linux-kernel - [PATCH 07/13] clk: imx: frac-pll: convert from round_rate() to determine

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Message-Id: <20250710-clk-imx-round-rate-v1-7-5726f98e6d8d@redhat.com>
Date: Thu, 10 Jul 2025 17:10:39 -0400
From: Brian Masney <bmasney@...hat.com>
To: Abel Vesa <abelvesa@...nel.org>, Peng Fan <peng.fan@....com>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Maxime Ripard <mripard@...nel.org>
Cc: linux-clk@...r.kernel.org, imx@...ts.linux.dev, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Brian Masney <bmasney@...hat.com>
Subject: [PATCH 07/13] clk: imx: frac-pll: convert from round_rate() to
 determine_rate()

The round_rate() clk ops is deprecated, so migrate this driver from
round_rate() to determine_rate() using the Coccinelle semantic patch
on the cover letter of this series.

Signed-off-by: Brian Masney <bmasney@...hat.com>
---
 drivers/clk/imx/clk-frac-pll.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/drivers/clk/imx/clk-frac-pll.c b/drivers/clk/imx/clk-frac-pll.c
index c703056fae85cca492b2edcfaadab58fd13c6b5a..eb668faaa38fd085f90bd1c01811e0deba5d0102 100644
--- a/drivers/clk/imx/clk-frac-pll.c
+++ b/drivers/clk/imx/clk-frac-pll.c
@@ -119,19 +119,19 @@ static unsigned long clk_pll_recalc_rate(struct clk_hw *hw,
 	return rate;
 }
 
-static long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
-			       unsigned long *prate)
+static int clk_pll_determine_rate(struct clk_hw *hw,
+				  struct clk_rate_request *req)
 {
-	u64 parent_rate = *prate;
+	u64 parent_rate = req->best_parent_rate;
 	u32 divff, divfi;
 	u64 temp64;
 
 	parent_rate *= 8;
-	rate *= 2;
-	temp64 = rate;
+	req->rate *= 2;
+	temp64 = req->rate;
 	do_div(temp64, parent_rate);
 	divfi = temp64;
-	temp64 = rate - divfi * parent_rate;
+	temp64 = req->rate - divfi * parent_rate;
 	temp64 *= PLL_FRAC_DENOM;
 	do_div(temp64, parent_rate);
 	divff = temp64;
@@ -140,9 +140,11 @@ static long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
 	temp64 *= divff;
 	do_div(temp64, PLL_FRAC_DENOM);
 
-	rate = parent_rate * divfi + temp64;
+	req->rate = parent_rate * divfi + temp64;
+
+	req->rate = req->rate / 2;
 
-	return rate / 2;
+	return 0;
 }
 
 /*
@@ -198,7 +200,7 @@ static const struct clk_ops clk_frac_pll_ops = {
 	.unprepare	= clk_pll_unprepare,
 	.is_prepared	= clk_pll_is_prepared,
 	.recalc_rate	= clk_pll_recalc_rate,
-	.round_rate	= clk_pll_round_rate,
+	.determine_rate = clk_pll_determine_rate,
 	.set_rate	= clk_pll_set_rate,
 };
 

-- 
2.50.0