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 <linux/pm_runtime.h> 31 32 #include <drm/drm.h> 33 #include <drm/drm_crtc.h> 34 #include <drm/drm_edid.h> 35 #include <drm/drm_simple_kms_helper.h> 36 37 #include "cdv_device.h" 38 #include "psb_drv.h" 39 #include "psb_intel_drv.h" 40 #include "psb_intel_reg.h" 41 42 /* hdmi control bits */ 43 #define HDMI_NULL_PACKETS_DURING_VSYNC (1 << 9) 44 #define HDMI_BORDER_ENABLE (1 << 7) 45 #define HDMI_AUDIO_ENABLE (1 << 6) 46 #define HDMI_VSYNC_ACTIVE_HIGH (1 << 4) 47 #define HDMI_HSYNC_ACTIVE_HIGH (1 << 3) 48 /* hdmi-b control bits */ 49 #define HDMIB_PIPE_B_SELECT (1 << 30) 50 51 52 struct mid_intel_hdmi_priv { 53 u32 hdmi_reg; 54 u32 save_HDMIB; 55 bool has_hdmi_sink; 56 bool has_hdmi_audio; 57 /* Should set this when detect hotplug */ 58 bool hdmi_device_connected; 59 struct mdfld_hdmi_i2c *i2c_bus; 60 struct i2c_adapter *hdmi_i2c_adapter; /* for control functions */ 61 struct drm_device *dev; 62 }; 63 64 static void cdv_hdmi_mode_set(struct drm_encoder *encoder, 65 struct drm_display_mode *mode, 66 struct drm_display_mode *adjusted_mode) 67 { 68 struct drm_device *dev = encoder->dev; 69 struct gma_encoder *gma_encoder = to_gma_encoder(encoder); 70 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 71 u32 hdmib; 72 struct drm_crtc *crtc = encoder->crtc; 73 struct gma_crtc *gma_crtc = to_gma_crtc(crtc); 74 75 hdmib = (2 << 10); 76 77 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) 78 hdmib |= HDMI_VSYNC_ACTIVE_HIGH; 79 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) 80 hdmib |= HDMI_HSYNC_ACTIVE_HIGH; 81 82 if (gma_crtc->pipe == 1) 83 hdmib |= HDMIB_PIPE_B_SELECT; 84 85 if (hdmi_priv->has_hdmi_audio) { 86 hdmib |= HDMI_AUDIO_ENABLE; 87 hdmib |= HDMI_NULL_PACKETS_DURING_VSYNC; 88 } 89 90 REG_WRITE(hdmi_priv->hdmi_reg, hdmib); 91 REG_READ(hdmi_priv->hdmi_reg); 92 } 93 94 static void cdv_hdmi_dpms(struct drm_encoder *encoder, int mode) 95 { 96 struct drm_device *dev = encoder->dev; 97 struct gma_encoder *gma_encoder = to_gma_encoder(encoder); 98 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 99 u32 hdmib; 100 101 hdmib = REG_READ(hdmi_priv->hdmi_reg); 102 103 if (mode != DRM_MODE_DPMS_ON) 104 REG_WRITE(hdmi_priv->hdmi_reg, hdmib & ~HDMIB_PORT_EN); 105 else 106 REG_WRITE(hdmi_priv->hdmi_reg, hdmib | HDMIB_PORT_EN); 107 REG_READ(hdmi_priv->hdmi_reg); 108 } 109 110 static void cdv_hdmi_save(struct drm_connector *connector) 111 { 112 struct drm_device *dev = connector->dev; 113 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 114 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 115 116 hdmi_priv->save_HDMIB = REG_READ(hdmi_priv->hdmi_reg); 117 } 118 119 static void cdv_hdmi_restore(struct drm_connector *connector) 120 { 121 struct drm_device *dev = connector->dev; 122 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 123 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 124 125 REG_WRITE(hdmi_priv->hdmi_reg, hdmi_priv->save_HDMIB); 126 REG_READ(hdmi_priv->hdmi_reg); 127 } 128 129 static enum drm_connector_status cdv_hdmi_detect( 130 struct drm_connector *connector, bool force) 131 { 132 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 133 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 134 struct edid *edid = NULL; 135 enum drm_connector_status status = connector_status_disconnected; 136 137 edid = drm_get_edid(connector, &gma_encoder->i2c_bus->adapter); 138 139 hdmi_priv->has_hdmi_sink = false; 140 hdmi_priv->has_hdmi_audio = false; 141 if (edid) { 142 if (edid->input & DRM_EDID_INPUT_DIGITAL) { 143 status = connector_status_connected; 144 hdmi_priv->has_hdmi_sink = 145 drm_detect_hdmi_monitor(edid); 146 hdmi_priv->has_hdmi_audio = 147 drm_detect_monitor_audio(edid); 148 } 149 kfree(edid); 150 } 151 return status; 152 } 153 154 static int cdv_hdmi_set_property(struct drm_connector *connector, 155 struct drm_property *property, 156 uint64_t value) 157 { 158 struct drm_encoder *encoder = connector->encoder; 159 160 if (!strcmp(property->name, "scaling mode") && encoder) { 161 struct gma_crtc *crtc = to_gma_crtc(encoder->crtc); 162 bool centre; 163 uint64_t curValue; 164 165 if (!crtc) 166 return -1; 167 168 switch (value) { 169 case DRM_MODE_SCALE_FULLSCREEN: 170 break; 171 case DRM_MODE_SCALE_NO_SCALE: 172 break; 173 case DRM_MODE_SCALE_ASPECT: 174 break; 175 default: 176 return -1; 177 } 178 179 if (drm_object_property_get_value(&connector->base, 180 property, &curValue)) 181 return -1; 182 183 if (curValue == value) 184 return 0; 185 186 if (drm_object_property_set_value(&connector->base, 187 property, value)) 188 return -1; 189 190 centre = (curValue == DRM_MODE_SCALE_NO_SCALE) || 191 (value == DRM_MODE_SCALE_NO_SCALE); 192 193 if (crtc->saved_mode.hdisplay != 0 && 194 crtc->saved_mode.vdisplay != 0) { 195 if (centre) { 196 if (!drm_crtc_helper_set_mode(encoder->crtc, &crtc->saved_mode, 197 encoder->crtc->x, encoder->crtc->y, encoder->crtc->primary->fb)) 198 return -1; 199 } else { 200 const struct drm_encoder_helper_funcs *helpers 201 = encoder->helper_private; 202 helpers->mode_set(encoder, &crtc->saved_mode, 203 &crtc->saved_adjusted_mode); 204 } 205 } 206 } 207 return 0; 208 } 209 210 /* 211 * Return the list of HDMI DDC modes if available. 212 */ 213 static int cdv_hdmi_get_modes(struct drm_connector *connector) 214 { 215 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 216 struct edid *edid = NULL; 217 int ret = 0; 218 219 edid = drm_get_edid(connector, &gma_encoder->i2c_bus->adapter); 220 if (edid) { 221 drm_connector_update_edid_property(connector, edid); 222 ret = drm_add_edid_modes(connector, edid); 223 kfree(edid); 224 } 225 return ret; 226 } 227 228 static enum drm_mode_status cdv_hdmi_mode_valid(struct drm_connector *connector, 229 struct drm_display_mode *mode) 230 { 231 if (mode->clock > 165000) 232 return MODE_CLOCK_HIGH; 233 if (mode->clock < 20000) 234 return MODE_CLOCK_HIGH; 235 236 /* just in case */ 237 if (mode->flags & DRM_MODE_FLAG_DBLSCAN) 238 return MODE_NO_DBLESCAN; 239 240 /* just in case */ 241 if (mode->flags & DRM_MODE_FLAG_INTERLACE) 242 return MODE_NO_INTERLACE; 243 244 return MODE_OK; 245 } 246 247 static void cdv_hdmi_destroy(struct drm_connector *connector) 248 { 249 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 250 251 psb_intel_i2c_destroy(gma_encoder->i2c_bus); 252 drm_connector_unregister(connector); 253 drm_connector_cleanup(connector); 254 kfree(connector); 255 } 256 257 static const struct drm_encoder_helper_funcs cdv_hdmi_helper_funcs = { 258 .dpms = cdv_hdmi_dpms, 259 .prepare = gma_encoder_prepare, 260 .mode_set = cdv_hdmi_mode_set, 261 .commit = gma_encoder_commit, 262 }; 263 264 static const struct drm_connector_helper_funcs 265 cdv_hdmi_connector_helper_funcs = { 266 .get_modes = cdv_hdmi_get_modes, 267 .mode_valid = cdv_hdmi_mode_valid, 268 .best_encoder = gma_best_encoder, 269 }; 270 271 static const struct drm_connector_funcs cdv_hdmi_connector_funcs = { 272 .dpms = drm_helper_connector_dpms, 273 .detect = cdv_hdmi_detect, 274 .fill_modes = drm_helper_probe_single_connector_modes, 275 .set_property = cdv_hdmi_set_property, 276 .destroy = cdv_hdmi_destroy, 277 }; 278 279 void cdv_hdmi_init(struct drm_device *dev, 280 struct psb_intel_mode_device *mode_dev, int reg) 281 { 282 struct gma_encoder *gma_encoder; 283 struct gma_connector *gma_connector; 284 struct drm_connector *connector; 285 struct drm_encoder *encoder; 286 struct mid_intel_hdmi_priv *hdmi_priv; 287 int ddc_bus; 288 289 gma_encoder = kzalloc(sizeof(struct gma_encoder), GFP_KERNEL); 290 291 if (!gma_encoder) 292 return; 293 294 gma_connector = kzalloc(sizeof(struct gma_connector), 295 GFP_KERNEL); 296 297 if (!gma_connector) 298 goto err_connector; 299 300 hdmi_priv = kzalloc(sizeof(struct mid_intel_hdmi_priv), GFP_KERNEL); 301 302 if (!hdmi_priv) 303 goto err_priv; 304 305 connector = &gma_connector->base; 306 connector->polled = DRM_CONNECTOR_POLL_HPD; 307 gma_connector->save = cdv_hdmi_save; 308 gma_connector->restore = cdv_hdmi_restore; 309 310 encoder = &gma_encoder->base; 311 drm_connector_init(dev, connector, 312 &cdv_hdmi_connector_funcs, 313 DRM_MODE_CONNECTOR_DVID); 314 315 drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_TMDS); 316 317 gma_connector_attach_encoder(gma_connector, gma_encoder); 318 gma_encoder->type = INTEL_OUTPUT_HDMI; 319 hdmi_priv->hdmi_reg = reg; 320 hdmi_priv->has_hdmi_sink = false; 321 gma_encoder->dev_priv = hdmi_priv; 322 323 drm_encoder_helper_add(encoder, &cdv_hdmi_helper_funcs); 324 drm_connector_helper_add(connector, 325 &cdv_hdmi_connector_helper_funcs); 326 connector->display_info.subpixel_order = SubPixelHorizontalRGB; 327 connector->interlace_allowed = false; 328 connector->doublescan_allowed = false; 329 330 drm_object_attach_property(&connector->base, 331 dev->mode_config.scaling_mode_property, 332 DRM_MODE_SCALE_FULLSCREEN); 333 334 switch (reg) { 335 case SDVOB: 336 ddc_bus = GPIOE; 337 gma_encoder->ddi_select = DDI0_SELECT; 338 break; 339 case SDVOC: 340 ddc_bus = GPIOD; 341 gma_encoder->ddi_select = DDI1_SELECT; 342 break; 343 default: 344 DRM_ERROR("unknown reg 0x%x for HDMI\n", reg); 345 goto failed_ddc; 346 break; 347 } 348 349 gma_encoder->i2c_bus = psb_intel_i2c_create(dev, 350 ddc_bus, (reg == SDVOB) ? "HDMIB" : "HDMIC"); 351 352 if (!gma_encoder->i2c_bus) { 353 dev_err(dev->dev, "No ddc adapter available!\n"); 354 goto failed_ddc; 355 } 356 357 hdmi_priv->hdmi_i2c_adapter = &(gma_encoder->i2c_bus->adapter); 358 hdmi_priv->dev = dev; 359 drm_connector_register(connector); 360 return; 361 362 failed_ddc: 363 drm_encoder_cleanup(encoder); 364 drm_connector_cleanup(connector); 365 err_priv: 366 kfree(gma_connector); 367 err_connector: 368 kfree(gma_encoder); 369 } 370