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 <linux/i2c.h> 27 28 #include <drm/drm_crtc.h> 29 30 #include "i915_reg.h" 31 32 struct intel_dvo_device { 33 const char *name; 34 int type; 35 /* DVOA/B/C output register */ 36 i915_reg_t dvo_reg; 37 i915_reg_t dvo_srcdim_reg; 38 /* GPIO register used for i2c bus to control this device */ 39 u32 gpio; 40 int slave_addr; 41 42 const struct intel_dvo_dev_ops *dev_ops; 43 void *dev_priv; 44 struct i2c_adapter *i2c_bus; 45 }; 46 47 struct intel_dvo_dev_ops { 48 /* 49 * Initialize the device at startup time. 50 * Returns NULL if the device does not exist. 51 */ 52 bool (*init)(struct intel_dvo_device *dvo, 53 struct i2c_adapter *i2cbus); 54 55 /* 56 * Called to allow the output a chance to create properties after the 57 * RandR objects have been created. 58 */ 59 void (*create_resources)(struct intel_dvo_device *dvo); 60 61 /* 62 * Turn on/off output. 63 * 64 * Because none of our dvo drivers support an intermediate power levels, 65 * we don't expose this in the interfac. 66 */ 67 void (*dpms)(struct intel_dvo_device *dvo, bool enable); 68 69 /* 70 * Callback for testing a video mode for a given output. 71 * 72 * This function should only check for cases where a mode can't 73 * be supported on the output specifically, and not represent 74 * generic CRTC limitations. 75 * 76 * \return MODE_OK if the mode is valid, or another MODE_* otherwise. 77 */ 78 int (*mode_valid)(struct intel_dvo_device *dvo, 79 struct drm_display_mode *mode); 80 81 /* 82 * Callback for preparing mode changes on an output 83 */ 84 void (*prepare)(struct intel_dvo_device *dvo); 85 86 /* 87 * Callback for committing mode changes on an output 88 */ 89 void (*commit)(struct intel_dvo_device *dvo); 90 91 /* 92 * Callback for setting up a video mode after fixups have been made. 93 * 94 * This is only called while the output is disabled. The dpms callback 95 * must be all that's necessary for the output, to turn the output on 96 * after this function is called. 97 */ 98 void (*mode_set)(struct intel_dvo_device *dvo, 99 const struct drm_display_mode *mode, 100 const struct drm_display_mode *adjusted_mode); 101 102 /* 103 * Probe for a connected output, and return detect_status. 104 */ 105 enum drm_connector_status (*detect)(struct intel_dvo_device *dvo); 106 107 /* 108 * Probe the current hw status, returning true if the connected output 109 * is active. 110 */ 111 bool (*get_hw_state)(struct intel_dvo_device *dev); 112 113 /** 114 * Query the device for the modes it provides. 115 * 116 * This function may also update MonInfo, mm_width, and mm_height. 117 * 118 * \return singly-linked list of modes or NULL if no modes found. 119 */ 120 struct drm_display_mode *(*get_modes)(struct intel_dvo_device *dvo); 121 122 /** 123 * Clean up driver-specific bits of the output 124 */ 125 void (*destroy) (struct intel_dvo_device *dvo); 126 127 /** 128 * Debugging hook to dump device registers to log file 129 */ 130 void (*dump_regs)(struct intel_dvo_device *dvo); 131 }; 132 133 extern const struct intel_dvo_dev_ops sil164_ops; 134 extern const struct intel_dvo_dev_ops ch7xxx_ops; 135 extern const struct intel_dvo_dev_ops ivch_ops; 136 extern const struct intel_dvo_dev_ops tfp410_ops; 137 extern const struct intel_dvo_dev_ops ch7017_ops; 138 extern const struct intel_dvo_dev_ops ns2501_ops; 139 140 #endif /* __INTEL_DVO_DEV_H__ */ 141