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1/*2 * Copyright © 2006-2011 Intel Corporation3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice (including the next12 * paragraph) shall be included in all copies or substantial portions of the13 * Software.14 *15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER21 * 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_crtc_helper.h>32#include <drm/drm_edid.h>33#include <drm/drm_modeset_helper_vtables.h>34#include <drm/drm_simple_kms_helper.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 51struct 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 drm_device *dev;59};60 61static void cdv_hdmi_mode_set(struct drm_encoder *encoder,62 struct drm_display_mode *mode,63 struct drm_display_mode *adjusted_mode)64{65 struct drm_device *dev = encoder->dev;66 struct gma_encoder *gma_encoder = to_gma_encoder(encoder);67 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;68 u32 hdmib;69 struct drm_crtc *crtc = encoder->crtc;70 struct gma_crtc *gma_crtc = to_gma_crtc(crtc);71 72 hdmib = (2 << 10);73 74 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)75 hdmib |= HDMI_VSYNC_ACTIVE_HIGH;76 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)77 hdmib |= HDMI_HSYNC_ACTIVE_HIGH;78 79 if (gma_crtc->pipe == 1)80 hdmib |= HDMIB_PIPE_B_SELECT;81 82 if (hdmi_priv->has_hdmi_audio) {83 hdmib |= HDMI_AUDIO_ENABLE;84 hdmib |= HDMI_NULL_PACKETS_DURING_VSYNC;85 }86 87 REG_WRITE(hdmi_priv->hdmi_reg, hdmib);88 REG_READ(hdmi_priv->hdmi_reg);89}90 91static void cdv_hdmi_dpms(struct drm_encoder *encoder, int mode)92{93 struct drm_device *dev = encoder->dev;94 struct gma_encoder *gma_encoder = to_gma_encoder(encoder);95 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;96 u32 hdmib;97 98 hdmib = REG_READ(hdmi_priv->hdmi_reg);99 100 if (mode != DRM_MODE_DPMS_ON)101 REG_WRITE(hdmi_priv->hdmi_reg, hdmib & ~HDMIB_PORT_EN);102 else103 REG_WRITE(hdmi_priv->hdmi_reg, hdmib | HDMIB_PORT_EN);104 REG_READ(hdmi_priv->hdmi_reg);105}106 107static void cdv_hdmi_save(struct drm_connector *connector)108{109 struct drm_device *dev = connector->dev;110 struct gma_encoder *gma_encoder = gma_attached_encoder(connector);111 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;112 113 hdmi_priv->save_HDMIB = REG_READ(hdmi_priv->hdmi_reg);114}115 116static void cdv_hdmi_restore(struct drm_connector *connector)117{118 struct drm_device *dev = connector->dev;119 struct gma_encoder *gma_encoder = gma_attached_encoder(connector);120 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;121 122 REG_WRITE(hdmi_priv->hdmi_reg, hdmi_priv->save_HDMIB);123 REG_READ(hdmi_priv->hdmi_reg);124}125 126static enum drm_connector_status cdv_hdmi_detect(127 struct drm_connector *connector, bool force)128{129 struct gma_encoder *gma_encoder = gma_attached_encoder(connector);130 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;131 struct edid *edid = NULL;132 enum drm_connector_status status = connector_status_disconnected;133 134 edid = drm_get_edid(connector, connector->ddc);135 136 hdmi_priv->has_hdmi_sink = false;137 hdmi_priv->has_hdmi_audio = false;138 if (edid) {139 if (edid->input & DRM_EDID_INPUT_DIGITAL) {140 status = connector_status_connected;141 hdmi_priv->has_hdmi_sink =142 drm_detect_hdmi_monitor(edid);143 hdmi_priv->has_hdmi_audio =144 drm_detect_monitor_audio(edid);145 }146 kfree(edid);147 }148 return status;149}150 151static int cdv_hdmi_set_property(struct drm_connector *connector,152 struct drm_property *property,153 uint64_t value)154{155 struct drm_encoder *encoder = connector->encoder;156 157 if (!strcmp(property->name, "scaling mode") && encoder) {158 struct gma_crtc *crtc = to_gma_crtc(encoder->crtc);159 bool centre;160 uint64_t curValue;161 162 if (!crtc)163 return -1;164 165 switch (value) {166 case DRM_MODE_SCALE_FULLSCREEN:167 break;168 case DRM_MODE_SCALE_NO_SCALE:169 break;170 case DRM_MODE_SCALE_ASPECT:171 break;172 default:173 return -1;174 }175 176 if (drm_object_property_get_value(&connector->base,177 property, &curValue))178 return -1;179 180 if (curValue == value)181 return 0;182 183 if (drm_object_property_set_value(&connector->base,184 property, value))185 return -1;186 187 centre = (curValue == DRM_MODE_SCALE_NO_SCALE) ||188 (value == DRM_MODE_SCALE_NO_SCALE);189 190 if (crtc->saved_mode.hdisplay != 0 &&191 crtc->saved_mode.vdisplay != 0) {192 if (centre) {193 if (!drm_crtc_helper_set_mode(encoder->crtc, &crtc->saved_mode,194 encoder->crtc->x, encoder->crtc->y, encoder->crtc->primary->fb))195 return -1;196 } else {197 const struct drm_encoder_helper_funcs *helpers198 = encoder->helper_private;199 helpers->mode_set(encoder, &crtc->saved_mode,200 &crtc->saved_adjusted_mode);201 }202 }203 }204 return 0;205}206 207/*208 * Return the list of HDMI DDC modes if available.209 */210static int cdv_hdmi_get_modes(struct drm_connector *connector)211{212 struct edid *edid = NULL;213 int ret = 0;214 215 edid = drm_get_edid(connector, connector->ddc);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 224static 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 243static void cdv_hdmi_destroy(struct drm_connector *connector)244{245 struct gma_connector *gma_connector = to_gma_connector(connector);246 struct gma_i2c_chan *ddc_bus = to_gma_i2c_chan(connector->ddc);247 248 gma_i2c_destroy(ddc_bus);249 drm_connector_cleanup(connector);250 kfree(gma_connector);251}252 253static 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 260static const struct drm_connector_helper_funcs261 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 267static 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 275void 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 mid_intel_hdmi_priv *hdmi_priv;282 struct gma_i2c_chan *ddc_bus;283 int ddc_reg;284 int ret;285 286 gma_encoder = kzalloc(sizeof(struct gma_encoder), GFP_KERNEL);287 if (!gma_encoder)288 return;289 290 gma_connector = kzalloc(sizeof(struct gma_connector), GFP_KERNEL);291 if (!gma_connector)292 goto err_free_encoder;293 294 hdmi_priv = kzalloc(sizeof(struct mid_intel_hdmi_priv), GFP_KERNEL);295 if (!hdmi_priv)296 goto err_free_connector;297 298 connector = &gma_connector->base;299 connector->polled = DRM_CONNECTOR_POLL_HPD;300 gma_connector->save = cdv_hdmi_save;301 gma_connector->restore = cdv_hdmi_restore;302 303 switch (reg) {304 case SDVOB:305 ddc_reg = GPIOE;306 gma_encoder->ddi_select = DDI0_SELECT;307 break;308 case SDVOC:309 ddc_reg = GPIOD;310 gma_encoder->ddi_select = DDI1_SELECT;311 break;312 default:313 DRM_ERROR("unknown reg 0x%x for HDMI\n", reg);314 goto err_free_hdmi_priv;315 }316 317 ddc_bus = gma_i2c_create(dev, ddc_reg,318 (reg == SDVOB) ? "HDMIB" : "HDMIC");319 if (!ddc_bus) {320 dev_err(dev->dev, "No ddc adapter available!\n");321 goto err_free_hdmi_priv;322 }323 324 ret = drm_connector_init_with_ddc(dev, connector,325 &cdv_hdmi_connector_funcs,326 DRM_MODE_CONNECTOR_DVID,327 &ddc_bus->base);328 if (ret)329 goto err_ddc_destroy;330 331 ret = drm_simple_encoder_init(dev, &gma_encoder->base,332 DRM_MODE_ENCODER_TMDS);333 if (ret)334 goto err_connector_cleanup;335 336 gma_connector_attach_encoder(gma_connector, gma_encoder);337 gma_encoder->type = INTEL_OUTPUT_HDMI;338 hdmi_priv->hdmi_reg = reg;339 hdmi_priv->has_hdmi_sink = false;340 gma_encoder->dev_priv = hdmi_priv;341 342 drm_encoder_helper_add(&gma_encoder->base, &cdv_hdmi_helper_funcs);343 drm_connector_helper_add(connector,344 &cdv_hdmi_connector_helper_funcs);345 connector->display_info.subpixel_order = SubPixelHorizontalRGB;346 connector->interlace_allowed = false;347 connector->doublescan_allowed = false;348 349 drm_object_attach_property(&connector->base,350 dev->mode_config.scaling_mode_property,351 DRM_MODE_SCALE_FULLSCREEN);352 353 hdmi_priv->dev = dev;354 return;355 356err_connector_cleanup:357 drm_connector_cleanup(connector);358err_ddc_destroy:359 gma_i2c_destroy(ddc_bus);360err_free_hdmi_priv:361 kfree(hdmi_priv);362err_free_connector:363 kfree(gma_connector);364err_free_encoder:365 kfree(gma_encoder);366}367