From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
linux-iio@vger.kernel.org, chrome-platform@lists.linux.dev,
linux-kernel@vger.kernel.org, linux-media@vger.kernel.org
Cc: "Jonathan Cameron" <jic23@kernel.org>,
"David Lechner" <dlechner@baylibre.com>,
"Nuno Sá" <nuno.sa@analog.com>,
"Andy Shevchenko" <andy@kernel.org>,
"Benson Leung" <bleung@chromium.org>,
"Guenter Roeck" <groeck@chromium.org>,
"Lars-Peter Clausen" <lars@metafoo.de>,
"Michael Hennerich" <Michael.Hennerich@analog.com>,
"Mauro Carvalho Chehab" <mchehab@kernel.org>,
"Daniel W. S. Almeida" <dwlsalmeida@gmail.com>
Subject: [PATCH v1 3/6] media: dvb-frontends: atbm8830: Convert to use PI definition
Date: Mon, 27 Oct 2025 15:34:52 +0100 [thread overview]
Message-ID: <20251027143850.2070427-4-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20251027143850.2070427-1-andriy.shevchenko@linux.intel.com>
Convert to use PI definition instead of open coded value of it.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/media/dvb-frontends/atbm8830.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/dvb-frontends/atbm8830.c b/drivers/media/dvb-frontends/atbm8830.c
index 778c865085bf..74032364d183 100644
--- a/drivers/media/dvb-frontends/atbm8830.c
+++ b/drivers/media/dvb-frontends/atbm8830.c
@@ -6,7 +6,8 @@
* Copyright (C) 2009 David T.L. Wong <davidtlwong@gmail.com>
*/
-#include <asm/div64.h>
+#include <linux/math64.h>
+#include <linux/units.h>
#include <media/dvb_frontend.h>
#include "atbm8830.h"
@@ -112,7 +113,7 @@ static int set_if_freq(struct atbm_state *priv, u32 freq /*in kHz*/)
if (freq != 0) {
/* 2 * PI * (freq - fs) / fs * (2 ^ 22) */
- t = (u64) 2 * 31416 * (freq - fs);
+ t = 2 * DIV_ROUND_UP_ULL(PI, 100000) * (freq - fs);
t <<= 22;
do_div(t, fs);
do_div(t, 1000);
--
2.50.1
next prev parent reply other threads:[~2025-10-27 14:39 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-27 14:34 [PATCH v1 0/6] iio: Introduce and use value of π Andy Shevchenko
2025-10-27 14:34 ` [PATCH v1 1/6] media: vidtv: Rename PI definition to PI_SAMPLES Andy Shevchenko
2025-10-30 7:24 ` Hans Verkuil
2025-10-27 14:34 ` [PATCH v1 2/6] units: Add value of π * 10⁹ Andy Shevchenko
2025-10-27 14:52 ` Jonathan Cameron
2025-10-27 14:59 ` David Lechner
2025-10-28 8:09 ` Andy Shevchenko
2025-10-27 19:30 ` David Laight
2025-10-28 8:08 ` Andy Shevchenko
2025-10-28 9:27 ` David Laight
2025-10-27 14:34 ` Andy Shevchenko [this message]
2025-10-30 7:26 ` [PATCH v1 3/6] media: dvb-frontends: atbm8830: Convert to use PI definition Hans Verkuil
2025-10-27 14:34 ` [PATCH v1 4/6] iio: cros_ec_sensors: " Andy Shevchenko
2025-10-27 14:34 ` [PATCH v1 5/6] iio: frequency: ad9523: " Andy Shevchenko
2025-10-27 14:34 ` [PATCH v1 6/6] iio: position: iqs624-pos: " Andy Shevchenko
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