1 /*
2 * Copyright 2012 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 */
24 #include "priv.h"
25 #include "ram.h"
26 #include "regsnv04.h"
27
28 static void
29 nv04_fb_init(struct nvkm_fb *fb)
30 {
31 struct nvkm_device *device = fb->subdev.device;
32
33 /* This is what the DDX did for NV_ARCH_04, but a mmio-trace shows
34 * nvidia reading PFB_CFG_0, then writing back its original value.
35 * (which was 0x701114 in this case)
36 */
37 nvkm_wr32(device, NV04_PFB_CFG0, 0x1114);
38 }
39
40 static const struct nvkm_fb_func
41 nv04_fb = {
42 .init = nv04_fb_init,
43 .ram_new = nv04_ram_new,
44 };
45
46 int
47 nv04_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
48 {
49 return nvkm_fb_new_(&nv04_fb, device, index, pfb);
50 }