Clarence Ip | 7aa390f | 2016-05-26 21:06:54 -0400 | [diff] [blame^] | 1 | /* Copyright (c) 2016, The Linux Foundation. All rights reserved. |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | */ |
| 12 | |
| 13 | #ifndef _MSM_PROP_H_ |
| 14 | #define _MSM_PROP_H_ |
| 15 | |
| 16 | #include "msm_drv.h" |
| 17 | |
| 18 | #define MSM_PROP_STATE_CACHE_SIZE 2 |
| 19 | |
| 20 | /** |
| 21 | * struct msm_property_data - opaque structure for tracking per |
| 22 | * drm-object per property stuff |
| 23 | * @default_value: Default property value for this drm object |
| 24 | */ |
| 25 | struct msm_property_data { |
| 26 | uint64_t default_value; |
| 27 | }; |
| 28 | |
| 29 | /** |
| 30 | * struct msm_property_info: Structure for property/state helper functions |
| 31 | * @base: Pointer to base drm object (plane/crtc/etc.) |
| 32 | * @dev: Pointer to drm device object |
| 33 | * @property_array: Pointer to array for storing created property objects |
| 34 | * @property_data: Pointer to array for storing private property data |
| 35 | * @property_count: Total number of properties |
| 36 | * @blob_count: Total number of blob properties, should be <= count |
| 37 | * @install_request: Total number of property 'install' requests |
| 38 | * @install_count: Total number of successful 'install' requests |
| 39 | * @recent_idx: Index of property most recently accessed by set/get |
| 40 | * @state_cache: Cache of local states, to prevent alloc/free thrashing |
| 41 | * @state_size: Size of local state structures |
| 42 | * @state_cache_size: Number of state structures currently stored in state_cache |
| 43 | * @property_lock: Mutex to protect local variables |
| 44 | */ |
| 45 | struct msm_property_info { |
| 46 | struct drm_mode_object *base; |
| 47 | struct drm_device *dev; |
| 48 | |
| 49 | struct drm_property **property_array; |
| 50 | struct msm_property_data *property_data; |
| 51 | uint32_t property_count; |
| 52 | uint32_t blob_count; |
| 53 | uint32_t install_request; |
| 54 | uint32_t install_count; |
| 55 | |
| 56 | int32_t recent_idx; |
| 57 | |
| 58 | void *state_cache[MSM_PROP_STATE_CACHE_SIZE]; |
| 59 | uint32_t state_size; |
| 60 | int32_t state_cache_size; |
| 61 | struct mutex property_lock; |
| 62 | }; |
| 63 | |
| 64 | /** |
| 65 | * msm_property_get_default - query default value of a property |
| 66 | * @info: Pointer to property info container struct |
| 67 | * @property_idx: Property index |
| 68 | * Returns: Default value for specified property |
| 69 | */ |
| 70 | static inline |
| 71 | uint64_t msm_property_get_default(struct msm_property_info *info, |
| 72 | uint32_t property_idx) |
| 73 | { |
| 74 | uint64_t rc = 0; |
| 75 | |
| 76 | if (!info) |
| 77 | return 0; |
| 78 | |
| 79 | mutex_lock(&info->property_lock); |
| 80 | if (property_idx < info->property_count) |
| 81 | rc = info->property_data[property_idx].default_value; |
| 82 | mutex_unlock(&info->property_lock); |
| 83 | |
| 84 | return rc; |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * msm_property_init - initialize property info structure |
| 89 | * @info: Pointer to property info container struct |
| 90 | * @base: Pointer to base drm object (plane/crtc/etc.) |
| 91 | * @dev: Pointer to drm device object |
| 92 | * @property_array: Pointer to array for storing created property objects |
| 93 | * @property_data: Pointer to array for storing private property data |
| 94 | * @property_count: Total number of properties |
| 95 | * @blob_count: Total number of blob properties, should be <= count |
| 96 | * @state_size: Size of local state object |
| 97 | */ |
| 98 | void msm_property_init(struct msm_property_info *info, |
| 99 | struct drm_mode_object *base, |
| 100 | struct drm_device *dev, |
| 101 | struct drm_property **property_array, |
| 102 | struct msm_property_data *property_data, |
| 103 | uint32_t property_count, |
| 104 | uint32_t blob_count, |
| 105 | uint32_t state_size); |
| 106 | |
| 107 | /** |
| 108 | * msm_property_destroy - destroy helper info structure |
| 109 | * |
| 110 | * @info: Pointer to property info container struct |
| 111 | */ |
| 112 | void msm_property_destroy(struct msm_property_info *info); |
| 113 | |
| 114 | /** |
| 115 | * msm_property_install_range - install standard drm range property |
| 116 | * @info: Pointer to property info container struct |
| 117 | * @name: Property name |
| 118 | * @min: Min property value |
| 119 | * @max: Max property value |
| 120 | * @init: Default property value |
| 121 | * @property_idx: Property index |
| 122 | */ |
| 123 | void msm_property_install_range(struct msm_property_info *info, |
| 124 | const char *name, |
| 125 | uint64_t min, |
| 126 | uint64_t max, |
| 127 | uint64_t init, |
| 128 | uint32_t property_idx); |
| 129 | |
| 130 | /** |
| 131 | * msm_property_install_rotation - install standard drm rotation property |
| 132 | * @info: Pointer to property info container struct |
| 133 | * @supported_rotations: Bitmask of supported rotation values (see |
| 134 | * drm_mode_create_rotation_property for more details) |
| 135 | * @property_idx: Property index |
| 136 | */ |
| 137 | void msm_property_install_rotation(struct msm_property_info *info, |
| 138 | unsigned int supported_rotations, |
| 139 | uint32_t property_idx); |
| 140 | |
| 141 | /** |
| 142 | * msm_property_install_enum - install standard drm enum/bitmask property |
| 143 | * @info: Pointer to property info container struct |
| 144 | * @name: Property name |
| 145 | * @is_bitmask: Set to non-zero to create a bitmask property, rather than an |
| 146 | * enumeration one |
| 147 | * @values: Array of allowable enumeration/bitmask values |
| 148 | * @num_values: Size of values array |
| 149 | * @property_idx: Property index |
| 150 | */ |
| 151 | void msm_property_install_enum(struct msm_property_info *info, |
| 152 | const char *name, |
| 153 | int is_bitmask, |
| 154 | const struct drm_prop_enum_list *values, |
| 155 | int num_values, |
| 156 | uint32_t property_idx); |
| 157 | |
| 158 | /** |
| 159 | * msm_property_install_blob - install standard drm blob property |
| 160 | * @info: Pointer to property info container struct |
| 161 | * @name: Property name |
| 162 | * @flags: Extra flags for property creation |
| 163 | * @property_idx: Property index |
| 164 | */ |
| 165 | void msm_property_install_blob(struct msm_property_info *info, |
| 166 | const char *name, |
| 167 | int flags, |
| 168 | uint32_t property_idx); |
| 169 | |
| 170 | /** |
| 171 | * msm_property_install_get_status - query overal status of property additions |
| 172 | * @info: Pointer to property info container struct |
| 173 | * Returns: Zero if previous property install calls were all successful |
| 174 | */ |
| 175 | int msm_property_install_get_status(struct msm_property_info *info); |
| 176 | |
| 177 | /** |
| 178 | * msm_property_index - determine property index from drm_property ptr |
| 179 | * @info: Pointer to property info container struct |
| 180 | * @property: Incoming property pointer |
| 181 | * Returns: Valid property index, or -EINVAL on error |
| 182 | */ |
| 183 | int msm_property_index(struct msm_property_info *info, |
| 184 | struct drm_property *property); |
| 185 | |
| 186 | /** |
| 187 | * msm_property_atomic_set - helper function for atomic property set callback |
| 188 | * @info: Pointer to property info container struct |
| 189 | * @property_values: Pointer to property values cache array |
| 190 | * @property_blobs: Pointer to property blobs cache array |
| 191 | * @property: Incoming property pointer |
| 192 | * @val: Incoming property value |
| 193 | * Returns: Zero on success |
| 194 | */ |
| 195 | int msm_property_atomic_set(struct msm_property_info *info, |
| 196 | uint64_t *property_values, |
| 197 | struct drm_property_blob **property_blobs, |
| 198 | struct drm_property *property, |
| 199 | uint64_t val); |
| 200 | |
| 201 | /** |
| 202 | * msm_property_atomic_get - helper function for atomic property get callback |
| 203 | * @info: Pointer to property info container struct |
| 204 | * @property_values: Pointer to property values cache array |
| 205 | * @property_blobs: Pointer to property blobs cache array |
| 206 | * @property: Incoming property pointer |
| 207 | * @val: Pointer to variable for receiving property value |
| 208 | * Returns: Zero on success |
| 209 | */ |
| 210 | int msm_property_atomic_get(struct msm_property_info *info, |
| 211 | uint64_t *property_values, |
| 212 | struct drm_property_blob **property_blobs, |
| 213 | struct drm_property *property, |
| 214 | uint64_t *val); |
| 215 | |
| 216 | /** |
| 217 | * msm_property_alloc_state - helper function for allocating local state objects |
| 218 | * @info: Pointer to property info container struct |
| 219 | */ |
| 220 | void *msm_property_alloc_state(struct msm_property_info *info); |
| 221 | |
| 222 | /** |
| 223 | * msm_property_reset_state - helper function for state reset callback |
| 224 | * @info: Pointer to property info container struct |
| 225 | * @state: Pointer to local state structure |
| 226 | * @property_values: Pointer to property values cache array |
| 227 | * @property_blobs: Pointer to property blobs cache array |
| 228 | */ |
| 229 | void msm_property_reset_state(struct msm_property_info *info, |
| 230 | void *state, |
| 231 | uint64_t *property_values, |
| 232 | struct drm_property_blob **property_blobs); |
| 233 | |
| 234 | /** |
| 235 | * msm_property_duplicate_state - helper function for duplicate state cb |
| 236 | * @info: Pointer to property info container struct |
| 237 | * @old_state: Pointer to original state structure |
| 238 | * @state: Pointer to newly created state structure |
| 239 | * @property_values: Pointer to property values cache array |
| 240 | * @property_blobs: Pointer to property blobs cache array |
| 241 | */ |
| 242 | void msm_property_duplicate_state(struct msm_property_info *info, |
| 243 | void *old_state, |
| 244 | void *state, |
| 245 | uint64_t *property_values, |
| 246 | struct drm_property_blob **property_blobs); |
| 247 | |
| 248 | /** |
| 249 | * msm_property_destroy_state - helper function for destroy state cb |
| 250 | * @info: Pointer to property info container struct |
| 251 | * @state: Pointer to local state structure |
| 252 | * @property_values: Pointer to property values cache array |
| 253 | * @property_blobs: Pointer to property blobs cache array |
| 254 | */ |
| 255 | void msm_property_destroy_state(struct msm_property_info *info, |
| 256 | void *state, |
| 257 | uint64_t *property_values, |
| 258 | struct drm_property_blob **property_blobs); |
| 259 | |
| 260 | /** |
| 261 | * msm_property_get_blob - obtain cached data pointer for drm blob property |
| 262 | * @info: Pointer to property info container struct |
| 263 | * @property_blobs: Pointer to property blobs cache array |
| 264 | * @byte_len: Optional pointer to variable for accepting blob size |
| 265 | * @property_idx: Property index |
| 266 | * Returns: Pointer to blob data |
| 267 | */ |
| 268 | void *msm_property_get_blob(struct msm_property_info *info, |
| 269 | struct drm_property_blob **property_blobs, |
| 270 | size_t *byte_len, |
| 271 | uint32_t property_idx); |
| 272 | |
| 273 | /** |
| 274 | * msm_property_set_blob - update blob property on a drm object |
| 275 | * This function updates the blob property value of the given drm object. Its |
| 276 | * intended use is to update blob properties that have been created with the |
| 277 | * DRM_MODE_PROP_IMMUTABLE flag set. |
| 278 | * @info: Pointer to property info container struct |
| 279 | * @blob_reference: Reference to a pointer that holds the created data blob |
| 280 | * @blob_data: Pointer to blob data |
| 281 | * @byte_len: Length of blob data, in bytes |
| 282 | * @property_idx: Property index |
| 283 | * Returns: Zero on success |
| 284 | */ |
| 285 | int msm_property_set_blob(struct msm_property_info *info, |
| 286 | struct drm_property_blob **blob_reference, |
| 287 | void *blob_data, |
| 288 | size_t byte_len, |
| 289 | uint32_t property_idx); |
| 290 | |
| 291 | #endif /* _MSM_PROP_H_ */ |
| 292 | |