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path: root/drivers/gpu/drm/nouveau/nouveau_backlight.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_backlight.c')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_backlight.c169
1 files changed, 126 insertions, 43 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c
index 00a55df..fa22b28 100644
--- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
+++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
@@ -37,8 +37,10 @@
#include "nouveau_drv.h"
#include "nouveau_drm.h"
#include "nouveau_reg.h"
+#include "nouveau_encoder.h"
-static int nv40_get_intensity(struct backlight_device *bd)
+static int
+nv40_get_intensity(struct backlight_device *bd)
{
struct drm_device *dev = bl_get_data(bd);
int val = (nv_rd32(dev, NV40_PMC_BACKLIGHT) & NV40_PMC_BACKLIGHT_MASK)
@@ -47,7 +49,8 @@ static int nv40_get_intensity(struct backlight_device *bd)
return val;
}
-static int nv40_set_intensity(struct backlight_device *bd)
+static int
+nv40_set_intensity(struct backlight_device *bd)
{
struct drm_device *dev = bl_get_data(bd);
int val = bd->props.brightness;
@@ -65,30 +68,8 @@ static const struct backlight_ops nv40_bl_ops = {
.update_status = nv40_set_intensity,
};
-static int nv50_get_intensity(struct backlight_device *bd)
-{
- struct drm_device *dev = bl_get_data(bd);
-
- return nv_rd32(dev, NV50_PDISPLAY_SOR_BACKLIGHT);
-}
-
-static int nv50_set_intensity(struct backlight_device *bd)
-{
- struct drm_device *dev = bl_get_data(bd);
- int val = bd->props.brightness;
-
- nv_wr32(dev, NV50_PDISPLAY_SOR_BACKLIGHT,
- val | NV50_PDISPLAY_SOR_BACKLIGHT_ENABLE);
- return 0;
-}
-
-static const struct backlight_ops nv50_bl_ops = {
- .options = BL_CORE_SUSPENDRESUME,
- .get_brightness = nv50_get_intensity,
- .update_status = nv50_set_intensity,
-};
-
-static int nouveau_nv40_backlight_init(struct drm_connector *connector)
+static int
+nv40_backlight_init(struct drm_connector *connector)
{
struct drm_device *dev = connector->dev;
struct drm_nouveau_private *dev_priv = dev->dev_private;
@@ -113,34 +94,129 @@ static int nouveau_nv40_backlight_init(struct drm_connector *connector)
return 0;
}
-static int nouveau_nv50_backlight_init(struct drm_connector *connector)
+static int
+nv50_get_intensity(struct backlight_device *bd)
+{
+ struct nouveau_encoder *nv_encoder = bl_get_data(bd);
+ struct drm_device *dev = nv_encoder->base.base.dev;
+ int or = nv_encoder->or;
+ u32 div = 1025;
+ u32 val;
+
+ val = nv_rd32(dev, NV50_PDISP_SOR_PWM_CTL(or));
+ val &= NV50_PDISP_SOR_PWM_CTL_VAL;
+ return ((val * 100) + (div / 2)) / div;
+}
+
+static int
+nv50_set_intensity(struct backlight_device *bd)
+{
+ struct nouveau_encoder *nv_encoder = bl_get_data(bd);
+ struct drm_device *dev = nv_encoder->base.base.dev;
+ int or = nv_encoder->or;
+ u32 div = 1025;
+ u32 val = (bd->props.brightness * div) / 100;
+
+ nv_wr32(dev, NV50_PDISP_SOR_PWM_CTL(or),
+ NV50_PDISP_SOR_PWM_CTL_NEW | val);
+ return 0;
+}
+
+static const struct backlight_ops nv50_bl_ops = {
+ .options = BL_CORE_SUSPENDRESUME,
+ .get_brightness = nv50_get_intensity,
+ .update_status = nv50_set_intensity,
+};
+
+static int
+nva3_get_intensity(struct backlight_device *bd)
+{
+ struct nouveau_encoder *nv_encoder = bl_get_data(bd);
+ struct drm_device *dev = nv_encoder->base.base.dev;
+ int or = nv_encoder->or;
+ u32 div, val;
+
+ div = nv_rd32(dev, NV50_PDISP_SOR_PWM_DIV(or));
+ val = nv_rd32(dev, NV50_PDISP_SOR_PWM_CTL(or));
+ val &= NVA3_PDISP_SOR_PWM_CTL_VAL;
+ if (div && div >= val)
+ return ((val * 100) + (div / 2)) / div;
+
+ return 100;
+}
+
+static int
+nva3_set_intensity(struct backlight_device *bd)
+{
+ struct nouveau_encoder *nv_encoder = bl_get_data(bd);
+ struct drm_device *dev = nv_encoder->base.base.dev;
+ int or = nv_encoder->or;
+ u32 div, val;
+
+ div = nv_rd32(dev, NV50_PDISP_SOR_PWM_DIV(or));
+ val = (bd->props.brightness * div) / 100;
+ if (div) {
+ nv_wr32(dev, NV50_PDISP_SOR_PWM_CTL(or), val |
+ NV50_PDISP_SOR_PWM_CTL_NEW |
+ NVA3_PDISP_SOR_PWM_CTL_UNK);
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static const struct backlight_ops nva3_bl_ops = {
+ .options = BL_CORE_SUSPENDRESUME,
+ .get_brightness = nva3_get_intensity,
+ .update_status = nva3_set_intensity,
+};
+
+static int
+nv50_backlight_init(struct drm_connector *connector)
{
struct drm_device *dev = connector->dev;
struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_encoder *nv_encoder;
struct backlight_properties props;
struct backlight_device *bd;
+ const struct backlight_ops *ops;
+
+ nv_encoder = find_encoder(connector, OUTPUT_LVDS);
+ if (!nv_encoder) {
+ nv_encoder = find_encoder(connector, OUTPUT_DP);
+ if (!nv_encoder)
+ return -ENODEV;
+ }
- if (!nv_rd32(dev, NV50_PDISPLAY_SOR_BACKLIGHT))
+ if (!nv_rd32(dev, NV50_PDISP_SOR_PWM_CTL(nv_encoder->or)))
return 0;
+ if (dev_priv->chipset <= 0xa0 ||
+ dev_priv->chipset == 0xaa ||
+ dev_priv->chipset == 0xac)
+ ops = &nv50_bl_ops;
+ else
+ ops = &nva3_bl_ops;
+
memset(&props, 0, sizeof(struct backlight_properties));
props.type = BACKLIGHT_RAW;
- props.max_brightness = 1025;
- bd = backlight_device_register("nv_backlight", &connector->kdev, dev,
- &nv50_bl_ops, &props);
+ props.max_brightness = 100;
+ bd = backlight_device_register("nv_backlight", &connector->kdev,
+ nv_encoder, ops, &props);
if (IS_ERR(bd))
return PTR_ERR(bd);
dev_priv->backlight = bd;
- bd->props.brightness = nv50_get_intensity(bd);
+ bd->props.brightness = bd->ops->get_brightness(bd);
backlight_update_status(bd);
return 0;
}
-int nouveau_backlight_init(struct drm_connector *connector)
+int
+nouveau_backlight_init(struct drm_device *dev)
{
- struct drm_device *dev = connector->dev;
struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct drm_connector *connector;
#ifdef CONFIG_ACPI
if (acpi_video_backlight_support()) {
@@ -150,21 +226,28 @@ int nouveau_backlight_init(struct drm_connector *connector)
}
#endif
- switch (dev_priv->card_type) {
- case NV_40:
- return nouveau_nv40_backlight_init(connector);
- case NV_50:
- return nouveau_nv50_backlight_init(connector);
- default:
- break;
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS &&
+ connector->connector_type != DRM_MODE_CONNECTOR_eDP)
+ continue;
+
+ switch (dev_priv->card_type) {
+ case NV_40:
+ return nv40_backlight_init(connector);
+ case NV_50:
+ return nv50_backlight_init(connector);
+ default:
+ break;
+ }
}
+
return 0;
}
-void nouveau_backlight_exit(struct drm_connector *connector)
+void
+nouveau_backlight_exit(struct drm_device *dev)
{
- struct drm_device *dev = connector->dev;
struct drm_nouveau_private *dev_priv = dev->dev_private;
if (dev_priv->backlight) {