max5395的linux下的驱动

#include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/err.h> #include <linux/string.h> #include <linux/delay.h> #include <linux/i2c.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <linux/of.h> #include <linux/regulator/of_regulator.h> #include <linux/gpio.h> #include <linux/of_gpio.h> #include <linux/regmap.h> #include <linux/of_address.h> #include <linux/of_irq.h> #include <asm/io.h> //#include <comip/comip-regs.h> //#include <comip/comip_devinfo.h> #define MAX5395_I2C_ADDR (0x2B) //#define REG_WIPER (0x00) #define REG_CONFIG (0x80) #define MAX5395_QP (1 << 7)//CHARGE_PUMP_STATUS #define MAX5395_HSW (1 << 4) #define MAX5395_LSW (1 << 3) #define MAX5395_WSW (1 << 2) #define MAX5395_TSEL (0) /*00-wiper is at wiper register,01-wiper is at 00,10-wiper is at0x80,11-wiper is at 0xff*/ /*write cmd*/ #define REG_WIPER (0x00) /*set the wiper position*/ #define REG_SD_CLR (0x80) /*clear shut down condition*/ #define REG_SD_H_WREG (0x90) /*open terminal H and shut down*/ #define REG_SD_H_ZERO (0x91) /*set wiper to 0,open H, shut down*/ #define REG_SD_H_MID (0x92) /*set wiper to 0x80,open H, shut down*/ #define REG_SD_H_FULL (0x93) /*set wiper to 0xff,open H, shut down*/ #define REG_SD_L_WREG (0x88) /*open L, shut down*/ #define REG_SD_L_ZERO (0x89) /*set wiper to 0,open L, shut down*/ #define REG_SD_L_MID (0x8A) /*set wiper to 0x80,open L, shut down*/ #define REG_SD_L_FULL (0x8B) /*set wiper to 0xff,open L, shut down*/ #define REG_SD_W (0x84) /*open W, shut down*/ #define REG_QP_OFF (0xA0) /*charge pump off*/ #define REG_QP_ON (0xA1) /*charge pump on*/ #define REG_RST (0xC0) /*reset to power on defaults*/ struct max5395 { struct i2c_client *client; struct device *dev; struct regulator_dev *regulator; struct regulator_init_data *init_data; struct regmap *regmap; struct pinctrl *pinctrl; struct pinctrl_state *i2c_state; int id; struct attribute_group *attr_grp; }; static struct regmap_config max5395_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = 0xf, }; static ssize_t wiper_show(struct device *dev, struct device_attribute *attr, char *buf) { int val; struct max5395 *pdata = dev_get_drvdata(dev); regmap_read(pdata->regmap, REG_WIPER, &val); return sprintf(buf, "%d\n", val); } static ssize_t wiper_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { struct max5395 *pdata = dev_get_drvdata(dev); u8 val; unsigned int data; int ret = kstrtou8(buf, 10, &val); data = val; ret = regmap_write(pdata->regmap, REG_WIPER, data); return len; } static ssize_t config_show(struct device *dev, struct device_attribute *attr, char *buf) { int val; struct max5395 *pdata = dev_get_drvdata(dev); regmap_read(pdata->regmap, REG_CONFIG, &val); return sprintf(buf, "%d\n", val); } static ssize_t sd_clr_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { unsigned int val = 0; struct max5395 *pdata = dev_get_drvdata(dev); regmap_write(pdata->regmap, REG_SD_CLR, val); return len; } static ssize_t sd_h_wreg_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { unsigned int val = 0; struct max5395 *pdata = dev_get_drvdata(dev); regmap_write(pdata->regmap, REG_SD_H_WREG, val); return len; } static ssize_t sd_h_zero_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { unsigned int val = 0; struct max5395 *pdata = dev_get_drvdata(dev); regmap_write(pdata->regmap, REG_SD_H_ZERO, val); return len; } static ssize_t sd_h_mid_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { unsigned int val = 0; struct max5395 *pdata = dev_get_drvdata(dev); regmap_write(pdata->regmap, REG_SD_H_MID, val); return len; } static ssize_t sd_h_full_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { unsigned int val = 0; struct max5395 *pdata = dev_get_drvdata(dev); regmap_write(pdata->regmap, REG_SD_H_FULL, val); return len; } static ssize_t sd_l_wreg_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { unsigned int val = 0; struct max5395 *pdata = dev_get_drvdata(dev); regmap_write(pdata->regmap, REG_SD_L_WREG, val); return len; } static ssize_t sd_l_zero_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { unsigned int val = 0; struct max5395 *pdata = dev_get_drvdata(dev); regmap_write(pdata->regmap, REG_SD_L_ZERO, val); return len; } static ssize_t sd_l_mid_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { unsigned int val = 0; struct max5395 *pdata = dev_get_drvdata(dev); regmap_write(pdata->regmap, REG_SD_L_MID, val); return len; } static ssize_t sd_l_full_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { unsigned int val = 0; struct max5395 *pdata = dev_get_drvdata(dev); regmap_write(pdata->regmap, REG_SD_L_FULL, val); return len; } static ssize_t sd_w_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { unsigned int val = 0; struct max5395 *pdata = dev_get_drvdata(dev); regmap_write(pdata->regmap, REG_SD_W, val); return len; } static ssize_t sd_qp_off_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { unsigned int val = 0; struct max5395 *pdata = dev_get_drvdata(dev); regmap_write(pdata->regmap, REG_QP_OFF, val); return len; } static ssize_t sd_qp_on_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { unsigned int val = 0; struct max5395 *pdata = dev_get_drvdata(dev); regmap_write(pdata->regmap, REG_QP_ON, val); return len; } static ssize_t sd_rst_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { unsigned int val = 0; struct max5395 *pdata = dev_get_drvdata(dev); regmap_write(pdata->regmap, REG_RST, val); return len; } static DEVICE_ATTR(wiper, S_IRUGO | S_IWUSR, wiper_show, wiper_store); static DEVICE_ATTR(config, S_IRUGO | S_IWUSR, config_show, NULL); static DEVICE_ATTR(sd_clr, S_IRUGO | S_IWUSR, NULL, sd_clr_store); static DEVICE_ATTR(sd_h_wreg, S_IRUGO | S_IWUSR, NULL, sd_h_wreg_store); static DEVICE_ATTR(sd_h_zero, S_IRUGO | S_IWUSR, NULL, sd_h_zero_store); static DEVICE_ATTR(sd_h_mid, S_IRUGO | S_IWUSR, NULL, sd_h_mid_store); static DEVICE_ATTR(sd_h_full, S_IRUGO | S_IWUSR, NULL, sd_h_full_store); static DEVICE_ATTR(sd_l_wreg, S_IRUGO | S_IWUSR, NULL, sd_l_wreg_store); static DEVICE_ATTR(sd_l_zero, S_IRUGO | S_IWUSR, NULL, sd_l_zero_store); static DEVICE_ATTR(sd_l_mid, S_IRUGO | S_IWUSR, NULL, sd_l_mid_store); static DEVICE_ATTR(sd_l_full, S_IRUGO | S_IWUSR, NULL, sd_l_full_store); static DEVICE_ATTR(sd_w, S_IRUGO | S_IWUSR, NULL, sd_w_store); static DEVICE_ATTR(sd_qp_off, S_IRUGO | S_IWUSR, NULL, sd_qp_off_store); static DEVICE_ATTR(sd_qp_on, S_IRUGO | S_IWUSR, NULL, sd_qp_on_store); static DEVICE_ATTR(sd_rst, S_IRUGO | S_IWUSR, NULL, sd_rst_store); static struct attribute *max5395_attributes[] = { &dev_attr_wiper.attr, &dev_attr_config.attr, &dev_attr_sd_clr.attr, &dev_attr_sd_h_wreg.attr, &dev_attr_sd_h_zero.attr, &dev_attr_sd_h_mid.attr, &dev_attr_sd_h_full.attr, &dev_attr_sd_l_wreg.attr, &dev_attr_sd_l_zero.attr, &dev_attr_sd_l_mid.attr, &dev_attr_sd_l_full.attr, &dev_attr_sd_w.attr, &dev_attr_sd_qp_off.attr, &dev_attr_sd_qp_on.attr, &dev_attr_sd_rst.attr, NULL, }; static struct attribute_group max5395_attr_group = { .attrs = max5395_attributes, }; static int max5395_parse_dt(struct device *dev, struct max5395 *max5395) { int ret = 0; if (max5395->id == 0) { return 0; } // max5395->pinctrl = devm_pinctrl_get(dev); // if (IS_ERR(max5395->pinctrl)