From: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
Code based on the connector properties code.
Two new ioctls:
- DRM_IOCTL_MODE_CRTC_GETPROPERTIES
- DRM_IOCTL_MODE_CRTC_SETPROPERTY
The i915 driver needs this for the rotation and overscan compensation
properties. Other drivers might need this too.
v2: replace BUG_ON() for WARN(), fix bugs, add functions to get/set
the value
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
---
drivers/gpu/drm/drm_crtc.c | 150 ++++++++++++++++++++++++++++++++++++++++++++
drivers/gpu/drm/drm_drv.c | 4 +-
include/drm/drm.h | 2 +
include/drm/drm_crtc.h | 28 ++++++++-
include/drm/drm_mode.h | 13 ++++
5 files changed, 195 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 6260fc3..df00c29 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -2712,6 +2712,55 @@ int drm_connector_property_get_value(struct drm_connector *connector,
}
EXPORT_SYMBOL(drm_connector_property_get_value);
+void drm_crtc_attach_property(struct drm_crtc *crtc,
+ struct drm_property *property, uint64_t init_val)
+{
+ int i;
+
+ for (i = 0; i < DRM_CRTC_MAX_PROPERTY; i++) {
+ if (crtc->property_ids[i] == 0) {
+ crtc->property_ids[i] = property->base.id;
+ crtc->property_values[i] = init_val;
+ return;
+ }
+ }
+
+ WARN(1, "Failed to attach crtc property\n");
+}
+EXPORT_SYMBOL(drm_crtc_attach_property);
+
+int drm_crtc_property_set_value(struct drm_crtc *crtc,
+ struct drm_property *property, uint64_t value)
+{
+ int i;
+
+ for (i = 0; i < DRM_CRTC_MAX_PROPERTY; i++) {
+ if (crtc->property_ids[i] == property->base.id) {
+ crtc->property_values[i] = value;
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+}
+EXPORT_SYMBOL(drm_crtc_property_set_value);
+
+int drm_crtc_property_get_value(struct drm_crtc *crtc,
+ struct drm_property *property, uint64_t *val)
+{
+ int i;
+
+ for (i = 0; i < DRM_CRTC_MAX_PROPERTY; i++) {
+ if (crtc->property_ids[i] == property->base.id) {
+ *val = crtc->property_values[i];
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+}
+EXPORT_SYMBOL(drm_crtc_property_get_value);
+
int drm_mode_getproperty_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
@@ -2983,6 +3032,107 @@ out:
return ret;
}
+int drm_mode_crtc_get_properties_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_mode_crtc_get_properties *arg = data;
+ struct drm_mode_object *obj;
+ struct drm_crtc *crtc;
+ int ret = 0;
+ int i;
+ int copied = 0;
+ int props_count = 0;
+ uint32_t __user *props_ptr;
+ uint64_t __user *prop_values_ptr;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ mutex_lock(&dev->mode_config.mutex);
+
+ obj = drm_mode_object_find(dev, arg->crtc_id, DRM_MODE_OBJECT_CRTC);
+ if (!obj) {
+ ret = -EINVAL;
+ goto out;
+ }
+ crtc = obj_to_crtc(obj);
+
+ for (props_count = 0; props_count < DRM_CRTC_MAX_PROPERTY &&
+ crtc->property_ids[props_count] != 0; props_count++)
+ ;
+
+ /* This ioctl is called twice, once to determine how much space is
+ * needed, and the 2nd time to fill it. */
+ if ((arg->count_props >= props_count) && props_count) {
+ copied = 0;
+ props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
+ prop_values_ptr = (uint64_t __user *)(unsigned long)
+ (arg->prop_values_ptr);
+ for (i = 0; i < props_count; i++) {
+ if (put_user(crtc->property_ids[i],
+ props_ptr + copied)) {
+ ret = -EFAULT;
+ goto out;
+ }
+ if (put_user(crtc->property_values[i],
+ prop_values_ptr + copied)) {
+ ret = -EFAULT;
+ goto out;
+ }
+ copied++;
+ }
+ }
+ arg->count_props = props_count;
+out:
+ mutex_unlock(&dev->mode_config.mutex);
+ return ret;
+}
+
+int drm_mode_crtc_set_property_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_mode_crtc_set_property *arg = data;
+ struct drm_mode_object *obj;
+ struct drm_property *property;
+ struct drm_crtc *crtc;
+ int ret = -EINVAL;
+ int i;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ mutex_lock(&dev->mode_config.mutex);
+
+ obj = drm_mode_object_find(dev, arg->crtc_id, DRM_MODE_OBJECT_CRTC);
+ if (!obj)
+ goto out;
+ crtc = obj_to_crtc(obj);
+
+ for (i = 0; i < DRM_CRTC_MAX_PROPERTY; i++)
+ if (crtc->property_ids[i] == arg->prop_id)
+ break;
+
+ if (i == DRM_CRTC_MAX_PROPERTY)
+ goto out;
+
+ obj = drm_mode_object_find(dev, arg->prop_id, DRM_MODE_OBJECT_PROPERTY);
+ if (!obj)
+ goto out;
+ property = obj_to_property(obj);
+
+ if (!drm_property_change_is_valid(property, arg->value))
+ goto out;
+
+ if (crtc->funcs->set_property)
+ ret = crtc->funcs->set_property(crtc, property, arg->value);
+ if (!ret) {
+ crtc->property_values[i] = arg->value;
+ }
+out:
+ mutex_unlock(&dev->mode_config.mutex);
+ return ret;
+}
+
int drm_mode_connector_attach_encoder(struct drm_connector *connector,
struct drm_encoder *encoder)
{
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index d166bd0..815e3a9 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -159,7 +159,9 @@ static struct drm_ioctl_desc drm_ioctls[] = {
DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
- DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED)
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_CRTC_GETPROPERTIES, drm_mode_crtc_get_properties_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_CRTC_SETPROPERTY, drm_mode_crtc_set_property_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED)
};
#define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls )
diff --git a/include/drm/drm.h b/include/drm/drm.h
index 34a7b89..a397a93 100644
--- a/include/drm/drm.h
+++ b/include/drm/drm.h
@@ -718,6 +718,8 @@ struct drm_get_cap {
#define DRM_IOCTL_MODE_GETPLANE DRM_IOWR(0xB6, struct drm_mode_get_plane)
#define DRM_IOCTL_MODE_SETPLANE DRM_IOWR(0xB7, struct drm_mode_set_plane)
#define DRM_IOCTL_MODE_ADDFB2 DRM_IOWR(0xB8, struct drm_mode_fb_cmd2)
+#define DRM_IOCTL_MODE_CRTC_GETPROPERTIES DRM_IOWR(0xB9, struct drm_mode_crtc_get_properties)
+#define DRM_IOCTL_MODE_CRTC_SETPROPERTY DRM_IOWR(0xBA, struct drm_mode_crtc_set_property)
/**
* Device specific ioctls should only be in their respective headers
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 21681fe..a2d660d 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -283,6 +283,8 @@ struct drm_encoder;
struct drm_pending_vblank_event;
struct drm_plane;
+#define DRM_CRTC_MAX_PROPERTY 16
+
/**
* drm_crtc_funcs - control CRTCs for a given device
* @reset: reset CRTC after state has been invalidate (e.g. resume)
@@ -297,7 +299,8 @@ struct drm_plane;
* @mode_fixup: fixup proposed mode
* @mode_set: set the desired mode on the CRTC
* @gamma_set: specify color ramp for CRTC
- * @destroy: deinit and free object.
+ * @destroy: deinit and free object
+ * @set_property: called when a property is changed
*
* The drm_crtc_funcs structure is the central CRTC management structure
* in the DRM. Each CRTC controls one or more connectors (note that the name
@@ -341,6 +344,9 @@ struct drm_crtc_funcs {
int (*page_flip)(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_pending_vblank_event *event);
+
+ int (*set_property)(struct drm_crtc *crtc,
+ struct drm_property *property, uint64_t val);
};
/**
@@ -360,6 +366,8 @@ struct drm_crtc_funcs {
* @framedur_ns: precise line timing
* @pixeldur_ns: precise pixel timing
* @helper_private: mid-layer private data
+ * @property_ids: property tracking for this CRTC
+ * @property_values: property values
*
* Each CRTC may have one or more connectors associated with it. This structure
* allows the CRTC to be controlled.
@@ -395,6 +403,9 @@ struct drm_crtc {
/* if you are using the helper */
void *helper_private;
+
+ u32 property_ids[DRM_CRTC_MAX_PROPERTY];
+ uint64_t property_values[DRM_CRTC_MAX_PROPERTY];
};
@@ -895,6 +906,12 @@ extern int drm_connector_property_set_value(struct drm_connector *connector,
extern int drm_connector_property_get_value(struct drm_connector *connector,
struct drm_property *property,
uint64_t *value);
+extern int drm_crtc_property_set_value(struct drm_crtc *crtc,
+ struct drm_property *property,
+ uint64_t value);
+extern int drm_crtc_property_get_value(struct drm_crtc *crtc,
+ struct drm_property *property,
+ uint64_t *value);
extern struct drm_display_mode *drm_crtc_mode_create(struct drm_device *dev);
extern void drm_framebuffer_set_object(struct drm_device *dev,
unsigned long handle);
@@ -909,6 +926,9 @@ extern bool drm_crtc_in_use(struct drm_crtc *crtc);
extern void drm_connector_attach_property(struct drm_connector *connector,
struct drm_property *property, uint64_t init_val);
+extern void drm_crtc_attach_property(struct drm_crtc *crtc,
+ struct drm_property *property,
+ uint64_t init_val);
extern struct drm_property *drm_property_create(struct drm_device *dev, int flags,
const char *name, int num_values);
extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
@@ -1019,6 +1039,12 @@ extern int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
extern int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
+extern int drm_mode_crtc_get_properties_ioctl(struct drm_device *dev,
+ void *data,
+ struct drm_file *file_priv);
+extern int drm_mode_crtc_set_property_ioctl(struct drm_device *dev,
+ void *data,
+ struct drm_file *file_priv);
extern void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
int *bpp);
diff --git a/include/drm/drm_mode.h b/include/drm/drm_mode.h
index 2a2acda..890b930 100644
--- a/include/drm/drm_mode.h
+++ b/include/drm/drm_mode.h
@@ -252,6 +252,19 @@ struct drm_mode_connector_set_property {
__u32 connector_id;
};
+struct drm_mode_crtc_get_properties {
+ __u64 props_ptr;
+ __u64 prop_values_ptr;
+ __u32 count_props;
+ __u32 crtc_id;
+};
+
+struct drm_mode_crtc_set_property {
+ __u64 value;
+ __u32 prop_id;
+ __u32 crtc_id;
+};
+
struct drm_mode_get_blob {
__u32 blob_id;
__u32 length;
--
1.7.9.1
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