diff --git a/drivers/gpu/drm/drm_encoder.c b/drivers/gpu/drm/drm_encoder.c index a940024c8087..1143bc7f3252 100644 --- a/drivers/gpu/drm/drm_encoder.c +++ b/drivers/gpu/drm/drm_encoder.c @@ -27,6 +27,7 @@ #include #include #include +#include #include "drm_crtc_internal.h" @@ -148,9 +149,9 @@ out_put: * the encoder structure. The encoder structure should not be allocated with * devm_kzalloc(). * - * Note: consider using drmm_encoder_alloc() instead of drm_encoder_init() to - * let the DRM managed resource infrastructure take care of cleanup and - * deallocation. + * Note: consider using drmm_encoder_alloc() or drmm_encoder_init() + * instead of drm_encoder_init() to let the DRM managed resource + * infrastructure take care of cleanup and deallocation. * * Returns: * Zero on success, error code on failure. @@ -212,6 +213,30 @@ static void drmm_encoder_alloc_release(struct drm_device *dev, void *ptr) drm_encoder_cleanup(encoder); } +__printf(5, 0) +static int __drmm_encoder_init(struct drm_device *dev, + struct drm_encoder *encoder, + const struct drm_encoder_funcs *funcs, + int encoder_type, + const char *name, + va_list args) +{ + int ret; + + if (drm_WARN_ON(dev, funcs && funcs->destroy)) + return -EINVAL; + + ret = __drm_encoder_init(dev, encoder, funcs, encoder_type, name, args); + if (ret) + return ret; + + ret = drmm_add_action_or_reset(dev, drmm_encoder_alloc_release, encoder); + if (ret) + return ret; + + return 0; +} + void *__drmm_encoder_alloc(struct drm_device *dev, size_t size, size_t offset, const struct drm_encoder_funcs *funcs, int encoder_type, const char *name, ...) @@ -221,9 +246,6 @@ void *__drmm_encoder_alloc(struct drm_device *dev, size_t size, size_t offset, va_list ap; int ret; - if (WARN_ON(funcs && funcs->destroy)) - return ERR_PTR(-EINVAL); - container = drmm_kzalloc(dev, size, GFP_KERNEL); if (!container) return ERR_PTR(-ENOMEM); @@ -231,19 +253,50 @@ void *__drmm_encoder_alloc(struct drm_device *dev, size_t size, size_t offset, encoder = container + offset; va_start(ap, name); - ret = __drm_encoder_init(dev, encoder, funcs, encoder_type, name, ap); + ret = __drmm_encoder_init(dev, encoder, funcs, encoder_type, name, ap); va_end(ap); if (ret) return ERR_PTR(ret); - ret = drmm_add_action_or_reset(dev, drmm_encoder_alloc_release, encoder); - if (ret) - return ERR_PTR(ret); - return container; } EXPORT_SYMBOL(__drmm_encoder_alloc); +/** + * drmm_encoder_init - Initialize a preallocated encoder + * @dev: drm device + * @encoder: the encoder to init + * @funcs: callbacks for this encoder (optional) + * @encoder_type: user visible type of the encoder + * @name: printf style format string for the encoder name, or NULL for default name + * + * Initializes a preallocated encoder. Encoder should be subclassed as + * part of driver encoder objects. Cleanup is automatically handled + * through registering drm_encoder_cleanup() with drmm_add_action(). The + * encoder structure should be allocated with drmm_kzalloc(). + * + * The @drm_encoder_funcs.destroy hook must be NULL. + * + * Returns: + * Zero on success, error code on failure. + */ +int drmm_encoder_init(struct drm_device *dev, struct drm_encoder *encoder, + const struct drm_encoder_funcs *funcs, + int encoder_type, const char *name, ...) +{ + va_list ap; + int ret; + + va_start(ap, name); + ret = __drmm_encoder_init(dev, encoder, funcs, encoder_type, name, ap); + va_end(ap); + if (ret) + return ret; + + return 0; +} +EXPORT_SYMBOL(drmm_encoder_init); + static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder) { struct drm_connector *connector; diff --git a/include/drm/drm_encoder.h b/include/drm/drm_encoder.h index 6e91a0280f31..3a09682af685 100644 --- a/include/drm/drm_encoder.h +++ b/include/drm/drm_encoder.h @@ -194,6 +194,12 @@ int drm_encoder_init(struct drm_device *dev, const struct drm_encoder_funcs *funcs, int encoder_type, const char *name, ...); +__printf(5, 6) +int drmm_encoder_init(struct drm_device *dev, + struct drm_encoder *encoder, + const struct drm_encoder_funcs *funcs, + int encoder_type, const char *name, ...); + __printf(6, 7) void *__drmm_encoder_alloc(struct drm_device *dev, size_t size, size_t offset,