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