+++ /dev/null
-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
-@@ -147,6 +147,13 @@ 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-$(CONFIG_GPIO_ARIZONA) += gpio-ariz
- obj-$(CONFIG_GPIO_ASPEED) += gpio-aspeed.o
- obj-$(CONFIG_GPIO_ATH79) += gpio-ath79.o
- obj-$(CONFIG_GPIO_BCM_KONA) += gpio-bcm-kona.o
-+obj-$(CONFIG_GPIO_BCM63XX) += gpio-bcm63xx.o
- obj-$(CONFIG_GPIO_BD70528) += gpio-bd70528.o
- obj-$(CONFIG_GPIO_BD9571MWV) += gpio-bd9571mwv.o
- obj-$(CONFIG_GPIO_BRCMSTB) += gpio-brcmstb.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");
projects / openwrt / staging / chunkeey.git / blobdiff