| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20250811-clk-for-stephen-round-rate-v1-61-b3bf97b038dc@redhat.com>
Date: Mon, 11 Aug 2025 11:18:53 -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 061/114] clk: versaclock3: 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/clk-versaclock3.c | 70 +++++++++++++++++++++++++------------------
1 file changed, 41 insertions(+), 29 deletions(-)
diff --git a/drivers/clk/clk-versaclock3.c b/drivers/clk/clk-versaclock3.c
index 9fe27dace1117aa9e2f29be76744cdefceea3de3..1849863dbd673f3b133b9a295dc608ea43931de6 100644
--- a/drivers/clk/clk-versaclock3.c
+++ b/drivers/clk/clk-versaclock3.c
@@ -289,22 +289,25 @@ static unsigned long vc3_pfd_recalc_rate(struct clk_hw *hw,
return rate;
}
-static long vc3_pfd_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *parent_rate)
+static int vc3_pfd_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
struct vc3_hw_data *vc3 = container_of(hw, struct vc3_hw_data, hw);
const struct vc3_pfd_data *pfd = vc3->data;
unsigned long idiv;
/* PLL cannot operate with input clock above 50 MHz. */
- if (rate > 50000000)
+ if (req->rate > 50000000)
return -EINVAL;
/* CLKIN within range of PLL input, feed directly to PLL. */
- if (*parent_rate <= 50000000)
- return *parent_rate;
+ if (req->best_parent_rate <= 50000000) {
+ req->rate = req->best_parent_rate;
- idiv = DIV_ROUND_UP(*parent_rate, rate);
+ return 0;
+ }
+
+ idiv = DIV_ROUND_UP(req->best_parent_rate, req->rate);
if (pfd->num == VC3_PFD1 || pfd->num == VC3_PFD3) {
if (idiv > 63)
return -EINVAL;
@@ -313,7 +316,9 @@ static long vc3_pfd_round_rate(struct clk_hw *hw, unsigned long rate,
return -EINVAL;
}
- return *parent_rate / idiv;
+ req->rate = req->best_parent_rate / idiv;
+
+ return 0;
}
static int vc3_pfd_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -354,7 +359,7 @@ static int vc3_pfd_set_rate(struct clk_hw *hw, unsigned long rate,
static const struct clk_ops vc3_pfd_ops = {
.recalc_rate = vc3_pfd_recalc_rate,
- .round_rate = vc3_pfd_round_rate,
+ .determine_rate = vc3_pfd_determine_rate,
.set_rate = vc3_pfd_set_rate,
};
@@ -385,36 +390,38 @@ static unsigned long vc3_pll_recalc_rate(struct clk_hw *hw,
return rate;
}
-static long vc3_pll_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *parent_rate)
+static int vc3_pll_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
struct vc3_hw_data *vc3 = container_of(hw, struct vc3_hw_data, hw);
const struct vc3_pll_data *pll = vc3->data;
u64 div_frc;
- if (rate < pll->vco.min)
- rate = pll->vco.min;
- if (rate > pll->vco.max)
- rate = pll->vco.max;
+ if (req->rate < pll->vco.min)
+ req->rate = pll->vco.min;
+ if (req->rate > pll->vco.max)
+ req->rate = pll->vco.max;
- vc3->div_int = rate / *parent_rate;
+ vc3->div_int = req->rate / req->best_parent_rate;
if (pll->num == VC3_PLL2) {
if (vc3->div_int > 0x7ff)
- rate = *parent_rate * 0x7ff;
+ req->rate = req->best_parent_rate * 0x7ff;
/* Determine best fractional part, which is 16 bit wide */
- div_frc = rate % *parent_rate;
+ div_frc = req->rate % req->best_parent_rate;
div_frc *= BIT(16) - 1;
- vc3->div_frc = min_t(u64, div64_ul(div_frc, *parent_rate), U16_MAX);
- rate = (*parent_rate *
- (vc3->div_int * VC3_2_POW_16 + vc3->div_frc) / VC3_2_POW_16);
+ vc3->div_frc = min_t(u64,
+ div64_ul(div_frc, req->best_parent_rate),
+ U16_MAX);
+ req->rate = (req->best_parent_rate *
+ (vc3->div_int * VC3_2_POW_16 + vc3->div_frc) / VC3_2_POW_16);
} else {
- rate = *parent_rate * vc3->div_int;
+ req->rate = req->best_parent_rate * vc3->div_int;
}
- return rate;
+ return 0;
}
static int vc3_pll_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -441,7 +448,7 @@ static int vc3_pll_set_rate(struct clk_hw *hw, unsigned long rate,
static const struct clk_ops vc3_pll_ops = {
.recalc_rate = vc3_pll_recalc_rate,
- .round_rate = vc3_pll_round_rate,
+ .determine_rate = vc3_pll_determine_rate,
.set_rate = vc3_pll_set_rate,
};
@@ -498,8 +505,8 @@ static unsigned long vc3_div_recalc_rate(struct clk_hw *hw,
div_data->flags, div_data->width);
}
-static long vc3_div_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *parent_rate)
+static int vc3_div_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
struct vc3_hw_data *vc3 = container_of(hw, struct vc3_hw_data, hw);
const struct vc3_div_data *div_data = vc3->data;
@@ -511,11 +518,16 @@ static long vc3_div_round_rate(struct clk_hw *hw, unsigned long rate,
bestdiv >>= div_data->shift;
bestdiv &= VC3_DIV_MASK(div_data->width);
bestdiv = vc3_get_div(div_data->table, bestdiv, div_data->flags);
- return DIV_ROUND_UP(*parent_rate, bestdiv);
+ req->rate = DIV_ROUND_UP(req->best_parent_rate, bestdiv);
+
+ return 0;
}
- return divider_round_rate(hw, rate, parent_rate, div_data->table,
- div_data->width, div_data->flags);
+ req->rate = divider_round_rate(hw, req->rate, &req->best_parent_rate,
+ div_data->table,
+ div_data->width, div_data->flags);
+
+ return 0;
}
static int vc3_div_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -534,7 +546,7 @@ static int vc3_div_set_rate(struct clk_hw *hw, unsigned long rate,
static const struct clk_ops vc3_div_ops = {
.recalc_rate = vc3_div_recalc_rate,
- .round_rate = vc3_div_round_rate,
+ .determine_rate = vc3_div_determine_rate,
.set_rate = vc3_div_set_rate,
};
--
2.50.1
Powered by blists - more mailing lists