1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Exynos7420 pinctrl driver.
4  * Copyright (C) 2016 Samsung Electronics
5  * Thomas Abraham <thomas.ab@samsung.com>
6  */
7 
8 #include <common.h>
9 #include <dm.h>
10 #include <errno.h>
11 #include <asm/io.h>
12 #include <dm/pinctrl.h>
13 #include <dm/root.h>
14 #include <fdtdec.h>
15 #include <asm/arch/pinmux.h>
16 #include "pinctrl-exynos.h"
17 
18 #define	GPD1_OFFSET	0xc0
19 
20 static struct exynos_pinctrl_config_data serial2_conf[] = {
21 	{
22 		.offset	= GPD1_OFFSET + PIN_CON,
23 		.mask	= 0x00ff0000,
24 		.value	= 0x00220000,
25 	}, {
26 		.offset	= GPD1_OFFSET + PIN_PUD,
27 		.mask	= 0x00000f00,
28 		.value	= 0x00000f00,
29 	},
30 };
31 
32 static int exynos7420_pinctrl_request(struct udevice *dev, int peripheral,
33 						int flags)
34 {
35 	struct exynos_pinctrl_priv *priv = dev_get_priv(dev);
36 	unsigned long base = priv->base;
37 
38 	switch (PERIPH_ID_UART2) {
39 	case PERIPH_ID_UART2:
40 		exynos_pinctrl_setup_peri(serial2_conf,
41 					  ARRAY_SIZE(serial2_conf), base);
42 		break;
43 	default:
44 		return -ENODEV;
45 	}
46 
47 	return 0;
48 }
49 
50 static struct pinctrl_ops exynos7420_pinctrl_ops = {
51 	.set_state	= exynos_pinctrl_set_state,
52 	.request	= exynos7420_pinctrl_request,
53 };
54 
55 /* pin banks of Exynos7420 pin-controller - BUS0 */
56 static const struct samsung_pin_bank_data exynos7420_pin_banks0[] = {
57 	EXYNOS_PIN_BANK(5, 0x000, "gpb0"),
58 	EXYNOS_PIN_BANK(8, 0x020, "gpc0"),
59 	EXYNOS_PIN_BANK(2, 0x040, "gpc1"),
60 	EXYNOS_PIN_BANK(6, 0x060, "gpc2"),
61 	EXYNOS_PIN_BANK(8, 0x080, "gpc3"),
62 	EXYNOS_PIN_BANK(4, 0x0a0, "gpd0"),
63 	EXYNOS_PIN_BANK(6, 0x0c0, "gpd1"),
64 	EXYNOS_PIN_BANK(8, 0x0e0, "gpd2"),
65 	EXYNOS_PIN_BANK(5, 0x100, "gpd4"),
66 	EXYNOS_PIN_BANK(4, 0x120, "gpd5"),
67 	EXYNOS_PIN_BANK(6, 0x140, "gpd6"),
68 	EXYNOS_PIN_BANK(3, 0x160, "gpd7"),
69 	EXYNOS_PIN_BANK(2, 0x180, "gpd8"),
70 	EXYNOS_PIN_BANK(2, 0x1a0, "gpg0"),
71 	EXYNOS_PIN_BANK(4, 0x1c0, "gpg3"),
72 };
73 
74 /* pin banks of Exynos7420 pin-controller - FSYS0 */
75 static const struct samsung_pin_bank_data exynos7420_pin_banks1[] = {
76 	EXYNOS_PIN_BANK(7, 0x000, "gpr4"),
77 };
78 
79 /* pin banks of Exynos7420 pin-controller - FSYS1 */
80 static const struct samsung_pin_bank_data exynos7420_pin_banks2[] = {
81 	EXYNOS_PIN_BANK(4, 0x000, "gpr0"),
82 	EXYNOS_PIN_BANK(8, 0x020, "gpr1"),
83 	EXYNOS_PIN_BANK(5, 0x040, "gpr2"),
84 	EXYNOS_PIN_BANK(8, 0x060, "gpr3"),
85 };
86 
87 const struct samsung_pin_ctrl exynos7420_pin_ctrl[] = {
88 	{
89 		/* pin-controller instance BUS0 data */
90 		.pin_banks	= exynos7420_pin_banks0,
91 		.nr_banks	= ARRAY_SIZE(exynos7420_pin_banks0),
92 	}, {
93 		/* pin-controller instance FSYS0 data */
94 		.pin_banks	= exynos7420_pin_banks1,
95 		.nr_banks	= ARRAY_SIZE(exynos7420_pin_banks1),
96 	}, {
97 		/* pin-controller instance FSYS1 data */
98 		.pin_banks	= exynos7420_pin_banks2,
99 		.nr_banks	= ARRAY_SIZE(exynos7420_pin_banks2),
100 	},
101 };
102 
103 static const struct udevice_id exynos7420_pinctrl_ids[] = {
104 	{ .compatible = "samsung,exynos7420-pinctrl",
105 		.data = (ulong)exynos7420_pin_ctrl },
106 	{ }
107 };
108 
109 U_BOOT_DRIVER(pinctrl_exynos7420) = {
110 	.name		= "pinctrl_exynos7420",
111 	.id		= UCLASS_PINCTRL,
112 	.of_match	= exynos7420_pinctrl_ids,
113 	.priv_auto_alloc_size = sizeof(struct exynos_pinctrl_priv),
114 	.ops		= &exynos7420_pinctrl_ops,
115 	.probe		= exynos_pinctrl_probe,
116 	.flags		= DM_FLAG_PRE_RELOC
117 };
118