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 <linux/pm_runtime.h> 38 39 /* hdmi control bits */ 40 #define HDMI_NULL_PACKETS_DURING_VSYNC (1 << 9) 41 #define HDMI_BORDER_ENABLE (1 << 7) 42 #define HDMI_AUDIO_ENABLE (1 << 6) 43 #define HDMI_VSYNC_ACTIVE_HIGH (1 << 4) 44 #define HDMI_HSYNC_ACTIVE_HIGH (1 << 3) 45 /* hdmi-b control bits */ 46 #define HDMIB_PIPE_B_SELECT (1 << 30) 47 48 49 struct mid_intel_hdmi_priv { 50 u32 hdmi_reg; 51 u32 save_HDMIB; 52 bool has_hdmi_sink; 53 bool has_hdmi_audio; 54 /* Should set this when detect hotplug */ 55 bool hdmi_device_connected; 56 struct mdfld_hdmi_i2c *i2c_bus; 57 struct i2c_adapter *hdmi_i2c_adapter; /* for control functions */ 58 struct drm_device *dev; 59 }; 60 61 static void cdv_hdmi_mode_set(struct drm_encoder *encoder, 62 struct drm_display_mode *mode, 63 struct drm_display_mode *adjusted_mode) 64 { 65 struct drm_device *dev = encoder->dev; 66 struct psb_intel_encoder *psb_intel_encoder = to_psb_intel_encoder(encoder); 67 struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_encoder->dev_priv; 68 u32 hdmib; 69 struct drm_crtc *crtc = encoder->crtc; 70 struct psb_intel_crtc *intel_crtc = to_psb_intel_crtc(crtc); 71 72 hdmib = (2 << 10); 73 74 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) 75 hdmib |= HDMI_VSYNC_ACTIVE_HIGH; 76 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) 77 hdmib |= HDMI_HSYNC_ACTIVE_HIGH; 78 79 if (intel_crtc->pipe == 1) 80 hdmib |= HDMIB_PIPE_B_SELECT; 81 82 if (hdmi_priv->has_hdmi_audio) { 83 hdmib |= HDMI_AUDIO_ENABLE; 84 hdmib |= HDMI_NULL_PACKETS_DURING_VSYNC; 85 } 86 87 REG_WRITE(hdmi_priv->hdmi_reg, hdmib); 88 REG_READ(hdmi_priv->hdmi_reg); 89 } 90 91 static bool cdv_hdmi_mode_fixup(struct drm_encoder *encoder, 92 struct drm_display_mode *mode, 93 struct drm_display_mode *adjusted_mode) 94 { 95 return true; 96 } 97 98 static void cdv_hdmi_dpms(struct drm_encoder *encoder, int mode) 99 { 100 struct drm_device *dev = encoder->dev; 101 struct psb_intel_encoder *psb_intel_encoder = 102 to_psb_intel_encoder(encoder); 103 struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_encoder->dev_priv; 104 u32 hdmib; 105 106 hdmib = REG_READ(hdmi_priv->hdmi_reg); 107 108 if (mode != DRM_MODE_DPMS_ON) 109 REG_WRITE(hdmi_priv->hdmi_reg, hdmib & ~HDMIB_PORT_EN); 110 else 111 REG_WRITE(hdmi_priv->hdmi_reg, hdmib | HDMIB_PORT_EN); 112 REG_READ(hdmi_priv->hdmi_reg); 113 } 114 115 static void cdv_hdmi_save(struct drm_connector *connector) 116 { 117 struct drm_device *dev = connector->dev; 118 struct psb_intel_encoder *psb_intel_encoder = 119 psb_intel_attached_encoder(connector); 120 struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_encoder->dev_priv; 121 122 hdmi_priv->save_HDMIB = REG_READ(hdmi_priv->hdmi_reg); 123 } 124 125 static void cdv_hdmi_restore(struct drm_connector *connector) 126 { 127 struct drm_device *dev = connector->dev; 128 struct psb_intel_encoder *psb_intel_encoder = 129 psb_intel_attached_encoder(connector); 130 struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_encoder->dev_priv; 131 132 REG_WRITE(hdmi_priv->hdmi_reg, hdmi_priv->save_HDMIB); 133 REG_READ(hdmi_priv->hdmi_reg); 134 } 135 136 static enum drm_connector_status cdv_hdmi_detect( 137 struct drm_connector *connector, bool force) 138 { 139 struct psb_intel_encoder *psb_intel_encoder = 140 psb_intel_attached_encoder(connector); 141 struct psb_intel_connector *psb_intel_connector = 142 to_psb_intel_connector(connector); 143 struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_encoder->dev_priv; 144 struct edid *edid = NULL; 145 enum drm_connector_status status = connector_status_disconnected; 146 147 edid = drm_get_edid(connector, &psb_intel_encoder->i2c_bus->adapter); 148 149 hdmi_priv->has_hdmi_sink = false; 150 hdmi_priv->has_hdmi_audio = false; 151 if (edid) { 152 if (edid->input & DRM_EDID_INPUT_DIGITAL) { 153 status = connector_status_connected; 154 hdmi_priv->has_hdmi_sink = 155 drm_detect_hdmi_monitor(edid); 156 hdmi_priv->has_hdmi_audio = 157 drm_detect_monitor_audio(edid); 158 } 159 160 psb_intel_connector->base.display_info.raw_edid = NULL; 161 kfree(edid); 162 } 163 return status; 164 } 165 166 static int cdv_hdmi_set_property(struct drm_connector *connector, 167 struct drm_property *property, 168 uint64_t value) 169 { 170 struct drm_encoder *encoder = connector->encoder; 171 172 if (!strcmp(property->name, "scaling mode") && encoder) { 173 struct psb_intel_crtc *crtc = to_psb_intel_crtc(encoder->crtc); 174 bool centre; 175 uint64_t curValue; 176 177 if (!crtc) 178 return -1; 179 180 switch (value) { 181 case DRM_MODE_SCALE_FULLSCREEN: 182 break; 183 case DRM_MODE_SCALE_NO_SCALE: 184 break; 185 case DRM_MODE_SCALE_ASPECT: 186 break; 187 default: 188 return -1; 189 } 190 191 if (drm_connector_property_get_value(connector, 192 property, &curValue)) 193 return -1; 194 195 if (curValue == value) 196 return 0; 197 198 if (drm_connector_property_set_value(connector, 199 property, value)) 200 return -1; 201 202 centre = (curValue == DRM_MODE_SCALE_NO_SCALE) || 203 (value == DRM_MODE_SCALE_NO_SCALE); 204 205 if (crtc->saved_mode.hdisplay != 0 && 206 crtc->saved_mode.vdisplay != 0) { 207 if (centre) { 208 if (!drm_crtc_helper_set_mode(encoder->crtc, &crtc->saved_mode, 209 encoder->crtc->x, encoder->crtc->y, encoder->crtc->fb)) 210 return -1; 211 } else { 212 struct drm_encoder_helper_funcs *helpers 213 = encoder->helper_private; 214 helpers->mode_set(encoder, &crtc->saved_mode, 215 &crtc->saved_adjusted_mode); 216 } 217 } 218 } 219 return 0; 220 } 221 222 /* 223 * Return the list of HDMI DDC modes if available. 224 */ 225 static int cdv_hdmi_get_modes(struct drm_connector *connector) 226 { 227 struct psb_intel_encoder *psb_intel_encoder = 228 psb_intel_attached_encoder(connector); 229 struct edid *edid = NULL; 230 int ret = 0; 231 232 edid = drm_get_edid(connector, &psb_intel_encoder->i2c_bus->adapter); 233 if (edid) { 234 drm_mode_connector_update_edid_property(connector, edid); 235 ret = drm_add_edid_modes(connector, edid); 236 kfree(edid); 237 } 238 return ret; 239 } 240 241 static int cdv_hdmi_mode_valid(struct drm_connector *connector, 242 struct drm_display_mode *mode) 243 { 244 struct drm_psb_private *dev_priv = connector->dev->dev_private; 245 246 if (mode->clock > 165000) 247 return MODE_CLOCK_HIGH; 248 if (mode->clock < 20000) 249 return MODE_CLOCK_HIGH; 250 251 /* just in case */ 252 if (mode->flags & DRM_MODE_FLAG_DBLSCAN) 253 return MODE_NO_DBLESCAN; 254 255 /* just in case */ 256 if (mode->flags & DRM_MODE_FLAG_INTERLACE) 257 return MODE_NO_INTERLACE; 258 259 /* We assume worst case scenario of 32 bpp here, since we don't know */ 260 if ((ALIGN(mode->hdisplay * 4, 64) * mode->vdisplay) > 261 dev_priv->vram_stolen_size) 262 return MODE_MEM; 263 264 return MODE_OK; 265 } 266 267 static void cdv_hdmi_destroy(struct drm_connector *connector) 268 { 269 struct psb_intel_encoder *psb_intel_encoder = 270 psb_intel_attached_encoder(connector); 271 272 if (psb_intel_encoder->i2c_bus) 273 psb_intel_i2c_destroy(psb_intel_encoder->i2c_bus); 274 drm_sysfs_connector_remove(connector); 275 drm_connector_cleanup(connector); 276 kfree(connector); 277 } 278 279 static const struct drm_encoder_helper_funcs cdv_hdmi_helper_funcs = { 280 .dpms = cdv_hdmi_dpms, 281 .mode_fixup = cdv_hdmi_mode_fixup, 282 .prepare = psb_intel_encoder_prepare, 283 .mode_set = cdv_hdmi_mode_set, 284 .commit = psb_intel_encoder_commit, 285 }; 286 287 static const struct drm_connector_helper_funcs 288 cdv_hdmi_connector_helper_funcs = { 289 .get_modes = cdv_hdmi_get_modes, 290 .mode_valid = cdv_hdmi_mode_valid, 291 .best_encoder = psb_intel_best_encoder, 292 }; 293 294 static const struct drm_connector_funcs cdv_hdmi_connector_funcs = { 295 .dpms = drm_helper_connector_dpms, 296 .save = cdv_hdmi_save, 297 .restore = cdv_hdmi_restore, 298 .detect = cdv_hdmi_detect, 299 .fill_modes = drm_helper_probe_single_connector_modes, 300 .set_property = cdv_hdmi_set_property, 301 .destroy = cdv_hdmi_destroy, 302 }; 303 304 void cdv_hdmi_init(struct drm_device *dev, 305 struct psb_intel_mode_device *mode_dev, int reg) 306 { 307 struct psb_intel_encoder *psb_intel_encoder; 308 struct psb_intel_connector *psb_intel_connector; 309 struct drm_connector *connector; 310 struct drm_encoder *encoder; 311 struct mid_intel_hdmi_priv *hdmi_priv; 312 int ddc_bus; 313 314 psb_intel_encoder = kzalloc(sizeof(struct psb_intel_encoder), 315 GFP_KERNEL); 316 317 if (!psb_intel_encoder) 318 return; 319 320 psb_intel_connector = kzalloc(sizeof(struct psb_intel_connector), 321 GFP_KERNEL); 322 323 if (!psb_intel_connector) 324 goto err_connector; 325 326 hdmi_priv = kzalloc(sizeof(struct mid_intel_hdmi_priv), GFP_KERNEL); 327 328 if (!hdmi_priv) 329 goto err_priv; 330 331 connector = &psb_intel_connector->base; 332 encoder = &psb_intel_encoder->base; 333 drm_connector_init(dev, connector, 334 &cdv_hdmi_connector_funcs, 335 DRM_MODE_CONNECTOR_DVID); 336 337 drm_encoder_init(dev, encoder, &psb_intel_lvds_enc_funcs, 338 DRM_MODE_ENCODER_TMDS); 339 340 psb_intel_connector_attach_encoder(psb_intel_connector, 341 psb_intel_encoder); 342 psb_intel_encoder->type = INTEL_OUTPUT_HDMI; 343 hdmi_priv->hdmi_reg = reg; 344 hdmi_priv->has_hdmi_sink = false; 345 psb_intel_encoder->dev_priv = hdmi_priv; 346 347 drm_encoder_helper_add(encoder, &cdv_hdmi_helper_funcs); 348 drm_connector_helper_add(connector, 349 &cdv_hdmi_connector_helper_funcs); 350 connector->display_info.subpixel_order = SubPixelHorizontalRGB; 351 connector->interlace_allowed = false; 352 connector->doublescan_allowed = false; 353 354 drm_connector_attach_property(connector, 355 dev->mode_config.scaling_mode_property, 356 DRM_MODE_SCALE_FULLSCREEN); 357 358 switch (reg) { 359 case SDVOB: 360 ddc_bus = GPIOE; 361 break; 362 case SDVOC: 363 ddc_bus = GPIOD; 364 break; 365 default: 366 DRM_ERROR("unknown reg 0x%x for HDMI\n", reg); 367 goto failed_ddc; 368 break; 369 } 370 371 psb_intel_encoder->i2c_bus = psb_intel_i2c_create(dev, 372 ddc_bus, (reg == SDVOB) ? "HDMIB" : "HDMIC"); 373 374 if (!psb_intel_encoder->i2c_bus) { 375 dev_err(dev->dev, "No ddc adapter available!\n"); 376 goto failed_ddc; 377 } 378 379 hdmi_priv->hdmi_i2c_adapter = 380 &(psb_intel_encoder->i2c_bus->adapter); 381 hdmi_priv->dev = dev; 382 drm_sysfs_connector_add(connector); 383 return; 384 385 failed_ddc: 386 drm_encoder_cleanup(encoder); 387 drm_connector_cleanup(connector); 388 err_priv: 389 kfree(psb_intel_connector); 390 err_connector: 391 kfree(psb_intel_encoder); 392 } 393