[Intel-gfx] [PATCH 02/13] drm/i915: make backlight info per-connector
Jani Nikula
jani.nikula at intel.com
Fri Nov 8 15:48:54 CET 2013
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 at intel.com>
---
drivers/gpu/drm/i915/i915_dma.c | 2 +-
drivers/gpu/drm/i915/i915_drv.h | 9 +---
drivers/gpu/drm/i915/i915_suspend.c | 8 ++--
drivers/gpu/drm/i915/intel_drv.h | 7 +++
drivers/gpu/drm/i915/intel_panel.c | 85 +++++++++++++++++++----------------
5 files changed, 61 insertions(+), 50 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 0cab2d0..9a2a175 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1486,7 +1486,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
spin_lock_init(&dev_priv->irq_lock);
spin_lock_init(&dev_priv->gpu_error.lock);
- spin_lock_init(&dev_priv->backlight.lock);
+ spin_lock_init(&dev_priv->backlight_lock);
spin_lock_init(&dev_priv->uncore.lock);
spin_lock_init(&dev_priv->mm.object_stat_lock);
mutex_init(&dev_priv->dpio_lock);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 67117e7..0517d47 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1368,13 +1368,8 @@ typedef struct drm_i915_private {
struct intel_overlay *overlay;
unsigned int sprite_scaling_enabled;
- /* backlight */
- struct {
- int level;
- bool enabled;
- spinlock_t lock; /* bl registers and the above bl fields */
- struct backlight_device *device;
- } backlight;
+ /* backlight registers and fields in struct intel_panel */
+ spinlock_t backlight_lock;
/* LVDS info */
bool no_aux_handshake;
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index 98790c7..eadf8e1 100644
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -203,7 +203,7 @@ static void i915_save_display(struct drm_device *dev)
if (!drm_core_check_feature(dev, DRIVER_MODESET))
i915_save_display_reg(dev);
- spin_lock_irqsave(&dev_priv->backlight.lock, flags);
+ spin_lock_irqsave(&dev_priv->backlight_lock, flags);
/* LVDS state */
if (HAS_PCH_SPLIT(dev)) {
@@ -241,7 +241,7 @@ static void i915_save_display(struct drm_device *dev)
dev_priv->regfile.saveLVDS = I915_READ(LVDS);
}
- spin_unlock_irqrestore(&dev_priv->backlight.lock, flags);
+ spin_unlock_irqrestore(&dev_priv->backlight_lock, flags);
if (!IS_I830(dev) && !IS_845G(dev) && !HAS_PCH_SPLIT(dev))
dev_priv->regfile.savePFIT_CONTROL = I915_READ(PFIT_CONTROL);
@@ -287,7 +287,7 @@ static void i915_restore_display(struct drm_device *dev)
if (!drm_core_check_feature(dev, DRIVER_MODESET))
i915_restore_display_reg(dev);
- spin_lock_irqsave(&dev_priv->backlight.lock, flags);
+ spin_lock_irqsave(&dev_priv->backlight_lock, flags);
/* LVDS state */
if (INTEL_INFO(dev)->gen >= 4 && !HAS_PCH_SPLIT(dev))
@@ -341,7 +341,7 @@ static void i915_restore_display(struct drm_device *dev)
I915_WRITE(PP_CONTROL, dev_priv->regfile.savePP_CONTROL);
}
- spin_unlock_irqrestore(&dev_priv->backlight.lock, flags);
+ spin_unlock_irqrestore(&dev_priv->backlight_lock, flags);
/* only restore FBC info on the platform that supports FBC*/
intel_disable_fbc(dev);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 1625580..a0d8dda 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -156,6 +156,13 @@ struct intel_encoder {
struct intel_panel {
struct drm_display_mode *fixed_mode;
int fitting_mode;
+
+ /* backlight */
+ struct {
+ u32 level;
+ bool enabled;
+ struct backlight_device *device;
+ } backlight;
};
struct intel_connector {
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);
--
1.7.10.4
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