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
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
// SPDX-License-Identifier: GPL-2.0+
/*
* TLMM driver for Qualcomm IPQ40xx
*
* (C) Copyright 2018 Ramon Fried <ramon.fried@gmail.com>
*
* Copyright (c) 2020 Sartura Ltd.
*
* Author: Robert Marko <robert.marko@sartura.hr>
*
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <asm/io.h>
#include <dm/pinctrl.h>
#include <linux/bitops.h>
#include "pinctrl-snapdragon.h"
struct msm_pinctrl_priv {
phys_addr_t base;
struct msm_pinctrl_data *data;
};
#define GPIO_CONFIG_OFFSET(x) ((x) * 0x1000)
#define TLMM_GPIO_PULL_MASK GENMASK(1, 0)
#define TLMM_FUNC_SEL_MASK GENMASK(5, 2)
#define TLMM_DRV_STRENGTH_MASK GENMASK(8, 6)
#define TLMM_GPIO_DISABLE BIT(9)
static const struct pinconf_param msm_conf_params[] = {
{ "drive-strength", PIN_CONFIG_DRIVE_STRENGTH, 2 },
{ "bias-disable", PIN_CONFIG_BIAS_DISABLE, 0 },
{ "bias-pull-up", PIN_CONFIG_BIAS_PULL_UP, 2 },
};
static int msm_get_functions_count(struct udevice *dev)
{
struct msm_pinctrl_priv *priv = dev_get_priv(dev);
return priv->data->functions_count;
}
static int msm_get_pins_count(struct udevice *dev)
{
struct msm_pinctrl_priv *priv = dev_get_priv(dev);
return priv->data->pin_count;
}
static const char *msm_get_function_name(struct udevice *dev,
unsigned int selector)
{
struct msm_pinctrl_priv *priv = dev_get_priv(dev);
return priv->data->get_function_name(dev, selector);
}
static int msm_pinctrl_probe(struct udevice *dev)
{
struct msm_pinctrl_priv *priv = dev_get_priv(dev);
priv->base = devfdt_get_addr(dev);
priv->data = (struct msm_pinctrl_data *)dev->driver_data;
return priv->base == FDT_ADDR_T_NONE ? -EINVAL : 0;
}
static const char *msm_get_pin_name(struct udevice *dev, unsigned int selector)
{
struct msm_pinctrl_priv *priv = dev_get_priv(dev);
return priv->data->get_pin_name(dev, selector);
}
static int msm_pinmux_set(struct udevice *dev, unsigned int pin_selector,
unsigned int func_selector)
{
struct msm_pinctrl_priv *priv = dev_get_priv(dev);
clrsetbits_le32(priv->base + GPIO_CONFIG_OFFSET(pin_selector),
TLMM_FUNC_SEL_MASK | TLMM_GPIO_DISABLE,
priv->data->get_function_mux(func_selector) << 2);
return 0;
}
static int msm_pinconf_set(struct udevice *dev, unsigned int pin_selector,
unsigned int param, unsigned int argument)
{
struct msm_pinctrl_priv *priv = dev_get_priv(dev);
switch (param) {
case PIN_CONFIG_DRIVE_STRENGTH:
clrsetbits_le32(priv->base + GPIO_CONFIG_OFFSET(pin_selector),
TLMM_DRV_STRENGTH_MASK, argument << 6);
break;
case PIN_CONFIG_BIAS_DISABLE:
clrbits_le32(priv->base + GPIO_CONFIG_OFFSET(pin_selector),
TLMM_GPIO_PULL_MASK);
break;
case PIN_CONFIG_BIAS_PULL_UP:
clrsetbits_le32(priv->base + GPIO_CONFIG_OFFSET(pin_selector),
TLMM_GPIO_PULL_MASK, argument);
break;
default:
return 0;
}
return 0;
}
static struct pinctrl_ops msm_pinctrl_ops = {
.get_pins_count = msm_get_pins_count,
.get_pin_name = msm_get_pin_name,
.set_state = pinctrl_generic_set_state,
.pinmux_set = msm_pinmux_set,
.pinconf_num_params = ARRAY_SIZE(msm_conf_params),
.pinconf_params = msm_conf_params,
.pinconf_set = msm_pinconf_set,
.get_functions_count = msm_get_functions_count,
.get_function_name = msm_get_function_name,
};
static const struct udevice_id msm_pinctrl_ids[] = {
{ .compatible = "qcom,tlmm-ipq4019", .data = (ulong)&ipq4019_data },
{ }
};
U_BOOT_DRIVER(pinctrl_snapdraon) = {
.name = "pinctrl_msm",
.id = UCLASS_PINCTRL,
.of_match = msm_pinctrl_ids,
.priv_auto_alloc_size = sizeof(struct msm_pinctrl_priv),
.ops = &msm_pinctrl_ops,
.probe = msm_pinctrl_probe,
};
|
