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 i915_reg_t dvo_reg; 36 i915_reg_t dvo_srcdim_reg; 37 /* GPIO register used for i2c bus to control this device */ 38 u32 gpio; 39 int slave_addr; 40 41 const struct intel_dvo_dev_ops *dev_ops; 42 void *dev_priv; 43 struct i2c_adapter *i2c_bus; 44 }; 45 46 struct intel_dvo_dev_ops { 47 /* 48 * Initialize the device at startup time. 49 * Returns NULL if the device does not exist. 50 */ 51 bool (*init)(struct intel_dvo_device *dvo, 52 struct i2c_adapter *i2cbus); 53 54 /* 55 * Called to allow the output a chance to create properties after the 56 * RandR objects have been created. 57 */ 58 void (*create_resources)(struct intel_dvo_device *dvo); 59 60 /* 61 * Turn on/off output. 62 * 63 * Because none of our dvo drivers support an intermediate power levels, 64 * we don't expose this in the interfac. 65 */ 66 void (*dpms)(struct intel_dvo_device *dvo, bool enable); 67 68 /* 69 * Callback for testing a video mode for a given output. 70 * 71 * This function should only check for cases where a mode can't 72 * be supported on the output specifically, and not represent 73 * generic CRTC limitations. 74 * 75 * \return MODE_OK if the mode is valid, or another MODE_* otherwise. 76 */ 77 int (*mode_valid)(struct intel_dvo_device *dvo, 78 struct drm_display_mode *mode); 79 80 /* 81 * Callback for preparing mode changes on an output 82 */ 83 void (*prepare)(struct intel_dvo_device *dvo); 84 85 /* 86 * Callback for committing mode changes on an output 87 */ 88 void (*commit)(struct intel_dvo_device *dvo); 89 90 /* 91 * Callback for setting up a video mode after fixups have been made. 92 * 93 * This is only called while the output is disabled. The dpms callback 94 * must be all that's necessary for the output, to turn the output on 95 * after this function is called. 96 */ 97 void (*mode_set)(struct intel_dvo_device *dvo, 98 const struct drm_display_mode *mode, 99 const struct drm_display_mode *adjusted_mode); 100 101 /* 102 * Probe for a connected output, and return detect_status. 103 */ 104 enum drm_connector_status (*detect)(struct intel_dvo_device *dvo); 105 106 /* 107 * Probe the current hw status, returning true if the connected output 108 * is active. 109 */ 110 bool (*get_hw_state)(struct intel_dvo_device *dev); 111 112 /** 113 * Query the device for the modes it provides. 114 * 115 * This function may also update MonInfo, mm_width, and mm_height. 116 * 117 * \return singly-linked list of modes or NULL if no modes found. 118 */ 119 struct drm_display_mode *(*get_modes)(struct intel_dvo_device *dvo); 120 121 /** 122 * Clean up driver-specific bits of the output 123 */ 124 void (*destroy) (struct intel_dvo_device *dvo); 125 126 /** 127 * Debugging hook to dump device registers to log file 128 */ 129 void (*dump_regs)(struct intel_dvo_device *dvo); 130 }; 131 132 extern const struct intel_dvo_dev_ops sil164_ops; 133 extern const struct intel_dvo_dev_ops ch7xxx_ops; 134 extern const struct intel_dvo_dev_ops ivch_ops; 135 extern const struct intel_dvo_dev_ops tfp410_ops; 136 extern const struct intel_dvo_dev_ops ch7017_ops; 137 extern const struct intel_dvo_dev_ops ns2501_ops; 138 139 #endif /* _INTEL_DVO_H */ 140