diff options
Diffstat (limited to 'linux-core/intel_lvds.c')
| -rw-r--r-- | linux-core/intel_lvds.c | 515 |
1 files changed, 0 insertions, 515 deletions
diff --git a/linux-core/intel_lvds.c b/linux-core/intel_lvds.c deleted file mode 100644 index fa8209c7..00000000 --- a/linux-core/intel_lvds.c +++ /dev/null @@ -1,515 +0,0 @@ -/* - * 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/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" - -/** - * 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; - - blc_pwm_ctl = I915_READ(BLC_PWM_CTL) & ~BACKLIGHT_DUTY_CYCLE_MASK; - I915_WRITE(BLC_PWM_CTL, (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; - - return ((I915_READ(BLC_PWM_CTL) & 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; - - if (on) { - I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) | - POWER_TARGET_ON); - do { - pp_status = I915_READ(PP_STATUS); - } 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(PP_CONTROL, I915_READ(PP_CONTROL) & - ~POWER_TARGET_ON); - do { - pp_status = I915_READ(PP_STATUS); - } 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; - - dev_priv->savePP_ON = I915_READ(PP_ON_DELAYS); - dev_priv->savePP_OFF = I915_READ(PP_OFF_DELAYS); - dev_priv->savePP_CONTROL = I915_READ(PP_CONTROL); - dev_priv->savePP_DIVISOR = I915_READ(PP_DIVISOR); - dev_priv->saveBLC_PWM_CTL = I915_READ(BLC_PWM_CTL); - 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; - - I915_WRITE(BLC_PWM_CTL, dev_priv->saveBLC_PWM_CTL); - I915_WRITE(PP_ON_DELAYS, dev_priv->savePP_ON); - I915_WRITE(PP_OFF_DELAYS, dev_priv->savePP_OFF); - I915_WRITE(PP_DIVISOR, dev_priv->savePP_DIVISOR); - I915_WRITE(PP_CONTROL, 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; - - dev_priv->saveBLC_PWM_CTL = I915_READ(BLC_PWM_CTL); - 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. - */ - - /* - * 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) - 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 = - 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 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 = { - .save = intel_lvds_save, - .restore = intel_lvds_restore, - .detect = intel_lvds_detect, - .fill_modes = drm_helper_probe_single_connector_modes, - .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, -}; - - - -/** - * 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; - - 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, GPIOC, "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) { - if (scan->type & DRM_MODE_TYPE_PREFERRED) { - dev_priv->panel_fixed_mode = - drm_mode_duplicate(dev, scan); - goto out; /* FIXME: check for quirks */ - } - } - - /* Failed to get EDID, what about VBT? */ - if (dev_priv->vbt_mode) - dev_priv->panel_fixed_mode = - drm_mode_duplicate(dev, dev_priv->vbt_mode); - - /* - * 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. - */ - 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; /* FIXME: check for quirks */ - } - } - - /* If we still don't have a mode after all that, give up. */ - if (!dev_priv->panel_fixed_mode) - goto failed; - - /* FIXME: detect aopen & mac mini type stuff automatically? */ - /* - * Blacklist machines with BIOSes that list an LVDS panel without - * actually having one. - */ - if (IS_I945GM(dev)) { - /* aopen mini pc */ - if (dev->pdev->subsystem_vendor == 0xa0a0) - goto failed; - - if ((dev->pdev->subsystem_vendor == 0x8086) && - (dev->pdev->subsystem_device == 0x7270)) { - /* It's a Mac Mini or Macbook Pro. - * - * Apple hardware is out to get us. The macbook pro - * has a real LVDS panel, but the mac mini does not, - * and they have the same device IDs. We'll - * distinguish by panel size, on the assumption - * that Apple isn't about to make any machines with an - * 800x600 display. - */ - - if (dev_priv->panel_fixed_mode != NULL && - dev_priv->panel_fixed_mode->hdisplay == 800 && - dev_priv->panel_fixed_mode->vdisplay == 600) { - DRM_DEBUG("Suspected Mac Mini, ignoring the LVDS\n"); - goto failed; - } - } - } - - -out: - drm_sysfs_connector_add(connector); - return; - -failed: - DRM_DEBUG("No LVDS modes found, disabling.\n"); - if (intel_output->ddc_bus) - intel_i2c_destroy(intel_output->ddc_bus); - drm_connector_cleanup(connector); - kfree(connector); -} |