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 const 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 mid_intel_hdmi_priv *hdmi_priv = psb_intel_encoder->dev_priv; 143 struct edid *edid = NULL; 144 enum drm_connector_status status = connector_status_disconnected; 145 146 edid = drm_get_edid(connector, &psb_intel_encoder->i2c_bus->adapter); 147 148 hdmi_priv->has_hdmi_sink = false; 149 hdmi_priv->has_hdmi_audio = false; 150 if (edid) { 151 if (edid->input & DRM_EDID_INPUT_DIGITAL) { 152 status = connector_status_connected; 153 hdmi_priv->has_hdmi_sink = 154 drm_detect_hdmi_monitor(edid); 155 hdmi_priv->has_hdmi_audio = 156 drm_detect_monitor_audio(edid); 157 } 158 kfree(edid); 159 } 160 return status; 161 } 162 163 static int cdv_hdmi_set_property(struct drm_connector *connector, 164 struct drm_property *property, 165 uint64_t value) 166 { 167 struct drm_encoder *encoder = connector->encoder; 168 169 if (!strcmp(property->name, "scaling mode") && encoder) { 170 struct psb_intel_crtc *crtc = to_psb_intel_crtc(encoder->crtc); 171 bool centre; 172 uint64_t curValue; 173 174 if (!crtc) 175 return -1; 176 177 switch (value) { 178 case DRM_MODE_SCALE_FULLSCREEN: 179 break; 180 case DRM_MODE_SCALE_NO_SCALE: 181 break; 182 case DRM_MODE_SCALE_ASPECT: 183 break; 184 default: 185 return -1; 186 } 187 188 if (drm_object_property_get_value(&connector->base, 189 property, &curValue)) 190 return -1; 191 192 if (curValue == value) 193 return 0; 194 195 if (drm_object_property_set_value(&connector->base, 196 property, value)) 197 return -1; 198 199 centre = (curValue == DRM_MODE_SCALE_NO_SCALE) || 200 (value == DRM_MODE_SCALE_NO_SCALE); 201 202 if (crtc->saved_mode.hdisplay != 0 && 203 crtc->saved_mode.vdisplay != 0) { 204 if (centre) { 205 if (!drm_crtc_helper_set_mode(encoder->crtc, &crtc->saved_mode, 206 encoder->crtc->x, encoder->crtc->y, encoder->crtc->fb)) 207 return -1; 208 } else { 209 struct drm_encoder_helper_funcs *helpers 210 = encoder->helper_private; 211 helpers->mode_set(encoder, &crtc->saved_mode, 212 &crtc->saved_adjusted_mode); 213 } 214 } 215 } 216 return 0; 217 } 218 219 /* 220 * Return the list of HDMI DDC modes if available. 221 */ 222 static int cdv_hdmi_get_modes(struct drm_connector *connector) 223 { 224 struct psb_intel_encoder *psb_intel_encoder = 225 psb_intel_attached_encoder(connector); 226 struct edid *edid = NULL; 227 int ret = 0; 228 229 edid = drm_get_edid(connector, &psb_intel_encoder->i2c_bus->adapter); 230 if (edid) { 231 drm_mode_connector_update_edid_property(connector, edid); 232 ret = drm_add_edid_modes(connector, edid); 233 kfree(edid); 234 } 235 return ret; 236 } 237 238 static int cdv_hdmi_mode_valid(struct drm_connector *connector, 239 struct drm_display_mode *mode) 240 { 241 if (mode->clock > 165000) 242 return MODE_CLOCK_HIGH; 243 if (mode->clock < 20000) 244 return MODE_CLOCK_HIGH; 245 246 /* just in case */ 247 if (mode->flags & DRM_MODE_FLAG_DBLSCAN) 248 return MODE_NO_DBLESCAN; 249 250 /* just in case */ 251 if (mode->flags & DRM_MODE_FLAG_INTERLACE) 252 return MODE_NO_INTERLACE; 253 254 return MODE_OK; 255 } 256 257 static void cdv_hdmi_destroy(struct drm_connector *connector) 258 { 259 struct psb_intel_encoder *psb_intel_encoder = 260 psb_intel_attached_encoder(connector); 261 262 if (psb_intel_encoder->i2c_bus) 263 psb_intel_i2c_destroy(psb_intel_encoder->i2c_bus); 264 drm_sysfs_connector_remove(connector); 265 drm_connector_cleanup(connector); 266 kfree(connector); 267 } 268 269 static const struct drm_encoder_helper_funcs cdv_hdmi_helper_funcs = { 270 .dpms = cdv_hdmi_dpms, 271 .mode_fixup = cdv_hdmi_mode_fixup, 272 .prepare = psb_intel_encoder_prepare, 273 .mode_set = cdv_hdmi_mode_set, 274 .commit = psb_intel_encoder_commit, 275 }; 276 277 static const struct drm_connector_helper_funcs 278 cdv_hdmi_connector_helper_funcs = { 279 .get_modes = cdv_hdmi_get_modes, 280 .mode_valid = cdv_hdmi_mode_valid, 281 .best_encoder = psb_intel_best_encoder, 282 }; 283 284 static const struct drm_connector_funcs cdv_hdmi_connector_funcs = { 285 .dpms = drm_helper_connector_dpms, 286 .save = cdv_hdmi_save, 287 .restore = cdv_hdmi_restore, 288 .detect = cdv_hdmi_detect, 289 .fill_modes = drm_helper_probe_single_connector_modes, 290 .set_property = cdv_hdmi_set_property, 291 .destroy = cdv_hdmi_destroy, 292 }; 293 294 void cdv_hdmi_init(struct drm_device *dev, 295 struct psb_intel_mode_device *mode_dev, int reg) 296 { 297 struct psb_intel_encoder *psb_intel_encoder; 298 struct psb_intel_connector *psb_intel_connector; 299 struct drm_connector *connector; 300 struct drm_encoder *encoder; 301 struct mid_intel_hdmi_priv *hdmi_priv; 302 int ddc_bus; 303 304 psb_intel_encoder = kzalloc(sizeof(struct psb_intel_encoder), 305 GFP_KERNEL); 306 307 if (!psb_intel_encoder) 308 return; 309 310 psb_intel_connector = kzalloc(sizeof(struct psb_intel_connector), 311 GFP_KERNEL); 312 313 if (!psb_intel_connector) 314 goto err_connector; 315 316 hdmi_priv = kzalloc(sizeof(struct mid_intel_hdmi_priv), GFP_KERNEL); 317 318 if (!hdmi_priv) 319 goto err_priv; 320 321 connector = &psb_intel_connector->base; 322 connector->polled = DRM_CONNECTOR_POLL_HPD; 323 encoder = &psb_intel_encoder->base; 324 drm_connector_init(dev, connector, 325 &cdv_hdmi_connector_funcs, 326 DRM_MODE_CONNECTOR_DVID); 327 328 drm_encoder_init(dev, encoder, &psb_intel_lvds_enc_funcs, 329 DRM_MODE_ENCODER_TMDS); 330 331 psb_intel_connector_attach_encoder(psb_intel_connector, 332 psb_intel_encoder); 333 psb_intel_encoder->type = INTEL_OUTPUT_HDMI; 334 hdmi_priv->hdmi_reg = reg; 335 hdmi_priv->has_hdmi_sink = false; 336 psb_intel_encoder->dev_priv = hdmi_priv; 337 338 drm_encoder_helper_add(encoder, &cdv_hdmi_helper_funcs); 339 drm_connector_helper_add(connector, 340 &cdv_hdmi_connector_helper_funcs); 341 connector->display_info.subpixel_order = SubPixelHorizontalRGB; 342 connector->interlace_allowed = false; 343 connector->doublescan_allowed = false; 344 345 drm_object_attach_property(&connector->base, 346 dev->mode_config.scaling_mode_property, 347 DRM_MODE_SCALE_FULLSCREEN); 348 349 switch (reg) { 350 case SDVOB: 351 ddc_bus = GPIOE; 352 psb_intel_encoder->ddi_select = DDI0_SELECT; 353 break; 354 case SDVOC: 355 ddc_bus = GPIOD; 356 psb_intel_encoder->ddi_select = DDI1_SELECT; 357 break; 358 default: 359 DRM_ERROR("unknown reg 0x%x for HDMI\n", reg); 360 goto failed_ddc; 361 break; 362 } 363 364 psb_intel_encoder->i2c_bus = psb_intel_i2c_create(dev, 365 ddc_bus, (reg == SDVOB) ? "HDMIB" : "HDMIC"); 366 367 if (!psb_intel_encoder->i2c_bus) { 368 dev_err(dev->dev, "No ddc adapter available!\n"); 369 goto failed_ddc; 370 } 371 372 hdmi_priv->hdmi_i2c_adapter = 373 &(psb_intel_encoder->i2c_bus->adapter); 374 hdmi_priv->dev = dev; 375 drm_sysfs_connector_add(connector); 376 return; 377 378 failed_ddc: 379 drm_encoder_cleanup(encoder); 380 drm_connector_cleanup(connector); 381 err_priv: 382 kfree(psb_intel_connector); 383 err_connector: 384 kfree(psb_intel_encoder); 385 } 386