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path: root/drivers/gpu/drm/i915/intel_lvds.c
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Diffstat (limited to 'drivers/gpu/drm/i915/intel_lvds.c')
-rw-r--r--drivers/gpu/drm/i915/intel_lvds.c90
1 files changed, 43 insertions, 47 deletions
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index b28f7bd9f88..31da77f5c05 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -72,14 +72,16 @@ static void intel_lvds_enable(struct intel_lvds *intel_lvds)
{
struct drm_device *dev = intel_lvds->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- u32 ctl_reg, lvds_reg;
+ u32 ctl_reg, lvds_reg, stat_reg;
if (HAS_PCH_SPLIT(dev)) {
ctl_reg = PCH_PP_CONTROL;
lvds_reg = PCH_LVDS;
+ stat_reg = PCH_PP_STATUS;
} else {
ctl_reg = PP_CONTROL;
lvds_reg = LVDS;
+ stat_reg = PP_STATUS;
}
I915_WRITE(lvds_reg, I915_READ(lvds_reg) | LVDS_PORT_EN);
@@ -94,17 +96,16 @@ static void intel_lvds_enable(struct intel_lvds *intel_lvds)
DRM_DEBUG_KMS("applying panel-fitter: %x, %x\n",
intel_lvds->pfit_control,
intel_lvds->pfit_pgm_ratios);
- if (wait_for((I915_READ(PP_STATUS) & PP_ON) == 0, 1000)) {
- DRM_ERROR("timed out waiting for panel to power off\n");
- } else {
- I915_WRITE(PFIT_PGM_RATIOS, intel_lvds->pfit_pgm_ratios);
- I915_WRITE(PFIT_CONTROL, intel_lvds->pfit_control);
- intel_lvds->pfit_dirty = false;
- }
+
+ I915_WRITE(PFIT_PGM_RATIOS, intel_lvds->pfit_pgm_ratios);
+ I915_WRITE(PFIT_CONTROL, intel_lvds->pfit_control);
+ intel_lvds->pfit_dirty = false;
}
I915_WRITE(ctl_reg, I915_READ(ctl_reg) | POWER_TARGET_ON);
POSTING_READ(lvds_reg);
+ if (wait_for((I915_READ(stat_reg) & PP_ON) != 0, 1000))
+ DRM_ERROR("timed out waiting for panel to power on\n");
intel_panel_enable_backlight(dev);
}
@@ -113,24 +114,25 @@ static void intel_lvds_disable(struct intel_lvds *intel_lvds)
{
struct drm_device *dev = intel_lvds->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- u32 ctl_reg, lvds_reg;
+ u32 ctl_reg, lvds_reg, stat_reg;
if (HAS_PCH_SPLIT(dev)) {
ctl_reg = PCH_PP_CONTROL;
lvds_reg = PCH_LVDS;
+ stat_reg = PCH_PP_STATUS;
} else {
ctl_reg = PP_CONTROL;
lvds_reg = LVDS;
+ stat_reg = PP_STATUS;
}
intel_panel_disable_backlight(dev);
I915_WRITE(ctl_reg, I915_READ(ctl_reg) & ~POWER_TARGET_ON);
+ if (wait_for((I915_READ(stat_reg) & PP_ON) == 0, 1000))
+ DRM_ERROR("timed out waiting for panel to power off\n");
if (intel_lvds->pfit_control) {
- if (wait_for((I915_READ(PP_STATUS) & PP_ON) == 0, 1000))
- DRM_ERROR("timed out waiting for panel to power off\n");
-
I915_WRITE(PFIT_CONTROL, 0);
intel_lvds->pfit_dirty = true;
}
@@ -398,53 +400,21 @@ out:
static void intel_lvds_prepare(struct drm_encoder *encoder)
{
- struct drm_device *dev = encoder->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_lvds *intel_lvds = to_intel_lvds(encoder);
- /* We try to do the minimum that is necessary in order to unlock
- * the registers for mode setting.
- *
- * On Ironlake, this is quite simple as we just set the unlock key
- * and ignore all subtleties. (This may cause some issues...)
- *
+ /*
* Prior to Ironlake, we must disable the pipe if we want to adjust
* the panel fitter. However at all other times we can just reset
* the registers regardless.
*/
-
- if (HAS_PCH_SPLIT(dev)) {
- I915_WRITE(PCH_PP_CONTROL,
- I915_READ(PCH_PP_CONTROL) | PANEL_UNLOCK_REGS);
- } else if (intel_lvds->pfit_dirty) {
- I915_WRITE(PP_CONTROL,
- (I915_READ(PP_CONTROL) | PANEL_UNLOCK_REGS)
- & ~POWER_TARGET_ON);
- } else {
- I915_WRITE(PP_CONTROL,
- I915_READ(PP_CONTROL) | PANEL_UNLOCK_REGS);
- }
+ if (!HAS_PCH_SPLIT(encoder->dev) && intel_lvds->pfit_dirty)
+ intel_lvds_disable(intel_lvds);
}
static void intel_lvds_commit(struct drm_encoder *encoder)
{
- struct drm_device *dev = encoder->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_lvds *intel_lvds = to_intel_lvds(encoder);
- /* Undo any unlocking done in prepare to prevent accidental
- * adjustment of the registers.
- */
- if (HAS_PCH_SPLIT(dev)) {
- u32 val = I915_READ(PCH_PP_CONTROL);
- if ((val & PANEL_UNLOCK_REGS) == PANEL_UNLOCK_REGS)
- I915_WRITE(PCH_PP_CONTROL, val & 0x3);
- } else {
- u32 val = I915_READ(PP_CONTROL);
- if ((val & PANEL_UNLOCK_REGS) == PANEL_UNLOCK_REGS)
- I915_WRITE(PP_CONTROL, val & 0x3);
- }
-
/* Always do a full power on as we do not know what state
* we were left in.
*/
@@ -582,6 +552,8 @@ static void intel_lvds_destroy(struct drm_connector *connector)
struct drm_device *dev = connector->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
+ intel_panel_destroy_backlight(dev);
+
if (dev_priv->lid_notifier.notifier_call)
acpi_lid_notifier_unregister(&dev_priv->lid_notifier);
drm_sysfs_connector_remove(connector);
@@ -690,6 +662,14 @@ static const struct dmi_system_id intel_no_lvds[] = {
},
{
.callback = intel_no_lvds_dmi_callback,
+ .ident = "Dell OptiPlex FX170",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex FX170"),
+ },
+ },
+ {
+ .callback = intel_no_lvds_dmi_callback,
.ident = "AOpen Mini PC",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "AOpen"),
@@ -1032,6 +1012,19 @@ out:
pwm = I915_READ(BLC_PWM_PCH_CTL1);
pwm |= PWM_PCH_ENABLE;
I915_WRITE(BLC_PWM_PCH_CTL1, pwm);
+ /*
+ * Unlock registers and just
+ * leave them unlocked
+ */
+ I915_WRITE(PCH_PP_CONTROL,
+ I915_READ(PCH_PP_CONTROL) | PANEL_UNLOCK_REGS);
+ } else {
+ /*
+ * Unlock registers and just
+ * leave them unlocked
+ */
+ I915_WRITE(PP_CONTROL,
+ I915_READ(PP_CONTROL) | PANEL_UNLOCK_REGS);
}
dev_priv->lid_notifier.notifier_call = intel_lid_notify;
if (acpi_lid_notifier_register(&dev_priv->lid_notifier)) {
@@ -1041,6 +1034,9 @@ out:
/* keep the LVDS connector */
dev_priv->int_lvds_connector = connector;
drm_sysfs_connector_add(connector);
+
+ intel_panel_setup_backlight(dev);
+
return true;
failed:
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-13 20:49:01 +0000