diff options
Diffstat (limited to 'drivers/pinctrl/freescale/pinctrl-imx.h')
| -rw-r--r-- | drivers/pinctrl/freescale/pinctrl-imx.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/drivers/pinctrl/freescale/pinctrl-imx.h b/drivers/pinctrl/freescale/pinctrl-imx.h new file mode 100644 index 000000000000..49e55d39f7c8 --- /dev/null +++ b/drivers/pinctrl/freescale/pinctrl-imx.h @@ -0,0 +1,100 @@ +/* + * IMX pinmux core definitions + * + * Copyright (C) 2012 Freescale Semiconductor, Inc. + * Copyright (C) 2012 Linaro Ltd. + * + * Author: Dong Aisheng <dong.aisheng@linaro.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef __DRIVERS_PINCTRL_IMX_H +#define __DRIVERS_PINCTRL_IMX_H + +struct platform_device; + +/** + * struct imx_pin_group - describes a single i.MX pin + * @pin: the pin_id of this pin + * @mux_mode: the mux mode for this pin. + * @input_reg: the select input register offset for this pin if any + * 0 if no select input setting needed. + * @input_val: the select input value for this pin. + * @configs: the config for this pin. + */ +struct imx_pin { + unsigned int pin; + unsigned int mux_mode; + u16 input_reg; + unsigned int input_val; + unsigned long config; +}; + +/** + * struct imx_pin_group - describes an IMX pin group + * @name: the name of this specific pin group + * @npins: the number of pins in this group array, i.e. the number of + * elements in .pins so we can iterate over that array + * @pin_ids: array of pin_ids. pinctrl forces us to maintain such an array + * @pins: array of pins + */ +struct imx_pin_group { + const char *name; + unsigned npins; + unsigned int *pin_ids; + struct imx_pin *pins; +}; + +/** + * struct imx_pmx_func - describes IMX pinmux functions + * @name: the name of this specific function + * @groups: corresponding pin groups + * @num_groups: the number of groups + */ +struct imx_pmx_func { + const char *name; + const char **groups; + unsigned num_groups; +}; + +/** + * struct imx_pin_reg - describe a pin reg map + * @mux_reg: mux register offset + * @conf_reg: config register offset + */ +struct imx_pin_reg { + s16 mux_reg; + s16 conf_reg; +}; + +struct imx_pinctrl_soc_info { + struct device *dev; + const struct pinctrl_pin_desc *pins; + unsigned int npins; + struct imx_pin_reg *pin_regs; + struct imx_pin_group *groups; + unsigned int ngroups; + struct imx_pmx_func *functions; + unsigned int nfunctions; + unsigned int flags; +}; + +#define SHARE_MUX_CONF_REG 0x1 + +#define NO_MUX 0x0 +#define NO_PAD 0x0 + +#define IMX_PINCTRL_PIN(pin) PINCTRL_PIN(pin, #pin) + +#define PAD_CTL_MASK(len) ((1 << len) - 1) +#define IMX_MUX_MASK 0x7 +#define IOMUXC_CONFIG_SION (0x1 << 4) + +int imx_pinctrl_probe(struct platform_device *pdev, + struct imx_pinctrl_soc_info *info); +int imx_pinctrl_remove(struct platform_device *pdev); +#endif /* __DRIVERS_PINCTRL_IMX_H */ |