mfd: Add LM3533 lighting-power core driver

Add support for National Semiconductor / TI LM3533 lighting power chips.

This is the core driver which provides register access over I2C and
registers the ambient-light-sensor, LED and backlight sub-drivers.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 89 insertions, 0 deletions

diff --git a/include/linux/mfd/lm3533.h b/include/linux/mfd/lm3533.h
new file mode 100644
index 000000000000..75f85f3fbd90
--- /dev/null
+++ b/include/linux/mfd/lm3533.h
@@ -0,0 +1,89 @@
+/*
+ * lm3533.h -- LM3533 interface
+ *
+ * Copyright (C) 2011-2012 Texas Instruments
+ *
+ * Author: Johan Hovold <jhovold@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under  the terms of the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __LINUX_MFD_LM3533_H
+#define __LINUX_MFD_LM3533_H
+
+#define LM3533_ATTR_RO(_name) \
+        DEVICE_ATTR(_name, S_IRUGO, show_##_name, NULL)
+#define LM3533_ATTR_RW(_name) \
+        DEVICE_ATTR(_name, S_IRUGO | S_IWUSR , show_##_name, store_##_name)
+
+struct device;
+struct regmap;
+
+struct lm3533 {
+        struct device *dev;
+
+        struct regmap *regmap;
+
+        int gpio_hwen;
+        int irq;
+
+        unsigned have_als:1;
+        unsigned have_backlights:1;
+        unsigned have_leds:1;
+};
+
+struct lm3533_ctrlbank {
+        struct lm3533 *lm3533;
+        struct device *dev;
+        int id;
+};
+
+struct lm3533_als_platform_data {
+        unsigned pwm_mode:1;            /* PWM input mode (default analog) */
+};
+
+struct lm3533_bl_platform_data {
+        char *name;
+        u8 default_brightness;          /* 0 - 255 */
+        u8 max_current;                 /* 0 - 31 */
+        u8 pwm;                         /* 0 - 0x3f */
+};
+
+struct lm3533_led_platform_data {
+        char *name;
+        const char *default_trigger;
+        u8 max_current;                 /* 0 - 31 */
+        u8 pwm;                         /* 0 - 0x3f */
+};
+
+struct lm3533_platform_data {
+        int gpio_hwen;
+
+        struct lm3533_als_platform_data *als;
+
+        struct lm3533_bl_platform_data *backlights;
+        int num_backlights;
+
+        struct lm3533_led_platform_data *leds;
+        int num_leds;
+};
+
+extern int lm3533_ctrlbank_enable(struct lm3533_ctrlbank *cb);
+extern int lm3533_ctrlbank_disable(struct lm3533_ctrlbank *cb);
+
+extern int lm3533_ctrlbank_set_brightness(struct lm3533_ctrlbank *cb, u8 val);
+extern int lm3533_ctrlbank_get_brightness(struct lm3533_ctrlbank *cb, u8 *val);
+extern int lm3533_ctrlbank_set_max_current(struct lm3533_ctrlbank *cb, u8 val);
+extern int lm3533_ctrlbank_get_max_current(struct lm3533_ctrlbank *cb,
+                                                                u8 *val);
+extern int lm3533_ctrlbank_set_pwm(struct lm3533_ctrlbank *cb, u8 val);
+extern int lm3533_ctrlbank_get_pwm(struct lm3533_ctrlbank *cb, u8 *val);
+
+extern int lm3533_read(struct lm3533 *lm3533, u8 reg, u8 *val);
+extern int lm3533_write(struct lm3533 *lm3533, u8 reg, u8 val);
+extern int lm3533_update(struct lm3533 *lm3533, u8 reg, u8 val, u8 mask);
+
+#endif  /* __LINUX_MFD_LM3533_H */