From: Paulo Zanoni Date: Tue, 15 May 2012 21:09:02 +0000 (-0300) Subject: drm: add generic ioctls to get/set properties on any object X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c543188afb7a83e66161c026dc6fd5eb38dc0b63;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git drm: add generic ioctls to get/set properties on any object Useless for connector properties (since they already have their own ioctls), but useful when we add properties to CRTCs, planes and other objects. Reviewed-by: Eugeni Dodonov Reviewed-by: Rob Clark Tested-by: Rob Clark Signed-off-by: Paulo Zanoni Signed-off-by: Dave Airlie --- diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 19a289f01234..b6783f914246 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -2875,6 +2875,58 @@ int drm_connector_property_get_value(struct drm_connector *connector, } EXPORT_SYMBOL(drm_connector_property_get_value); +void drm_object_attach_property(struct drm_mode_object *obj, + struct drm_property *property, + uint64_t init_val) +{ + int i; + + for (i = 0; i < DRM_OBJECT_MAX_PROPERTY; i++) { + if (obj->properties->ids[i] == 0) { + obj->properties->ids[i] = property->base.id; + obj->properties->values[i] = init_val; + return; + } + } + + WARN(1, "Failed to attach object property (type: 0x%x). Please " + "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time you see " + "this message on the same object type.\n", obj->type); +} +EXPORT_SYMBOL(drm_object_attach_property); + +int drm_object_property_set_value(struct drm_mode_object *obj, + struct drm_property *property, uint64_t val) +{ + int i; + + for (i = 0; i < DRM_OBJECT_MAX_PROPERTY; i++) { + if (obj->properties->ids[i] == property->base.id) { + obj->properties->values[i] = val; + return 0; + } + } + + return -EINVAL; +} +EXPORT_SYMBOL(drm_object_property_set_value); + +int drm_object_property_get_value(struct drm_mode_object *obj, + struct drm_property *property, uint64_t *val) +{ + int i; + + for (i = 0; i < DRM_OBJECT_MAX_PROPERTY; i++) { + if (obj->properties->ids[i] == property->base.id) { + *val = obj->properties->values[i]; + return 0; + } + } + + return -EINVAL; +} +EXPORT_SYMBOL(drm_object_property_get_value); + int drm_mode_getproperty_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { @@ -3148,6 +3200,136 @@ out: return ret; } +static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj, + struct drm_property *property, + uint64_t value) +{ + int ret = -EINVAL; + struct drm_connector *connector = obj_to_connector(obj); + + /* Do DPMS ourselves */ + if (property == connector->dev->mode_config.dpms_property) { + if (connector->funcs->dpms) + (*connector->funcs->dpms)(connector, (int)value); + ret = 0; + } else if (connector->funcs->set_property) + ret = connector->funcs->set_property(connector, property, value); + + /* store the property value if successful */ + if (!ret) + drm_connector_property_set_value(connector, property, value); + return ret; +} + +int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_mode_obj_get_properties *arg = data; + struct drm_mode_object *obj; + 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->obj_id, arg->obj_type); + if (!obj) { + ret = -EINVAL; + goto out; + } + if (!obj->properties) { + ret = -EINVAL; + goto out; + } + + /* Assume [ prop, 0, prop ] won't happen (if we ever delete properties, + * we need to remove the gap inside the array). */ + for (props_count = 0; props_count < DRM_OBJECT_MAX_PROPERTY && + obj->properties->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(obj->properties->ids[i], + props_ptr + copied)) { + ret = -EFAULT; + goto out; + } + if (put_user(obj->properties->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_obj_set_property_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_mode_obj_set_property *arg = data; + struct drm_mode_object *arg_obj; + struct drm_mode_object *prop_obj; + struct drm_property *property; + int ret = -EINVAL; + int i; + + if (!drm_core_check_feature(dev, DRIVER_MODESET)) + return -EINVAL; + + mutex_lock(&dev->mode_config.mutex); + + arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); + if (!arg_obj) + goto out; + if (!arg_obj->properties) + goto out; + + for (i = 0; i < DRM_OBJECT_MAX_PROPERTY; i++) + if (arg_obj->properties->ids[i] == arg->prop_id) + break; + + if (i == DRM_OBJECT_MAX_PROPERTY) + goto out; + + prop_obj = drm_mode_object_find(dev, arg->prop_id, + DRM_MODE_OBJECT_PROPERTY); + if (!prop_obj) + goto out; + property = obj_to_property(prop_obj); + + if (!drm_property_change_is_valid(property, arg->value)) + goto out; + + switch (arg_obj->type) { + case DRM_MODE_OBJECT_CONNECTOR: + ret = drm_mode_connector_set_obj_prop(arg_obj, property, + arg->value); + break; + } + +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 6116e3b75393..8a9d0792e4ec 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -163,7 +163,9 @@ 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_OBJ_GETPROPERTIES, drm_mode_obj_get_properties_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_SETPROPERTY, drm_mode_obj_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 64ff02d5b730..5b831df15bf1 100644 --- a/include/drm/drm.h +++ b/include/drm/drm.h @@ -730,6 +730,8 @@ struct drm_prime_handle { #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_OBJ_GETPROPERTIES DRM_IOWR(0xB9, struct drm_mode_obj_get_properties) +#define DRM_IOCTL_MODE_OBJ_SETPROPERTY DRM_IOWR(0xBA, struct drm_mode_obj_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 77606794308b..b0c32499fcd4 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -903,6 +903,12 @@ 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_object_property_set_value(struct drm_mode_object *obj, + struct drm_property *property, + uint64_t val); +extern int drm_object_property_get_value(struct drm_mode_object *obj, + 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); @@ -917,6 +923,9 @@ 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_object_attach_property(struct drm_mode_object *obj, + 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, @@ -1029,6 +1038,10 @@ 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_obj_get_properties_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv); +extern int drm_mode_obj_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 4a0aae38e160..326f2be0d497 100644 --- a/include/drm/drm_mode.h +++ b/include/drm/drm_mode.h @@ -254,6 +254,21 @@ struct drm_mode_connector_set_property { __u32 connector_id; }; +struct drm_mode_obj_get_properties { + __u64 props_ptr; + __u64 prop_values_ptr; + __u32 count_props; + __u32 obj_id; + __u32 obj_type; +}; + +struct drm_mode_obj_set_property { + __u64 value; + __u32 prop_id; + __u32 obj_id; + __u32 obj_type; +}; + struct drm_mode_get_blob { __u32 blob_id; __u32 length;