drm: use ida to allocate connector ids
This makes it so that reloading a module does not cause all the connector ids to change, which are user-visible and sometimes used for configuration. Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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@ -186,29 +186,29 @@ static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
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struct drm_conn_prop_enum_list {
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int type;
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const char *name;
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int count;
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struct ida ida;
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};
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/*
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* Connector and encoder types.
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*/
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static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
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{ { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
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{ DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
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{ DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
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{ DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
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{ DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
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{ DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
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{ DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
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{ DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
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{ DRM_MODE_CONNECTOR_Component, "Component", 0 },
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{ DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 },
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{ DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 },
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{ DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 },
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{ DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 },
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{ DRM_MODE_CONNECTOR_TV, "TV", 0 },
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{ DRM_MODE_CONNECTOR_eDP, "eDP", 0 },
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{ DRM_MODE_CONNECTOR_VIRTUAL, "Virtual", 0},
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{ { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
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{ DRM_MODE_CONNECTOR_VGA, "VGA" },
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{ DRM_MODE_CONNECTOR_DVII, "DVI-I" },
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{ DRM_MODE_CONNECTOR_DVID, "DVI-D" },
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{ DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
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{ DRM_MODE_CONNECTOR_Composite, "Composite" },
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{ DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
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{ DRM_MODE_CONNECTOR_LVDS, "LVDS" },
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{ DRM_MODE_CONNECTOR_Component, "Component" },
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{ DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
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{ DRM_MODE_CONNECTOR_DisplayPort, "DP" },
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{ DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
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{ DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
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{ DRM_MODE_CONNECTOR_TV, "TV" },
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{ DRM_MODE_CONNECTOR_eDP, "eDP" },
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{ DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
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};
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static const struct drm_prop_enum_list drm_encoder_enum_list[] =
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@ -220,6 +220,22 @@ static const struct drm_prop_enum_list drm_encoder_enum_list[] =
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{ DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
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};
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void drm_connector_ida_init(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
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ida_init(&drm_connector_enum_list[i].ida);
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}
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void drm_connector_ida_destroy(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
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ida_destroy(&drm_connector_enum_list[i].ida);
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}
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const char *drm_get_encoder_name(const struct drm_encoder *encoder)
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{
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static char buf[32];
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@ -711,6 +727,8 @@ int drm_connector_init(struct drm_device *dev,
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int connector_type)
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{
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int ret;
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struct ida *connector_ida =
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&drm_connector_enum_list[connector_type].ida;
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drm_modeset_lock_all(dev);
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@ -723,7 +741,12 @@ int drm_connector_init(struct drm_device *dev,
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connector->funcs = funcs;
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connector->connector_type = connector_type;
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connector->connector_type_id =
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++drm_connector_enum_list[connector_type].count; /* TODO */
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ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
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if (connector->connector_type_id < 0) {
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ret = connector->connector_type_id;
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drm_mode_object_put(dev, &connector->base);
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goto out;
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}
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INIT_LIST_HEAD(&connector->probed_modes);
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INIT_LIST_HEAD(&connector->modes);
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connector->edid_blob_ptr = NULL;
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@ -764,6 +787,9 @@ void drm_connector_cleanup(struct drm_connector *connector)
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list_for_each_entry_safe(mode, t, &connector->modes, head)
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drm_mode_remove(connector, mode);
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ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
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connector->connector_type_id);
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drm_mode_object_put(dev, &connector->base);
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list_del(&connector->head);
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dev->mode_config.num_connector--;
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@ -226,6 +226,7 @@ static int __init drm_core_init(void)
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int ret = -ENOMEM;
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drm_global_init();
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drm_connector_ida_init();
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idr_init(&drm_minors_idr);
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if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops))
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@ -273,6 +274,7 @@ static void __exit drm_core_exit(void)
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unregister_chrdev(DRM_MAJOR, "drm");
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drm_connector_ida_destroy();
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idr_destroy(&drm_minors_idr);
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}
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@ -869,6 +869,8 @@ extern int drm_crtc_init(struct drm_device *dev,
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const struct drm_crtc_funcs *funcs);
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extern void drm_crtc_cleanup(struct drm_crtc *crtc);
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extern void drm_connector_ida_init(void);
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extern void drm_connector_ida_destroy(void);
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extern int drm_connector_init(struct drm_device *dev,
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struct drm_connector *connector,
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const struct drm_connector_funcs *funcs,
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