diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_lvds.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_lvds.c | 817 |
1 files changed, 364 insertions, 453 deletions
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c index 0eab8df5bf7e..f1a649990ea9 100644 --- a/drivers/gpu/drm/i915/intel_lvds.c +++ b/drivers/gpu/drm/i915/intel_lvds.c @@ -41,100 +41,78 @@ #include <linux/acpi.h> /* Private structure for the integrated LVDS support */ -struct intel_lvds_priv { +struct intel_lvds { + struct intel_encoder base; + + struct edid *edid; + int fitting_mode; u32 pfit_control; u32 pfit_pgm_ratios; + bool pfit_dirty; + + struct drm_display_mode *fixed_mode; }; -/** - * 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) +static struct intel_lvds *to_intel_lvds(struct drm_encoder *encoder) { - struct drm_i915_private *dev_priv = dev->dev_private; - u32 blc_pwm_ctl, reg; - - if (HAS_PCH_SPLIT(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))); + return container_of(encoder, struct intel_lvds, base.base); } -/** - * Returns the maximum level of the backlight duty cycle field. - */ -static u32 intel_lvds_get_max_backlight(struct drm_device *dev) +static struct intel_lvds *intel_attached_lvds(struct drm_connector *connector) { - struct drm_i915_private *dev_priv = dev->dev_private; - u32 reg; - - if (HAS_PCH_SPLIT(dev)) - reg = BLC_PWM_PCH_CTL2; - else - reg = BLC_PWM_CTL; - - return ((I915_READ(reg) & BACKLIGHT_MODULATION_FREQ_MASK) >> - BACKLIGHT_MODULATION_FREQ_SHIFT) * 2; + return container_of(intel_attached_encoder(connector), + struct intel_lvds, base); } /** * Sets the power state for the panel. */ -static void intel_lvds_set_power(struct drm_device *dev, bool on) +static void intel_lvds_set_power(struct intel_lvds *intel_lvds, bool on) { + struct drm_device *dev = intel_lvds->base.base.dev; struct drm_i915_private *dev_priv = dev->dev_private; - u32 pp_status, ctl_reg, status_reg, lvds_reg; + u32 ctl_reg, lvds_reg; if (HAS_PCH_SPLIT(dev)) { ctl_reg = PCH_PP_CONTROL; - status_reg = PCH_PP_STATUS; lvds_reg = PCH_LVDS; } else { ctl_reg = PP_CONTROL; - status_reg = PP_STATUS; lvds_reg = LVDS; } if (on) { I915_WRITE(lvds_reg, I915_READ(lvds_reg) | LVDS_PORT_EN); - POSTING_READ(lvds_reg); - - 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); + I915_WRITE(ctl_reg, I915_READ(ctl_reg) | POWER_TARGET_ON); + intel_panel_set_backlight(dev, dev_priv->backlight_level); } else { - intel_lvds_set_backlight(dev, 0); + dev_priv->backlight_level = intel_panel_get_backlight(dev); - I915_WRITE(ctl_reg, I915_READ(ctl_reg) & - ~POWER_TARGET_ON); - do { - pp_status = I915_READ(status_reg); - } while (pp_status & PP_ON); + intel_panel_set_backlight(dev, 0); + I915_WRITE(ctl_reg, I915_READ(ctl_reg) & ~POWER_TARGET_ON); + + if (intel_lvds->pfit_control) { + if (wait_for((I915_READ(PP_STATUS) & PP_ON) == 0, 1000)) + DRM_ERROR("timed out waiting for panel to power off\n"); + I915_WRITE(PFIT_CONTROL, 0); + intel_lvds->pfit_control = 0; + intel_lvds->pfit_dirty = false; + } I915_WRITE(lvds_reg, I915_READ(lvds_reg) & ~LVDS_PORT_EN); - POSTING_READ(lvds_reg); } + POSTING_READ(lvds_reg); } static void intel_lvds_dpms(struct drm_encoder *encoder, int mode) { - struct drm_device *dev = encoder->dev; + struct intel_lvds *intel_lvds = to_intel_lvds(encoder); if (mode == DRM_MODE_DPMS_ON) - intel_lvds_set_power(dev, true); + intel_lvds_set_power(intel_lvds, true); else - intel_lvds_set_power(dev, false); + intel_lvds_set_power(intel_lvds, false); /* XXX: We never power down the LVDS pairs. */ } @@ -142,48 +120,86 @@ static void intel_lvds_dpms(struct drm_encoder *encoder, int mode) 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; + struct intel_lvds *intel_lvds = intel_attached_lvds(connector); + struct drm_display_mode *fixed_mode = intel_lvds->fixed_mode; - if (fixed_mode) { - if (mode->hdisplay > fixed_mode->hdisplay) - return MODE_PANEL; - if (mode->vdisplay > fixed_mode->vdisplay) - return MODE_PANEL; - } + if (mode->hdisplay > fixed_mode->hdisplay) + return MODE_PANEL; + if (mode->vdisplay > fixed_mode->vdisplay) + return MODE_PANEL; return MODE_OK; } +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; +} + static bool intel_lvds_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) { - /* - * float point operation is not supported . So the PANEL_RATIO_FACTOR - * is defined, which can avoid the float point computation when - * calculating the panel ratio. - */ -#define PANEL_RATIO_FACTOR 8192 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 intel_lvds *intel_lvds = to_intel_lvds(encoder); struct drm_encoder *tmp_encoder; - struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder); - struct intel_lvds_priv *lvds_priv = intel_encoder->dev_priv; - u32 pfit_control = 0, pfit_pgm_ratios = 0; - int left_border = 0, right_border = 0, top_border = 0; - int bottom_border = 0; - bool border = 0; - int panel_ratio, desired_ratio, vert_scale, horiz_scale; - int horiz_ratio, vert_ratio; - u32 hsync_width, vsync_width; - u32 hblank_width, vblank_width; - u32 hsync_pos, vsync_pos; + u32 pfit_control = 0, pfit_pgm_ratios = 0, border = 0; /* Should never happen!! */ - if (!IS_I965G(dev) && intel_crtc->pipe == 0) { + if (INTEL_INFO(dev)->gen < 4 && intel_crtc->pipe == 0) { DRM_ERROR("Can't support LVDS on pipe A\n"); return false; } @@ -196,252 +212,109 @@ static bool intel_lvds_mode_fixup(struct drm_encoder *encoder, return false; } } - /* If we don't have a panel mode, there is nothing we can do */ - if (dev_priv->panel_fixed_mode == NULL) - return true; + /* - * If we have timings from the BIOS for the panel, put them in + * 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); + intel_fixed_panel_mode(intel_lvds->fixed_mode, adjusted_mode); + + if (HAS_PCH_SPLIT(dev)) { + intel_pch_panel_fitting(dev, intel_lvds->fitting_mode, + mode, adjusted_mode); + return true; } /* Make sure pre-965s set dither correctly */ - if (!IS_I965G(dev)) { - if (dev_priv->panel_wants_dither || dev_priv->lvds_dither) + if (INTEL_INFO(dev)->gen < 4) { + if (dev_priv->lvds_dither) pfit_control |= PANEL_8TO6_DITHER_ENABLE; } /* Native modes don't need fitting */ if (adjusted_mode->hdisplay == mode->hdisplay && - adjusted_mode->vdisplay == mode->vdisplay) { - pfit_pgm_ratios = 0; - border = 0; - goto out; - } - - /* full screen scale for now */ - if (HAS_PCH_SPLIT(dev)) + adjusted_mode->vdisplay == mode->vdisplay) goto out; /* 965+ wants fuzzy fitting */ - if (IS_I965G(dev)) - pfit_control |= (intel_crtc->pipe << PFIT_PIPE_SHIFT) | - PFIT_FILTER_FUZZY; - - hsync_width = adjusted_mode->crtc_hsync_end - - adjusted_mode->crtc_hsync_start; - vsync_width = adjusted_mode->crtc_vsync_end - - adjusted_mode->crtc_vsync_start; - hblank_width = adjusted_mode->crtc_hblank_end - - adjusted_mode->crtc_hblank_start; - vblank_width = adjusted_mode->crtc_vblank_end - - adjusted_mode->crtc_vblank_start; - /* - * Deal with panel fitting options. Figure out how to stretch the - * image based on its aspect ratio & the current panel fitting mode. - */ - panel_ratio = adjusted_mode->hdisplay * PANEL_RATIO_FACTOR / - adjusted_mode->vdisplay; - desired_ratio = mode->hdisplay * PANEL_RATIO_FACTOR / - mode->vdisplay; + if (INTEL_INFO(dev)->gen >= 4) + pfit_control |= ((intel_crtc->pipe << PFIT_PIPE_SHIFT) | + PFIT_FILTER_FUZZY); + /* * Enable automatic panel scaling for non-native modes so that they fill * the screen. Should be enabled before the pipe is enabled, according * to register description and PRM. * Change the value here to see the borders for debugging */ - if (!HAS_PCH_SPLIT(dev)) { - I915_WRITE(BCLRPAT_A, 0); - I915_WRITE(BCLRPAT_B, 0); - } + I915_WRITE(BCLRPAT_A, 0); + I915_WRITE(BCLRPAT_B, 0); - switch (lvds_priv->fitting_mode) { + switch (intel_lvds->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. */ - left_border = (adjusted_mode->hdisplay - mode->hdisplay) / 2; - right_border = left_border; - if (mode->hdisplay & 1) - right_border++; - top_border = (adjusted_mode->vdisplay - mode->vdisplay) / 2; - bottom_border = top_border; - if (mode->vdisplay & 1) - bottom_border++; - /* Set active & border values */ - adjusted_mode->crtc_hdisplay = mode->hdisplay; - /* Keep the boder be even */ - if (right_border & 1) - right_border++; - /* use the border directly instead of border minuse one */ - adjusted_mode->crtc_hblank_start = mode->hdisplay + - right_border; - /* keep the blank width constant */ - adjusted_mode->crtc_hblank_end = - adjusted_mode->crtc_hblank_start + hblank_width; - /* get the hsync pos relative to hblank start */ - hsync_pos = (hblank_width - hsync_width) / 2; - /* keep the hsync pos be even */ - if (hsync_pos & 1) - hsync_pos++; - adjusted_mode->crtc_hsync_start = - adjusted_mode->crtc_hblank_start + hsync_pos; - /* keep the hsync width constant */ - adjusted_mode->crtc_hsync_end = - adjusted_mode->crtc_hsync_start + hsync_width; - adjusted_mode->crtc_vdisplay = mode->vdisplay; - /* use the border instead of border minus one */ - adjusted_mode->crtc_vblank_start = mode->vdisplay + - bottom_border; - /* keep the vblank width constant */ - adjusted_mode->crtc_vblank_end = - adjusted_mode->crtc_vblank_start + vblank_width; - /* get the vsync start postion relative to vblank start */ - vsync_pos = (vblank_width - vsync_width) / 2; - adjusted_mode->crtc_vsync_start = - adjusted_mode->crtc_vblank_start + vsync_pos; - /* keep the vsync width constant */ - adjusted_mode->crtc_vsync_end = - adjusted_mode->crtc_vsync_start + vsync_width; - border = 1; + 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 spect ratio */ - pfit_control |= PFIT_ENABLE; - if (IS_I965G(dev)) { + /* 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; + + pfit_control |= PFIT_ENABLE; /* 965+ is easy, it does everything in hw */ - if (panel_ratio > desired_ratio) + if (scaled_width > scaled_height) pfit_control |= PFIT_SCALING_PILLAR; - else if (panel_ratio < desired_ratio) + else if (scaled_width < scaled_height) pfit_control |= PFIT_SCALING_LETTER; else pfit_control |= 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 */ - u32 horiz_bits, vert_bits, bits = 12; - horiz_ratio = mode->hdisplay * PANEL_RATIO_FACTOR/ - adjusted_mode->hdisplay; - vert_ratio = mode->vdisplay * PANEL_RATIO_FACTOR/ - adjusted_mode->vdisplay; - horiz_scale = adjusted_mode->hdisplay * - PANEL_RATIO_FACTOR / mode->hdisplay; - vert_scale = adjusted_mode->vdisplay * - PANEL_RATIO_FACTOR / mode->vdisplay; - - /* retain aspect ratio */ - if (panel_ratio > desired_ratio) { /* Pillar */ - u32 scaled_width; - scaled_width = mode->hdisplay * vert_scale / - PANEL_RATIO_FACTOR; - horiz_ratio = vert_ratio; - pfit_control |= (VERT_AUTO_SCALE | - VERT_INTERP_BILINEAR | - HORIZ_INTERP_BILINEAR); - /* Pillar will have left/right borders */ - left_border = (adjusted_mode->hdisplay - - scaled_width) / 2; - right_border = left_border; - if (mode->hdisplay & 1) /* odd resolutions */ - right_border++; - /* keep the border be even */ - if (right_border & 1) - right_border++; - adjusted_mode->crtc_hdisplay = scaled_width; - /* use border instead of border minus one */ - adjusted_mode->crtc_hblank_start = - scaled_width + right_border; - /* keep the hblank width constant */ - adjusted_mode->crtc_hblank_end = - adjusted_mode->crtc_hblank_start + - hblank_width; - /* - * get the hsync start pos relative to - * hblank start - */ - hsync_pos = (hblank_width - hsync_width) / 2; - /* keep the hsync_pos be even */ - if (hsync_pos & 1) - hsync_pos++; - adjusted_mode->crtc_hsync_start = - adjusted_mode->crtc_hblank_start + - hsync_pos; - /* keept hsync width constant */ - adjusted_mode->crtc_hsync_end = - adjusted_mode->crtc_hsync_start + - hsync_width; - border = 1; - } else if (panel_ratio < desired_ratio) { /* letter */ - u32 scaled_height = mode->vdisplay * - horiz_scale / PANEL_RATIO_FACTOR; - vert_ratio = horiz_ratio; - pfit_control |= (HORIZ_AUTO_SCALE | - VERT_INTERP_BILINEAR | - HORIZ_INTERP_BILINEAR); - /* Letterbox will have top/bottom border */ - top_border = (adjusted_mode->vdisplay - - scaled_height) / 2; - bottom_border = top_border; - if (mode->vdisplay & 1) - bottom_border++; - adjusted_mode->crtc_vdisplay = scaled_height; - /* use border instead of border minus one */ - adjusted_mode->crtc_vblank_start = - scaled_height + bottom_border; - /* keep the vblank width constant */ - adjusted_mode->crtc_vblank_end = - adjusted_mode->crtc_vblank_start + - vblank_width; - /* - * get the vsync start pos relative to - * vblank start - */ - vsync_pos = (vblank_width - vsync_width) / 2; - adjusted_mode->crtc_vsync_start = - adjusted_mode->crtc_vblank_start + - vsync_pos; - /* keep the vsync width constant */ - adjusted_mode->crtc_vsync_end = - adjusted_mode->crtc_vsync_start + - vsync_width; - border = 1; - } else { - /* Aspects match, Let hw scale both directions */ - pfit_control |= (VERT_AUTO_SCALE | - HORIZ_AUTO_SCALE | + 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); - } - horiz_bits = (1 << bits) * horiz_ratio / - PANEL_RATIO_FACTOR; - vert_bits = (1 << bits) * vert_ratio / - PANEL_RATIO_FACTOR; - pfit_pgm_ratios = - ((vert_bits << PFIT_VERT_SCALE_SHIFT) & - PFIT_VERT_SCALE_MASK) | - ((horiz_bits << PFIT_HORIZ_SCALE_SHIFT) & - PFIT_HORIZ_SCALE_MASK); } break; @@ -451,28 +324,27 @@ static bool intel_lvds_mode_fixup(struct drm_encoder *encoder, * Fortunately this is all done for us in hw. */ pfit_control |= PFIT_ENABLE; - if (IS_I965G(dev)) + if (INTEL_INFO(dev)->gen >= 4) pfit_control |= PFIT_SCALING_AUTO; else pfit_control |= (VERT_AUTO_SCALE | HORIZ_AUTO_SCALE | VERT_INTERP_BILINEAR | HORIZ_INTERP_BILINEAR); break; + default: break; } out: - lvds_priv->pfit_control = pfit_control; - lvds_priv->pfit_pgm_ratios = pfit_pgm_ratios; - /* - * When there exists the border, it means that the LVDS_BORDR - * should be enabled. - */ - if (border) - dev_priv->lvds_border_bits |= LVDS_BORDER_ENABLE; - else - dev_priv->lvds_border_bits &= ~(LVDS_BORDER_ENABLE); + if (pfit_control != intel_lvds->pfit_control || + pfit_pgm_ratios != intel_lvds->pfit_pgm_ratios) { + intel_lvds->pfit_control = pfit_control; + intel_lvds->pfit_pgm_ratios = pfit_pgm_ratios; + intel_lvds->pfit_dirty = true; + } + dev_priv->lvds_border_bits = border; + /* * XXX: It would be nice to support lower refresh rates on the * panels to reduce power consumption, and perhaps match the @@ -486,30 +358,60 @@ 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 (HAS_PCH_SPLIT(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); + struct intel_lvds *intel_lvds = to_intel_lvds(encoder); + + dev_priv->backlight_level = intel_panel_get_backlight(dev); + + /* We try to do the minimum that is necessary in order to unlock + * the registers for mode setting. + * + * On Ironlake, this is quite simple as we just set the unlock key + * and ignore all subtleties. (This may cause some issues...) + * + * Prior to Ironlake, we must disable the pipe if we want to adjust + * the panel fitter. However at all other times we can just reset + * the registers regardless. + */ - intel_lvds_set_power(dev, false); + if (HAS_PCH_SPLIT(dev)) { + I915_WRITE(PCH_PP_CONTROL, + I915_READ(PCH_PP_CONTROL) | PANEL_UNLOCK_REGS); + } else if (intel_lvds->pfit_dirty) { + I915_WRITE(PP_CONTROL, + (I915_READ(PP_CONTROL) | PANEL_UNLOCK_REGS) + & ~POWER_TARGET_ON); + } else { + I915_WRITE(PP_CONTROL, + I915_READ(PP_CONTROL) | PANEL_UNLOCK_REGS); + } } -static void intel_lvds_commit( struct drm_encoder *encoder) +static void intel_lvds_commit(struct drm_encoder *encoder) { struct drm_device *dev = encoder->dev; struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_lvds *intel_lvds = to_intel_lvds(encoder); - if (dev_priv->backlight_duty_cycle == 0) - dev_priv->backlight_duty_cycle = - intel_lvds_get_max_backlight(dev); + if (dev_priv->backlight_level == 0) + dev_priv->backlight_level = intel_panel_get_max_backlight(dev); + + /* Undo any unlocking done in prepare to prevent accidental + * adjustment of the registers. + */ + if (HAS_PCH_SPLIT(dev)) { + u32 val = I915_READ(PCH_PP_CONTROL); + if ((val & PANEL_UNLOCK_REGS) == PANEL_UNLOCK_REGS) + I915_WRITE(PCH_PP_CONTROL, val & 0x3); + } else { + u32 val = I915_READ(PP_CONTROL); + if ((val & PANEL_UNLOCK_REGS) == PANEL_UNLOCK_REGS) + I915_WRITE(PP_CONTROL, val & 0x3); + } - intel_lvds_set_power(dev, true); + /* Always do a full power on as we do not know what state + * we were left in. + */ + intel_lvds_set_power(intel_lvds, true); } static void intel_lvds_mode_set(struct drm_encoder *encoder, @@ -518,8 +420,7 @@ static void intel_lvds_mode_set(struct drm_encoder *encoder, { struct drm_device *dev = encoder->dev; struct drm_i915_private *dev_priv = dev->dev_private; - struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder); - struct intel_lvds_priv *lvds_priv = intel_encoder->dev_priv; + struct intel_lvds *intel_lvds = to_intel_lvds(encoder); /* * The LVDS pin pair will already have been turned on in the @@ -530,13 +431,23 @@ static void intel_lvds_mode_set(struct drm_encoder *encoder, if (HAS_PCH_SPLIT(dev)) return; + if (!intel_lvds->pfit_dirty) + 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. */ - I915_WRITE(PFIT_PGM_RATIOS, lvds_priv->pfit_pgm_ratios); - I915_WRITE(PFIT_CONTROL, lvds_priv->pfit_control); + DRM_DEBUG_KMS("applying panel-fitter: %x, %x\n", + intel_lvds->pfit_control, + intel_lvds->pfit_pgm_ratios); + if (wait_for((I915_READ(PP_STATUS) & PP_ON) == 0, 1000)) + DRM_ERROR("timed out waiting for panel to power off\n"); + + I915_WRITE(PFIT_PGM_RATIOS, intel_lvds->pfit_pgm_ratios); + I915_WRITE(PFIT_CONTROL, intel_lvds->pfit_control); + intel_lvds->pfit_dirty = false; } /** @@ -546,7 +457,8 @@ static void intel_lvds_mode_set(struct drm_encoder *encoder, * connected and closed means disconnected. We also send hotplug events as * needed, using lid status notification from the input layer. */ -static enum drm_connector_status intel_lvds_detect(struct drm_connector *connector) +static enum drm_connector_status +intel_lvds_detect(struct drm_connector *connector, bool force) { struct drm_device *dev = connector->dev; enum drm_connector_status status = connector_status_connected; @@ -565,38 +477,22 @@ static enum drm_connector_status intel_lvds_detect(struct drm_connector *connect */ static int intel_lvds_get_modes(struct drm_connector *connector) { + struct intel_lvds *intel_lvds = intel_attached_lvds(connector); struct drm_device *dev = connector->dev; - struct drm_encoder *encoder = intel_attached_encoder(connector); - struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder); - struct drm_i915_private *dev_priv = dev->dev_private; - int ret = 0; + struct drm_display_mode *mode; - if (dev_priv->lvds_edid_good) { - ret = intel_ddc_get_modes(connector, intel_encoder->ddc_bus); - - if (ret) - return ret; + if (intel_lvds->edid) { + drm_mode_connector_update_edid_property(connector, + intel_lvds->edid); + return drm_add_edid_modes(connector, intel_lvds->edid); } - /* 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); + mode = drm_mode_duplicate(dev, intel_lvds->fixed_mode); + if (mode == 0) + return 0; - return 1; - } - - return 0; + drm_mode_probed_add(connector, mode); + return 1; } static int intel_no_modeset_on_lid_dmi_callback(const struct dmi_system_id *id) @@ -641,7 +537,9 @@ static int intel_lid_notify(struct notifier_block *nb, unsigned long val, * the LID nofication event. */ if (connector) - connector->status = connector->funcs->detect(connector); + connector->status = connector->funcs->detect(connector, + false); + /* Don't force modeset on machines where it causes a GPU lockup */ if (dmi_check_system(intel_no_modeset_on_lid)) return NOTIFY_OK; @@ -685,24 +583,22 @@ static int intel_lvds_set_property(struct drm_connector *connector, struct drm_property *property, uint64_t value) { + struct intel_lvds *intel_lvds = intel_attached_lvds(connector); struct drm_device *dev = connector->dev; - if (property == dev->mode_config.scaling_mode_property && - connector->encoder) { - struct drm_crtc *crtc = connector->encoder->crtc; - struct drm_encoder *encoder = connector->encoder; - struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder); - struct intel_lvds_priv *lvds_priv = intel_encoder->dev_priv; + if (property == dev->mode_config.scaling_mode_property) { + struct drm_crtc *crtc = intel_lvds->base.base.crtc; if (value == DRM_MODE_SCALE_NONE) { DRM_DEBUG_KMS("no scaling not supported\n"); - return 0; + return -EINVAL; } - if (lvds_priv->fitting_mode == value) { + + if (intel_lvds->fitting_mode == value) { /* the LVDS scaling property is not changed */ return 0; } - lvds_priv->fitting_mode = value; + intel_lvds->fitting_mode = value; if (crtc && crtc->enabled) { /* * If the CRTC is enabled, the display will be changed @@ -727,7 +623,7 @@ static const struct drm_encoder_helper_funcs intel_lvds_helper_funcs = { 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_attached_encoder, + .best_encoder = intel_best_encoder, }; static const struct drm_connector_funcs intel_lvds_connector_funcs = { @@ -738,19 +634,8 @@ static const struct drm_connector_funcs intel_lvds_connector_funcs = { .destroy = intel_lvds_destroy, }; - -static void intel_lvds_enc_destroy(struct drm_encoder *encoder) -{ - struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder); - - if (intel_encoder->ddc_bus) - intel_i2c_destroy(intel_encoder->ddc_bus); - drm_encoder_cleanup(encoder); - kfree(intel_encoder); -} - static const struct drm_encoder_funcs intel_lvds_enc_funcs = { - .destroy = intel_lvds_enc_destroy, + .destroy = intel_encoder_destroy, }; static int __init intel_no_lvds_dmi_callback(const struct dmi_system_id *id) @@ -836,16 +721,14 @@ static const struct dmi_system_id intel_no_lvds[] = { * Find the reduced downclock for LVDS in EDID. */ static void intel_find_lvds_downclock(struct drm_device *dev, - struct drm_connector *connector) + struct drm_display_mode *fixed_mode, + struct drm_connector *connector) { struct drm_i915_private *dev_priv = dev->dev_private; - struct drm_display_mode *scan, *panel_fixed_mode; + struct drm_display_mode *scan; int temp_downclock; - panel_fixed_mode = dev_priv->panel_fixed_mode; - temp_downclock = panel_fixed_mode->clock; - - mutex_lock(&dev->mode_config.mutex); + temp_downclock = fixed_mode->clock; list_for_each_entry(scan, &connector->probed_modes, head) { /* * If one mode has the same resolution with the fixed_panel @@ -854,14 +737,14 @@ static void intel_find_lvds_downclock(struct drm_device *dev, * case we can set the different FPx0/1 to dynamically select * between low and high frequency. */ - if (scan->hdisplay == panel_fixed_mode->hdisplay && - scan->hsync_start == panel_fixed_mode->hsync_start && - scan->hsync_end == panel_fixed_mode->hsync_end && - scan->htotal == panel_fixed_mode->htotal && - scan->vdisplay == panel_fixed_mode->vdisplay && - scan->vsync_start == panel_fixed_mode->vsync_start && - scan->vsync_end == panel_fixed_mode->vsync_end && - scan->vtotal == panel_fixed_mode->vtotal) { + if (scan->hdisplay == fixed_mode->hdisplay && + scan->hsync_start == fixed_mode->hsync_start && + scan->hsync_end == fixed_mode->hsync_end && + scan->htotal == fixed_mode->htotal && + scan->vdisplay == fixed_mode->vdisplay && + scan->vsync_start == fixed_mode->vsync_start && + scan->vsync_end == fixed_mode->vsync_end && + scan->vtotal == fixed_mode->vtotal) { if (scan->clock < temp_downclock) { /* * The downclock is already found. But we @@ -871,17 +754,14 @@ static void intel_find_lvds_downclock(struct drm_device *dev, } } } - mutex_unlock(&dev->mode_config.mutex); - if (temp_downclock < panel_fixed_mode->clock && - i915_lvds_downclock) { + if (temp_downclock < fixed_mode->clock && i915_lvds_downclock) { /* We found the downclock for LVDS. */ dev_priv->lvds_downclock_avail = 1; dev_priv->lvds_downclock = temp_downclock; DRM_DEBUG_KMS("LVDS downclock is found in EDID. " - "Normal clock %dKhz, downclock %dKhz\n", - panel_fixed_mode->clock, temp_downclock); + "Normal clock %dKhz, downclock %dKhz\n", + fixed_mode->clock, temp_downclock); } - return; } /* @@ -890,38 +770,67 @@ static void intel_find_lvds_downclock(struct drm_device *dev, * If it is present, return 1. * If it is not present, return false. * If no child dev is parsed from VBT, it assumes that the LVDS is present. - * Note: The addin_offset should also be checked for LVDS panel. - * Only when it is non-zero, it is assumed that it is present. */ -static int lvds_is_present_in_vbt(struct drm_device *dev) +static bool lvds_is_present_in_vbt(struct drm_device *dev, + u8 *i2c_pin) { struct drm_i915_private *dev_priv = dev->dev_private; - struct child_device_config *p_child; - int i, ret; + int i; if (!dev_priv->child_dev_num) - return 1; + return true; - ret = 0; for (i = 0; i < dev_priv->child_dev_num; i++) { - p_child = dev_priv->child_dev + i; - /* - * If the device type is not LFP, continue. - * If the device type is 0x22, it is also regarded as LFP. + struct child_device_config *child = dev_priv->child_dev + i; + + /* If the device type is not LFP, continue. + * We have to check both the new identifiers as well as the + * old for compatibility with some BIOSes. */ - if (p_child->device_type != DEVICE_TYPE_INT_LFP && - p_child->device_type != DEVICE_TYPE_LFP) + if (child->device_type != DEVICE_TYPE_INT_LFP && + child->device_type != DEVICE_TYPE_LFP) continue; - /* The addin_offset should be checked. Only when it is - * non-zero, it is regarded as present. + if (child->i2c_pin) + *i2c_pin = child->i2c_pin; + + /* However, we cannot trust the BIOS writers to populate + * the VBT correctly. Since LVDS requires additional + * information from AIM blocks, a non-zero addin offset is + * a good indicator that the LVDS is actually present. */ - if (p_child->addin_offset) { - ret = 1; - break; - } + if (child->addin_offset) + return true; + + /* But even then some BIOS writers perform some black magic + * and instantiate the device without reference to any + * additional data. Trust that if the VBT was written into + * the OpRegion then they have validated the LVDS's existence. + */ + if (dev_priv->opregion.vbt) + return true; } - return ret; + + return false; +} + +static bool intel_lvds_ddc_probe(struct drm_device *dev, u8 pin) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + u8 buf = 0; + struct i2c_msg msgs[] = { + { + .addr = 0xA0, + .flags = 0, + .len = 1, + .buf = &buf, + }, + }; + struct i2c_adapter *i2c = &dev_priv->gmbus[pin].adapter; + /* XXX this only appears to work when using GMBUS */ + if (intel_gmbus_is_forced_bit(i2c)) + return true; + return i2c_transfer(i2c, msgs, 1) == 1; } /** @@ -934,21 +843,23 @@ static int lvds_is_present_in_vbt(struct drm_device *dev) void intel_lvds_init(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_lvds *intel_lvds; struct intel_encoder *intel_encoder; struct intel_connector *intel_connector; struct drm_connector *connector; struct drm_encoder *encoder; struct drm_display_mode *scan; /* *modes, *bios_mode; */ struct drm_crtc *crtc; - struct intel_lvds_priv *lvds_priv; u32 lvds; - int pipe, gpio = GPIOC; + int pipe; + u8 pin; /* Skip init on machines we know falsely report LVDS */ if (dmi_check_system(intel_no_lvds)) return; - if (!lvds_is_present_in_vbt(dev)) { + pin = GMBUS_PORT_PANEL; + if (!lvds_is_present_in_vbt(dev, &pin)) { DRM_DEBUG_KMS("LVDS is not present in VBT\n"); return; } @@ -956,48 +867,52 @@ void intel_lvds_init(struct drm_device *dev) if (HAS_PCH_SPLIT(dev)) { if ((I915_READ(PCH_LVDS) & LVDS_DETECTED) == 0) return; - if (dev_priv->edp_support) { + if (dev_priv->edp.support) { DRM_DEBUG_KMS("disable LVDS for eDP support\n"); return; } - gpio = PCH_GPIOC; } - intel_encoder = kzalloc(sizeof(struct intel_encoder) + - sizeof(struct intel_lvds_priv), GFP_KERNEL); - if (!intel_encoder) { + if (!intel_lvds_ddc_probe(dev, pin)) { + DRM_DEBUG_KMS("LVDS did not respond to DDC probe\n"); + return; + } + + intel_lvds = kzalloc(sizeof(struct intel_lvds), GFP_KERNEL); + if (!intel_lvds) { return; } intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL); if (!intel_connector) { - kfree(intel_encoder); + kfree(intel_lvds); return; } + if (!HAS_PCH_SPLIT(dev)) { + intel_lvds->pfit_control = I915_READ(PFIT_CONTROL); + } + + intel_encoder = &intel_lvds->base; + encoder = &intel_encoder->base; connector = &intel_connector->base; - encoder = &intel_encoder->enc; drm_connector_init(dev, &intel_connector->base, &intel_lvds_connector_funcs, DRM_MODE_CONNECTOR_LVDS); - drm_encoder_init(dev, &intel_encoder->enc, &intel_lvds_enc_funcs, + drm_encoder_init(dev, &intel_encoder->base, &intel_lvds_enc_funcs, DRM_MODE_ENCODER_LVDS); - drm_mode_connector_attach_encoder(&intel_connector->base, &intel_encoder->enc); + intel_connector_attach_encoder(intel_connector, intel_encoder); intel_encoder->type = INTEL_OUTPUT_LVDS; intel_encoder->clone_mask = (1 << INTEL_LVDS_CLONE_BIT); intel_encoder->crtc_mask = (1 << 1); - if (IS_I965G(dev)) - intel_encoder->crtc_mask |= (1 << 0); 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_priv = (struct intel_lvds_priv *)(intel_encoder + 1); - intel_encoder->dev_priv = lvds_priv; /* create the scaling mode property */ drm_mode_create_scaling_mode_property(dev); /* @@ -1007,7 +922,7 @@ void intel_lvds_init(struct drm_device *dev) drm_connector_attach_property(&intel_connector->base, dev->mode_config.scaling_mode_property, DRM_MODE_SCALE_ASPECT); - lvds_priv->fitting_mode = DRM_MODE_SCALE_ASPECT; + intel_lvds->fitting_mode = DRM_MODE_SCALE_ASPECT; /* * LVDS discovery: * 1) check for EDID on DDC @@ -1018,43 +933,41 @@ void intel_lvds_init(struct drm_device *dev) * if closed, act like it's not there for now */ - /* Set up the DDC bus. */ - intel_encoder->ddc_bus = intel_i2c_create(dev, gpio, "LVDSDDC_C"); - if (!intel_encoder->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. */ - dev_priv->lvds_edid_good = true; + intel_lvds->edid = drm_get_edid(connector, + &dev_priv->gmbus[pin].adapter); - if (!intel_ddc_get_modes(connector, intel_encoder->ddc_bus)) - dev_priv->lvds_edid_good = false; + if (!intel_lvds->edid) { + /* 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; + } 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 = + intel_lvds->fixed_mode = drm_mode_duplicate(dev, scan); - mutex_unlock(&dev->mode_config.mutex); - intel_find_lvds_downclock(dev, connector); + intel_find_lvds_downclock(dev, + intel_lvds->fixed_mode, + connector); 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 = + intel_lvds->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 |= + if (intel_lvds->fixed_mode) { + intel_lvds->fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; goto out; } @@ -1072,19 +985,19 @@ void intel_lvds_init(struct drm_device *dev) lvds = I915_READ(LVDS); pipe = (lvds & LVDS_PIPEB_SELECT) ? 1 : 0; - crtc = intel_get_crtc_from_pipe(dev, pipe); + crtc = intel_get_crtc_for_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 |= + intel_lvds->fixed_mode = intel_crtc_mode_get(dev, crtc); + if (intel_lvds->fixed_mode) { + intel_lvds->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) + if (!intel_lvds->fixed_mode) goto failed; out: @@ -1111,10 +1024,8 @@ out: failed: DRM_DEBUG_KMS("No LVDS modes found, disabling.\n"); - if (intel_encoder->ddc_bus) - intel_i2c_destroy(intel_encoder->ddc_bus); drm_connector_cleanup(connector); drm_encoder_cleanup(encoder); - kfree(intel_encoder); + kfree(intel_lvds); kfree(intel_connector); } |