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 36 #include "cdv_device.h" 37 #include "psb_drv.h" 38 #include "psb_intel_drv.h" 39 #include "psb_intel_reg.h" 40 41 /* hdmi control bits */ 42 #define HDMI_NULL_PACKETS_DURING_VSYNC (1 << 9) 43 #define HDMI_BORDER_ENABLE (1 << 7) 44 #define HDMI_AUDIO_ENABLE (1 << 6) 45 #define HDMI_VSYNC_ACTIVE_HIGH (1 << 4) 46 #define HDMI_HSYNC_ACTIVE_HIGH (1 << 3) 47 /* hdmi-b control bits */ 48 #define HDMIB_PIPE_B_SELECT (1 << 30) 49 50 51 struct mid_intel_hdmi_priv { 52 u32 hdmi_reg; 53 u32 save_HDMIB; 54 bool has_hdmi_sink; 55 bool has_hdmi_audio; 56 /* Should set this when detect hotplug */ 57 bool hdmi_device_connected; 58 struct mdfld_hdmi_i2c *i2c_bus; 59 struct i2c_adapter *hdmi_i2c_adapter; /* for control functions */ 60 struct drm_device *dev; 61 }; 62 63 static void cdv_hdmi_mode_set(struct drm_encoder *encoder, 64 struct drm_display_mode *mode, 65 struct drm_display_mode *adjusted_mode) 66 { 67 struct drm_device *dev = encoder->dev; 68 struct gma_encoder *gma_encoder = to_gma_encoder(encoder); 69 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 70 u32 hdmib; 71 struct drm_crtc *crtc = encoder->crtc; 72 struct gma_crtc *gma_crtc = to_gma_crtc(crtc); 73 74 hdmib = (2 << 10); 75 76 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) 77 hdmib |= HDMI_VSYNC_ACTIVE_HIGH; 78 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) 79 hdmib |= HDMI_HSYNC_ACTIVE_HIGH; 80 81 if (gma_crtc->pipe == 1) 82 hdmib |= HDMIB_PIPE_B_SELECT; 83 84 if (hdmi_priv->has_hdmi_audio) { 85 hdmib |= HDMI_AUDIO_ENABLE; 86 hdmib |= HDMI_NULL_PACKETS_DURING_VSYNC; 87 } 88 89 REG_WRITE(hdmi_priv->hdmi_reg, hdmib); 90 REG_READ(hdmi_priv->hdmi_reg); 91 } 92 93 static void cdv_hdmi_dpms(struct drm_encoder *encoder, int mode) 94 { 95 struct drm_device *dev = encoder->dev; 96 struct gma_encoder *gma_encoder = to_gma_encoder(encoder); 97 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 98 u32 hdmib; 99 100 hdmib = REG_READ(hdmi_priv->hdmi_reg); 101 102 if (mode != DRM_MODE_DPMS_ON) 103 REG_WRITE(hdmi_priv->hdmi_reg, hdmib & ~HDMIB_PORT_EN); 104 else 105 REG_WRITE(hdmi_priv->hdmi_reg, hdmib | HDMIB_PORT_EN); 106 REG_READ(hdmi_priv->hdmi_reg); 107 } 108 109 static void cdv_hdmi_save(struct drm_connector *connector) 110 { 111 struct drm_device *dev = connector->dev; 112 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 113 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 114 115 hdmi_priv->save_HDMIB = REG_READ(hdmi_priv->hdmi_reg); 116 } 117 118 static void cdv_hdmi_restore(struct drm_connector *connector) 119 { 120 struct drm_device *dev = connector->dev; 121 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 122 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 123 124 REG_WRITE(hdmi_priv->hdmi_reg, hdmi_priv->save_HDMIB); 125 REG_READ(hdmi_priv->hdmi_reg); 126 } 127 128 static enum drm_connector_status cdv_hdmi_detect( 129 struct drm_connector *connector, bool force) 130 { 131 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 132 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 133 struct edid *edid = NULL; 134 enum drm_connector_status status = connector_status_disconnected; 135 136 edid = drm_get_edid(connector, &gma_encoder->i2c_bus->adapter); 137 138 hdmi_priv->has_hdmi_sink = false; 139 hdmi_priv->has_hdmi_audio = false; 140 if (edid) { 141 if (edid->input & DRM_EDID_INPUT_DIGITAL) { 142 status = connector_status_connected; 143 hdmi_priv->has_hdmi_sink = 144 drm_detect_hdmi_monitor(edid); 145 hdmi_priv->has_hdmi_audio = 146 drm_detect_monitor_audio(edid); 147 } 148 kfree(edid); 149 } 150 return status; 151 } 152 153 static int cdv_hdmi_set_property(struct drm_connector *connector, 154 struct drm_property *property, 155 uint64_t value) 156 { 157 struct drm_encoder *encoder = connector->encoder; 158 159 if (!strcmp(property->name, "scaling mode") && encoder) { 160 struct gma_crtc *crtc = to_gma_crtc(encoder->crtc); 161 bool centre; 162 uint64_t curValue; 163 164 if (!crtc) 165 return -1; 166 167 switch (value) { 168 case DRM_MODE_SCALE_FULLSCREEN: 169 break; 170 case DRM_MODE_SCALE_NO_SCALE: 171 break; 172 case DRM_MODE_SCALE_ASPECT: 173 break; 174 default: 175 return -1; 176 } 177 178 if (drm_object_property_get_value(&connector->base, 179 property, &curValue)) 180 return -1; 181 182 if (curValue == value) 183 return 0; 184 185 if (drm_object_property_set_value(&connector->base, 186 property, value)) 187 return -1; 188 189 centre = (curValue == DRM_MODE_SCALE_NO_SCALE) || 190 (value == DRM_MODE_SCALE_NO_SCALE); 191 192 if (crtc->saved_mode.hdisplay != 0 && 193 crtc->saved_mode.vdisplay != 0) { 194 if (centre) { 195 if (!drm_crtc_helper_set_mode(encoder->crtc, &crtc->saved_mode, 196 encoder->crtc->x, encoder->crtc->y, encoder->crtc->primary->fb)) 197 return -1; 198 } else { 199 const struct drm_encoder_helper_funcs *helpers 200 = encoder->helper_private; 201 helpers->mode_set(encoder, &crtc->saved_mode, 202 &crtc->saved_adjusted_mode); 203 } 204 } 205 } 206 return 0; 207 } 208 209 /* 210 * Return the list of HDMI DDC modes if available. 211 */ 212 static int cdv_hdmi_get_modes(struct drm_connector *connector) 213 { 214 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 215 struct edid *edid = NULL; 216 int ret = 0; 217 218 edid = drm_get_edid(connector, &gma_encoder->i2c_bus->adapter); 219 if (edid) { 220 drm_connector_update_edid_property(connector, edid); 221 ret = drm_add_edid_modes(connector, edid); 222 kfree(edid); 223 } 224 return ret; 225 } 226 227 static enum drm_mode_status cdv_hdmi_mode_valid(struct drm_connector *connector, 228 struct drm_display_mode *mode) 229 { 230 if (mode->clock > 165000) 231 return MODE_CLOCK_HIGH; 232 if (mode->clock < 20000) 233 return MODE_CLOCK_HIGH; 234 235 /* just in case */ 236 if (mode->flags & DRM_MODE_FLAG_DBLSCAN) 237 return MODE_NO_DBLESCAN; 238 239 /* just in case */ 240 if (mode->flags & DRM_MODE_FLAG_INTERLACE) 241 return MODE_NO_INTERLACE; 242 243 return MODE_OK; 244 } 245 246 static void cdv_hdmi_destroy(struct drm_connector *connector) 247 { 248 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 249 250 psb_intel_i2c_destroy(gma_encoder->i2c_bus); 251 drm_connector_unregister(connector); 252 drm_connector_cleanup(connector); 253 kfree(connector); 254 } 255 256 static const struct drm_encoder_helper_funcs cdv_hdmi_helper_funcs = { 257 .dpms = cdv_hdmi_dpms, 258 .prepare = gma_encoder_prepare, 259 .mode_set = cdv_hdmi_mode_set, 260 .commit = gma_encoder_commit, 261 }; 262 263 static const struct drm_connector_helper_funcs 264 cdv_hdmi_connector_helper_funcs = { 265 .get_modes = cdv_hdmi_get_modes, 266 .mode_valid = cdv_hdmi_mode_valid, 267 .best_encoder = gma_best_encoder, 268 }; 269 270 static const struct drm_connector_funcs cdv_hdmi_connector_funcs = { 271 .dpms = drm_helper_connector_dpms, 272 .detect = cdv_hdmi_detect, 273 .fill_modes = drm_helper_probe_single_connector_modes, 274 .set_property = cdv_hdmi_set_property, 275 .destroy = cdv_hdmi_destroy, 276 }; 277 278 void cdv_hdmi_init(struct drm_device *dev, 279 struct psb_intel_mode_device *mode_dev, int reg) 280 { 281 struct gma_encoder *gma_encoder; 282 struct gma_connector *gma_connector; 283 struct drm_connector *connector; 284 struct drm_encoder *encoder; 285 struct mid_intel_hdmi_priv *hdmi_priv; 286 int ddc_bus; 287 288 gma_encoder = kzalloc(sizeof(struct gma_encoder), GFP_KERNEL); 289 290 if (!gma_encoder) 291 return; 292 293 gma_connector = kzalloc(sizeof(struct gma_connector), 294 GFP_KERNEL); 295 296 if (!gma_connector) 297 goto err_connector; 298 299 hdmi_priv = kzalloc(sizeof(struct mid_intel_hdmi_priv), GFP_KERNEL); 300 301 if (!hdmi_priv) 302 goto err_priv; 303 304 connector = &gma_connector->base; 305 connector->polled = DRM_CONNECTOR_POLL_HPD; 306 gma_connector->save = cdv_hdmi_save; 307 gma_connector->restore = cdv_hdmi_restore; 308 309 encoder = &gma_encoder->base; 310 drm_connector_init(dev, connector, 311 &cdv_hdmi_connector_funcs, 312 DRM_MODE_CONNECTOR_DVID); 313 314 drm_encoder_init(dev, encoder, &psb_intel_lvds_enc_funcs, 315 DRM_MODE_ENCODER_TMDS, NULL); 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