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