backlight: add new lm3639 backlight driver

This driver is a general version for LM3639 backlgiht + flash driver chip
of TI.

LM3639:
The LM3639 is a single chip LCD Display Backlight driver + white LED
Camera driver.  Programming is done over an I2C compatible interface.
www.ti.com

[akpm@linux-foundation.org: code layout tweaks]
Signed-off-by: G.Shark Jeong <gshark.jeong@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Daniel Jeong <daniel.jeong@ti.com>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 69 insertions, 0 deletions

diff --git a/include/linux/platform_data/lm3639_bl.h b/include/linux/platform_data/lm3639_bl.h
new file mode 100644
index 000000000000..5234cd5ed166
--- /dev/null
+++ b/include/linux/platform_data/lm3639_bl.h
@@ -0,0 +1,69 @@
+/*
+* Simple driver for Texas Instruments LM3630 LED Flash driver chip
+* Copyright (C) 2012 Texas Instruments
+*
+* This program is free software; you can redistribute it and/or modify
+* it under the terms of the GNU General Public License version 2 as
+* published by the Free Software Foundation.
+*
+*/
+
+#ifndef __LINUX_LM3639_H
+#define __LINUX_LM3639_H
+
+#define LM3639_NAME "lm3639_bl"
+
+enum lm3639_pwm {
+        LM3639_PWM_DISABLE = 0x00,
+        LM3639_PWM_EN_ACTLOW = 0x48,
+        LM3639_PWM_EN_ACTHIGH = 0x40,
+};
+
+enum lm3639_strobe {
+        LM3639_STROBE_DISABLE = 0x00,
+        LM3639_STROBE_EN_ACTLOW = 0x10,
+        LM3639_STROBE_EN_ACTHIGH = 0x30,
+};
+
+enum lm3639_txpin {
+        LM3639_TXPIN_DISABLE = 0x00,
+        LM3639_TXPIN_EN_ACTLOW = 0x04,
+        LM3639_TXPIN_EN_ACTHIGH = 0x0C,
+};
+
+enum lm3639_fleds {
+        LM3639_FLED_DIASBLE_ALL = 0x00,
+        LM3639_FLED_EN_1 = 0x40,
+        LM3639_FLED_EN_2 = 0x20,
+        LM3639_FLED_EN_ALL = 0x60,
+};
+
+enum lm3639_bleds {
+        LM3639_BLED_DIASBLE_ALL = 0x00,
+        LM3639_BLED_EN_1 = 0x10,
+        LM3639_BLED_EN_2 = 0x08,
+        LM3639_BLED_EN_ALL = 0x18,
+};
+enum lm3639_bled_mode {
+        LM3639_BLED_MODE_EXPONETIAL = 0x00,
+        LM3639_BLED_MODE_LINEAR = 0x10,
+};
+
+struct lm3639_platform_data {
+        unsigned int max_brt_led;
+        unsigned int init_brt_led;
+
+        /* input pins */
+        enum lm3639_pwm pin_pwm;
+        enum lm3639_strobe pin_strobe;
+        enum lm3639_txpin pin_tx;
+
+        /* output pins */
+        enum lm3639_fleds fled_pins;
+        enum lm3639_bleds bled_pins;
+        enum lm3639_bled_mode bled_mode;
+
+        void (*pwm_set_intensity) (int brightness, int max_brightness);
+        int (*pwm_get_intensity) (void);
+};
+#endif /* __LINUX_LM3639_H */