// SPDX-License-Identifier: GPL-2.0-only /* * FXL6408 GPIO driver * * Copyright 2023 Toradex * * Author: Emanuele Ghidoli <[email protected]> */ #include <linux/err.h> #include <linux/gpio/regmap.h> #include <linux/i2c.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/regmap.h> #define FXL6408_REG_DEVICE_ID … #define FXL6408_MF_FAIRCHILD … #define FXL6408_MF_SHIFT … /* Bits set here indicate that the GPIO is an output. */ #define FXL6408_REG_IO_DIR … /* * Bits set here, when the corresponding bit of IO_DIR is set, drive * the output high instead of low. */ #define FXL6408_REG_OUTPUT … /* Bits here make the output High-Z, instead of the OUTPUT value. */ #define FXL6408_REG_OUTPUT_HIGH_Z … /* Returns the current status (1 = HIGH) of the input pins. */ #define FXL6408_REG_INPUT_STATUS … /* * Return the current interrupt status * This bit is HIGH if input GPIO != default state (register 09h). * The flag is cleared after being read (bit returns to 0). * The input must go back to default state and change again before this flag is raised again. */ #define FXL6408_REG_INT_STS … #define FXL6408_NGPIO … static const struct regmap_range rd_range[] = …; static const struct regmap_range wr_range[] = …; static const struct regmap_range volatile_range[] = …; static const struct regmap_access_table rd_table = …; static const struct regmap_access_table wr_table = …; static const struct regmap_access_table volatile_table = …; static const struct regmap_config regmap = …; static int fxl6408_identify(struct device *dev, struct regmap *regmap) { … } static int fxl6408_probe(struct i2c_client *client) { … } static const __maybe_unused struct of_device_id fxl6408_dt_ids[] = …; MODULE_DEVICE_TABLE(of, fxl6408_dt_ids); static const struct i2c_device_id fxl6408_id[] = …; MODULE_DEVICE_TABLE(i2c, fxl6408_id); static struct i2c_driver fxl6408_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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