diff options
Diffstat (limited to 'target/linux/bcm63xx/patches-4.19/374-gpio-add-a-simple-GPIO-driver-for-bcm63xx.patch')
| -rw-r--r-- | target/linux/bcm63xx/patches-4.19/374-gpio-add-a-simple-GPIO-driver-for-bcm63xx.patch | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/target/linux/bcm63xx/patches-4.19/374-gpio-add-a-simple-GPIO-driver-for-bcm63xx.patch b/target/linux/bcm63xx/patches-4.19/374-gpio-add-a-simple-GPIO-driver-for-bcm63xx.patch new file mode 100644 index 0000000000..6307d56407 --- /dev/null +++ b/target/linux/bcm63xx/patches-4.19/374-gpio-add-a-simple-GPIO-driver-for-bcm63xx.patch @@ -0,0 +1,178 @@ +From dbe94a8daaa63ef81b7414f2a17bca8e36dd6daa Mon Sep 17 00:00:00 2001 +From: Jonas Gorski <jogo@openwrt.org> +Date: Fri, 20 Feb 2015 19:55:32 +0100 +Subject: [PATCH 1/6] gpio: add a simple GPIO driver for bcm63xx + + +Signed-off-by: Jonas Gorski <jogo@openwrt.org> +--- + drivers/gpio/Kconfig | 8 +++ + drivers/gpio/Makefile | 1 + + drivers/gpio/gpio-bcm63xx.c | 135 +++++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 131 insertions(+) + create mode 100644 drivers/gpio/gpio-bcm63xx.c + +--- a/drivers/gpio/Kconfig ++++ b/drivers/gpio/Kconfig +@@ -151,6 +151,13 @@ config GPIO_BCM_KONA + help + Turn on GPIO support for Broadcom "Kona" chips. + ++config GPIO_BCM63XX ++ bool "Broadcom BCM63XX GPIO" ++ depends on MIPS || COMPILE_TEST ++ select GPIO_GENERIC ++ help ++ Turn on GPIO support for Broadcom BCM63XX xDSL chips. ++ + config GPIO_BRCMSTB + tristate "BRCMSTB GPIO support" + default y if (ARCH_BRCMSTB || BMIPS_GENERIC) +--- a/drivers/gpio/Makefile ++++ b/drivers/gpio/Makefile +@@ -34,6 +34,7 @@ obj-$(CONFIG_GPIO_ATH79) += gpio-ath79.o + obj-$(CONFIG_GPIO_ASPEED) += gpio-aspeed.o + obj-$(CONFIG_GPIO_RASPBERRYPI_EXP) += gpio-raspberrypi-exp.o + obj-$(CONFIG_GPIO_BCM_KONA) += gpio-bcm-kona.o ++obj-$(CONFIG_GPIO_BCM63XX) += gpio-bcm63xx.o + obj-$(CONFIG_GPIO_BD9571MWV) += gpio-bd9571mwv.o + obj-$(CONFIG_GPIO_BRCMSTB) += gpio-brcmstb.o + obj-$(CONFIG_GPIO_BT8XX) += gpio-bt8xx.o +--- /dev/null ++++ b/drivers/gpio/gpio-bcm63xx.c +@@ -0,0 +1,135 @@ ++/* ++ * Driver for BCM63XX memory-mapped GPIO controllers, based on ++ * Generic driver for memory-mapped GPIO controllers. ++ * ++ * Copyright 2008 MontaVista Software, Inc. ++ * Copyright 2008,2010 Anton Vorontsov <cbouatmailru@gmail.com> ++ * Copyright 2015 Jonas Gorski <jogo@openwrt.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. ++ */ ++ ++#include <linux/init.h> ++#include <linux/err.h> ++#include <linux/bug.h> ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/spinlock.h> ++#include <linux/compiler.h> ++#include <linux/types.h> ++#include <linux/errno.h> ++#include <linux/log2.h> ++#include <linux/ioport.h> ++#include <linux/io.h> ++#include <linux/gpio.h> ++#include <linux/gpio/driver.h> ++#include <linux/slab.h> ++#include <linux/platform_device.h> ++#include <linux/mod_devicetable.h> ++#include <linux/of.h> ++#include <linux/of_irq.h> ++#include <linux/of_gpio.h> ++ ++static int bcm63xx_gpio_to_irq(struct gpio_chip *chip, unsigned gpio) ++{ ++ char irq_name[7]; /* "gpioXX" */ ++ ++ sprintf(irq_name, "gpio%d", gpio); ++ return of_irq_get_byname(chip->of_node, irq_name); ++} ++ ++static int bcm63xx_gpio_probe(struct platform_device *pdev) ++{ ++ struct device *dev = &pdev->dev; ++ struct resource *dat_r, *dirout_r; ++ void __iomem *dat; ++ void __iomem *dirout; ++ unsigned long sz; ++ int err; ++ struct gpio_chip *gc; ++ struct bgpio_pdata *pdata = dev_get_platdata(dev); ++ ++ dirout_r = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ dat_r = platform_get_resource(pdev, IORESOURCE_MEM, 1); ++ if (!dat_r || !dirout_r) ++ return -EINVAL; ++ ++ if (resource_size(dat_r) != resource_size(dirout_r)) ++ return -EINVAL; ++ ++ sz = resource_size(dat_r); ++ ++ dat = devm_ioremap_resource(dev, dat_r); ++ if (IS_ERR(dat)) ++ return PTR_ERR(dat); ++ ++ dirout = devm_ioremap_resource(dev, dirout_r); ++ if (IS_ERR(dirout)) ++ return PTR_ERR(dirout); ++ ++ gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL); ++ if (!gc) ++ return -ENOMEM; ++ ++ err = bgpio_init(gc, dev, sz, dat, NULL, NULL, dirout, NULL, ++ BGPIOF_BIG_ENDIAN_BYTE_ORDER); ++ if (err) ++ return err; ++ ++ platform_set_drvdata(pdev, gc); ++ ++ if (dev->of_node) { ++ int id = of_alias_get_id(dev->of_node, "gpio"); ++ u32 ngpios; ++ ++ if (id >= 0) ++ gc->label = devm_kasprintf(dev, GFP_KERNEL, ++ "bcm63xx-gpio.%d", id); ++ ++ if (!of_property_read_u32(dev->of_node, "ngpios", &ngpios)) ++ gc->ngpio = ngpios; ++ ++ if (of_get_property(dev->of_node, "interrupt-names", NULL)) ++ gc->to_irq = bcm63xx_gpio_to_irq; ++ ++ } else if (pdata) { ++ gc->base = pdata->base; ++ if (pdata->ngpio > 0) ++ gc->ngpio = pdata->ngpio; ++ } ++ ++ return gpiochip_add(gc); ++} ++ ++static int bcm63xx_gpio_remove(struct platform_device *pdev) ++{ ++ struct gpio_chip *gc = platform_get_drvdata(pdev); ++ ++ gpiochip_remove(gc); ++ return 0; ++} ++ ++#ifdef CONFIG_OF ++static struct of_device_id bcm63xx_gpio_of_match[] = { ++ { .compatible = "brcm,bcm6345-gpio" }, ++ { }, ++}; ++#endif ++ ++static struct platform_driver bcm63xx_gpio_driver = { ++ .probe = bcm63xx_gpio_probe, ++ .remove = bcm63xx_gpio_remove, ++ .driver = { ++ .name = "bcm63xx-gpio", ++ .of_match_table = of_match_ptr(bcm63xx_gpio_of_match), ++ }, ++}; ++ ++module_platform_driver(bcm63xx_gpio_driver); ++ ++MODULE_DESCRIPTION("Driver for BCM63XX memory-mapped GPIO controllers"); ++MODULE_AUTHOR("Jonas Gorski <jogo@openwrt.org>"); ++MODULE_LICENSE("GPL"); |