cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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bmp280-regmap.c (1777B)

      1// SPDX-License-Identifier: GPL-2.0
      2#include <linux/device.h>
      3#include <linux/module.h>
      4#include <linux/regmap.h>
      5
      6#include "bmp280.h"
      7
      8static bool bmp180_is_writeable_reg(struct device *dev, unsigned int reg)
      9{
     10	switch (reg) {
     11	case BMP280_REG_CTRL_MEAS:
     12	case BMP280_REG_RESET:
     13		return true;
     14	default:
     15		return false;
     16	}
     17}
     18
     19static bool bmp180_is_volatile_reg(struct device *dev, unsigned int reg)
     20{
     21	switch (reg) {
     22	case BMP180_REG_OUT_XLSB:
     23	case BMP180_REG_OUT_LSB:
     24	case BMP180_REG_OUT_MSB:
     25	case BMP280_REG_CTRL_MEAS:
     26		return true;
     27	default:
     28		return false;
     29	}
     30}
     31
     32const struct regmap_config bmp180_regmap_config = {
     33	.reg_bits = 8,
     34	.val_bits = 8,
     35
     36	.max_register = BMP180_REG_OUT_XLSB,
     37	.cache_type = REGCACHE_RBTREE,
     38
     39	.writeable_reg = bmp180_is_writeable_reg,
     40	.volatile_reg = bmp180_is_volatile_reg,
     41};
     42EXPORT_SYMBOL(bmp180_regmap_config);
     43
     44static bool bmp280_is_writeable_reg(struct device *dev, unsigned int reg)
     45{
     46	switch (reg) {
     47	case BMP280_REG_CONFIG:
     48	case BMP280_REG_CTRL_HUMIDITY:
     49	case BMP280_REG_CTRL_MEAS:
     50	case BMP280_REG_RESET:
     51		return true;
     52	default:
     53		return false;
     54	}
     55}
     56
     57static bool bmp280_is_volatile_reg(struct device *dev, unsigned int reg)
     58{
     59	switch (reg) {
     60	case BMP280_REG_HUMIDITY_LSB:
     61	case BMP280_REG_HUMIDITY_MSB:
     62	case BMP280_REG_TEMP_XLSB:
     63	case BMP280_REG_TEMP_LSB:
     64	case BMP280_REG_TEMP_MSB:
     65	case BMP280_REG_PRESS_XLSB:
     66	case BMP280_REG_PRESS_LSB:
     67	case BMP280_REG_PRESS_MSB:
     68	case BMP280_REG_STATUS:
     69		return true;
     70	default:
     71		return false;
     72	}
     73}
     74
     75const struct regmap_config bmp280_regmap_config = {
     76	.reg_bits = 8,
     77	.val_bits = 8,
     78
     79	.max_register = BMP280_REG_HUMIDITY_LSB,
     80	.cache_type = REGCACHE_RBTREE,
     81
     82	.writeable_reg = bmp280_is_writeable_reg,
     83	.volatile_reg = bmp280_is_volatile_reg,
     84};
     85EXPORT_SYMBOL(bmp280_regmap_config);