| /* |
| * 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 <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 psb_intel_output *output = enc_to_psb_intel_output(encoder); |
| struct mid_intel_hdmi_priv *hdmi_priv = output->dev_priv; |
| u32 hdmib; |
| struct drm_crtc *crtc = encoder->crtc; |
| struct psb_intel_crtc *intel_crtc = to_psb_intel_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 (intel_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 bool cdv_hdmi_mode_fixup(struct drm_encoder *encoder, |
| struct drm_display_mode *mode, |
| struct drm_display_mode *adjusted_mode) |
| { |
| return true; |
| } |
| |
| static void cdv_hdmi_dpms(struct drm_encoder *encoder, int mode) |
| { |
| struct drm_device *dev = encoder->dev; |
| struct psb_intel_output *output = enc_to_psb_intel_output(encoder); |
| struct mid_intel_hdmi_priv *hdmi_priv = output->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 psb_intel_output *output = to_psb_intel_output(connector); |
| struct mid_intel_hdmi_priv *hdmi_priv = output->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 psb_intel_output *output = to_psb_intel_output(connector); |
| struct mid_intel_hdmi_priv *hdmi_priv = output->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 drm_device *dev = connector->dev; |
| struct psb_intel_output *psb_intel_output = |
| to_psb_intel_output(connector); |
| struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_output->dev_priv; |
| struct edid *edid = NULL; |
| enum drm_connector_status status = connector_status_disconnected; |
| |
| edid = drm_get_edid(&psb_intel_output->base, |
| psb_intel_output->hdmi_i2c_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); |
| } |
| |
| psb_intel_output->base.display_info.raw_edid = NULL; |
| 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 psb_intel_crtc *crtc = to_psb_intel_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_connector_property_get_value(connector, |
| property, &curValue)) |
| return -1; |
| |
| if (curValue == value) |
| return 0; |
| |
| if (drm_connector_property_set_value(connector, |
| 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->fb)) |
| return -1; |
| } else { |
| 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 psb_intel_output *psb_intel_output = |
| to_psb_intel_output(connector); |
| struct edid *edid = NULL; |
| int ret = 0; |
| |
| edid = drm_get_edid(&psb_intel_output->base, |
| psb_intel_output->hdmi_i2c_adapter); |
| if (edid) { |
| drm_mode_connector_update_edid_property(&psb_intel_output-> |
| base, edid); |
| ret = drm_add_edid_modes(&psb_intel_output->base, 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; |
| |
| /* |
| * FIXME: for now we limit the size to 1680x1050 on CDV, otherwise it |
| * will go beyond the stolen memory size allocated to the framebuffer |
| */ |
| if (mode->hdisplay > 1680) |
| return MODE_PANEL; |
| if (mode->vdisplay > 1050) |
| return MODE_PANEL; |
| return MODE_OK; |
| } |
| |
| static void cdv_hdmi_destroy(struct drm_connector *connector) |
| { |
| struct psb_intel_output *psb_intel_output = |
| to_psb_intel_output(connector); |
| |
| if (psb_intel_output->ddc_bus) |
| psb_intel_i2c_destroy(psb_intel_output->ddc_bus); |
| drm_sysfs_connector_remove(connector); |
| drm_connector_cleanup(connector); |
| kfree(connector); |
| } |
| |
| static const struct drm_encoder_helper_funcs cdv_hdmi_helper_funcs = { |
| .dpms = cdv_hdmi_dpms, |
| .mode_fixup = cdv_hdmi_mode_fixup, |
| .prepare = psb_intel_encoder_prepare, |
| .mode_set = cdv_hdmi_mode_set, |
| .commit = psb_intel_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 = psb_intel_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 psb_intel_output *psb_intel_output; |
| struct drm_connector *connector; |
| struct drm_encoder *encoder; |
| struct mid_intel_hdmi_priv *hdmi_priv; |
| int ddc_bus; |
| |
| psb_intel_output = kzalloc(sizeof(struct psb_intel_output) + |
| sizeof(struct mid_intel_hdmi_priv), GFP_KERNEL); |
| if (!psb_intel_output) |
| return; |
| |
| hdmi_priv = (struct mid_intel_hdmi_priv *)(psb_intel_output + 1); |
| psb_intel_output->mode_dev = mode_dev; |
| connector = &psb_intel_output->base; |
| encoder = &psb_intel_output->enc; |
| drm_connector_init(dev, &psb_intel_output->base, |
| &cdv_hdmi_connector_funcs, |
| DRM_MODE_CONNECTOR_DVID); |
| |
| drm_encoder_init(dev, &psb_intel_output->enc, &psb_intel_lvds_enc_funcs, |
| DRM_MODE_ENCODER_TMDS); |
| |
| drm_mode_connector_attach_encoder(&psb_intel_output->base, |
| &psb_intel_output->enc); |
| psb_intel_output->type = INTEL_OUTPUT_HDMI; |
| hdmi_priv->hdmi_reg = reg; |
| hdmi_priv->has_hdmi_sink = false; |
| psb_intel_output->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_connector_attach_property(connector, |
| dev->mode_config.scaling_mode_property, DRM_MODE_SCALE_FULLSCREEN); |
| |
| switch (reg) { |
| case SDVOB: |
| ddc_bus = GPIOE; |
| break; |
| case SDVOC: |
| ddc_bus = GPIOD; |
| break; |
| default: |
| DRM_ERROR("unknown reg 0x%x for HDMI\n", reg); |
| goto failed_ddc; |
| break; |
| } |
| |
| psb_intel_output->ddc_bus = psb_intel_i2c_create(dev, |
| ddc_bus, (reg == SDVOB) ? "HDMIB" : "HDMIC"); |
| |
| if (!psb_intel_output->ddc_bus) { |
| dev_err(dev->dev, "No ddc adapter available!\n"); |
| goto failed_ddc; |
| } |
| psb_intel_output->hdmi_i2c_adapter = |
| &(psb_intel_output->ddc_bus->adapter); |
| hdmi_priv->dev = dev; |
| drm_sysfs_connector_add(connector); |
| return; |
| |
| failed_ddc: |
| drm_encoder_cleanup(&psb_intel_output->enc); |
| drm_connector_cleanup(&psb_intel_output->base); |
| kfree(psb_intel_output); |
| } |