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path: root/target/linux/mcs814x/files-3.3/drivers/gpio/gpio-mcs814x.c
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Diffstat (limited to 'target/linux/mcs814x/files-3.3/drivers/gpio/gpio-mcs814x.c')
-rw-r--r--target/linux/mcs814x/files-3.3/drivers/gpio/gpio-mcs814x.c148
1 files changed, 0 insertions, 148 deletions
diff --git a/target/linux/mcs814x/files-3.3/drivers/gpio/gpio-mcs814x.c b/target/linux/mcs814x/files-3.3/drivers/gpio/gpio-mcs814x.c
deleted file mode 100644
index f138229..0000000
--- a/target/linux/mcs814x/files-3.3/drivers/gpio/gpio-mcs814x.c
+++ /dev/null
@@ -1,148 +0,0 @@
-/*
- * Moschip MCS814x GPIO support
- *
- * Copyright (C) 2012, Florian Fainelli <florian@openwrt.org>
- *
- * Licensed under the GPLv2
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/platform_device.h>
-#include <linux/gpio.h>
-#include <linux/io.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-
-struct mcs814x_gpio_chip {
- void __iomem *regs;
- struct gpio_chip chip;
-};
-
-#define GPIO_PIN 0x00
-#define GPIO_DIR 0x04
-
-#define to_mcs814x_gpio_chip(x) container_of(x, struct mcs814x_gpio_chip, chip)
-
-static int mcs814x_gpio_get(struct gpio_chip *chip, unsigned offset)
-{
- struct mcs814x_gpio_chip *mcs814x = to_mcs814x_gpio_chip(chip);
-
- return readl_relaxed(mcs814x->regs + GPIO_PIN) & (1 << offset);
-}
-
-static void mcs814x_gpio_set(struct gpio_chip *chip,
- unsigned offset, int value)
-{
- struct mcs814x_gpio_chip *mcs814x = to_mcs814x_gpio_chip(chip);
- u32 mask;
-
- mask = readl_relaxed(mcs814x->regs + GPIO_PIN);
- if (value)
- mask |= (1 << offset);
- else
- mask &= ~(1 << offset);
- writel_relaxed(mask, mcs814x->regs + GPIO_PIN);
-}
-
-static int mcs814x_gpio_direction_output(struct gpio_chip *chip,
- unsigned offset, int value)
-{
- struct mcs814x_gpio_chip *mcs814x = to_mcs814x_gpio_chip(chip);
- u32 mask;
-
- mask = readl_relaxed(mcs814x->regs + GPIO_DIR);
- mask &= ~(1 << offset);
- writel_relaxed(mask, mcs814x->regs + GPIO_DIR);
-
- return 0;
-}
-
-static int mcs814x_gpio_direction_input(struct gpio_chip *chip,
- unsigned offset)
-{
- struct mcs814x_gpio_chip *mcs814x = to_mcs814x_gpio_chip(chip);
- u32 mask;
-
- mask = readl_relaxed(mcs814x->regs + GPIO_DIR);
- mask |= (1 << offset);
- writel_relaxed(mask, mcs814x->regs + GPIO_DIR);
-
- return 0;
-}
-
-static int __devinit mcs814x_gpio_probe(struct platform_device *pdev)
-{
- struct resource *res;
- struct mcs814x_gpio_chip *mcs814x_chip;
- int ret;
- const unsigned int *num_gpios;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENODEV;
-
- num_gpios = of_get_property(pdev->dev.of_node, "num-gpios", NULL);
- if (!num_gpios)
- dev_err(&pdev->dev, "FIXME: no num-gpios property\n");
-
- mcs814x_chip = kzalloc(sizeof(*mcs814x_chip), GFP_KERNEL);
- if (!mcs814x_chip)
- return -ENOMEM;
-
- mcs814x_chip->regs = devm_request_and_ioremap(&pdev->dev, res);
- if (!mcs814x_chip->regs) {
- ret = -ENOMEM;
- goto out;
- }
-
- platform_set_drvdata(pdev, mcs814x_chip);
-
-#ifdef CONFIG_OF_GPIO
- mcs814x_chip->chip.of_node = pdev->dev.of_node;
-#endif
-
- mcs814x_chip->chip.label = pdev->name;
- mcs814x_chip->chip.get = mcs814x_gpio_get;
- mcs814x_chip->chip.set = mcs814x_gpio_set;
- mcs814x_chip->chip.direction_input = mcs814x_gpio_direction_input;
- mcs814x_chip->chip.direction_output = mcs814x_gpio_direction_output;
- mcs814x_chip->chip.ngpio = be32_to_cpup(num_gpios);
- /* we want dynamic base allocation */
- mcs814x_chip->chip.base = -1;
-
- ret = gpiochip_add(&mcs814x_chip->chip);
- if (ret) {
- dev_err(&pdev->dev, "failed to register gpiochip\n");
- goto out;
- }
-
- return 0;
-
-out:
- platform_set_drvdata(pdev, NULL);
- kfree(mcs814x_chip);
- return ret;
-}
-
-static struct of_device_id mcs814x_gpio_ids[] __devinitdata = {
- { .compatible = "moschip,mcs814x-gpio" },
- { /* sentinel */ },
-};
-
-static struct platform_driver mcs814x_gpio_driver = {
- .driver = {
- .name = "mcs814x-gpio",
- .owner = THIS_MODULE,
- .of_match_table = mcs814x_gpio_ids,
- },
- .probe = mcs814x_gpio_probe,
-};
-
-int __init mcs814x_gpio_init(void)
-{
- return platform_driver_register(&mcs814x_gpio_driver);
-}
-postcore_initcall(mcs814x_gpio_init);