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reset: reset-scmi: Port driver to the new scmi_reset_proto_ops interface

Browse source 
Port the scmi reset driver to the new SCMI reset interface based on
protocol handles and common devm_get_ops().

Link: https://lore.kernel.org/r/20210316124903.35011-22-cristian.marussi@arm.com
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Cristian Marussi 2021-03-16 12:48:46 +00:00 committed by Sudeep Holla
parent 7e02934422
commit 35cc263062
1 changed files with 20 additions and 13 deletions
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33
drivers/reset/reset-scmi.c
View file

@ -2,7 +2,7 @@
/*
* ARM System Control and Management Interface (ARM SCMI) reset driver
*
* Copyright (C) 2019 ARM Ltd.
* Copyright (C) 2019-2021 ARM Ltd.
*/
#include <linux/module.h>
@ -11,18 +11,20 @@
#include <linux/reset-controller.h>
#include <linux/scmi_protocol.h>
static const struct scmi_reset_proto_ops *reset_ops;
/**
* struct scmi_reset_data - reset controller information structure
* @rcdev: reset controller entity
* @handle: ARM SCMI handle used for communication with system controller
* @ph: ARM SCMI protocol handle used for communication with system controller
*/
struct scmi_reset_data {
struct reset_controller_dev rcdev;
const struct scmi_handle *handle;
const struct scmi_protocol_handle *ph;
};
#define to_scmi_reset_data(p) container_of((p), struct scmi_reset_data, rcdev)
#define to_scmi_handle(p) (to_scmi_reset_data(p)->handle)
#define to_scmi_handle(p) (to_scmi_reset_data(p)->ph)
/**
* scmi_reset_assert() - assert device reset
@ -37,9 +39,9 @@ struct scmi_reset_data {
static int
scmi_reset_assert(struct reset_controller_dev *rcdev, unsigned long id)
{
const struct scmi_handle *handle = to_scmi_handle(rcdev);
const struct scmi_protocol_handle *ph = to_scmi_handle(rcdev);
return handle->reset_ops->assert(handle, id);
return reset_ops->assert(ph, id);
}
/**
@ -55,9 +57,9 @@ scmi_reset_assert(struct reset_controller_dev *rcdev, unsigned long id)
static int
scmi_reset_deassert(struct reset_controller_dev *rcdev, unsigned long id)
{
const struct scmi_handle *handle = to_scmi_handle(rcdev);
const struct scmi_protocol_handle *ph = to_scmi_handle(rcdev);
return handle->reset_ops->deassert(handle, id);
return reset_ops->deassert(ph, id);
}
/**
@ -73,9 +75,9 @@ scmi_reset_deassert(struct reset_controller_dev *rcdev, unsigned long id)
static int
scmi_reset_reset(struct reset_controller_dev *rcdev, unsigned long id)
{
const struct scmi_handle *handle = to_scmi_handle(rcdev);
const struct scmi_protocol_handle *ph = to_scmi_handle(rcdev);
return handle->reset_ops->reset(handle, id);
return reset_ops->reset(ph, id);
}
static const struct reset_control_ops scmi_reset_ops = {
@ -90,10 +92,15 @@ static int scmi_reset_probe(struct scmi_device *sdev)
struct device *dev = &sdev->dev;
struct device_node *np = dev->of_node;
const struct scmi_handle *handle = sdev->handle;
struct scmi_protocol_handle *ph;
if (!handle || !handle->reset_ops)
if (!handle)
return -ENODEV;
reset_ops = handle->devm_protocol_get(sdev, SCMI_PROTOCOL_RESET, &ph);
if (IS_ERR(reset_ops))
return PTR_ERR(reset_ops);
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
@ -101,8 +108,8 @@ static int scmi_reset_probe(struct scmi_device *sdev)
data->rcdev.ops = &scmi_reset_ops;
data->rcdev.owner = THIS_MODULE;
data->rcdev.of_node = np;
data->rcdev.nr_resets = handle->reset_ops->num_domains_get(handle);
data->handle = handle;
data->rcdev.nr_resets = reset_ops->num_domains_get(ph);
data->ph = ph;
return devm_reset_controller_register(dev, &data->rcdev);
}