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 "hdmi.h"
25 
26 void
gf119_hdmi_ctrl(struct nvkm_ior * ior,int head,bool enable,u8 max_ac_packet,u8 rekey,u8 * avi,u8 avi_size,u8 * vendor,u8 vendor_size)27 gf119_hdmi_ctrl(struct nvkm_ior *ior, int head, bool enable, u8 max_ac_packet,
28 		u8 rekey, u8 *avi, u8 avi_size, u8 *vendor, u8 vendor_size)
29 {
30 	struct nvkm_device *device = ior->disp->engine.subdev.device;
31 	const u32 ctrl = 0x40000000 * enable |
32 			 max_ac_packet << 16 |
33 			 rekey;
34 	const u32 hoff = head * 0x800;
35 	struct packed_hdmi_infoframe avi_infoframe;
36 	struct packed_hdmi_infoframe vendor_infoframe;
37 
38 	pack_hdmi_infoframe(&avi_infoframe, avi, avi_size);
39 	pack_hdmi_infoframe(&vendor_infoframe, vendor, vendor_size);
40 
41 	if (!(ctrl & 0x40000000)) {
42 		nvkm_mask(device, 0x616798 + hoff, 0x40000000, 0x00000000);
43 		nvkm_mask(device, 0x616730 + hoff, 0x00000001, 0x00000000);
44 		nvkm_mask(device, 0x6167a4 + hoff, 0x00000001, 0x00000000);
45 		nvkm_mask(device, 0x616714 + hoff, 0x00000001, 0x00000000);
46 		return;
47 	}
48 
49 	/* AVI InfoFrame */
50 	nvkm_mask(device, 0x616714 + hoff, 0x00000001, 0x00000000);
51 	if (avi_size) {
52 		nvkm_wr32(device, 0x61671c + hoff, avi_infoframe.header);
53 		nvkm_wr32(device, 0x616720 + hoff, avi_infoframe.subpack0_low);
54 		nvkm_wr32(device, 0x616724 + hoff, avi_infoframe.subpack0_high);
55 		nvkm_wr32(device, 0x616728 + hoff, avi_infoframe.subpack1_low);
56 		nvkm_wr32(device, 0x61672c + hoff, avi_infoframe.subpack1_high);
57 		nvkm_mask(device, 0x616714 + hoff, 0x00000001, 0x00000001);
58 	}
59 
60 	/* GENERIC(?) / Vendor InfoFrame? */
61 	nvkm_mask(device, 0x616730 + hoff, 0x00010001, 0x00010000);
62 	if (vendor_size) {
63 		/*
64 		 * These appear to be the audio infoframe registers,
65 		 * but no other set of infoframe registers has yet
66 		 * been found.
67 		 */
68 		nvkm_wr32(device, 0x616738 + hoff, vendor_infoframe.header);
69 		nvkm_wr32(device, 0x61673c + hoff, vendor_infoframe.subpack0_low);
70 		nvkm_wr32(device, 0x616740 + hoff, vendor_infoframe.subpack0_high);
71 		/* Is there a second (or further?) set of subpack registers here? */
72 		nvkm_mask(device, 0x616730 + hoff, 0x00000001, 0x00000001);
73 	}
74 
75 	/* ??? InfoFrame? */
76 	nvkm_mask(device, 0x6167a4 + hoff, 0x00000001, 0x00000000);
77 	nvkm_wr32(device, 0x6167ac + hoff, 0x00000010);
78 	nvkm_mask(device, 0x6167a4 + hoff, 0x00000001, 0x00000001);
79 
80 	/* HDMI_CTRL */
81 	nvkm_mask(device, 0x616798 + hoff, 0x401f007f, ctrl);
82 }
83