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dc0c386e09
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230714174731.4059811-1-robh@kernel.org Signed-off-by: Lee Jones <lee@kernel.org>
142 lines
3 KiB
C
142 lines
3 KiB
C
/*
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* tps6507x.c -- TPS6507x chip family multi-function driver
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*
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* Copyright (c) 2010 RidgeRun (todd.fischer@ridgerun.com)
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*
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* Author: Todd Fischer
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* todd.fischer@ridgerun.com
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*
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* Credits:
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*
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* Using code from wm831x-*.c, wm8400-core, Wolfson Microelectronics PLC.
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*
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* For licencing details see kernel-base/COPYING
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*
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/i2c.h>
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#include <linux/of.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/tps6507x.h>
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static const struct mfd_cell tps6507x_devs[] = {
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{
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.name = "tps6507x-pmic",
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},
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{
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.name = "tps6507x-ts",
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},
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};
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static int tps6507x_i2c_read_device(struct tps6507x_dev *tps6507x, char reg,
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int bytes, void *dest)
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{
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struct i2c_client *i2c = tps6507x->i2c_client;
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struct i2c_msg xfer[2];
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int ret;
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/* Write register */
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xfer[0].addr = i2c->addr;
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xfer[0].flags = 0;
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xfer[0].len = 1;
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xfer[0].buf = ®
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/* Read data */
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xfer[1].addr = i2c->addr;
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xfer[1].flags = I2C_M_RD;
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xfer[1].len = bytes;
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xfer[1].buf = dest;
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ret = i2c_transfer(i2c->adapter, xfer, 2);
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if (ret == 2)
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ret = 0;
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else if (ret >= 0)
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ret = -EIO;
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return ret;
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}
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static int tps6507x_i2c_write_device(struct tps6507x_dev *tps6507x, char reg,
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int bytes, void *src)
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{
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struct i2c_client *i2c = tps6507x->i2c_client;
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/* we add 1 byte for device register */
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u8 msg[TPS6507X_MAX_REGISTER + 1];
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int ret;
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if (bytes > TPS6507X_MAX_REGISTER)
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return -EINVAL;
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msg[0] = reg;
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memcpy(&msg[1], src, bytes);
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ret = i2c_master_send(i2c, msg, bytes + 1);
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if (ret < 0)
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return ret;
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if (ret != bytes + 1)
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return -EIO;
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return 0;
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}
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static int tps6507x_i2c_probe(struct i2c_client *i2c)
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{
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struct tps6507x_dev *tps6507x;
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tps6507x = devm_kzalloc(&i2c->dev, sizeof(struct tps6507x_dev),
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GFP_KERNEL);
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if (tps6507x == NULL)
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return -ENOMEM;
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i2c_set_clientdata(i2c, tps6507x);
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tps6507x->dev = &i2c->dev;
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tps6507x->i2c_client = i2c;
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tps6507x->read_dev = tps6507x_i2c_read_device;
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tps6507x->write_dev = tps6507x_i2c_write_device;
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return devm_mfd_add_devices(tps6507x->dev, -1, tps6507x_devs,
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ARRAY_SIZE(tps6507x_devs), NULL, 0, NULL);
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}
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static const struct i2c_device_id tps6507x_i2c_id[] = {
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{ "tps6507x", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, tps6507x_i2c_id);
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#ifdef CONFIG_OF
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static const struct of_device_id tps6507x_of_match[] = {
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{.compatible = "ti,tps6507x", },
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{},
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};
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MODULE_DEVICE_TABLE(of, tps6507x_of_match);
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#endif
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static struct i2c_driver tps6507x_i2c_driver = {
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.driver = {
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.name = "tps6507x",
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.of_match_table = of_match_ptr(tps6507x_of_match),
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},
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.probe = tps6507x_i2c_probe,
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.id_table = tps6507x_i2c_id,
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};
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static int __init tps6507x_i2c_init(void)
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{
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return i2c_add_driver(&tps6507x_i2c_driver);
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}
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/* init early so consumer devices can complete system boot */
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subsys_initcall(tps6507x_i2c_init);
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static void __exit tps6507x_i2c_exit(void)
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{
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i2c_del_driver(&tps6507x_i2c_driver);
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}
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module_exit(tps6507x_i2c_exit);
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MODULE_DESCRIPTION("TPS6507x chip family multi-function driver");
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MODULE_LICENSE("GPL");
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