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>
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index de15186..17ddcb0 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -341,7 +341,7 @@
/* 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 @@
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 @@
"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 @@
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 @@
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 @@
}
}
- 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_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 @@
}
/* 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 @@
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 @@
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 @@
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 @@
* 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 @@
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 @@
#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 @@
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 @@
}
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)) {