tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Marvell PXA2xx family pin control
4 *
5 * Copyright (C) 2015 Robert Jarzmik
6 */
7
8#ifndef __PINCTRL_PXA_H
9#define __PINCTRL_PXA_H
10
11#define PXA_FUNCTION(_dir, _af, _name) \
12 { \
13 .name = _name, \
14 .muxval = (_dir | (_af << 1)), \
15 }
16
17#define PXA_PIN(_pin, funcs...) \
18 { \
19 .pin = _pin, \
20 .functions = (struct pxa_desc_function[]){ \
21 funcs, { } }, \
22 }
23
24#define PXA_GPIO_PIN(_pin, funcs...) \
25 { \
26 .pin = _pin, \
27 .functions = (struct pxa_desc_function[]){ \
28 PXA_FUNCTION(0, 0, "gpio_in"), \
29 PXA_FUNCTION(1, 0, "gpio_out"), \
30 funcs, { } }, \
31 }
32
33#define PXA_GPIO_ONLY_PIN(_pin) \
34 { \
35 .pin = _pin, \
36 .functions = (struct pxa_desc_function[]){ \
37 PXA_FUNCTION(0, 0, "gpio_in"), \
38 PXA_FUNCTION(1, 0, "gpio_out"), \
39 { } }, \
40 }
41
42#define PXA_PINCTRL_PIN(pin) \
43 PINCTRL_PIN(pin, "P" #pin)
44
45struct pxa_desc_function {
46 const char *name;
47 u8 muxval;
48};
49
50struct pxa_desc_pin {
51 struct pinctrl_pin_desc pin;
52 struct pxa_desc_function *functions;
53};
54
55struct pxa_pinctrl {
56 spinlock_t lock;
57 void __iomem **base_gafr;
58 void __iomem **base_gpdr;
59 void __iomem **base_pgsr;
60 struct device *dev;
61 struct pinctrl_desc desc;
62 struct pinctrl_dev *pctl_dev;
63 unsigned npins;
64 const struct pxa_desc_pin *ppins;
65 unsigned ngroups;
66 struct pingroup *groups;
67 unsigned nfuncs;
68 struct pinfunction *functions;
69 char *name;
70};
71
72int pxa2xx_pinctrl_init(struct platform_device *pdev,
73 const struct pxa_desc_pin *ppins, int npins,
74 void __iomem *base_gafr[], void __iomem *base_gpdr[],
75 void __iomem *base_gpsr[]);
76
77#endif /* __PINCTRL_PXA_H */