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The LITMUS^RT kernel.

Bjoern Brandenburg

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author	Boaz Harrosh <bharrosh@panasas.com>	2009-12-21 09:36:23 -0500
committer	Boaz Harrosh <bharrosh@panasas.com>	2010-01-05 02:14:32 -0500
commit	89be503021f550575fc896671b569941140b2c2e (patch)
tree	123d325b3cfd21215eee418c4089ce4ceca663d5 /drivers/misc/ibmasm/module.c
parent	c5974b835a909ff15c3b7e6cf6789b5eb919f419 (diff)

exofs: fix pnfs_osd re-definitions in pre-pnfs trees

Some on disk exofs constants and types are defined in the pnfs_osd_xdr.h file. Since we needed these types before the pnfs-objects code was accepted to mainline we duplicated the minimal needed definitions into an exofs local header. The definitions where conditionally included depending on !CONFIG_PNFS defined. So if PNFS was present in the tree definitions are taken from there and if not they are defined locally. That was all good but, the CONFIG_PNFS is planed to be included upstream before the pnfs-objects is also included. (The first pnfs batch might be pnfs-files only) So condition exofs local definitions on the absence of pnfs_osd_xdr.h inclusion (__PNFS_OSD_XDR_H__ not defined). User code must make sure that in future pnfs_osd_xdr.h will be included before fs/exofs/pnfs.h, which happens to be so in current code. Once pnfs-objects hits mainline, exofs's local header will be removed. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>

Diffstat (limited to 'drivers/misc/ibmasm/module.c')

0 files changed, 0 insertions, 0 deletions

; #include <drm/drmP.h> #include <drm/drm_encoder.h> #include "drm_crtc_internal.h" /** * DOC: overview * * Encoders represent the connecting element between the CRTC (as the overall * pixel pipeline, represented by struct &drm_crtc) and the connectors (as the * generic sink entity, represented by struct &drm_connector). An encoder takes * pixel data from a CRTC and converts it to a format suitable for any attached * connector. Encoders are objects exposed to userspace, originally to allow * userspace to infer cloning and connector/CRTC restrictions. Unfortunately * almost all drivers get this wrong, making the uabi pretty much useless. On * top of that the exposed restrictions are too simple for today's hardware, and * the recommended way to infer restrictions is by using the * DRM_MODE_ATOMIC_TEST_ONLY flag for the atomic IOCTL. * * Otherwise encoders aren't used in the uapi at all (any modeset request from * userspace directly connects a connector with a CRTC), drivers are therefore * free to use them however they wish. Modeset helper libraries make strong use * of encoders to facilitate code sharing. But for more complex settings it is * usually better to move shared code into a separate &drm_bridge. Compared to * encoders, bridges also have the benefit of being purely an internal * abstraction since they are not exposed to userspace at all. * * Encoders are initialized with drm_encoder_init() and cleaned up using * drm_encoder_cleanup(). */ static const 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" }, { DRM_MODE_ENCODER_VIRTUAL, "Virtual" }, { DRM_MODE_ENCODER_DSI, "DSI" }, { DRM_MODE_ENCODER_DPMST, "DP MST" }, { DRM_MODE_ENCODER_DPI, "DPI" }, }; int drm_encoder_register_all(struct drm_device *dev) { struct drm_encoder *encoder; int ret = 0; drm_for_each_encoder(encoder, dev) { if (encoder->funcs->late_register) ret = encoder->funcs->late_register(encoder); if (ret) return ret; } return 0; } void drm_encoder_unregister_all(struct drm_device *dev) { struct drm_encoder *encoder; drm_for_each_encoder(encoder, dev) { if (encoder->funcs->early_unregister) encoder->funcs->early_unregister(encoder); } } /** * drm_encoder_init - Init a preallocated encoder * @dev: drm device * @encoder: the encoder to init * @funcs: callbacks for this encoder * @encoder_type: user visible type of the encoder * @name: printf style format string for the encoder name, or NULL for default name * * Initialises a preallocated encoder. Encoder should be subclassed as part of * driver encoder objects. At driver unload time drm_encoder_cleanup() should be * called from the driver's destroy hook in &drm_encoder_funcs. * * Returns: * Zero on success, error code on failure. */ int drm_encoder_init(struct drm_device *dev, struct drm_encoder *encoder, const struct drm_encoder_funcs *funcs, int encoder_type, const char *name, ...) { int ret; drm_modeset_lock_all(dev); ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER); if (ret) goto out_unlock; encoder->dev = dev; encoder->encoder_type = encoder_type; encoder->funcs = funcs; if (name) { va_list ap; va_start(ap, name); encoder->name = kvasprintf(GFP_KERNEL, name, ap); va_end(ap); } else { encoder->name = kasprintf(GFP_KERNEL, "%s-%d", drm_encoder_enum_list[encoder_type].name, encoder->base.id); } if (!encoder->name) { ret = -ENOMEM; goto out_put; } list_add_tail(&encoder->head, &dev->mode_config.encoder_list); encoder->index = dev->mode_config.num_encoder++; out_put: if (ret) drm_mode_object_unregister(dev, &encoder->base); out_unlock: drm_modeset_unlock_all(dev); return ret; } EXPORT_SYMBOL(drm_encoder_init); /** * drm_encoder_cleanup - cleans up an initialised encoder * @encoder: encoder to cleanup * * Cleans up the encoder but doesn't free the object. */ void drm_encoder_cleanup(struct drm_encoder *encoder) { struct drm_device *dev = encoder->dev; /* Note that the encoder_list is considered to be static; should we * remove the drm_encoder at runtime we would have to decrement all * the indices on the drm_encoder after us in the encoder_list. */ drm_modeset_lock_all(dev); drm_mode_object_unregister(dev, &encoder->base); kfree(encoder->name); list_del(&encoder->head); dev->mode_config.num_encoder--; drm_modeset_unlock_all(dev); memset(encoder, 0, sizeof(*encoder)); } EXPORT_SYMBOL(drm_encoder_cleanup); static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder) { struct drm_connector *connector; struct drm_device *dev = encoder->dev; bool uses_atomic = false; /* For atomic drivers only state objects are synchronously updated and * protected by modeset locks, so check those first. */ drm_for_each_connector(connector, dev) { if (!connector->state) continue; uses_atomic = true; if (connector->state->best_encoder != encoder) continue; return connector->state->crtc; } /* Don't return stale data (e.g. pending async disable). */ if (uses_atomic) return NULL; return encoder->crtc; } 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_encoder *encoder; struct drm_crtc *crtc; if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EINVAL; encoder = drm_encoder_find(dev, enc_resp->encoder_id); if (!encoder) return -ENOENT; drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); crtc = drm_encoder_get_crtc(encoder); if (crtc) enc_resp->crtc_id = crtc->base.id; else enc_resp->crtc_id = 0; drm_modeset_unlock(&dev->mode_config.connection_mutex); 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; return 0; }