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8f903f8a34
The i.MX pinctrl driver uses 5 different arrays for storing the informations for pins. This requires five allocations. Instead, use a struct type which is more cache friendly, readable and requires less allocations. One array of integers is still needed since the pinctrl framework forces us to maintain it. This also adds checks whether the allocations are succesful which were missing. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
102 lines
2.5 KiB
C
102 lines
2.5 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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u16 mux_reg;
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u16 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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struct imx_pmx_func *functions;
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unsigned int nfunctions;
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unsigned int flags;
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};
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#define ZERO_OFFSET_VALID 0x1
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#define SHARE_MUX_CONF_REG 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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