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From:   Claudiu Beznea <claudiu.beznea@tuxon.dev>
To:     mturquette@baylibre.com, sboyd@kernel.org,
        nicolas.ferre@microchip.com, alexandre.belloni@bootlin.com,
        mripard@kernel.org
Cc:     linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org, varshini.rajendran@microchip.com,
        Claudiu Beznea <claudiu.beznea@tuxon.dev>
Subject: [PATCH 05/42] clk: at91: clk-pll: add support for parent_hw
Date:   Thu, 27 Jul 2023 08:31:19 +0300
Message-Id: <20230727053156.13587-6-claudiu.beznea@tuxon.dev>
In-Reply-To: <20230727053156.13587-1-claudiu.beznea@tuxon.dev>
References: <20230727053156.13587-1-claudiu.beznea@tuxon.dev>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Add support for parent_hw in pll clock driver. 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-pll 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@tuxon.dev>
---
 drivers/clk/at91/at91rm9200.c  | 4 ++--
 drivers/clk/at91/at91sam9260.c | 4 ++--
 drivers/clk/at91/at91sam9g45.c | 2 +-
 drivers/clk/at91/at91sam9n12.c | 4 ++--
 drivers/clk/at91/at91sam9rl.c  | 2 +-
 drivers/clk/at91/at91sam9x5.c  | 2 +-
 drivers/clk/at91/clk-pll.c     | 9 ++++++---
 drivers/clk/at91/dt-compat.c   | 2 +-
 drivers/clk/at91/pmc.h         | 2 +-
 drivers/clk/at91/sama5d2.c     | 2 +-
 drivers/clk/at91/sama5d3.c     | 2 +-
 drivers/clk/at91/sama5d4.c     | 2 +-
 12 files changed, 20 insertions(+), 17 deletions(-)

diff --git a/drivers/clk/at91/at91rm9200.c b/drivers/clk/at91/at91rm9200.c
index e5a034f208d8..623e232ec9c6 100644
--- a/drivers/clk/at91/at91rm9200.c
+++ b/drivers/clk/at91/at91rm9200.c
@@ -119,7 +119,7 @@ static void __init at91rm9200_pmc_setup(struct device_node *np)
 
 	at91rm9200_pmc->chws[PMC_MAIN] = hw;
 
-	hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
+	hw = at91_clk_register_pll(regmap, "pllack", "mainck", NULL, 0,
 				   &at91rm9200_pll_layout,
 				   &rm9200_pll_characteristics);
 	if (IS_ERR(hw))
@@ -127,7 +127,7 @@ static void __init at91rm9200_pmc_setup(struct device_node *np)
 
 	at91rm9200_pmc->chws[PMC_PLLACK] = hw;
 
-	hw = at91_clk_register_pll(regmap, "pllbck", "mainck", 1,
+	hw = at91_clk_register_pll(regmap, "pllbck", "mainck", NULL, 1,
 				   &at91rm9200_pll_layout,
 				   &rm9200_pll_characteristics);
 	if (IS_ERR(hw))
diff --git a/drivers/clk/at91/at91sam9260.c b/drivers/clk/at91/at91sam9260.c
index ae6f126f204a..f39deb3ec00a 100644
--- a/drivers/clk/at91/at91sam9260.c
+++ b/drivers/clk/at91/at91sam9260.c
@@ -395,7 +395,7 @@ static void __init at91sam926x_pmc_setup(struct device_node *np,
 		slck_name = slowxtal_name;
 	}
 
-	hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
+	hw = at91_clk_register_pll(regmap, "pllack", "mainck", NULL, 0,
 				   data->plla_layout,
 				   data->plla_characteristics);
 	if (IS_ERR(hw))
@@ -403,7 +403,7 @@ static void __init at91sam926x_pmc_setup(struct device_node *np,
 
 	at91sam9260_pmc->chws[PMC_PLLACK] = hw;
 
-	hw = at91_clk_register_pll(regmap, "pllbck", "mainck", 1,
+	hw = at91_clk_register_pll(regmap, "pllbck", "mainck", NULL, 1,
 				   data->pllb_layout,
 				   data->pllb_characteristics);
 	if (IS_ERR(hw))
diff --git a/drivers/clk/at91/at91sam9g45.c b/drivers/clk/at91/at91sam9g45.c
index 684d2bcb36e8..3436a09a6e8a 100644
--- a/drivers/clk/at91/at91sam9g45.c
+++ b/drivers/clk/at91/at91sam9g45.c
@@ -134,7 +134,7 @@ static void __init at91sam9g45_pmc_setup(struct device_node *np)
 
 	at91sam9g45_pmc->chws[PMC_MAIN] = hw;
 
-	hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
+	hw = at91_clk_register_pll(regmap, "pllack", "mainck", NULL, 0,
 				   &at91rm9200_pll_layout, &plla_characteristics);
 	if (IS_ERR(hw))
 		goto err_free;
diff --git a/drivers/clk/at91/at91sam9n12.c b/drivers/clk/at91/at91sam9n12.c
index 9fc20b177b13..80ccd4a49df3 100644
--- a/drivers/clk/at91/at91sam9n12.c
+++ b/drivers/clk/at91/at91sam9n12.c
@@ -160,7 +160,7 @@ static void __init at91sam9n12_pmc_setup(struct device_node *np)
 
 	at91sam9n12_pmc->chws[PMC_MAIN] = hw;
 
-	hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
+	hw = at91_clk_register_pll(regmap, "pllack", "mainck", NULL, 0,
 				   &at91rm9200_pll_layout, &plla_characteristics);
 	if (IS_ERR(hw))
 		goto err_free;
@@ -171,7 +171,7 @@ static void __init at91sam9n12_pmc_setup(struct device_node *np)
 
 	at91sam9n12_pmc->chws[PMC_PLLACK] = hw;
 
-	hw = at91_clk_register_pll(regmap, "pllbck", "mainck", 1,
+	hw = at91_clk_register_pll(regmap, "pllbck", "mainck", NULL, 1,
 				   &at91rm9200_pll_layout, &pllb_characteristics);
 	if (IS_ERR(hw))
 		goto err_free;
diff --git a/drivers/clk/at91/at91sam9rl.c b/drivers/clk/at91/at91sam9rl.c
index 969f809e7d65..0e8657aac491 100644
--- a/drivers/clk/at91/at91sam9rl.c
+++ b/drivers/clk/at91/at91sam9rl.c
@@ -101,7 +101,7 @@ static void __init at91sam9rl_pmc_setup(struct device_node *np)
 
 	at91sam9rl_pmc->chws[PMC_MAIN] = hw;
 
-	hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
+	hw = at91_clk_register_pll(regmap, "pllack", "mainck", NULL, 0,
 				   &at91rm9200_pll_layout,
 				   &sam9rl_plla_characteristics);
 	if (IS_ERR(hw))
diff --git a/drivers/clk/at91/at91sam9x5.c b/drivers/clk/at91/at91sam9x5.c
index 5728cfb9036f..6b8c755fefdf 100644
--- a/drivers/clk/at91/at91sam9x5.c
+++ b/drivers/clk/at91/at91sam9x5.c
@@ -182,7 +182,7 @@ static void __init at91sam9x5_pmc_setup(struct device_node *np,
 
 	at91sam9x5_pmc->chws[PMC_MAIN] = hw;
 
-	hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
+	hw = at91_clk_register_pll(regmap, "pllack", "mainck", NULL, 0,
 				   &at91rm9200_pll_layout, &plla_characteristics);
 	if (IS_ERR(hw))
 		goto err_free;
diff --git a/drivers/clk/at91/clk-pll.c b/drivers/clk/at91/clk-pll.c
index 249d6a53cedf..afd48cbaa6db 100644
--- a/drivers/clk/at91/clk-pll.c
+++ b/drivers/clk/at91/clk-pll.c
@@ -310,13 +310,13 @@ static const struct clk_ops pll_ops = {
 
 struct clk_hw * __init
 at91_clk_register_pll(struct regmap *regmap, const char *name,
-		      const char *parent_name, u8 id,
+		      const char *parent_name, struct clk_hw *parent_hw, u8 id,
 		      const struct clk_pll_layout *layout,
 		      const struct clk_pll_characteristics *characteristics)
 {
 	struct clk_pll *pll;
 	struct clk_hw *hw;
-	struct clk_init_data init;
+	struct clk_init_data init = {};
 	int offset = PLL_REG(id);
 	unsigned int pllr;
 	int ret;
@@ -330,7 +330,10 @@ at91_clk_register_pll(struct regmap *regmap, const char *name,
 
 	init.name = name;
 	init.ops = &pll_ops;
-	init.parent_names = &parent_name;
+	if (parent_hw)
+		init.parent_hws = (const struct clk_hw **)&parent_hw;
+	else
+		init.parent_names = &parent_name;
 	init.num_parents = 1;
 	init.flags = CLK_SET_RATE_GATE;
 
diff --git a/drivers/clk/at91/dt-compat.c b/drivers/clk/at91/dt-compat.c
index ead99948375b..d8e520e509d8 100644
--- a/drivers/clk/at91/dt-compat.c
+++ b/drivers/clk/at91/dt-compat.c
@@ -664,7 +664,7 @@ of_at91_clk_pll_setup(struct device_node *np,
 	if (!characteristics)
 		return;
 
-	hw = at91_clk_register_pll(regmap, name, parent_name, id, layout,
+	hw = at91_clk_register_pll(regmap, name, parent_name, NULL, id, layout,
 				   characteristics);
 	if (IS_ERR(hw))
 		goto out_free_characteristics;
diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h
index 515a3c5595b7..ce68c1b1fb70 100644
--- a/drivers/clk/at91/pmc.h
+++ b/drivers/clk/at91/pmc.h
@@ -211,7 +211,7 @@ at91_clk_register_sam9x5_peripheral(struct regmap *regmap, spinlock_t *lock,
 
 struct clk_hw * __init
 at91_clk_register_pll(struct regmap *regmap, const char *name,
-		      const char *parent_name, u8 id,
+		      const char *parent_name, struct clk_hw *parent_hw, u8 id,
 		      const struct clk_pll_layout *layout,
 		      const struct clk_pll_characteristics *characteristics);
 struct clk_hw * __init
diff --git a/drivers/clk/at91/sama5d2.c b/drivers/clk/at91/sama5d2.c
index 8bbc34e22cda..bc62b9ed4ea0 100644
--- a/drivers/clk/at91/sama5d2.c
+++ b/drivers/clk/at91/sama5d2.c
@@ -215,7 +215,7 @@ static void __init sama5d2_pmc_setup(struct device_node *np)
 
 	sama5d2_pmc->chws[PMC_MAIN] = hw;
 
-	hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
+	hw = at91_clk_register_pll(regmap, "pllack", "mainck", NULL, 0,
 				   &sama5d3_pll_layout, &plla_characteristics);
 	if (IS_ERR(hw))
 		goto err_free;
diff --git a/drivers/clk/at91/sama5d3.c b/drivers/clk/at91/sama5d3.c
index 05d0cdd22bc4..9d86c350a1e7 100644
--- a/drivers/clk/at91/sama5d3.c
+++ b/drivers/clk/at91/sama5d3.c
@@ -161,7 +161,7 @@ static void __init sama5d3_pmc_setup(struct device_node *np)
 	if (IS_ERR(hw))
 		goto err_free;
 
-	hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
+	hw = at91_clk_register_pll(regmap, "pllack", "mainck", NULL, 0,
 				   &sama5d3_pll_layout, &plla_characteristics);
 	if (IS_ERR(hw))
 		goto err_free;
diff --git a/drivers/clk/at91/sama5d4.c b/drivers/clk/at91/sama5d4.c
index da84b4cef827..8491b1e0391d 100644
--- a/drivers/clk/at91/sama5d4.c
+++ b/drivers/clk/at91/sama5d4.c
@@ -176,7 +176,7 @@ static void __init sama5d4_pmc_setup(struct device_node *np)
 	if (IS_ERR(hw))
 		goto err_free;
 
-	hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
+	hw = at91_clk_register_pll(regmap, "pllack", "mainck", NULL, 0,
 				   &sama5d3_pll_layout, &plla_characteristics);
 	if (IS_ERR(hw))
 		goto err_free;
-- 
2.39.2