diff options
author | Jesse Barnes <jbarnes@virtuousgeek.org> | 2013-10-31 20:55:49 +0400 |
---|---|---|
committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-11-06 20:56:28 +0400 |
commit | 752aa88a1e784c22d514db3b440e49427b58259e (patch) | |
tree | 755926ad23793496c41b601a9cbb42950a57416e /drivers/gpu/drm/i915/intel_panel.c | |
parent | 91a60f20712179e56b7a6c3d332a5f6f9a54aa11 (diff) | |
download | linux-752aa88a1e784c22d514db3b440e49427b58259e.tar.xz |
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 <jbarnes@virtuousgeek.org>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_panel.c')
-rw-r--r-- | drivers/gpu/drm/i915/intel_panel.c | 86 |
1 files changed, 60 insertions, 26 deletions
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)) { |