[PATCH v3 01/12] drm: drm_device.h: update comments to kernel-doc style

Sam Ravnborg
2019-01-08T19:57:54Z

Updated comment style to kernel-doc format in drm_device.h

In struct drm_device there are 12 struct members without doc:
- registered
- filelist_mutex
- filelist
- irq
- vbl_lock
- event_lock
- hose
- sigdata
- sigdata.context
- sigdata.lock
- agp_buffer_map
- agp_buffer_token

They all need proper documentation, a task left for someone
that knows their usage.

drm_device is not plugged into Documentation/gpu/drm-internals.rst
as this would create a new load of warnings.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Jonathan Corbet <corbet@lwn.net>
---
include/drm/drm_device.h | 199 +++++++++++++++++++++++++++++++----------------
1 file changed, 134 insertions(+), 65 deletions(-)

diff --git a/include/drm/drm_device.h b/include/drm/drm_device.h
index 42411b3ea0c8..2b154ead9efc 100644
--- a/include/drm/drm_device.h
+++ b/include/drm/drm_device.h
@@ -25,24 +25,48 @@ struct pci_dev;
struct pci_controller;

/**
- * DRM device structure. This structure represent a complete card that
+ * struct drm_device - DRM device structure
+ *
+ * This structure represent a complete card that
* may contain multiple heads.
*/
struct drm_device {
- struct list_head legacy_dev_list;/**< list of devices per driver for stealth attach cleanup */
- int if_version; /**< Highest interface version set */
-
- /** \name Lifetime Management */
- /*@{ */
- struct kref ref; /**< Object ref-count */
- struct device *dev; /**< Device structure of bus-device */
- struct drm_driver *driver; /**< DRM driver managing the device */
- void *dev_private; /**< DRM driver private data */
- struct drm_minor *primary; /**< Primary node */
- struct drm_minor *render; /**< Render node */
+ /**
+ * @legacy_dev_list:
+ *
+ * List of devices per driver for stealth attach cleanup
+ */
+ struct list_head legacy_dev_list;
+
+ /** @if_version: Highest interface version set */
+ int if_version;
+
+ /** @ref: Object ref-count */
+ struct kref ref;
+
+ /** @dev: Device structure of bus-device */
+ struct device *dev;
+
+ /** @driver: DRM driver managing the device */
+ struct drm_driver *driver;
+
+ /** @dev_private: DRM driver private data */
+ void *dev_private;
+
+ /** @primary: Primary node */
+ struct drm_minor *primary;
+
+ /** @render: Render node */
+ struct drm_minor *render;
+
bool registered;

- /* currently active master for this device. Protected by master_mutex */
+ /**
+ * @master:
+ *
+ * Currently active master for this device.
+ * Protected by &master_mutex
+ */
struct drm_master *master;

/**
@@ -63,23 +87,42 @@ struct drm_device {
*/
bool unplugged;

- struct inode *anon_inode; /**< inode for private address-space */
- char *unique; /**< unique name of the device */
- /*@} */
+ /** @anon_inode: inode for private address-space */
+ struct inode *anon_inode;
+
+ /** @unique: Unique name of the device */
+ char *unique;
+
+ /**
+ * @struct_mutex:
+ *
+ * Lock for others (not &drm_minor.master and &drm_file.is_master)
+ */
+ struct mutex struct_mutex;
+
+ /**
+ * @master_mutex:
+ *
+ * Lock for &drm_minor.master and &drm_file.is_master
+ */
+ struct mutex master_mutex;
+
+ /**
+ * @open_count:
+ *
+ * Usage counter for outstanding files open,
+ * protected by drm_global_mutex
+ */
+ int open_count;
+
+ /** @buf_lock: Lock for &buf_use and a few other things. */
+ spinlock_t buf_lock;

- /** \name Locks */
- /*@{ */
- struct mutex struct_mutex; /**< For others */
- struct mutex master_mutex; /**< For drm_minor::master and drm_file::is_master */
- /*@} */
+ /** @buf_use: Usage counter for buffers in use -- cannot alloc */
+ int buf_use;

- /** \name Usage Counters */
- /*@{ */
- int open_count; /**< Outstanding files open, protected by drm_global_mutex. */
- spinlock_t buf_lock; /**< For drm_device::buf_use and a few other things. */
- int buf_use; /**< Buffers in use -- cannot alloc */
- atomic_t buf_alloc; /**< Buffer allocation in progress */
- /*@} */
+ /** @buf_alloc: Buffer allocation in progress */
+ atomic_t buf_alloc;

struct mutex filelist_mutex;
struct list_head filelist;
@@ -87,51 +130,64 @@ struct drm_device {
/**
* @filelist_internal:
*
- * List of open DRM files for in-kernel clients. Protected by @filelist_mutex.
+ * List of open DRM files for in-kernel clients.
+ * Protected by &filelist_mutex.
*/
struct list_head filelist_internal;

/**
* @clientlist_mutex:
*
- * Protects @clientlist access.
+ * Protects &clientlist access.
*/
struct mutex clientlist_mutex;

/**
* @clientlist:
*
- * List of in-kernel clients. Protected by @clientlist_mutex.
+ * List of in-kernel clients. Protected by &clientlist_mutex.
*/
struct list_head clientlist;

- /** \name Memory management */
- /*@{ */
- struct list_head maplist; /**< Linked list of regions */
- struct drm_open_hash map_hash; /**< User token hash table for maps */
+ /** @maplist: Memory management - linked list of regions */
+ struct list_head maplist;

- /** \name Context handle management */
- /*@{ */
- struct list_head ctxlist; /**< Linked list of context handles */
- struct mutex ctxlist_mutex; /**< For ctxlist */
+ /** @map_hash: Memory management - user token hash table for maps */
+ struct drm_open_hash map_hash;

- struct idr ctx_idr;
+ /**
+ * @ctxlist:
+ * Context handle management - linked list of context handles
+ */
+ struct list_head ctxlist;

- struct list_head vmalist; /**< List of vmas (for debugging) */
+ /**
+ * @ctxlist_mutex:
+ *
+ * Context handle management - mutex for &ctxlist
+ */
+ struct mutex ctxlist_mutex;

- /*@} */
+ /**
+ * @ctx_idr:
+ * Context handle management
+ */
+ struct idr ctx_idr;

- /** \name DMA support */
- /*@{ */
- struct drm_device_dma *dma; /**< Optional pointer for DMA support */
- /*@} */
+ /**
+ * @vmalist:
+ * Context handle management - list of vmas (for debugging)
+ */
+ struct list_head vmalist;
+
+ /** @dma: Optional pointer for DMA support */
+ struct drm_device_dma *dma;

- /** \name Context support */
- /*@{ */
+ /** @context_flag: Context swapping flag */
+ __volatile__ long context_flag;

- __volatile__ long context_flag; /**< Context swapping flag */
- int last_context; /**< Last current context */
- /*@} */
+ /** @last_context: Last current context */
+ int last_context;

/**
* @irq_enabled:
@@ -168,7 +224,12 @@ struct drm_device {
*/
struct drm_vblank_crtc *vblank;

- spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
+ /**
+ * @vblank_time_lock:
+ *
+ * Protects vblank count and time updates during vblank enable/disable
+ */
+ spinlock_t vblank_time_lock;
spinlock_t vbl_lock;

/**
@@ -186,25 +247,29 @@ struct drm_device {
*
* If non-zeor, &drm_crtc_funcs.get_vblank_counter must be set.
*/
- u32 max_vblank_count; /**< size of vblank counter register */

- /**
- * List of events
- */
+ /** @max_vblank_count: Size of vblank counter register */
+ u32 max_vblank_count;
+
+ /** @vblank_event_list: List of vblank events */
struct list_head vblank_event_list;
spinlock_t event_lock;

- /*@} */
+ /** @agp: AGP data */
+ struct drm_agp_head *agp;

- struct drm_agp_head *agp; /**< AGP data */
+ /** @pdev: PCI device structure */
+ struct pci_dev *pdev;

- struct pci_dev *pdev; /**< PCI device structure */
#ifdef __alpha__
struct pci_controller *hose;
#endif

- struct drm_sg_mem *sg; /**< Scatter gather memory */
- unsigned int num_crtcs; /**< Number of CRTCs on this device */
+ /** @sg: Scatter gather memory */
+ struct drm_sg_mem *sg;
+
+ /** @num_crtcs: Number of CRTCs on this device */
+ unsigned int num_crtcs;

struct {
int context;
@@ -214,14 +279,18 @@ struct drm_device {
struct drm_local_map *agp_buffer_map;
unsigned int agp_buffer_token;

- struct drm_mode_config mode_config; /**< Current mode config */
+ /** @mode_config: Current mode config */
+ struct drm_mode_config mode_config;

- /** \name GEM information */
- /*@{ */
+ /** @object_name_lock: GEM information */
struct mutex object_name_lock;
+
+ /** @object_name_idr: GEM information */
struct idr object_name_idr;
+
+ /** @vma_offset_manager: GEM information */
struct drm_vma_offset_manager *vma_offset_manager;
- /*@} */
+
int switch_power_state;

/**
--
2.12.0