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Diffstat (limited to 'drivers/pinctrl/pinctrl-imx.h')
| -rw-r--r-- | drivers/pinctrl/pinctrl-imx.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-imx.h b/drivers/pinctrl/pinctrl-imx.h new file mode 100644 index 00000000000..9b65e7828f1 --- /dev/null +++ b/drivers/pinctrl/pinctrl-imx.h @@ -0,0 +1,106 @@ +/* + * 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 an IMX pin group + * @name: the name of this specific pin group + * @pins: an array of discrete physical pins used in this group, taken + * from the driver-local pin enumeration space + * @npins: the number of pins in this group array, i.e. the number of + * elements in .pins so we can iterate over that array + * @mux_mode: the mux mode for each pin in this group. The size of this + * array is the same as pins. + * @configs: the config for each pin in this group. The size of this + * array is the same as pins. + */ +struct imx_pin_group { + const char *name; + unsigned int *pins; + unsigned npins; + unsigned int *mux_mode; + unsigned long *configs; +}; + +/** + * 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 + * The last 3 members are used for select input setting + * @pid: pin id + * @mux_reg: mux register offset + * @conf_reg: config register offset + * @mux_mode: mux mode + * @input_reg: select input register offset for this mux if any + * 0 if no select input setting needed. + * @input_val: the value set to select input register + */ +struct imx_pin_reg { + u16 pid; + u16 mux_reg; + u16 conf_reg; + u8 mux_mode; + u16 input_reg; + u8 input_val; +}; + +struct imx_pinctrl_soc_info { + struct device *dev; + const struct pinctrl_pin_desc *pins; + unsigned int npins; + const struct imx_pin_reg *pin_regs; + unsigned int npin_regs; + struct imx_pin_group *groups; + unsigned int ngroups; + struct imx_pmx_func *functions; + unsigned int nfunctions; +}; + +#define NO_MUX 0x0 +#define NO_PAD 0x0 + +#define IMX_PIN_REG(id, conf, mux, mode, input, val) \ + { \ + .pid = id, \ + .conf_reg = conf, \ + .mux_reg = mux, \ + .mux_mode = mode, \ + .input_reg = input, \ + .input_val = val, \ + } + +#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 */ |