linux-kernel - [PATCH 1/2] mfd: lm3533: add boost frequency and ovp to platform data

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Date:	Thu, 10 May 2012 14:11:28 +0200
From:	Johan Hovold <jhovold@...il.com>
To:	Samuel Ortiz <sameo@...ux.intel.com>
Cc:	Rob Landley <rob@...dley.net>, Richard Purdie <rpurdie@...ys.net>,
	Jonathan Cameron <jic23@....ac.uk>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Florian Tobias Schandinat <FlorianSchandinat@....de>,
	Arnd Bergmann <arnd@...db.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	Johan Hovold <jhovold@...il.com>
Subject: [PATCH 1/2] mfd: lm3533: add boost frequency and ovp to platform data

Add boost-frequency and over-voltage-protection settings to platform
data.

Signed-off-by: Johan Hovold <jhovold@...il.com>
---
 drivers/mfd/lm3533-core.c  |   50 ++++++++++++++++++++++++++++++++++++++++++++
 include/linux/mfd/lm3533.h |   15 +++++++++++++
 2 files changed, 65 insertions(+), 0 deletions(-)

diff --git a/drivers/mfd/lm3533-core.c b/drivers/mfd/lm3533-core.c
index 75f4b7f..053438c 100644
--- a/drivers/mfd/lm3533-core.c
+++ b/drivers/mfd/lm3533-core.c
@@ -138,6 +138,35 @@ int lm3533_update(struct lm3533 *lm3533, u8 reg, u8 val, u8 mask)
 }
 EXPORT_SYMBOL_GPL(lm3533_update);
 
+static int lm3533_set_boost_freq(struct lm3533 *lm3533,
+						enum lm3533_boost_freq freq)
+{
+	int ret;
+
+	ret = lm3533_update(lm3533, LM3533_REG_BOOST_PWM,
+					freq << LM3533_BOOST_FREQ_SHIFT,
+					LM3533_BOOST_FREQ_MASK);
+	if (ret)
+		dev_err(lm3533->dev, "failed to set boost frequency\n");
+
+	return ret;
+}
+
+
+static int lm3533_set_boost_ovp(struct lm3533 *lm3533,
+						enum lm3533_boost_ovp ovp)
+{
+	int ret;
+
+	ret = lm3533_update(lm3533, LM3533_REG_BOOST_PWM,
+					ovp << LM3533_BOOST_OVP_SHIFT,
+					LM3533_BOOST_OVP_MASK);
+	if (ret)
+		dev_err(lm3533->dev, "failed to set boost ovp\n");
+
+	return ret;
+}
+
 /*
  * HVLED output config -- output hvled controlled by backlight bl
  */
@@ -521,6 +550,22 @@ static int __devinit lm3533_device_led_init(struct lm3533 *lm3533)
 	return 0;
 }
 
+static int __devinit lm3533_device_setup(struct lm3533 *lm3533,
+					struct lm3533_platform_data *pdata)
+{
+	int ret;
+
+	ret = lm3533_set_boost_freq(lm3533, pdata->boost_freq);
+	if (ret)
+		return ret;
+
+	ret = lm3533_set_boost_ovp(lm3533, pdata->boost_ovp);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
 static int __devinit lm3533_device_init(struct lm3533 *lm3533)
 {
 	struct lm3533_platform_data *pdata = lm3533->dev->platform_data;
@@ -550,6 +595,10 @@ static int __devinit lm3533_device_init(struct lm3533 *lm3533)
 
 	lm3533_enable(lm3533);
 
+	ret = lm3533_device_setup(lm3533, pdata);
+	if (ret)
+		goto err_disable;
+
 	lm3533_device_als_init(lm3533);
 	lm3533_device_bl_init(lm3533);
 	lm3533_device_led_init(lm3533);
@@ -564,6 +613,7 @@ static int __devinit lm3533_device_init(struct lm3533 *lm3533)
 
 err_unregister:
 	mfd_remove_devices(lm3533->dev);
+err_disable:
 	lm3533_disable(lm3533);
 	if (gpio_is_valid(lm3533->gpio_hwen))
 		gpio_free(lm3533->gpio_hwen);
diff --git a/include/linux/mfd/lm3533.h b/include/linux/mfd/lm3533.h
index 75f85f3..3361137 100644
--- a/include/linux/mfd/lm3533.h
+++ b/include/linux/mfd/lm3533.h
@@ -59,9 +59,24 @@ struct lm3533_led_platform_data {
 	u8 pwm;				/* 0 - 0x3f */
 };
 
+enum lm3533_boost_freq {
+	LM3533_BOOST_FREQ_500KHZ,
+	LM3533_BOOST_FREQ_1000KHZ,
+};
+
+enum lm3533_boost_ovp {
+	LM3533_BOOST_OVP_16V,
+	LM3533_BOOST_OVP_24V,
+	LM3533_BOOST_OVP_32V,
+	LM3533_BOOST_OVP_40V,
+};
+
 struct lm3533_platform_data {
 	int gpio_hwen;
 
+	enum lm3533_boost_ovp boost_ovp;
+	enum lm3533_boost_freq boost_freq;
+
 	struct lm3533_als_platform_data *als;
 
 	struct lm3533_bl_platform_data *backlights;
-- 
1.7.8.5

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