linux-kernel - [PATCHv2 resend 10/11] leds: leds-pwm: retrieve configured pwm period

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Message-Id: <1400532162-29483-11-git-send-email-alexandre.belloni@free-electrons.com>
Date:	Mon, 19 May 2014 22:42:41 +0200
From:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:	Thierry Reding <thierry.reding@...il.com>
Cc:	Tony Lindgren <tony@...mide.com>,
	Philipp Zabel <philipp.zabel@...il.com>,
	Paul Parsons <lost.distance@...oo.com>,
	Simon Horman <horms@...ge.net.au>,
	Magnus Damm <magnus.damm@...il.com>,
	Eric Miao <eric.y.miao@...il.com>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	Bryan Wu <cooloney@...il.com>,
	Jingoo Han <jg1.han@...sung.com>,
	Lee Jones <lee.jones@...aro.org>, linux-pwm@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-omap@...r.kernel.org, linux-sh@...r.kernel.org,
	linux-leds@...r.kernel.org, linux-fbdev@...r.kernel.org,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Subject: [PATCHv2 resend 10/11] leds: leds-pwm: retrieve configured pwm period

The PWM core is now able to initialize the PWM period. Use it and if it is not
configured, use the supplied pwm_period_ns.

Signed-off-by: Alexandre Belloni <alexandre.belloni@...e-electrons.com>
---
 drivers/leds/leds-pwm.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/leds/leds-pwm.c b/drivers/leds/leds-pwm.c
index 7d0aaed1e23a..aa770ec1e892 100644
--- a/drivers/leds/leds-pwm.c
+++ b/drivers/leds/leds-pwm.c
@@ -181,7 +181,6 @@ static int led_pwm_probe(struct platform_device *pdev)
 			led_dat->cdev.name = cur_led->name;
 			led_dat->cdev.default_trigger = cur_led->default_trigger;
 			led_dat->active_low = cur_led->active_low;
-			led_dat->period = cur_led->pwm_period_ns;
 			led_dat->cdev.brightness_set = led_pwm_set;
 			led_dat->cdev.brightness = LED_OFF;
 			led_dat->cdev.max_brightness = cur_led->max_brightness;
@@ -191,6 +190,10 @@ static int led_pwm_probe(struct platform_device *pdev)
 			if (led_dat->can_sleep)
 				INIT_WORK(&led_dat->work, led_pwm_work);
 
+			led_dat->period = pwm_get_period(led_dat->pwm);
+			if (!led_dat->period && (cur_led->pwm_period_ns > 0))
+				led_dat->period = cur_led->pwm_period_ns;
+
 			ret = led_classdev_register(&pdev->dev, &led_dat->cdev);
 			if (ret < 0)
 				goto err;
-- 
1.9.1

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