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8fbce8efe1
Add fwnode support to the lm3630a driver and optionally allow configuring the label, default brightness level, and maximum brightness level. The two outputs can be controlled by bank A and B independently or bank A can control both outputs. If the platform data was not configured, then the driver defaults to enabling both banks. This patch changes the default value to disable both banks before parsing the firmware node so that just a single bank can be enabled if desired. There are no in-tree users of this driver. Driver was tested on a LG Nexus 5 (hammerhead) phone. Signed-off-by: Brian Masney <masneyb@onstation.org> Reviewed-by: Dan Murphy <dmurphy@ti.com> Acked-by: Daniel Thompson <daniel.thompson@linaro.org> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Lee Jones <lee.jones@linaro.org>
70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
/*
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* Simple driver for Texas Instruments LM3630A LED Flash driver chip
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* Copyright (C) 2012 Texas Instruments
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#ifndef __LINUX_LM3630A_H
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#define __LINUX_LM3630A_H
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#define LM3630A_NAME "lm3630a_bl"
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enum lm3630a_pwm_ctrl {
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LM3630A_PWM_DISABLE = 0x00,
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LM3630A_PWM_BANK_A,
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LM3630A_PWM_BANK_B,
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LM3630A_PWM_BANK_ALL,
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LM3630A_PWM_BANK_A_ACT_LOW = 0x05,
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LM3630A_PWM_BANK_B_ACT_LOW,
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LM3630A_PWM_BANK_ALL_ACT_LOW,
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};
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enum lm3630a_leda_ctrl {
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LM3630A_LEDA_DISABLE = 0x00,
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LM3630A_LEDA_ENABLE = 0x04,
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LM3630A_LEDA_ENABLE_LINEAR = 0x14,
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};
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enum lm3630a_ledb_ctrl {
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LM3630A_LEDB_DISABLE = 0x00,
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LM3630A_LEDB_ON_A = 0x01,
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LM3630A_LEDB_ENABLE = 0x02,
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LM3630A_LEDB_ENABLE_LINEAR = 0x0A,
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};
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#define LM3630A_MAX_BRIGHTNESS 255
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/*
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*@leda_label : optional led a label.
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*@leda_init_brt : led a init brightness. 4~255
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*@leda_max_brt : led a max brightness. 4~255
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*@leda_ctrl : led a disable, enable linear, enable exponential
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*@ledb_label : optional led b label.
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*@ledb_init_brt : led b init brightness. 4~255
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*@ledb_max_brt : led b max brightness. 4~255
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*@ledb_ctrl : led b disable, enable linear, enable exponential
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*@pwm_period : pwm period
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*@pwm_ctrl : pwm disable, bank a or b, active high or low
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*/
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struct lm3630a_platform_data {
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/* led a config. */
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const char *leda_label;
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int leda_init_brt;
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int leda_max_brt;
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enum lm3630a_leda_ctrl leda_ctrl;
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/* led b config. */
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const char *ledb_label;
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int ledb_init_brt;
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int ledb_max_brt;
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enum lm3630a_ledb_ctrl ledb_ctrl;
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/* pwm config. */
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unsigned int pwm_period;
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enum lm3630a_pwm_ctrl pwm_ctrl;
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};
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#endif /* __LINUX_LM3630A_H */
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