mfd: Add boost frequency and ovp to lm3533 platform data

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

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

2 files changed, 65 insertions, 0 deletions

diff --git a/drivers/mfd/lm3533-core.c b/drivers/mfd/lm3533-core.c
index 75f4b7f5a4fd..053438cff10a 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 75f85f3fbd90..336113759fd1 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;