diff options
Diffstat (limited to 'drivers/pinctrl/actions/pinctrl-owl.h')
| -rw-r--r-- | drivers/pinctrl/actions/pinctrl-owl.h | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/drivers/pinctrl/actions/pinctrl-owl.h b/drivers/pinctrl/actions/pinctrl-owl.h new file mode 100644 index 0000000000000..74342378937c4 --- /dev/null +++ b/drivers/pinctrl/actions/pinctrl-owl.h @@ -0,0 +1,162 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * OWL SoC's Pinctrl definitions + * + * Copyright (c) 2014 Actions Semi Inc. + * Author: David Liu <liuwei@actions-semi.com> + * + * Copyright (c) 2018 Linaro Ltd. + * Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> + */ + +#ifndef __PINCTRL_OWL_H__ +#define __PINCTRL_OWL_H__ + +#define OWL_PINCONF_SLEW_SLOW 0 +#define OWL_PINCONF_SLEW_FAST 1 + +enum owl_pinconf_pull { + OWL_PINCONF_PULL_HIZ, + OWL_PINCONF_PULL_DOWN, + OWL_PINCONF_PULL_UP, + OWL_PINCONF_PULL_HOLD, +}; + +enum owl_pinconf_drv { + OWL_PINCONF_DRV_2MA, + OWL_PINCONF_DRV_4MA, + OWL_PINCONF_DRV_8MA, + OWL_PINCONF_DRV_12MA, +}; + +/** + * struct owl_pullctl - Actions pad pull control register + * @reg: offset to the pull control register + * @shift: shift value of the register + * @width: width of the register + */ +struct owl_pullctl { + int reg; + unsigned int shift; + unsigned int width; +}; + +/** + * struct owl_st - Actions pad schmitt trigger enable register + * @reg: offset to the schmitt trigger enable register + * @shift: shift value of the register + * @width: width of the register + */ +struct owl_st { + int reg; + unsigned int shift; + unsigned int width; +}; + +/** + * struct owl_pingroup - Actions pingroup definition + * @name: name of the pin group + * @pads: list of pins assigned to this pingroup + * @npads: size of @pads array + * @funcs: list of pinmux functions for this pingroup + * @nfuncs: size of @funcs array + * @mfpctl_reg: multiplexing control register offset + * @mfpctl_shift: multiplexing control register bit mask + * @mfpctl_width: multiplexing control register width + * @drv_reg: drive control register offset + * @drv_shift: drive control register bit mask + * @drv_width: driver control register width + * @sr_reg: slew rate control register offset + * @sr_shift: slew rate control register bit mask + * @sr_width: slew rate control register width + */ +struct owl_pingroup { + const char *name; + unsigned int *pads; + unsigned int npads; + unsigned int *funcs; + unsigned int nfuncs; + + int mfpctl_reg; + unsigned int mfpctl_shift; + unsigned int mfpctl_width; + + int drv_reg; + unsigned int drv_shift; + unsigned int drv_width; + + int sr_reg; + unsigned int sr_shift; + unsigned int sr_width; +}; + +/** + * struct owl_padinfo - Actions pinctrl pad info + * @pad: pad name of the SoC + * @pullctl: pull control register info + * @st: schmitt trigger register info + */ +struct owl_padinfo { + int pad; + struct owl_pullctl *pullctl; + struct owl_st *st; +}; + +/** + * struct owl_pinmux_func - Actions pinctrl mux functions + * @name: name of the pinmux function. + * @groups: array of pin groups that may select this function. + * @ngroups: number of entries in @groups. + */ +struct owl_pinmux_func { + const char *name; + const char * const *groups; + unsigned int ngroups; +}; + +/** + * struct owl_gpio_port - Actions GPIO port info + * @offset: offset of the GPIO port. + * @pins: number of pins belongs to the GPIO port. + * @outen: offset of the output enable register. + * @inen: offset of the input enable register. + * @dat: offset of the data register. + */ +struct owl_gpio_port { + unsigned int offset; + unsigned int pins; + unsigned int outen; + unsigned int inen; + unsigned int dat; +}; + +/** + * struct owl_pinctrl_soc_data - Actions pin controller driver configuration + * @pins: array describing all pins of the pin controller. + * @npins: number of entries in @pins. + * @functions: array describing all mux functions of this SoC. + * @nfunction: number of entries in @functions. + * @groups: array describing all pin groups of this SoC. + * @ngroups: number of entries in @groups. + * @padinfo: array describing the pad info of this SoC. + * @ngpios: number of pingroups the driver should expose as GPIOs. + * @port: array describing all GPIO ports of this SoC. + * @nports: number of GPIO ports in this SoC. + */ +struct owl_pinctrl_soc_data { + const struct pinctrl_pin_desc *pins; + unsigned int npins; + const struct owl_pinmux_func *functions; + unsigned int nfunctions; + const struct owl_pingroup *groups; + unsigned int ngroups; + const struct owl_padinfo *padinfo; + unsigned int ngpios; + const struct owl_gpio_port *ports; + unsigned int nports; +}; + +int owl_pinctrl_probe(struct platform_device *pdev, + struct owl_pinctrl_soc_data *soc_data); + +#endif /* __PINCTRL_OWL_H__ */ |