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authorMichael Hennerich <michael.hennerich@analog.com>2010-04-30 14:09:51 -0700
committerRichard Purdie <rpurdie@linux.intel.com>2010-05-26 13:08:31 +0100
commit82fd53b7f70af9855eda613450a7e4701ffdae20 (patch)
treeb23e2494e9e6734f83de81111150364b7ac9be00 /include/linux/i2c
parent9844ce0501b03843c44156d6e36afb80e847c974 (diff)
backlight: new driver for the ADP8860 backlight parts
The ADP8860 combines a programmable backlight LED charge pump driver with automatic phototransistor control. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Diffstat (limited to 'include/linux/i2c')
-rw-r--r--include/linux/i2c/adp8860.h137
1 files changed, 137 insertions, 0 deletions
diff --git a/include/linux/i2c/adp8860.h b/include/linux/i2c/adp8860.h
new file mode 100644
index 00000000000..115514b7176
--- /dev/null
+++ b/include/linux/i2c/adp8860.h
@@ -0,0 +1,137 @@
+/*
+ * Definitions and platform data for Analog Devices
+ * Backlight drivers ADP8860
+ *
+ * Copyright 2009-2010 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __LINUX_I2C_ADP8860_H
+#define __LINUX_I2C_ADP8860_H
+
+#include <linux/leds.h>
+#include <linux/types.h>
+
+#define ID_ADP8860 8860
+
+#define ADP8860_MAX_BRIGHTNESS 0x7F
+#define FLAG_OFFT_SHIFT 8
+
+/*
+ * LEDs subdevice platform data
+ */
+
+#define ADP8860_LED_DIS_BLINK (0 << FLAG_OFFT_SHIFT)
+#define ADP8860_LED_OFFT_600ms (1 << FLAG_OFFT_SHIFT)
+#define ADP8860_LED_OFFT_1200ms (2 << FLAG_OFFT_SHIFT)
+#define ADP8860_LED_OFFT_1800ms (3 << FLAG_OFFT_SHIFT)
+
+#define ADP8860_LED_ONT_200ms 0
+#define ADP8860_LED_ONT_600ms 1
+#define ADP8860_LED_ONT_800ms 2
+#define ADP8860_LED_ONT_1200ms 3
+
+#define ADP8860_LED_D7 (7)
+#define ADP8860_LED_D6 (6)
+#define ADP8860_LED_D5 (5)
+#define ADP8860_LED_D4 (4)
+#define ADP8860_LED_D3 (3)
+#define ADP8860_LED_D2 (2)
+#define ADP8860_LED_D1 (1)
+
+/*
+ * Backlight subdevice platform data
+ */
+
+#define ADP8860_BL_D7 (1 << 6)
+#define ADP8860_BL_D6 (1 << 5)
+#define ADP8860_BL_D5 (1 << 4)
+#define ADP8860_BL_D4 (1 << 3)
+#define ADP8860_BL_D3 (1 << 2)
+#define ADP8860_BL_D2 (1 << 1)
+#define ADP8860_BL_D1 (1 << 0)
+
+#define ADP8860_FADE_T_DIS 0 /* Fade Timer Disabled */
+#define ADP8860_FADE_T_300ms 1 /* 0.3 Sec */
+#define ADP8860_FADE_T_600ms 2
+#define ADP8860_FADE_T_900ms 3
+#define ADP8860_FADE_T_1200ms 4
+#define ADP8860_FADE_T_1500ms 5
+#define ADP8860_FADE_T_1800ms 6
+#define ADP8860_FADE_T_2100ms 7
+#define ADP8860_FADE_T_2400ms 8
+#define ADP8860_FADE_T_2700ms 9
+#define ADP8860_FADE_T_3000ms 10
+#define ADP8860_FADE_T_3500ms 11
+#define ADP8860_FADE_T_4000ms 12
+#define ADP8860_FADE_T_4500ms 13
+#define ADP8860_FADE_T_5000ms 14
+#define ADP8860_FADE_T_5500ms 15 /* 5.5 Sec */
+
+#define ADP8860_FADE_LAW_LINEAR 0
+#define ADP8860_FADE_LAW_SQUARE 1
+#define ADP8860_FADE_LAW_CUBIC1 2
+#define ADP8860_FADE_LAW_CUBIC2 3
+
+#define ADP8860_BL_AMBL_FILT_80ms 0 /* Light sensor filter time */
+#define ADP8860_BL_AMBL_FILT_160ms 1
+#define ADP8860_BL_AMBL_FILT_320ms 2
+#define ADP8860_BL_AMBL_FILT_640ms 3
+#define ADP8860_BL_AMBL_FILT_1280ms 4
+#define ADP8860_BL_AMBL_FILT_2560ms 5
+#define ADP8860_BL_AMBL_FILT_5120ms 6
+#define ADP8860_BL_AMBL_FILT_10240ms 7 /* 10.24 sec */
+
+/*
+ * Blacklight current 0..30mA
+ */
+#define ADP8860_BL_CUR_mA(I) ((I * 127) / 30)
+
+/*
+ * L2 comparator current 0..1106uA
+ */
+#define ADP8860_L2_COMP_CURR_uA(I) ((I * 255) / 1106)
+
+/*
+ * L3 comparator current 0..138uA
+ */
+#define ADP8860_L3_COMP_CURR_uA(I) ((I * 255) / 138)
+
+struct adp8860_backlight_platform_data {
+ u8 bl_led_assign; /* 1 = Backlight 0 = Individual LED */
+
+ u8 bl_fade_in; /* Backlight Fade-In Timer */
+ u8 bl_fade_out; /* Backlight Fade-Out Timer */
+ u8 bl_fade_law; /* fade-on/fade-off transfer characteristic */
+
+ u8 en_ambl_sens; /* 1 = enable ambient light sensor */
+ u8 abml_filt; /* Light sensor filter time */
+
+ u8 l1_daylight_max; /* use BL_CUR_mA(I) 0 <= I <= 30 mA */
+ u8 l1_daylight_dim; /* typ = 0, use BL_CUR_mA(I) 0 <= I <= 30 mA */
+ u8 l2_office_max; /* use BL_CUR_mA(I) 0 <= I <= 30 mA */
+ u8 l2_office_dim; /* typ = 0, use BL_CUR_mA(I) 0 <= I <= 30 mA */
+ u8 l3_dark_max; /* use BL_CUR_mA(I) 0 <= I <= 30 mA */
+ u8 l3_dark_dim; /* typ = 0, use BL_CUR_mA(I) 0 <= I <= 30 mA */
+
+ u8 l2_trip; /* use L2_COMP_CURR_uA(I) 0 <= I <= 1106 uA */
+ u8 l2_hyst; /* use L2_COMP_CURR_uA(I) 0 <= I <= 1106 uA */
+ u8 l3_trip; /* use L3_COMP_CURR_uA(I) 0 <= I <= 551 uA */
+ u8 l3_hyst; /* use L3_COMP_CURR_uA(I) 0 <= I <= 551 uA */
+
+ /**
+ * Independent Current Sinks / LEDS
+ * Sinks not assigned to the Backlight can be exposed to
+ * user space using the LEDS CLASS interface
+ */
+
+ int num_leds;
+ struct led_info *leds;
+ u8 led_fade_in; /* LED Fade-In Timer */
+ u8 led_fade_out; /* LED Fade-Out Timer */
+ u8 led_fade_law; /* fade-on/fade-off transfer characteristic */
+ u8 led_on_time;
+};
+
+#endif /* __LINUX_I2C_ADP8860_H */