linux-kernel - [PATCH v14 1/4] clk: qcom: branch: Add clk_branch2_prepare

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240507130531.3286999-2-quic_luoj@quicinc.com>
Date: Tue, 7 May 2024 21:05:28 +0800
From: Luo Jie <quic_luoj@...cinc.com>
To: <andersson@...nel.org>, <mturquette@...libre.com>, <sboyd@...nel.org>,
        <robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
        <p.zabel@...gutronix.de>
CC: <linux-arm-msm@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <quic_srichara@...cinc.com>
Subject: [PATCH v14 1/4] clk: qcom: branch: Add clk_branch2_prepare_ops

Add the clk_branch2_prepare_ops for supporting clock controller
where the hardware register is accessed by MDIO bus, and the
spin lock can't be used because of sleep during the MDIO
operation.

The clock is enabled by the .prepare instead of .enable when
the clk_branch2_prepare_ops is used.

Signed-off-by: Luo Jie <quic_luoj@...cinc.com>
Acked-by: Stephen Boyd <sboyd@...nel.org>
---
 drivers/clk/qcom/clk-branch.c | 7 +++++++
 drivers/clk/qcom/clk-branch.h | 1 +
 2 files changed, 8 insertions(+)

diff --git a/drivers/clk/qcom/clk-branch.c b/drivers/clk/qcom/clk-branch.c
index c1dba33ac31a..229480c5b075 100644
--- a/drivers/clk/qcom/clk-branch.c
+++ b/drivers/clk/qcom/clk-branch.c
@@ -191,3 +191,10 @@ const struct clk_ops clk_branch_simple_ops = {
 	.is_enabled = clk_is_enabled_regmap,
 };
 EXPORT_SYMBOL_GPL(clk_branch_simple_ops);
+
+const struct clk_ops clk_branch2_prepare_ops = {
+	.prepare = clk_branch2_enable,
+	.unprepare = clk_branch2_disable,
+	.is_prepared = clk_is_enabled_regmap,
+};
+EXPORT_SYMBOL_GPL(clk_branch2_prepare_ops);
diff --git a/drivers/clk/qcom/clk-branch.h b/drivers/clk/qcom/clk-branch.h
index f1b3b635ff32..292756435f53 100644
--- a/drivers/clk/qcom/clk-branch.h
+++ b/drivers/clk/qcom/clk-branch.h
@@ -109,6 +109,7 @@ extern const struct clk_ops clk_branch2_ops;
 extern const struct clk_ops clk_branch_simple_ops;
 extern const struct clk_ops clk_branch2_aon_ops;
 extern const struct clk_ops clk_branch2_mem_ops;
+extern const struct clk_ops clk_branch2_prepare_ops;
 
 #define to_clk_branch(_hw) \
 	container_of(to_clk_regmap(_hw), struct clk_branch, clkr)
-- 
2.34.1