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LP5562 can drive up to 4 channels, RGB and White. LEDs can be controlled directly via the led class control interface. LP55xx common driver LP5562 is one of LP55xx family device, so LP55xx common code are used. On the other hand, chip specific configuration is defined in the structure 'lp55xx_device_config' LED pattern data LP5562 has also internal program memory which is used for running various LED patterns. LP5562 driver supports the firmware interface and the predefined pattern data as well. LP5562 device attributes: 'led_pattern' and 'engine_mux' A 'led_pattern' is an index code which runs the predefined pattern data. And 'engine_mux' is updated with the firmware interface is activated. Detailed description has been updated in the documentation files, 'leds-lp55xx.txt' and 'leds-lp5562.txt'. Changes on the header file LP5562 configurable definitions are added. Pattern RGB data is fixed as constant value. (No side effect on other devices, LP5521 or LP5523.) (cooloney@gmail.com: remove redundant mutex_unlock(). Reported by Dan Carpenter <dan.carpenter@oracle.com>) Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com> Signed-off-by: Bryan Wu <cooloney@gmail.com>
95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
/*
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* LP55XX Platform Data Header
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*
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* Copyright (C) 2012 Texas Instruments
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*
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* Author: Milo(Woogyom) Kim <milo.kim@ti.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* Derived from leds-lp5521.h, leds-lp5523.h
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*/
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#ifndef _LEDS_LP55XX_H
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#define _LEDS_LP55XX_H
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/* Clock configuration */
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#define LP55XX_CLOCK_AUTO 0
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#define LP55XX_CLOCK_INT 1
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#define LP55XX_CLOCK_EXT 2
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/* Bits in LP5521 CONFIG register. 'update_config' in lp55xx_platform_data */
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#define LP5521_PWM_HF 0x40 /* PWM: 0 = 256Hz, 1 = 558Hz */
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#define LP5521_PWRSAVE_EN 0x20 /* 1 = Power save mode */
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#define LP5521_CP_MODE_OFF 0 /* Charge pump (CP) off */
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#define LP5521_CP_MODE_BYPASS 8 /* CP forced to bypass mode */
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#define LP5521_CP_MODE_1X5 0x10 /* CP forced to 1.5x mode */
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#define LP5521_CP_MODE_AUTO 0x18 /* Automatic mode selection */
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#define LP5521_R_TO_BATT 4 /* R out: 0 = CP, 1 = Vbat */
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#define LP5521_CLK_SRC_EXT 0 /* Ext-clk source (CLK_32K) */
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#define LP5521_CLK_INT 1 /* Internal clock */
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#define LP5521_CLK_AUTO 2 /* Automatic clock selection */
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/* Bits in LP5562 CONFIG register */
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#define LP5562_PWM_HF LP5521_PWM_HF
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#define LP5562_PWRSAVE_EN LP5521_PWRSAVE_EN
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#define LP5562_CLK_SRC_EXT LP5521_CLK_SRC_EXT
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#define LP5562_CLK_INT LP5521_CLK_INT
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#define LP5562_CLK_AUTO LP5521_CLK_AUTO
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struct lp55xx_led_config {
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const char *name;
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u8 chan_nr;
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u8 led_current; /* mA x10, 0 if led is not connected */
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u8 max_current;
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};
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struct lp55xx_predef_pattern {
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const u8 *r;
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const u8 *g;
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const u8 *b;
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u8 size_r;
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u8 size_g;
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u8 size_b;
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};
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/*
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* struct lp55xx_platform_data
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* @led_config : Configurable led class device
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* @num_channels : Number of LED channels
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* @label : Used for naming LEDs
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* @clock_mode : Input clock mode. LP55XX_CLOCK_AUTO or _INT or _EXT
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* @setup_resources : Platform specific function before enabling the chip
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* @release_resources : Platform specific function after disabling the chip
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* @enable : EN pin control by platform side
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* @patterns : Predefined pattern data for RGB channels
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* @num_patterns : Number of patterns
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* @update_config : Value of CONFIG register
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*/
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struct lp55xx_platform_data {
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/* LED channel configuration */
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struct lp55xx_led_config *led_config;
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u8 num_channels;
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const char *label;
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/* Clock configuration */
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u8 clock_mode;
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/* Platform specific functions */
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int (*setup_resources)(void);
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void (*release_resources)(void);
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void (*enable)(bool state);
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/* Predefined pattern data */
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struct lp55xx_predef_pattern *patterns;
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unsigned int num_patterns;
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/* _CONFIG register */
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u8 update_config;
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};
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#endif /* _LEDS_LP55XX_H */
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