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path: root/drivers/gpu/drm/gma500/cdv_intel_lvds.c
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Diffstat (limited to 'drivers/gpu/drm/gma500/cdv_intel_lvds.c')
-rw-r--r--drivers/gpu/drm/gma500/cdv_intel_lvds.c186
1 files changed, 126 insertions, 60 deletions
diff --git a/drivers/gpu/drm/gma500/cdv_intel_lvds.c b/drivers/gpu/drm/gma500/cdv_intel_lvds.c
index 50e744be985..8ecc920fc26 100644
--- a/drivers/gpu/drm/gma500/cdv_intel_lvds.c
+++ b/drivers/gpu/drm/gma500/cdv_intel_lvds.c
@@ -78,13 +78,14 @@ static u32 cdv_intel_lvds_get_max_backlight(struct drm_device *dev)
gma_power_end(dev);
} else
- retval = ((dev_priv->saveBLC_PWM_CTL &
+ retval = ((dev_priv->regs.saveBLC_PWM_CTL &
BACKLIGHT_MODULATION_FREQ_MASK) >>
BACKLIGHT_MODULATION_FREQ_SHIFT) * 2;
return retval;
}
+#if 0
/*
* Set LVDS backlight level by I2C command
*/
@@ -165,6 +166,7 @@ void cdv_intel_lvds_set_brightness(struct drm_device *dev, int level)
else
cdv_lvds_pwm_set_brightness(dev, level);
}
+#endif
/**
* Sets the backlight level.
@@ -184,9 +186,9 @@ static void cdv_intel_lvds_set_backlight(struct drm_device *dev, int level)
(level << BACKLIGHT_DUTY_CYCLE_SHIFT)));
gma_power_end(dev);
} else {
- blc_pwm_ctl = dev_priv->saveBLC_PWM_CTL &
+ blc_pwm_ctl = dev_priv->regs.saveBLC_PWM_CTL &
~BACKLIGHT_DUTY_CYCLE_MASK;
- dev_priv->saveBLC_PWM_CTL = (blc_pwm_ctl |
+ dev_priv->regs.saveBLC_PWM_CTL = (blc_pwm_ctl |
(level << BACKLIGHT_DUTY_CYCLE_SHIFT));
}
}
@@ -242,7 +244,7 @@ static void cdv_intel_lvds_restore(struct drm_connector *connector)
{
}
-int cdv_intel_lvds_mode_valid(struct drm_connector *connector,
+static int cdv_intel_lvds_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
struct drm_device *dev = connector->dev;
@@ -267,8 +269,8 @@ int cdv_intel_lvds_mode_valid(struct drm_connector *connector,
return MODE_OK;
}
-bool cdv_intel_lvds_mode_fixup(struct drm_encoder *encoder,
- struct drm_display_mode *mode,
+static bool cdv_intel_lvds_mode_fixup(struct drm_encoder *encoder,
+ const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct drm_device *dev = encoder->dev;
@@ -354,6 +356,7 @@ static void cdv_intel_lvds_mode_set(struct drm_encoder *encoder,
{
struct drm_device *dev = encoder->dev;
struct drm_psb_private *dev_priv = dev->dev_private;
+ struct gma_crtc *gma_crtc = to_gma_crtc(encoder->crtc);
u32 pfit_control;
/*
@@ -375,6 +378,8 @@ static void cdv_intel_lvds_mode_set(struct drm_encoder *encoder,
else
pfit_control = 0;
+ pfit_control |= gma_crtc->pipe << PFIT_PIPE_SHIFT;
+
if (dev_priv->lvds_dither)
pfit_control |= PANEL_8TO6_DITHER_ENABLE;
@@ -401,12 +406,11 @@ static int cdv_intel_lvds_get_modes(struct drm_connector *connector)
{
struct drm_device *dev = connector->dev;
struct drm_psb_private *dev_priv = dev->dev_private;
- struct psb_intel_encoder *psb_intel_encoder =
- psb_intel_attached_encoder(connector);
+ struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
int ret;
- ret = psb_intel_ddc_get_modes(connector, &psb_intel_encoder->i2c_bus->adapter);
+ ret = psb_intel_ddc_get_modes(connector, &gma_encoder->i2c_bus->adapter);
if (ret)
return ret;
@@ -436,27 +440,25 @@ static int cdv_intel_lvds_get_modes(struct drm_connector *connector)
* Unregister the DDC bus for this connector then free the driver private
* structure.
*/
-void cdv_intel_lvds_destroy(struct drm_connector *connector)
+static void cdv_intel_lvds_destroy(struct drm_connector *connector)
{
- struct psb_intel_encoder *psb_intel_encoder =
- psb_intel_attached_encoder(connector);
+ struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
- if (psb_intel_encoder->i2c_bus)
- psb_intel_i2c_destroy(psb_intel_encoder->i2c_bus);
+ if (gma_encoder->i2c_bus)
+ psb_intel_i2c_destroy(gma_encoder->i2c_bus);
drm_sysfs_connector_remove(connector);
drm_connector_cleanup(connector);
kfree(connector);
}
-int cdv_intel_lvds_set_property(struct drm_connector *connector,
+static int cdv_intel_lvds_set_property(struct drm_connector *connector,
struct drm_property *property,
uint64_t value)
{
struct drm_encoder *encoder = connector->encoder;
if (!strcmp(property->name, "scaling mode") && encoder) {
- struct psb_intel_crtc *crtc =
- to_psb_intel_crtc(encoder->crtc);
+ struct gma_crtc *crtc = to_gma_crtc(encoder->crtc);
uint64_t curValue;
if (!crtc)
@@ -473,7 +475,7 @@ int cdv_intel_lvds_set_property(struct drm_connector *connector,
return -1;
}
- if (drm_connector_property_get_value(connector,
+ if (drm_object_property_get_value(&connector->base,
property,
&curValue))
return -1;
@@ -481,7 +483,7 @@ int cdv_intel_lvds_set_property(struct drm_connector *connector,
if (curValue == value)
return 0;
- if (drm_connector_property_set_value(connector,
+ if (drm_object_property_set_value(&connector->base,
property,
value))
return -1;
@@ -492,24 +494,16 @@ int cdv_intel_lvds_set_property(struct drm_connector *connector,
&crtc->saved_mode,
encoder->crtc->x,
encoder->crtc->y,
- encoder->crtc->fb))
+ encoder->crtc->primary->fb))
return -1;
}
} else if (!strcmp(property->name, "backlight") && encoder) {
- if (drm_connector_property_set_value(connector,
+ if (drm_object_property_set_value(&connector->base,
property,
value))
return -1;
- else {
-#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
- struct drm_psb_private *dev_priv =
- encoder->dev->dev_private;
- struct backlight_device *bd =
- dev_priv->backlight_device;
- bd->props.brightness = value;
- backlight_update_status(bd);
-#endif
- }
+ else
+ gma_backlight_set(encoder->dev, value);
} else if (!strcmp(property->name, "DPMS") && encoder) {
struct drm_encoder_helper_funcs *helpers =
encoder->helper_private;
@@ -531,7 +525,7 @@ static const struct drm_connector_helper_funcs
cdv_intel_lvds_connector_helper_funcs = {
.get_modes = cdv_intel_lvds_get_modes,
.mode_valid = cdv_intel_lvds_mode_valid,
- .best_encoder = psb_intel_best_encoder,
+ .best_encoder = gma_best_encoder,
};
static const struct drm_connector_funcs cdv_intel_lvds_connector_funcs = {
@@ -550,10 +544,60 @@ static void cdv_intel_lvds_enc_destroy(struct drm_encoder *encoder)
drm_encoder_cleanup(encoder);
}
-const struct drm_encoder_funcs cdv_intel_lvds_enc_funcs = {
+static const struct drm_encoder_funcs cdv_intel_lvds_enc_funcs = {
.destroy = cdv_intel_lvds_enc_destroy,
};
+/*
+ * Enumerate the child dev array parsed from VBT to check whether
+ * the LVDS is present.
+ * If it is present, return 1.
+ * If it is not present, return false.
+ * If no child dev is parsed from VBT, it assumes that the LVDS is present.
+ */
+static bool lvds_is_present_in_vbt(struct drm_device *dev,
+ u8 *i2c_pin)
+{
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ int i;
+
+ if (!dev_priv->child_dev_num)
+ return true;
+
+ for (i = 0; i < dev_priv->child_dev_num; i++) {
+ struct child_device_config *child = dev_priv->child_dev + i;
+
+ /* If the device type is not LFP, continue.
+ * We have to check both the new identifiers as well as the
+ * old for compatibility with some BIOSes.
+ */
+ if (child->device_type != DEVICE_TYPE_INT_LFP &&
+ child->device_type != DEVICE_TYPE_LFP)
+ continue;
+
+ if (child->i2c_pin)
+ *i2c_pin = child->i2c_pin;
+
+ /* However, we cannot trust the BIOS writers to populate
+ * the VBT correctly. Since LVDS requires additional
+ * information from AIM blocks, a non-zero addin offset is
+ * a good indicator that the LVDS is actually present.
+ */
+ if (child->addin_offset)
+ return true;
+
+ /* But even then some BIOS writers perform some black magic
+ * and instantiate the device without reference to any
+ * additional data. Trust that if the VBT was written into
+ * the OpRegion then they have validated the LVDS's existence.
+ */
+ if (dev_priv->opregion.vbt)
+ return true;
+ }
+
+ return false;
+}
+
/**
* cdv_intel_lvds_init - setup LVDS connectors on this device
* @dev: drm device
@@ -564,8 +608,8 @@ const struct drm_encoder_funcs cdv_intel_lvds_enc_funcs = {
void cdv_intel_lvds_init(struct drm_device *dev,
struct psb_intel_mode_device *mode_dev)
{
- struct psb_intel_encoder *psb_intel_encoder;
- struct psb_intel_connector *psb_intel_connector;
+ struct gma_encoder *gma_encoder;
+ struct gma_connector *gma_connector;
struct cdv_intel_lvds_priv *lvds_priv;
struct drm_connector *connector;
struct drm_encoder *encoder;
@@ -574,25 +618,32 @@ void cdv_intel_lvds_init(struct drm_device *dev,
struct drm_psb_private *dev_priv = dev->dev_private;
u32 lvds;
int pipe;
+ u8 pin;
+
+ pin = GMBUS_PORT_PANEL;
+ if (!lvds_is_present_in_vbt(dev, &pin)) {
+ DRM_DEBUG_KMS("LVDS is not present in VBT\n");
+ return;
+ }
- psb_intel_encoder = kzalloc(sizeof(struct psb_intel_encoder),
+ gma_encoder = kzalloc(sizeof(struct gma_encoder),
GFP_KERNEL);
- if (!psb_intel_encoder)
+ if (!gma_encoder)
return;
- psb_intel_connector = kzalloc(sizeof(struct psb_intel_connector),
+ gma_connector = kzalloc(sizeof(struct gma_connector),
GFP_KERNEL);
- if (!psb_intel_connector)
+ if (!gma_connector)
goto failed_connector;
lvds_priv = kzalloc(sizeof(struct cdv_intel_lvds_priv), GFP_KERNEL);
if (!lvds_priv)
goto failed_lvds_priv;
- psb_intel_encoder->dev_priv = lvds_priv;
+ gma_encoder->dev_priv = lvds_priv;
- connector = &psb_intel_connector->base;
- encoder = &psb_intel_encoder->base;
+ connector = &gma_connector->base;
+ encoder = &gma_encoder->base;
drm_connector_init(dev, connector,
@@ -604,9 +655,8 @@ void cdv_intel_lvds_init(struct drm_device *dev,
DRM_MODE_ENCODER_LVDS);
- psb_intel_connector_attach_encoder(psb_intel_connector,
- psb_intel_encoder);
- psb_intel_encoder->type = INTEL_OUTPUT_LVDS;
+ gma_connector_attach_encoder(gma_connector, gma_encoder);
+ gma_encoder->type = INTEL_OUTPUT_LVDS;
drm_encoder_helper_add(encoder, &cdv_intel_lvds_helper_funcs);
drm_connector_helper_add(connector,
@@ -616,10 +666,10 @@ void cdv_intel_lvds_init(struct drm_device *dev,
connector->doublescan_allowed = false;
/*Attach connector properties*/
- drm_connector_attach_property(connector,
+ drm_object_attach_property(&connector->base,
dev->mode_config.scaling_mode_property,
DRM_MODE_SCALE_FULLSCREEN);
- drm_connector_attach_property(connector,
+ drm_object_attach_property(&connector->base,
dev_priv->backlight_property,
BRIGHTNESS_MAX_LEVEL);
@@ -627,16 +677,16 @@ void cdv_intel_lvds_init(struct drm_device *dev,
* Set up I2C bus
* FIXME: distroy i2c_bus when exit
*/
- psb_intel_encoder->i2c_bus = psb_intel_i2c_create(dev,
+ gma_encoder->i2c_bus = psb_intel_i2c_create(dev,
GPIOB,
"LVDSBLC_B");
- if (!psb_intel_encoder->i2c_bus) {
+ if (!gma_encoder->i2c_bus) {
dev_printk(KERN_ERR,
&dev->pdev->dev, "I2C bus registration failed.\n");
goto failed_blc_i2c;
}
- psb_intel_encoder->i2c_bus->slave_addr = 0x2C;
- dev_priv->lvds_i2c_bus = psb_intel_encoder->i2c_bus;
+ gma_encoder->i2c_bus->slave_addr = 0x2C;
+ dev_priv->lvds_i2c_bus = gma_encoder->i2c_bus;
/*
* LVDS discovery:
@@ -649,10 +699,10 @@ void cdv_intel_lvds_init(struct drm_device *dev,
*/
/* Set up the DDC bus. */
- psb_intel_encoder->ddc_bus = psb_intel_i2c_create(dev,
+ gma_encoder->ddc_bus = psb_intel_i2c_create(dev,
GPIOC,
"LVDSDDC_C");
- if (!psb_intel_encoder->ddc_bus) {
+ if (!gma_encoder->ddc_bus) {
dev_printk(KERN_ERR, &dev->pdev->dev,
"DDC bus registration " "failed.\n");
goto failed_ddc;
@@ -662,8 +712,9 @@ void cdv_intel_lvds_init(struct drm_device *dev,
* Attempt to get the fixed panel mode from DDC. Assume that the
* preferred mode is the right one.
*/
+ mutex_lock(&dev->mode_config.mutex);
psb_intel_ddc_get_modes(connector,
- &psb_intel_encoder->ddc_bus->adapter);
+ &gma_encoder->ddc_bus->adapter);
list_for_each_entry(scan, &connector->probed_modes, head) {
if (scan->type & DRM_MODE_TYPE_PREFERRED) {
mode_dev->panel_fixed_mode =
@@ -708,25 +759,40 @@ void cdv_intel_lvds_init(struct drm_device *dev,
goto failed_find;
}
+ /* setup PWM */
+ {
+ u32 pwm;
+
+ pwm = REG_READ(BLC_PWM_CTL2);
+ if (pipe == 1)
+ pwm |= PWM_PIPE_B;
+ else
+ pwm &= ~PWM_PIPE_B;
+ pwm |= PWM_ENABLE;
+ REG_WRITE(BLC_PWM_CTL2, pwm);
+ }
+
out:
+ mutex_unlock(&dev->mode_config.mutex);
drm_sysfs_connector_add(connector);
return;
failed_find:
+ mutex_unlock(&dev->mode_config.mutex);
printk(KERN_ERR "Failed find\n");
- if (psb_intel_encoder->ddc_bus)
- psb_intel_i2c_destroy(psb_intel_encoder->ddc_bus);
+ if (gma_encoder->ddc_bus)
+ psb_intel_i2c_destroy(gma_encoder->ddc_bus);
failed_ddc:
printk(KERN_ERR "Failed DDC\n");
- if (psb_intel_encoder->i2c_bus)
- psb_intel_i2c_destroy(psb_intel_encoder->i2c_bus);
+ if (gma_encoder->i2c_bus)
+ psb_intel_i2c_destroy(gma_encoder->i2c_bus);
failed_blc_i2c:
printk(KERN_ERR "Failed BLC\n");
drm_encoder_cleanup(encoder);
drm_connector_cleanup(connector);
kfree(lvds_priv);
failed_lvds_priv:
- kfree(psb_intel_connector);
+ kfree(gma_connector);
failed_connector:
- kfree(psb_intel_encoder);
+ kfree(gma_encoder);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 10:38:45 +0000