gpio: gemini: rename to match Faraday IP

The Gemini driver is actually a driver for the Faraday Technology
FTGPIO010 IP block. We rename the driver and the Kconfig symbol and
put in a a new compatible string for the Moxa ART SoC that is also
using this IP block.

Tested-by: Jonas Jensen <jonas.jensen@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 0 insertions, 236 deletions

diff --git a/drivers/gpio/gpio-gemini.c b/drivers/gpio/gpio-gemini.c
deleted file mode 100644
index 962485163b7f..000000000000
--- a/drivers/gpio/gpio-gemini.c
+++ /dev/null
@@ -1,236 +0,0 @@
-/*
- * Gemini gpiochip and interrupt routines
- * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org>
- *
- * Based on arch/arm/mach-gemini/gpio.c:
- * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
- *
- * Based on plat-mxc/gpio.c:
- * MXC GPIO support. (c) 2008 Daniel Mack <daniel@caiaq.de>
- * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
- */
-#include <linux/gpio/driver.h>
-#include <linux/io.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-#include <linux/of_gpio.h>
-#include <linux/bitops.h>
-
-/* GPIO registers definition */
-#define GPIO_DATA_OUT		0x00
-#define GPIO_DATA_IN		0x04
-#define GPIO_DIR		0x08
-#define GPIO_DATA_SET		0x10
-#define GPIO_DATA_CLR		0x14
-#define GPIO_PULL_EN		0x18
-#define GPIO_PULL_TYPE		0x1C
-#define GPIO_INT_EN		0x20
-#define GPIO_INT_STAT		0x24
-#define GPIO_INT_MASK		0x2C
-#define GPIO_INT_CLR		0x30
-#define GPIO_INT_TYPE		0x34
-#define GPIO_INT_BOTH_EDGE	0x38
-#define GPIO_INT_LEVEL		0x3C
-#define GPIO_DEBOUNCE_EN	0x40
-#define GPIO_DEBOUNCE_PRESCALE	0x44
-
-/**
- * struct gemini_gpio - Gemini GPIO state container
- * @dev: containing device for this instance
- * @gc: gpiochip for this instance
- */
-struct gemini_gpio {
-	struct device *dev;
-	struct gpio_chip gc;
-	void __iomem *base;
-};
-
-static void gemini_gpio_ack_irq(struct irq_data *d)
-{
-	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
-	struct gemini_gpio *g = gpiochip_get_data(gc);
-
-	writel(BIT(irqd_to_hwirq(d)), g->base + GPIO_INT_CLR);
-}
-
-static void gemini_gpio_mask_irq(struct irq_data *d)
-{
-	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
-	struct gemini_gpio *g = gpiochip_get_data(gc);
-	u32 val;
-
-	val = readl(g->base + GPIO_INT_EN);
-	val &= ~BIT(irqd_to_hwirq(d));
-	writel(val, g->base + GPIO_INT_EN);
-}
-
-static void gemini_gpio_unmask_irq(struct irq_data *d)
-{
-	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
-	struct gemini_gpio *g = gpiochip_get_data(gc);
-	u32 val;
-
-	val = readl(g->base + GPIO_INT_EN);
-	val |= BIT(irqd_to_hwirq(d));
-	writel(val, g->base + GPIO_INT_EN);
-}
-
-static int gemini_gpio_set_irq_type(struct irq_data *d, unsigned int type)
-{
-	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
-	struct gemini_gpio *g = gpiochip_get_data(gc);
-	u32 mask = BIT(irqd_to_hwirq(d));
-	u32 reg_both, reg_level, reg_type;
-
-	reg_type = readl(g->base + GPIO_INT_TYPE);
-	reg_level = readl(g->base + GPIO_INT_LEVEL);
-	reg_both = readl(g->base + GPIO_INT_BOTH_EDGE);
-
-	switch (type) {
-	case IRQ_TYPE_EDGE_BOTH:
-		irq_set_handler_locked(d, handle_edge_irq);
-		reg_type &= ~mask;
-		reg_both |= mask;
-		break;
-	case IRQ_TYPE_EDGE_RISING:
-		irq_set_handler_locked(d, handle_edge_irq);
-		reg_type &= ~mask;
-		reg_both &= ~mask;
-		reg_level &= ~mask;
-		break;
-	case IRQ_TYPE_EDGE_FALLING:
-		irq_set_handler_locked(d, handle_edge_irq);
-		reg_type &= ~mask;
-		reg_both &= ~mask;
-		reg_level |= mask;
-		break;
-	case IRQ_TYPE_LEVEL_HIGH:
-		irq_set_handler_locked(d, handle_level_irq);
-		reg_type |= mask;
-		reg_level &= ~mask;
-		break;
-	case IRQ_TYPE_LEVEL_LOW:
-		irq_set_handler_locked(d, handle_level_irq);
-		reg_type |= mask;
-		reg_level |= mask;
-		break;
-	default:
-		irq_set_handler_locked(d, handle_bad_irq);
-		return -EINVAL;
-	}
-
-	writel(reg_type, g->base + GPIO_INT_TYPE);
-	writel(reg_level, g->base + GPIO_INT_LEVEL);
-	writel(reg_both, g->base + GPIO_INT_BOTH_EDGE);
-
-	gemini_gpio_ack_irq(d);
-
-	return 0;
-}
-
-static struct irq_chip gemini_gpio_irqchip = {
-	.name = "GPIO",
-	.irq_ack = gemini_gpio_ack_irq,
-	.irq_mask = gemini_gpio_mask_irq,
-	.irq_unmask = gemini_gpio_unmask_irq,
-	.irq_set_type = gemini_gpio_set_irq_type,
-};
-
-static void gemini_gpio_irq_handler(struct irq_desc *desc)
-{
-	struct gpio_chip *gc = irq_desc_get_handler_data(desc);
-	struct gemini_gpio *g = gpiochip_get_data(gc);
-	struct irq_chip *irqchip = irq_desc_get_chip(desc);
-	int offset;
-	unsigned long stat;
-
-	chained_irq_enter(irqchip, desc);
-
-	stat = readl(g->base + GPIO_INT_STAT);
-	if (stat)
-		for_each_set_bit(offset, &stat, gc->ngpio)
-			generic_handle_irq(irq_find_mapping(gc->irqdomain,
-							    offset));
-
-	chained_irq_exit(irqchip, desc);
-}
-
-static int gemini_gpio_probe(struct platform_device *pdev)
-{
-	struct device *dev = &pdev->dev;
-	struct resource *res;
-	struct gemini_gpio *g;
-	int irq;
-	int ret;
-
-	g = devm_kzalloc(dev, sizeof(*g), GFP_KERNEL);
-	if (!g)
-		return -ENOMEM;
-
-	g->dev = dev;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	g->base = devm_ioremap_resource(dev, res);
-	if (IS_ERR(g->base))
-		return PTR_ERR(g->base);
-
-	irq = platform_get_irq(pdev, 0);
-	if (!irq)
-		return -EINVAL;
-
-	ret = bgpio_init(&g->gc, dev, 4,
-			 g->base + GPIO_DATA_IN,
-			 g->base + GPIO_DATA_SET,
-			 g->base + GPIO_DATA_CLR,
-			 g->base + GPIO_DIR,
-			 NULL,
-			 0);
-	if (ret) {
-		dev_err(dev, "unable to init generic GPIO\n");
-		return ret;
-	}
-	g->gc.label = "Gemini";
-	g->gc.base = -1;
-	g->gc.parent = dev;
-	g->gc.owner = THIS_MODULE;
-	/* ngpio is set by bgpio_init() */
-
-	ret = devm_gpiochip_add_data(dev, &g->gc, g);
-	if (ret)
-		return ret;
-
-	/* Disable, unmask and clear all interrupts */
-	writel(0x0, g->base + GPIO_INT_EN);
-	writel(0x0, g->base + GPIO_INT_MASK);
-	writel(~0x0, g->base + GPIO_INT_CLR);
-
-	ret = gpiochip_irqchip_add(&g->gc, &gemini_gpio_irqchip,
-				   0, handle_bad_irq,
-				   IRQ_TYPE_NONE);
-	if (ret) {
-		dev_info(dev, "could not add irqchip\n");
-		return ret;
-	}
-	gpiochip_set_chained_irqchip(&g->gc, &gemini_gpio_irqchip,
-				     irq, gemini_gpio_irq_handler);
-
-	dev_info(dev, "Gemini GPIO @%p registered\n", g->base);
-
-	return 0;
-}
-
-static const struct of_device_id gemini_gpio_of_match[] = {
-	{
-		.compatible = "cortina,gemini-gpio",
-	},
-	{},
-};
-
-static struct platform_driver gemini_gpio_driver = {
-	.driver = {
-		.name		= "gemini-gpio",
-		.of_match_table = of_match_ptr(gemini_gpio_of_match),
-	},
-	.probe	= gemini_gpio_probe,
-};
-builtin_platform_driver(gemini_gpio_driver);