1 /* 2 * Copyright © 2006-2011 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 21 * DEALINGS IN THE SOFTWARE. 22 * 23 * Authors: 24 * jim liu <jim.liu@intel.com> 25 * 26 * FIXME: 27 * We should probably make this generic and share it with Medfield 28 */ 29 30 #include <drm/drmP.h> 31 #include <drm/drm.h> 32 #include <drm/drm_crtc.h> 33 #include <drm/drm_edid.h> 34 #include "psb_intel_drv.h" 35 #include "psb_drv.h" 36 #include "psb_intel_reg.h" 37 #include "cdv_device.h" 38 #include <linux/pm_runtime.h> 39 40 /* hdmi control bits */ 41 #define HDMI_NULL_PACKETS_DURING_VSYNC (1 << 9) 42 #define HDMI_BORDER_ENABLE (1 << 7) 43 #define HDMI_AUDIO_ENABLE (1 << 6) 44 #define HDMI_VSYNC_ACTIVE_HIGH (1 << 4) 45 #define HDMI_HSYNC_ACTIVE_HIGH (1 << 3) 46 /* hdmi-b control bits */ 47 #define HDMIB_PIPE_B_SELECT (1 << 30) 48 49 50 struct mid_intel_hdmi_priv { 51 u32 hdmi_reg; 52 u32 save_HDMIB; 53 bool has_hdmi_sink; 54 bool has_hdmi_audio; 55 /* Should set this when detect hotplug */ 56 bool hdmi_device_connected; 57 struct mdfld_hdmi_i2c *i2c_bus; 58 struct i2c_adapter *hdmi_i2c_adapter; /* for control functions */ 59 struct drm_device *dev; 60 }; 61 62 static void cdv_hdmi_mode_set(struct drm_encoder *encoder, 63 struct drm_display_mode *mode, 64 struct drm_display_mode *adjusted_mode) 65 { 66 struct drm_device *dev = encoder->dev; 67 struct psb_intel_encoder *psb_intel_encoder = to_psb_intel_encoder(encoder); 68 struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_encoder->dev_priv; 69 u32 hdmib; 70 struct drm_crtc *crtc = encoder->crtc; 71 struct psb_intel_crtc *intel_crtc = to_psb_intel_crtc(crtc); 72 73 hdmib = (2 << 10); 74 75 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) 76 hdmib |= HDMI_VSYNC_ACTIVE_HIGH; 77 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) 78 hdmib |= HDMI_HSYNC_ACTIVE_HIGH; 79 80 if (intel_crtc->pipe == 1) 81 hdmib |= HDMIB_PIPE_B_SELECT; 82 83 if (hdmi_priv->has_hdmi_audio) { 84 hdmib |= HDMI_AUDIO_ENABLE; 85 hdmib |= HDMI_NULL_PACKETS_DURING_VSYNC; 86 } 87 88 REG_WRITE(hdmi_priv->hdmi_reg, hdmib); 89 REG_READ(hdmi_priv->hdmi_reg); 90 } 91 92 static bool cdv_hdmi_mode_fixup(struct drm_encoder *encoder, 93 struct drm_display_mode *mode, 94 struct drm_display_mode *adjusted_mode) 95 { 96 return true; 97 } 98 99 static void cdv_hdmi_dpms(struct drm_encoder *encoder, int mode) 100 { 101 struct drm_device *dev = encoder->dev; 102 struct psb_intel_encoder *psb_intel_encoder = 103 to_psb_intel_encoder(encoder); 104 struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_encoder->dev_priv; 105 u32 hdmib; 106 107 hdmib = REG_READ(hdmi_priv->hdmi_reg); 108 109 if (mode != DRM_MODE_DPMS_ON) 110 REG_WRITE(hdmi_priv->hdmi_reg, hdmib & ~HDMIB_PORT_EN); 111 else 112 REG_WRITE(hdmi_priv->hdmi_reg, hdmib | HDMIB_PORT_EN); 113 REG_READ(hdmi_priv->hdmi_reg); 114 } 115 116 static void cdv_hdmi_save(struct drm_connector *connector) 117 { 118 struct drm_device *dev = connector->dev; 119 struct psb_intel_encoder *psb_intel_encoder = 120 psb_intel_attached_encoder(connector); 121 struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_encoder->dev_priv; 122 123 hdmi_priv->save_HDMIB = REG_READ(hdmi_priv->hdmi_reg); 124 } 125 126 static void cdv_hdmi_restore(struct drm_connector *connector) 127 { 128 struct drm_device *dev = connector->dev; 129 struct psb_intel_encoder *psb_intel_encoder = 130 psb_intel_attached_encoder(connector); 131 struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_encoder->dev_priv; 132 133 REG_WRITE(hdmi_priv->hdmi_reg, hdmi_priv->save_HDMIB); 134 REG_READ(hdmi_priv->hdmi_reg); 135 } 136 137 static enum drm_connector_status cdv_hdmi_detect( 138 struct drm_connector *connector, bool force) 139 { 140 struct psb_intel_encoder *psb_intel_encoder = 141 psb_intel_attached_encoder(connector); 142 struct psb_intel_connector *psb_intel_connector = 143 to_psb_intel_connector(connector); 144 struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_encoder->dev_priv; 145 struct edid *edid = NULL; 146 enum drm_connector_status status = connector_status_disconnected; 147 148 edid = drm_get_edid(connector, &psb_intel_encoder->i2c_bus->adapter); 149 150 hdmi_priv->has_hdmi_sink = false; 151 hdmi_priv->has_hdmi_audio = false; 152 if (edid) { 153 if (edid->input & DRM_EDID_INPUT_DIGITAL) { 154 status = connector_status_connected; 155 hdmi_priv->has_hdmi_sink = 156 drm_detect_hdmi_monitor(edid); 157 hdmi_priv->has_hdmi_audio = 158 drm_detect_monitor_audio(edid); 159 } 160 161 psb_intel_connector->base.display_info.raw_edid = NULL; 162 kfree(edid); 163 } 164 return status; 165 } 166 167 static int cdv_hdmi_set_property(struct drm_connector *connector, 168 struct drm_property *property, 169 uint64_t value) 170 { 171 struct drm_encoder *encoder = connector->encoder; 172 173 if (!strcmp(property->name, "scaling mode") && encoder) { 174 struct psb_intel_crtc *crtc = to_psb_intel_crtc(encoder->crtc); 175 bool centre; 176 uint64_t curValue; 177 178 if (!crtc) 179 return -1; 180 181 switch (value) { 182 case DRM_MODE_SCALE_FULLSCREEN: 183 break; 184 case DRM_MODE_SCALE_NO_SCALE: 185 break; 186 case DRM_MODE_SCALE_ASPECT: 187 break; 188 default: 189 return -1; 190 } 191 192 if (drm_connector_property_get_value(connector, 193 property, &curValue)) 194 return -1; 195 196 if (curValue == value) 197 return 0; 198 199 if (drm_connector_property_set_value(connector, 200 property, value)) 201 return -1; 202 203 centre = (curValue == DRM_MODE_SCALE_NO_SCALE) || 204 (value == DRM_MODE_SCALE_NO_SCALE); 205 206 if (crtc->saved_mode.hdisplay != 0 && 207 crtc->saved_mode.vdisplay != 0) { 208 if (centre) { 209 if (!drm_crtc_helper_set_mode(encoder->crtc, &crtc->saved_mode, 210 encoder->crtc->x, encoder->crtc->y, encoder->crtc->fb)) 211 return -1; 212 } else { 213 struct drm_encoder_helper_funcs *helpers 214 = encoder->helper_private; 215 helpers->mode_set(encoder, &crtc->saved_mode, 216 &crtc->saved_adjusted_mode); 217 } 218 } 219 } 220 return 0; 221 } 222 223 /* 224 * Return the list of HDMI DDC modes if available. 225 */ 226 static int cdv_hdmi_get_modes(struct drm_connector *connector) 227 { 228 struct psb_intel_encoder *psb_intel_encoder = 229 psb_intel_attached_encoder(connector); 230 struct edid *edid = NULL; 231 int ret = 0; 232 233 edid = drm_get_edid(connector, &psb_intel_encoder->i2c_bus->adapter); 234 if (edid) { 235 drm_mode_connector_update_edid_property(connector, edid); 236 ret = drm_add_edid_modes(connector, edid); 237 kfree(edid); 238 } 239 return ret; 240 } 241 242 static int cdv_hdmi_mode_valid(struct drm_connector *connector, 243 struct drm_display_mode *mode) 244 { 245 struct drm_psb_private *dev_priv = connector->dev->dev_private; 246 247 if (mode->clock > 165000) 248 return MODE_CLOCK_HIGH; 249 if (mode->clock < 20000) 250 return MODE_CLOCK_HIGH; 251 252 /* just in case */ 253 if (mode->flags & DRM_MODE_FLAG_DBLSCAN) 254 return MODE_NO_DBLESCAN; 255 256 /* just in case */ 257 if (mode->flags & DRM_MODE_FLAG_INTERLACE) 258 return MODE_NO_INTERLACE; 259 260 /* We assume worst case scenario of 32 bpp here, since we don't know */ 261 if ((ALIGN(mode->hdisplay * 4, 64) * mode->vdisplay) > 262 dev_priv->vram_stolen_size) 263 return MODE_MEM; 264 265 return MODE_OK; 266 } 267 268 static void cdv_hdmi_destroy(struct drm_connector *connector) 269 { 270 struct psb_intel_encoder *psb_intel_encoder = 271 psb_intel_attached_encoder(connector); 272 273 if (psb_intel_encoder->i2c_bus) 274 psb_intel_i2c_destroy(psb_intel_encoder->i2c_bus); 275 drm_sysfs_connector_remove(connector); 276 drm_connector_cleanup(connector); 277 kfree(connector); 278 } 279 280 static const struct drm_encoder_helper_funcs cdv_hdmi_helper_funcs = { 281 .dpms = cdv_hdmi_dpms, 282 .mode_fixup = cdv_hdmi_mode_fixup, 283 .prepare = psb_intel_encoder_prepare, 284 .mode_set = cdv_hdmi_mode_set, 285 .commit = psb_intel_encoder_commit, 286 }; 287 288 static const struct drm_connector_helper_funcs 289 cdv_hdmi_connector_helper_funcs = { 290 .get_modes = cdv_hdmi_get_modes, 291 .mode_valid = cdv_hdmi_mode_valid, 292 .best_encoder = psb_intel_best_encoder, 293 }; 294 295 static const struct drm_connector_funcs cdv_hdmi_connector_funcs = { 296 .dpms = drm_helper_connector_dpms, 297 .save = cdv_hdmi_save, 298 .restore = cdv_hdmi_restore, 299 .detect = cdv_hdmi_detect, 300 .fill_modes = drm_helper_probe_single_connector_modes, 301 .set_property = cdv_hdmi_set_property, 302 .destroy = cdv_hdmi_destroy, 303 }; 304 305 void cdv_hdmi_init(struct drm_device *dev, 306 struct psb_intel_mode_device *mode_dev, int reg) 307 { 308 struct psb_intel_encoder *psb_intel_encoder; 309 struct psb_intel_connector *psb_intel_connector; 310 struct drm_connector *connector; 311 struct drm_encoder *encoder; 312 struct mid_intel_hdmi_priv *hdmi_priv; 313 int ddc_bus; 314 315 psb_intel_encoder = kzalloc(sizeof(struct psb_intel_encoder), 316 GFP_KERNEL); 317 318 if (!psb_intel_encoder) 319 return; 320 321 psb_intel_connector = kzalloc(sizeof(struct psb_intel_connector), 322 GFP_KERNEL); 323 324 if (!psb_intel_connector) 325 goto err_connector; 326 327 hdmi_priv = kzalloc(sizeof(struct mid_intel_hdmi_priv), GFP_KERNEL); 328 329 if (!hdmi_priv) 330 goto err_priv; 331 332 connector = &psb_intel_connector->base; 333 encoder = &psb_intel_encoder->base; 334 drm_connector_init(dev, connector, 335 &cdv_hdmi_connector_funcs, 336 DRM_MODE_CONNECTOR_DVID); 337 338 drm_encoder_init(dev, encoder, &psb_intel_lvds_enc_funcs, 339 DRM_MODE_ENCODER_TMDS); 340 341 psb_intel_connector_attach_encoder(psb_intel_connector, 342 psb_intel_encoder); 343 psb_intel_encoder->type = INTEL_OUTPUT_HDMI; 344 hdmi_priv->hdmi_reg = reg; 345 hdmi_priv->has_hdmi_sink = false; 346 psb_intel_encoder->dev_priv = hdmi_priv; 347 348 drm_encoder_helper_add(encoder, &cdv_hdmi_helper_funcs); 349 drm_connector_helper_add(connector, 350 &cdv_hdmi_connector_helper_funcs); 351 connector->display_info.subpixel_order = SubPixelHorizontalRGB; 352 connector->interlace_allowed = false; 353 connector->doublescan_allowed = false; 354 355 drm_connector_attach_property(connector, 356 dev->mode_config.scaling_mode_property, 357 DRM_MODE_SCALE_FULLSCREEN); 358 359 switch (reg) { 360 case SDVOB: 361 ddc_bus = GPIOE; 362 break; 363 case SDVOC: 364 ddc_bus = GPIOD; 365 break; 366 default: 367 DRM_ERROR("unknown reg 0x%x for HDMI\n", reg); 368 goto failed_ddc; 369 break; 370 } 371 372 psb_intel_encoder->i2c_bus = psb_intel_i2c_create(dev, 373 ddc_bus, (reg == SDVOB) ? "HDMIB" : "HDMIC"); 374 375 if (!psb_intel_encoder->i2c_bus) { 376 dev_err(dev->dev, "No ddc adapter available!\n"); 377 goto failed_ddc; 378 } 379 380 hdmi_priv->hdmi_i2c_adapter = 381 &(psb_intel_encoder->i2c_bus->adapter); 382 hdmi_priv->dev = dev; 383 drm_sysfs_connector_add(connector); 384 return; 385 386 failed_ddc: 387 drm_encoder_cleanup(encoder); 388 drm_connector_cleanup(connector); 389 err_priv: 390 kfree(psb_intel_connector); 391 err_connector: 392 kfree(psb_intel_encoder); 393 } 394