diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/i2c/pad.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/i2c/pad.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/pad.c b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/pad.c new file mode 100644 index 000000000000..a3d0d82ff6f5 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/pad.c @@ -0,0 +1,84 @@ +/* + * Copyright 2014 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Ben Skeggs + */ + +#include "pad.h" + +int +_nvkm_i2c_pad_fini(struct nouveau_object *object, bool suspend) +{ + struct nvkm_i2c_pad *pad = (void *)object; + DBG("-> NULL\n"); + pad->port = NULL; + return nouveau_object_fini(&pad->base, suspend); +} + +int +_nvkm_i2c_pad_init(struct nouveau_object *object) +{ + struct nvkm_i2c_pad *pad = (void *)object; + DBG("-> PORT:%02x\n", pad->next->index); + pad->port = pad->next; + return nouveau_object_init(&pad->base); +} + +int +nvkm_i2c_pad_create_(struct nouveau_object *parent, + struct nouveau_object *engine, + struct nouveau_oclass *oclass, int index, + int size, void **pobject) +{ + struct nouveau_i2c *i2c = nouveau_i2c(parent); + struct nouveau_i2c_port *port; + struct nvkm_i2c_pad *pad; + int ret; + + list_for_each_entry(port, &i2c->ports, head) { + pad = nvkm_i2c_pad(port); + if (pad->index == index) { + atomic_inc(&nv_object(pad)->refcount); + *pobject = pad; + return 1; + } + } + + ret = nouveau_object_create_(parent, engine, oclass, 0, size, pobject); + pad = *pobject; + if (ret) + return ret; + + pad->index = index; + return 0; +} + +int +_nvkm_i2c_pad_ctor(struct nouveau_object *parent, struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *data, u32 index, + struct nouveau_object **pobject) +{ + struct nvkm_i2c_pad *pad; + int ret; + ret = nvkm_i2c_pad_create(parent, engine, oclass, index, &pad); + *pobject = nv_object(pad); + return ret; +} |