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2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
115 lines
2.7 KiB
C
115 lines
2.7 KiB
C
/*
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* TI/National Semiconductor LP3943 Device
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*
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* Copyright 2013 Texas Instruments
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*
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* Author: Milo Kim <milo.kim@ti.com>
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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 __MFD_LP3943_H__
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#define __MFD_LP3943_H__
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#include <linux/gpio.h>
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#include <linux/pwm.h>
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#include <linux/regmap.h>
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/* Registers */
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#define LP3943_REG_GPIO_A 0x00
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#define LP3943_REG_GPIO_B 0x01
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#define LP3943_REG_PRESCALE0 0x02
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#define LP3943_REG_PWM0 0x03
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#define LP3943_REG_PRESCALE1 0x04
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#define LP3943_REG_PWM1 0x05
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#define LP3943_REG_MUX0 0x06
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#define LP3943_REG_MUX1 0x07
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#define LP3943_REG_MUX2 0x08
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#define LP3943_REG_MUX3 0x09
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/* Bit description for LP3943_REG_MUX0 ~ 3 */
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#define LP3943_GPIO_IN 0x00
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#define LP3943_GPIO_OUT_HIGH 0x00
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#define LP3943_GPIO_OUT_LOW 0x01
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#define LP3943_DIM_PWM0 0x02
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#define LP3943_DIM_PWM1 0x03
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#define LP3943_NUM_PWMS 2
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enum lp3943_pwm_output {
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LP3943_PWM_OUT0,
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LP3943_PWM_OUT1,
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LP3943_PWM_OUT2,
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LP3943_PWM_OUT3,
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LP3943_PWM_OUT4,
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LP3943_PWM_OUT5,
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LP3943_PWM_OUT6,
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LP3943_PWM_OUT7,
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LP3943_PWM_OUT8,
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LP3943_PWM_OUT9,
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LP3943_PWM_OUT10,
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LP3943_PWM_OUT11,
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LP3943_PWM_OUT12,
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LP3943_PWM_OUT13,
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LP3943_PWM_OUT14,
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LP3943_PWM_OUT15,
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};
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/*
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* struct lp3943_pwm_map
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* @output: Output pins which are mapped to each PWM channel
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* @num_outputs: Number of outputs
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*/
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struct lp3943_pwm_map {
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enum lp3943_pwm_output *output;
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int num_outputs;
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};
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/*
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* struct lp3943_platform_data
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* @pwms: Output channel definitions for PWM channel 0 and 1
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*/
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struct lp3943_platform_data {
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struct lp3943_pwm_map *pwms[LP3943_NUM_PWMS];
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};
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/*
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* struct lp3943_reg_cfg
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* @reg: Register address
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* @mask: Register bit mask to be updated
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* @shift: Register bit shift
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*/
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struct lp3943_reg_cfg {
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u8 reg;
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u8 mask;
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u8 shift;
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};
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/*
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* struct lp3943
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* @dev: Parent device pointer
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* @regmap: Used for I2C communication on accessing registers
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* @pdata: LP3943 platform specific data
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* @mux_cfg: Register configuration for pin MUX
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* @pin_used: Bit mask for output pin used.
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* This bitmask is used for pin assignment management.
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* 1 = pin used, 0 = available.
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* Only LSB 16 bits are used, but it is unsigned long type
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* for atomic bitwise operations.
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*/
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struct lp3943 {
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struct device *dev;
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struct regmap *regmap;
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struct lp3943_platform_data *pdata;
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const struct lp3943_reg_cfg *mux_cfg;
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unsigned long pin_used;
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};
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int lp3943_read_byte(struct lp3943 *lp3943, u8 reg, u8 *read);
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int lp3943_write_byte(struct lp3943 *lp3943, u8 reg, u8 data);
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int lp3943_update_bits(struct lp3943 *lp3943, u8 reg, u8 mask, u8 data);
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#endif
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