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- /*
- * Copyright © 2006-2011 Intel Corporation
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Authors:
- * jim liu <jim.liu@intel.com>
- *
- * FIXME:
- * We should probably make this generic and share it with Medfield
- */
- #include <drm/drmP.h>
- #include <drm/drm.h>
- #include <drm/drm_crtc.h>
- #include <drm/drm_edid.h>
- #include "psb_intel_drv.h"
- #include "psb_drv.h"
- #include "psb_intel_reg.h"
- #include "cdv_device.h"
- #include <linux/pm_runtime.h>
- /* hdmi control bits */
- #define HDMI_NULL_PACKETS_DURING_VSYNC (1 << 9)
- #define HDMI_BORDER_ENABLE (1 << 7)
- #define HDMI_AUDIO_ENABLE (1 << 6)
- #define HDMI_VSYNC_ACTIVE_HIGH (1 << 4)
- #define HDMI_HSYNC_ACTIVE_HIGH (1 << 3)
- /* hdmi-b control bits */
- #define HDMIB_PIPE_B_SELECT (1 << 30)
- struct mid_intel_hdmi_priv {
- u32 hdmi_reg;
- u32 save_HDMIB;
- bool has_hdmi_sink;
- bool has_hdmi_audio;
- /* Should set this when detect hotplug */
- bool hdmi_device_connected;
- struct mdfld_hdmi_i2c *i2c_bus;
- struct i2c_adapter *hdmi_i2c_adapter; /* for control functions */
- struct drm_device *dev;
- };
- static void cdv_hdmi_mode_set(struct drm_encoder *encoder,
- struct drm_display_mode *mode,
- struct drm_display_mode *adjusted_mode)
- {
- struct drm_device *dev = encoder->dev;
- struct gma_encoder *gma_encoder = to_gma_encoder(encoder);
- struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
- u32 hdmib;
- struct drm_crtc *crtc = encoder->crtc;
- struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
- hdmib = (2 << 10);
- if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
- hdmib |= HDMI_VSYNC_ACTIVE_HIGH;
- if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
- hdmib |= HDMI_HSYNC_ACTIVE_HIGH;
- if (gma_crtc->pipe == 1)
- hdmib |= HDMIB_PIPE_B_SELECT;
- if (hdmi_priv->has_hdmi_audio) {
- hdmib |= HDMI_AUDIO_ENABLE;
- hdmib |= HDMI_NULL_PACKETS_DURING_VSYNC;
- }
- REG_WRITE(hdmi_priv->hdmi_reg, hdmib);
- REG_READ(hdmi_priv->hdmi_reg);
- }
- static void cdv_hdmi_dpms(struct drm_encoder *encoder, int mode)
- {
- struct drm_device *dev = encoder->dev;
- struct gma_encoder *gma_encoder = to_gma_encoder(encoder);
- struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
- u32 hdmib;
- hdmib = REG_READ(hdmi_priv->hdmi_reg);
- if (mode != DRM_MODE_DPMS_ON)
- REG_WRITE(hdmi_priv->hdmi_reg, hdmib & ~HDMIB_PORT_EN);
- else
- REG_WRITE(hdmi_priv->hdmi_reg, hdmib | HDMIB_PORT_EN);
- REG_READ(hdmi_priv->hdmi_reg);
- }
- static void cdv_hdmi_save(struct drm_connector *connector)
- {
- struct drm_device *dev = connector->dev;
- struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
- struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
- hdmi_priv->save_HDMIB = REG_READ(hdmi_priv->hdmi_reg);
- }
- static void cdv_hdmi_restore(struct drm_connector *connector)
- {
- struct drm_device *dev = connector->dev;
- struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
- struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
- REG_WRITE(hdmi_priv->hdmi_reg, hdmi_priv->save_HDMIB);
- REG_READ(hdmi_priv->hdmi_reg);
- }
- static enum drm_connector_status cdv_hdmi_detect(
- struct drm_connector *connector, bool force)
- {
- struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
- struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv;
- struct edid *edid = NULL;
- enum drm_connector_status status = connector_status_disconnected;
- edid = drm_get_edid(connector, &gma_encoder->i2c_bus->adapter);
- hdmi_priv->has_hdmi_sink = false;
- hdmi_priv->has_hdmi_audio = false;
- if (edid) {
- if (edid->input & DRM_EDID_INPUT_DIGITAL) {
- status = connector_status_connected;
- hdmi_priv->has_hdmi_sink =
- drm_detect_hdmi_monitor(edid);
- hdmi_priv->has_hdmi_audio =
- drm_detect_monitor_audio(edid);
- }
- kfree(edid);
- }
- return status;
- }
- static int cdv_hdmi_set_property(struct drm_connector *connector,
- struct drm_property *property,
- uint64_t value)
- {
- struct drm_encoder *encoder = connector->encoder;
- if (!strcmp(property->name, "scaling mode") && encoder) {
- struct gma_crtc *crtc = to_gma_crtc(encoder->crtc);
- bool centre;
- uint64_t curValue;
- if (!crtc)
- return -1;
- switch (value) {
- case DRM_MODE_SCALE_FULLSCREEN:
- break;
- case DRM_MODE_SCALE_NO_SCALE:
- break;
- case DRM_MODE_SCALE_ASPECT:
- break;
- default:
- return -1;
- }
- if (drm_object_property_get_value(&connector->base,
- property, &curValue))
- return -1;
- if (curValue == value)
- return 0;
- if (drm_object_property_set_value(&connector->base,
- property, value))
- return -1;
- centre = (curValue == DRM_MODE_SCALE_NO_SCALE) ||
- (value == DRM_MODE_SCALE_NO_SCALE);
- if (crtc->saved_mode.hdisplay != 0 &&
- crtc->saved_mode.vdisplay != 0) {
- if (centre) {
- if (!drm_crtc_helper_set_mode(encoder->crtc, &crtc->saved_mode,
- encoder->crtc->x, encoder->crtc->y, encoder->crtc->primary->fb))
- return -1;
- } else {
- const struct drm_encoder_helper_funcs *helpers
- = encoder->helper_private;
- helpers->mode_set(encoder, &crtc->saved_mode,
- &crtc->saved_adjusted_mode);
- }
- }
- }
- return 0;
- }
- /*
- * Return the list of HDMI DDC modes if available.
- */
- static int cdv_hdmi_get_modes(struct drm_connector *connector)
- {
- struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
- struct edid *edid = NULL;
- int ret = 0;
- edid = drm_get_edid(connector, &gma_encoder->i2c_bus->adapter);
- if (edid) {
- drm_mode_connector_update_edid_property(connector, edid);
- ret = drm_add_edid_modes(connector, edid);
- kfree(edid);
- }
- return ret;
- }
- static int cdv_hdmi_mode_valid(struct drm_connector *connector,
- struct drm_display_mode *mode)
- {
- if (mode->clock > 165000)
- return MODE_CLOCK_HIGH;
- if (mode->clock < 20000)
- return MODE_CLOCK_HIGH;
- /* just in case */
- if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
- return MODE_NO_DBLESCAN;
- /* just in case */
- if (mode->flags & DRM_MODE_FLAG_INTERLACE)
- return MODE_NO_INTERLACE;
- return MODE_OK;
- }
- static void cdv_hdmi_destroy(struct drm_connector *connector)
- {
- struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
- if (gma_encoder->i2c_bus)
- psb_intel_i2c_destroy(gma_encoder->i2c_bus);
- drm_connector_unregister(connector);
- drm_connector_cleanup(connector);
- kfree(connector);
- }
- static const struct drm_encoder_helper_funcs cdv_hdmi_helper_funcs = {
- .dpms = cdv_hdmi_dpms,
- .mode_fixup = gma_encoder_mode_fixup,
- .prepare = gma_encoder_prepare,
- .mode_set = cdv_hdmi_mode_set,
- .commit = gma_encoder_commit,
- };
- static const struct drm_connector_helper_funcs
- cdv_hdmi_connector_helper_funcs = {
- .get_modes = cdv_hdmi_get_modes,
- .mode_valid = cdv_hdmi_mode_valid,
- .best_encoder = gma_best_encoder,
- };
- static const struct drm_connector_funcs cdv_hdmi_connector_funcs = {
- .dpms = drm_helper_connector_dpms,
- .save = cdv_hdmi_save,
- .restore = cdv_hdmi_restore,
- .detect = cdv_hdmi_detect,
- .fill_modes = drm_helper_probe_single_connector_modes,
- .set_property = cdv_hdmi_set_property,
- .destroy = cdv_hdmi_destroy,
- };
- void cdv_hdmi_init(struct drm_device *dev,
- struct psb_intel_mode_device *mode_dev, int reg)
- {
- struct gma_encoder *gma_encoder;
- struct gma_connector *gma_connector;
- struct drm_connector *connector;
- struct drm_encoder *encoder;
- struct mid_intel_hdmi_priv *hdmi_priv;
- int ddc_bus;
- gma_encoder = kzalloc(sizeof(struct gma_encoder), GFP_KERNEL);
- if (!gma_encoder)
- return;
- gma_connector = kzalloc(sizeof(struct gma_connector),
- GFP_KERNEL);
- if (!gma_connector)
- goto err_connector;
- hdmi_priv = kzalloc(sizeof(struct mid_intel_hdmi_priv), GFP_KERNEL);
- if (!hdmi_priv)
- goto err_priv;
- connector = &gma_connector->base;
- connector->polled = DRM_CONNECTOR_POLL_HPD;
- encoder = &gma_encoder->base;
- drm_connector_init(dev, connector,
- &cdv_hdmi_connector_funcs,
- DRM_MODE_CONNECTOR_DVID);
- drm_encoder_init(dev, encoder, &psb_intel_lvds_enc_funcs,
- DRM_MODE_ENCODER_TMDS);
- gma_connector_attach_encoder(gma_connector, gma_encoder);
- gma_encoder->type = INTEL_OUTPUT_HDMI;
- hdmi_priv->hdmi_reg = reg;
- hdmi_priv->has_hdmi_sink = false;
- gma_encoder->dev_priv = hdmi_priv;
- drm_encoder_helper_add(encoder, &cdv_hdmi_helper_funcs);
- drm_connector_helper_add(connector,
- &cdv_hdmi_connector_helper_funcs);
- connector->display_info.subpixel_order = SubPixelHorizontalRGB;
- connector->interlace_allowed = false;
- connector->doublescan_allowed = false;
- drm_object_attach_property(&connector->base,
- dev->mode_config.scaling_mode_property,
- DRM_MODE_SCALE_FULLSCREEN);
- switch (reg) {
- case SDVOB:
- ddc_bus = GPIOE;
- gma_encoder->ddi_select = DDI0_SELECT;
- break;
- case SDVOC:
- ddc_bus = GPIOD;
- gma_encoder->ddi_select = DDI1_SELECT;
- break;
- default:
- DRM_ERROR("unknown reg 0x%x for HDMI\n", reg);
- goto failed_ddc;
- break;
- }
- gma_encoder->i2c_bus = psb_intel_i2c_create(dev,
- ddc_bus, (reg == SDVOB) ? "HDMIB" : "HDMIC");
- if (!gma_encoder->i2c_bus) {
- dev_err(dev->dev, "No ddc adapter available!\n");
- goto failed_ddc;
- }
- hdmi_priv->hdmi_i2c_adapter = &(gma_encoder->i2c_bus->adapter);
- hdmi_priv->dev = dev;
- drm_connector_register(connector);
- return;
- failed_ddc:
- drm_encoder_cleanup(encoder);
- drm_connector_cleanup(connector);
- err_priv:
- kfree(gma_connector);
- err_connector:
- kfree(gma_encoder);
- }
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