linux-kernel - [PATCH v3 1/2] clk: ti: add of_ti_clk

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Message-Id: <20221106154612.3474940-1-dario.binacchi@amarulasolutions.com>
Date:   Sun,  6 Nov 2022 16:46:11 +0100
From:   Dario Binacchi <dario.binacchi@...rulasolutions.com>
To:     linux-kernel@...r.kernel.org
Cc:     michael@...rulasolutions.com,
        Amarula patchwork <linux-amarula@...rulasolutions.com>,
        Dario Binacchi <dario.binacchi@...rulasolutions.com>,
        Allison Randal <allison@...utok.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Liang He <windhl@....com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Tero Kristo <kristo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Tony Lindgren <tony@...mide.com>, linux-clk@...r.kernel.org,
        linux-omap@...r.kernel.org
Subject: [PATCH v3 1/2] clk: ti: add of_ti_clk_register() helper

The ti_clk_register() function is always called with the parameter of
type struct device set to NULL, since the functions from which it is
called always have a parameter of type struct device_node. Adding this
helper will allow you to register a TI clock to the common clock
framework by taking advantage of the facilities provided by the
struct device_node type.

Signed-off-by: Dario Binacchi <dario.binacchi@...rulasolutions.com>
---

(no changes since v1)

 drivers/clk/ti/clk.c   | 30 ++++++++++++++++++++++++++++++
 drivers/clk/ti/clock.h |  2 ++
 2 files changed, 32 insertions(+)

diff --git a/drivers/clk/ti/clk.c b/drivers/clk/ti/clk.c
index 1dc2f15fb75b..e29b5c7c0dc8 100644
--- a/drivers/clk/ti/clk.c
+++ b/drivers/clk/ti/clk.c
@@ -560,6 +560,36 @@ int ti_clk_add_alias(struct device *dev, struct clk *clk, const char *con)
 	return 0;
 }
 
+/**
+ * of_ti_clk_register - register a TI clock to the common clock framework
+ * @node: device node for the clock
+ * @hw: hardware clock handle
+ * @con: connection ID for this clock
+ *
+ * Registers a TI clock to the common clock framework, and adds a clock
+ * alias for it. Returns a handle to the registered clock if successful,
+ * ERR_PTR value in failure.
+ */
+struct clk *of_ti_clk_register(struct device_node *node, struct clk_hw *hw,
+			       const char *con)
+{
+	struct clk *clk;
+	int ret;
+
+	ret = of_clk_hw_register(node, hw);
+	if (ret)
+		return ERR_PTR(ret);
+
+	clk = hw->clk;
+	ret = ti_clk_add_alias(NULL, clk, con);
+	if (ret) {
+		clk_unregister(clk);
+		return ERR_PTR(ret);
+	}
+
+	return clk;
+}
+
 /**
  * ti_clk_register - register a TI clock to the common clock framework
  * @dev: device for this clock
diff --git a/drivers/clk/ti/clock.h b/drivers/clk/ti/clock.h
index 37ab53339a9b..a75fcf775de0 100644
--- a/drivers/clk/ti/clock.h
+++ b/drivers/clk/ti/clock.h
@@ -199,6 +199,8 @@ extern const struct omap_clkctrl_data dm816_clkctrl_data[];
 
 typedef void (*ti_of_clk_init_cb_t)(void *, struct device_node *);
 
+struct clk *of_ti_clk_register(struct device_node *node, struct clk_hw *hw,
+			       const char *con);
 struct clk *ti_clk_register(struct device *dev, struct clk_hw *hw,
 			    const char *con);
 struct clk *ti_clk_register_omap_hw(struct device *dev, struct clk_hw *hw,
-- 
2.32.0