1 files changed, 131 insertions, 0 deletions

diff --git a/include/linux/lp855x.h b/include/linux/lp855x.h
new file mode 100644
index 000000000000..781a490a451b
--- /dev/null
+++ b/include/linux/lp855x.h
@@ -0,0 +1,131 @@
+/*
+ * LP855x Backlight Driver
+ *
+ *                      Copyright (C) 2011 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 _LP855X_H
+#define _LP855X_H
+
+#define BL_CTL_SHFT     (0)
+#define BRT_MODE_SHFT   (1)
+#define BRT_MODE_MASK   (0x06)
+
+/* Enable backlight. Only valid when BRT_MODE=10(I2C only) */
+#define ENABLE_BL       (1)
+#define DISABLE_BL      (0)
+
+#define I2C_CONFIG(id)  id ## _I2C_CONFIG
+#define PWM_CONFIG(id)  id ## _PWM_CONFIG
+
+/* DEVICE CONTROL register - LP8550 */
+#define LP8550_PWM_CONFIG       (LP8550_PWM_ONLY << BRT_MODE_SHFT)
+#define LP8550_I2C_CONFIG       ((ENABLE_BL << BL_CTL_SHFT) | \
+                                (LP8550_I2C_ONLY << BRT_MODE_SHFT))
+
+/* DEVICE CONTROL register - LP8551 */
+#define LP8551_PWM_CONFIG       LP8550_PWM_CONFIG
+#define LP8551_I2C_CONFIG       LP8550_I2C_CONFIG
+
+/* DEVICE CONTROL register - LP8552 */
+#define LP8552_PWM_CONFIG       LP8550_PWM_CONFIG
+#define LP8552_I2C_CONFIG       LP8550_I2C_CONFIG
+
+/* DEVICE CONTROL register - LP8553 */
+#define LP8553_PWM_CONFIG       LP8550_PWM_CONFIG
+#define LP8553_I2C_CONFIG       LP8550_I2C_CONFIG
+
+/* DEVICE CONTROL register - LP8556 */
+#define LP8556_PWM_CONFIG       (LP8556_PWM_ONLY << BRT_MODE_SHFT)
+#define LP8556_COMB1_CONFIG     (LP8556_COMBINED1 << BRT_MODE_SHFT)
+#define LP8556_I2C_CONFIG       ((ENABLE_BL << BL_CTL_SHFT) | \
+                                (LP8556_I2C_ONLY << BRT_MODE_SHFT))
+#define LP8556_COMB2_CONFIG     (LP8556_COMBINED2 << BRT_MODE_SHFT)
+
+/* ROM area boundary */
+#define EEPROM_START    (0xA0)
+#define EEPROM_END      (0xA7)
+#define EPROM_START     (0xA0)
+#define EPROM_END       (0xAF)
+
+enum lp855x_chip_id {
+        LP8550,
+        LP8551,
+        LP8552,
+        LP8553,
+        LP8556,
+};
+
+enum lp855x_brightness_ctrl_mode {
+        PWM_BASED = 1,
+        REGISTER_BASED,
+};
+
+enum lp8550_brighntess_source {
+        LP8550_PWM_ONLY,
+        LP8550_I2C_ONLY = 2,
+};
+
+enum lp8551_brighntess_source {
+        LP8551_PWM_ONLY = LP8550_PWM_ONLY,
+        LP8551_I2C_ONLY = LP8550_I2C_ONLY,
+};
+
+enum lp8552_brighntess_source {
+        LP8552_PWM_ONLY = LP8550_PWM_ONLY,
+        LP8552_I2C_ONLY = LP8550_I2C_ONLY,
+};
+
+enum lp8553_brighntess_source {
+        LP8553_PWM_ONLY = LP8550_PWM_ONLY,
+        LP8553_I2C_ONLY = LP8550_I2C_ONLY,
+};
+
+enum lp8556_brightness_source {
+        LP8556_PWM_ONLY,
+        LP8556_COMBINED1,       /* pwm + i2c before the shaper block */
+        LP8556_I2C_ONLY,
+        LP8556_COMBINED2,       /* pwm + i2c after the shaper block */
+};
+
+struct lp855x_pwm_data {
+        void (*pwm_set_intensity) (int brightness, int max_brightness);
+        int (*pwm_get_intensity) (int max_brightness);
+};
+
+struct lp855x_rom_data {
+        u8 addr;
+        u8 val;
+};
+
+/**
+ * struct lp855x_platform_data
+ * @name : Backlight driver name. If it is not defined, default name is set.
+ * @mode : brightness control by pwm or lp855x register
+ * @device_control : value of DEVICE CONTROL register
+ * @initial_brightness : initial value of backlight brightness
+ * @pwm_data : platform specific pwm generation functions.
+                Only valid when mode is PWM_BASED.
+ * @load_new_rom_data :
+        0 : use default configuration data
+        1 : update values of eeprom or eprom registers on loading driver
+ * @size_program : total size of lp855x_rom_data
+ * @rom_data : list of new eeprom/eprom registers
+ */
+struct lp855x_platform_data {
+        char *name;
+        enum lp855x_brightness_ctrl_mode mode;
+        u8 device_control;
+        int initial_brightness;
+        struct lp855x_pwm_data pwm_data;
+        u8 load_new_rom_data;
+        int size_program;
+        struct lp855x_rom_data *rom_data;
+};
+
+#endif