Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 1 | /* exynos_drm_core.c |
| 2 | * |
| 3 | * Copyright (c) 2011 Samsung Electronics Co., Ltd. |
| 4 | * Author: |
| 5 | * Inki Dae <inki.dae@samsung.com> |
| 6 | * Joonyoung Shim <jy0922.shim@samsung.com> |
| 7 | * Seung-Woo Kim <sw0312.kim@samsung.com> |
| 8 | * |
| 9 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 10 | * copy of this software and associated documentation files (the "Software"), |
| 11 | * to deal in the Software without restriction, including without limitation |
| 12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 13 | * and/or sell copies of the Software, and to permit persons to whom the |
| 14 | * Software is furnished to do so, subject to the following conditions: |
| 15 | * |
| 16 | * The above copyright notice and this permission notice (including the next |
| 17 | * paragraph) shall be included in all copies or substantial portions of the |
| 18 | * Software. |
| 19 | * |
| 20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 21 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 23 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 24 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 25 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 26 | * OTHER DEALINGS IN THE SOFTWARE. |
| 27 | */ |
| 28 | |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 29 | #include <drm/drmP.h> |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 30 | #include "exynos_drm_drv.h" |
| 31 | #include "exynos_drm_encoder.h" |
| 32 | #include "exynos_drm_connector.h" |
| 33 | #include "exynos_drm_fbdev.h" |
| 34 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 35 | static LIST_HEAD(exynos_drm_subdrv_list); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 36 | |
Inki Dae | 41fecf3 | 2012-08-17 13:23:25 +0900 | [diff] [blame] | 37 | static int exynos_drm_create_enc_conn(struct drm_device *dev, |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 38 | struct exynos_drm_subdrv *subdrv) |
| 39 | { |
| 40 | struct drm_encoder *encoder; |
| 41 | struct drm_connector *connector; |
Inki Dae | 41fecf3 | 2012-08-17 13:23:25 +0900 | [diff] [blame] | 42 | int ret; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 43 | |
| 44 | DRM_DEBUG_DRIVER("%s\n", __FILE__); |
| 45 | |
Joonyoung Shim | 677e84c | 2012-04-05 20:49:27 +0900 | [diff] [blame] | 46 | subdrv->manager->dev = subdrv->dev; |
| 47 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 48 | /* create and initialize a encoder for this sub driver. */ |
Joonyoung Shim | 677e84c | 2012-04-05 20:49:27 +0900 | [diff] [blame] | 49 | encoder = exynos_drm_encoder_create(dev, subdrv->manager, |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 50 | (1 << MAX_CRTC) - 1); |
| 51 | if (!encoder) { |
| 52 | DRM_ERROR("failed to create encoder\n"); |
| 53 | return -EFAULT; |
| 54 | } |
| 55 | |
| 56 | /* |
| 57 | * create and initialize a connector for this sub driver and |
| 58 | * attach the encoder created above to the connector. |
| 59 | */ |
| 60 | connector = exynos_drm_connector_create(dev, encoder); |
| 61 | if (!connector) { |
| 62 | DRM_ERROR("failed to create connector\n"); |
Inki Dae | 41fecf3 | 2012-08-17 13:23:25 +0900 | [diff] [blame] | 63 | ret = -EFAULT; |
| 64 | goto err_destroy_encoder; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 65 | } |
| 66 | |
| 67 | subdrv->encoder = encoder; |
| 68 | subdrv->connector = connector; |
| 69 | |
| 70 | return 0; |
Inki Dae | 41fecf3 | 2012-08-17 13:23:25 +0900 | [diff] [blame] | 71 | |
| 72 | err_destroy_encoder: |
| 73 | encoder->funcs->destroy(encoder); |
| 74 | return ret; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 75 | } |
| 76 | |
Inki Dae | 41fecf3 | 2012-08-17 13:23:25 +0900 | [diff] [blame] | 77 | static void exynos_drm_destroy_enc_conn(struct exynos_drm_subdrv *subdrv) |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 78 | { |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 79 | if (subdrv->encoder) { |
| 80 | struct drm_encoder *encoder = subdrv->encoder; |
| 81 | encoder->funcs->destroy(encoder); |
| 82 | subdrv->encoder = NULL; |
| 83 | } |
| 84 | |
| 85 | if (subdrv->connector) { |
| 86 | struct drm_connector *connector = subdrv->connector; |
| 87 | connector->funcs->destroy(connector); |
| 88 | subdrv->connector = NULL; |
| 89 | } |
| 90 | } |
| 91 | |
Inki Dae | 41fecf3 | 2012-08-17 13:23:25 +0900 | [diff] [blame] | 92 | static int exynos_drm_subdrv_probe(struct drm_device *dev, |
| 93 | struct exynos_drm_subdrv *subdrv) |
| 94 | { |
| 95 | if (subdrv->probe) { |
| 96 | int ret; |
| 97 | |
| 98 | subdrv->drm_dev = dev; |
| 99 | |
| 100 | /* |
| 101 | * this probe callback would be called by sub driver |
| 102 | * after setting of all resources to this sub driver, |
| 103 | * such as clock, irq and register map are done or by load() |
| 104 | * of exynos drm driver. |
| 105 | * |
| 106 | * P.S. note that this driver is considered for modularization. |
| 107 | */ |
| 108 | ret = subdrv->probe(dev, subdrv->dev); |
| 109 | if (ret) |
| 110 | return ret; |
| 111 | } |
| 112 | |
| 113 | return 0; |
| 114 | } |
| 115 | |
| 116 | static void exynos_drm_subdrv_remove(struct drm_device *dev, |
| 117 | struct exynos_drm_subdrv *subdrv) |
| 118 | { |
| 119 | DRM_DEBUG_DRIVER("%s\n", __FILE__); |
| 120 | |
| 121 | if (subdrv->remove) |
| 122 | subdrv->remove(dev, subdrv->dev); |
| 123 | } |
| 124 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 125 | int exynos_drm_device_register(struct drm_device *dev) |
| 126 | { |
| 127 | struct exynos_drm_subdrv *subdrv, *n; |
Inki Dae | 41fecf3 | 2012-08-17 13:23:25 +0900 | [diff] [blame] | 128 | unsigned int fine_cnt = 0; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 129 | int err; |
| 130 | |
| 131 | DRM_DEBUG_DRIVER("%s\n", __FILE__); |
| 132 | |
| 133 | if (!dev) |
| 134 | return -EINVAL; |
| 135 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 136 | list_for_each_entry_safe(subdrv, n, &exynos_drm_subdrv_list, list) { |
| 137 | err = exynos_drm_subdrv_probe(dev, subdrv); |
| 138 | if (err) { |
| 139 | DRM_DEBUG("exynos drm subdrv probe failed.\n"); |
| 140 | list_del(&subdrv->list); |
Inki Dae | 41fecf3 | 2012-08-17 13:23:25 +0900 | [diff] [blame] | 141 | continue; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 142 | } |
Inki Dae | 41fecf3 | 2012-08-17 13:23:25 +0900 | [diff] [blame] | 143 | |
| 144 | /* |
| 145 | * if manager is null then it means that this sub driver |
| 146 | * doesn't need encoder and connector. |
| 147 | */ |
| 148 | if (!subdrv->manager) { |
| 149 | fine_cnt++; |
| 150 | continue; |
| 151 | } |
| 152 | |
| 153 | err = exynos_drm_create_enc_conn(dev, subdrv); |
| 154 | if (err) { |
| 155 | DRM_DEBUG("failed to create encoder and connector.\n"); |
| 156 | exynos_drm_subdrv_remove(dev, subdrv); |
| 157 | list_del(&subdrv->list); |
| 158 | continue; |
| 159 | } |
| 160 | |
| 161 | fine_cnt++; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 162 | } |
| 163 | |
Inki Dae | 41fecf3 | 2012-08-17 13:23:25 +0900 | [diff] [blame] | 164 | if (!fine_cnt) |
| 165 | return -EINVAL; |
| 166 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 167 | return 0; |
| 168 | } |
| 169 | EXPORT_SYMBOL_GPL(exynos_drm_device_register); |
| 170 | |
| 171 | int exynos_drm_device_unregister(struct drm_device *dev) |
| 172 | { |
| 173 | struct exynos_drm_subdrv *subdrv; |
| 174 | |
| 175 | DRM_DEBUG_DRIVER("%s\n", __FILE__); |
| 176 | |
Joonyoung Shim | 132a5b9 | 2012-03-16 18:47:08 +0900 | [diff] [blame] | 177 | if (!dev) { |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 178 | WARN(1, "Unexpected drm device unregister!\n"); |
| 179 | return -EINVAL; |
| 180 | } |
| 181 | |
Inki Dae | 41fecf3 | 2012-08-17 13:23:25 +0900 | [diff] [blame] | 182 | list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) { |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 183 | exynos_drm_subdrv_remove(dev, subdrv); |
Inki Dae | 41fecf3 | 2012-08-17 13:23:25 +0900 | [diff] [blame] | 184 | exynos_drm_destroy_enc_conn(subdrv); |
| 185 | } |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 186 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 187 | return 0; |
| 188 | } |
| 189 | EXPORT_SYMBOL_GPL(exynos_drm_device_unregister); |
| 190 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 191 | int exynos_drm_subdrv_register(struct exynos_drm_subdrv *subdrv) |
| 192 | { |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 193 | DRM_DEBUG_DRIVER("%s\n", __FILE__); |
| 194 | |
| 195 | if (!subdrv) |
| 196 | return -EINVAL; |
| 197 | |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 198 | list_add_tail(&subdrv->list, &exynos_drm_subdrv_list); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 199 | |
| 200 | return 0; |
| 201 | } |
| 202 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_register); |
| 203 | |
| 204 | int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *subdrv) |
| 205 | { |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 206 | DRM_DEBUG_DRIVER("%s\n", __FILE__); |
| 207 | |
Joonyoung Shim | 132a5b9 | 2012-03-16 18:47:08 +0900 | [diff] [blame] | 208 | if (!subdrv) |
| 209 | return -EINVAL; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 210 | |
Joonyoung Shim | 132a5b9 | 2012-03-16 18:47:08 +0900 | [diff] [blame] | 211 | list_del(&subdrv->list); |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 212 | |
Joonyoung Shim | 132a5b9 | 2012-03-16 18:47:08 +0900 | [diff] [blame] | 213 | return 0; |
Inki Dae | 1c248b7 | 2011-10-04 19:19:01 +0900 | [diff] [blame] | 214 | } |
| 215 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_unregister); |
Joonyoung Shim | 9084f7b | 2012-03-16 18:47:09 +0900 | [diff] [blame] | 216 | |
| 217 | int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file) |
| 218 | { |
| 219 | struct exynos_drm_subdrv *subdrv; |
| 220 | int ret; |
| 221 | |
| 222 | list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) { |
| 223 | if (subdrv->open) { |
Joonyoung Shim | 677e84c | 2012-04-05 20:49:27 +0900 | [diff] [blame] | 224 | ret = subdrv->open(dev, subdrv->dev, file); |
Joonyoung Shim | 9084f7b | 2012-03-16 18:47:09 +0900 | [diff] [blame] | 225 | if (ret) |
| 226 | goto err; |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | return 0; |
| 231 | |
| 232 | err: |
| 233 | list_for_each_entry_reverse(subdrv, &subdrv->list, list) { |
| 234 | if (subdrv->close) |
Joonyoung Shim | 677e84c | 2012-04-05 20:49:27 +0900 | [diff] [blame] | 235 | subdrv->close(dev, subdrv->dev, file); |
Joonyoung Shim | 9084f7b | 2012-03-16 18:47:09 +0900 | [diff] [blame] | 236 | } |
| 237 | return ret; |
| 238 | } |
| 239 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_open); |
| 240 | |
| 241 | void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file) |
| 242 | { |
| 243 | struct exynos_drm_subdrv *subdrv; |
| 244 | |
| 245 | list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) { |
| 246 | if (subdrv->close) |
Joonyoung Shim | 677e84c | 2012-04-05 20:49:27 +0900 | [diff] [blame] | 247 | subdrv->close(dev, subdrv->dev, file); |
Joonyoung Shim | 9084f7b | 2012-03-16 18:47:09 +0900 | [diff] [blame] | 248 | } |
| 249 | } |
| 250 | EXPORT_SYMBOL_GPL(exynos_drm_subdrv_close); |