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 31 struct intel_dvo_device { 32 const char *name; 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; 39 40 const struct intel_dvo_dev_ops *dev_ops; 41 void *dev_priv; 42 struct i2c_adapter *i2c_bus; 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, 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 */ 57 void (*create_resources)(struct intel_dvo_device *dvo); 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 */ 76 int (*mode_valid)(struct intel_dvo_device *dvo, 77 struct drm_display_mode *mode); 78 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 const struct drm_display_mode *mode, 98 const 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); 104 105 /* 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); 110 111 /** 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 }; 130 131 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; 136 extern struct intel_dvo_dev_ops ns2501_ops; 137 138 #endif /* _INTEL_DVO_H */ 139