diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-24 10:33:08 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-24 10:33:08 -0700 |
commit | e731f3146ff3bba5424b40140e1a7e6f92e94964 (patch) | |
tree | c926040385de8b020763f0d2338e0ccbf42bac45 /arch/arm/mach-s3c/gpio-cfg-helpers.h | |
parent | 1f70935f637dfba226bf77182c2629fde61ed06e (diff) | |
parent | accdab6d9e8f715068d91ee0ca0424a6999f0d19 (diff) |
Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC platform updates from Olof Johansson:
"SoC changes, a substantial part of this is cleanup of some of the
older platforms that used to have a bunch of board files.
In particular:
- Remove non-DT i.MX platforms that haven't seen activity in years,
it's time to remove them.
- A bunch of cleanup and removal of platform data for TI/OMAP
platforms, moving over to genpd for power/reset control (yay!)
- Major cleanup of Samsung S3C24xx and S3C64xx platforms, moving them
closer to multiplatform support (not quite there yet, but getting
close).
There are a few other changes too, smaller fixlets, etc. For new
platform support, the primary ones are:
- New SoC: Hisilicon SD5203, ARM926EJ-S platform.
- Cpufreq support for i.MX7ULP"
* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (121 commits)
ARM: mstar: Select MStar intc
ARM: stm32: Replace HTTP links with HTTPS ones
ARM: debug: add UART early console support for SD5203
ARM: hisi: add support for SD5203 SoC
ARM: omap3: enable off mode automatically
clk: imx: imx35: Remove mx35_clocks_init()
clk: imx: imx31: Remove mx31_clocks_init()
clk: imx: imx27: Remove mx27_clocks_init()
ARM: imx: Remove unused definitions
ARM: imx35: Retrieve the IIM base address from devicetree
ARM: imx3: Retrieve the AVIC base address from devicetree
ARM: imx3: Retrieve the CCM base address from devicetree
ARM: imx31: Retrieve the IIM base address from devicetree
ARM: imx27: Retrieve the CCM base address from devicetree
ARM: imx27: Retrieve the SYSCTRL base address from devicetree
ARM: s3c64xx: bring back notes from removed debug-macro.S
ARM: s3c24xx: fix Wunused-variable warning on !MMU
ARM: samsung: fix PM debug build with DEBUG_LL but !MMU
MAINTAINERS: mark linux-samsung-soc list non-moderated
ARM: imx: Remove remnant board file support pieces
...
Diffstat (limited to 'arch/arm/mach-s3c/gpio-cfg-helpers.h')
-rw-r--r-- | arch/arm/mach-s3c/gpio-cfg-helpers.h | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c/gpio-cfg-helpers.h b/arch/arm/mach-s3c/gpio-cfg-helpers.h new file mode 100644 index 000000000000..db0c56f5ca15 --- /dev/null +++ b/arch/arm/mach-s3c/gpio-cfg-helpers.h @@ -0,0 +1,159 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2008 Openmoko, Inc. + * Copyright 2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * Samsung Platform - GPIO pin configuration helper definitions + */ + +/* This is meant for core cpu support, machine or other driver files + * should not be including this header. + */ + +#ifndef __PLAT_GPIO_CFG_HELPERS_H +#define __PLAT_GPIO_CFG_HELPERS_H __FILE__ + +/* As a note, all gpio configuration functions are entered exclusively, either + * with the relevant lock held or the system prevented from doing anything else + * by disabling interrupts. +*/ + +static inline int samsung_gpio_do_setcfg(struct samsung_gpio_chip *chip, + unsigned int off, unsigned int config) +{ + return (chip->config->set_config)(chip, off, config); +} + +static inline unsigned samsung_gpio_do_getcfg(struct samsung_gpio_chip *chip, + unsigned int off) +{ + return (chip->config->get_config)(chip, off); +} + +static inline int samsung_gpio_do_setpull(struct samsung_gpio_chip *chip, + unsigned int off, samsung_gpio_pull_t pull) +{ + return (chip->config->set_pull)(chip, off, pull); +} + +static inline samsung_gpio_pull_t samsung_gpio_do_getpull(struct samsung_gpio_chip *chip, + unsigned int off) +{ + return chip->config->get_pull(chip, off); +} + +/* Pull-{up,down} resistor controls. + * + * S3C2410,S3C2440 = Pull-UP, + * S3C2412,S3C2413 = Pull-Down + * S3C6400,S3C6410 = Pull-Both [None,Down,Up,Undef] + * S3C2443 = Pull-Both [not same as S3C6400] + */ + +/** + * s3c24xx_gpio_setpull_1up() - Pull configuration for choice of up or none. + * @chip: The gpio chip that is being configured. + * @off: The offset for the GPIO being configured. + * @param: pull: The pull mode being requested. + * + * This is a helper function for the case where we have GPIOs with one + * bit configuring the presence of a pull-up resistor. + */ +extern int s3c24xx_gpio_setpull_1up(struct samsung_gpio_chip *chip, + unsigned int off, samsung_gpio_pull_t pull); + +/** + * s3c24xx_gpio_setpull_1down() - Pull configuration for choice of down or none + * @chip: The gpio chip that is being configured + * @off: The offset for the GPIO being configured + * @param: pull: The pull mode being requested + * + * This is a helper function for the case where we have GPIOs with one + * bit configuring the presence of a pull-down resistor. + */ +extern int s3c24xx_gpio_setpull_1down(struct samsung_gpio_chip *chip, + unsigned int off, samsung_gpio_pull_t pull); + +/** + * samsung_gpio_setpull_upown() - Pull configuration for choice of up, + * down or none + * + * @chip: The gpio chip that is being configured. + * @off: The offset for the GPIO being configured. + * @param: pull: The pull mode being requested. + * + * This is a helper function for the case where we have GPIOs with two + * bits configuring the presence of a pull resistor, in the following + * order: + * 00 = No pull resistor connected + * 01 = Pull-up resistor connected + * 10 = Pull-down resistor connected + */ +extern int samsung_gpio_setpull_updown(struct samsung_gpio_chip *chip, + unsigned int off, samsung_gpio_pull_t pull); + +/** + * samsung_gpio_getpull_updown() - Get configuration for choice of up, + * down or none + * + * @chip: The gpio chip that the GPIO pin belongs to + * @off: The offset to the pin to get the configuration of. + * + * This helper function reads the state of the pull-{up,down} resistor + * for the given GPIO in the same case as samsung_gpio_setpull_upown. +*/ +extern samsung_gpio_pull_t samsung_gpio_getpull_updown(struct samsung_gpio_chip *chip, + unsigned int off); + +/** + * s3c24xx_gpio_getpull_1up() - Get configuration for choice of up or none + * @chip: The gpio chip that the GPIO pin belongs to + * @off: The offset to the pin to get the configuration of. + * + * This helper function reads the state of the pull-up resistor for the + * given GPIO in the same case as s3c24xx_gpio_setpull_1up. +*/ +extern samsung_gpio_pull_t s3c24xx_gpio_getpull_1up(struct samsung_gpio_chip *chip, + unsigned int off); + +/** + * s3c24xx_gpio_getpull_1down() - Get configuration for choice of down or none + * @chip: The gpio chip that the GPIO pin belongs to + * @off: The offset to the pin to get the configuration of. + * + * This helper function reads the state of the pull-down resistor for the + * given GPIO in the same case as s3c24xx_gpio_setpull_1down. +*/ +extern samsung_gpio_pull_t s3c24xx_gpio_getpull_1down(struct samsung_gpio_chip *chip, + unsigned int off); + +/** + * s3c2443_gpio_setpull() - Pull configuration for s3c2443. + * @chip: The gpio chip that is being configured. + * @off: The offset for the GPIO being configured. + * @param: pull: The pull mode being requested. + * + * This is a helper function for the case where we have GPIOs with two + * bits configuring the presence of a pull resistor, in the following + * order: + * 00 = Pull-up resistor connected + * 10 = Pull-down resistor connected + * x1 = No pull up resistor + */ +extern int s3c2443_gpio_setpull(struct samsung_gpio_chip *chip, + unsigned int off, samsung_gpio_pull_t pull); + +/** + * s3c2443_gpio_getpull() - Get configuration for s3c2443 pull resistors + * @chip: The gpio chip that the GPIO pin belongs to. + * @off: The offset to the pin to get the configuration of. + * + * This helper function reads the state of the pull-{up,down} resistor for the + * given GPIO in the same case as samsung_gpio_setpull_upown. +*/ +extern samsung_gpio_pull_t s3c2443_gpio_getpull(struct samsung_gpio_chip *chip, + unsigned int off); + +#endif /* __PLAT_GPIO_CFG_HELPERS_H */ |