linux-kernel - [PATCH v6 10/18] clk: imx: add hw API imx8m_anatop_get_clk

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Message-ID: <20241222170534.3621453-11-dario.binacchi@amarulasolutions.com>
Date: Sun, 22 Dec 2024 18:04:25 +0100
From: Dario Binacchi <dario.binacchi@...rulasolutions.com>
To: linux-kernel@...r.kernel.org
Cc: linux-amarula@...rulasolutions.com,
	Dario Binacchi <dario.binacchi@...rulasolutions.com>,
	Abel Vesa <abelvesa@...nel.org>,
	Fabio Estevam <festevam@...il.com>,
	Michael Turquette <mturquette@...libre.com>,
	Peng Fan <peng.fan@....com>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Shawn Guo <shawnguo@...nel.org>,
	Stephen Boyd <sboyd@...nel.org>,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-clk@...r.kernel.org
Subject: [PATCH v6 10/18] clk: imx: add hw API imx8m_anatop_get_clk_hw

Get the hw of a clock registered by the anatop module. This function is
preparatory for future developments.

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

---

(no changes since v5)

Changes in v5:
- Consider CONFIG_CLK_IMX8M{M,N,P,Q}_MODULE to fix compilation errors

Changes in v4:
- New

 drivers/clk/imx/clk.c | 28 ++++++++++++++++++++++++++++
 drivers/clk/imx/clk.h |  7 +++++++
 2 files changed, 35 insertions(+)

diff --git a/drivers/clk/imx/clk.c b/drivers/clk/imx/clk.c
index df83bd939492..9a21f233e105 100644
--- a/drivers/clk/imx/clk.c
+++ b/drivers/clk/imx/clk.c
@@ -128,6 +128,34 @@ struct clk_hw *imx_get_clk_hw_by_name(struct device_node *np, const char *name)
 }
 EXPORT_SYMBOL_GPL(imx_get_clk_hw_by_name);
 
+#if defined(CONFIG_CLK_IMX8MM) || defined(CONFIG_CLK_IMX8MM_MODULE) || \
+	defined(CONFIG_CLK_IMX8MN) || defined(CONFIG_CLK_IMX8MN_MODULE) || \
+	defined(CONFIG_CLK_IMX8MP) || defined(CONFIG_CLK_IMX8MP_MODULE) || \
+	defined(CONFIG_CLK_IMX8MQ) || defined(CONFIG_CLK_IMX8MQ_MODULE)
+struct clk_hw *imx8m_anatop_get_clk_hw(int id)
+{
+#if defined(CONFIG_CLK_IMX8MQ) || defined(CONFIG_CLK_IMX8MQ_MODULE)
+	const char *compatible = "fsl,imx8mq-anatop";
+#else
+	const char *compatible = "fsl,imx8mm-anatop";
+#endif
+	struct device_node *np;
+	struct of_phandle_args args;
+	struct clk_hw *hw;
+
+	np = of_find_compatible_node(NULL, NULL, compatible);
+	args.np = np;
+	args.args_count = 1;
+	args.args[0] = id;
+	of_node_put(np);
+
+	hw = __clk_get_hw(of_clk_get_from_provider(&args));
+	pr_debug("%s: got clk: %s\n", __func__, clk_hw_get_name(hw));
+	return hw;
+}
+EXPORT_SYMBOL_GPL(imx8m_anatop_get_clk_hw);
+#endif
+
 /*
  * This fixups the register CCM_CSCMR1 write value.
  * The write/read/divider values of the aclk_podf field
diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h
index aa5202f284f3..52055fda3058 100644
--- a/drivers/clk/imx/clk.h
+++ b/drivers/clk/imx/clk.h
@@ -487,4 +487,11 @@ struct clk_hw *imx_clk_gpr_mux(const char *name, const char *compatible,
 			       u32 reg, const char **parent_names,
 			       u8 num_parents, const u32 *mux_table, u32 mask);
 
+#if defined(CONFIG_CLK_IMX8MM) || defined(CONFIG_CLK_IMX8MM_MODULE) || \
+	defined(CONFIG_CLK_IMX8MN) || defined(CONFIG_CLK_IMX8MN_MODULE) || \
+	defined(CONFIG_CLK_IMX8MP) || defined(CONFIG_CLK_IMX8MP_MODULE) || \
+	defined(CONFIG_CLK_IMX8MQ) || defined(CONFIG_CLK_IMX8MQ_MODULE)
+struct clk_hw *imx8m_anatop_get_clk_hw(int id);
+#endif
+
 #endif
-- 
2.43.0