diff mbox series

[v5.10.y-cip,v2,03/16] clk: gate: Add devm_clk_hw_register_gate()

Message ID 20250124090041.1401132-4-claudiu.beznea.uj@bp.renesas.com (mailing list archive)
State Accepted, archived
Delegated to: Nobuhiro Iwamatsu
Headers show
Series renesas: rzg3s: backport the RTC support | expand

Commit Message

Claudiu Beznea Jan. 24, 2025, 9 a.m. UTC
From: Horatiu Vultur <horatiu.vultur@microchip.com>

commit 815f0e738a8d5663a02350e2580706829144a722 upstream.

Add devm_clk_hw_register_gate() - devres-managed version of
clk_hw_register_gate()

Suggested-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20211103085102.1656081-2-horatiu.vultur@microchip.com
Reviewed-by: Pavel Machek <pavel@denx.de>
[claudiu.beznea: fixed conflict]
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---
 drivers/clk/clk-gate.c       | 35 +++++++++++++++++++++++++++++++++++
 include/linux/clk-provider.h | 23 +++++++++++++++++++++++
 2 files changed, 58 insertions(+)
diff mbox series

Patch

diff --git a/drivers/clk/clk-gate.c b/drivers/clk/clk-gate.c
index 070dc47e95a1..64283807600b 100644
--- a/drivers/clk/clk-gate.c
+++ b/drivers/clk/clk-gate.c
@@ -7,6 +7,7 @@ 
  */
 
 #include <linux/clk-provider.h>
+#include <linux/device.h>
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/io.h>
@@ -222,3 +223,37 @@  void clk_hw_unregister_gate(struct clk_hw *hw)
 	kfree(gate);
 }
 EXPORT_SYMBOL_GPL(clk_hw_unregister_gate);
+
+static void devm_clk_hw_release_gate(struct device *dev, void *res)
+{
+	clk_hw_unregister_gate(*(struct clk_hw **)res);
+}
+
+struct clk_hw *__devm_clk_hw_register_gate(struct device *dev,
+		struct device_node *np, const char *name,
+		const char *parent_name, const struct clk_hw *parent_hw,
+		const struct clk_parent_data *parent_data,
+		unsigned long flags,
+		void __iomem *reg, u8 bit_idx,
+		u8 clk_gate_flags, spinlock_t *lock)
+{
+	struct clk_hw **ptr, *hw;
+
+	ptr = devres_alloc(devm_clk_hw_release_gate, sizeof(*ptr), GFP_KERNEL);
+	if (!ptr)
+		return ERR_PTR(-ENOMEM);
+
+	hw = __clk_hw_register_gate(dev, np, name, parent_name, parent_hw,
+				    parent_data, flags, reg, bit_idx,
+				    clk_gate_flags, lock);
+
+	if (!IS_ERR(hw)) {
+		*ptr = hw;
+		devres_add(dev, ptr);
+	} else {
+		devres_free(ptr);
+	}
+
+	return hw;
+}
+EXPORT_SYMBOL_GPL(__devm_clk_hw_register_gate);
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index b13ab221d653..0e41b029f898 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -517,6 +517,13 @@  struct clk_hw *__clk_hw_register_gate(struct device *dev,
 		unsigned long flags,
 		void __iomem *reg, u8 bit_idx,
 		u8 clk_gate_flags, spinlock_t *lock);
+struct clk_hw *__devm_clk_hw_register_gate(struct device *dev,
+		struct device_node *np, const char *name,
+		const char *parent_name, const struct clk_hw *parent_hw,
+		const struct clk_parent_data *parent_data,
+		unsigned long flags,
+		void __iomem *reg, u8 bit_idx,
+		u8 clk_gate_flags, spinlock_t *lock);
 struct clk *clk_register_gate(struct device *dev, const char *name,
 		const char *parent_name, unsigned long flags,
 		void __iomem *reg, u8 bit_idx,
@@ -589,6 +596,22 @@  struct clk *clk_register_gate(struct device *dev, const char *name,
 	__devm_clk_hw_register_gate((dev), NULL, (name), NULL, NULL,	      \
 				    (parent_data), (flags), (reg), (bit_idx), \
 				    (clk_gate_flags), (lock))
+/*
+ * devm_clk_hw_register_gate - register a gate clock with the clock framework
+ * @dev: device that is registering this clock
+ * @name: name of this clock
+ * @parent_name: name of this clock's parent
+ * @flags: framework-specific flags for this clock
+ * @reg: register address to control gating of this clock
+ * @bit_idx: which bit in the register controls gating of this clock
+ * @clk_gate_flags: gate-specific flags for this clock
+ * @lock: shared register lock for this clock
+ */
+#define devm_clk_hw_register_gate(dev, name, parent_name, flags, reg, bit_idx,\
+				  clk_gate_flags, lock)			      \
+	__devm_clk_hw_register_gate((dev), NULL, (name), (parent_name), NULL, \
+			       NULL, (flags), (reg), (bit_idx),		      \
+			       (clk_gate_flags), (lock))
 
 void clk_unregister_gate(struct clk *clk);
 void clk_hw_unregister_gate(struct clk_hw *hw);