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 gma_encoder *gma_encoder = to_gma_encoder(encoder); 68 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 69 u32 hdmib; 70 struct drm_crtc *crtc = encoder->crtc; 71 struct gma_crtc *gma_crtc = to_gma_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 (gma_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 gma_encoder *gma_encoder = to_gma_encoder(encoder); 103 struct mid_intel_hdmi_priv *hdmi_priv = gma_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 gma_encoder *gma_encoder = gma_attached_encoder(connector); 119 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 120 121 hdmi_priv->save_HDMIB = REG_READ(hdmi_priv->hdmi_reg); 122 } 123 124 static void cdv_hdmi_restore(struct drm_connector *connector) 125 { 126 struct drm_device *dev = connector->dev; 127 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 128 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 129 130 REG_WRITE(hdmi_priv->hdmi_reg, hdmi_priv->save_HDMIB); 131 REG_READ(hdmi_priv->hdmi_reg); 132 } 133 134 static enum drm_connector_status cdv_hdmi_detect( 135 struct drm_connector *connector, bool force) 136 { 137 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 138 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 139 struct edid *edid = NULL; 140 enum drm_connector_status status = connector_status_disconnected; 141 142 edid = drm_get_edid(connector, &gma_encoder->i2c_bus->adapter); 143 144 hdmi_priv->has_hdmi_sink = false; 145 hdmi_priv->has_hdmi_audio = false; 146 if (edid) { 147 if (edid->input & DRM_EDID_INPUT_DIGITAL) { 148 status = connector_status_connected; 149 hdmi_priv->has_hdmi_sink = 150 drm_detect_hdmi_monitor(edid); 151 hdmi_priv->has_hdmi_audio = 152 drm_detect_monitor_audio(edid); 153 } 154 kfree(edid); 155 } 156 return status; 157 } 158 159 static int cdv_hdmi_set_property(struct drm_connector *connector, 160 struct drm_property *property, 161 uint64_t value) 162 { 163 struct drm_encoder *encoder = connector->encoder; 164 165 if (!strcmp(property->name, "scaling mode") && encoder) { 166 struct gma_crtc *crtc = to_gma_crtc(encoder->crtc); 167 bool centre; 168 uint64_t curValue; 169 170 if (!crtc) 171 return -1; 172 173 switch (value) { 174 case DRM_MODE_SCALE_FULLSCREEN: 175 break; 176 case DRM_MODE_SCALE_NO_SCALE: 177 break; 178 case DRM_MODE_SCALE_ASPECT: 179 break; 180 default: 181 return -1; 182 } 183 184 if (drm_object_property_get_value(&connector->base, 185 property, &curValue)) 186 return -1; 187 188 if (curValue == value) 189 return 0; 190 191 if (drm_object_property_set_value(&connector->base, 192 property, value)) 193 return -1; 194 195 centre = (curValue == DRM_MODE_SCALE_NO_SCALE) || 196 (value == DRM_MODE_SCALE_NO_SCALE); 197 198 if (crtc->saved_mode.hdisplay != 0 && 199 crtc->saved_mode.vdisplay != 0) { 200 if (centre) { 201 if (!drm_crtc_helper_set_mode(encoder->crtc, &crtc->saved_mode, 202 encoder->crtc->x, encoder->crtc->y, encoder->crtc->fb)) 203 return -1; 204 } else { 205 struct drm_encoder_helper_funcs *helpers 206 = encoder->helper_private; 207 helpers->mode_set(encoder, &crtc->saved_mode, 208 &crtc->saved_adjusted_mode); 209 } 210 } 211 } 212 return 0; 213 } 214 215 /* 216 * Return the list of HDMI DDC modes if available. 217 */ 218 static int cdv_hdmi_get_modes(struct drm_connector *connector) 219 { 220 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 221 struct edid *edid = NULL; 222 int ret = 0; 223 224 edid = drm_get_edid(connector, &gma_encoder->i2c_bus->adapter); 225 if (edid) { 226 drm_mode_connector_update_edid_property(connector, edid); 227 ret = drm_add_edid_modes(connector, edid); 228 kfree(edid); 229 } 230 return ret; 231 } 232 233 static int cdv_hdmi_mode_valid(struct drm_connector *connector, 234 struct drm_display_mode *mode) 235 { 236 if (mode->clock > 165000) 237 return MODE_CLOCK_HIGH; 238 if (mode->clock < 20000) 239 return MODE_CLOCK_HIGH; 240 241 /* just in case */ 242 if (mode->flags & DRM_MODE_FLAG_DBLSCAN) 243 return MODE_NO_DBLESCAN; 244 245 /* just in case */ 246 if (mode->flags & DRM_MODE_FLAG_INTERLACE) 247 return MODE_NO_INTERLACE; 248 249 return MODE_OK; 250 } 251 252 static void cdv_hdmi_destroy(struct drm_connector *connector) 253 { 254 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 255 256 if (gma_encoder->i2c_bus) 257 psb_intel_i2c_destroy(gma_encoder->i2c_bus); 258 drm_sysfs_connector_remove(connector); 259 drm_connector_cleanup(connector); 260 kfree(connector); 261 } 262 263 static const struct drm_encoder_helper_funcs cdv_hdmi_helper_funcs = { 264 .dpms = cdv_hdmi_dpms, 265 .mode_fixup = cdv_hdmi_mode_fixup, 266 .prepare = gma_encoder_prepare, 267 .mode_set = cdv_hdmi_mode_set, 268 .commit = gma_encoder_commit, 269 }; 270 271 static const struct drm_connector_helper_funcs 272 cdv_hdmi_connector_helper_funcs = { 273 .get_modes = cdv_hdmi_get_modes, 274 .mode_valid = cdv_hdmi_mode_valid, 275 .best_encoder = gma_best_encoder, 276 }; 277 278 static const struct drm_connector_funcs cdv_hdmi_connector_funcs = { 279 .dpms = drm_helper_connector_dpms, 280 .save = cdv_hdmi_save, 281 .restore = cdv_hdmi_restore, 282 .detect = cdv_hdmi_detect, 283 .fill_modes = drm_helper_probe_single_connector_modes, 284 .set_property = cdv_hdmi_set_property, 285 .destroy = cdv_hdmi_destroy, 286 }; 287 288 void cdv_hdmi_init(struct drm_device *dev, 289 struct psb_intel_mode_device *mode_dev, int reg) 290 { 291 struct gma_encoder *gma_encoder; 292 struct gma_connector *gma_connector; 293 struct drm_connector *connector; 294 struct drm_encoder *encoder; 295 struct mid_intel_hdmi_priv *hdmi_priv; 296 int ddc_bus; 297 298 gma_encoder = kzalloc(sizeof(struct gma_encoder), GFP_KERNEL); 299 300 if (!gma_encoder) 301 return; 302 303 gma_connector = kzalloc(sizeof(struct gma_connector), 304 GFP_KERNEL); 305 306 if (!gma_connector) 307 goto err_connector; 308 309 hdmi_priv = kzalloc(sizeof(struct mid_intel_hdmi_priv), GFP_KERNEL); 310 311 if (!hdmi_priv) 312 goto err_priv; 313 314 connector = &gma_connector->base; 315 connector->polled = DRM_CONNECTOR_POLL_HPD; 316 encoder = &gma_encoder->base; 317 drm_connector_init(dev, connector, 318 &cdv_hdmi_connector_funcs, 319 DRM_MODE_CONNECTOR_DVID); 320 321 drm_encoder_init(dev, encoder, &psb_intel_lvds_enc_funcs, 322 DRM_MODE_ENCODER_TMDS); 323 324 gma_connector_attach_encoder(gma_connector, gma_encoder); 325 gma_encoder->type = INTEL_OUTPUT_HDMI; 326 hdmi_priv->hdmi_reg = reg; 327 hdmi_priv->has_hdmi_sink = false; 328 gma_encoder->dev_priv = hdmi_priv; 329 330 drm_encoder_helper_add(encoder, &cdv_hdmi_helper_funcs); 331 drm_connector_helper_add(connector, 332 &cdv_hdmi_connector_helper_funcs); 333 connector->display_info.subpixel_order = SubPixelHorizontalRGB; 334 connector->interlace_allowed = false; 335 connector->doublescan_allowed = false; 336 337 drm_object_attach_property(&connector->base, 338 dev->mode_config.scaling_mode_property, 339 DRM_MODE_SCALE_FULLSCREEN); 340 341 switch (reg) { 342 case SDVOB: 343 ddc_bus = GPIOE; 344 gma_encoder->ddi_select = DDI0_SELECT; 345 break; 346 case SDVOC: 347 ddc_bus = GPIOD; 348 gma_encoder->ddi_select = DDI1_SELECT; 349 break; 350 default: 351 DRM_ERROR("unknown reg 0x%x for HDMI\n", reg); 352 goto failed_ddc; 353 break; 354 } 355 356 gma_encoder->i2c_bus = psb_intel_i2c_create(dev, 357 ddc_bus, (reg == SDVOB) ? "HDMIB" : "HDMIC"); 358 359 if (!gma_encoder->i2c_bus) { 360 dev_err(dev->dev, "No ddc adapter available!\n"); 361 goto failed_ddc; 362 } 363 364 hdmi_priv->hdmi_i2c_adapter = &(gma_encoder->i2c_bus->adapter); 365 hdmi_priv->dev = dev; 366 drm_sysfs_connector_add(connector); 367 return; 368 369 failed_ddc: 370 drm_encoder_cleanup(encoder); 371 drm_connector_cleanup(connector); 372 err_priv: 373 kfree(gma_connector); 374 err_connector: 375 kfree(gma_encoder); 376 } 377