• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * (C) Copyright 2016
4  * Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
5  */
6 
7 #include <common.h>
8 #include <i2c.h>
9 #include <fdt_support.h>
10 #include <asm-generic/gpio.h>
11 #include <dm.h>
12 
fdt_disable_by_ofname(void * rw_fdt_blob,char * ofname)13 int fdt_disable_by_ofname(void *rw_fdt_blob, char *ofname)
14 {
15 	int offset = fdt_path_offset(rw_fdt_blob, ofname);
16 
17 	return fdt_status_disabled(rw_fdt_blob, offset);
18 }
19 
dm_i2c_simple_probe(struct udevice * bus,uint chip_addr)20 bool dm_i2c_simple_probe(struct udevice *bus, uint chip_addr)
21 {
22 	struct udevice *dev;
23 
24 	return !dm_i2c_probe(bus, chip_addr, DM_I2C_CHIP_RD_ADDRESS |
25 			     DM_I2C_CHIP_WR_ADDRESS, &dev);
26 }
27 
request_gpio_by_name(struct gpio_desc * gpio,const char * gpio_dev_name,uint offset,char * gpio_name)28 int request_gpio_by_name(struct gpio_desc *gpio, const char *gpio_dev_name,
29 			 uint offset, char *gpio_name)
30 {
31 	struct udevice *gpio_dev = NULL;
32 
33 	if (uclass_get_device_by_name(UCLASS_GPIO, gpio_dev_name, &gpio_dev))
34 		return 1;
35 
36 	gpio->dev = gpio_dev;
37 	gpio->offset = offset;
38 	gpio->flags = 0;
39 
40 	return dm_gpio_request(gpio, gpio_name);
41 }
42 
43