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drm/nouveau/bios: add support for parsing xpio table data 

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
hifive-unleashed-5.1
Ben Skeggs 2012-12-07 10:31:09 +10:00
parent 230881821a
commit 112a12aab8
5 changed files with 105 additions and 4 deletions
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1
drivers/gpu/drm/nouveau/Makefile
View File

@ -40,6 +40,7 @@ nouveau-y += core/subdev/bios/mxm.o
nouveau-y += core/subdev/bios/perf.o
nouveau-y += core/subdev/bios/pll.o
nouveau-y += core/subdev/bios/therm.o
nouveau-y += core/subdev/bios/xpio.o
nouveau-y += core/subdev/bus/nv04.o
nouveau-y += core/subdev/bus/nv31.o
nouveau-y += core/subdev/bus/nv50.o

2
drivers/gpu/drm/nouveau/core/include/subdev/bios/gpio.h
View File

@ -1,8 +1,6 @@
#ifndef __NVBIOS_GPIO_H__
#define __NVBIOS_GPIO_H__
struct nouveau_bios;
enum dcb_gpio_func_name {
DCB_GPIO_PANEL_POWER = 0x01,
DCB_GPIO_TVDAC0 = 0x0c,

19
drivers/gpu/drm/nouveau/core/include/subdev/bios/xpio.h 100644
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@ -0,0 +1,19 @@
#ifndef __NVBIOS_XPIO_H__
#define __NVBIOS_XPIO_H__
#define NVBIOS_XPIO_FLAG_AUX 0x10
#define NVBIOS_XPIO_FLAG_AUX0 0x00
#define NVBIOS_XPIO_FLAG_AUX1 0x10
struct nvbios_xpio {
u8 type;
u8 addr;
u8 flags;
};
u16 dcb_xpio_table(struct nouveau_bios *, u8 idx,
u8 *ver, u8 *hdr, u8 *cnt, u8 *len);
u16 dcb_xpio_parse(struct nouveau_bios *, u8 idx,
u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_xpio *);
#endif

11
drivers/gpu/drm/nouveau/core/subdev/bios/gpio.c
View File

@ -25,6 +25,7 @@
#include <subdev/bios.h>
#include <subdev/bios/dcb.h>
#include <subdev/bios/gpio.h>
#include <subdev/bios/xpio.h>
u16
dcb_gpio_table(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
@ -60,8 +61,14 @@ dcb_gpio_table(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
u16
dcb_gpio_entry(struct nouveau_bios *bios, int idx, int ent, u8 *ver, u8 *len)
{
u8 hdr, cnt;
u16 gpio = !idx ? dcb_gpio_table(bios, ver, &hdr, &cnt, len) : 0x0000;
u8 hdr, cnt, xver; /* use gpio version for xpio entry parsing */
u16 gpio;
if (!idx--)
gpio = dcb_gpio_table(bios, ver, &hdr, &cnt, len);
else
gpio = dcb_xpio_table(bios, idx, &xver, &hdr, &cnt, len);
if (gpio && ent < cnt)
return gpio + hdr + (ent * *len);
return 0x0000;

76
drivers/gpu/drm/nouveau/core/subdev/bios/xpio.c 100644
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@ -0,0 +1,76 @@
/*
* 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/gpio.h>
#include <subdev/bios/xpio.h>
static u16
dcb_xpiod_table(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
{
u16 data = dcb_gpio_table(bios, ver, hdr, cnt, len);
if (data && *ver >= 0x40 && *hdr >= 0x06) {
u16 xpio = nv_ro16(bios, data + 0x04);
if (xpio) {
*ver = nv_ro08(bios, data + 0x00);
*hdr = nv_ro08(bios, data + 0x01);
*cnt = nv_ro08(bios, data + 0x02);
*len = nv_ro08(bios, data + 0x03);
return xpio;
}
}
return 0x0000;
}
u16
dcb_xpio_table(struct nouveau_bios *bios, u8 idx,
u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
{
u16 data = dcb_xpiod_table(bios, ver, hdr, cnt, len);
if (data && idx < *cnt) {
u16 xpio = nv_ro16(bios, data + *hdr + (idx * *len));
if (xpio) {
*ver = nv_ro08(bios, data + 0x00);
*hdr = nv_ro08(bios, data + 0x01);
*cnt = nv_ro08(bios, data + 0x02);
*len = nv_ro08(bios, data + 0x03);
return xpio;
}
}
return 0x0000;
}
u16
dcb_xpio_parse(struct nouveau_bios *bios, u8 idx,
u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
struct nvbios_xpio *info)
{
u16 data = dcb_xpio_table(bios, idx, ver, hdr, cnt, len);
if (data && *len >= 6) {
info->type = nv_ro08(bios, data + 0x04);
info->addr = nv_ro08(bios, data + 0x05);
info->flags = nv_ro08(bios, data + 0x06);
}
return 0x0000;
}