linux-kernel - [PATCH v7 1/2] clk: qcom: branch: Add a helper for setting the enable bit

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Message-Id: <20240212-topic-clk_branch_en-v7-1-5b79eb7278b2@linaro.org>
Date: Mon, 12 Feb 2024 17:10:46 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>
Cc: Marijn Suijten <marijn.suijten@...ainline.org>, 
 linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Konrad Dybcio <konrad.dybcio@...aro.org>, 
 Johan Hovold <johan+linaro@...nel.org>, 
 Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Subject: [PATCH v7 1/2] clk: qcom: branch: Add a helper for setting the
 enable bit

We hardcode some clocks to be always-on, as they're essential to the
functioning of the SoC / some peripherals. Add a helper to do so
to make the writes less magic.

Reviewed-by: Johan Hovold <johan+linaro@...nel.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 drivers/clk/qcom/clk-branch.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/clk/qcom/clk-branch.h b/drivers/clk/qcom/clk-branch.h
index 8ffed603c050..f1b3b635ff32 100644
--- a/drivers/clk/qcom/clk-branch.h
+++ b/drivers/clk/qcom/clk-branch.h
@@ -64,6 +64,7 @@ struct clk_mem_branch {
 #define CBCR_FORCE_MEM_PERIPH_OFF	BIT(12)
 #define CBCR_WAKEUP			GENMASK(11, 8)
 #define CBCR_SLEEP			GENMASK(7, 4)
+#define CBCR_CLOCK_ENABLE		BIT(0)
 
 static inline void qcom_branch_set_force_mem_core(struct regmap *regmap,
 						  struct clk_branch clk, bool on)
@@ -98,6 +99,11 @@ static inline void qcom_branch_set_sleep(struct regmap *regmap, struct clk_branc
 			   FIELD_PREP(CBCR_SLEEP, val));
 }
 
+static inline void qcom_branch_set_clk_en(struct regmap *regmap, u32 cbcr)
+{
+	regmap_update_bits(regmap, cbcr, CBCR_CLOCK_ENABLE, CBCR_CLOCK_ENABLE);
+}
+
 extern const struct clk_ops clk_branch_ops;
 extern const struct clk_ops clk_branch2_ops;
 extern const struct clk_ops clk_branch_simple_ops;

-- 
2.43.1