From 752aa88a1e784c22d514db3b440e49427b58259e Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Thu, 31 Oct 2013 18:55:49 +0200 Subject: [PATCH] drm/i915: make backlight functions take a connector On VLV/BYT, backlight controls a per-pipe, so when adjusting the backlight we need to pass the correct info. So make the externally visible backlight functions take a connector argument, which can be used internally to figure out the pipe backlight to adjust. v2: make connector pipe lookup check for NULL crtc (Jani) fixup connector check in ASLE code (Jani) v3: make sure we take the mode config lock around lookups (Daniel) v4: fix double unlock in panel_get_brightness (Daniel) v5: push ASLE work into a work queue (Daniel) v6: separate ASLE work to a prep patch, rebase (Jani) Signed-off-by: Jesse Barnes Signed-off-by: Jani Nikula Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_drv.h | 1 + drivers/gpu/drm/i915/intel_display.c | 12 ++++ drivers/gpu/drm/i915/intel_dp.c | 5 +- drivers/gpu/drm/i915/intel_drv.h | 8 ++- drivers/gpu/drm/i915/intel_lvds.c | 9 ++- drivers/gpu/drm/i915/intel_opregion.c | 38 +++++++++++- drivers/gpu/drm/i915/intel_panel.c | 86 +++++++++++++++++++-------- 7 files changed, 122 insertions(+), 37 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 8b37b3531c27..b2023d7c1d6b 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -54,6 +54,7 @@ #define DRIVER_DATE "20080730" enum pipe { + INVALID_PIPE = -1, PIPE_A = 0, PIPE_B, PIPE_C, diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index e31a740e1663..73f036bddb6f 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -9874,6 +9874,18 @@ static void intel_crtc_init(struct drm_device *dev, int pipe) drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs); } +enum pipe intel_get_pipe_from_connector(struct intel_connector *connector) +{ + struct drm_encoder *encoder = connector->base.encoder; + + WARN_ON(!mutex_is_locked(&connector->base.dev->mode_config.mutex)); + + if (!encoder) + return INVALID_PIPE; + + return to_intel_crtc(encoder->crtc)->pipe; +} + int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data, struct drm_file *file) { diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index d58fbb6b5ffd..4609eedf52aa 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1249,7 +1249,6 @@ void ironlake_edp_backlight_on(struct intel_dp *intel_dp) struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); struct drm_device *dev = intel_dig_port->base.base.dev; struct drm_i915_private *dev_priv = dev->dev_private; - int pipe = to_intel_crtc(intel_dig_port->base.base.crtc)->pipe; u32 pp; u32 pp_ctrl_reg; @@ -1272,7 +1271,7 @@ void ironlake_edp_backlight_on(struct intel_dp *intel_dp) I915_WRITE(pp_ctrl_reg, pp); POSTING_READ(pp_ctrl_reg); - intel_panel_enable_backlight(dev, pipe); + intel_panel_enable_backlight(intel_dp->attached_connector); } void ironlake_edp_backlight_off(struct intel_dp *intel_dp) @@ -1285,7 +1284,7 @@ void ironlake_edp_backlight_off(struct intel_dp *intel_dp) if (!is_edp(intel_dp)) return; - intel_panel_disable_backlight(dev); + intel_panel_disable_backlight(intel_dp->attached_connector); DRM_DEBUG_KMS("\n"); pp = ironlake_get_pp_control(intel_dp); diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 9d2624fd92c2..1e49aa8f5377 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -630,6 +630,7 @@ void intel_connector_attach_encoder(struct intel_connector *connector, struct drm_encoder *intel_best_encoder(struct drm_connector *connector); struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev, struct drm_crtc *crtc); +enum pipe intel_get_pipe_from_connector(struct intel_connector *connector); int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data, struct drm_file *file_priv); enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv, @@ -802,10 +803,11 @@ void intel_pch_panel_fitting(struct intel_crtc *crtc, void intel_gmch_panel_fitting(struct intel_crtc *crtc, struct intel_crtc_config *pipe_config, int fitting_mode); -void intel_panel_set_backlight(struct drm_device *dev, u32 level, u32 max); +void intel_panel_set_backlight(struct intel_connector *connector, u32 level, + u32 max); int intel_panel_setup_backlight(struct drm_connector *connector); -void intel_panel_enable_backlight(struct drm_device *dev, enum pipe pipe); -void intel_panel_disable_backlight(struct drm_device *dev); +void intel_panel_enable_backlight(struct intel_connector *connector); +void intel_panel_disable_backlight(struct intel_connector *connector); void intel_panel_destroy_backlight(struct drm_device *dev); enum drm_connector_status intel_panel_detect(struct drm_device *dev); diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c index b0ef55833087..c3b4da7895ed 100644 --- a/drivers/gpu/drm/i915/intel_lvds.c +++ b/drivers/gpu/drm/i915/intel_lvds.c @@ -206,7 +206,8 @@ static void intel_enable_lvds(struct intel_encoder *encoder) { struct drm_device *dev = encoder->base.dev; struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base); - struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); + struct intel_connector *intel_connector = + &lvds_encoder->attached_connector->base; struct drm_i915_private *dev_priv = dev->dev_private; u32 ctl_reg, stat_reg; @@ -225,13 +226,15 @@ static void intel_enable_lvds(struct intel_encoder *encoder) if (wait_for((I915_READ(stat_reg) & PP_ON) != 0, 1000)) DRM_ERROR("timed out waiting for panel to power on\n"); - intel_panel_enable_backlight(dev, intel_crtc->pipe); + intel_panel_enable_backlight(intel_connector); } static void intel_disable_lvds(struct intel_encoder *encoder) { struct drm_device *dev = encoder->base.dev; struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base); + struct intel_connector *intel_connector = + &lvds_encoder->attached_connector->base; struct drm_i915_private *dev_priv = dev->dev_private; u32 ctl_reg, stat_reg; @@ -243,7 +246,7 @@ static void intel_disable_lvds(struct intel_encoder *encoder) stat_reg = PP_STATUS; } - intel_panel_disable_backlight(dev); + intel_panel_disable_backlight(intel_connector); I915_WRITE(ctl_reg, I915_READ(ctl_reg) & ~POWER_TARGET_ON); if (wait_for((I915_READ(stat_reg) & PP_ON) == 0, 1000)) diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c index 892d520175d8..91b68dca0641 100644 --- a/drivers/gpu/drm/i915/intel_opregion.c +++ b/drivers/gpu/drm/i915/intel_opregion.c @@ -396,7 +396,13 @@ int intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state) static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) { struct drm_i915_private *dev_priv = dev->dev_private; + struct drm_encoder *encoder; + struct drm_connector *connector; + struct intel_connector *intel_connector = NULL; + struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[0]; struct opregion_asle __iomem *asle = dev_priv->opregion.asle; + u32 ret = 0; + bool found = false; DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp); @@ -407,11 +413,39 @@ static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) if (bclp > 255) return ASLC_BACKLIGHT_FAILED; + mutex_lock(&dev->mode_config.mutex); + /* + * Could match the OpRegion connector here instead, but we'd also need + * to verify the connector could handle a backlight call. + */ + list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) + if (encoder->crtc == crtc) { + found = true; + break; + } + + if (!found) { + ret = ASLC_BACKLIGHT_FAILED; + goto out; + } + + list_for_each_entry(connector, &dev->mode_config.connector_list, head) + if (connector->encoder == encoder) + intel_connector = to_intel_connector(connector); + + if (!intel_connector) { + ret = ASLC_BACKLIGHT_FAILED; + goto out; + } + DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp); - intel_panel_set_backlight(dev, bclp, 255); + intel_panel_set_backlight(intel_connector, bclp, 255); iowrite32(DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID, &asle->cblv); - return 0; +out: + mutex_unlock(&dev->mode_config.mutex); + + return ret; } static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi) diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index de1518614827..17ddcb00bd26 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -341,7 +341,7 @@ static int is_backlight_combination_mode(struct drm_device *dev) /* 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) +static u32 i915_read_blc_pwm_ctl(struct drm_device *dev, enum pipe pipe) { struct drm_i915_private *dev_priv = dev->dev_private; u32 val; @@ -380,11 +380,12 @@ static u32 i915_read_blc_pwm_ctl(struct drm_device *dev) return val; } -static u32 intel_panel_get_max_backlight(struct drm_device *dev) +static u32 intel_panel_get_max_backlight(struct drm_device *dev, + enum pipe pipe) { u32 max; - max = i915_read_blc_pwm_ctl(dev); + max = i915_read_blc_pwm_ctl(dev, pipe); if (HAS_PCH_SPLIT(dev)) { max >>= 16; @@ -410,7 +411,8 @@ MODULE_PARM_DESC(invert_brightness, "Invert backlight brightness " "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) +static u32 intel_panel_compute_brightness(struct drm_device *dev, + enum pipe pipe, u32 val) { struct drm_i915_private *dev_priv = dev->dev_private; @@ -419,7 +421,7 @@ static u32 intel_panel_compute_brightness(struct drm_device *dev, u32 val) if (i915_panel_invert_brightness > 0 || dev_priv->quirks & QUIRK_INVERT_BRIGHTNESS) { - u32 max = intel_panel_get_max_backlight(dev); + u32 max = intel_panel_get_max_backlight(dev, pipe); if (max) return max - val; } @@ -427,7 +429,8 @@ static u32 intel_panel_compute_brightness(struct drm_device *dev, u32 val) return val; } -static u32 intel_panel_get_backlight(struct drm_device *dev) +static u32 intel_panel_get_backlight(struct drm_device *dev, + enum pipe pipe) { struct drm_i915_private *dev_priv = dev->dev_private; u32 val; @@ -450,7 +453,7 @@ static u32 intel_panel_get_backlight(struct drm_device *dev) } } - val = intel_panel_compute_brightness(dev, val); + val = intel_panel_compute_brightness(dev, pipe, val); spin_unlock_irqrestore(&dev_priv->backlight.lock, flags); @@ -466,19 +469,19 @@ static void intel_pch_panel_set_backlight(struct drm_device *dev, u32 level) } static void intel_panel_actually_set_backlight(struct drm_device *dev, - u32 level) + enum pipe pipe, 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); + level = intel_panel_compute_brightness(dev, pipe, 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); + u32 max = intel_panel_get_max_backlight(dev, pipe); u8 lbpc; /* we're screwed, but keep behaviour backwards compatible */ @@ -498,15 +501,21 @@ static void intel_panel_actually_set_backlight(struct drm_device *dev, } /* set backlight brightness to level in range [0..max] */ -void intel_panel_set_backlight(struct drm_device *dev, u32 level, u32 max) +void intel_panel_set_backlight(struct intel_connector *connector, u32 level, + u32 max) { + struct drm_device *dev = connector->base.dev; struct drm_i915_private *dev_priv = dev->dev_private; + enum pipe pipe = intel_get_pipe_from_connector(connector); u32 freq; unsigned long flags; + if (pipe == INVALID_PIPE) + return; + spin_lock_irqsave(&dev_priv->backlight.lock, flags); - freq = intel_panel_get_max_backlight(dev); + freq = intel_panel_get_max_backlight(dev, pipe); if (!freq) { /* we are screwed, bail out */ goto out; @@ -523,16 +532,21 @@ void intel_panel_set_backlight(struct drm_device *dev, u32 level, u32 max) dev_priv->backlight.device->props.brightness = level; if (dev_priv->backlight.enabled) - intel_panel_actually_set_backlight(dev, level); + intel_panel_actually_set_backlight(dev, pipe, level); out: spin_unlock_irqrestore(&dev_priv->backlight.lock, flags); } -void intel_panel_disable_backlight(struct drm_device *dev) +void intel_panel_disable_backlight(struct intel_connector *connector) { + struct drm_device *dev = connector->base.dev; struct drm_i915_private *dev_priv = dev->dev_private; + enum pipe pipe = intel_get_pipe_from_connector(connector); unsigned long flags; + if (pipe == INVALID_PIPE) + return; + /* * Do not disable backlight on the vgaswitcheroo path. When switching * away from i915, the other client may depend on i915 to handle the @@ -547,7 +561,7 @@ void intel_panel_disable_backlight(struct drm_device *dev) spin_lock_irqsave(&dev_priv->backlight.lock, flags); dev_priv->backlight.enabled = false; - intel_panel_actually_set_backlight(dev, 0); + intel_panel_actually_set_backlight(dev, pipe, 0); if (INTEL_INFO(dev)->gen >= 4) { uint32_t reg, tmp; @@ -566,20 +580,25 @@ void intel_panel_disable_backlight(struct drm_device *dev) spin_unlock_irqrestore(&dev_priv->backlight.lock, flags); } -void intel_panel_enable_backlight(struct drm_device *dev, - enum pipe pipe) +void intel_panel_enable_backlight(struct intel_connector *connector) { + struct drm_device *dev = connector->base.dev; struct drm_i915_private *dev_priv = dev->dev_private; + enum pipe pipe = intel_get_pipe_from_connector(connector); enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv, pipe); unsigned long flags; + if (pipe == INVALID_PIPE) + return; + DRM_DEBUG_KMS("pipe %c\n", pipe_name(pipe)); spin_lock_irqsave(&dev_priv->backlight.lock, flags); if (dev_priv->backlight.level == 0) { - dev_priv->backlight.level = intel_panel_get_max_backlight(dev); + dev_priv->backlight.level = intel_panel_get_max_backlight(dev, + pipe); if (dev_priv->backlight.device) dev_priv->backlight.device->props.brightness = dev_priv->backlight.level; @@ -629,7 +648,8 @@ set_level: * registers are set. */ dev_priv->backlight.enabled = true; - intel_panel_actually_set_backlight(dev, dev_priv->backlight.level); + intel_panel_actually_set_backlight(dev, pipe, + dev_priv->backlight.level); spin_unlock_irqrestore(&dev_priv->backlight.lock, flags); } @@ -652,7 +672,7 @@ static void intel_panel_init_backlight(struct drm_device *dev) intel_panel_init_backlight_regs(dev); - dev_priv->backlight.level = intel_panel_get_backlight(dev); + dev_priv->backlight.level = intel_panel_get_backlight(dev, 0); dev_priv->backlight.enabled = dev_priv->backlight.level != 0; } @@ -681,18 +701,31 @@ intel_panel_detect(struct drm_device *dev) #if IS_ENABLED(CONFIG_BACKLIGHT_CLASS_DEVICE) static int intel_panel_update_status(struct backlight_device *bd) { - struct drm_device *dev = bl_get_data(bd); + struct intel_connector *connector = bl_get_data(bd); + struct drm_device *dev = connector->base.dev; + + mutex_lock(&dev->mode_config.mutex); DRM_DEBUG_KMS("updating intel_backlight, brightness=%d/%d\n", bd->props.brightness, bd->props.max_brightness); - intel_panel_set_backlight(dev, bd->props.brightness, + intel_panel_set_backlight(connector, bd->props.brightness, bd->props.max_brightness); + mutex_unlock(&dev->mode_config.mutex); 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); + struct intel_connector *connector = bl_get_data(bd); + struct drm_device *dev = connector->base.dev; + enum pipe pipe; + + mutex_lock(&dev->mode_config.mutex); + pipe = intel_get_pipe_from_connector(connector); + mutex_unlock(&dev->mode_config.mutex); + if (pipe == INVALID_PIPE) + return 0; + + return intel_panel_get_backlight(connector->base.dev, pipe); } static const struct backlight_ops intel_panel_bl_ops = { @@ -717,7 +750,7 @@ int intel_panel_setup_backlight(struct drm_connector *connector) props.brightness = dev_priv->backlight.level; spin_lock_irqsave(&dev_priv->backlight.lock, flags); - props.max_brightness = intel_panel_get_max_backlight(dev); + props.max_brightness = intel_panel_get_max_backlight(dev, 0); spin_unlock_irqrestore(&dev_priv->backlight.lock, flags); if (props.max_brightness == 0) { @@ -726,7 +759,8 @@ int intel_panel_setup_backlight(struct drm_connector *connector) } dev_priv->backlight.device = backlight_device_register("intel_backlight", - &connector->kdev, dev, + &connector->kdev, + to_intel_connector(connector), &intel_panel_bl_ops, &props); if (IS_ERR(dev_priv->backlight.device)) { -- 2.20.1