mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 04:55:14 +07:00
deda8287e1
This adds pinctrl driver for SPEAr platform. It also updates MAINTAINERS file for SPEAr pinctrl drivers. Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Stephen Warren <swarren@wwwdotorg.org>
143 lines
3.9 KiB
C
143 lines
3.9 KiB
C
/*
|
|
* Driver header file for the ST Microelectronics SPEAr pinmux
|
|
*
|
|
* Copyright (C) 2012 ST Microelectronics
|
|
* Viresh Kumar <viresh.kumar@st.com>
|
|
*
|
|
* This file is licensed under the terms of the GNU General Public
|
|
* License version 2. This program is licensed "as is" without any
|
|
* warranty of any kind, whether express or implied.
|
|
*/
|
|
|
|
#ifndef __PINMUX_SPEAR_H__
|
|
#define __PINMUX_SPEAR_H__
|
|
|
|
#include <linux/pinctrl/pinctrl.h>
|
|
#include <linux/types.h>
|
|
|
|
struct platform_device;
|
|
struct device;
|
|
|
|
/**
|
|
* struct spear_pmx_mode - SPEAr pmx mode
|
|
* @name: name of pmx mode
|
|
* @mode: mode id
|
|
* @reg: register for configuring this mode
|
|
* @mask: mask of this mode in reg
|
|
* @val: val to be configured at reg after doing (val & mask)
|
|
*/
|
|
struct spear_pmx_mode {
|
|
const char *const name;
|
|
u16 mode;
|
|
u16 reg;
|
|
u16 mask;
|
|
u32 val;
|
|
};
|
|
|
|
/**
|
|
* struct spear_muxreg - SPEAr mux reg configuration
|
|
* @reg: register offset
|
|
* @mask: mask bits
|
|
* @val: val to be written on mask bits
|
|
*/
|
|
struct spear_muxreg {
|
|
u16 reg;
|
|
u32 mask;
|
|
u32 val;
|
|
};
|
|
|
|
/**
|
|
* struct spear_modemux - SPEAr mode mux configuration
|
|
* @modes: mode ids supported by this group of muxregs
|
|
* @nmuxregs: number of muxreg configurations to be done for modes
|
|
* @muxregs: array of muxreg configurations to be done for modes
|
|
*/
|
|
struct spear_modemux {
|
|
u16 modes;
|
|
u8 nmuxregs;
|
|
struct spear_muxreg *muxregs;
|
|
};
|
|
|
|
/**
|
|
* struct spear_pingroup - SPEAr pin group configurations
|
|
* @name: name of pin group
|
|
* @pins: array containing pin numbers
|
|
* @npins: size of pins array
|
|
* @modemuxs: array of modemux configurations for this pin group
|
|
* @nmodemuxs: size of array modemuxs
|
|
*
|
|
* A representation of a group of pins in the SPEAr pin controller. Each group
|
|
* allows some parameter or parameters to be configured.
|
|
*/
|
|
struct spear_pingroup {
|
|
const char *name;
|
|
const unsigned *pins;
|
|
unsigned npins;
|
|
struct spear_modemux *modemuxs;
|
|
unsigned nmodemuxs;
|
|
};
|
|
|
|
/**
|
|
* struct spear_function - SPEAr pinctrl mux function
|
|
* @name: The name of the function, exported to pinctrl core.
|
|
* @groups: An array of pin groups that may select this function.
|
|
* @ngroups: The number of entries in @groups.
|
|
*/
|
|
struct spear_function {
|
|
const char *name;
|
|
const char *const *groups;
|
|
unsigned ngroups;
|
|
};
|
|
|
|
/**
|
|
* struct spear_pinctrl_machdata - SPEAr pin controller machine driver
|
|
* configuration
|
|
* @pins: An array describing all pins the pin controller affects.
|
|
* All pins which are also GPIOs must be listed first within the *array,
|
|
* and be numbered identically to the GPIO controller's *numbering.
|
|
* @npins: The numbmer of entries in @pins.
|
|
* @functions: An array describing all mux functions the SoC supports.
|
|
* @nfunctions: The numbmer of entries in @functions.
|
|
* @groups: An array describing all pin groups the pin SoC supports.
|
|
* @ngroups: The numbmer of entries in @groups.
|
|
*
|
|
* @modes_supported: Does SoC support modes
|
|
* @mode: mode configured from probe
|
|
* @pmx_modes: array of modes supported by SoC
|
|
* @npmx_modes: number of entries in pmx_modes.
|
|
*/
|
|
struct spear_pinctrl_machdata {
|
|
const struct pinctrl_pin_desc *pins;
|
|
unsigned npins;
|
|
struct spear_function **functions;
|
|
unsigned nfunctions;
|
|
struct spear_pingroup **groups;
|
|
unsigned ngroups;
|
|
|
|
bool modes_supported;
|
|
u16 mode;
|
|
struct spear_pmx_mode **pmx_modes;
|
|
unsigned npmx_modes;
|
|
};
|
|
|
|
/**
|
|
* struct spear_pmx - SPEAr pinctrl mux
|
|
* @dev: pointer to struct dev of platform_device registered
|
|
* @pctl: pointer to struct pinctrl_dev
|
|
* @machdata: pointer to SoC or machine specific structure
|
|
* @vbase: virtual base address of pinmux controller
|
|
*/
|
|
struct spear_pmx {
|
|
struct device *dev;
|
|
struct pinctrl_dev *pctl;
|
|
struct spear_pinctrl_machdata *machdata;
|
|
void __iomem *vbase;
|
|
};
|
|
|
|
/* exported routines */
|
|
void __devinit pmx_init_addr(struct spear_pinctrl_machdata *machdata, u16 reg);
|
|
int __devinit spear_pinctrl_probe(struct platform_device *pdev,
|
|
struct spear_pinctrl_machdata *machdata);
|
|
int __devexit spear_pinctrl_remove(struct platform_device *pdev);
|
|
#endif /* __PINMUX_SPEAR_H__ */
|