linux-kernel - [PATCH v5 41/46] backlight: lp855x: switch to the atomic PWM API

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Message-Id: <1459368249-13241-42-git-send-email-boris.brezillon@free-electrons.com>
Date:	Wed, 30 Mar 2016 22:04:04 +0200
From:	Boris Brezillon <boris.brezillon@...e-electrons.com>
To:	Thierry Reding <thierry.reding@...il.com>,
	linux-pwm@...r.kernel.org
Cc:	Mike Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...eaurora.org>, linux-clk@...r.kernel.org,
	Mark Brown <broonie@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Kamil Debski <k.debski@...sung.com>, lm-sensors@...sensors.org,
	Jean Delvare <jdelvare@...e.com>,
	Guenter Roeck <linux@...ck-us.net>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	linux-input@...r.kernel.org, Bryan Wu <cooloney@...il.com>,
	Richard Purdie <rpurdie@...ys.net>,
	Jacek Anaszewski <j.anaszewski@...sung.com>,
	linux-leds@...r.kernel.org,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
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	Joachim Eastwood <manabian@...il.com>,
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	linux-samsung-soc@...r.kernel.org, intel-gfx@...ts.freedesktop.org,
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	Milo Kim <milo.kim@...com>,
	Boris Brezillon <boris.brezillon@...e-electrons.com>
Subject: [PATCH v5 41/46] backlight: lp855x: switch to the atomic PWM API

pwm_config/enable/disable() have been deprecated and should be replaced
by pwm_apply_state().

Signed-off-by: Boris Brezillon <boris.brezillon@...e-electrons.com>
---
 drivers/video/backlight/lp855x_bl.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/drivers/video/backlight/lp855x_bl.c b/drivers/video/backlight/lp855x_bl.c
index daca9e6..5468e7a 100644
--- a/drivers/video/backlight/lp855x_bl.c
+++ b/drivers/video/backlight/lp855x_bl.c
@@ -235,8 +235,7 @@ err:
 
 static void lp855x_pwm_ctrl(struct lp855x *lp, int br, int max_br)
 {
-	unsigned int period = lp->pdata->period_ns;
-	unsigned int duty = br * period / max_br;
+	struct pwm_state pstate;
 	struct pwm_device *pwm;
 
 	/* request pwm device with the consumer name */
@@ -248,11 +247,15 @@ static void lp855x_pwm_ctrl(struct lp855x *lp, int br, int max_br)
 		lp->pwm = pwm;
 	}
 
-	pwm_config(lp->pwm, duty, period);
-	if (duty)
-		pwm_enable(lp->pwm);
+	pwm_get_state(lp->pwm, &pstate);
+	pstate.period = lp->pdata->period_ns;
+	pstate.duty_cycle = br * pstate.period / max_br;
+	if (pstate.duty_cycle)
+		pstate.enabled = true;
 	else
-		pwm_disable(lp->pwm);
+		pstate.enabled = false;
+
+	pwm_apply_state(lp->pwm, &pstate);
 }
 
 static int lp855x_bl_update_status(struct backlight_device *bl)
-- 
2.5.0