linux-kernel - [PATCH v2 17/32] clk: at91: clk-smd: add support for clk_parent

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Message-ID: <eb2e47406ea37adeb119aa1e3702b1c175c472f5.1750182562.git.Ryan.Wanner@microchip.com>
Date: Tue, 24 Jun 2025 08:08:14 -0700
From: <Ryan.Wanner@...rochip.com>
To: <mturquette@...libre.com>, <sboyd@...nel.org>,
	<nicolas.ferre@...rochip.com>, <alexandre.belloni@...tlin.com>,
	<claudiu.beznea@...on.dev>
CC: <robh@...nel.org>, <linux-clk@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
	<varshini.rajendran@...rochip.com>
Subject: [PATCH v2 17/32] clk: at91: clk-smd: add support for clk_parent_data

From: Claudiu Beznea <claudiu.beznea@...on.dev>

Add support for parent_hw in smd clock drivers.
With this parent-child relation is described with pointers rather
than strings making registration a bit faster.

All the SoC based drivers that rely on clk-smd were adapted
to the new API change. The switch itself for SoCs will be done
in subsequent patches.

Signed-off-by: Claudiu Beznea <claudiu.beznea@...on.dev>
[ryan.wanner@...rochip.com: Remove SoC specific changes as they are
going to be coalesced into one SoC specific commit.]
Signed-off-by: Ryan Wanner <Ryan.Wanner@...rochip.com>
---
 drivers/clk/at91/clk-smd.c   | 10 +++++++---
 drivers/clk/at91/dt-compat.c |  2 +-
 drivers/clk/at91/pmc.h       |  3 ++-
 3 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/clk/at91/clk-smd.c b/drivers/clk/at91/clk-smd.c
index 09c649c8598e..d53dc32b36be 100644
--- a/drivers/clk/at91/clk-smd.c
+++ b/drivers/clk/at91/clk-smd.c
@@ -111,11 +111,12 @@ static const struct clk_ops at91sam9x5_smd_ops = {
 
 struct clk_hw * __init
 at91sam9x5_clk_register_smd(struct regmap *regmap, const char *name,
-			    const char **parent_names, u8 num_parents)
+			    const char **parent_names, struct clk_parent_data *parent_data,
+			    u8 num_parents)
 {
 	struct at91sam9x5_clk_smd *smd;
 	struct clk_hw *hw;
-	struct clk_init_data init;
+	struct clk_init_data init = {};
 	int ret;
 
 	smd = kzalloc(sizeof(*smd), GFP_KERNEL);
@@ -124,7 +125,10 @@ at91sam9x5_clk_register_smd(struct regmap *regmap, const char *name,
 
 	init.name = name;
 	init.ops = &at91sam9x5_smd_ops;
-	init.parent_names = parent_names;
+	if (parent_data)
+		init.parent_data = (const struct clk_parent_data *)parent_data;
+	else
+		init.parent_names = parent_names;
 	init.num_parents = num_parents;
 	init.flags = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE;
 
diff --git a/drivers/clk/at91/dt-compat.c b/drivers/clk/at91/dt-compat.c
index 2b1aa834f111..5afd7c9f53fd 100644
--- a/drivers/clk/at91/dt-compat.c
+++ b/drivers/clk/at91/dt-compat.c
@@ -859,7 +859,7 @@ static void __init of_at91sam9x5_clk_smd_setup(struct device_node *np)
 	if (IS_ERR(regmap))
 		return;
 
-	hw = at91sam9x5_clk_register_smd(regmap, name, parent_names,
+	hw = at91sam9x5_clk_register_smd(regmap, name, parent_names, NULL,
 					 num_parents);
 	if (IS_ERR(hw))
 		return;
diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h
index a380054d580d..e5ab2fb3bc89 100644
--- a/drivers/clk/at91/pmc.h
+++ b/drivers/clk/at91/pmc.h
@@ -277,7 +277,8 @@ at91_clk_register_sam9260_slow(struct regmap *regmap,
 
 struct clk_hw * __init
 at91sam9x5_clk_register_smd(struct regmap *regmap, const char *name,
-			    const char **parent_names, u8 num_parents);
+			    const char **parent_names, struct clk_parent_data *parent_data,
+			    u8 num_parents);
 
 struct clk_hw * __init
 at91_clk_register_system(struct regmap *regmap, const char *name,
-- 
2.43.0