops;

#endif /* _INTEL_DVO_H */
Commit	Line	Data
79e53945 JB	1	/*
	2	* Copyright © 2006 Eric Anholt
	3	*
	4	* Permission to use, copy, modify, distribute, and sell this software and its
	5	* documentation for any purpose is hereby granted without fee, provided that
	6	* the above copyright notice appear in all copies and that both that copyright
	7	* notice and this permission notice appear in supporting documentation, and
	8	* that the name of the copyright holders not be used in advertising or
	9	* publicity pertaining to distribution of the software without specific,
	10	* written prior permission. The copyright holders make no representations
	11	* about the suitability of this software for any purpose. It is provided "as
	12	* is" without express or implied warranty.
	13	*
	14	* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
	15	* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
	16	* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
	17	* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
	18	* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
	19	* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
	20	* OF THIS SOFTWARE.
	21	*/
	22
	23	#ifndef _INTEL_DVO_H
	24	#define _INTEL_DVO_H
	25
	26	#include <linux/i2c.h>
760285e7 DH	27	#include <drm/drmP.h>
760285e7 DH	28	#include <drm/drm_crtc.h>
79e53945 JB	29	#include "intel_drv.h"
	30
	31	struct intel_dvo_device {
ea5b213a	32	const char *name;
79e53945 JB	33	int type;
	34	/* DVOA/B/C output register */
	35	u32 dvo_reg;
	36	/* GPIO register used for i2c bus to control this device */
	37	u32 gpio;
	38	int slave_addr;
79e53945 JB	39
	40	const struct intel_dvo_dev_ops *dev_ops;
	41	void *dev_priv;
ea5b213a	42	struct i2c_adapter *i2c_bus;
79e53945 JB	43	};
	44
	45	struct intel_dvo_dev_ops {
	46	/*
	47	* Initialize the device at startup time.
	48	* Returns NULL if the device does not exist.
	49	*/
	50	bool (init)(struct intel_dvo_device dvo,
f9c10a9b	51	struct i2c_adapter *i2cbus);
79e53945 JB	52
	53	/*
	54	* Called to allow the output a chance to create properties after the
	55	* RandR objects have been created.
	56	*/
	57	void (create_resources)(struct intel_dvo_device dvo);
	58
	59	/*
fac3274c	60	* Turn on/off output.
79e53945	61	*
fac3274c DV	62	* Because none of our dvo drivers support an intermediate power levels,
fac3274c DV	63	* we don't expose this in the interfac.
79e53945	64	*/
fac3274c	65	void (dpms)(struct intel_dvo_device dvo, bool enable);
79e53945	66
79e53945 JB	67	/*
	68	* Callback for testing a video mode for a given output.
	69	*
	70	* This function should only check for cases where a mode can't
	71	* be supported on the output specifically, and not represent
	72	* generic CRTC limitations.
	73	*
	74	* \return MODE_OK if the mode is valid, or another MODE_* otherwise.
	75	*/
	76	int (mode_valid)(struct intel_dvo_device dvo,
	77	struct drm_display_mode *mode);
	78
79e53945 JB	79	/*
	80	* Callback for preparing mode changes on an output
	81	*/
	82	void (prepare)(struct intel_dvo_device dvo);
	83
	84	/*
	85	* Callback for committing mode changes on an output
	86	*/
	87	void (commit)(struct intel_dvo_device dvo);
	88
	89	/*
	90	* Callback for setting up a video mode after fixups have been made.
	91	*
	92	* This is only called while the output is disabled. The dpms callback
	93	* must be all that's necessary for the output, to turn the output on
	94	* after this function is called.
	95	*/
	96	void (mode_set)(struct intel_dvo_device dvo,
	97	struct drm_display_mode *mode,
	98	struct drm_display_mode *adjusted_mode);
	99
	100	/*
	101	* Probe for a connected output, and return detect_status.
	102	*/
	103	enum drm_connector_status (detect)(struct intel_dvo_device dvo);
	104
732ce74f DV	105	/*
	106	* Probe the current hw status, returning true if the connected output
	107	* is active.
	108	*/
	109	bool (get_hw_state)(struct intel_dvo_device dev);
	110
79e53945 JB	111	/**
	112	* Query the device for the modes it provides.
	113	*
	114	* This function may also update MonInfo, mm_width, and mm_height.
	115	*
	116	* \return singly-linked list of modes or NULL if no modes found.
	117	*/
	118	struct drm_display_mode (get_modes)(struct intel_dvo_device *dvo);
	119
	120	/**
	121	* Clean up driver-specific bits of the output
	122	*/
	123	void (destroy) (struct intel_dvo_device dvo);
	124
	125	/**
	126	* Debugging hook to dump device registers to log file
	127	*/
	128	void (dump_regs)(struct intel_dvo_device dvo);
	129	};
	130
606df4e0 HE	131	extern struct intel_dvo_dev_ops sil164_ops;
	132	extern struct intel_dvo_dev_ops ch7xxx_ops;
	133	extern struct intel_dvo_dev_ops ivch_ops;
	134	extern struct intel_dvo_dev_ops tfp410_ops;
	135	extern struct intel_dvo_dev_ops ch7017_ops;
7434a255	136	extern struct intel_dvo_dev_ops ns2501_ops;
606df4e0	137
79e53945	138	#endif /* _INTEL_DVO_H */