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