| /* |
| * Copyright © 2006-2007 Intel Corporation |
| * Copyright (c) 2006 Dave Airlie <airlied@linux.ie> |
| * |
| * 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: |
| * Eric Anholt <eric@anholt.net> |
| * Dave Airlie <airlied@linux.ie> |
| * Jesse Barnes <jesse.barnes@intel.com> |
| */ |
| |
| #include <linux/dmi.h> |
| #include <linux/i2c.h> |
| #include "drmP.h" |
| #include "drm.h" |
| #include "drm_crtc.h" |
| #include "drm_edid.h" |
| #include "intel_drv.h" |
| #include "i915_drm.h" |
| #include "i915_drv.h" |
| |
| #define I915_LVDS "i915_lvds" |
| |
| /** |
| * Sets the backlight level. |
| * |
| * \param level backlight level, from 0 to intel_lvds_get_max_backlight(). |
| */ |
| static void intel_lvds_set_backlight(struct drm_device *dev, int level) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| u32 blc_pwm_ctl, reg; |
| |
| if (IS_IGDNG(dev)) |
| reg = BLC_PWM_CPU_CTL; |
| else |
| reg = BLC_PWM_CTL; |
| |
| blc_pwm_ctl = I915_READ(reg) & ~BACKLIGHT_DUTY_CYCLE_MASK; |
| I915_WRITE(reg, (blc_pwm_ctl | |
| (level << BACKLIGHT_DUTY_CYCLE_SHIFT))); |
| } |
| |
| /** |
| * Returns the maximum level of the backlight duty cycle field. |
| */ |
| static u32 intel_lvds_get_max_backlight(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| u32 reg; |
| |
| if (IS_IGDNG(dev)) |
| reg = BLC_PWM_PCH_CTL2; |
| else |
| reg = BLC_PWM_CTL; |
| |
| return ((I915_READ(reg) & BACKLIGHT_MODULATION_FREQ_MASK) >> |
| BACKLIGHT_MODULATION_FREQ_SHIFT) * 2; |
| } |
| |
| /** |
| * Sets the power state for the panel. |
| */ |
| static void intel_lvds_set_power(struct drm_device *dev, bool on) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| u32 pp_status, ctl_reg, status_reg; |
| |
| if (IS_IGDNG(dev)) { |
| ctl_reg = PCH_PP_CONTROL; |
| status_reg = PCH_PP_STATUS; |
| } else { |
| ctl_reg = PP_CONTROL; |
| status_reg = PP_STATUS; |
| } |
| |
| if (on) { |
| I915_WRITE(ctl_reg, I915_READ(ctl_reg) | |
| POWER_TARGET_ON); |
| do { |
| pp_status = I915_READ(status_reg); |
| } while ((pp_status & PP_ON) == 0); |
| |
| intel_lvds_set_backlight(dev, dev_priv->backlight_duty_cycle); |
| } else { |
| intel_lvds_set_backlight(dev, 0); |
| |
| I915_WRITE(ctl_reg, I915_READ(ctl_reg) & |
| ~POWER_TARGET_ON); |
| do { |
| pp_status = I915_READ(status_reg); |
| } while (pp_status & PP_ON); |
| } |
| } |
| |
| static void intel_lvds_dpms(struct drm_encoder *encoder, int mode) |
| { |
| struct drm_device *dev = encoder->dev; |
| |
| if (mode == DRM_MODE_DPMS_ON) |
| intel_lvds_set_power(dev, true); |
| else |
| intel_lvds_set_power(dev, false); |
| |
| /* XXX: We never power down the LVDS pairs. */ |
| } |
| |
| static void intel_lvds_save(struct drm_connector *connector) |
| { |
| struct drm_device *dev = connector->dev; |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| u32 pp_on_reg, pp_off_reg, pp_ctl_reg, pp_div_reg; |
| u32 pwm_ctl_reg; |
| |
| if (IS_IGDNG(dev)) { |
| pp_on_reg = PCH_PP_ON_DELAYS; |
| pp_off_reg = PCH_PP_OFF_DELAYS; |
| pp_ctl_reg = PCH_PP_CONTROL; |
| pp_div_reg = PCH_PP_DIVISOR; |
| pwm_ctl_reg = BLC_PWM_CPU_CTL; |
| } else { |
| pp_on_reg = PP_ON_DELAYS; |
| pp_off_reg = PP_OFF_DELAYS; |
| pp_ctl_reg = PP_CONTROL; |
| pp_div_reg = PP_DIVISOR; |
| pwm_ctl_reg = BLC_PWM_CTL; |
| } |
| |
| dev_priv->savePP_ON = I915_READ(pp_on_reg); |
| dev_priv->savePP_OFF = I915_READ(pp_off_reg); |
| dev_priv->savePP_CONTROL = I915_READ(pp_ctl_reg); |
| dev_priv->savePP_DIVISOR = I915_READ(pp_div_reg); |
| dev_priv->saveBLC_PWM_CTL = I915_READ(pwm_ctl_reg); |
| dev_priv->backlight_duty_cycle = (dev_priv->saveBLC_PWM_CTL & |
| BACKLIGHT_DUTY_CYCLE_MASK); |
| |
| /* |
| * If the light is off at server startup, just make it full brightness |
| */ |
| if (dev_priv->backlight_duty_cycle == 0) |
| dev_priv->backlight_duty_cycle = |
| intel_lvds_get_max_backlight(dev); |
| } |
| |
| static void intel_lvds_restore(struct drm_connector *connector) |
| { |
| struct drm_device *dev = connector->dev; |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| u32 pp_on_reg, pp_off_reg, pp_ctl_reg, pp_div_reg; |
| u32 pwm_ctl_reg; |
| |
| if (IS_IGDNG(dev)) { |
| pp_on_reg = PCH_PP_ON_DELAYS; |
| pp_off_reg = PCH_PP_OFF_DELAYS; |
| pp_ctl_reg = PCH_PP_CONTROL; |
| pp_div_reg = PCH_PP_DIVISOR; |
| pwm_ctl_reg = BLC_PWM_CPU_CTL; |
| } else { |
| pp_on_reg = PP_ON_DELAYS; |
| pp_off_reg = PP_OFF_DELAYS; |
| pp_ctl_reg = PP_CONTROL; |
| pp_div_reg = PP_DIVISOR; |
| pwm_ctl_reg = BLC_PWM_CTL; |
| } |
| |
| I915_WRITE(pwm_ctl_reg, dev_priv->saveBLC_PWM_CTL); |
| I915_WRITE(pp_on_reg, dev_priv->savePP_ON); |
| I915_WRITE(pp_off_reg, dev_priv->savePP_OFF); |
| I915_WRITE(pp_div_reg, dev_priv->savePP_DIVISOR); |
| I915_WRITE(pp_ctl_reg, dev_priv->savePP_CONTROL); |
| if (dev_priv->savePP_CONTROL & POWER_TARGET_ON) |
| intel_lvds_set_power(dev, true); |
| else |
| intel_lvds_set_power(dev, false); |
| } |
| |
| static int intel_lvds_mode_valid(struct drm_connector *connector, |
| struct drm_display_mode *mode) |
| { |
| struct drm_device *dev = connector->dev; |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct drm_display_mode *fixed_mode = dev_priv->panel_fixed_mode; |
| |
| if (fixed_mode) { |
| if (mode->hdisplay > fixed_mode->hdisplay) |
| return MODE_PANEL; |
| if (mode->vdisplay > fixed_mode->vdisplay) |
| return MODE_PANEL; |
| } |
| |
| return MODE_OK; |
| } |
| |
| static bool intel_lvds_mode_fixup(struct drm_encoder *encoder, |
| struct drm_display_mode *mode, |
| struct drm_display_mode *adjusted_mode) |
| { |
| struct drm_device *dev = encoder->dev; |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc); |
| struct drm_encoder *tmp_encoder; |
| |
| /* Should never happen!! */ |
| if (!IS_I965G(dev) && intel_crtc->pipe == 0) { |
| printk(KERN_ERR "Can't support LVDS on pipe A\n"); |
| return false; |
| } |
| |
| /* Should never happen!! */ |
| list_for_each_entry(tmp_encoder, &dev->mode_config.encoder_list, head) { |
| if (tmp_encoder != encoder && tmp_encoder->crtc == encoder->crtc) { |
| printk(KERN_ERR "Can't enable LVDS and another " |
| "encoder on the same pipe\n"); |
| return false; |
| } |
| } |
| |
| /* |
| * If we have timings from the BIOS for the panel, put them in |
| * to the adjusted mode. The CRTC will be set up for this mode, |
| * with the panel scaling set up to source from the H/VDisplay |
| * of the original mode. |
| */ |
| if (dev_priv->panel_fixed_mode != NULL) { |
| adjusted_mode->hdisplay = dev_priv->panel_fixed_mode->hdisplay; |
| adjusted_mode->hsync_start = |
| dev_priv->panel_fixed_mode->hsync_start; |
| adjusted_mode->hsync_end = |
| dev_priv->panel_fixed_mode->hsync_end; |
| adjusted_mode->htotal = dev_priv->panel_fixed_mode->htotal; |
| adjusted_mode->vdisplay = dev_priv->panel_fixed_mode->vdisplay; |
| adjusted_mode->vsync_start = |
| dev_priv->panel_fixed_mode->vsync_start; |
| adjusted_mode->vsync_end = |
| dev_priv->panel_fixed_mode->vsync_end; |
| adjusted_mode->vtotal = dev_priv->panel_fixed_mode->vtotal; |
| adjusted_mode->clock = dev_priv->panel_fixed_mode->clock; |
| drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V); |
| } |
| |
| /* |
| * XXX: It would be nice to support lower refresh rates on the |
| * panels to reduce power consumption, and perhaps match the |
| * user's requested refresh rate. |
| */ |
| |
| return true; |
| } |
| |
| static void intel_lvds_prepare(struct drm_encoder *encoder) |
| { |
| struct drm_device *dev = encoder->dev; |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| u32 reg; |
| |
| if (IS_IGDNG(dev)) |
| reg = BLC_PWM_CPU_CTL; |
| else |
| reg = BLC_PWM_CTL; |
| |
| dev_priv->saveBLC_PWM_CTL = I915_READ(reg); |
| dev_priv->backlight_duty_cycle = (dev_priv->saveBLC_PWM_CTL & |
| BACKLIGHT_DUTY_CYCLE_MASK); |
| |
| intel_lvds_set_power(dev, false); |
| } |
| |
| static void intel_lvds_commit( struct drm_encoder *encoder) |
| { |
| struct drm_device *dev = encoder->dev; |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| |
| if (dev_priv->backlight_duty_cycle == 0) |
| dev_priv->backlight_duty_cycle = |
| intel_lvds_get_max_backlight(dev); |
| |
| intel_lvds_set_power(dev, true); |
| } |
| |
| static void intel_lvds_mode_set(struct drm_encoder *encoder, |
| struct drm_display_mode *mode, |
| struct drm_display_mode *adjusted_mode) |
| { |
| struct drm_device *dev = encoder->dev; |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc); |
| u32 pfit_control; |
| |
| /* |
| * The LVDS pin pair will already have been turned on in the |
| * intel_crtc_mode_set since it has a large impact on the DPLL |
| * settings. |
| */ |
| |
| /* No panel fitting yet, fixme */ |
| if (IS_IGDNG(dev)) |
| return; |
| |
| /* |
| * Enable automatic panel scaling so that non-native modes fill the |
| * screen. Should be enabled before the pipe is enabled, according to |
| * register description and PRM. |
| */ |
| if (mode->hdisplay != adjusted_mode->hdisplay || |
| mode->vdisplay != adjusted_mode->vdisplay) |
| pfit_control = (PFIT_ENABLE | VERT_AUTO_SCALE | |
| HORIZ_AUTO_SCALE | VERT_INTERP_BILINEAR | |
| HORIZ_INTERP_BILINEAR); |
| else |
| pfit_control = 0; |
| |
| if (!IS_I965G(dev)) { |
| if (dev_priv->panel_wants_dither || dev_priv->lvds_dither) |
| pfit_control |= PANEL_8TO6_DITHER_ENABLE; |
| } |
| else |
| pfit_control |= intel_crtc->pipe << PFIT_PIPE_SHIFT; |
| |
| I915_WRITE(PFIT_CONTROL, pfit_control); |
| } |
| |
| /** |
| * Detect the LVDS connection. |
| * |
| * This always returns CONNECTOR_STATUS_CONNECTED. This connector should only have |
| * been set up if the LVDS was actually connected anyway. |
| */ |
| static enum drm_connector_status intel_lvds_detect(struct drm_connector *connector) |
| { |
| return connector_status_connected; |
| } |
| |
| /** |
| * Return the list of DDC modes if available, or the BIOS fixed mode otherwise. |
| */ |
| static int intel_lvds_get_modes(struct drm_connector *connector) |
| { |
| struct drm_device *dev = connector->dev; |
| struct intel_output *intel_output = to_intel_output(connector); |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| int ret = 0; |
| |
| ret = intel_ddc_get_modes(intel_output); |
| |
| if (ret) |
| return ret; |
| |
| /* Didn't get an EDID, so |
| * Set wide sync ranges so we get all modes |
| * handed to valid_mode for checking |
| */ |
| connector->display_info.min_vfreq = 0; |
| connector->display_info.max_vfreq = 200; |
| connector->display_info.min_hfreq = 0; |
| connector->display_info.max_hfreq = 200; |
| |
| if (dev_priv->panel_fixed_mode != NULL) { |
| struct drm_display_mode *mode; |
| |
| mode = drm_mode_duplicate(dev, dev_priv->panel_fixed_mode); |
| drm_mode_probed_add(connector, mode); |
| |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * intel_lvds_destroy - unregister and free LVDS structures |
| * @connector: connector to free |
| * |
| * Unregister the DDC bus for this connector then free the driver private |
| * structure. |
| */ |
| static void intel_lvds_destroy(struct drm_connector *connector) |
| { |
| struct intel_output *intel_output = to_intel_output(connector); |
| |
| if (intel_output->ddc_bus) |
| intel_i2c_destroy(intel_output->ddc_bus); |
| drm_sysfs_connector_remove(connector); |
| drm_connector_cleanup(connector); |
| kfree(connector); |
| } |
| |
| static int intel_lvds_set_property(struct drm_connector *connector, |
| struct drm_property *property, |
| uint64_t value) |
| { |
| return 0; |
| } |
| |
| static const struct drm_encoder_helper_funcs intel_lvds_helper_funcs = { |
| .dpms = intel_lvds_dpms, |
| .mode_fixup = intel_lvds_mode_fixup, |
| .prepare = intel_lvds_prepare, |
| .mode_set = intel_lvds_mode_set, |
| .commit = intel_lvds_commit, |
| }; |
| |
| static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs = { |
| .get_modes = intel_lvds_get_modes, |
| .mode_valid = intel_lvds_mode_valid, |
| .best_encoder = intel_best_encoder, |
| }; |
| |
| static const struct drm_connector_funcs intel_lvds_connector_funcs = { |
| .dpms = drm_helper_connector_dpms, |
| .save = intel_lvds_save, |
| .restore = intel_lvds_restore, |
| .detect = intel_lvds_detect, |
| .fill_modes = drm_helper_probe_single_connector_modes, |
| .set_property = intel_lvds_set_property, |
| .destroy = intel_lvds_destroy, |
| }; |
| |
| |
| static void intel_lvds_enc_destroy(struct drm_encoder *encoder) |
| { |
| drm_encoder_cleanup(encoder); |
| } |
| |
| static const struct drm_encoder_funcs intel_lvds_enc_funcs = { |
| .destroy = intel_lvds_enc_destroy, |
| }; |
| |
| static int __init intel_no_lvds_dmi_callback(const struct dmi_system_id *id) |
| { |
| DRM_DEBUG_KMS(I915_LVDS, |
| "Skipping LVDS initialization for %s\n", id->ident); |
| return 1; |
| } |
| |
| /* These systems claim to have LVDS, but really don't */ |
| static const struct dmi_system_id intel_no_lvds[] = { |
| { |
| .callback = intel_no_lvds_dmi_callback, |
| .ident = "Apple Mac Mini (Core series)", |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "Macmini1,1"), |
| }, |
| }, |
| { |
| .callback = intel_no_lvds_dmi_callback, |
| .ident = "Apple Mac Mini (Core 2 series)", |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "Macmini2,1"), |
| }, |
| }, |
| { |
| .callback = intel_no_lvds_dmi_callback, |
| .ident = "MSI IM-945GSE-A", |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "MSI"), |
| DMI_MATCH(DMI_PRODUCT_NAME, "A9830IMS"), |
| }, |
| }, |
| { |
| .callback = intel_no_lvds_dmi_callback, |
| .ident = "Dell Studio Hybrid", |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), |
| DMI_MATCH(DMI_PRODUCT_NAME, "Studio Hybrid 140g"), |
| }, |
| }, |
| { |
| .callback = intel_no_lvds_dmi_callback, |
| .ident = "AOpen Mini PC", |
| .matches = { |
| DMI_MATCH(DMI_SYS_VENDOR, "AOpen"), |
| DMI_MATCH(DMI_PRODUCT_NAME, "i965GMx-IF"), |
| }, |
| }, |
| { |
| .callback = intel_no_lvds_dmi_callback, |
| .ident = "Aopen i945GTt-VFA", |
| .matches = { |
| DMI_MATCH(DMI_PRODUCT_VERSION, "AO00001JW"), |
| }, |
| }, |
| |
| { } /* terminating entry */ |
| }; |
| |
| /** |
| * intel_lvds_init - setup LVDS connectors on this device |
| * @dev: drm device |
| * |
| * Create the connector, register the LVDS DDC bus, and try to figure out what |
| * modes we can display on the LVDS panel (if present). |
| */ |
| void intel_lvds_init(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct intel_output *intel_output; |
| struct drm_connector *connector; |
| struct drm_encoder *encoder; |
| struct drm_display_mode *scan; /* *modes, *bios_mode; */ |
| struct drm_crtc *crtc; |
| u32 lvds; |
| int pipe, gpio = GPIOC; |
| |
| /* Skip init on machines we know falsely report LVDS */ |
| if (dmi_check_system(intel_no_lvds)) |
| return; |
| |
| if (IS_IGDNG(dev)) { |
| if ((I915_READ(PCH_LVDS) & LVDS_DETECTED) == 0) |
| return; |
| gpio = PCH_GPIOC; |
| } |
| |
| intel_output = kzalloc(sizeof(struct intel_output), GFP_KERNEL); |
| if (!intel_output) { |
| return; |
| } |
| |
| connector = &intel_output->base; |
| encoder = &intel_output->enc; |
| drm_connector_init(dev, &intel_output->base, &intel_lvds_connector_funcs, |
| DRM_MODE_CONNECTOR_LVDS); |
| |
| drm_encoder_init(dev, &intel_output->enc, &intel_lvds_enc_funcs, |
| DRM_MODE_ENCODER_LVDS); |
| |
| drm_mode_connector_attach_encoder(&intel_output->base, &intel_output->enc); |
| intel_output->type = INTEL_OUTPUT_LVDS; |
| |
| drm_encoder_helper_add(encoder, &intel_lvds_helper_funcs); |
| drm_connector_helper_add(connector, &intel_lvds_connector_helper_funcs); |
| connector->display_info.subpixel_order = SubPixelHorizontalRGB; |
| connector->interlace_allowed = false; |
| connector->doublescan_allowed = false; |
| |
| |
| /* |
| * LVDS discovery: |
| * 1) check for EDID on DDC |
| * 2) check for VBT data |
| * 3) check to see if LVDS is already on |
| * if none of the above, no panel |
| * 4) make sure lid is open |
| * if closed, act like it's not there for now |
| */ |
| |
| /* Set up the DDC bus. */ |
| intel_output->ddc_bus = intel_i2c_create(dev, gpio, "LVDSDDC_C"); |
| if (!intel_output->ddc_bus) { |
| dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration " |
| "failed.\n"); |
| goto failed; |
| } |
| |
| /* |
| * Attempt to get the fixed panel mode from DDC. Assume that the |
| * preferred mode is the right one. |
| */ |
| intel_ddc_get_modes(intel_output); |
| |
| list_for_each_entry(scan, &connector->probed_modes, head) { |
| mutex_lock(&dev->mode_config.mutex); |
| if (scan->type & DRM_MODE_TYPE_PREFERRED) { |
| dev_priv->panel_fixed_mode = |
| drm_mode_duplicate(dev, scan); |
| mutex_unlock(&dev->mode_config.mutex); |
| goto out; |
| } |
| mutex_unlock(&dev->mode_config.mutex); |
| } |
| |
| /* Failed to get EDID, what about VBT? */ |
| if (dev_priv->lfp_lvds_vbt_mode) { |
| mutex_lock(&dev->mode_config.mutex); |
| dev_priv->panel_fixed_mode = |
| drm_mode_duplicate(dev, dev_priv->lfp_lvds_vbt_mode); |
| mutex_unlock(&dev->mode_config.mutex); |
| if (dev_priv->panel_fixed_mode) { |
| dev_priv->panel_fixed_mode->type |= |
| DRM_MODE_TYPE_PREFERRED; |
| goto out; |
| } |
| } |
| |
| /* |
| * If we didn't get EDID, try checking if the panel is already turned |
| * on. If so, assume that whatever is currently programmed is the |
| * correct mode. |
| */ |
| |
| /* IGDNG: FIXME if still fail, not try pipe mode now */ |
| if (IS_IGDNG(dev)) |
| goto failed; |
| |
| lvds = I915_READ(LVDS); |
| pipe = (lvds & LVDS_PIPEB_SELECT) ? 1 : 0; |
| crtc = intel_get_crtc_from_pipe(dev, pipe); |
| |
| if (crtc && (lvds & LVDS_PORT_EN)) { |
| dev_priv->panel_fixed_mode = intel_crtc_mode_get(dev, crtc); |
| if (dev_priv->panel_fixed_mode) { |
| dev_priv->panel_fixed_mode->type |= |
| DRM_MODE_TYPE_PREFERRED; |
| goto out; |
| } |
| } |
| |
| /* If we still don't have a mode after all that, give up. */ |
| if (!dev_priv->panel_fixed_mode) |
| goto failed; |
| |
| out: |
| if (IS_IGDNG(dev)) { |
| u32 pwm; |
| /* make sure PWM is enabled */ |
| pwm = I915_READ(BLC_PWM_CPU_CTL2); |
| pwm |= (PWM_ENABLE | PWM_PIPE_B); |
| I915_WRITE(BLC_PWM_CPU_CTL2, pwm); |
| |
| pwm = I915_READ(BLC_PWM_PCH_CTL1); |
| pwm |= PWM_PCH_ENABLE; |
| I915_WRITE(BLC_PWM_PCH_CTL1, pwm); |
| } |
| drm_sysfs_connector_add(connector); |
| return; |
| |
| failed: |
| DRM_DEBUG_KMS(I915_LVDS, "No LVDS modes found, disabling.\n"); |
| if (intel_output->ddc_bus) |
| intel_i2c_destroy(intel_output->ddc_bus); |
| drm_connector_cleanup(connector); |
| kfree(connector); |
| } |