1// SPDX-License-Identifier: (GPL-2.0 OR MIT)
2/*
3 * Microsemi SoCs pinctrl driver
4 *
5 * Author: <gregory.clement@bootlin.com>
6 * License: Dual MIT/GPL
7 * Copyright (c) 2018 Microsemi Corporation
8 */
9
10#include <common.h>
11#include <config.h>
12#include <dm.h>
13#include <dm/device-internal.h>
14#include <dm/lists.h>
15#include <dm/pinctrl.h>
16#include <dm/root.h>
17#include <errno.h>
18#include <fdtdec.h>
19#include <linux/io.h>
20#include <asm/gpio.h>
21#include <asm/system.h>
22#include "mscc-common.h"
23
24enum {
25	FUNC_NONE,
26	FUNC_GPIO,
27	FUNC_SIO,
28	FUNC_TACHO,
29	FUNC_TWI,
30	FUNC_PHY_LED,
31	FUNC_EXT_IRQ,
32	FUNC_SFP,
33	FUNC_SI,
34	FUNC_PWM,
35	FUNC_UART,
36	FUNC_MAX
37};
38
39static char * const luton_function_names[] = {
40	[FUNC_NONE]		= "none",
41	[FUNC_GPIO]		= "gpio",
42	[FUNC_SIO]		= "sio",
43	[FUNC_TACHO]		= "tacho",
44	[FUNC_TWI]		= "twi",
45	[FUNC_PHY_LED]		= "phy_led",
46	[FUNC_EXT_IRQ]		= "ext_irq",
47	[FUNC_SFP]		= "sfp",
48	[FUNC_SI]		= "si",
49	[FUNC_PWM]		= "pwm",
50	[FUNC_UART]		= "uart",
51};
52
53MSCC_P(0,  SIO,       NONE,      NONE);
54MSCC_P(1,  SIO,       NONE,      NONE);
55MSCC_P(2,  SIO,       NONE,      NONE);
56MSCC_P(3,  SIO,       NONE,      NONE);
57MSCC_P(4,  TACHO,     NONE,      NONE);
58MSCC_P(5,  TWI,       PHY_LED,   NONE);
59MSCC_P(6,  TWI,       PHY_LED,   NONE);
60MSCC_P(7,  NONE,      PHY_LED,   NONE);
61MSCC_P(8,  EXT_IRQ,   PHY_LED,   NONE);
62MSCC_P(9,  EXT_IRQ,   PHY_LED,   NONE);
63MSCC_P(10, SFP,       PHY_LED,   NONE);
64MSCC_P(11, SFP,       PHY_LED,   NONE);
65MSCC_P(12, SFP,       PHY_LED,   NONE);
66MSCC_P(13, SFP,       PHY_LED,   NONE);
67MSCC_P(14, SI,        PHY_LED,   NONE);
68MSCC_P(15, SI,        PHY_LED,   NONE);
69MSCC_P(16, SI,        PHY_LED,   NONE);
70MSCC_P(17, SFP,       PHY_LED,   NONE);
71MSCC_P(18, SFP,       PHY_LED,   NONE);
72MSCC_P(19, SFP,       PHY_LED,   NONE);
73MSCC_P(20, SFP,       PHY_LED,   NONE);
74MSCC_P(21, SFP,       PHY_LED,   NONE);
75MSCC_P(22, SFP,       PHY_LED,   NONE);
76MSCC_P(23, SFP,       PHY_LED,   NONE);
77MSCC_P(24, SFP,       PHY_LED,   NONE);
78MSCC_P(25, SFP,       PHY_LED,   NONE);
79MSCC_P(26, SFP,       PHY_LED,   NONE);
80MSCC_P(27, SFP,       PHY_LED,   NONE);
81MSCC_P(28, SFP,       PHY_LED,   NONE);
82MSCC_P(29, PWM,       NONE,      NONE);
83MSCC_P(30, UART,      NONE,      NONE);
84MSCC_P(31, UART,      NONE,      NONE);
85
86#define LUTON_PIN(n) {						\
87	.name = "GPIO_"#n,					\
88	.drv_data = &mscc_pin_##n				\
89}
90
91static const struct mscc_pin_data luton_pins[] = {
92	LUTON_PIN(0),
93	LUTON_PIN(1),
94	LUTON_PIN(2),
95	LUTON_PIN(3),
96	LUTON_PIN(4),
97	LUTON_PIN(5),
98	LUTON_PIN(6),
99	LUTON_PIN(7),
100	LUTON_PIN(8),
101	LUTON_PIN(9),
102	LUTON_PIN(10),
103	LUTON_PIN(11),
104	LUTON_PIN(12),
105	LUTON_PIN(13),
106	LUTON_PIN(14),
107	LUTON_PIN(15),
108	LUTON_PIN(16),
109	LUTON_PIN(17),
110	LUTON_PIN(18),
111	LUTON_PIN(19),
112	LUTON_PIN(20),
113	LUTON_PIN(21),
114	LUTON_PIN(22),
115	LUTON_PIN(23),
116	LUTON_PIN(24),
117	LUTON_PIN(25),
118	LUTON_PIN(26),
119	LUTON_PIN(27),
120	LUTON_PIN(28),
121	LUTON_PIN(29),
122	LUTON_PIN(30),
123	LUTON_PIN(31),
124};
125
126static const unsigned long luton_gpios[] = {
127	[MSCC_GPIO_OUT_SET] = 0x00,
128	[MSCC_GPIO_OUT_CLR] = 0x04,
129	[MSCC_GPIO_OUT] = 0x08,
130	[MSCC_GPIO_IN] = 0x0c,
131	[MSCC_GPIO_OE] = 0x10,
132	[MSCC_GPIO_INTR] = 0x14,
133	[MSCC_GPIO_INTR_ENA] = 0x18,
134	[MSCC_GPIO_INTR_IDENT] = 0x1c,
135	[MSCC_GPIO_ALT0] = 0x20,
136	[MSCC_GPIO_ALT1] = 0x24,
137};
138
139static int luton_gpio_probe(struct udevice *dev)
140{
141	struct gpio_dev_priv *uc_priv;
142
143	uc_priv = dev_get_uclass_priv(dev);
144	uc_priv->bank_name = "luton-gpio";
145	uc_priv->gpio_count = ARRAY_SIZE(luton_pins);
146
147	return 0;
148}
149
150static struct driver luton_gpio_driver = {
151	.name	= "luton-gpio",
152	.id	= UCLASS_GPIO,
153	.probe	= luton_gpio_probe,
154	.ops	= &mscc_gpio_ops,
155};
156
157int luton_pinctrl_probe(struct udevice *dev)
158{
159	int ret;
160
161	ret = mscc_pinctrl_probe(dev, FUNC_MAX, luton_pins,
162				 ARRAY_SIZE(luton_pins), luton_function_names,
163				 luton_gpios);
164
165	if (ret)
166		return ret;
167
168	ret = device_bind(dev, &luton_gpio_driver, "luton-gpio", NULL,
169			  dev_ofnode(dev), NULL);
170
171	return 0;
172}
173
174static const struct udevice_id luton_pinctrl_of_match[] = {
175	{.compatible = "mscc,luton-pinctrl"},
176	{},
177};
178
179U_BOOT_DRIVER(luton_pinctrl) = {
180	.name = "luton-pinctrl",
181	.id = UCLASS_PINCTRL,
182	.of_match = of_match_ptr(luton_pinctrl_of_match),
183	.probe = luton_pinctrl_probe,
184	.priv_auto	= sizeof(struct mscc_pinctrl),
185	.ops = &mscc_pinctrl_ops,
186};
187