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Message-ID: <20230826125308.462328-2-cristian.marussi@arm.com>
Date: Sat, 26 Aug 2023 13:53:03 +0100
From: Cristian Marussi <cristian.marussi@....com>
To: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc: sudeep.holla@....com, james.quinlan@...adcom.com,
f.fainelli@...il.com, vincent.guittot@...aro.org,
etienne.carriere@...s.st.com, peng.fan@....nxp.com,
chuck.cannon@....com, souvik.chakravarty@....com,
nicola.mazzucato@....com,
Cristian Marussi <cristian.marussi@....com>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>, linux-clk@...r.kernel.org
Subject: [PATCH v2 1/6] firmware: arm_scmi: Simplify enable/disable Clock operations
SCMI Clock enable/disable operations come in 2 different flavours which
simply just differ in how the underlying SCMI transactions is carried on:
atomic or not.
Currently we expose such SCMI operations through 2 distinctly named
wrappers, that, in turn, are wrapped into another couple of similarly and
distinctly named callbacks inside SCMI Clock driver user.
Reduce the churn of duplicated wrappers by adding a param to SCMI Clock
enable/disable operations to ask for atomic operation while removing the
_atomic version of such operations.
No functional change.
CC: Michael Turquette <mturquette@...libre.com>
CC: Stephen Boyd <sboyd@...nel.org>
CC: linux-clk@...r.kernel.org
Signed-off-by: Cristian Marussi <cristian.marussi@....com>
---
v1 --> v2
- more descriptive commit message
- added a few defines to make clear what the boolean param means
---
drivers/clk/clk-scmi.c | 11 +++++++----
drivers/firmware/arm_scmi/clock.c | 24 ++++++------------------
include/linux/scmi_protocol.h | 9 ++++-----
3 files changed, 17 insertions(+), 27 deletions(-)
diff --git a/drivers/clk/clk-scmi.c b/drivers/clk/clk-scmi.c
index 2c7a830ce308..b7a180b3443e 100644
--- a/drivers/clk/clk-scmi.c
+++ b/drivers/clk/clk-scmi.c
@@ -13,6 +13,9 @@
#include <linux/scmi_protocol.h>
#include <asm/div64.h>
+#define NOT_ATOMIC false
+#define ATOMIC true
+
static const struct scmi_clk_proto_ops *scmi_proto_clk_ops;
struct scmi_clk {
@@ -78,28 +81,28 @@ static int scmi_clk_enable(struct clk_hw *hw)
{
struct scmi_clk *clk = to_scmi_clk(hw);
- return scmi_proto_clk_ops->enable(clk->ph, clk->id);
+ return scmi_proto_clk_ops->enable(clk->ph, clk->id, NOT_ATOMIC);
}
static void scmi_clk_disable(struct clk_hw *hw)
{
struct scmi_clk *clk = to_scmi_clk(hw);
- scmi_proto_clk_ops->disable(clk->ph, clk->id);
+ scmi_proto_clk_ops->disable(clk->ph, clk->id, NOT_ATOMIC);
}
static int scmi_clk_atomic_enable(struct clk_hw *hw)
{
struct scmi_clk *clk = to_scmi_clk(hw);
- return scmi_proto_clk_ops->enable_atomic(clk->ph, clk->id);
+ return scmi_proto_clk_ops->enable(clk->ph, clk->id, ATOMIC);
}
static void scmi_clk_atomic_disable(struct clk_hw *hw)
{
struct scmi_clk *clk = to_scmi_clk(hw);
- scmi_proto_clk_ops->disable_atomic(clk->ph, clk->id);
+ scmi_proto_clk_ops->disable(clk->ph, clk->id, ATOMIC);
}
/*
diff --git a/drivers/firmware/arm_scmi/clock.c b/drivers/firmware/arm_scmi/clock.c
index e6e087686e8c..1e8fae4b6570 100644
--- a/drivers/firmware/arm_scmi/clock.c
+++ b/drivers/firmware/arm_scmi/clock.c
@@ -418,26 +418,16 @@ scmi_clock_config_set(const struct scmi_protocol_handle *ph, u32 clk_id,
return ret;
}
-static int scmi_clock_enable(const struct scmi_protocol_handle *ph, u32 clk_id)
+static int scmi_clock_enable(const struct scmi_protocol_handle *ph, u32 clk_id,
+ bool atomic)
{
- return scmi_clock_config_set(ph, clk_id, CLOCK_ENABLE, false);
+ return scmi_clock_config_set(ph, clk_id, CLOCK_ENABLE, atomic);
}
-static int scmi_clock_disable(const struct scmi_protocol_handle *ph, u32 clk_id)
+static int scmi_clock_disable(const struct scmi_protocol_handle *ph, u32 clk_id,
+ bool atomic)
{
- return scmi_clock_config_set(ph, clk_id, 0, false);
-}
-
-static int scmi_clock_enable_atomic(const struct scmi_protocol_handle *ph,
- u32 clk_id)
-{
- return scmi_clock_config_set(ph, clk_id, CLOCK_ENABLE, true);
-}
-
-static int scmi_clock_disable_atomic(const struct scmi_protocol_handle *ph,
- u32 clk_id)
-{
- return scmi_clock_config_set(ph, clk_id, 0, true);
+ return scmi_clock_config_set(ph, clk_id, 0, atomic);
}
static int scmi_clock_count_get(const struct scmi_protocol_handle *ph)
@@ -470,8 +460,6 @@ static const struct scmi_clk_proto_ops clk_proto_ops = {
.rate_set = scmi_clock_rate_set,
.enable = scmi_clock_enable,
.disable = scmi_clock_disable,
- .enable_atomic = scmi_clock_enable_atomic,
- .disable_atomic = scmi_clock_disable_atomic,
};
static int scmi_clk_rate_notify(const struct scmi_protocol_handle *ph,
diff --git a/include/linux/scmi_protocol.h b/include/linux/scmi_protocol.h
index 99c1405decd7..cb2afcc733a6 100644
--- a/include/linux/scmi_protocol.h
+++ b/include/linux/scmi_protocol.h
@@ -90,11 +90,10 @@ struct scmi_clk_proto_ops {
u64 *rate);
int (*rate_set)(const struct scmi_protocol_handle *ph, u32 clk_id,
u64 rate);
- int (*enable)(const struct scmi_protocol_handle *ph, u32 clk_id);
- int (*disable)(const struct scmi_protocol_handle *ph, u32 clk_id);
- int (*enable_atomic)(const struct scmi_protocol_handle *ph, u32 clk_id);
- int (*disable_atomic)(const struct scmi_protocol_handle *ph,
- u32 clk_id);
+ int (*enable)(const struct scmi_protocol_handle *ph, u32 clk_id,
+ bool atomic);
+ int (*disable)(const struct scmi_protocol_handle *ph, u32 clk_id,
+ bool atomic);
};
/**
--
2.42.0
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