2 * Copyright © 2006 Eric Anholt
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.
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
26 #include <linux/i2c.h>
30 #include "intel_drv.h"
32 struct intel_dvo_device {
35 /* DVOA/B/C output register */
37 /* GPIO register used for i2c bus to control this device */
40 struct i2c_adapter *i2c_bus;
42 const struct intel_dvo_dev_ops *dev_ops;
45 struct drm_display_mode *panel_fixed_mode;
46 bool panel_wants_dither;
49 struct intel_dvo_dev_ops {
51 * Initialize the device at startup time.
52 * Returns NULL if the device does not exist.
54 bool (*init)(struct intel_dvo_device *dvo,
55 struct i2c_adapter *i2cbus);
58 * Called to allow the output a chance to create properties after the
59 * RandR objects have been created.
61 void (*create_resources)(struct intel_dvo_device *dvo);
64 * Turn on/off output or set intermediate power levels if available.
66 * Unsupported intermediate modes drop to the lower power setting.
67 * If the mode is DPMSModeOff, the output must be disabled,
68 * as the DPLL may be disabled afterwards.
70 void (*dpms)(struct intel_dvo_device *dvo, int mode);
73 * Callback for testing a video mode for a given output.
75 * This function should only check for cases where a mode can't
76 * be supported on the output specifically, and not represent
77 * generic CRTC limitations.
79 * \return MODE_OK if the mode is valid, or another MODE_* otherwise.
81 int (*mode_valid)(struct intel_dvo_device *dvo,
82 struct drm_display_mode *mode);
85 * Callback to adjust the mode to be set in the CRTC.
87 * This allows an output to adjust the clock or even the entire set of
88 * timings, which is used for panels with fixed timings or for
89 * buses with clock limitations.
91 bool (*mode_fixup)(struct intel_dvo_device *dvo,
92 struct drm_display_mode *mode,
93 struct drm_display_mode *adjusted_mode);
96 * Callback for preparing mode changes on an output
98 void (*prepare)(struct intel_dvo_device *dvo);
101 * Callback for committing mode changes on an output
103 void (*commit)(struct intel_dvo_device *dvo);
106 * Callback for setting up a video mode after fixups have been made.
108 * This is only called while the output is disabled. The dpms callback
109 * must be all that's necessary for the output, to turn the output on
110 * after this function is called.
112 void (*mode_set)(struct intel_dvo_device *dvo,
113 struct drm_display_mode *mode,
114 struct drm_display_mode *adjusted_mode);
117 * Probe for a connected output, and return detect_status.
119 enum drm_connector_status (*detect)(struct intel_dvo_device *dvo);
122 * Query the device for the modes it provides.
124 * This function may also update MonInfo, mm_width, and mm_height.
126 * \return singly-linked list of modes or NULL if no modes found.
128 struct drm_display_mode *(*get_modes)(struct intel_dvo_device *dvo);
131 * Clean up driver-specific bits of the output
133 void (*destroy) (struct intel_dvo_device *dvo);
136 * Debugging hook to dump device registers to log file
138 void (*dump_regs)(struct intel_dvo_device *dvo);
141 extern struct intel_dvo_dev_ops sil164_ops;
142 extern struct intel_dvo_dev_ops ch7xxx_ops;
143 extern struct intel_dvo_dev_ops ivch_ops;
144 extern struct intel_dvo_dev_ops tfp410_ops;
145 extern struct intel_dvo_dev_ops ch7017_ops;
147 #endif /* _INTEL_DVO_H */