linux-kernel - [PATCH v5 44/46] video: ssd1307fb: switch to the atomic PWM API

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Date:	Wed, 30 Mar 2016 22:04:07 +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 44/46] video: ssd1307fb: 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/fbdev/ssd1307fb.c | 24 +++++++++++++++++++-----
 1 file changed, 19 insertions(+), 5 deletions(-)

diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c
index df9c63a..ed9a115 100644
--- a/drivers/video/fbdev/ssd1307fb.c
+++ b/drivers/video/fbdev/ssd1307fb.c
@@ -289,6 +289,8 @@ static int ssd1307fb_init(struct ssd1307fb_par *par)
 	struct pwm_args pargs = { };
 
 	if (par->device_info->need_pwm) {
+		struct pwm_state pstate;
+
 		par->pwm = pwm_get(&par->client->dev, NULL);
 		if (IS_ERR(par->pwm)) {
 			dev_err(&par->client->dev, "Could not get PWM from device tree!\n");
@@ -296,10 +298,14 @@ static int ssd1307fb_init(struct ssd1307fb_par *par)
 		}
 
 		pwm_get_args(par->pwm, &pargs);
+		pwm_get_state(par->pwm, &pstate);
 		par->pwm_period = pargs.period;
+
 		/* Enable the PWM */
-		pwm_config(par->pwm, par->pwm_period / 2, par->pwm_period);
-		pwm_enable(par->pwm);
+		pstate.period = pargs.period;
+		pstate.duty_cycle = pstate.period / 2;
+		pstate.enabled = true;
+		pwm_apply_state(par->pwm, &pstate);
 
 		dev_dbg(&par->client->dev, "Using PWM%d with a %dns period.\n",
 			par->pwm->pwm, par->pwm_period);
@@ -685,8 +691,12 @@ static int ssd1307fb_probe(struct i2c_client *client,
 bl_init_error:
 	unregister_framebuffer(info);
 panel_init_error:
-	if (par->device_info->need_pwm) {
-		pwm_disable(par->pwm);
+	if (par->device_info->need_pwm && par->pwm) {
+		struct pwm_state pstate;
+
+		pwm_get_state(par->pwm, &pstate);
+		pstate.enabled = false;
+		pwm_apply_state(par->pwm, &pstate);
 		pwm_put(par->pwm);
 	};
 reset_oled_error:
@@ -707,7 +717,11 @@ static int ssd1307fb_remove(struct i2c_client *client)
 
 	unregister_framebuffer(info);
 	if (par->device_info->need_pwm) {
-		pwm_disable(par->pwm);
+		struct pwm_state pstate;
+
+		pwm_get_state(par->pwm, &pstate);
+		pstate.enabled = false;
+		pwm_apply_state(par->pwm, &pstate);
 		pwm_put(par->pwm);
 	};
 	fb_deferred_io_cleanup(info);
-- 
2.5.0