diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_panel.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_panel.c | 726 |
1 files changed, 0 insertions, 726 deletions
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c deleted file mode 100644 index 80bea1d3209f..000000000000 --- a/drivers/gpu/drm/i915/intel_panel.c +++ /dev/null @@ -1,726 +0,0 @@ -/* - * Copyright © 2006-2010 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> - * Chris Wilson <chris@chris-wilson.co.uk> - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/moduleparam.h> -#include "intel_drv.h" - -#define PCI_LBPC 0xf4 /* legacy/combination backlight modes */ - -void -intel_fixed_panel_mode(struct drm_display_mode *fixed_mode, - struct drm_display_mode *adjusted_mode) -{ - adjusted_mode->hdisplay = fixed_mode->hdisplay; - adjusted_mode->hsync_start = fixed_mode->hsync_start; - adjusted_mode->hsync_end = fixed_mode->hsync_end; - adjusted_mode->htotal = fixed_mode->htotal; - - adjusted_mode->vdisplay = fixed_mode->vdisplay; - adjusted_mode->vsync_start = fixed_mode->vsync_start; - adjusted_mode->vsync_end = fixed_mode->vsync_end; - adjusted_mode->vtotal = fixed_mode->vtotal; - - adjusted_mode->clock = fixed_mode->clock; -} - -/* adjusted_mode has been preset to be the panel's fixed mode */ -void -intel_pch_panel_fitting(struct intel_crtc *intel_crtc, - struct intel_crtc_config *pipe_config, - int fitting_mode) -{ - struct drm_display_mode *mode, *adjusted_mode; - int x, y, width, height; - - mode = &pipe_config->requested_mode; - adjusted_mode = &pipe_config->adjusted_mode; - - x = y = width = height = 0; - - /* Native modes don't need fitting */ - if (adjusted_mode->hdisplay == mode->hdisplay && - adjusted_mode->vdisplay == mode->vdisplay) - goto done; - - switch (fitting_mode) { - case DRM_MODE_SCALE_CENTER: - width = mode->hdisplay; - height = mode->vdisplay; - x = (adjusted_mode->hdisplay - width + 1)/2; - y = (adjusted_mode->vdisplay - height + 1)/2; - break; - - case DRM_MODE_SCALE_ASPECT: - /* Scale but preserve the aspect ratio */ - { - u32 scaled_width = adjusted_mode->hdisplay * mode->vdisplay; - u32 scaled_height = mode->hdisplay * adjusted_mode->vdisplay; - if (scaled_width > scaled_height) { /* pillar */ - width = scaled_height / mode->vdisplay; - if (width & 1) - width++; - x = (adjusted_mode->hdisplay - width + 1) / 2; - y = 0; - height = adjusted_mode->vdisplay; - } else if (scaled_width < scaled_height) { /* letter */ - height = scaled_width / mode->hdisplay; - if (height & 1) - height++; - y = (adjusted_mode->vdisplay - height + 1) / 2; - x = 0; - width = adjusted_mode->hdisplay; - } else { - x = y = 0; - width = adjusted_mode->hdisplay; - height = adjusted_mode->vdisplay; - } - } - break; - - case DRM_MODE_SCALE_FULLSCREEN: - x = y = 0; - width = adjusted_mode->hdisplay; - height = adjusted_mode->vdisplay; - break; - - default: - WARN(1, "bad panel fit mode: %d\n", fitting_mode); - return; - } - -done: - pipe_config->pch_pfit.pos = (x << 16) | y; - pipe_config->pch_pfit.size = (width << 16) | height; -} - -static void -centre_horizontally(struct drm_display_mode *mode, - int width) -{ - u32 border, sync_pos, blank_width, sync_width; - - /* keep the hsync and hblank widths constant */ - sync_width = mode->crtc_hsync_end - mode->crtc_hsync_start; - blank_width = mode->crtc_hblank_end - mode->crtc_hblank_start; - sync_pos = (blank_width - sync_width + 1) / 2; - - border = (mode->hdisplay - width + 1) / 2; - border += border & 1; /* make the border even */ - - mode->crtc_hdisplay = width; - mode->crtc_hblank_start = width + border; - mode->crtc_hblank_end = mode->crtc_hblank_start + blank_width; - - mode->crtc_hsync_start = mode->crtc_hblank_start + sync_pos; - mode->crtc_hsync_end = mode->crtc_hsync_start + sync_width; -} - -static void -centre_vertically(struct drm_display_mode *mode, - int height) -{ - u32 border, sync_pos, blank_width, sync_width; - - /* keep the vsync and vblank widths constant */ - sync_width = mode->crtc_vsync_end - mode->crtc_vsync_start; - blank_width = mode->crtc_vblank_end - mode->crtc_vblank_start; - sync_pos = (blank_width - sync_width + 1) / 2; - - border = (mode->vdisplay - height + 1) / 2; - - mode->crtc_vdisplay = height; - mode->crtc_vblank_start = height + border; - mode->crtc_vblank_end = mode->crtc_vblank_start + blank_width; - - mode->crtc_vsync_start = mode->crtc_vblank_start + sync_pos; - mode->crtc_vsync_end = mode->crtc_vsync_start + sync_width; -} - -static inline u32 panel_fitter_scaling(u32 source, u32 target) -{ - /* - * Floating point operation is not supported. So the FACTOR - * is defined, which can avoid the floating point computation - * when calculating the panel ratio. - */ -#define ACCURACY 12 -#define FACTOR (1 << ACCURACY) - u32 ratio = source * FACTOR / target; - return (FACTOR * ratio + FACTOR/2) / FACTOR; -} - -void intel_gmch_panel_fitting(struct intel_crtc *intel_crtc, - struct intel_crtc_config *pipe_config, - int fitting_mode) -{ - struct drm_device *dev = intel_crtc->base.dev; - u32 pfit_control = 0, pfit_pgm_ratios = 0, border = 0; - struct drm_display_mode *mode, *adjusted_mode; - - mode = &pipe_config->requested_mode; - adjusted_mode = &pipe_config->adjusted_mode; - - /* Native modes don't need fitting */ - if (adjusted_mode->hdisplay == mode->hdisplay && - adjusted_mode->vdisplay == mode->vdisplay) - goto out; - - switch (fitting_mode) { - case DRM_MODE_SCALE_CENTER: - /* - * For centered modes, we have to calculate border widths & - * heights and modify the values programmed into the CRTC. - */ - centre_horizontally(adjusted_mode, mode->hdisplay); - centre_vertically(adjusted_mode, mode->vdisplay); - border = LVDS_BORDER_ENABLE; - break; - case DRM_MODE_SCALE_ASPECT: - /* Scale but preserve the aspect ratio */ - if (INTEL_INFO(dev)->gen >= 4) { - u32 scaled_width = adjusted_mode->hdisplay * - mode->vdisplay; - u32 scaled_height = mode->hdisplay * - adjusted_mode->vdisplay; - - /* 965+ is easy, it does everything in hw */ - if (scaled_width > scaled_height) - pfit_control |= PFIT_ENABLE | - PFIT_SCALING_PILLAR; - else if (scaled_width < scaled_height) - pfit_control |= PFIT_ENABLE | - PFIT_SCALING_LETTER; - else if (adjusted_mode->hdisplay != mode->hdisplay) - pfit_control |= PFIT_ENABLE | PFIT_SCALING_AUTO; - } else { - u32 scaled_width = adjusted_mode->hdisplay * - mode->vdisplay; - u32 scaled_height = mode->hdisplay * - adjusted_mode->vdisplay; - /* - * For earlier chips we have to calculate the scaling - * ratio by hand and program it into the - * PFIT_PGM_RATIO register - */ - if (scaled_width > scaled_height) { /* pillar */ - centre_horizontally(adjusted_mode, - scaled_height / - mode->vdisplay); - - border = LVDS_BORDER_ENABLE; - if (mode->vdisplay != adjusted_mode->vdisplay) { - u32 bits = panel_fitter_scaling(mode->vdisplay, adjusted_mode->vdisplay); - pfit_pgm_ratios |= (bits << PFIT_HORIZ_SCALE_SHIFT | - bits << PFIT_VERT_SCALE_SHIFT); - pfit_control |= (PFIT_ENABLE | - VERT_INTERP_BILINEAR | - HORIZ_INTERP_BILINEAR); - } - } else if (scaled_width < scaled_height) { /* letter */ - centre_vertically(adjusted_mode, - scaled_width / - mode->hdisplay); - - border = LVDS_BORDER_ENABLE; - if (mode->hdisplay != adjusted_mode->hdisplay) { - u32 bits = panel_fitter_scaling(mode->hdisplay, adjusted_mode->hdisplay); - pfit_pgm_ratios |= (bits << PFIT_HORIZ_SCALE_SHIFT | - bits << PFIT_VERT_SCALE_SHIFT); - pfit_control |= (PFIT_ENABLE | - VERT_INTERP_BILINEAR | - HORIZ_INTERP_BILINEAR); - } - } else { - /* Aspects match, Let hw scale both directions */ - pfit_control |= (PFIT_ENABLE | - VERT_AUTO_SCALE | HORIZ_AUTO_SCALE | - VERT_INTERP_BILINEAR | - HORIZ_INTERP_BILINEAR); - } - } - break; - case DRM_MODE_SCALE_FULLSCREEN: - /* - * Full scaling, even if it changes the aspect ratio. - * Fortunately this is all done for us in hw. - */ - if (mode->vdisplay != adjusted_mode->vdisplay || - mode->hdisplay != adjusted_mode->hdisplay) { - pfit_control |= PFIT_ENABLE; - if (INTEL_INFO(dev)->gen >= 4) - pfit_control |= PFIT_SCALING_AUTO; - else - pfit_control |= (VERT_AUTO_SCALE | - VERT_INTERP_BILINEAR | - HORIZ_AUTO_SCALE | - HORIZ_INTERP_BILINEAR); - } - break; - default: - WARN(1, "bad panel fit mode: %d\n", fitting_mode); - return; - } - - /* 965+ wants fuzzy fitting */ - /* FIXME: handle multiple panels by failing gracefully */ - if (INTEL_INFO(dev)->gen >= 4) - pfit_control |= ((intel_crtc->pipe << PFIT_PIPE_SHIFT) | - PFIT_FILTER_FUZZY); - -out: - if ((pfit_control & PFIT_ENABLE) == 0) { - pfit_control = 0; - pfit_pgm_ratios = 0; - } - - /* Make sure pre-965 set dither correctly for 18bpp panels. */ - if (INTEL_INFO(dev)->gen < 4 && pipe_config->pipe_bpp == 18) - pfit_control |= PANEL_8TO6_DITHER_ENABLE; - - pipe_config->gmch_pfit.control = pfit_control; - pipe_config->gmch_pfit.pgm_ratios = pfit_pgm_ratios; - pipe_config->gmch_pfit.lvds_border_bits = border; -} - -static int is_backlight_combination_mode(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - - if (INTEL_INFO(dev)->gen >= 4) - return I915_READ(BLC_PWM_CTL2) & BLM_COMBINATION_MODE; - - if (IS_GEN2(dev)) - return I915_READ(BLC_PWM_CTL) & BLM_LEGACY_MODE; - - return 0; -} - -/* XXX: query mode clock or hardware clock and program max PWM appropriately - * when it's 0. - */ -static u32 i915_read_blc_pwm_ctl(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - u32 val; - - WARN_ON_SMP(!spin_is_locked(&dev_priv->backlight.lock)); - - /* Restore the CTL value if it lost, e.g. GPU reset */ - - if (HAS_PCH_SPLIT(dev_priv->dev)) { - val = I915_READ(BLC_PWM_PCH_CTL2); - if (dev_priv->regfile.saveBLC_PWM_CTL2 == 0) { - dev_priv->regfile.saveBLC_PWM_CTL2 = val; - } else if (val == 0) { - val = dev_priv->regfile.saveBLC_PWM_CTL2; - I915_WRITE(BLC_PWM_PCH_CTL2, val); - } - } else { - val = I915_READ(BLC_PWM_CTL); - if (dev_priv->regfile.saveBLC_PWM_CTL == 0) { - dev_priv->regfile.saveBLC_PWM_CTL = val; - if (INTEL_INFO(dev)->gen >= 4) - dev_priv->regfile.saveBLC_PWM_CTL2 = - I915_READ(BLC_PWM_CTL2); - } else if (val == 0) { - val = dev_priv->regfile.saveBLC_PWM_CTL; - I915_WRITE(BLC_PWM_CTL, val); - if (INTEL_INFO(dev)->gen >= 4) - I915_WRITE(BLC_PWM_CTL2, - dev_priv->regfile.saveBLC_PWM_CTL2); - } - } - - return val; -} - -static u32 intel_panel_get_max_backlight(struct drm_device *dev) -{ - u32 max; - - max = i915_read_blc_pwm_ctl(dev); - - if (HAS_PCH_SPLIT(dev)) { - max >>= 16; - } else { - if (INTEL_INFO(dev)->gen < 4) - max >>= 17; - else - max >>= 16; - - if (is_backlight_combination_mode(dev)) - max *= 0xff; - } - - DRM_DEBUG_DRIVER("max backlight PWM = %d\n", max); - - return max; -} - -static int i915_panel_invert_brightness; -MODULE_PARM_DESC(invert_brightness, "Invert backlight brightness " - "(-1 force normal, 0 machine defaults, 1 force inversion), please " - "report PCI device ID, subsystem vendor and subsystem device ID " - "to dri-devel@lists.freedesktop.org, if your machine needs it. " - "It will then be included in an upcoming module version."); -module_param_named(invert_brightness, i915_panel_invert_brightness, int, 0600); -static u32 intel_panel_compute_brightness(struct drm_device *dev, u32 val) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - - if (i915_panel_invert_brightness < 0) - return val; - - if (i915_panel_invert_brightness > 0 || - dev_priv->quirks & QUIRK_INVERT_BRIGHTNESS) { - u32 max = intel_panel_get_max_backlight(dev); - if (max) - return max - val; - } - - return val; -} - -static u32 intel_panel_get_backlight(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - u32 val; - unsigned long flags; - - spin_lock_irqsave(&dev_priv->backlight.lock, flags); - - if (HAS_PCH_SPLIT(dev)) { - val = I915_READ(BLC_PWM_CPU_CTL) & BACKLIGHT_DUTY_CYCLE_MASK; - } else { - val = I915_READ(BLC_PWM_CTL) & BACKLIGHT_DUTY_CYCLE_MASK; - if (INTEL_INFO(dev)->gen < 4) - val >>= 1; - - if (is_backlight_combination_mode(dev)) { - u8 lbpc; - - pci_read_config_byte(dev->pdev, PCI_LBPC, &lbpc); - val *= lbpc; - } - } - - val = intel_panel_compute_brightness(dev, val); - - spin_unlock_irqrestore(&dev_priv->backlight.lock, flags); - - DRM_DEBUG_DRIVER("get backlight PWM = %d\n", val); - return val; -} - -static void intel_pch_panel_set_backlight(struct drm_device *dev, u32 level) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - u32 val = I915_READ(BLC_PWM_CPU_CTL) & ~BACKLIGHT_DUTY_CYCLE_MASK; - I915_WRITE(BLC_PWM_CPU_CTL, val | level); -} - -static void intel_panel_actually_set_backlight(struct drm_device *dev, u32 level) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - u32 tmp; - - DRM_DEBUG_DRIVER("set backlight PWM = %d\n", level); - level = intel_panel_compute_brightness(dev, level); - - if (HAS_PCH_SPLIT(dev)) - return intel_pch_panel_set_backlight(dev, level); - - if (is_backlight_combination_mode(dev)) { - u32 max = intel_panel_get_max_backlight(dev); - u8 lbpc; - - /* we're screwed, but keep behaviour backwards compatible */ - if (!max) - max = 1; - - lbpc = level * 0xfe / max + 1; - level /= lbpc; - pci_write_config_byte(dev->pdev, PCI_LBPC, lbpc); - } - - tmp = I915_READ(BLC_PWM_CTL); - if (INTEL_INFO(dev)->gen < 4) - level <<= 1; - tmp &= ~BACKLIGHT_DUTY_CYCLE_MASK; - I915_WRITE(BLC_PWM_CTL, tmp | level); -} - -/* set backlight brightness to level in range [0..max] */ -void intel_panel_set_backlight(struct drm_device *dev, u32 level, u32 max) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - u32 freq; - unsigned long flags; - - spin_lock_irqsave(&dev_priv->backlight.lock, flags); - - freq = intel_panel_get_max_backlight(dev); - if (!freq) { - /* we are screwed, bail out */ - goto out; - } - - /* scale to hardware */ - level = level * freq / max; - - dev_priv->backlight.level = level; - if (dev_priv->backlight.device) - dev_priv->backlight.device->props.brightness = level; - - if (dev_priv->backlight.enabled) - intel_panel_actually_set_backlight(dev, level); -out: - spin_unlock_irqrestore(&dev_priv->backlight.lock, flags); -} - -void intel_panel_disable_backlight(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - unsigned long flags; - - spin_lock_irqsave(&dev_priv->backlight.lock, flags); - - dev_priv->backlight.enabled = false; - intel_panel_actually_set_backlight(dev, 0); - - if (INTEL_INFO(dev)->gen >= 4) { - uint32_t reg, tmp; - - reg = HAS_PCH_SPLIT(dev) ? BLC_PWM_CPU_CTL2 : BLC_PWM_CTL2; - - I915_WRITE(reg, I915_READ(reg) & ~BLM_PWM_ENABLE); - - if (HAS_PCH_SPLIT(dev)) { - tmp = I915_READ(BLC_PWM_PCH_CTL1); - tmp &= ~BLM_PCH_PWM_ENABLE; - I915_WRITE(BLC_PWM_PCH_CTL1, tmp); - } - } - - spin_unlock_irqrestore(&dev_priv->backlight.lock, flags); -} - -void intel_panel_enable_backlight(struct drm_device *dev, - enum pipe pipe) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - enum transcoder cpu_transcoder = - intel_pipe_to_cpu_transcoder(dev_priv, pipe); - unsigned long flags; - - spin_lock_irqsave(&dev_priv->backlight.lock, flags); - - if (dev_priv->backlight.level == 0) { - dev_priv->backlight.level = intel_panel_get_max_backlight(dev); - if (dev_priv->backlight.device) - dev_priv->backlight.device->props.brightness = - dev_priv->backlight.level; - } - - if (INTEL_INFO(dev)->gen >= 4) { - uint32_t reg, tmp; - - reg = HAS_PCH_SPLIT(dev) ? BLC_PWM_CPU_CTL2 : BLC_PWM_CTL2; - - - tmp = I915_READ(reg); - - /* Note that this can also get called through dpms changes. And - * we don't track the backlight dpms state, hence check whether - * we have to do anything first. */ - if (tmp & BLM_PWM_ENABLE) - goto set_level; - - if (INTEL_INFO(dev)->num_pipes == 3) - tmp &= ~BLM_PIPE_SELECT_IVB; - else - tmp &= ~BLM_PIPE_SELECT; - - if (cpu_transcoder == TRANSCODER_EDP) - tmp |= BLM_TRANSCODER_EDP; - else - tmp |= BLM_PIPE(cpu_transcoder); - tmp &= ~BLM_PWM_ENABLE; - - I915_WRITE(reg, tmp); - POSTING_READ(reg); - I915_WRITE(reg, tmp | BLM_PWM_ENABLE); - - if (HAS_PCH_SPLIT(dev)) { - tmp = I915_READ(BLC_PWM_PCH_CTL1); - tmp |= BLM_PCH_PWM_ENABLE; - tmp &= ~BLM_PCH_OVERRIDE_ENABLE; - I915_WRITE(BLC_PWM_PCH_CTL1, tmp); - } - } - -set_level: - /* Call below after setting BLC_PWM_CPU_CTL2 and BLC_PWM_PCH_CTL1. - * BLC_PWM_CPU_CTL may be cleared to zero automatically when these - * registers are set. - */ - dev_priv->backlight.enabled = true; - intel_panel_actually_set_backlight(dev, dev_priv->backlight.level); - - spin_unlock_irqrestore(&dev_priv->backlight.lock, flags); -} - -static void intel_panel_init_backlight(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - - dev_priv->backlight.level = intel_panel_get_backlight(dev); - dev_priv->backlight.enabled = dev_priv->backlight.level != 0; -} - -enum drm_connector_status -intel_panel_detect(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - - /* Assume that the BIOS does not lie through the OpRegion... */ - if (!i915_panel_ignore_lid && dev_priv->opregion.lid_state) { - return ioread32(dev_priv->opregion.lid_state) & 0x1 ? - connector_status_connected : - connector_status_disconnected; - } - - switch (i915_panel_ignore_lid) { - case -2: - return connector_status_connected; - case -1: - return connector_status_disconnected; - default: - return connector_status_unknown; - } -} - -#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE -static int intel_panel_update_status(struct backlight_device *bd) -{ - struct drm_device *dev = bl_get_data(bd); - intel_panel_set_backlight(dev, bd->props.brightness, - bd->props.max_brightness); - return 0; -} - -static int intel_panel_get_brightness(struct backlight_device *bd) -{ - struct drm_device *dev = bl_get_data(bd); - return intel_panel_get_backlight(dev); -} - -static const struct backlight_ops intel_panel_bl_ops = { - .update_status = intel_panel_update_status, - .get_brightness = intel_panel_get_brightness, -}; - -int intel_panel_setup_backlight(struct drm_connector *connector) -{ - struct drm_device *dev = connector->dev; - struct drm_i915_private *dev_priv = dev->dev_private; - struct backlight_properties props; - unsigned long flags; - - intel_panel_init_backlight(dev); - - if (WARN_ON(dev_priv->backlight.device)) - return -ENODEV; - - memset(&props, 0, sizeof(props)); - props.type = BACKLIGHT_RAW; - props.brightness = dev_priv->backlight.level; - - spin_lock_irqsave(&dev_priv->backlight.lock, flags); - props.max_brightness = intel_panel_get_max_backlight(dev); - spin_unlock_irqrestore(&dev_priv->backlight.lock, flags); - - if (props.max_brightness == 0) { - DRM_DEBUG_DRIVER("Failed to get maximum backlight value\n"); - return -ENODEV; - } - dev_priv->backlight.device = - backlight_device_register("intel_backlight", - &connector->kdev, dev, - &intel_panel_bl_ops, &props); - - if (IS_ERR(dev_priv->backlight.device)) { - DRM_ERROR("Failed to register backlight: %ld\n", - PTR_ERR(dev_priv->backlight.device)); - dev_priv->backlight.device = NULL; - return -ENODEV; - } - return 0; -} - -void intel_panel_destroy_backlight(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - if (dev_priv->backlight.device) { - backlight_device_unregister(dev_priv->backlight.device); - dev_priv->backlight.device = NULL; - } -} -#else -int intel_panel_setup_backlight(struct drm_connector *connector) -{ - intel_panel_init_backlight(connector->dev); - return 0; -} - -void intel_panel_destroy_backlight(struct drm_device *dev) -{ - return; -} -#endif - -int intel_panel_init(struct intel_panel *panel, - struct drm_display_mode *fixed_mode) -{ - panel->fixed_mode = fixed_mode; - - return 0; -} - -void intel_panel_fini(struct intel_panel *panel) -{ - struct intel_connector *intel_connector = - container_of(panel, struct intel_connector, panel); - - if (panel->fixed_mode) - drm_mode_destroy(intel_connector->base.dev, panel->fixed_mode); -} |