[mirror_ubuntu-focal-kernel.git] / drivers / gpu / drm / nouveau / nvkm / subdev / bios / conn.c

/*
 * Copyright 2012 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 <subdev/bios.h>
#include <subdev/bios/dcb.h>
#include <subdev/bios/conn.h>

u32
nvbios_connTe(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
{
	u32 dcb = dcb_table(bios, ver, hdr, cnt, len);
	if (dcb && *ver >= 0x30 && *hdr >= 0x16) {
		u32 data = nvbios_rd16(bios, dcb + 0x14);
		if (data) {
			*ver = nvbios_rd08(bios, data + 0);
			*hdr = nvbios_rd08(bios, data + 1);
			*cnt = nvbios_rd08(bios, data + 2);
			*len = nvbios_rd08(bios, data + 3);
			return data;
		}
	}
	return 0x00000000;
}

u32
nvbios_connTp(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
	      struct nvbios_connT *info)
{
	u32 data = nvbios_connTe(bios, ver, hdr, cnt, len);
	memset(info, 0x00, sizeof(*info));
	switch (!!data * *ver) {
	case 0x30:
	case 0x40:
		return data;
	default:
		break;
	}
	return 0x00000000;
}

u32
nvbios_connEe(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len)
{
	u8  hdr, cnt;
	u32 data = nvbios_connTe(bios, ver, &hdr, &cnt, len);
	if (data && idx < cnt)
		return data + hdr + (idx * *len);
	return 0x00000000;
}

u32
nvbios_connEp(struct nvkm_bios *bios, u8 idx, u8 *ver, u8 *len,
	      struct nvbios_connE *info)
{
	u32 data = nvbios_connEe(bios, idx, ver, len);
	memset(info, 0x00, sizeof(*info));
	switch (!!data * *ver) {
	case 0x30:
	case 0x40:
		info->type     =  nvbios_rd08(bios, data + 0x00);
		info->location =  nvbios_rd08(bios, data + 0x01) & 0x0f;
		info->hpd      = (nvbios_rd08(bios, data + 0x01) & 0x30) >> 4;
		info->dp       = (nvbios_rd08(bios, data + 0x01) & 0xc0) >> 6;
		if (*len < 4)
			return data;
		info->hpd     |= (nvbios_rd08(bios, data + 0x02) & 0x03) << 2;
		info->dp      |=  nvbios_rd08(bios, data + 0x02) & 0x0c;
		info->di       = (nvbios_rd08(bios, data + 0x02) & 0xf0) >> 4;
		info->hpd     |= (nvbios_rd08(bios, data + 0x03) & 0x07) << 4;
		info->sr       = (nvbios_rd08(bios, data + 0x03) & 0x08) >> 3;
		info->lcdid    = (nvbios_rd08(bios, data + 0x03) & 0x70) >> 4;
		return data;
	default:
		break;
	}
	return 0x00000000;
}
Commit	Line	Data
cb75d97e BS	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	*/
cb75d97e BS	24	#include <subdev/bios.h>
cb75d97e BS	25	#include <subdev/bios/dcb.h>
5b8a43ae	26	#include <subdev/bios/conn.h>
cb75d97e	27
20014cbe	28	u32
d390b480	29	nvbios_connTe(struct nvkm_bios bios, u8 ver, u8 hdr, u8 cnt, u8 *len)
cb75d97e	30	{
20014cbe	31	u32 dcb = dcb_table(bios, ver, hdr, cnt, len);
cb75d97e	32	if (dcb && ver >= 0x30 && hdr >= 0x16) {
7f5f518f	33	u32 data = nvbios_rd16(bios, dcb + 0x14);
cb75d97e	34	if (data) {
7f5f518f BS	35	*ver = nvbios_rd08(bios, data + 0);
	36	*hdr = nvbios_rd08(bios, data + 1);
	37	*cnt = nvbios_rd08(bios, data + 2);
	38	*len = nvbios_rd08(bios, data + 3);
cb75d97e BS	39	return data;
	40	}
	41	}
20014cbe	42	return 0x00000000;
cb75d97e BS	43	}
cb75d97e BS	44
20014cbe	45	u32
d390b480	46	nvbios_connTp(struct nvkm_bios bios, u8 ver, u8 hdr, u8 cnt, u8 *len,
20014cbe BS	47	struct nvbios_connT *info)
	48	{
	49	u32 data = nvbios_connTe(bios, ver, hdr, cnt, len);
	50	memset(info, 0x00, sizeof(*info));
	51	switch (!!data * *ver) {
	52	case 0x30:
	53	case 0x40:
	54	return data;
	55	default:
	56	break;
	57	}
	58	return 0x00000000;
	59	}
	60
	61	u32
d390b480	62	nvbios_connEe(struct nvkm_bios bios, u8 idx, u8 ver, u8 *len)
cb75d97e BS	63	{
cb75d97e BS	64	u8 hdr, cnt;
20014cbe	65	u32 data = nvbios_connTe(bios, ver, &hdr, &cnt, len);
cb75d97e BS	66	if (data && idx < cnt)
cb75d97e BS	67	return data + hdr + (idx * *len);
20014cbe BS	68	return 0x00000000;
	69	}
	70
	71	u32
d390b480	72	nvbios_connEp(struct nvkm_bios bios, u8 idx, u8 ver, u8 *len,
20014cbe BS	73	struct nvbios_connE *info)
	74	{
	75	u32 data = nvbios_connEe(bios, idx, ver, len);
	76	memset(info, 0x00, sizeof(*info));
	77	switch (!!data * *ver) {
	78	case 0x30:
	79	case 0x40:
7f5f518f BS	80	info->type = nvbios_rd08(bios, data + 0x00);
	81	info->location = nvbios_rd08(bios, data + 0x01) & 0x0f;
	82	info->hpd = (nvbios_rd08(bios, data + 0x01) & 0x30) >> 4;
	83	info->dp = (nvbios_rd08(bios, data + 0x01) & 0xc0) >> 6;
20014cbe BS	84	if (*len < 4)
20014cbe BS	85	return data;
7f5f518f BS	86	info->hpd \|= (nvbios_rd08(bios, data + 0x02) & 0x03) << 2;
	87	info->dp \|= nvbios_rd08(bios, data + 0x02) & 0x0c;
	88	info->di = (nvbios_rd08(bios, data + 0x02) & 0xf0) >> 4;
	89	info->hpd \|= (nvbios_rd08(bios, data + 0x03) & 0x07) << 4;
	90	info->sr = (nvbios_rd08(bios, data + 0x03) & 0x08) >> 3;
	91	info->lcdid = (nvbios_rd08(bios, data + 0x03) & 0x70) >> 4;
20014cbe BS	92	return data;
	93	default:
	94	break;
	95	}
	96	return 0x00000000;
cb75d97e	97	}