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Message-Id: <20250811-clk-for-stephen-round-rate-v1-30-b3bf97b038dc@redhat.com>
Date: Mon, 11 Aug 2025 11:18:22 -0400
From: Brian Masney via B4 Relay <devnull+bmasney.redhat.com@...nel.org>
To: Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>, Sudeep Holla <sudeep.holla@....com>,
Cristian Marussi <cristian.marussi@....com>,
Chen Wang <unicorn_wang@...look.com>, Inochi Amaoto <inochiama@...il.com>,
Nicolas Ferre <nicolas.ferre@...rochip.com>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
Claudiu Beznea <claudiu.beznea@...on.dev>,
Paul Cercueil <paul@...pouillou.net>,
Keguang Zhang <keguang.zhang@...il.com>,
Taichi Sugaya <sugaya.taichi@...ionext.com>,
Takao Orito <orito.takao@...ionext.com>, Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Fabio Estevam <festevam@...il.com>, Jacky Huang <ychuang3@...oton.com>,
Shan-Chun Hung <schung@...oton.com>, Vladimir Zapolskiy <vz@...ia.com>,
Piotr Wojtaszczyk <piotr.wojtaszczyk@...esys.com>,
Paul Walmsley <paul.walmsley@...ive.com>,
Samuel Holland <samuel.holland@...ive.com>, Yixun Lan <dlan@...too.org>,
Steen Hegelund <Steen.Hegelund@...rochip.com>,
Daniel Machon <daniel.machon@...rochip.com>, UNGLinuxDriver@...rochip.com,
Orson Zhai <orsonzhai@...il.com>,
Baolin Wang <baolin.wang@...ux.alibaba.com>,
Chunyan Zhang <zhang.lyra@...il.com>,
Maxime Coquelin <mcoquelin.stm32@...il.com>,
Alexandre Torgue <alexandre.torgue@...s.st.com>,
Michal Simek <michal.simek@....com>, Maxime Ripard <mripard@...nel.org>,
Andreas Färber <afaerber@...e.de>,
Manivannan Sadhasivam <mani@...nel.org>, Sven Peter <sven@...nel.org>,
Janne Grunau <j@...nau.net>, Alyssa Rosenzweig <alyssa@...enzweig.io>,
Neal Gompa <neal@...pa.dev>, Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>,
Ray Jui <rjui@...adcom.com>, Scott Branden <sbranden@...adcom.com>,
Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
Max Filippov <jcmvbkbc@...il.com>,
Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
Daniel Palmer <daniel@...ngy.jp>, Romain Perier <romain.perier@...il.com>,
Andrew Lunn <andrew@...n.ch>, Gregory Clement <gregory.clement@...tlin.com>,
Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
Bjorn Andersson <andersson@...nel.org>,
Geert Uytterhoeven <geert+renesas@...der.be>,
Heiko Stuebner <heiko@...ech.de>,
Andrea della Porta <andrea.porta@...e.com>,
Krzysztof Kozlowski <krzk@...nel.org>,
Sylwester Nawrocki <s.nawrocki@...sung.com>,
Chanwoo Choi <cw00.choi@...sung.com>, Alim Akhtar <alim.akhtar@...sung.com>,
Qin Jian <qinjian@...lus1.com>, Viresh Kumar <vireshk@...nel.org>,
Ulf Hansson <ulf.hansson@...aro.org>,
Luca Ceresoli <luca.ceresoli@...tlin.com>,
Alex Helms <alexander.helms.jy@...esas.com>,
Linus Walleij <linus.walleij@...aro.org>, Liviu Dudau <liviu.dudau@....com>,
Lorenzo Pieralisi <lpieralisi@...nel.org>,
Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@...hiba.co.jp>
Cc: linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
arm-scmi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
sophgo@...ts.linux.dev, linux-mips@...r.kernel.org, imx@...ts.linux.dev,
linux-riscv@...ts.infradead.org, spacemit@...ts.linux.dev,
linux-stm32@...md-mailman.stormreply.com, patches@...nsource.cirrus.com,
linux-actions@...ts.infradead.org, asahi@...ts.linux.dev,
linux-mediatek@...ts.infradead.org, linux-arm-msm@...r.kernel.org,
linux-renesas-soc@...r.kernel.org, linux-rockchip@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org, soc@...ts.linux.dev,
Brian Masney <bmasney@...hat.com>
Subject: [PATCH 030/114] clk: mmp: frac: convert from round_rate() to
determine_rate()
From: Brian Masney <bmasney@...hat.com>
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/mmp/clk-frac.c | 27 ++++++++++++++-------------
1 file changed, 14 insertions(+), 13 deletions(-)
diff --git a/drivers/clk/mmp/clk-frac.c b/drivers/clk/mmp/clk-frac.c
index 6556f6ada2e830178b9525462f684bad683db454..0b1bb01346f0d7b450e85b805f6c84da6f803f56 100644
--- a/drivers/clk/mmp/clk-frac.c
+++ b/drivers/clk/mmp/clk-frac.c
@@ -21,8 +21,8 @@
#define to_clk_factor(hw) container_of(hw, struct mmp_clk_factor, hw)
-static long clk_factor_round_rate(struct clk_hw *hw, unsigned long drate,
- unsigned long *prate)
+static int clk_factor_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
struct mmp_clk_factor *factor = to_clk_factor(hw);
u64 rate = 0, prev_rate;
@@ -33,19 +33,20 @@ static long clk_factor_round_rate(struct clk_hw *hw, unsigned long drate,
d = &factor->ftbl[i];
prev_rate = rate;
- rate = (u64)(*prate) * d->denominator;
+ rate = (u64)(req->best_parent_rate) * d->denominator;
do_div(rate, d->numerator * factor->masks->factor);
- if (rate > drate)
+ if (rate > req->rate)
break;
}
- if ((i == 0) || (i == factor->ftbl_cnt)) {
- return rate;
- } else {
- if ((drate - prev_rate) > (rate - drate))
- return rate;
- else
- return prev_rate;
- }
+
+ if ((i == 0) || (i == factor->ftbl_cnt))
+ req->rate = rate;
+ else if ((req->rate - prev_rate) > (rate - req->rate))
+ req->rate = rate;
+ else
+ req->rate = prev_rate;
+
+ return 0;
}
static unsigned long clk_factor_recalc_rate(struct clk_hw *hw,
@@ -160,7 +161,7 @@ static int clk_factor_init(struct clk_hw *hw)
static const struct clk_ops clk_factor_ops = {
.recalc_rate = clk_factor_recalc_rate,
- .round_rate = clk_factor_round_rate,
+ .determine_rate = clk_factor_determine_rate,
.set_rate = clk_factor_set_rate,
.init = clk_factor_init,
};
--
2.50.1
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