From: David Wu <david.wu@rock-chips.com>
To: thierry.reding@gmail.com, heiko@sntech.de,
boris.brezillon@free-electrons.com, robh+dt@kernel.org
Cc: catalin.marinas@arm.com, briannorris@chromium.org,
dianders@chromium.org, mark.rutland@arm.com,
huangtao@rock-chips.com, linux-pwm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, David Wu <david.wu@rock-chips.com>
Subject: [PATCH 2/5] pwm: rockchip: Remove the judge from return value of rockchip_pwm_config()
Date: Thu, 29 Jun 2017 20:27:48 +0800 [thread overview]
Message-ID: <1498739271-27431-3-git-send-email-david.wu@rock-chips.com> (raw)
In-Reply-To: <1498739271-27431-1-git-send-email-david.wu@rock-chips.com>
It seems the rockchip_pwm_config always returns the result 0,
so remove the judge.
Signed-off-by: David Wu <david.wu@rock-chips.com>
---
drivers/pwm/pwm-rockchip.c | 12 ++----------
1 file changed, 2 insertions(+), 10 deletions(-)
diff --git a/drivers/pwm/pwm-rockchip.c b/drivers/pwm/pwm-rockchip.c
index 617824c..cd45f17 100644
--- a/drivers/pwm/pwm-rockchip.c
+++ b/drivers/pwm/pwm-rockchip.c
@@ -165,7 +165,7 @@ static void rockchip_pwm_get_state(struct pwm_chip *chip,
clk_disable(pc->pclk);
}
-static int rockchip_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
+static void rockchip_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
int duty_ns, int period_ns)
{
struct rockchip_pwm_chip *pc = to_rockchip_pwm_chip(chip);
@@ -188,8 +188,6 @@ static int rockchip_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
writel(period, pc->base + pc->data->regs.period);
writel(duty, pc->base + pc->data->regs.duty);
-
- return 0;
}
static int rockchip_pwm_enable(struct pwm_chip *chip,
@@ -236,13 +234,7 @@ static int rockchip_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
enabled = false;
}
- ret = rockchip_pwm_config(chip, pwm, state->duty_cycle, state->period);
- if (ret) {
- if (enabled != curstate.enabled)
- rockchip_pwm_enable(chip, pwm, !enabled,
- state->polarity);
- goto out;
- }
+ rockchip_pwm_config(chip, pwm, state->duty_cycle, state->period);
if (state->enabled != enabled) {
ret = rockchip_pwm_enable(chip, pwm, state->enabled,
--
1.9.1
next prev parent reply other threads:[~2017-06-29 12:27 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-29 12:27 [PATCH 0/5] Add rk3328 pwm support David Wu
[not found] ` <1498739271-27431-1-git-send-email-david.wu-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
2017-06-29 12:27 ` [PATCH 1/5] pwm: rockchip: Add APB and function both clocks support David Wu
[not found] ` <1498739271-27431-2-git-send-email-david.wu-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
2017-07-06 17:12 ` Rob Herring
2017-06-29 12:27 ` [PATCH 3/5] pwm: rockchip: Move the configuration of polarity from rockchip_pwm_set_enable() to rockchip_pwm_config() David Wu
[not found] ` <1498739271-27431-4-git-send-email-david.wu-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
2017-07-03 18:36 ` Boris Brezillon
2017-07-04 6:46 ` David.Wu
2017-06-29 12:27 ` David Wu [this message]
2017-07-03 18:31 ` [PATCH 2/5] pwm: rockchip: Remove the judge from return value of rockchip_pwm_config() Boris Brezillon
2017-06-29 12:27 ` [PATCH 4/5] pwm: rockchip: Add atomic updated feature for rk3328 David Wu
2017-07-03 18:39 ` Boris Brezillon
2017-07-04 7:37 ` David.Wu
2017-07-06 17:17 ` Rob Herring
2017-06-29 12:34 ` [PATCH 5/5] Arm64: dts: rockchip: Add pwm nodes " David Wu
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