[PATCH v3 09/14] regulator: pwm: Adjust PWM config at probe time

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From	Boris Brezillon <boris.brezillon@free-electrons.com>
Newsgroups	linux.kernel
Subject	[PATCH v3 09/14] regulator: pwm: Adjust PWM config at probe time
Date	Tue, 14 Jun 2016 11:20:02 +0200
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X-Original-Cc	Heiko Stuebner <heiko@sntech.de>, linux-rockchip@lists.infradead.org, Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>, Mark Rutland <mark.rutland@arm.com>, Ian Campbell <ijc+devicetree@hellion.org.uk>, Kumar Gala <galak@codeaurora.org>, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Milo Kim <milo.kim@ti.com>, Doug Anderson <dianders@google.com>, Caesar Wang <wxt@rock-chips.com>, Stephen Barber <smbarber@chromium.org>, Brian Norris <briannorris@chromium.org>, Ajit Pal Singh <ajitpal.singh@st.com>, Srinivas Kandagatla <srinivas.kandagatla@gmail.com>, Maxime Coquelin <maxime.coquelin@st.com>, Patrice Chotard <patrice.chotard@st.com>, kernel@stlinux.com, Laxman Dewangan <ldewangan@nvidia.com>, Boris Brezillon <boris.brezillon@free-electrons.com>
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The PWM attached to a PWM regulator device might have been previously
configured by the bootloader.
Make sure the bootloader and linux config are in sync, and adjust the PWM
config if that's not the case.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Brian Norris <briannorris@chromium.org>
Tested-by: Brian Norris <briannorris@chromium.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
---
 drivers/regulator/pwm-regulator.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/regulator/pwm-regulator.c b/drivers/regulator/pwm-regulator.c
index ab3cc02..524b43f 100644
--- a/drivers/regulator/pwm-regulator.c
+++ b/drivers/regulator/pwm-regulator.c
@@ -285,11 +285,9 @@ static int pwm_regulator_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	/*
-	 * FIXME: pwm_apply_args() should be removed when switching to the
-	 * atomic PWM API.
-	 */
-	pwm_apply_args(drvdata->pwm);
+	ret = pwm_adjust_config(drvdata->pwm);
+	if (ret)
+		return ret;
 
 	regulator = devm_regulator_register(&pdev->dev,
 					    &drvdata->desc, &config);
-- 
2.7.4

Thread

[PATCH v3 00/14] regulator: pwm: various improvements Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-06-14 11:20 +0200
  [PATCH v3 04/14] pwm: rockchip: Add support for hardware readout Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-06-14 11:20 +0200
  [PATCH v3 05/14] pwm: rockchip: Avoid glitches on already running PWMs Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-06-14 11:20 +0200
  [PATCH v3 09/14] regulator: pwm: Adjust PWM config at probe time Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-06-14 11:20 +0200
  [PATCH v3 02/14] pwm: Add two helpers to ease relative duty cycle manipulation Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-06-14 11:20 +0200
  [PATCH v3 08/14] pwm: sti: Avoid glitches on already running PWMs Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-06-14 11:20 +0200
  [PATCH v3 13/14] regulator: pwm: Support extra continuous mode cases Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-06-14 11:20 +0200
  [PATCH v3 03/14] pwm: rockchip: Fix period and duty_cycle approximation Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-06-14 11:20 +0200

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