blob: 4518c05d46859d70e1c5426ad9c0a2bb346b970f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Pinctrl driver for Nexell SoCs
* (C) Copyright 2016 Nexell
* Bongyu, KOO <freestyle@nexell.co.kr>
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <asm/io.h>
#include "pinctrl-nexell.h"
#include "pinctrl-s5pxx18.h"
DECLARE_GLOBAL_DATA_PTR;
/* given a pin-name, return the address of pin config registers */
unsigned long pin_to_bank_base(struct udevice *dev, const char *pin_name,
u32 *pin)
{
struct nexell_pinctrl_priv *priv = dev_get_priv(dev);
const struct nexell_pin_ctrl *pin_ctrl = priv->pin_ctrl;
const struct nexell_pin_bank_data *bank_data = pin_ctrl->pin_banks;
u32 nr_banks = pin_ctrl->nr_banks, idx = 0;
char bank[10];
/*
* The format of the pin name is <bank name>-<pin_number>.
* Example: gpioa-4 (gpioa is the bank name and 4 is the pin number)
*/
while (pin_name[idx] != '-') {
bank[idx] = pin_name[idx];
idx++;
}
bank[idx] = '\0';
*pin = (u32)simple_strtoul(&pin_name[++idx], NULL, 10);
/* lookup the pin bank data using the pin bank name */
for (idx = 0; idx < nr_banks; idx++)
if (!strcmp(bank, bank_data[idx].name))
break;
return priv->base + bank_data[idx].offset;
}
int nexell_pinctrl_probe(struct udevice *dev)
{
struct nexell_pinctrl_priv *priv;
fdt_addr_t base;
priv = dev_get_priv(dev);
if (!priv)
return -EINVAL;
base = devfdt_get_addr(dev);
if (base == FDT_ADDR_T_NONE)
return -EINVAL;
priv->base = base;
priv->pin_ctrl = (struct nexell_pin_ctrl *)dev_get_driver_data(dev);
s5pxx18_pinctrl_init(dev);
return 0;
}
|
