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_DEV_H__
 24#define __INTEL_DVO_DEV_H__
 25
 26#include "i915_reg_defs.h"
 27
 28#include "intel_display_limits.h"
 29
 30enum drm_connector_status;
 31struct drm_display_mode;
 32struct i2c_adapter;
 33
 34struct intel_dvo_device {
 35	const char *name;
 36	int type;
 37	/* DVOA/B/C */
 38	enum port port;
 39	/* GPIO register used for i2c bus to control this device */
 40	u32 gpio;
 41	int slave_addr;
 42
 43	const struct intel_dvo_dev_ops *dev_ops;
 44	void *dev_priv;
 45	struct i2c_adapter *i2c_bus;
 46};
 47
 48struct intel_dvo_dev_ops {
 49	/*
 50	 * Initialize the device at startup time.
 51	 * Returns NULL if the device does not exist.
 52	 */
 53	bool (*init)(struct intel_dvo_device *dvo,
 54		     struct i2c_adapter *i2cbus);
 55
 56	/*
 57	 * Turn on/off output.
 58	 *
 59	 * Because none of our dvo drivers support an intermediate power levels,
 60	 * we don't expose this in the interfac.
 61	 */
 62	void (*dpms)(struct intel_dvo_device *dvo, bool enable);
 63
 64	/*
 65	 * Callback for testing a video mode for a given output.
 66	 *
 67	 * This function should only check for cases where a mode can't
 68	 * be supported on the output specifically, and not represent
 69	 * generic CRTC limitations.
 70	 *
 71	 * \return MODE_OK if the mode is valid, or another MODE_* otherwise.
 72	 */
 73	enum drm_mode_status (*mode_valid)(struct intel_dvo_device *dvo,
 74					   struct drm_display_mode *mode);
 75
 76	/*
 77	 * Callback for setting up a video mode after fixups have been made.
 78	 *
 79	 * This is only called while the output is disabled.  The dpms callback
 80	 * must be all that's necessary for the output, to turn the output on
 81	 * after this function is called.
 82	 */
 83	void (*mode_set)(struct intel_dvo_device *dvo,
 84			 const struct drm_display_mode *mode,
 85			 const struct drm_display_mode *adjusted_mode);
 86
 87	/*
 88	 * Probe for a connected output, and return detect_status.
 89	 */
 90	enum drm_connector_status (*detect)(struct intel_dvo_device *dvo);
 91
 92	/*
 93	 * Probe the current hw status, returning true if the connected output
 94	 * is active.
 95	 */
 96	bool (*get_hw_state)(struct intel_dvo_device *dev);
 97
 98	/**
 99	 * Clean up driver-specific bits of the output
100	 */
101	void (*destroy) (struct intel_dvo_device *dvo);
102
103	/**
104	 * Debugging hook to dump device registers to log file
105	 */
106	void (*dump_regs)(struct intel_dvo_device *dvo);
107};
108
109extern const struct intel_dvo_dev_ops sil164_ops;
110extern const struct intel_dvo_dev_ops ch7xxx_ops;
111extern const struct intel_dvo_dev_ops ivch_ops;
112extern const struct intel_dvo_dev_ops tfp410_ops;
113extern const struct intel_dvo_dev_ops ch7017_ops;
114extern const struct intel_dvo_dev_ops ns2501_ops;
115
116#endif /* __INTEL_DVO_DEV_H__ */