diff options
author | Tomaz Solc <tomaz.solc@tablix.org> | 2019-02-18 12:32:15 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-02-19 10:07:44 +0100 |
commit | be717102c8ba2d0ea0225e9fe0590fd71e24caf4 (patch) | |
tree | 52d089e3ba913e64d7db9e207c077ebe7cf7459b /drivers/gpio | |
parent | f959a76d540cf34c49d6f2c85914b274e8614d6f (diff) | |
download | barebox-be717102c8ba2d0ea0225e9fe0590fd71e24caf4.tar.gz barebox-be717102c8ba2d0ea0225e9fe0590fd71e24caf4.tar.xz |
pinctrl: bcm2835: move existing code from gpio.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/gpio')
-rw-r--r-- | drivers/gpio/Kconfig | 4 | ||||
-rw-r--r-- | drivers/gpio/Makefile | 1 | ||||
-rw-r--r-- | drivers/gpio/gpio-bcm2835.c | 162 |
3 files changed, 0 insertions, 167 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index ed93e868ae..c535904ed0 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -21,10 +21,6 @@ config GPIO_74164 shift registers. This driver can be used to provide access to more gpio outputs. -config GPIO_BCM283X - bool "GPIO support for BCM283X" - depends on ARCH_BCM283X - config GPIO_CLPS711X bool "GPIO support for CLPS711X" depends on ARCH_CLPS711X diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index f5ed876d5e..52280f0bb4 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -2,7 +2,6 @@ obj-$(CONFIG_GPIOLIB) += gpiolib.o obj-$(CONFIG_GPIO_74164) += gpio-74164.o obj-$(CONFIG_MACH_MIPS_ATH79) += gpio-ath79.o -obj-$(CONFIG_GPIO_BCM283X) += gpio-bcm2835.o obj-$(CONFIG_GPIO_DAVINCI) += gpio-davinci.o obj-$(CONFIG_GPIO_CLPS711X) += gpio-clps711x.o obj-$(CONFIG_GPIO_DIGIC) += gpio-digic.o diff --git a/drivers/gpio/gpio-bcm2835.c b/drivers/gpio/gpio-bcm2835.c deleted file mode 100644 index 1802ab7ccb..0000000000 --- a/drivers/gpio/gpio-bcm2835.c +++ /dev/null @@ -1,162 +0,0 @@ -/* - * Author: Carlo Caione <carlo@carlocaione.org> - * - * Based on linux/arch/arm/mach-bcm2708/bcm2708_gpio.c - * - * 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. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - */ - -#include <common.h> -#include <errno.h> -#include <malloc.h> -#include <io.h> -#include <gpio.h> -#include <init.h> - -#define GPIOFSEL(x) (0x00+(x)*4) -#define GPIOSET(x) (0x1c+(x)*4) -#define GPIOCLR(x) (0x28+(x)*4) -#define GPIOLEV(x) (0x34+(x)*4) -#define GPIOEDS(x) (0x40+(x)*4) -#define GPIOREN(x) (0x4c+(x)*4) -#define GPIOFEN(x) (0x58+(x)*4) -#define GPIOHEN(x) (0x64+(x)*4) -#define GPIOLEN(x) (0x70+(x)*4) -#define GPIOAREN(x) (0x7c+(x)*4) -#define GPIOAFEN(x) (0x88+(x)*4) -#define GPIOUD(x) (0x94+(x)*4) -#define GPIOUDCLK(x) (0x98+(x)*4) - -enum { - GPIO_FSEL_INPUT, GPIO_FSEL_OUTPUT, - GPIO_FSEL_ALT5, GPIO_FSEL_ALT_4, - GPIO_FSEL_ALT0, GPIO_FSEL_ALT1, - GPIO_FSEL_ALT2, GPIO_FSEL_ALT3, -}; - -struct bcm2835_gpio_chip { - void __iomem *base; - struct gpio_chip chip; -}; - -static int bcm2835_set_function(struct gpio_chip *chip, unsigned gpio, int function) -{ - struct bcm2835_gpio_chip *bcmgpio = container_of(chip, struct bcm2835_gpio_chip, chip); - void __iomem *base = bcmgpio->base; - unsigned gpiodir; - unsigned gpio_bank = gpio / 10; - unsigned gpio_field_offset = (gpio - 10 * gpio_bank) * 3; - - gpiodir = readl(base + GPIOFSEL(gpio_bank)); - gpiodir &= ~(7 << gpio_field_offset); - gpiodir |= function << gpio_field_offset; - writel(gpiodir, base + GPIOFSEL(gpio_bank)); - gpiodir = readl(base + GPIOFSEL(gpio_bank)); - - return 0; -} - -static void bcm2835_gpio_set_value(struct gpio_chip *chip, unsigned gpio, int value) -{ - struct bcm2835_gpio_chip *bcmgpio = container_of(chip, struct bcm2835_gpio_chip, chip); - void __iomem *base = bcmgpio->base; - unsigned gpio_bank = gpio / 32; - unsigned gpio_field_offset = gpio % 32; - - if (value) - writel(1 << gpio_field_offset, base + GPIOSET(gpio_bank)); - else - writel(1 << gpio_field_offset, base + GPIOCLR(gpio_bank)); -} - -static int bcm2835_gpio_get_value(struct gpio_chip *chip, unsigned gpio) -{ - struct bcm2835_gpio_chip *bcmgpio = container_of(chip, struct bcm2835_gpio_chip, chip); - void __iomem *base = bcmgpio->base; - unsigned gpio_bank = gpio / 32; - unsigned gpio_field_offset = gpio % 32; - unsigned lev; - - lev = readl(base + GPIOLEV(gpio_bank)); - return 0x1 & (lev >> gpio_field_offset); -} - -static int bcm2835_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) -{ - return bcm2835_set_function(chip, gpio, GPIO_FSEL_INPUT); -} - -static int bcm2835_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int value) -{ - bcm2835_set_function(chip, gpio, GPIO_FSEL_OUTPUT); - bcm2835_gpio_set_value(chip, gpio, value); - - return 0; -} - -static struct gpio_ops bcm2835_gpio_ops = { - .direction_input = bcm2835_gpio_direction_input, - .direction_output = bcm2835_gpio_direction_output, - .get = bcm2835_gpio_get_value, - .set = bcm2835_gpio_set_value, -}; - -static int bcm2835_gpio_probe(struct device_d *dev) -{ - struct resource *iores; - struct bcm2835_gpio_chip *bcmgpio; - int ret; - - bcmgpio = xzalloc(sizeof(*bcmgpio)); - iores = dev_request_mem_resource(dev, 0); - if (IS_ERR(iores)) - return PTR_ERR(iores); - bcmgpio->base = IOMEM(iores->start); - bcmgpio->chip.ops = &bcm2835_gpio_ops; - bcmgpio->chip.base = 0; - bcmgpio->chip.ngpio = 54; - bcmgpio->chip.dev = dev; - - ret = gpiochip_add(&bcmgpio->chip); - if (ret) { - dev_err(dev, "couldn't add gpiochip, ret = %d\n", ret); - goto err; - } - dev_info(dev, "probed gpiochip%d with base %d\n", dev->id, bcmgpio->chip.base); - - return 0; - -err: - kfree(bcmgpio); - - return ret; -} - -static __maybe_unused struct of_device_id bcm2835_gpio_dt_ids[] = { - { - .compatible = "brcm,bcm2835-gpio", - }, { - /* sentinel */ - } -}; - -static struct driver_d bcm2835_gpio_driver = { - .name = "bcm2835-gpio", - .probe = bcm2835_gpio_probe, - .of_compatible = DRV_OF_COMPAT(bcm2835_gpio_dt_ids), -}; - -static int bcm2835_gpio_add(void) -{ - return platform_driver_register(&bcm2835_gpio_driver); -} -coredevice_initcall(bcm2835_gpio_add); |