From: Guru Das Srinagesh <gurus@codeaurora.org>
To: linux-pwm@vger.kernel.org
Cc: "Thierry Reding" <thierry.reding@gmail.com>,
"Uwe Kleine-König" <uwe@kleine-koenig.org>,
"Subbaraman Narayanamurthy" <subbaram@codeaurora.org>,
linux-kernel@vger.kernel.org,
"Guru Das Srinagesh" <gurus@codeaurora.org>,
"Maxime Ripard" <mripard@kernel.org>,
"Chen-Yu Tsai" <wens@csie.org>,
"Philipp Zabel" <p.zabel@pengutronix.de>
Subject: [PATCH v10 09/12] pwm: sun4i: Use 64-bit division function
Date: Thu, 19 Mar 2020 13:50:12 -0700 [thread overview]
Message-ID: <35175421d61379c28702d4be0e137bca8a554eb2.1584650604.git.gurus@codeaurora.org> (raw)
In-Reply-To: <cover.1584650604.git.gurus@codeaurora.org>
In-Reply-To: <cover.1584650604.git.gurus@codeaurora.org>
Since the PWM framework is switching struct pwm_state.period's datatype
to u64, prepare for this transition by using div_u64 to handle a 64-bit
dividend instead of a straight division operation.
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Guru Das Srinagesh <gurus@codeaurora.org>
---
drivers/pwm/pwm-sun4i.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pwm/pwm-sun4i.c b/drivers/pwm/pwm-sun4i.c
index 3e3efa6..772fdf4 100644
--- a/drivers/pwm/pwm-sun4i.c
+++ b/drivers/pwm/pwm-sun4i.c
@@ -286,7 +286,7 @@ static int sun4i_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
val = (duty & PWM_DTY_MASK) | PWM_PRD(period);
sun4i_pwm_writel(sun4i_pwm, val, PWM_CH_PRD(pwm->hwpwm));
sun4i_pwm->next_period[pwm->hwpwm] = jiffies +
- usecs_to_jiffies(cstate.period / 1000 + 1);
+ usecs_to_jiffies(div_u64(cstate.period, 1000) + 1);
sun4i_pwm->needs_delay[pwm->hwpwm] = true;
if (state->polarity != PWM_POLARITY_NORMAL)
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2020-03-19 20:50 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1584650604.git.gurus@codeaurora.org>
2020-03-19 20:50 ` [PATCH v10 01/12] drm/i915: Use 64-bit division macro Guru Das Srinagesh
2020-03-19 20:50 ` [PATCH v10 02/12] hwmon: pwm-fan: " Guru Das Srinagesh
2020-03-19 21:12 ` Guenter Roeck
2020-03-20 1:13 ` Guru Das Srinagesh
2020-03-19 20:50 ` [PATCH v10 03/12] ir-rx51: " Guru Das Srinagesh
2020-03-19 20:50 ` [PATCH v10 04/12] pwm: clps711x: Cast period to u32 before use as divisor Guru Das Srinagesh
2020-03-19 20:50 ` [PATCH v10 05/12] pwm: pwm-imx-tpm: Use 64-bit division macro Guru Das Srinagesh
2020-03-19 20:50 ` [PATCH v10 06/12] pwm: imx27: Use 64-bit division macro and function Guru Das Srinagesh
2020-03-19 20:50 ` [PATCH v10 07/12] pwm: sifive: Use 64-bit division macro Guru Das Srinagesh
2020-03-19 20:50 ` [PATCH v10 08/12] pwm: stm32-lp: Use %llu format specifier for period Guru Das Srinagesh
2020-03-19 20:50 ` Guru Das Srinagesh [this message]
2020-03-19 20:50 ` [PATCH v10 10/12] backlight: pwm_bl: Use 64-bit division function Guru Das Srinagesh
2020-03-19 20:50 ` [PATCH v10 11/12] clk: pwm: Assign u64 divisor to unsigned int before use Guru Das Srinagesh
2020-03-19 20:50 ` [PATCH v10 12/12] pwm: core: Convert period and duty cycle to u64 Guru Das Srinagesh
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