diff options
Diffstat (limited to 'linux-core/drm_crtc.c')
| -rw-r--r-- | linux-core/drm_crtc.c | 2383 |
1 files changed, 2383 insertions, 0 deletions
diff --git a/linux-core/drm_crtc.c b/linux-core/drm_crtc.c new file mode 100644 index 00000000..aa0c4a95 --- /dev/null +++ b/linux-core/drm_crtc.c @@ -0,0 +1,2383 @@ +/* + * Copyright (c) 2006-2007 Intel Corporation + * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> + * Copyright (c) 2008 Red Hat Inc. + * + * DRM core CRTC related functions + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting documentation, and + * that the name of the copyright holders not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. The copyright holders make no representations + * about the suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + * + * Authors: + * Keith Packard + * Eric Anholt <eric@anholt.net> + * Dave Airlie <airlied@linux.ie> + * Jesse Barnes <jesse.barnes@intel.com> + */ +#include <linux/list.h> +#include "drm.h" +#include "drmP.h" +#include "drm_crtc.h" + +struct drm_prop_enum_list { + int type; + char *name; +}; + +/* + * Global properties + */ +static struct drm_prop_enum_list drm_dpms_enum_list[] = +{ { DRM_MODE_DPMS_ON, "On" }, + { DRM_MODE_DPMS_STANDBY, "Standby" }, + { DRM_MODE_DPMS_SUSPEND, "Suspend" }, + { DRM_MODE_DPMS_OFF, "Off" } +}; + +char *drm_get_dpms_name(int val) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++) + if (drm_dpms_enum_list[i].type == val) + return drm_dpms_enum_list[i].name; + + return "unknown"; +} + +/* + * Optional properties + */ +static struct drm_prop_enum_list drm_scaling_mode_enum_list[] = +{ + { DRM_MODE_SCALE_NON_GPU, "Non-GPU" }, + { DRM_MODE_SCALE_FULLSCREEN, "Fullscreen" }, + { DRM_MODE_SCALE_NO_SCALE, "No scale" }, + { DRM_MODE_SCALE_ASPECT, "Aspect" }, +}; + +static struct drm_prop_enum_list drm_dithering_mode_enum_list[] = +{ + { DRM_MODE_DITHERING_OFF, "Off" }, + { DRM_MODE_DITHERING_ON, "On" }, +}; + +/* + * Non-global properties, but "required" for certain connectors. + */ +static struct drm_prop_enum_list drm_select_subconnector_enum_list[] = +{ + { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ + { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ + { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ + { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ + { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ + { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ +}; + +char *drm_get_select_subconnector_name(int val) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(drm_select_subconnector_enum_list); i++) + if (drm_select_subconnector_enum_list[i].type == val) + return drm_select_subconnector_enum_list[i].name; + + return "unknown"; +} + +static struct drm_prop_enum_list drm_subconnector_enum_list[] = +{ + { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ + { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ + { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ + { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ + { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ + { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ +}; + +char *drm_get_subconnector_name(int val) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(drm_subconnector_enum_list); i++) + if (drm_subconnector_enum_list[i].type == val) + return drm_subconnector_enum_list[i].name; + + return "unknown"; +} + +struct drm_conn_prop_enum_list { + int type; + char *name; + int count; +}; + +/* + * Connector and encoder types. + */ +static struct drm_conn_prop_enum_list drm_connector_enum_list[] = +{ { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 }, + { DRM_MODE_CONNECTOR_VGA, "VGA", 0 }, + { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 }, + { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 }, + { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 }, + { DRM_MODE_CONNECTOR_Composite, "Composite", 0 }, + { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 }, + { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 }, + { DRM_MODE_CONNECTOR_Component, "Component", 0 }, + { DRM_MODE_CONNECTOR_9PinDIN, "9-pin DIN", 0 }, + { DRM_MODE_CONNECTOR_DisplayPort, "DisplayPort", 0 }, + { DRM_MODE_CONNECTOR_HDMIA, "HDMI Type A", 0 }, + { DRM_MODE_CONNECTOR_HDMIB, "HDMI Type B", 0 }, +}; + +static struct drm_prop_enum_list drm_encoder_enum_list[] = +{ { DRM_MODE_ENCODER_NONE, "None" }, + { DRM_MODE_ENCODER_DAC, "DAC" }, + { DRM_MODE_ENCODER_TMDS, "TMDS" }, + { DRM_MODE_ENCODER_LVDS, "LVDS" }, + { DRM_MODE_ENCODER_TVDAC, "TV" }, +}; + +char *drm_get_encoder_name(struct drm_encoder *encoder) +{ + static char buf[32]; + + snprintf(buf, 32, "%s-%d", drm_encoder_enum_list[encoder->encoder_type].name, + encoder->base.id); + return buf; +} + +char *drm_get_connector_name(struct drm_connector *connector) +{ + static char buf[32]; + + snprintf(buf, 32, "%s-%d", drm_connector_enum_list[connector->connector_type].name, + connector->connector_type_id); + return buf; +} +EXPORT_SYMBOL(drm_get_connector_name); + +char *drm_get_connector_status_name(enum drm_connector_status status) +{ + if (status == connector_status_connected) + return "connected"; + else if (status == connector_status_disconnected) + return "disconnected"; + else + return "unknown"; +} + +/** + * drm_idr_get - allocate a new identifier + * @dev: DRM device + * @ptr: object pointer, used to generate unique ID + * + * LOCKING: + * Caller must hold DRM mode_config lock. + * + * Create a unique identifier based on @ptr in @dev's identifier space. Used + * for tracking modes, CRTCs and connectors. + * + * RETURNS: + * New unique (relative to other objects in @dev) integer identifier for the + * object. + */ +static int drm_mode_object_get(struct drm_device *dev, struct drm_mode_object *obj, uint32_t obj_type) +{ + int new_id = 0; + int ret; +again: + if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) { + DRM_ERROR("Ran out memory getting a mode number\n"); + return -EINVAL; + } + + ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id); + if (ret == -EAGAIN) + goto again; + + obj->id = new_id; + obj->type = obj_type; + return 0; +} + +/** + * drm_mode_object_put - free an identifer + * @dev: DRM device + * @id: ID to free + * + * LOCKING: + * Caller must hold DRM mode_config lock. + * + * Free @id from @dev's unique identifier pool. + */ +static void drm_mode_object_put(struct drm_device *dev, struct drm_mode_object *object) +{ + idr_remove(&dev->mode_config.crtc_idr, object->id); +} + +void *drm_mode_object_find(struct drm_device *dev, uint32_t id, uint32_t type) +{ + struct drm_mode_object *obj; + + obj = idr_find(&dev->mode_config.crtc_idr, id); + if (!obj || (obj->type != type) || (obj->id != id)) + return NULL; + + return obj; +} +EXPORT_SYMBOL(drm_mode_object_find); + +/** + * drm_crtc_from_fb - find the CRTC structure associated with an fb + * @dev: DRM device + * @fb: framebuffer in question + * + * LOCKING: + * Caller must hold mode_config lock. + * + * Find CRTC in the mode_config structure that matches @fb. + * + * RETURNS: + * Pointer to the CRTC or NULL if it wasn't found. + */ +struct drm_crtc *drm_crtc_from_fb(struct drm_device *dev, + struct drm_framebuffer *fb) +{ + struct drm_crtc *crtc; + + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { + if (crtc->fb == fb) + return crtc; + } + return NULL; +} + +/** + * drm_framebuffer_create - create a new framebuffer object + * @dev: DRM device + * + * LOCKING: + * Caller must hold mode config lock. + * + * Creates a new framebuffer objects and adds it to @dev's DRM mode_config. + * + * RETURNS: + * Pointer to new framebuffer or NULL on error. + */ +struct drm_framebuffer *drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb, + const struct drm_framebuffer_funcs *funcs) +{ + if(drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB)) + return NULL; + + fb->dev = dev; + fb->funcs = funcs; + dev->mode_config.num_fb++; + list_add(&fb->head, &dev->mode_config.fb_list); + + return fb; +} +EXPORT_SYMBOL(drm_framebuffer_init); + +/** + * drm_framebuffer_cleanup - remove a framebuffer object + * @fb: framebuffer to remove + * + * LOCKING: + * Caller must hold mode config lock. + * + * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes + * it, setting it to NULL. + */ +void drm_framebuffer_cleanup(struct drm_framebuffer *fb) +{ + struct drm_device *dev = fb->dev; + struct drm_crtc *crtc; + + /* remove from any CRTC */ + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { + if (crtc->fb == fb) + crtc->fb = NULL; + } + + drm_mode_object_put(dev, &fb->base); + list_del(&fb->head); + dev->mode_config.num_fb--; +} +EXPORT_SYMBOL(drm_framebuffer_cleanup); + +/** + * drm_crtc_init - Initialise a new CRTC object + * @dev: DRM device + * @crtc: CRTC object to init + * @funcs: callbacks for the new CRTC + * + * LOCKING: + * Caller must hold mode config lock. + * + * Inits a new object created as base part of an driver crtc object. + */ +void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, + const struct drm_crtc_funcs *funcs) +{ + crtc->dev = dev; + crtc->funcs = funcs; + + drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); + + list_add_tail(&crtc->head, &dev->mode_config.crtc_list); + dev->mode_config.num_crtc++; +} +EXPORT_SYMBOL(drm_crtc_init); + +/** + * drm_crtc_cleanup - Cleans up the core crtc usage. + * @crtc: CRTC to cleanup + * + * LOCKING: + * Caller must hold mode config lock. + * + * Cleanup @crtc. Removes from drm modesetting space + * does NOT free object, caller does that. + */ +void drm_crtc_cleanup(struct drm_crtc *crtc) +{ + struct drm_device *dev = crtc->dev; + + if (crtc->gamma_store) { + kfree(crtc->gamma_store); + crtc->gamma_store = NULL; + } + + drm_mode_object_put(dev, &crtc->base); + list_del(&crtc->head); + dev->mode_config.num_crtc--; +} +EXPORT_SYMBOL(drm_crtc_cleanup); + +/** + * drm_mode_probed_add - add a mode to the specified connector's probed mode list + * @connector: connector the new mode + * @mode: mode data + * + * LOCKING: + * Caller must hold mode config lock. + * + * Add @mode to @connector's mode list for later use. + */ +void drm_mode_probed_add(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + list_add(&mode->head, &connector->probed_modes); +} +EXPORT_SYMBOL(drm_mode_probed_add); + +/** + * drm_mode_remove - remove and free a mode + * @connector: connector list to modify + * @mode: mode to remove + * + * LOCKING: + * Caller must hold mode config lock. + * + * Remove @mode from @connector's mode list, then free it. + */ +void drm_mode_remove(struct drm_connector *connector, struct drm_display_mode *mode) +{ + list_del(&mode->head); + kfree(mode); +} +EXPORT_SYMBOL(drm_mode_remove); + +/** + * drm_connector_init - Init a preallocated connector + * @dev: DRM device + * @connector: the connector to init + * @funcs: callbacks for this connector + * @name: user visible name of the connector + * + * LOCKING: + * Caller must hold @dev's mode_config lock. + * + * Initialises a preallocated connector. Connectors should be + * subclassed as part of driver connector objects. + */ +void drm_connector_init(struct drm_device *dev, + struct drm_connector *connector, + const struct drm_connector_funcs *funcs, + int connector_type) +{ + connector->dev = dev; + connector->funcs = funcs; + drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR); + connector->connector_type = connector_type; + connector->connector_type_id = ++drm_connector_enum_list[connector_type].count; /* TODO */ + INIT_LIST_HEAD(&connector->user_modes); + INIT_LIST_HEAD(&connector->probed_modes); + INIT_LIST_HEAD(&connector->modes); + connector->edid_blob_ptr = NULL; + /* randr_connector? */ + /* connector_set_monitor(connector)? */ + /* check for connector_ignored(connector)? */ + + mutex_lock(&dev->mode_config.mutex); + list_add_tail(&connector->head, &dev->mode_config.connector_list); + dev->mode_config.num_connector++; + + drm_connector_attach_property(connector, dev->mode_config.edid_property, 0); + + drm_connector_attach_property(connector, dev->mode_config.dpms_property, 0); + + mutex_unlock(&dev->mode_config.mutex); +} +EXPORT_SYMBOL(drm_connector_init); + +/** + * drm_connector_cleanup - cleans up an initialised connector + * @connector: connector to cleanup + * + * LOCKING: + * Caller must hold @dev's mode_config lock. + * + * Cleans up the connector but doesn't free the object. + */ +void drm_connector_cleanup(struct drm_connector *connector) +{ + struct drm_device *dev = connector->dev; + struct drm_display_mode *mode, *t; + + list_for_each_entry_safe(mode, t, &connector->probed_modes, head) + drm_mode_remove(connector, mode); + + list_for_each_entry_safe(mode, t, &connector->modes, head) + drm_mode_remove(connector, mode); + + list_for_each_entry_safe(mode, t, &connector->user_modes, head) + drm_mode_remove(connector, mode); + + mutex_lock(&dev->mode_config.mutex); + drm_mode_object_put(dev, &connector->base); + list_del(&connector->head); + mutex_unlock(&dev->mode_config.mutex); +} +EXPORT_SYMBOL(drm_connector_cleanup); + +void drm_encoder_init(struct drm_device *dev, + struct drm_encoder *encoder, + const struct drm_encoder_funcs *funcs, + int encoder_type) +{ + encoder->dev = dev; + + drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER); + encoder->encoder_type = encoder_type; + encoder->funcs = funcs; + + mutex_lock(&dev->mode_config.mutex); + list_add_tail(&encoder->head, &dev->mode_config.encoder_list); + dev->mode_config.num_encoder++; + + mutex_unlock(&dev->mode_config.mutex); +} +EXPORT_SYMBOL(drm_encoder_init); + +void drm_encoder_cleanup(struct drm_encoder *encoder) +{ + struct drm_device *dev = encoder->dev; + mutex_lock(&dev->mode_config.mutex); + drm_mode_object_put(dev, &encoder->base); + list_del(&encoder->head); + mutex_unlock(&dev->mode_config.mutex); +} +EXPORT_SYMBOL(drm_encoder_cleanup); + +/** + * drm_mode_create - create a new display mode + * @dev: DRM device + * + * LOCKING: + * None. + * + * Create a new drm_display_mode, give it an ID, and return it. + * + * RETURNS: + * Pointer to new mode on success, NULL on error. + */ +struct drm_display_mode *drm_mode_create(struct drm_device *dev) +{ + struct drm_display_mode *nmode; + + nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL); + if (!nmode) + return NULL; + + drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE); + return nmode; +} +EXPORT_SYMBOL(drm_mode_create); + +/** + * drm_mode_destroy - remove a mode + * @dev: DRM device + * @mode: mode to remove + * + * LOCKING: + * Caller must hold mode config lock. + * + * Free @mode's unique identifier, then free it. + */ +void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode) +{ + drm_mode_object_put(dev, &mode->base); + + kfree(mode); +} +EXPORT_SYMBOL(drm_mode_destroy); + +static int drm_mode_create_standard_connector_properties(struct drm_device *dev) +{ + int i; + + /* + * Standard properties (apply to all connectors) + */ + dev->mode_config.edid_property = + drm_property_create(dev, DRM_MODE_PROP_BLOB | DRM_MODE_PROP_IMMUTABLE, + "EDID", 0); + + dev->mode_config.dpms_property = + drm_property_create(dev, DRM_MODE_PROP_ENUM, + "DPMS", ARRAY_SIZE(drm_dpms_enum_list)); + for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++) + drm_property_add_enum(dev->mode_config.dpms_property, i, drm_dpms_enum_list[i].type, drm_dpms_enum_list[i].name); + + return 0; +} + +/** + * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties + * @dev: DRM device + * + * Called by a driver the first time a DVI-I connector is made. + */ +int drm_mode_create_dvi_i_properties(struct drm_device *dev) +{ + int i; + + if (dev->mode_config.dvi_i_select_subconnector_property) + return 0; + + dev->mode_config.dvi_i_select_subconnector_property = drm_property_create(dev, DRM_MODE_PROP_ENUM, + "select subconnector", 3); + /* add enum element 0-2 */ + for (i = 0; i < 3; i++) + drm_property_add_enum(dev->mode_config.dvi_i_select_subconnector_property, i, drm_select_subconnector_enum_list[i].type, + drm_select_subconnector_enum_list[i].name); + + /* This is a property which indicates the most likely thing to be connected. */ + dev->mode_config.dvi_i_subconnector_property = drm_property_create(dev, DRM_MODE_PROP_ENUM | DRM_MODE_PROP_IMMUTABLE, + "subconnector", 3); + /* add enum element 0-2 */ + for (i = 0; i < 3; i++) + drm_property_add_enum(dev->mode_config.dvi_i_subconnector_property, i, drm_subconnector_enum_list[i].type, + drm_subconnector_enum_list[i].name); + + return 0; +} +EXPORT_SYMBOL(drm_mode_create_dvi_i_properties); + +/** + * drm_create_tv_properties - create TV specific connector properties + * @dev: DRM device + * @num_modes: number of different TV formats (modes) supported + * @modes: array of pointers to strings containing name of each format + * + * Called by a driver's TV initialization routine, this function creates + * the TV specific connector properties for a given device. Caller is + * responsible for allocating a list of format names and passing them to + * this routine. + */ +int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes, + char *modes[]) +{ + int i; + + if (dev->mode_config.tv_select_subconnector_property) /* already done */ + return 0; + + dev->mode_config.tv_select_subconnector_property = drm_property_create(dev, DRM_MODE_PROP_ENUM, + "select subconnector", 4); + /* add enum element 0 */ + drm_property_add_enum(dev->mode_config.tv_select_subconnector_property, 0, drm_select_subconnector_enum_list[0].type, + drm_select_subconnector_enum_list[0].name); + /* add enum element 3-5 */ + for (i = 1; i < 4; i++) + drm_property_add_enum(dev->mode_config.tv_select_subconnector_property, i, drm_select_subconnector_enum_list[i + 2].type, + drm_select_subconnector_enum_list[i + 2].name); + + /* This is a property which indicates the most likely thing to be connected. */ + dev->mode_config.tv_subconnector_property = drm_property_create(dev, DRM_MODE_PROP_ENUM | DRM_MODE_PROP_IMMUTABLE, + "subconnector", 4); + /* add enum element 0 */ + drm_property_add_enum(dev->mode_config.tv_subconnector_property, 0, drm_subconnector_enum_list[0].type, + drm_subconnector_enum_list[0].name); + /* add enum element 3-5 */ + for (i = 1; i < 4; i++) + drm_property_add_enum(dev->mode_config.tv_subconnector_property, i, drm_subconnector_enum_list[i + 2].type, + drm_subconnector_enum_list[i + 2].name); + + dev->mode_config.tv_left_margin_property = + drm_property_create(dev, DRM_MODE_PROP_RANGE, + "left margin", 2); + dev->mode_config.tv_left_margin_property->values[0] = 0; + dev->mode_config.tv_left_margin_property->values[1] = 100; + + dev->mode_config.tv_right_margin_property = + drm_property_create(dev, DRM_MODE_PROP_RANGE, + "right margin", 2); + dev->mode_config.tv_right_margin_property->values[0] = 0; + dev->mode_config.tv_right_margin_property->values[1] = 100; + + dev->mode_config.tv_top_margin_property = + drm_property_create(dev, DRM_MODE_PROP_RANGE, + "top margin", 2); + dev->mode_config.tv_top_margin_property->values[0] = 0; + dev->mode_config.tv_top_margin_property->values[1] = 100; + + dev->mode_config.tv_bottom_margin_property = + drm_property_create(dev, DRM_MODE_PROP_RANGE, + "bottom margin", 2); + dev->mode_config.tv_bottom_margin_property->values[0] = 0; + dev->mode_config.tv_bottom_margin_property->values[1] = 100; + + dev->mode_config.tv_mode_property = + drm_property_create(dev, DRM_MODE_PROP_ENUM, + "mode", num_modes); + for (i = 0; i < num_modes; i++) + drm_property_add_enum(dev->mode_config.tv_mode_property, i, + i, modes[i]); + + return 0; +} +EXPORT_SYMBOL(drm_mode_create_tv_properties); + +/** + * drm_mode_create_scaling_mode_property - create scaling mode property + * @dev: DRM device + * + * Called by a driver the first time it's needed, must be attached to desired connectors. + */ +int drm_mode_create_scaling_mode_property(struct drm_device *dev) +{ + int i; + + if (dev->mode_config.scaling_mode_property) /* already done */ + return 0; + + dev->mode_config.scaling_mode_property = + drm_property_create(dev, DRM_MODE_PROP_ENUM, + "scaling mode", ARRAY_SIZE(drm_scaling_mode_enum_list)); + for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++) + drm_property_add_enum(dev->mode_config.scaling_mode_property, i, drm_scaling_mode_enum_list[i].type, drm_scaling_mode_enum_list[i].name); + + return 0; +} +EXPORT_SYMBOL(drm_mode_create_scaling_mode_property); + +/** + * drm_mode_create_dithering_property - create dithering property + * @dev: DRM device + * + * Called by a driver the first time it's needed, must be attached to desired connectors. + */ +int drm_mode_create_dithering_property(struct drm_device *dev) +{ + int i; + + if (dev->mode_config.dithering_mode_property) /* already done */ + return 0; + + dev->mode_config.dithering_mode_property = + drm_property_create(dev, DRM_MODE_PROP_ENUM, + "dithering", ARRAY_SIZE(drm_dithering_mode_enum_list)); + for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++) + drm_property_add_enum(dev->mode_config.dithering_mode_property, i, drm_dithering_mode_enum_list[i].type, drm_dithering_mode_enum_list[i].name); + + return 0; +} +EXPORT_SYMBOL(drm_mode_create_dithering_property); + +/** + * drm_mode_config_init - initialize DRM mode_configuration structure + * @dev: DRM device + * + * LOCKING: + * None, should happen single threaded at init time. + * + * Initialize @dev's mode_config structure, used for tracking the graphics + * configuration of @dev. + */ +void drm_mode_config_init(struct drm_device *dev) +{ + mutex_init(&dev->mode_config.mutex); + INIT_LIST_HEAD(&dev->mode_config.fb_list); + INIT_LIST_HEAD(&dev->mode_config.fb_kernel_list); + INIT_LIST_HEAD(&dev->mode_config.crtc_list); + INIT_LIST_HEAD(&dev->mode_config.connector_list); + INIT_LIST_HEAD(&dev->mode_config.encoder_list); + INIT_LIST_HEAD(&dev->mode_config.property_list); + INIT_LIST_HEAD(&dev->mode_config.property_blob_list); + idr_init(&dev->mode_config.crtc_idr); + + drm_mode_create_standard_connector_properties(dev); + + /* Just to be sure */ + dev->mode_config.num_fb = 0; + dev->mode_config.num_connector = 0; + dev->mode_config.num_crtc = 0; + dev->mode_config.num_encoder = 0; + dev->mode_config.hotplug_counter = 0; +} +EXPORT_SYMBOL(drm_mode_config_init); + +int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group) +{ + uint32_t total_objects = 0; + + total_objects += dev->mode_config.num_crtc; + total_objects += dev->mode_config.num_connector; + total_objects += dev->mode_config.num_encoder; + + if (total_objects == 0) + return -EINVAL; + + group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL); + if (!group->id_list) + return -ENOMEM; + + group->num_crtcs = 0; + group->num_connectors = 0; + group->num_encoders = 0; + return 0; +} + +int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_mode_group *group) +{ + struct drm_crtc *crtc; + struct drm_encoder *encoder; + struct drm_connector *connector; + int ret; + + if ((ret = drm_mode_group_init(dev, group))) + return ret; + + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) + group->id_list[group->num_crtcs++] = crtc->base.id; + + list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) + group->id_list[group->num_crtcs + group->num_encoders++] = encoder->base.id; + + list_for_each_entry(connector, &dev->mode_config.connector_list, head) + group->id_list[group->num_crtcs + group->num_encoders + group->num_connectors++] = connector->base.id; + + return 0; +} + +/** + * drm_mode_config_cleanup - free up DRM mode_config info + * @dev: DRM device + * + * LOCKING: + * Caller must hold mode config lock. + * + * Free up all the connectors and CRTCs associated with this DRM device, then + * free up the framebuffers and associated buffer objects. + * + * FIXME: cleanup any dangling user buffer objects too + */ +void drm_mode_config_cleanup(struct drm_device *dev) +{ + struct drm_connector *connector, *ot; + struct drm_crtc *crtc, *ct; + struct drm_encoder *encoder, *enct; + struct drm_framebuffer *fb, *fbt; + struct drm_property *property, *pt; + + list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list, head) { + encoder->funcs->destroy(encoder); + } + + list_for_each_entry_safe(connector, ot, &dev->mode_config.connector_list, head) { + connector->funcs->destroy(connector); + } + + list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, head) { + drm_property_destroy(dev, property); + } + + list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) { + fb->funcs->destroy(fb); + } + + list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) { + crtc->funcs->destroy(crtc); + } + +} +EXPORT_SYMBOL(drm_mode_config_cleanup); + +/** + * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo + * @out: drm_mode_modeinfo struct to return to the user + * @in: drm_display_mode to use + * + * LOCKING: + * None. + * + * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to + * the user. + */ +void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out, struct drm_display_mode *in) +{ + out->clock = in->clock; + out->hdisplay = in->hdisplay; + out->hsync_start = in->hsync_start; + out->hsync_end = in->hsync_end; + out->htotal = in->htotal; + out->hskew = in->hskew; + out->vdisplay = in->vdisplay; + out->vsync_start = in->vsync_start; + out->vsync_end = in->vsync_end; + out->vtotal = in->vtotal; + out->vscan = in->vscan; + out->vrefresh = in->vrefresh; + out->flags = in->flags; + out->type = in->type; + strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); + out->name[DRM_DISPLAY_MODE_LEN-1] = 0; +} + +/** + * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode + * @out: drm_display_mode to return to the user + * @in: drm_mode_modeinfo to use + * + * LOCKING: + * None. + * + * Convert a drmo_mode_modeinfo into a drm_display_mode structure to return to + * the caller. + */ +void drm_crtc_convert_umode(struct drm_display_mode *out, struct drm_mode_modeinfo *in) +{ + out->clock = in->clock; + out->hdisplay = in->hdisplay; + out->hsync_start = in->hsync_start; + out->hsync_end = in->hsync_end; + out->htotal = in->htotal; + out->hskew = in->hskew; + out->vdisplay = in->vdisplay; + out->vsync_start = in->vsync_start; + out->vsync_end = in->vsync_end; + out->vtotal = in->vtotal; + out->vscan = in->vscan; + out->vrefresh = in->vrefresh; + out->flags = in->flags; + out->type = in->type; + strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); + out->name[DRM_DISPLAY_MODE_LEN-1] = 0; +} + +/** + * drm_mode_getresources - get graphics configuration + * @inode: inode from the ioctl + * @filp: file * from the ioctl + * @cmd: cmd from ioctl + * @arg: arg from ioctl + * + * LOCKING: + * Takes mode config lock. + * + * Construct a set of configuration description structures and return + * them to the user, including CRTC, connector and framebuffer configuration. + * + * Called by the user via ioctl. + * + * RETURNS: + * Zero on success, errno on failure. + */ +int drm_mode_getresources(struct drm_device *dev, + void *data, struct drm_file *file_priv) +{ + struct drm_mode_card_res *card_res = data; + struct list_head *lh; + struct drm_framebuffer *fb; + struct drm_connector *connector; + struct drm_crtc *crtc; + struct drm_encoder *encoder; + int ret = 0; + int connector_count = 0; + int crtc_count = 0; + int fb_count = 0; + int encoder_count = 0; + int copied = 0, i; + uint32_t __user *fb_id; + uint32_t __user *crtc_id; + uint32_t __user *connector_id; + uint32_t __user *encoder_id; + struct drm_mode_group *mode_group; + + mutex_lock(&dev->mode_config.mutex); + + /* for the non-control nodes we need to limit the list of resources by IDs in the + group list for this node */ + list_for_each(lh, &file_priv->fbs) + fb_count++; + + mode_group = &file_priv->master->minor->mode_group; + if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { + + list_for_each(lh, &dev->mode_config.crtc_list) + crtc_count++; + + list_for_each(lh, &dev->mode_config.connector_list) + connector_count++; + + list_for_each(lh, &dev->mode_config.encoder_list) + encoder_count++; + } else { + + crtc_count = mode_group->num_crtcs; + connector_count = mode_group->num_connectors; + encoder_count = mode_group->num_encoders; + } + + card_res->max_height = dev->mode_config.max_height; + card_res->min_height = dev->mode_config.min_height; + card_res->max_width = dev->mode_config.max_width; + card_res->min_width = dev->mode_config.min_width; + + /* handle this in 4 parts */ + /* FBs */ + if (card_res->count_fbs >= fb_count) { + copied = 0; + fb_id = (uint32_t *)(unsigned long)card_res->fb_id_ptr; + list_for_each_entry(fb, &file_priv->fbs, head) { + if (put_user(fb->base.id, fb_id + copied)) { + ret = -EFAULT; + goto out; + } + copied++; + } + } + card_res->count_fbs = fb_count; + + /* CRTCs */ + if (card_res->count_crtcs >= crtc_count) { + copied = 0; + crtc_id = (uint32_t *)(unsigned long)card_res->crtc_id_ptr; + if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { + DRM_DEBUG("CRTC ID is %d\n", crtc->base.id); + if (put_user(crtc->base.id, crtc_id + copied)) { + ret = -EFAULT; + goto out; + } + copied++; + } + } else { + for (i = 0; i < mode_group->num_crtcs; i++) { + if (put_user(mode_group->id_list[i], crtc_id + copied)) { + ret = -EFAULT; + goto out; + } + copied++; + } + } + } + card_res->count_crtcs = crtc_count; + + /* Encoders */ + if (card_res->count_encoders >= encoder_count) { + copied = 0; + encoder_id = (uint32_t *)(unsigned long)card_res->encoder_id_ptr; + if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { + list_for_each_entry(encoder, &dev->mode_config.encoder_list, + head) { + DRM_DEBUG("ENCODER ID is %d\n", encoder->base.id); + if (put_user(encoder->base.id, encoder_id + copied)) { + ret = -EFAULT; + goto out; + } + copied++; + } + } else { + for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) { + if (put_user(mode_group->id_list[i], encoder_id + copied)) { + ret = -EFAULT; + goto out; + } + copied++; + } + + } + } + card_res->count_encoders = encoder_count; + + /* Connectors */ + if (card_res->count_connectors >= connector_count) { + copied = 0; + connector_id = (uint32_t *)(unsigned long)card_res->connector_id_ptr; + if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { + list_for_each_entry(connector, &dev->mode_config.connector_list, + head) { + DRM_DEBUG("CONNECTOR ID is %d\n", connector->base.id); + if (put_user(connector->base.id, connector_id + copied)) { + ret = -EFAULT; + goto out; + } + copied++; + } + } else { + int start = mode_group->num_crtcs + mode_group->num_encoders; + for (i = start; i < start + mode_group->num_connectors; i++) { + if (put_user(mode_group->id_list[i], connector_id + copied)) { + ret = -EFAULT; + goto out; + } + copied++; + } + } + } + card_res->count_connectors = connector_count; + + DRM_DEBUG("Counted %d %d %d\n", card_res->count_crtcs, + card_res->count_connectors, card_res->count_encoders); + +out: + mutex_unlock(&dev->mode_config.mutex); + return ret; +} + +/** + * drm_mode_getcrtc - get CRTC configuration + * @inode: inode from the ioctl + * @filp: file * from the ioctl + * @cmd: cmd from ioctl + * @arg: arg from ioctl + * + * LOCKING: + * Caller? (FIXME) + * + * Construct a CRTC configuration structure to return to the user. + * + * Called by the user via ioctl. + * + * RETURNS: + * Zero on success, errno on failure. + */ +int drm_mode_getcrtc(struct drm_device *dev, + void *data, struct drm_file *file_priv) +{ + struct drm_mode_crtc *crtc_resp = data; + struct drm_crtc *crtc; + struct drm_mode_object *obj; + int ret = 0; + + mutex_lock(&dev->mode_config.mutex); + + obj = drm_mode_object_find(dev, crtc_resp->crtc_id, DRM_MODE_OBJECT_CRTC); + if (!obj) { + ret = -EINVAL; + goto out; + } + crtc = obj_to_crtc(obj); + + crtc_resp->x = crtc->x; + crtc_resp->y = crtc->y; + crtc_resp->gamma_size = crtc->gamma_size; + if (crtc->fb) + crtc_resp->fb_id = crtc->fb->base.id; + else + crtc_resp->fb_id = 0; + + if (crtc->enabled) { + + drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode); + crtc_resp->mode_valid = 1; + + } else { + crtc_resp->mode_valid = 0; + } + +out: + mutex_unlock(&dev->mode_config.mutex); + return ret; +} + +/** + * drm_mode_getconnector - get connector configuration + * @inode: inode from the ioctl + * @filp: file * from the ioctl + * @cmd: cmd from ioctl + * @arg: arg from ioctl + * + * LOCKING: + * Caller? (FIXME) + * + * Construct a connector configuration structure to return to the user. + * + * Called by the user via ioctl. + * + * RETURNS: + * Zero on success, errno on failure. + */ +int drm_mode_getconnector(struct drm_device *dev, + void *data, struct drm_file *file_priv) +{ + struct drm_mode_get_connector *out_resp = data; + struct drm_mode_object *obj; + struct drm_connector *connector; + struct drm_display_mode *mode; + int mode_count = 0; + int props_count = 0; + int encoders_count = 0; + int ret = 0; + int copied = 0; + int i; + struct drm_mode_modeinfo u_mode; + struct drm_mode_modeinfo __user *mode_ptr; + uint32_t __user *prop_ptr; + uint64_t __user *prop_values; + uint32_t __user *encoder_ptr; + + memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo)); + + DRM_DEBUG("connector id %d:\n", out_resp->connector_id); + + mutex_lock(&dev->mode_config.mutex); + + obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR); + if (!obj) { + ret = -EINVAL; + goto out; + } + connector = obj_to_connector(obj); + + for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) { + if (connector->property_ids[i] != 0) { + props_count++; + } + } + + for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { + if (connector->encoder_ids[i] != 0) { + encoders_count++; + } + } + + if (out_resp->count_modes == 0) { + connector->funcs->fill_modes(connector, dev->mode_config.max_width, dev->mode_config.max_height); + } + + /* delayed so we get modes regardless of pre-fill_modes state */ + list_for_each_entry(mode, &connector->modes, head) + mode_count++; + + out_resp->connector_id = connector->base.id; + out_resp->connector_type = connector->connector_type; + out_resp->connector_type_id = connector->connector_type_id; + out_resp->mm_width = connector->display_info.width_mm; + out_resp->mm_height = connector->display_info.height_mm; + out_resp->subpixel = connector->display_info.subpixel_order; + out_resp->connection = connector->status; + if (connector->encoder) + out_resp->encoder_id = connector->encoder->base.id; + else + out_resp->encoder_id = 0; + + /* this ioctl is called twice, once to determine how much space is needed, and the 2nd time to fill it */ + if ((out_resp->count_modes >= mode_count) && mode_count) { + copied = 0; + mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr; + list_for_each_entry(mode, &connector->modes, head) { + drm_crtc_convert_to_umode(&u_mode, mode); + if (copy_to_user(mode_ptr + copied, + &u_mode, sizeof(u_mode))) { + ret = -EFAULT; + goto out; + } + copied++; + } + } + out_resp->count_modes = mode_count; + + if ((out_resp->count_props >= props_count) && props_count) { + copied = 0; + prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr); + prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr); + for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) { + if (connector->property_ids[i] != 0) { + if (put_user(connector->property_ids[i], prop_ptr + copied)) { + ret = -EFAULT; + goto out; + } + + if (put_user(connector->property_values[i], prop_values + copied)) { + ret = -EFAULT; + goto out; + } + copied++; + } + } + } + out_resp->count_props = props_count; + + if ((out_resp->count_encoders >= encoders_count) && encoders_count) { + copied = 0; + encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr); + for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { + if (connector->encoder_ids[i] != 0) { + if (put_user(connector->encoder_ids[i], encoder_ptr + copied)) { + ret = -EFAULT; + goto out; + } + copied++; + } + } + } + out_resp->count_encoders = encoders_count; + +out: + mutex_unlock(&dev->mode_config.mutex); + return ret; +} + +int drm_mode_getencoder(struct drm_device *dev, + void *data, struct drm_file *file_priv) +{ + struct drm_mode_get_encoder *enc_resp = data; + struct drm_mode_object *obj; + struct drm_encoder *encoder; + int ret = 0; + + mutex_lock(&dev->mode_config.mutex); + obj = drm_mode_object_find(dev, enc_resp->encoder_id, DRM_MODE_OBJECT_ENCODER); + if (!obj) { + ret = -EINVAL; + goto out; + } + encoder = obj_to_encoder(obj); + + if (encoder->crtc) + enc_resp->crtc_id = encoder->crtc->base.id; + else + enc_resp->crtc_id = 0; + enc_resp->encoder_type = encoder->encoder_type; + enc_resp->encoder_id = encoder->base.id; + enc_resp->possible_crtcs = encoder->possible_crtcs; + enc_resp->possible_clones = encoder->possible_clones; + +out: + mutex_unlock(&dev->mode_config.mutex); + return ret; +} + +/** + * drm_mode_setcrtc - set CRTC configuration + * @inode: inode from the ioctl + * @filp: file * from the ioctl + * @cmd: cmd from ioctl + * @arg: arg from ioctl + * + * LOCKING: + * Caller? (FIXME) + * + * Build a new CRTC configuration based on user request. + * + * Called by the user via ioctl. + * + * RETURNS: + * Zero on success, errno on failure. + */ +int drm_mode_setcrtc(struct drm_device *dev, + void *data, struct drm_file *file_priv) +{ + struct drm_mode_crtc *crtc_req = data; + struct drm_mode_object *obj; + struct drm_crtc *crtc, *crtcfb; + struct drm_connector **connector_set = NULL, *connector; + struct drm_framebuffer *fb = NULL; + struct drm_display_mode *mode = NULL; + struct drm_mode_set set; + uint32_t __user *set_connectors_ptr; + int ret = 0; + int i; + + mutex_lock(&dev->mode_config.mutex); + obj = drm_mode_object_find(dev, crtc_req->crtc_id, DRM_MODE_OBJECT_CRTC); + if (!obj) { + DRM_DEBUG("Unknown CRTC ID %d\n", crtc_req->crtc_id); + ret = -EINVAL; + goto out; + } + crtc = obj_to_crtc(obj); + + if (crtc_req->mode_valid) { + /* If we have a mode we need a framebuffer. */ + /* If we pass -1, set the mode with the currently bound fb */ + if (crtc_req->fb_id == -1) { + list_for_each_entry(crtcfb, &dev->mode_config.crtc_list, head) { + if (crtcfb == crtc) { + DRM_DEBUG("Using current fb for setmode\n"); + fb = crtc->fb; + } + } + } else { + obj = drm_mode_object_find(dev, crtc_req->fb_id, DRM_MODE_OBJECT_FB); + if (!obj) { + DRM_DEBUG("Unknown FB ID%d\n", crtc_req->fb_id); + ret = -EINVAL; + goto out; + } + fb = obj_to_fb(obj); + } + + mode = drm_mode_create(dev); + drm_crtc_convert_umode(mode, &crtc_req->mode); + drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); + } + + if (crtc_req->count_connectors == 0 && mode) { + DRM_DEBUG("Count connectors is 0 but mode set\n"); + ret = -EINVAL; + goto out; + } + + if (crtc_req->count_connectors > 0 && !mode && !fb) { + DRM_DEBUG("Count connectors is %d but no mode or fb set\n", crtc_req->count_connectors); + ret = -EINVAL; + goto out; + } + + if (crtc_req->count_connectors > 0) { + u32 out_id; + /* Maybe we should check that count_connectors is a sensible value. */ + connector_set = kmalloc(crtc_req->count_connectors * + sizeof(struct drm_connector *), GFP_KERNEL); + if (!connector_set) { + ret = -ENOMEM; + goto out; + } + + for (i = 0; i < crtc_req->count_connectors; i++) { + set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr; + if (get_user(out_id, &set_connectors_ptr[i])) { + ret = -EFAULT; + goto out; + } + + obj = drm_mode_object_find(dev, out_id, DRM_MODE_OBJECT_CONNECTOR); + if (!obj) { + DRM_DEBUG("Connector id %d unknown\n", out_id); + ret = -EINVAL; + goto out; + } + connector = obj_to_connector(obj); + + connector_set[i] = connector; + } + } + + set.crtc = crtc; + set.x = crtc_req->x; + set.y = crtc_req->y; + set.mode = mode; + set.connectors = connector_set; + set.num_connectors = crtc_req->count_connectors; + set.fb = fb; + ret = crtc->funcs->set_config(&set); + +out: + kfree(connector_set); + mutex_unlock(&dev->mode_config.mutex); + return ret; +} + +int drm_mode_cursor_ioctl(struct drm_device *dev, + void *data, struct drm_file *file_priv) +{ + struct drm_mode_cursor *req = data; + struct drm_mode_object *obj; + struct drm_crtc *crtc; + int ret = 0; + + DRM_DEBUG("\n"); + + if (!req->flags) { + DRM_ERROR("no operation set\n"); + return -EINVAL; + } + + mutex_lock(&dev->mode_config.mutex); + obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC); + if (!obj) { + DRM_DEBUG("Unknown CRTC ID %d\n", req->crtc_id); + ret = -EINVAL; + goto out; + } + crtc = obj_to_crtc(obj); + + if (req->flags & DRM_MODE_CURSOR_BO) { + /* Turn of the cursor if handle is 0 */ + if (crtc->funcs->cursor_set) { + ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle, req->width, req->height); + } else { + DRM_ERROR("crtc does not support cursor\n"); + ret = -EFAULT; + goto out; + } + } + + if (req->flags & DRM_MODE_CURSOR_MOVE) { + if (crtc->funcs->cursor_move) { + ret = crtc->funcs->cursor_move(crtc, req->x, req->y); + } else { + DRM_ERROR("crtc does not support cursor\n"); + ret = -EFAULT; + goto out; + } + } +out: + mutex_unlock(&dev->mode_config.mutex); + return ret; +} + +/** + * drm_mode_addfb - add an FB to the graphics configuration + * @inode: inode from the ioctl + * @filp: file * from the ioctl + * @cmd: cmd from ioctl + * @arg: arg from ioctl + * + * LOCKING: + * Takes mode config lock. + * + * Add a new FB to the specified CRTC, given a user request. + * + * Called by the user via ioctl. + * + * RETURNS: + * Zero on success, errno on failure. + */ +int drm_mode_addfb(struct drm_device *dev, + void *data, struct drm_file *file_priv) +{ + struct drm_mode_fb_cmd *r = data; + struct drm_mode_config *config = &dev->mode_config; + struct drm_framebuffer *fb; + int ret = 0; + + if ((config->min_width > r->width) || (r->width > config->max_width)) { + DRM_ERROR("mode new framebuffer width not within limits\n"); + return -EINVAL; + } + if ((config->min_height > r->height) || (r->height > config->max_height)) { + DRM_ERROR("mode new framebuffer height not within limits\n"); + return -EINVAL; + } + + mutex_lock(&dev->mode_config.mutex); + + /* TODO check buffer is sufficently large */ + /* TODO setup destructor callback */ + + fb = dev->mode_config.funcs->fb_create(dev, file_priv, r); + if (!fb) { + DRM_ERROR("could not create framebuffer\n"); + ret = -EINVAL; + goto out; + } + + r->fb_id = fb->base.id; + list_add(&fb->filp_head, &file_priv->fbs); + +out: + mutex_unlock(&dev->mode_config.mutex); + return ret; +} + +/** + * drm_mode_rmfb - remove an FB from the configuration + * @inode: inode from the ioctl + * @filp: file * from the ioctl + * @cmd: cmd from ioctl + * @arg: arg from ioctl + * + * LOCKING: + * Takes mode config lock. + * + * Remove the FB specified by the user. + * + * Called by the user via ioctl. + * + * RETURNS: + * Zero on success, errno on failure. + */ +int drm_mode_rmfb(struct drm_device *dev, + void *data, struct drm_file *file_priv) +{ + struct drm_mode_object *obj; + struct drm_framebuffer *fb = NULL; + struct drm_framebuffer *fbl = NULL; + uint32_t *id = data; + int ret = 0; + int found = 0; + + mutex_lock(&dev->mode_config.mutex); + obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB); + /* TODO check that we realy get a framebuffer back. */ + if (!obj) { + DRM_ERROR("mode invalid framebuffer id\n"); + ret = -EINVAL; + goto out; + } + fb = obj_to_fb(obj); + + list_for_each_entry(fbl, &file_priv->fbs, filp_head) + if (fb == fbl) + found = 1; + + if (!found) { + DRM_ERROR("tried to remove a fb that we didn't own\n"); + ret = -EINVAL; + goto out; + } + + /* TODO release all crtc connected to the framebuffer */ + /* TODO unhock the destructor from the buffer object */ + + list_del(&fb->filp_head); + fb->funcs->destroy(fb); + +out: + mutex_unlock(&dev->mode_config.mutex); + return ret; +} + +/** + * drm_mode_getfb - get FB info + * @inode: inode from the ioctl + * @filp: file * from the ioctl + * @cmd: cmd from ioctl + * @arg: arg from ioctl + * + * LOCKING: + * Caller? (FIXME) + * + * Lookup the FB given its ID and return info about it. + * + * Called by the user via ioctl. + * + * RETURNS: + * Zero on success, errno on failure. + */ +int drm_mode_getfb(struct drm_device *dev, + void *data, struct drm_file *file_priv) +{ + struct drm_mode_fb_cmd *r = data; + struct drm_mode_object *obj; + struct drm_framebuffer *fb; + int ret = 0; + + mutex_lock(&dev->mode_config.mutex); + obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB); + if (!obj) { + DRM_ERROR("invalid framebuffer id\n"); + ret = -EINVAL; + goto out; + } + fb = obj_to_fb(obj); + + r->height = fb->height; + r->width = fb->width; + r->depth = fb->depth; + r->bpp = fb->bits_per_pixel; + r->pitch = fb->pitch; + fb->funcs->create_handle(fb, file_priv, &r->handle); + +out: + mutex_unlock(&dev->mode_config.mutex); + return ret; +} + +/** + * drm_fb_release - remove and free the FBs on this file + * @filp: file * from the ioctl + * + * LOCKING: + * Takes mode config lock. + * + * Destroy all the FBs associated with @filp. + * + * Called by the user via ioctl. + * + * RETURNS: + * Zero on success, errno on failure. + */ +void drm_fb_release(struct file *filp) +{ + struct drm_file *priv = filp->private_data; + struct drm_device *dev = priv->minor->dev; + struct drm_framebuffer *fb, *tfb; + + mutex_lock(&dev->mode_config.mutex); + list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) { + list_del(&fb->filp_head); + fb->funcs->destroy(fb); + } + mutex_unlock(&dev->mode_config.mutex); +} + +/* + * + */ + +static int drm_mode_attachmode(struct drm_device *dev, + struct drm_connector *connector, + struct drm_display_mode *mode) +{ + int ret = 0; + + list_add_tail(&mode->head, &connector->user_modes); + return ret; +} + +int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc, + struct drm_display_mode *mode) +{ + struct drm_connector *connector; + int ret = 0; + struct drm_display_mode *dup_mode; + int need_dup = 0; + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + if (!connector->encoder) + break; + if (connector->encoder->crtc == crtc) { + if (need_dup) + dup_mode = drm_mode_duplicate(dev, mode); + else + dup_mode = mode; + ret = drm_mode_attachmode(dev, connector, dup_mode); + if (ret) + return ret; + need_dup = 1; + } + } + return 0; +} +EXPORT_SYMBOL(drm_mode_attachmode_crtc); + +static int drm_mode_detachmode(struct drm_device *dev, + struct drm_connector *connector, + struct drm_display_mode *mode) +{ + int found = 0; + int ret = 0; + struct drm_display_mode *match_mode, *t; + + list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) { + if (drm_mode_equal(match_mode, mode)) { + list_del(&match_mode->head); + drm_mode_destroy(dev, match_mode); + found = 1; + break; + } + } + + if (!found) + ret = -EINVAL; + + return ret; +} + +int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode) +{ + struct drm_connector *connector; + + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + drm_mode_detachmode(dev, connector, mode); + } + return 0; +} +EXPORT_SYMBOL(drm_mode_detachmode_crtc); + +/** + * drm_fb_attachmode - Attach a user mode to an connector + * @inode: inode from the ioctl + * @filp: file * from the ioctl + * @cmd: cmd from ioctl + * @arg: arg from ioctl + * + * This attaches a user specified mode to an connector. + * Called by the user via ioctl. + * + * RETURNS: + * Zero on success, errno on failure. + */ +int drm_mode_attachmode_ioctl(struct drm_device *dev, + void *data, struct drm_file *file_priv) +{ + struct drm_mode_mode_cmd *mode_cmd = data; + struct drm_connector *connector; + struct drm_display_mode *mode; + struct drm_mode_object *obj; + struct drm_mode_modeinfo *umode = &mode_cmd->mode; + int ret = 0; + + mutex_lock(&dev->mode_config.mutex); + + obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR); + if (!obj) { + ret = -EINVAL; + goto out; + } + connector = obj_to_connector(obj); + + mode = drm_mode_create(dev); + if (!mode) { + ret = -ENOMEM; + goto out; + } + + drm_crtc_convert_umode(mode, umode); + + ret = drm_mode_attachmode(dev, connector, mode); +out: + mutex_unlock(&dev->mode_config.mutex); + return ret; +} + + +/** + * drm_fb_detachmode - Detach a user specified mode from an connector + * @inode: inode from the ioctl + * @filp: file * from the ioctl + * @cmd: cmd from ioctl + * @arg: arg from ioctl + * + * Called by the user via ioctl. + * + * RETURNS: + * Zero on success, errno on failure. + */ +int drm_mode_detachmode_ioctl(struct drm_device *dev, + void *data, struct drm_file *file_priv) +{ + struct drm_mode_object *obj; + struct drm_mode_mode_cmd *mode_cmd = data; + struct drm_connector *connector; + struct drm_display_mode mode; + struct drm_mode_modeinfo *umode = &mode_cmd->mode; + int ret = 0; + + mutex_lock(&dev->mode_config.mutex); + + obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR); + if (!obj) { + ret = -EINVAL; + goto out; + } + connector = obj_to_connector(obj); + + drm_crtc_convert_umode(&mode, umode); + ret = drm_mode_detachmode(dev, connector, &mode); +out: + mutex_unlock(&dev->mode_config.mutex); + return ret; +} + +struct drm_property *drm_property_create(struct drm_device *dev, int flags, + const char *name, int num_values) +{ + struct drm_property *property = NULL; + + property = kzalloc(sizeof(struct drm_property), GFP_KERNEL); + if (!property) + return NULL; + + if (num_values) { + property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL); + if (!property->values) + goto fail; + } + + drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY); + property->flags = flags; + property->num_values = num_values; + INIT_LIST_HEAD(&property->enum_blob_list); + + if (name) + strncpy(property->name, name, DRM_PROP_NAME_LEN); + + list_add_tail(&property->head, &dev->mode_config.property_list); + return property; +fail: + kfree(property); + return NULL; +} +EXPORT_SYMBOL(drm_property_create); + +int drm_property_add_enum(struct drm_property *property, int index, + uint64_t value, const char *name) +{ + struct drm_property_enum *prop_enum; + + if (!(property->flags & DRM_MODE_PROP_ENUM)) + return -EINVAL; + + if (!list_empty(&property->enum_blob_list)) { + list_for_each_entry(prop_enum, &property->enum_blob_list, head) { + if (prop_enum->value == value) { + strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); + prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; + return 0; + } + } + } + + prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL); + if (!prop_enum) + return -ENOMEM; + + strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); + prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; + prop_enum->value = value; + + property->values[index] = value; + list_add_tail(&prop_enum->head, &property->enum_blob_list); + return 0; +} +EXPORT_SYMBOL(drm_property_add_enum); + +void drm_property_destroy(struct drm_device *dev, struct drm_property *property) +{ + struct drm_property_enum *prop_enum, *pt; + + list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) { + list_del(&prop_enum->head); + kfree(prop_enum); + } + + if (property->num_values) + kfree(property->values); + drm_mode_object_put(dev, &property->base); + list_del(&property->head); + kfree(property); +} +EXPORT_SYMBOL(drm_property_destroy); + +int drm_connector_attach_property(struct drm_connector *connector, + struct drm_property *property, uint64_t init_val) +{ + int i; + + for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) { + if (connector->property_ids[i] == 0) { + connector->property_ids[i] = property->base.id; + connector->property_values[i] = init_val; + break; + } + } + + if (i == DRM_CONNECTOR_MAX_PROPERTY) + return -EINVAL; + return 0; +} +EXPORT_SYMBOL(drm_connector_attach_property); + +int drm_connector_property_set_value(struct drm_connector *connector, + struct drm_property *property, uint64_t value) +{ + int i; + + for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) { + if (connector->property_ids[i] == property->base.id) { + connector->property_values[i] = value; + break; + } + } + + if (i == DRM_CONNECTOR_MAX_PROPERTY) + return -EINVAL; + return 0; +} +EXPORT_SYMBOL(drm_connector_property_set_value); + +int drm_connector_property_get_value(struct drm_connector *connector, + struct drm_property *property, uint64_t *val) +{ + int i; + + for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) { + if (connector->property_ids[i] == property->base.id) { + *val = connector->property_values[i]; + break; + } + } + + if (i == DRM_CONNECTOR_MAX_PROPERTY) + return -EINVAL; + return 0; +} +EXPORT_SYMBOL(drm_connector_property_get_value); + +int drm_mode_getproperty_ioctl(struct drm_device *dev, + void *data, struct drm_file *file_priv) +{ + struct drm_mode_object *obj; + struct drm_mode_get_property *out_resp = data; + struct drm_property *property; + int enum_count = 0; + int blob_count = 0; + int value_count = 0; + int ret = 0, i; + int copied; + struct drm_property_enum *prop_enum; + struct drm_mode_property_enum __user *enum_ptr; + struct drm_property_blob *prop_blob; + uint32_t *blob_id_ptr; + uint64_t __user *values_ptr; + uint32_t __user *blob_length_ptr; + + mutex_lock(&dev->mode_config.mutex); + obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY); + if (!obj) { + ret = -EINVAL; + goto done; + } + property = obj_to_property(obj); + + if (property->flags & DRM_MODE_PROP_ENUM) { + list_for_each_entry(prop_enum, &property->enum_blob_list, head) + enum_count++; + } else if (property->flags & DRM_MODE_PROP_BLOB) { + list_for_each_entry(prop_blob, &property->enum_blob_list, head) + blob_count++; + } + + value_count = property->num_values; + + strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN); + out_resp->name[DRM_PROP_NAME_LEN-1] = 0; + out_resp->flags = property->flags; + + if ((out_resp->count_values >= value_count) && value_count) { + values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr; + for (i = 0; i < value_count; i++) { + if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) { + ret = -EFAULT; + goto done; + } + } + } + out_resp->count_values = value_count; + + if (property->flags & DRM_MODE_PROP_ENUM) { + if ((out_resp->count_enum_blobs >= enum_count) && enum_count) { + copied = 0; + enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr; + list_for_each_entry(prop_enum, &property->enum_blob_list, head) { + + if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) { + ret = -EFAULT; + goto done; + } + + if (copy_to_user(&enum_ptr[copied].name, + &prop_enum->name, DRM_PROP_NAME_LEN)) { + ret = -EFAULT; + goto done; + } + copied++; + } + } + out_resp->count_enum_blobs = enum_count; + } + + if (property->flags & DRM_MODE_PROP_BLOB) { + if ((out_resp->count_enum_blobs >= blob_count) && blob_count) { + copied = 0; + blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr; + blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr; + + list_for_each_entry(prop_blob, &property->enum_blob_list, head) { + if (put_user(prop_blob->base.id, blob_id_ptr + copied)) { + ret = -EFAULT; + goto done; + } + + if (put_user(prop_blob->length, blob_length_ptr + copied)) { + ret = -EFAULT; + goto done; + } + + copied++; + } + } + out_resp->count_enum_blobs = blob_count; + } +done: + mutex_unlock(&dev->mode_config.mutex); + return ret; +} + +static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length, + void *data) +{ + struct drm_property_blob *blob; + + if (!length || !data) + return NULL; + + blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL); + if (!blob) + return NULL; + + blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob)); + blob->length = length; + + memcpy(blob->data, data, length); + + drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB); + + list_add_tail(&blob->head, &dev->mode_config.property_blob_list); + return blob; +} + +static void drm_property_destroy_blob(struct drm_device *dev, + struct drm_property_blob *blob) +{ + drm_mode_object_put(dev, &blob->base); + list_del(&blob->head); + kfree(blob); +} + +int drm_mode_getblob_ioctl(struct drm_device *dev, + void *data, struct drm_file *file_priv) +{ + struct drm_mode_object *obj; + struct drm_mode_get_blob *out_resp = data; + struct drm_property_blob *blob; + int ret = 0; + void *blob_ptr; + + mutex_lock(&dev->mode_config.mutex); + obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB); + if (!obj) { + ret = -EINVAL; + goto done; + } + blob = obj_to_blob(obj); + + if (out_resp->length == blob->length) { + blob_ptr = (void *)(unsigned long)out_resp->data; + if (copy_to_user(blob_ptr, blob->data, blob->length)){ + ret = -EFAULT; + goto done; + } + } + out_resp->length = blob->length; + +done: + mutex_unlock(&dev->mode_config.mutex); + return ret; +} + +int drm_mode_connector_update_edid_property(struct drm_connector *connector, struct edid *edid) +{ + struct drm_device *dev = connector->dev; + int ret = 0; + if (connector->edid_blob_ptr) + drm_property_destroy_blob(dev, connector->edid_blob_ptr); + + /* Delete edid, when there is none. */ + if (!edid) { + connector->edid_blob_ptr = NULL; + ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0); + return ret; + } + + connector->edid_blob_ptr = drm_property_create_blob(connector->dev, 128, edid); + + ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, connector->edid_blob_ptr->base.id); + return ret; +} +EXPORT_SYMBOL(drm_mode_connector_update_edid_property); + +int drm_mode_connector_property_set_ioctl(struct drm_device *dev, + void *data, struct drm_file *file_priv) +{ + struct drm_mode_connector_set_property *out_resp = data; + struct drm_mode_object *obj; + struct drm_property *property; + struct drm_connector *connector; + int ret = -EINVAL; + int i; + + mutex_lock(&dev->mode_config.mutex); + + obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR); + if (!obj) { + goto out; + } + connector = obj_to_connector(obj); + + for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) { + if (connector->property_ids[i] == out_resp->prop_id) + break; + } + + if (i == DRM_CONNECTOR_MAX_PROPERTY) { + goto out; + } + + obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY); + if (!obj) { + goto out; + } + property = obj_to_property(obj); + + if (property->flags & DRM_MODE_PROP_IMMUTABLE) + goto out; + + if (property->flags & DRM_MODE_PROP_RANGE) { + if (out_resp->value < property->values[0]) + goto out; + + if (out_resp->value > property->values[1]) + goto out; + } else { + int found = 0; + for (i = 0; i < property->num_values; i++) { + if (property->values[i] == out_resp->value) { + found = 1; + break; + } + } + if (!found) { + goto out; + } + } + + if (connector->funcs->set_property) + ret = connector->funcs->set_property(connector, property, out_resp->value); + + /* store the property value if succesful */ + if (!ret) + drm_connector_property_set_value(connector, property, out_resp->value); +out: + mutex_unlock(&dev->mode_config.mutex); + return ret; +} + + +int drm_mode_replacefb(struct drm_device *dev, + void *data, struct drm_file *file_priv) +{ + struct drm_mode_fb_cmd *r = data; + struct drm_mode_object *obj; + struct drm_framebuffer *fb; + int found = 0; + struct drm_framebuffer *fbl = NULL; + int ret = 0; + + /* right replace the current bo attached to this fb with a new bo */ + mutex_lock(&dev->mode_config.mutex); + obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB); + if (!obj) { + ret = -EINVAL; + goto out; + } + fb = obj_to_fb(obj); + + list_for_each_entry(fbl, &file_priv->fbs, filp_head) + if (fb == fbl) + found = 1; + + if (!found) { + DRM_ERROR("tried to replace an fb we didn't own\n"); + ret = -EINVAL; + goto out; + } + + if (dev->mode_config.funcs->resize_fb) + ret = dev->mode_config.funcs->resize_fb(dev, file_priv, fb, r); + else + ret = -EINVAL; +out: + mutex_unlock(&dev->mode_config.mutex); + return ret; + +} + +int drm_mode_connector_attach_encoder(struct drm_connector *connector, + struct drm_encoder *encoder) +{ + int i; + + for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { + if (connector->encoder_ids[i] == 0) { + connector->encoder_ids[i] = encoder->base.id; + return 0; + } + } + return -ENOMEM; +} +EXPORT_SYMBOL(drm_mode_connector_attach_encoder); + +void drm_mode_connector_detach_encoder(struct drm_connector *connector, + struct drm_encoder *encoder) +{ + int i; + for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { + if (connector->encoder_ids[i] == encoder->base.id) { + connector->encoder_ids[i] = 0; + if (connector->encoder == encoder) + connector->encoder = NULL; + break; + } + } +} +EXPORT_SYMBOL(drm_mode_connector_detach_encoder); + +bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, + int gamma_size) +{ + crtc->gamma_size = gamma_size; + + crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL); + if (!crtc->gamma_store) { + crtc->gamma_size = 0; + return false; + } + + return true; +} +EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size); + +int drm_mode_gamma_set_ioctl(struct drm_device *dev, + void *data, struct drm_file *file_priv) +{ + struct drm_mode_crtc_lut *crtc_lut = data; + struct drm_mode_object *obj; + struct drm_crtc *crtc; + void *r_base, *g_base, *b_base; + int size; + int ret = 0; + + mutex_lock(&dev->mode_config.mutex); + obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); + if (!obj) { + ret = -EINVAL; + goto out; + } + crtc = obj_to_crtc(obj); + + /* memcpy into gamma store */ + if (crtc_lut->gamma_size != crtc->gamma_size) { + ret = -EINVAL; + goto out; + } + + size = crtc_lut->gamma_size * (sizeof(uint16_t)); + r_base = crtc->gamma_store; + if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) { + ret = -EFAULT; + goto out; + } + + g_base = r_base + size; + if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) { + ret = -EFAULT; + goto out; + } + + b_base = g_base + size; + if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) { + ret = -EFAULT; + goto out; + } + + crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, crtc->gamma_size); + +out: + mutex_unlock(&dev->mode_config.mutex); + return ret; + +} + +int drm_mode_gamma_get_ioctl(struct drm_device *dev, + void *data, struct drm_file *file_priv) +{ + struct drm_mode_crtc_lut *crtc_lut = data; + struct drm_mode_object *obj; + struct drm_crtc *crtc; + void *r_base, *g_base, *b_base; + int size; + int ret = 0; + + mutex_lock(&dev->mode_config.mutex); + obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); + if (!obj) { + ret = -EINVAL; + goto out; + } + crtc = obj_to_crtc(obj); + + /* memcpy into gamma store */ + if (crtc_lut->gamma_size != crtc->gamma_size) { + ret = -EINVAL; + goto out; + } + + size = crtc_lut->gamma_size * (sizeof(uint16_t)); + r_base = crtc->gamma_store; + if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) { + ret = -EFAULT; + goto out; + } + + g_base = r_base + size; + if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) { + ret = -EFAULT; + goto out; + } + + b_base = g_base + size; + if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) { + ret = -EFAULT; + goto out; + } +out: + mutex_unlock(&dev->mode_config.mutex); + return ret; +} |