mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2025-08-09 16:56:58 +02:00
c6112dd247
Fix build errors, add some debug logging. Acked-by: Sumit Garg <sumit.garg@linaro.org> Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
111 lines
2.6 KiB
C
111 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
|
|
*/
|
|
|
|
#include <dm/device.h>
|
|
#include <dm/device_compat.h>
|
|
#include <linux/bug.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/list.h>
|
|
#include <linux/types.h>
|
|
|
|
#include <soc/qcom/rpmh.h>
|
|
|
|
#include "rpmh-internal.h"
|
|
|
|
#define RPMH_TIMEOUT_MS msecs_to_jiffies(10000)
|
|
|
|
#define DEFINE_RPMH_MSG_ONSTACK(device, s, name) \
|
|
struct rpmh_request name = { \
|
|
.msg = { \
|
|
.state = s, \
|
|
.cmds = name.cmd, \
|
|
.num_cmds = 0, \
|
|
}, \
|
|
.cmd = { { 0 } }, \
|
|
.dev = device, \
|
|
.needs_free = false, \
|
|
}
|
|
|
|
#define ctrlr_to_drv(ctrlr) container_of(ctrlr, struct rsc_drv, client)
|
|
|
|
static struct rpmh_ctrlr *get_rpmh_ctrlr(const struct udevice *dev)
|
|
{
|
|
struct rsc_drv *drv = (struct rsc_drv *)dev_get_priv(dev->parent);
|
|
|
|
if (!drv) {
|
|
log_err("BUG: no RPMh driver for %s (parent %s)\n", dev->name, dev->parent->name);
|
|
BUG();
|
|
}
|
|
|
|
return &drv->client;
|
|
}
|
|
|
|
/**
|
|
* __rpmh_write: Cache and send the RPMH request
|
|
*
|
|
* @dev: The device making the request
|
|
* @state: Active/Sleep request type
|
|
* @rpm_msg: The data that needs to be sent (cmds).
|
|
*
|
|
* Cache the RPMH request and send if the state is ACTIVE_ONLY.
|
|
* SLEEP/WAKE_ONLY requests are not sent to the controller at
|
|
* this time. Use rpmh_flush() to send them to the controller.
|
|
*/
|
|
static int __rpmh_write(const struct udevice *dev, enum rpmh_state state,
|
|
struct rpmh_request *rpm_msg)
|
|
{
|
|
struct rpmh_ctrlr *ctrlr = get_rpmh_ctrlr(dev);
|
|
|
|
if (state != RPMH_ACTIVE_ONLY_STATE) {
|
|
log_err("only ACTIVE_ONLY state supported\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return rpmh_rsc_send_data(ctrlr_to_drv(ctrlr), &rpm_msg->msg);
|
|
}
|
|
|
|
static int __fill_rpmh_msg(struct rpmh_request *req, enum rpmh_state state,
|
|
const struct tcs_cmd *cmd, u32 n)
|
|
{
|
|
if (!cmd || !n || n > MAX_RPMH_PAYLOAD)
|
|
return -EINVAL;
|
|
|
|
memcpy(req->cmd, cmd, n * sizeof(*cmd));
|
|
|
|
req->msg.state = state;
|
|
req->msg.cmds = req->cmd;
|
|
req->msg.num_cmds = n;
|
|
|
|
debug("rpmh_msg: %d, %d cmds [first %#x/%#x]\n", state, n, cmd->addr, cmd->data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* rpmh_write: Write a set of RPMH commands and block until response
|
|
*
|
|
* @dev: The device making the request
|
|
* @state: Active/sleep set
|
|
* @cmd: The payload data
|
|
* @n: The number of elements in @cmd
|
|
*
|
|
* May sleep. Do not call from atomic contexts.
|
|
*/
|
|
int rpmh_write(const struct udevice *dev, enum rpmh_state state,
|
|
const struct tcs_cmd *cmd, u32 n)
|
|
{
|
|
DEFINE_RPMH_MSG_ONSTACK(dev, state, rpm_msg);
|
|
int ret;
|
|
|
|
ret = __fill_rpmh_msg(&rpm_msg, state, cmd, n);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = __rpmh_write(dev, state, &rpm_msg);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rpmh_write);
|