|
|
@@ -1,174 +0,0 @@
|
|
|
-/*
|
|
|
- * Copyright 2009 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 "aux.h"
|
|
|
-#include "pad.h"
|
|
|
-
|
|
|
-static int
|
|
|
-nvkm_i2c_aux_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
|
|
|
-{
|
|
|
- struct nvkm_i2c_aux *aux = container_of(adap, typeof(*aux), i2c);
|
|
|
- struct i2c_msg *msg = msgs;
|
|
|
- int ret, mcnt = num;
|
|
|
-
|
|
|
- ret = nvkm_i2c_aux_acquire(aux);
|
|
|
- if (ret)
|
|
|
- return ret;
|
|
|
-
|
|
|
- while (mcnt--) {
|
|
|
- u8 remaining = msg->len;
|
|
|
- u8 *ptr = msg->buf;
|
|
|
-
|
|
|
- while (remaining) {
|
|
|
- u8 cnt = (remaining > 16) ? 16 : remaining;
|
|
|
- u8 cmd;
|
|
|
-
|
|
|
- if (msg->flags & I2C_M_RD)
|
|
|
- cmd = 1;
|
|
|
- else
|
|
|
- cmd = 0;
|
|
|
-
|
|
|
- if (mcnt || remaining > 16)
|
|
|
- cmd |= 4; /* MOT */
|
|
|
-
|
|
|
- ret = aux->func->xfer(aux, true, cmd, msg->addr, ptr, cnt);
|
|
|
- if (ret < 0) {
|
|
|
- nvkm_i2c_aux_release(aux);
|
|
|
- return ret;
|
|
|
- }
|
|
|
-
|
|
|
- ptr += cnt;
|
|
|
- remaining -= cnt;
|
|
|
- }
|
|
|
-
|
|
|
- msg++;
|
|
|
- }
|
|
|
-
|
|
|
- nvkm_i2c_aux_release(aux);
|
|
|
- return num;
|
|
|
-}
|
|
|
-
|
|
|
-static u32
|
|
|
-nvkm_i2c_aux_i2c_func(struct i2c_adapter *adap)
|
|
|
-{
|
|
|
- return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
|
|
|
-}
|
|
|
-
|
|
|
-const struct i2c_algorithm
|
|
|
-nvkm_i2c_aux_i2c_algo = {
|
|
|
- .master_xfer = nvkm_i2c_aux_i2c_xfer,
|
|
|
- .functionality = nvkm_i2c_aux_i2c_func
|
|
|
-};
|
|
|
-
|
|
|
-void
|
|
|
-nvkm_i2c_aux_monitor(struct nvkm_i2c_aux *aux, bool monitor)
|
|
|
-{
|
|
|
- struct nvkm_i2c_pad *pad = aux->pad;
|
|
|
- AUX_TRACE(aux, "monitor: %s", monitor ? "yes" : "no");
|
|
|
- if (monitor)
|
|
|
- nvkm_i2c_pad_mode(pad, NVKM_I2C_PAD_AUX);
|
|
|
- else
|
|
|
- nvkm_i2c_pad_mode(pad, NVKM_I2C_PAD_OFF);
|
|
|
-}
|
|
|
-
|
|
|
-void
|
|
|
-nvkm_i2c_aux_release(struct nvkm_i2c_aux *aux)
|
|
|
-{
|
|
|
- struct nvkm_i2c_pad *pad = aux->pad;
|
|
|
- AUX_TRACE(aux, "release");
|
|
|
- nvkm_i2c_pad_release(pad);
|
|
|
- mutex_unlock(&aux->mutex);
|
|
|
-}
|
|
|
-
|
|
|
-int
|
|
|
-nvkm_i2c_aux_acquire(struct nvkm_i2c_aux *aux)
|
|
|
-{
|
|
|
- struct nvkm_i2c_pad *pad = aux->pad;
|
|
|
- int ret;
|
|
|
- AUX_TRACE(aux, "acquire");
|
|
|
- mutex_lock(&aux->mutex);
|
|
|
- ret = nvkm_i2c_pad_acquire(pad, NVKM_I2C_PAD_AUX);
|
|
|
- if (ret)
|
|
|
- mutex_unlock(&aux->mutex);
|
|
|
- return ret;
|
|
|
-}
|
|
|
-
|
|
|
-int
|
|
|
-nvkm_i2c_aux_xfer(struct nvkm_i2c_aux *aux, bool retry, u8 type,
|
|
|
- u32 addr, u8 *data, u8 size)
|
|
|
-{
|
|
|
- return aux->func->xfer(aux, retry, type, addr, data, size);
|
|
|
-}
|
|
|
-
|
|
|
-int
|
|
|
-nvkm_i2c_aux_lnk_ctl(struct nvkm_i2c_aux *aux, int nr, int bw, bool ef)
|
|
|
-{
|
|
|
- if (aux->func->lnk_ctl)
|
|
|
- return aux->func->lnk_ctl(aux, nr, bw, ef);
|
|
|
- return -ENODEV;
|
|
|
-}
|
|
|
-
|
|
|
-void
|
|
|
-nvkm_i2c_aux_del(struct nvkm_i2c_aux **paux)
|
|
|
-{
|
|
|
- struct nvkm_i2c_aux *aux = *paux;
|
|
|
- if (aux && !WARN_ON(!aux->func)) {
|
|
|
- AUX_TRACE(aux, "dtor");
|
|
|
- list_del(&aux->head);
|
|
|
- i2c_del_adapter(&aux->i2c);
|
|
|
- kfree(*paux);
|
|
|
- *paux = NULL;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-int
|
|
|
-nvkm_i2c_aux_ctor(const struct nvkm_i2c_aux_func *func,
|
|
|
- struct nvkm_i2c_pad *pad, int id,
|
|
|
- struct nvkm_i2c_aux *aux)
|
|
|
-{
|
|
|
- struct nvkm_device *device = pad->i2c->subdev.device;
|
|
|
-
|
|
|
- aux->func = func;
|
|
|
- aux->pad = pad;
|
|
|
- aux->id = id;
|
|
|
- mutex_init(&aux->mutex);
|
|
|
- list_add_tail(&aux->head, &pad->i2c->aux);
|
|
|
- AUX_TRACE(aux, "ctor");
|
|
|
-
|
|
|
- snprintf(aux->i2c.name, sizeof(aux->i2c.name), "nvkm-%s-aux-%04x",
|
|
|
- dev_name(device->dev), id);
|
|
|
- aux->i2c.owner = THIS_MODULE;
|
|
|
- aux->i2c.dev.parent = device->dev;
|
|
|
- aux->i2c.algo = &nvkm_i2c_aux_i2c_algo;
|
|
|
- return i2c_add_adapter(&aux->i2c);
|
|
|
-}
|
|
|
-
|
|
|
-int
|
|
|
-nvkm_i2c_aux_new_(const struct nvkm_i2c_aux_func *func,
|
|
|
- struct nvkm_i2c_pad *pad, int id,
|
|
|
- struct nvkm_i2c_aux **paux)
|
|
|
-{
|
|
|
- if (!(*paux = kzalloc(sizeof(**paux), GFP_KERNEL)))
|
|
|
- return -ENOMEM;
|
|
|
- return nvkm_i2c_aux_ctor(func, pad, id, *paux);
|
|
|
-}
|
