linux-kernel - [PATCH v3 02/10] pwm: clps711x: populate PWM mode in of

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Message-ID: <1519300881-8136-3-git-send-email-claudiu.beznea@microchip.com>
Date:   Thu, 22 Feb 2018 14:01:13 +0200
From:   Claudiu Beznea <claudiu.beznea@...rochip.com>
To:     <thierry.reding@...il.com>, <shc_work@...l.ru>, <kgene@...nel.org>,
        <krzk@...nel.org>, <linux@...linux.org.uk>,
        <mturquette@...libre.com>, <sboyd@...eaurora.org>,
        <jani.nikula@...ux.intel.com>, <joonas.lahtinen@...ux.intel.com>,
        <rodrigo.vivi@...el.com>, <airlied@...ux.ie>, <kamil@...as.org>,
        <b.zolnierkie@...sung.com>, <jdelvare@...e.com>,
        <linux@...ck-us.net>, <dmitry.torokhov@...il.com>,
        <rpurdie@...ys.net>, <jacek.anaszewski@...il.com>, <pavel@....cz>,
        <mchehab@...nel.org>, <sean@...s.org>, <lee.jones@...aro.org>,
        <daniel.thompson@...aro.org>, <jingoohan1@...il.com>,
        <milo.kim@...com>, <robh+dt@...nel.org>, <mark.rutland@....com>,
        <corbet@....net>, <nicolas.ferre@...rochip.com>,
        <alexandre.belloni@...e-electrons.com>
CC:     <linux-pwm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-samsung-soc@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <intel-gfx@...ts.freedesktop.org>,
        <dri-devel@...ts.freedesktop.org>, <linux-hwmon@...r.kernel.org>,
        <linux-input@...r.kernel.org>, <linux-leds@...r.kernel.org>,
        <linux-media@...r.kernel.org>, <linux-fbdev@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-doc@...r.kernel.org>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>
Subject: [PATCH v3 02/10] pwm: clps711x: populate PWM mode in of_xlate function

Populate PWM mode in of_xlate function to avoid pwm_apply_state() failure.

Signed-off-by: Claudiu Beznea <claudiu.beznea@...rochip.com>
---
 drivers/pwm/pwm-clps711x.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/pwm/pwm-clps711x.c b/drivers/pwm/pwm-clps711x.c
index 26ec24e457b1..2a4d31ab3af0 100644
--- a/drivers/pwm/pwm-clps711x.c
+++ b/drivers/pwm/pwm-clps711x.c
@@ -109,10 +109,20 @@ static const struct pwm_ops clps711x_pwm_ops = {
 static struct pwm_device *clps711x_pwm_xlate(struct pwm_chip *chip,
 					     const struct of_phandle_args *args)
 {
+	struct pwm_device *pwm;
+	struct pwm_caps caps;
+
 	if (args->args[0] >= chip->npwm)
 		return ERR_PTR(-EINVAL);
 
-	return pwm_request_from_chip(chip, args->args[0], NULL);
+	pwm = pwm_request_from_chip(chip, args->args[0], NULL);
+	if (IS_ERR(pwm))
+		return pwm;
+
+	pwm_get_caps(chip, pwm, &caps);
+	pwm->args.mode = BIT(ffs(caps.modes) - 1);
+
+	return pwm;
 }
 
 static int clps711x_pwm_probe(struct platform_device *pdev)
-- 
2.7.4