forked from Minki/linux
8626ada871
Commit bdb0066df9 ("mfd: syscon: Decouple syscon interface from platform
devices") added the possibility to register syscon devices without
associated platform device. This also removed regmap debugfs facilities,
which don't work without a device. This patch associates the syscon regmap
that handles the IOMUX controller's general purpose registers with the
pinctrl device so that the GPR registers appear in the regmap debugfs
directory again. For example, on i.MX6Q the GPR registers now can be
read from /sys/kernel/debug/regmap/20e0000.iomuxc-gpr/registers.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
104 lines
2.6 KiB
C
104 lines
2.6 KiB
C
/*
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* IMX pinmux core definitions
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*
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* Copyright (C) 2012 Freescale Semiconductor, Inc.
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* Copyright (C) 2012 Linaro Ltd.
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*
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* Author: Dong Aisheng <dong.aisheng@linaro.org>
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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; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __DRIVERS_PINCTRL_IMX_H
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#define __DRIVERS_PINCTRL_IMX_H
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struct platform_device;
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/**
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* struct imx_pin_group - describes a single i.MX pin
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* @pin: the pin_id of this pin
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* @mux_mode: the mux mode for this pin.
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* @input_reg: the select input register offset for this pin if any
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* 0 if no select input setting needed.
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* @input_val: the select input value for this pin.
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* @configs: the config for this pin.
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*/
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struct imx_pin {
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unsigned int pin;
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unsigned int mux_mode;
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u16 input_reg;
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unsigned int input_val;
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unsigned long config;
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};
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/**
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* struct imx_pin_group - describes an IMX pin group
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* @name: the name of this specific pin group
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* @npins: the number of pins in this group array, i.e. the number of
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* elements in .pins so we can iterate over that array
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* @pin_ids: array of pin_ids. pinctrl forces us to maintain such an array
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* @pins: array of pins
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*/
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struct imx_pin_group {
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const char *name;
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unsigned npins;
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unsigned int *pin_ids;
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struct imx_pin *pins;
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};
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/**
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* struct imx_pmx_func - describes IMX pinmux functions
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* @name: the name of this specific function
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* @groups: corresponding pin groups
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* @num_groups: the number of groups
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*/
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struct imx_pmx_func {
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const char *name;
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const char **groups;
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unsigned num_groups;
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};
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/**
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* struct imx_pin_reg - describe a pin reg map
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* @mux_reg: mux register offset
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* @conf_reg: config register offset
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*/
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struct imx_pin_reg {
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s16 mux_reg;
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s16 conf_reg;
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};
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struct imx_pinctrl_soc_info {
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struct device *dev;
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const struct pinctrl_pin_desc *pins;
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unsigned int npins;
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struct imx_pin_reg *pin_regs;
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struct imx_pin_group *groups;
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unsigned int ngroups;
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unsigned int group_index;
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struct imx_pmx_func *functions;
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unsigned int nfunctions;
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unsigned int flags;
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const char *gpr_compatible;
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};
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#define SHARE_MUX_CONF_REG 0x1
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#define ZERO_OFFSET_VALID 0x2
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#define NO_MUX 0x0
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#define NO_PAD 0x0
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#define IMX_PINCTRL_PIN(pin) PINCTRL_PIN(pin, #pin)
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#define PAD_CTL_MASK(len) ((1 << len) - 1)
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#define IMX_MUX_MASK 0x7
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#define IOMUXC_CONFIG_SION (0x1 << 4)
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int imx_pinctrl_probe(struct platform_device *pdev,
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struct imx_pinctrl_soc_info *info);
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int imx_pinctrl_remove(struct platform_device *pdev);
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#endif /* __DRIVERS_PINCTRL_IMX_H */
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