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 27 #include <linux/pm_runtime.h> 28 29 #include <drm/drm.h> 30 #include <drm/drm_crtc.h> 31 #include <drm/drm_edid.h> 32 #include <drm/drm_simple_kms_helper.h> 33 34 #include "cdv_device.h" 35 #include "psb_drv.h" 36 #include "psb_intel_drv.h" 37 #include "psb_intel_reg.h" 38 39 /* hdmi control bits */ 40 #define HDMI_NULL_PACKETS_DURING_VSYNC (1 << 9) 41 #define HDMI_BORDER_ENABLE (1 << 7) 42 #define HDMI_AUDIO_ENABLE (1 << 6) 43 #define HDMI_VSYNC_ACTIVE_HIGH (1 << 4) 44 #define HDMI_HSYNC_ACTIVE_HIGH (1 << 3) 45 /* hdmi-b control bits */ 46 #define HDMIB_PIPE_B_SELECT (1 << 30) 47 48 49 struct mid_intel_hdmi_priv { 50 u32 hdmi_reg; 51 u32 save_HDMIB; 52 bool has_hdmi_sink; 53 bool has_hdmi_audio; 54 /* Should set this when detect hotplug */ 55 bool hdmi_device_connected; 56 struct drm_device *dev; 57 }; 58 59 static void cdv_hdmi_mode_set(struct drm_encoder *encoder, 60 struct drm_display_mode *mode, 61 struct drm_display_mode *adjusted_mode) 62 { 63 struct drm_device *dev = encoder->dev; 64 struct gma_encoder *gma_encoder = to_gma_encoder(encoder); 65 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 66 u32 hdmib; 67 struct drm_crtc *crtc = encoder->crtc; 68 struct gma_crtc *gma_crtc = to_gma_crtc(crtc); 69 70 hdmib = (2 << 10); 71 72 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) 73 hdmib |= HDMI_VSYNC_ACTIVE_HIGH; 74 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) 75 hdmib |= HDMI_HSYNC_ACTIVE_HIGH; 76 77 if (gma_crtc->pipe == 1) 78 hdmib |= HDMIB_PIPE_B_SELECT; 79 80 if (hdmi_priv->has_hdmi_audio) { 81 hdmib |= HDMI_AUDIO_ENABLE; 82 hdmib |= HDMI_NULL_PACKETS_DURING_VSYNC; 83 } 84 85 REG_WRITE(hdmi_priv->hdmi_reg, hdmib); 86 REG_READ(hdmi_priv->hdmi_reg); 87 } 88 89 static void cdv_hdmi_dpms(struct drm_encoder *encoder, int mode) 90 { 91 struct drm_device *dev = encoder->dev; 92 struct gma_encoder *gma_encoder = to_gma_encoder(encoder); 93 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 94 u32 hdmib; 95 96 hdmib = REG_READ(hdmi_priv->hdmi_reg); 97 98 if (mode != DRM_MODE_DPMS_ON) 99 REG_WRITE(hdmi_priv->hdmi_reg, hdmib & ~HDMIB_PORT_EN); 100 else 101 REG_WRITE(hdmi_priv->hdmi_reg, hdmib | HDMIB_PORT_EN); 102 REG_READ(hdmi_priv->hdmi_reg); 103 } 104 105 static void cdv_hdmi_save(struct drm_connector *connector) 106 { 107 struct drm_device *dev = connector->dev; 108 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 109 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 110 111 hdmi_priv->save_HDMIB = REG_READ(hdmi_priv->hdmi_reg); 112 } 113 114 static void cdv_hdmi_restore(struct drm_connector *connector) 115 { 116 struct drm_device *dev = connector->dev; 117 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 118 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 119 120 REG_WRITE(hdmi_priv->hdmi_reg, hdmi_priv->save_HDMIB); 121 REG_READ(hdmi_priv->hdmi_reg); 122 } 123 124 static enum drm_connector_status cdv_hdmi_detect( 125 struct drm_connector *connector, bool force) 126 { 127 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 128 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 129 struct edid *edid = NULL; 130 enum drm_connector_status status = connector_status_disconnected; 131 132 edid = drm_get_edid(connector, connector->ddc); 133 134 hdmi_priv->has_hdmi_sink = false; 135 hdmi_priv->has_hdmi_audio = false; 136 if (edid) { 137 if (edid->input & DRM_EDID_INPUT_DIGITAL) { 138 status = connector_status_connected; 139 hdmi_priv->has_hdmi_sink = 140 drm_detect_hdmi_monitor(edid); 141 hdmi_priv->has_hdmi_audio = 142 drm_detect_monitor_audio(edid); 143 } 144 kfree(edid); 145 } 146 return status; 147 } 148 149 static int cdv_hdmi_set_property(struct drm_connector *connector, 150 struct drm_property *property, 151 uint64_t value) 152 { 153 struct drm_encoder *encoder = connector->encoder; 154 155 if (!strcmp(property->name, "scaling mode") && encoder) { 156 struct gma_crtc *crtc = to_gma_crtc(encoder->crtc); 157 bool centre; 158 uint64_t curValue; 159 160 if (!crtc) 161 return -1; 162 163 switch (value) { 164 case DRM_MODE_SCALE_FULLSCREEN: 165 break; 166 case DRM_MODE_SCALE_NO_SCALE: 167 break; 168 case DRM_MODE_SCALE_ASPECT: 169 break; 170 default: 171 return -1; 172 } 173 174 if (drm_object_property_get_value(&connector->base, 175 property, &curValue)) 176 return -1; 177 178 if (curValue == value) 179 return 0; 180 181 if (drm_object_property_set_value(&connector->base, 182 property, value)) 183 return -1; 184 185 centre = (curValue == DRM_MODE_SCALE_NO_SCALE) || 186 (value == DRM_MODE_SCALE_NO_SCALE); 187 188 if (crtc->saved_mode.hdisplay != 0 && 189 crtc->saved_mode.vdisplay != 0) { 190 if (centre) { 191 if (!drm_crtc_helper_set_mode(encoder->crtc, &crtc->saved_mode, 192 encoder->crtc->x, encoder->crtc->y, encoder->crtc->primary->fb)) 193 return -1; 194 } else { 195 const struct drm_encoder_helper_funcs *helpers 196 = encoder->helper_private; 197 helpers->mode_set(encoder, &crtc->saved_mode, 198 &crtc->saved_adjusted_mode); 199 } 200 } 201 } 202 return 0; 203 } 204 205 /* 206 * Return the list of HDMI DDC modes if available. 207 */ 208 static int cdv_hdmi_get_modes(struct drm_connector *connector) 209 { 210 struct edid *edid = NULL; 211 int ret = 0; 212 213 edid = drm_get_edid(connector, connector->ddc); 214 if (edid) { 215 drm_connector_update_edid_property(connector, edid); 216 ret = drm_add_edid_modes(connector, edid); 217 kfree(edid); 218 } 219 return ret; 220 } 221 222 static enum drm_mode_status cdv_hdmi_mode_valid(struct drm_connector *connector, 223 struct drm_display_mode *mode) 224 { 225 if (mode->clock > 165000) 226 return MODE_CLOCK_HIGH; 227 if (mode->clock < 20000) 228 return MODE_CLOCK_HIGH; 229 230 /* just in case */ 231 if (mode->flags & DRM_MODE_FLAG_DBLSCAN) 232 return MODE_NO_DBLESCAN; 233 234 /* just in case */ 235 if (mode->flags & DRM_MODE_FLAG_INTERLACE) 236 return MODE_NO_INTERLACE; 237 238 return MODE_OK; 239 } 240 241 static void cdv_hdmi_destroy(struct drm_connector *connector) 242 { 243 struct gma_connector *gma_connector = to_gma_connector(connector); 244 struct gma_i2c_chan *ddc_bus = to_gma_i2c_chan(connector->ddc); 245 246 gma_i2c_destroy(ddc_bus); 247 drm_connector_cleanup(connector); 248 kfree(gma_connector); 249 } 250 251 static const struct drm_encoder_helper_funcs cdv_hdmi_helper_funcs = { 252 .dpms = cdv_hdmi_dpms, 253 .prepare = gma_encoder_prepare, 254 .mode_set = cdv_hdmi_mode_set, 255 .commit = gma_encoder_commit, 256 }; 257 258 static const struct drm_connector_helper_funcs 259 cdv_hdmi_connector_helper_funcs = { 260 .get_modes = cdv_hdmi_get_modes, 261 .mode_valid = cdv_hdmi_mode_valid, 262 .best_encoder = gma_best_encoder, 263 }; 264 265 static const struct drm_connector_funcs cdv_hdmi_connector_funcs = { 266 .dpms = drm_helper_connector_dpms, 267 .detect = cdv_hdmi_detect, 268 .fill_modes = drm_helper_probe_single_connector_modes, 269 .set_property = cdv_hdmi_set_property, 270 .destroy = cdv_hdmi_destroy, 271 }; 272 273 void cdv_hdmi_init(struct drm_device *dev, 274 struct psb_intel_mode_device *mode_dev, int reg) 275 { 276 struct gma_encoder *gma_encoder; 277 struct gma_connector *gma_connector; 278 struct drm_connector *connector; 279 struct mid_intel_hdmi_priv *hdmi_priv; 280 struct gma_i2c_chan *ddc_bus; 281 int ddc_reg; 282 int ret; 283 284 gma_encoder = kzalloc(sizeof(struct gma_encoder), GFP_KERNEL); 285 if (!gma_encoder) 286 return; 287 288 gma_connector = kzalloc(sizeof(struct gma_connector), GFP_KERNEL); 289 if (!gma_connector) 290 goto err_free_encoder; 291 292 hdmi_priv = kzalloc(sizeof(struct mid_intel_hdmi_priv), GFP_KERNEL); 293 if (!hdmi_priv) 294 goto err_free_connector; 295 296 connector = &gma_connector->base; 297 connector->polled = DRM_CONNECTOR_POLL_HPD; 298 gma_connector->save = cdv_hdmi_save; 299 gma_connector->restore = cdv_hdmi_restore; 300 301 switch (reg) { 302 case SDVOB: 303 ddc_reg = GPIOE; 304 gma_encoder->ddi_select = DDI0_SELECT; 305 break; 306 case SDVOC: 307 ddc_reg = GPIOD; 308 gma_encoder->ddi_select = DDI1_SELECT; 309 break; 310 default: 311 DRM_ERROR("unknown reg 0x%x for HDMI\n", reg); 312 goto err_free_hdmi_priv; 313 } 314 315 ddc_bus = gma_i2c_create(dev, ddc_reg, 316 (reg == SDVOB) ? "HDMIB" : "HDMIC"); 317 if (!ddc_bus) { 318 dev_err(dev->dev, "No ddc adapter available!\n"); 319 goto err_free_hdmi_priv; 320 } 321 322 ret = drm_connector_init_with_ddc(dev, connector, 323 &cdv_hdmi_connector_funcs, 324 DRM_MODE_CONNECTOR_DVID, 325 &ddc_bus->base); 326 if (ret) 327 goto err_ddc_destroy; 328 329 ret = drm_simple_encoder_init(dev, &gma_encoder->base, 330 DRM_MODE_ENCODER_TMDS); 331 if (ret) 332 goto err_connector_cleanup; 333 334 gma_connector_attach_encoder(gma_connector, gma_encoder); 335 gma_encoder->type = INTEL_OUTPUT_HDMI; 336 hdmi_priv->hdmi_reg = reg; 337 hdmi_priv->has_hdmi_sink = false; 338 gma_encoder->dev_priv = hdmi_priv; 339 340 drm_encoder_helper_add(&gma_encoder->base, &cdv_hdmi_helper_funcs); 341 drm_connector_helper_add(connector, 342 &cdv_hdmi_connector_helper_funcs); 343 connector->display_info.subpixel_order = SubPixelHorizontalRGB; 344 connector->interlace_allowed = false; 345 connector->doublescan_allowed = false; 346 347 drm_object_attach_property(&connector->base, 348 dev->mode_config.scaling_mode_property, 349 DRM_MODE_SCALE_FULLSCREEN); 350 351 hdmi_priv->dev = dev; 352 return; 353 354 err_connector_cleanup: 355 drm_connector_cleanup(connector); 356 err_ddc_destroy: 357 gma_i2c_destroy(ddc_bus); 358 err_free_hdmi_priv: 359 kfree(hdmi_priv); 360 err_free_connector: 361 kfree(gma_connector); 362 err_free_encoder: 363 kfree(gma_encoder); 364 } 365