Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-10 23:24:38 +00:00
Code Issues Projects Releases Packages Wiki Activity

reset: scmi: support SCMI multi-channel

Browse source 
Update SCMI reset controller driver to get its assigned SCMI channel
during initialization. This change allows SCMI reset domain protocol
to use a dedicated channel when defined in the DT. The reference is
saved in SCMI reset controller driver private data.

Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
This commit is contained in:
Etienne Carriere 2022-05-31 18:09:26 +02:00 committed by Tom Rini
parent 38a905ecf9
commit f487a88c64
1 changed files with 22 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

25
drivers/reset/reset-scmi.c
View file

@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2019-2020 Linaro Limited
* Copyright (C) 2019-2022 Linaro Limited
*/
#define LOG_CATEGORY UCLASS_RESET
@ -13,8 +13,17 @@
#include <scmi_protocols.h>
#include <asm/types.h>
/**
* struct scmi_reset_priv - Private data for SCMI reset controller
* @channel: Reference to the SCMI channel to use
*/
struct scmi_reset_priv {
struct scmi_channel *channel;
};
static int scmi_reset_set_level(struct reset_ctl *rst, bool assert_not_deassert)
{
struct scmi_reset_priv *priv = dev_get_priv(rst->dev);
struct scmi_rd_reset_in in = {
.domain_id = rst->id,
.flags = assert_not_deassert ? SCMI_RD_RESET_FLAG_ASSERT : 0,
@ -26,7 +35,7 @@ static int scmi_reset_set_level(struct reset_ctl *rst, bool assert_not_deassert)
in, out);
int ret;
ret = devm_scmi_process_msg(rst->dev, NULL, &msg);
ret = devm_scmi_process_msg(rst->dev, priv->channel, &msg);
if (ret)
return ret;
@ -45,6 +54,7 @@ static int scmi_reset_deassert(struct reset_ctl *rst)
static int scmi_reset_request(struct reset_ctl *rst)
{
struct scmi_reset_priv *priv = dev_get_priv(rst->dev);
struct scmi_rd_attr_in in = {
.domain_id = rst->id,
};
@ -58,7 +68,7 @@ static int scmi_reset_request(struct reset_ctl *rst)
* We don't really care about the attribute, just check
* the reset domain exists.
*/
ret = devm_scmi_process_msg(rst->dev, NULL, &msg);
ret = devm_scmi_process_msg(rst->dev, priv->channel, &msg);
if (ret)
return ret;
@ -71,8 +81,17 @@ static const struct reset_ops scmi_reset_domain_ops = {
.rst_deassert = scmi_reset_deassert,
};
static int scmi_reset_probe(struct udevice *dev)
{
struct scmi_reset_priv *priv = dev_get_priv(dev);
return devm_scmi_of_get_channel(dev, &priv->channel);
}
U_BOOT_DRIVER(scmi_reset_domain) = {
.name = "scmi_reset_domain",
.id = UCLASS_RESET,
.ops = &scmi_reset_domain_ops,
.probe = scmi_reset_probe,
.priv_auto = sizeof(struct scmi_reset_priv *),
};