411 lines
10 KiB
C
411 lines
10 KiB
C
/*
|
|
* Copyright 2013 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 "priv.h"
|
|
#include "aux.h"
|
|
#include "bus.h"
|
|
#include "pad.h"
|
|
|
|
#include <core/option.h>
|
|
#include <subdev/bios.h>
|
|
#include <subdev/bios/dcb.h>
|
|
#include <subdev/bios/i2c.h>
|
|
|
|
static struct nvkm_i2c_pad *
|
|
nvkm_i2c_pad_find(struct nvkm_i2c *i2c, int id)
|
|
{
|
|
struct nvkm_i2c_pad *pad;
|
|
|
|
list_for_each_entry(pad, &i2c->pad, head) {
|
|
if (pad->id == id)
|
|
return pad;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
struct nvkm_i2c_bus *
|
|
nvkm_i2c_bus_find(struct nvkm_i2c *i2c, int id)
|
|
{
|
|
struct nvkm_bios *bios = i2c->subdev.device->bios;
|
|
struct nvkm_i2c_bus *bus;
|
|
|
|
if (id == NVKM_I2C_BUS_PRI || id == NVKM_I2C_BUS_SEC) {
|
|
u8 ver, hdr, cnt, len;
|
|
u16 i2c = dcb_i2c_table(bios, &ver, &hdr, &cnt, &len);
|
|
if (i2c && ver >= 0x30) {
|
|
u8 auxidx = nvbios_rd08(bios, i2c + 4);
|
|
if (id == NVKM_I2C_BUS_PRI)
|
|
id = NVKM_I2C_BUS_CCB((auxidx & 0x0f) >> 0);
|
|
else
|
|
id = NVKM_I2C_BUS_CCB((auxidx & 0xf0) >> 4);
|
|
} else {
|
|
id = NVKM_I2C_BUS_CCB(2);
|
|
}
|
|
}
|
|
|
|
list_for_each_entry(bus, &i2c->bus, head) {
|
|
if (bus->id == id)
|
|
return bus;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
struct nvkm_i2c_aux *
|
|
nvkm_i2c_aux_find(struct nvkm_i2c *i2c, int id)
|
|
{
|
|
struct nvkm_i2c_aux *aux;
|
|
|
|
list_for_each_entry(aux, &i2c->aux, head) {
|
|
if (aux->id == id)
|
|
return aux;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
nvkm_i2c_intr_fini(struct nvkm_event *event, int type, int id)
|
|
{
|
|
struct nvkm_i2c *i2c = container_of(event, typeof(*i2c), event);
|
|
struct nvkm_i2c_aux *aux = nvkm_i2c_aux_find(i2c, id);
|
|
if (aux)
|
|
i2c->func->aux_mask(i2c, type, aux->intr, 0);
|
|
}
|
|
|
|
static void
|
|
nvkm_i2c_intr_init(struct nvkm_event *event, int type, int id)
|
|
{
|
|
struct nvkm_i2c *i2c = container_of(event, typeof(*i2c), event);
|
|
struct nvkm_i2c_aux *aux = nvkm_i2c_aux_find(i2c, id);
|
|
if (aux)
|
|
i2c->func->aux_mask(i2c, type, aux->intr, aux->intr);
|
|
}
|
|
|
|
static const struct nvkm_event_func
|
|
nvkm_i2c_intr_func = {
|
|
.init = nvkm_i2c_intr_init,
|
|
.fini = nvkm_i2c_intr_fini,
|
|
};
|
|
|
|
static void
|
|
nvkm_i2c_intr(struct nvkm_subdev *subdev)
|
|
{
|
|
struct nvkm_i2c *i2c = nvkm_i2c(subdev);
|
|
struct nvkm_i2c_aux *aux;
|
|
u32 hi, lo, rq, tx;
|
|
|
|
if (!i2c->func->aux_stat)
|
|
return;
|
|
|
|
i2c->func->aux_stat(i2c, &hi, &lo, &rq, &tx);
|
|
if (!hi && !lo && !rq && !tx)
|
|
return;
|
|
|
|
list_for_each_entry(aux, &i2c->aux, head) {
|
|
u32 mask = 0;
|
|
if (hi & aux->intr) mask |= NVKM_I2C_PLUG;
|
|
if (lo & aux->intr) mask |= NVKM_I2C_UNPLUG;
|
|
if (rq & aux->intr) mask |= NVKM_I2C_IRQ;
|
|
if (tx & aux->intr) mask |= NVKM_I2C_DONE;
|
|
if (mask)
|
|
nvkm_event_ntfy(&i2c->event, aux->id, mask);
|
|
}
|
|
}
|
|
|
|
static int
|
|
nvkm_i2c_fini(struct nvkm_subdev *subdev, bool suspend)
|
|
{
|
|
struct nvkm_i2c *i2c = nvkm_i2c(subdev);
|
|
struct nvkm_i2c_pad *pad;
|
|
struct nvkm_i2c_bus *bus;
|
|
struct nvkm_i2c_aux *aux;
|
|
u32 mask;
|
|
|
|
list_for_each_entry(aux, &i2c->aux, head) {
|
|
nvkm_i2c_aux_fini(aux);
|
|
}
|
|
|
|
list_for_each_entry(bus, &i2c->bus, head) {
|
|
nvkm_i2c_bus_fini(bus);
|
|
}
|
|
|
|
if ((mask = (1 << i2c->func->aux) - 1), i2c->func->aux_stat) {
|
|
i2c->func->aux_mask(i2c, NVKM_I2C_ANY, mask, 0);
|
|
i2c->func->aux_stat(i2c, &mask, &mask, &mask, &mask);
|
|
}
|
|
|
|
list_for_each_entry(pad, &i2c->pad, head) {
|
|
nvkm_i2c_pad_fini(pad);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
nvkm_i2c_preinit(struct nvkm_subdev *subdev)
|
|
{
|
|
struct nvkm_i2c *i2c = nvkm_i2c(subdev);
|
|
struct nvkm_i2c_bus *bus;
|
|
struct nvkm_i2c_pad *pad;
|
|
|
|
/*
|
|
* We init our i2c busses as early as possible, since they may be
|
|
* needed by the vbios init scripts on some cards
|
|
*/
|
|
list_for_each_entry(pad, &i2c->pad, head)
|
|
nvkm_i2c_pad_init(pad);
|
|
list_for_each_entry(bus, &i2c->bus, head)
|
|
nvkm_i2c_bus_init(bus);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
nvkm_i2c_init(struct nvkm_subdev *subdev)
|
|
{
|
|
struct nvkm_i2c *i2c = nvkm_i2c(subdev);
|
|
struct nvkm_i2c_bus *bus;
|
|
struct nvkm_i2c_pad *pad;
|
|
struct nvkm_i2c_aux *aux;
|
|
|
|
list_for_each_entry(pad, &i2c->pad, head) {
|
|
nvkm_i2c_pad_init(pad);
|
|
}
|
|
|
|
list_for_each_entry(bus, &i2c->bus, head) {
|
|
nvkm_i2c_bus_init(bus);
|
|
}
|
|
|
|
list_for_each_entry(aux, &i2c->aux, head) {
|
|
nvkm_i2c_aux_init(aux);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void *
|
|
nvkm_i2c_dtor(struct nvkm_subdev *subdev)
|
|
{
|
|
struct nvkm_i2c *i2c = nvkm_i2c(subdev);
|
|
|
|
nvkm_event_fini(&i2c->event);
|
|
|
|
while (!list_empty(&i2c->aux)) {
|
|
struct nvkm_i2c_aux *aux =
|
|
list_first_entry(&i2c->aux, typeof(*aux), head);
|
|
nvkm_i2c_aux_del(&aux);
|
|
}
|
|
|
|
while (!list_empty(&i2c->bus)) {
|
|
struct nvkm_i2c_bus *bus =
|
|
list_first_entry(&i2c->bus, typeof(*bus), head);
|
|
nvkm_i2c_bus_del(&bus);
|
|
}
|
|
|
|
while (!list_empty(&i2c->pad)) {
|
|
struct nvkm_i2c_pad *pad =
|
|
list_first_entry(&i2c->pad, typeof(*pad), head);
|
|
nvkm_i2c_pad_del(&pad);
|
|
}
|
|
|
|
return i2c;
|
|
}
|
|
|
|
static const struct nvkm_subdev_func
|
|
nvkm_i2c = {
|
|
.dtor = nvkm_i2c_dtor,
|
|
.preinit = nvkm_i2c_preinit,
|
|
.init = nvkm_i2c_init,
|
|
.fini = nvkm_i2c_fini,
|
|
.intr = nvkm_i2c_intr,
|
|
};
|
|
|
|
static const struct nvkm_i2c_drv {
|
|
u8 bios;
|
|
u8 addr;
|
|
int (*pad_new)(struct nvkm_i2c_bus *, int id, u8 addr,
|
|
struct nvkm_i2c_pad **);
|
|
}
|
|
nvkm_i2c_drv[] = {
|
|
{ 0x0d, 0x39, anx9805_pad_new },
|
|
{ 0x0e, 0x3b, anx9805_pad_new },
|
|
{}
|
|
};
|
|
|
|
int
|
|
nvkm_i2c_new_(const struct nvkm_i2c_func *func, struct nvkm_device *device,
|
|
enum nvkm_subdev_type type, int inst, struct nvkm_i2c **pi2c)
|
|
{
|
|
struct nvkm_bios *bios = device->bios;
|
|
struct nvkm_i2c *i2c;
|
|
struct dcb_i2c_entry ccbE;
|
|
struct dcb_output dcbE;
|
|
u8 ver, hdr;
|
|
int ret, i;
|
|
|
|
if (!(i2c = *pi2c = kzalloc(sizeof(*i2c), GFP_KERNEL)))
|
|
return -ENOMEM;
|
|
|
|
nvkm_subdev_ctor(&nvkm_i2c, device, type, inst, &i2c->subdev);
|
|
i2c->func = func;
|
|
INIT_LIST_HEAD(&i2c->pad);
|
|
INIT_LIST_HEAD(&i2c->bus);
|
|
INIT_LIST_HEAD(&i2c->aux);
|
|
|
|
i = -1;
|
|
while (!dcb_i2c_parse(bios, ++i, &ccbE)) {
|
|
struct nvkm_i2c_pad *pad = NULL;
|
|
struct nvkm_i2c_bus *bus = NULL;
|
|
struct nvkm_i2c_aux *aux = NULL;
|
|
|
|
nvkm_debug(&i2c->subdev, "ccb %02x: type %02x drive %02x "
|
|
"sense %02x share %02x auxch %02x\n", i, ccbE.type,
|
|
ccbE.drive, ccbE.sense, ccbE.share, ccbE.auxch);
|
|
|
|
if (ccbE.share != DCB_I2C_UNUSED) {
|
|
const int id = NVKM_I2C_PAD_HYBRID(ccbE.share);
|
|
if (!(pad = nvkm_i2c_pad_find(i2c, id)))
|
|
ret = func->pad_s_new(i2c, id, &pad);
|
|
else
|
|
ret = 0;
|
|
} else {
|
|
ret = func->pad_x_new(i2c, NVKM_I2C_PAD_CCB(i), &pad);
|
|
}
|
|
|
|
if (ret) {
|
|
nvkm_error(&i2c->subdev, "ccb %02x pad, %d\n", i, ret);
|
|
nvkm_i2c_pad_del(&pad);
|
|
continue;
|
|
}
|
|
|
|
if (pad->func->bus_new_0 && ccbE.type == DCB_I2C_NV04_BIT) {
|
|
ret = pad->func->bus_new_0(pad, NVKM_I2C_BUS_CCB(i),
|
|
ccbE.drive,
|
|
ccbE.sense, &bus);
|
|
} else
|
|
if (pad->func->bus_new_4 &&
|
|
( ccbE.type == DCB_I2C_NV4E_BIT ||
|
|
ccbE.type == DCB_I2C_NVIO_BIT ||
|
|
(ccbE.type == DCB_I2C_PMGR &&
|
|
ccbE.drive != DCB_I2C_UNUSED))) {
|
|
ret = pad->func->bus_new_4(pad, NVKM_I2C_BUS_CCB(i),
|
|
ccbE.drive, &bus);
|
|
}
|
|
|
|
if (ret) {
|
|
nvkm_error(&i2c->subdev, "ccb %02x bus, %d\n", i, ret);
|
|
nvkm_i2c_bus_del(&bus);
|
|
}
|
|
|
|
if (pad->func->aux_new_6 &&
|
|
( ccbE.type == DCB_I2C_NVIO_AUX ||
|
|
(ccbE.type == DCB_I2C_PMGR &&
|
|
ccbE.auxch != DCB_I2C_UNUSED))) {
|
|
ret = pad->func->aux_new_6(pad, NVKM_I2C_BUS_CCB(i),
|
|
ccbE.auxch, &aux);
|
|
} else {
|
|
ret = 0;
|
|
}
|
|
|
|
if (ret) {
|
|
nvkm_error(&i2c->subdev, "ccb %02x aux, %d\n", i, ret);
|
|
nvkm_i2c_aux_del(&aux);
|
|
}
|
|
|
|
if (ccbE.type != DCB_I2C_UNUSED && !bus && !aux) {
|
|
nvkm_warn(&i2c->subdev, "ccb %02x was ignored\n", i);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
i = -1;
|
|
while (dcb_outp_parse(bios, ++i, &ver, &hdr, &dcbE)) {
|
|
const struct nvkm_i2c_drv *drv = nvkm_i2c_drv;
|
|
struct nvkm_i2c_bus *bus;
|
|
struct nvkm_i2c_pad *pad;
|
|
|
|
/* internal outputs handled by native i2c busses (above) */
|
|
if (!dcbE.location)
|
|
continue;
|
|
|
|
/* we need an i2c bus to talk to the external encoder */
|
|
bus = nvkm_i2c_bus_find(i2c, dcbE.i2c_index);
|
|
if (!bus) {
|
|
nvkm_debug(&i2c->subdev, "dcb %02x no bus\n", i);
|
|
continue;
|
|
}
|
|
|
|
/* ... and a driver for it */
|
|
while (drv->pad_new) {
|
|
if (drv->bios == dcbE.extdev)
|
|
break;
|
|
drv++;
|
|
}
|
|
|
|
if (!drv->pad_new) {
|
|
nvkm_debug(&i2c->subdev, "dcb %02x drv %02x unknown\n",
|
|
i, dcbE.extdev);
|
|
continue;
|
|
}
|
|
|
|
/* find/create an instance of the driver */
|
|
pad = nvkm_i2c_pad_find(i2c, NVKM_I2C_PAD_EXT(dcbE.extdev));
|
|
if (!pad) {
|
|
const int id = NVKM_I2C_PAD_EXT(dcbE.extdev);
|
|
ret = drv->pad_new(bus, id, drv->addr, &pad);
|
|
if (ret) {
|
|
nvkm_error(&i2c->subdev, "dcb %02x pad, %d\n",
|
|
i, ret);
|
|
nvkm_i2c_pad_del(&pad);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/* create any i2c bus / aux channel required by the output */
|
|
if (pad->func->aux_new_6 && dcbE.type == DCB_OUTPUT_DP) {
|
|
const int id = NVKM_I2C_AUX_EXT(dcbE.extdev);
|
|
struct nvkm_i2c_aux *aux = NULL;
|
|
ret = pad->func->aux_new_6(pad, id, 0, &aux);
|
|
if (ret) {
|
|
nvkm_error(&i2c->subdev, "dcb %02x aux, %d\n",
|
|
i, ret);
|
|
nvkm_i2c_aux_del(&aux);
|
|
}
|
|
} else
|
|
if (pad->func->bus_new_4) {
|
|
const int id = NVKM_I2C_BUS_EXT(dcbE.extdev);
|
|
struct nvkm_i2c_bus *bus = NULL;
|
|
ret = pad->func->bus_new_4(pad, id, 0, &bus);
|
|
if (ret) {
|
|
nvkm_error(&i2c->subdev, "dcb %02x bus, %d\n",
|
|
i, ret);
|
|
nvkm_i2c_bus_del(&bus);
|
|
}
|
|
}
|
|
}
|
|
|
|
return nvkm_event_init(&nvkm_i2c_intr_func, &i2c->subdev, 4, i, &i2c->event);
|
|
}
|