/* 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;
- 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 */
val = dev_priv->regfile.saveBLC_PWM_CTL2;
I915_WRITE(BLC_PWM_PCH_CTL2, val);
}
+ } else if (IS_VALLEYVIEW(dev)) {
+ val = I915_READ(VLV_BLC_PWM_CTL(pipe));
+ if (dev_priv->regfile.saveBLC_PWM_CTL == 0) {
+ dev_priv->regfile.saveBLC_PWM_CTL = val;
+ dev_priv->regfile.saveBLC_PWM_CTL2 =
+ I915_READ(VLV_BLC_PWM_CTL2(pipe));
+ } else if (val == 0) {
+ val = dev_priv->regfile.saveBLC_PWM_CTL;
+ I915_WRITE(VLV_BLC_PWM_CTL(pipe), val);
+ I915_WRITE(VLV_BLC_PWM_CTL2(pipe),
+ dev_priv->regfile.saveBLC_PWM_CTL2);
+ }
+
+ if (!val)
+ val = 0x0f42ffff;
} else {
val = I915_READ(BLC_PWM_CTL);
if (dev_priv->regfile.saveBLC_PWM_CTL == 0) {
I915_WRITE(BLC_PWM_CTL2,
dev_priv->regfile.saveBLC_PWM_CTL2);
}
-
- if (IS_VALLEYVIEW(dev) && !val)
- val = 0x0f42ffff;
}
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;
"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;
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;
}
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;
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;
} else {
- val = I915_READ(BLC_PWM_CTL) & BACKLIGHT_DUTY_CYCLE_MASK;
+ if (IS_VALLEYVIEW(dev))
+ reg = VLV_BLC_PWM_CTL(pipe);
+ else
+ reg = BLC_PWM_CTL;
+
+ val = I915_READ(reg) & BACKLIGHT_DUTY_CYCLE_MASK;
if (INTEL_INFO(dev)->gen < 4)
val >>= 1;
}
}
- val = intel_panel_compute_brightness(dev, val);
+ 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;
}
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;
+ int reg;
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 */
pci_write_config_byte(dev->pdev, PCI_LBPC, lbpc);
}
- tmp = I915_READ(BLC_PWM_CTL);
+ if (IS_VALLEYVIEW(dev))
+ reg = VLV_BLC_PWM_CTL(pipe);
+ else
+ reg = BLC_PWM_CTL;
+
+ tmp = I915_READ(reg);
if (INTEL_INFO(dev)->gen < 4)
level <<= 1;
tmp &= ~BACKLIGHT_DUTY_CYCLE_MASK;
- I915_WRITE(BLC_PWM_CTL, tmp | level);
+ I915_WRITE(reg, tmp | level);
}
/* 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;
+ struct intel_panel *panel = &connector->panel;
+ enum pipe pipe = intel_get_pipe_from_connector(connector);
u32 freq;
unsigned long flags;
- spin_lock_irqsave(&dev_priv->backlight.lock, 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;
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)
- intel_panel_actually_set_backlight(dev, level);
+ 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 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;
+ struct intel_panel *panel = &connector->panel;
+ 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
return;
}
- spin_lock_irqsave(&dev_priv->backlight.lock, flags);
+ spin_lock_irqsave(&dev_priv->backlight_lock, flags);
- dev_priv->backlight.enabled = false;
- intel_panel_actually_set_backlight(dev, 0);
+ panel->backlight.enabled = false;
+ intel_panel_actually_set_backlight(dev, pipe, 0);
if (INTEL_INFO(dev)->gen >= 4) {
uint32_t reg, tmp;
- reg = HAS_PCH_SPLIT(dev) ? BLC_PWM_CPU_CTL2 : BLC_PWM_CTL2;
+ if (HAS_PCH_SPLIT(dev))
+ reg = BLC_PWM_CPU_CTL2;
+ else if (IS_VALLEYVIEW(dev))
+ reg = VLV_BLC_PWM_CTL2(pipe);
+ else
+ reg = BLC_PWM_CTL2;
I915_WRITE(reg, I915_READ(reg) & ~BLM_PWM_ENABLE);
}
}
- spin_unlock_irqrestore(&dev_priv->backlight.lock, flags);
+ 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;
+ 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);
unsigned long flags;
- spin_lock_irqsave(&dev_priv->backlight.lock, 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);
- 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) {
uint32_t reg, tmp;
- reg = HAS_PCH_SPLIT(dev) ? BLC_PWM_CPU_CTL2 : BLC_PWM_CTL2;
-
+ if (HAS_PCH_SPLIT(dev))
+ reg = BLC_PWM_CPU_CTL2;
+ else if (IS_VALLEYVIEW(dev))
+ reg = VLV_BLC_PWM_CTL2(pipe);
+ else
+ reg = BLC_PWM_CTL2;
tmp = I915_READ(reg);
* BLC_PWM_CPU_CTL may be cleared to zero automatically when these
* registers are set.
*/
- dev_priv->backlight.enabled = true;
- intel_panel_actually_set_backlight(dev, dev_priv->backlight.level);
+ panel->backlight.enabled = true;
+ intel_panel_actually_set_backlight(dev, pipe,
+ 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 */
struct drm_i915_private *dev_priv = dev->dev_private;
if (IS_VALLEYVIEW(dev)) {
- u32 cur_val = I915_READ(BLC_PWM_CTL) &
- BACKLIGHT_DUTY_CYCLE_MASK;
- I915_WRITE(BLC_PWM_CTL, (0xf42 << 16) | cur_val);
- }
-}
+ enum pipe pipe;
-static void intel_panel_init_backlight(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ for_each_pipe(pipe) {
+ u32 cur_val = I915_READ(VLV_BLC_PWM_CTL(pipe));
- intel_panel_init_backlight_regs(dev);
+ /* Skip if the modulation freq is already set */
+ if (cur_val & ~BACKLIGHT_DUTY_CYCLE_MASK)
+ continue;
- dev_priv->backlight.level = intel_panel_get_backlight(dev);
- dev_priv->backlight.enabled = dev_priv->backlight.level != 0;
+ cur_val &= BACKLIGHT_DUTY_CYCLE_MASK;
+ I915_WRITE(VLV_BLC_PWM_CTL(pipe), (0xf42 << 16) |
+ cur_val);
+ }
+ }
}
enum drm_connector_status
}
#if IS_ENABLED(CONFIG_BACKLIGHT_CLASS_DEVICE)
-static int intel_panel_update_status(struct backlight_device *bd)
+static int intel_backlight_device_update_status(struct backlight_device *bd)
{
- struct drm_device *dev = bl_get_data(bd);
- intel_panel_set_backlight(dev, bd->props.brightness,
+ 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(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)
+static int intel_backlight_device_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 = {
- .update_status = intel_panel_update_status,
- .get_brightness = intel_panel_get_brightness,
+static const struct backlight_ops intel_backlight_device_ops = {
+ .update_status = intel_backlight_device_update_status,
+ .get_brightness = intel_backlight_device_get_brightness,
};
-int intel_panel_setup_backlight(struct drm_connector *connector)
+static int intel_backlight_device_register(struct intel_connector *connector)
{
- struct drm_device *dev = connector->dev;
+ 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;
- intel_panel_init_backlight(dev);
-
- 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);
- props.max_brightness = intel_panel_get_max_backlight(dev);
- spin_unlock_irqrestore(&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);
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->kdev, dev,
- &intel_panel_bl_ops, &props);
+ 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;
}
-void intel_panel_destroy_backlight(struct drm_device *dev)
+static void intel_backlight_device_unregister(struct intel_connector *connector)
{
- 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
+#else /* CONFIG_BACKLIGHT_CLASS_DEVICE */
+static int intel_backlight_device_register(struct intel_connector *connector)
+{
+ return 0;
+}
+static void intel_backlight_device_unregister(struct intel_connector *connector)
+{
+}
+#endif /* CONFIG_BACKLIGHT_CLASS_DEVICE */
+
int intel_panel_setup_backlight(struct drm_connector *connector)
{
- intel_panel_init_backlight(connector->dev);
+ struct drm_device *dev = connector->dev;
+ struct intel_connector *intel_connector = to_intel_connector(connector);
+ struct intel_panel *panel = &intel_connector->panel;
+
+ intel_panel_init_backlight_regs(dev);
+
+ panel->backlight.level = intel_panel_get_backlight(dev, 0);
+ panel->backlight.enabled = panel->backlight.level != 0;
+
+ intel_backlight_device_register(intel_connector);
+
+ panel->backlight.present = true;
+
return 0;
}
-void intel_panel_destroy_backlight(struct drm_device *dev)
+void intel_panel_destroy_backlight(struct drm_connector *connector)
{
- return;
+ struct intel_connector *intel_connector = to_intel_connector(connector);
+ struct intel_panel *panel = &intel_connector->panel;
+
+ panel->backlight.present = false;
+ intel_backlight_device_unregister(intel_connector);
}
-#endif
int intel_panel_init(struct intel_panel *panel,
struct drm_display_mode *fixed_mode)
projects / ~andy / linux / blobdiff