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dvo.h
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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>
27 #include <drm/drmP.h>
28 #include <drm/drm_crtc.h>
29 #include "intel_drv.h"
30 
32  const char *name;
33  int type;
34  /* DVOA/B/C output register */
36  /* GPIO register used for i2c bus to control this device */
39 
40  const struct intel_dvo_dev_ops *dev_ops;
41  void *dev_priv;
43 };
44 
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,
51  struct i2c_adapter *i2cbus);
52 
53  /*
54  * Called to allow the output a chance to create properties after the
55  * RandR objects have been created.
56  */
58 
59  /*
60  * Turn on/off output.
61  *
62  * Because none of our dvo drivers support an intermediate power levels,
63  * we don't expose this in the interfac.
64  */
65  void (*dpms)(struct intel_dvo_device *dvo, bool enable);
66 
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  */
77  struct drm_display_mode *mode);
78 
79  /*
80  * Callback to adjust the mode to be set in the CRTC.
81  *
82  * This allows an output to adjust the clock or even the entire set of
83  * timings, which is used for panels with fixed timings or for
84  * buses with clock limitations.
85  */
87  const struct drm_display_mode *mode,
88  struct drm_display_mode *adjusted_mode);
89 
90  /*
91  * Callback for preparing mode changes on an output
92  */
93  void (*prepare)(struct intel_dvo_device *dvo);
94 
95  /*
96  * Callback for committing mode changes on an output
97  */
98  void (*commit)(struct intel_dvo_device *dvo);
99 
100  /*
101  * Callback for setting up a video mode after fixups have been made.
102  *
103  * This is only called while the output is disabled. The dpms callback
104  * must be all that's necessary for the output, to turn the output on
105  * after this function is called.
106  */
108  struct drm_display_mode *mode,
109  struct drm_display_mode *adjusted_mode);
110 
111  /*
112  * Probe for a connected output, and return detect_status.
113  */
115 
116  /*
117  * Probe the current hw status, returning true if the connected output
118  * is active.
119  */
121 
129  struct drm_display_mode *(*get_modes)(struct intel_dvo_device *dvo);
130 
134  void (*destroy) (struct intel_dvo_device *dvo);
135 
139  void (*dump_regs)(struct intel_dvo_device *dvo);
140 };
141 
142 extern struct intel_dvo_dev_ops sil164_ops;
143 extern struct intel_dvo_dev_ops ch7xxx_ops;
144 extern struct intel_dvo_dev_ops ivch_ops;
145 extern struct intel_dvo_dev_ops tfp410_ops;
146 extern struct intel_dvo_dev_ops ch7017_ops;
147 extern struct intel_dvo_dev_ops ns2501_ops;
148 
149 #endif /* _INTEL_DVO_H */