linux-kernel - [PATCH v5 28/46] regulator: pwm: swith to the atomic PWM API

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Date:	Wed, 30 Mar 2016 22:03:51 +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>,
	Chen-Yu Tsai <wens@...e.org>, linux-sunxi@...glegroups.com,
	Joachim Eastwood <manabian@...il.com>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Heiko Stuebner <heiko@...ech.de>,
	linux-rockchip@...ts.infradead.org,
	Jingoo Han <jingoohan1@...il.com>,
	Lee Jones <lee.jones@...aro.org>, linux-fbdev@...r.kernel.org,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	Robert Jarzmik <robert.jarzmik@...e.fr>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Kukjin Kim <kgene@...nel.org>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	linux-samsung-soc@...r.kernel.org, intel-gfx@...ts.freedesktop.org,
	Daniel Vetter <daniel.vetter@...el.com>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	Jonathan Corbet <corbet@....net>, linux-doc@...r.kernel.org,
	David Airlie <airlied@...ux.ie>,
	Daniel Vetter <daniel@...ll.ch>,
	dri-devel@...ts.freedesktop.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Hartley Sweeten <hsweeten@...ionengravers.com>,
	Ryan Mallon <rmallon@...il.com>,
	Alexander Shiyan <shc_work@...l.ru>,
	Milo Kim <milo.kim@...com>,
	Boris Brezillon <boris.brezillon@...e-electrons.com>
Subject: [PATCH v5 28/46] regulator: pwm: swith to the atomic PWM API

pwm_config/enable/disable() have been deprecated in favor of
pwm_apply_state().
Replace all those calls with the equivalent pwm_get/apply_state().

Signed-off-by: Boris Brezillon <boris.brezillon@...e-electrons.com>
---
 drivers/regulator/pwm-regulator.c | 54 ++++++++++++++++++++++++---------------
 1 file changed, 34 insertions(+), 20 deletions(-)

diff --git a/drivers/regulator/pwm-regulator.c b/drivers/regulator/pwm-regulator.c
index 9590fb0..42cc312 100644
--- a/drivers/regulator/pwm-regulator.c
+++ b/drivers/regulator/pwm-regulator.c
@@ -59,16 +59,18 @@ static int pwm_regulator_set_voltage_sel(struct regulator_dev *rdev,
 					 unsigned selector)
 {
 	struct pwm_regulator_data *drvdata = rdev_get_drvdata(rdev);
-	struct pwm_args pargs = { };
-	int dutycycle;
+	struct pwm_state pstate = { };
+	u64 dutycycle;
 	int ret;
 
-	pwm_get_args(drvdata->pwm, &pargs);
+	pwm_get_state(drvdata->pwm, &pstate);
 
-	dutycycle = (pargs.period *
-		    drvdata->duty_cycle_table[selector].dutycycle) / 100;
+	dutycycle = drvdata->duty_cycle_table[selector].dutycycle;
+	dutycycle *= pstate.period;
+	do_div(dutycycle, 100);
+	pstate.duty_cycle = dutycycle;
 
-	ret = pwm_config(drvdata->pwm, dutycycle, pargs.period);
+	ret = pwm_apply_state(drvdata->pwm, &pstate);
 	if (ret) {
 		dev_err(&rdev->dev, "Failed to configure PWM\n");
 		return ret;
@@ -93,24 +95,39 @@ static int pwm_regulator_list_voltage(struct regulator_dev *rdev,
 static int pwm_regulator_enable(struct regulator_dev *dev)
 {
 	struct pwm_regulator_data *drvdata = rdev_get_drvdata(dev);
+	struct pwm_state pstate = { };
+
+	pwm_get_state(drvdata->pwm, &pstate);
+	if (pstate.enabled)
+		return 0;
+
+	pstate.enabled = true;
 
-	return pwm_enable(drvdata->pwm);
+	return pwm_apply_state(drvdata->pwm, &pstate);
 }
 
 static int pwm_regulator_disable(struct regulator_dev *dev)
 {
 	struct pwm_regulator_data *drvdata = rdev_get_drvdata(dev);
+	struct pwm_state pstate = { };
 
-	pwm_disable(drvdata->pwm);
+	pwm_get_state(drvdata->pwm, &pstate);
+	if (!pstate.enabled)
+		return 0;
 
-	return 0;
+	pstate.enabled = false;
+
+	return pwm_apply_state(drvdata->pwm, &pstate);
 }
 
 static int pwm_regulator_is_enabled(struct regulator_dev *dev)
 {
 	struct pwm_regulator_data *drvdata = rdev_get_drvdata(dev);
+	struct pwm_state pstate = { };
 
-	return pwm_is_enabled(drvdata->pwm);
+	pwm_get_state(drvdata->pwm, &pstate);
+
+	return pstate.enabled;
 }
 
 /**
@@ -138,25 +155,22 @@ static int pwm_regulator_set_voltage(struct regulator_dev *rdev,
 {
 	struct pwm_regulator_data *drvdata = rdev_get_drvdata(rdev);
 	unsigned int ramp_delay = rdev->constraints->ramp_delay;
-	struct pwm_args pargs = { };
-	int duty_cycle;
+	struct pwm_state pstate = { };
+	u64 duty_cycle;
 	int ret;
 
-	pwm_get_args(drvdata->pwm, &pargs);
+	pwm_get_state(drvdata->pwm, &pstate);
 	duty_cycle = pwm_voltage_to_duty_cycle_percentage(rdev, min_uV);
+	duty_cycle *= pstate.period;
+	do_div(duty_cycle, 100);
+	pstate.duty_cycle = duty_cycle;
 
-	ret = pwm_config(drvdata->pwm, (pargs.period / 100) * duty_cycle,
-			 pargs.period);
+	ret = pwm_apply_state(drvdata->pwm, &pstate);
 	if (ret) {
 		dev_err(&rdev->dev, "Failed to configure PWM\n");
 		return ret;
 	}
 
-	ret = pwm_enable(drvdata->pwm);
-	if (ret) {
-		dev_err(&rdev->dev, "Failed to enable PWM\n");
-		return ret;
-	}
 	drvdata->volt_uV = min_uV;
 
 	/* Delay required by PWM regulator to settle to the new voltage */
-- 
2.5.0