1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Qualcomm sc7280 pinctrl
4 *
5 * (C) Copyright 2024 Linaro Ltd.
6 *
7 */
8
9 #include <dm.h>
10
11 #include "pinctrl-qcom.h"
12
13 #define WEST 0x00000000
14 #define SOUTH 0x00400000
15 #define NORTH 0x00800000
16
17 #define MAX_PIN_NAME_LEN 32
18 static char pin_name[MAX_PIN_NAME_LEN] __section(".data");
19
20 static const struct pinctrl_function msm_pinctrl_functions[] = {
21 { "qup05", 1 },
22 { "gpio", 0 },
23 { "pcie1_clkreqn", 3},
24 };
25 #define SDC_PINGROUP(pg_name, ctl, pull, drv) \
26 { \
27 .name = pg_name, \
28 .ctl_reg = ctl, \
29 .io_reg = 0, \
30 .pull_bit = pull, \
31 .drv_bit = drv, \
32 .oe_bit = -1, \
33 .in_bit = -1, \
34 .out_bit = -1, \
35 }
36
37 #define UFS_RESET(pg_name, offset) \
38 { \
39 .name = pg_name, \
40 .ctl_reg = offset, \
41 .io_reg = offset + 0x4, \
42 .pull_bit = 3, \
43 .drv_bit = 0, \
44 .oe_bit = -1, \
45 .in_bit = -1, \
46 .out_bit = 0, \
47 }
48
49 static const struct msm_special_pin_data sc7280_special_pins_data[] = {
50 [0] = UFS_RESET("ufs_reset", SOUTH + 0xbe000),
51 [1] = SDC_PINGROUP("sdc1_rclk", 0xb3004, 0, 6),
52 [2] = SDC_PINGROUP("sdc1_clk", 0xb3000, 13, 6),
53 [3] = SDC_PINGROUP("sdc1_cmd", 0xb3000, 11, 3),
54 [4] = SDC_PINGROUP("sdc1_data", 0xb3000, 9, 0),
55 [5] = SDC_PINGROUP("sdc2_clk", 0xb4000, 14, 6),
56 [6] = SDC_PINGROUP("sdc2_cmd", 0xb4000, 11, 3),
57 [7] = SDC_PINGROUP("sdc2_data", 0xb4000, 9, 0),
58 };
59
sc7280_get_function_name(struct udevice * dev,unsigned int selector)60 static const char *sc7280_get_function_name(struct udevice *dev, unsigned int selector)
61 {
62 return msm_pinctrl_functions[selector].name;
63 }
64
sc7280_get_pin_name(struct udevice * dev,unsigned int selector)65 static const char *sc7280_get_pin_name(struct udevice *dev, unsigned int selector)
66 {
67 if (selector >= 175 && selector <= 182)
68 snprintf(pin_name, MAX_PIN_NAME_LEN,
69 sc7280_special_pins_data[selector - 175].name);
70 else
71 snprintf(pin_name, MAX_PIN_NAME_LEN, "gpio%u", selector);
72
73 return pin_name;
74 }
75
sc7280_get_function_mux(__maybe_unused unsigned int pin,unsigned int selector)76 static int sc7280_get_function_mux(__maybe_unused unsigned int pin, unsigned int selector)
77 {
78 return msm_pinctrl_functions[selector].val;
79 }
80
81 static struct msm_pinctrl_data sc7280_data = {
82 .pin_data = {
83 .pin_count = 183,
84 .special_pins_start = 175,
85 .special_pins_data = sc7280_special_pins_data,
86 },
87 .functions_count = ARRAY_SIZE(msm_pinctrl_functions),
88 .get_function_name = sc7280_get_function_name,
89 .get_function_mux = sc7280_get_function_mux,
90 .get_pin_name = sc7280_get_pin_name,
91 };
92
93 static const struct udevice_id msm_pinctrl_ids[] = {
94 {
95 .compatible = "qcom,sc7280-pinctrl",
96 .data = (ulong)&sc7280_data
97 },
98 { /* Sentinel */ } };
99
100 U_BOOT_DRIVER(pinctrl_sc7280) = {
101 .name = "pinctrl_sc7280",
102 .id = UCLASS_NOP,
103 .of_match = msm_pinctrl_ids,
104 .ops = &msm_pinctrl_ops,
105 .bind = msm_pinctrl_bind,
106 };
107