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authorCristian Marussi <cristian.marussi@arm.com>2021-03-16 12:48:46 +0000
committerSudeep Holla <sudeep.holla@arm.com>2021-03-30 16:34:54 +0100
commit35cc2630627d2863892decf5a81b68b05bbeda5f (patch)
treecf86eac61a136d0c2be43de02da135f48ecc287c /drivers/reset
parent7e029344223824dbf21e759bf9c0d08f633edb16 (diff)
downloadlinux-35cc2630627d2863892decf5a81b68b05bbeda5f.tar.gz
reset: reset-scmi: Port driver to the new scmi_reset_proto_ops interface
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>
Diffstat (limited to 'drivers/reset')
-rw-r--r--drivers/reset/reset-scmi.c33
1 files changed, 20 insertions, 13 deletions
diff --git a/drivers/reset/reset-scmi.c b/drivers/reset/reset-scmi.c
index 8d3a858e3b19..4335811e0cfa 100644
--- a/drivers/reset/reset-scmi.c
+++ b/drivers/reset/reset-scmi.c
@@ -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);
}