diff options
author | Jani Nikula <jani.nikula@intel.com> | 2013-11-08 14:48:54 (GMT) |
---|---|---|
committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-11-12 23:07:43 (GMT) |
commit | 58c68779e48fa6d60b97fadc3dcac61a6c318c4c (patch) | |
tree | f75bc7730e8bf3b3490e5efe01c890bf638b33d0 /drivers/gpu/drm/i915/intel_panel.c | |
parent | db31af1d4e815e141295b0bdf8da3e77885001d5 (diff) | |
download | linux-58c68779e48fa6d60b97fadc3dcac61a6c318c4c.tar.xz |
drm/i915: make backlight info per-connector
Move from dev_priv to connector->panel. We still don't allow multiple
sysfs interfaces, though.
There should be no functional changes, except for a slight reordering of
connector backlight and sysfs destroy calls. (This change happens now
that the backlight device is actually per-connector, even though the
destroy calls became per-connector earlier.)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Imre Deak <imre.deak@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 | 85 |
1 files changed, 47 insertions, 38 deletions
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index a0d13d3..0a4aeaf 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -346,7 +346,7 @@ 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; - WARN_ON_SMP(!spin_is_locked(&dev_priv->backlight.lock)); + WARN_ON_SMP(!spin_is_locked(&dev_priv->backlight_lock)); /* Restore the CTL value if it lost, e.g. GPU reset */ @@ -449,7 +449,7 @@ static u32 intel_panel_get_backlight(struct drm_device *dev, unsigned long flags; int reg; - spin_lock_irqsave(&dev_priv->backlight.lock, 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; @@ -473,7 +473,7 @@ static u32 intel_panel_get_backlight(struct drm_device *dev, val = intel_panel_compute_brightness(dev, pipe, val); - spin_unlock_irqrestore(&dev_priv->backlight.lock, flags); + spin_unlock_irqrestore(&dev_priv->backlight_lock, flags); DRM_DEBUG_DRIVER("get backlight PWM = %d\n", val); return val; @@ -530,6 +530,7 @@ void intel_panel_set_backlight(struct intel_connector *connector, u32 level, { struct drm_device *dev = connector->base.dev; struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_panel *panel = &connector->panel; enum pipe pipe = intel_get_pipe_from_connector(connector); u32 freq; unsigned long flags; @@ -537,7 +538,7 @@ void intel_panel_set_backlight(struct intel_connector *connector, u32 level, if (pipe == INVALID_PIPE) return; - spin_lock_irqsave(&dev_priv->backlight.lock, flags); + spin_lock_irqsave(&dev_priv->backlight_lock, flags); freq = intel_panel_get_max_backlight(dev, pipe); if (!freq) { @@ -551,20 +552,21 @@ void intel_panel_set_backlight(struct intel_connector *connector, u32 level, else level = freq / max * level; - dev_priv->backlight.level = level; - if (dev_priv->backlight.device) - dev_priv->backlight.device->props.brightness = level; + panel->backlight.level = level; + if (panel->backlight.device) + panel->backlight.device->props.brightness = level; - if (dev_priv->backlight.enabled) + if (panel->backlight.enabled) intel_panel_actually_set_backlight(dev, pipe, level); out: - spin_unlock_irqrestore(&dev_priv->backlight.lock, flags); + spin_unlock_irqrestore(&dev_priv->backlight_lock, flags); } 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; + struct intel_panel *panel = &connector->panel; enum pipe pipe = intel_get_pipe_from_connector(connector); unsigned long flags; @@ -582,9 +584,9 @@ void intel_panel_disable_backlight(struct intel_connector *connector) return; } - spin_lock_irqsave(&dev_priv->backlight.lock, flags); + spin_lock_irqsave(&dev_priv->backlight_lock, flags); - dev_priv->backlight.enabled = false; + panel->backlight.enabled = false; intel_panel_actually_set_backlight(dev, pipe, 0); if (INTEL_INFO(dev)->gen >= 4) { @@ -606,13 +608,14 @@ void intel_panel_disable_backlight(struct intel_connector *connector) } } - spin_unlock_irqrestore(&dev_priv->backlight.lock, flags); + spin_unlock_irqrestore(&dev_priv->backlight_lock, flags); } 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; + struct intel_panel *panel = &connector->panel; enum pipe pipe = intel_get_pipe_from_connector(connector); enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv, pipe); @@ -623,14 +626,14 @@ void intel_panel_enable_backlight(struct intel_connector *connector) DRM_DEBUG_KMS("pipe %c\n", pipe_name(pipe)); - spin_lock_irqsave(&dev_priv->backlight.lock, 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, - pipe); - if (dev_priv->backlight.device) - dev_priv->backlight.device->props.brightness = - dev_priv->backlight.level; + if (panel->backlight.level == 0) { + panel->backlight.level = intel_panel_get_max_backlight(dev, + pipe); + if (panel->backlight.device) + panel->backlight.device->props.brightness = + panel->backlight.level; } if (INTEL_INFO(dev)->gen >= 4) { @@ -680,11 +683,11 @@ set_level: * BLC_PWM_CPU_CTL may be cleared to zero automatically when these * registers are set. */ - dev_priv->backlight.enabled = true; + panel->backlight.enabled = true; intel_panel_actually_set_backlight(dev, pipe, - dev_priv->backlight.level); + panel->backlight.level); - spin_unlock_irqrestore(&dev_priv->backlight.lock, flags); + spin_unlock_irqrestore(&dev_priv->backlight_lock, flags); } /* FIXME: use VBT vals to init PWM_CTL and PWM_CTL2 correctly */ @@ -770,34 +773,40 @@ static int intel_backlight_device_register(struct intel_connector *connector) { struct drm_device *dev = connector->base.dev; struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_panel *panel = &connector->panel; struct backlight_properties props; unsigned long flags; - if (WARN_ON(dev_priv->backlight.device)) + if (WARN_ON(panel->backlight.device)) return -ENODEV; memset(&props, 0, sizeof(props)); props.type = BACKLIGHT_RAW; - props.brightness = dev_priv->backlight.level; + props.brightness = panel->backlight.level; - spin_lock_irqsave(&dev_priv->backlight.lock, flags); + spin_lock_irqsave(&dev_priv->backlight_lock, flags); props.max_brightness = intel_panel_get_max_backlight(dev, 0); - spin_unlock_irqrestore(&dev_priv->backlight.lock, flags); + 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 = + + /* + * Note: using the same name independent of the connector prevents + * registration of multiple backlight devices in the driver. + */ + panel->backlight.device = backlight_device_register("intel_backlight", connector->base.kdev, connector, &intel_backlight_device_ops, &props); - if (IS_ERR(dev_priv->backlight.device)) { + if (IS_ERR(panel->backlight.device)) { DRM_ERROR("Failed to register backlight: %ld\n", - PTR_ERR(dev_priv->backlight.device)); - dev_priv->backlight.device = NULL; + PTR_ERR(panel->backlight.device)); + panel->backlight.device = NULL; return -ENODEV; } return 0; @@ -805,11 +814,11 @@ static int intel_backlight_device_register(struct intel_connector *connector) static void intel_backlight_device_unregister(struct intel_connector *connector) { - struct drm_device *dev = connector->base.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; + struct intel_panel *panel = &connector->panel; + + if (panel->backlight.device) { + backlight_device_unregister(panel->backlight.device); + panel->backlight.device = NULL; } } #else /* CONFIG_BACKLIGHT_CLASS_DEVICE */ @@ -825,13 +834,13 @@ static void intel_backlight_device_unregister(struct intel_connector *connector) 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 intel_connector *intel_connector = to_intel_connector(connector); + struct intel_panel *panel = &intel_connector->panel; intel_panel_init_backlight_regs(dev); - dev_priv->backlight.level = intel_panel_get_backlight(dev, 0); - dev_priv->backlight.enabled = dev_priv->backlight.level != 0; + panel->backlight.level = intel_panel_get_backlight(dev, 0); + panel->backlight.enabled = panel->backlight.level != 0; intel_backlight_device_register(intel_connector); |