93 lines
2 KiB
C
93 lines
2 KiB
C
/*
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* Marvell PXA2xx family pin control
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*
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* Copyright (C) 2015 Robert Jarzmik
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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*/
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#ifndef __PINCTRL_PXA_H
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#define __PINCTRL_PXA_H
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#define PXA_FUNCTION(_dir, _af, _name) \
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{ \
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.name = _name, \
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.muxval = (_dir | (_af << 1)), \
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}
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#define PXA_PIN(_pin, funcs...) \
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{ \
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.pin = _pin, \
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.functions = (struct pxa_desc_function[]){ \
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funcs, { } }, \
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}
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#define PXA_GPIO_PIN(_pin, funcs...) \
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{ \
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.pin = _pin, \
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.functions = (struct pxa_desc_function[]){ \
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PXA_FUNCTION(0, 0, "gpio_in"), \
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PXA_FUNCTION(1, 0, "gpio_out"), \
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funcs, { } }, \
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}
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#define PXA_GPIO_ONLY_PIN(_pin) \
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{ \
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.pin = _pin, \
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.functions = (struct pxa_desc_function[]){ \
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PXA_FUNCTION(0, 0, "gpio_in"), \
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PXA_FUNCTION(1, 0, "gpio_out"), \
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{ } }, \
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}
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#define PXA_PINCTRL_PIN(pin) \
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PINCTRL_PIN(pin, "P" #pin)
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struct pxa_desc_function {
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const char *name;
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u8 muxval;
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};
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struct pxa_desc_pin {
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struct pinctrl_pin_desc pin;
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struct pxa_desc_function *functions;
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};
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struct pxa_pinctrl_group {
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const char *name;
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unsigned pin;
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};
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struct pxa_pinctrl_function {
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const char *name;
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const char **groups;
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unsigned ngroups;
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};
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struct pxa_pinctrl {
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spinlock_t lock;
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void __iomem **base_gafr;
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void __iomem **base_gpdr;
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void __iomem **base_pgsr;
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struct device *dev;
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struct pinctrl_desc desc;
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struct pinctrl_dev *pctl_dev;
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unsigned npins;
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const struct pxa_desc_pin *ppins;
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unsigned ngroups;
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struct pxa_pinctrl_group *groups;
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unsigned nfuncs;
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struct pxa_pinctrl_function *functions;
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char *name;
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};
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int pxa2xx_pinctrl_init(struct platform_device *pdev,
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const struct pxa_desc_pin *ppins, int npins,
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void __iomem *base_gafr[], void __iomem *base_gpdr[],
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void __iomem *base_gpsr[]);
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#endif /* __PINCTRL_PXA_H */
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