coccinelle: alloc_cast: drop removed allocatorsgrafted

- pci_alloc_consistent() and pci_zalloc_consistent() were removed by
  commit 7968778914e5
  ("PCI: Remove the deprecated "pci-dma-compat.h" API")

- kmem_alloc() was removed by commit f078d4ea8276
  ("xfs: convert kmem_alloc() to kmalloc()")

- kmem_zalloc() was removed by commit 10634530f7ba
  ("xfs: convert kmem_zalloc() to kzalloc()")

- kmem_zone_alloc() and kmem_zone_zalloc() were removed by commit
  bae633a4a283 ("xfs: remove xfs_zone_{alloc,zalloc} helpers")

So drop them from the rules.

No functional change.

Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>

1 files changed, 328 insertions, 0 deletions

diff --git a/drivers/gpio/gpio-cadence.c b/drivers/gpio/gpio-cadence.c
new file mode 100644
index 000000000..d7790fc35
--- /dev/null
+++ b/drivers/gpio/gpio-cadence.c
@@ -0,0 +1,328 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Copyright 2017-2018 Cadence
+ * Copyright (C) 2025 Axiado Corporation.
+ *
+ * Authors:
+ *  Jan Kotas <jank@cadence.com>
+ *  Boris Brezillon <boris.brezillon@free-electrons.com>
+ */
+
+#include <linux/cleanup.h>
+#include <linux/clk.h>
+#include <linux/gpio/driver.h>
+#include <linux/interrupt.h>
+#include <linux/gpio/generic.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/spinlock.h>
+
+#define CDNS_GPIO_BYPASS_MODE		0x00
+#define CDNS_GPIO_DIRECTION_MODE	0x04
+#define CDNS_GPIO_OUTPUT_EN		0x08
+#define CDNS_GPIO_OUTPUT_VALUE		0x0c
+#define CDNS_GPIO_INPUT_VALUE		0x10
+#define CDNS_GPIO_IRQ_MASK		0x14
+#define CDNS_GPIO_IRQ_EN		0x18
+#define CDNS_GPIO_IRQ_DIS		0x1c
+#define CDNS_GPIO_IRQ_STATUS		0x20
+#define CDNS_GPIO_IRQ_TYPE		0x24
+#define CDNS_GPIO_IRQ_VALUE		0x28
+#define CDNS_GPIO_IRQ_ANY_EDGE		0x2c
+
+struct cdns_gpio_quirks {
+	bool skip_init;
+};
+
+struct cdns_gpio_chip {
+	struct gpio_generic_chip gen_gc;
+	void __iomem *regs;
+	u32 bypass_orig;
+	const struct cdns_gpio_quirks *quirks;
+};
+
+static const struct cdns_gpio_quirks cdns_default_quirks = {
+	.skip_init = false,
+};
+
+static const struct cdns_gpio_quirks ax3000_gpio_quirks = {
+	.skip_init = true,
+};
+
+static int cdns_gpio_request(struct gpio_chip *chip, unsigned int offset)
+{
+	struct cdns_gpio_chip *cgpio = gpiochip_get_data(chip);
+
+	guard(gpio_generic_lock)(&cgpio->gen_gc);
+
+	iowrite32(ioread32(cgpio->regs + CDNS_GPIO_BYPASS_MODE) & ~BIT(offset),
+		  cgpio->regs + CDNS_GPIO_BYPASS_MODE);
+
+	return 0;
+}
+
+static void cdns_gpio_free(struct gpio_chip *chip, unsigned int offset)
+{
+	struct cdns_gpio_chip *cgpio = gpiochip_get_data(chip);
+
+	guard(gpio_generic_lock)(&cgpio->gen_gc);
+
+	iowrite32(ioread32(cgpio->regs + CDNS_GPIO_BYPASS_MODE) |
+		  (BIT(offset) & cgpio->bypass_orig),
+		  cgpio->regs + CDNS_GPIO_BYPASS_MODE);
+}
+
+static void cdns_gpio_irq_mask(struct irq_data *d)
+{
+	struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
+	struct cdns_gpio_chip *cgpio = gpiochip_get_data(chip);
+
+	iowrite32(BIT(d->hwirq), cgpio->regs + CDNS_GPIO_IRQ_DIS);
+	gpiochip_disable_irq(chip, irqd_to_hwirq(d));
+}
+
+static void cdns_gpio_irq_unmask(struct irq_data *d)
+{
+	struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
+	struct cdns_gpio_chip *cgpio = gpiochip_get_data(chip);
+
+	gpiochip_enable_irq(chip, irqd_to_hwirq(d));
+	iowrite32(BIT(d->hwirq), cgpio->regs + CDNS_GPIO_IRQ_EN);
+}
+
+static int cdns_gpio_irq_set_type(struct irq_data *d, unsigned int type)
+{
+	struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
+	struct cdns_gpio_chip *cgpio = gpiochip_get_data(chip);
+	u32 int_value;
+	u32 int_type;
+	u32 int_any;
+	u32 mask = BIT(d->hwirq);
+	int ret = 0;
+
+	guard(gpio_generic_lock)(&cgpio->gen_gc);
+
+	int_value = ioread32(cgpio->regs + CDNS_GPIO_IRQ_VALUE) & ~mask;
+	int_type = ioread32(cgpio->regs + CDNS_GPIO_IRQ_TYPE) & ~mask;
+	/*
+	 * Interrupt polarity and trigger behaviour is configured like this:
+	 *
+	 * (type, value)
+	 * (0, 0) = Falling edge triggered
+	 * (0, 1) = Rising edge triggered
+	 * (1, 0) = Low level triggered
+	 * (1, 1) = High level triggered
+	 */
+	int_any = ioread32(cgpio->regs + CDNS_GPIO_IRQ_ANY_EDGE) & ~mask;
+
+	if (type == IRQ_TYPE_LEVEL_HIGH) {
+		int_type |= mask;
+		int_value |= mask;
+	} else if (type == IRQ_TYPE_LEVEL_LOW) {
+		int_type |= mask;
+	} else if (type == IRQ_TYPE_EDGE_RISING) {
+		int_value |= mask;
+	} else if (type == IRQ_TYPE_EDGE_FALLING) {
+		/* edge trigger, int_value remains cleared for falling */
+	} else if (type == IRQ_TYPE_EDGE_BOTH) {
+		int_any |= mask;
+	} else {
+		return -EINVAL;
+	}
+
+	iowrite32(int_value, cgpio->regs + CDNS_GPIO_IRQ_VALUE);
+	iowrite32(int_type, cgpio->regs + CDNS_GPIO_IRQ_TYPE);
+	iowrite32(int_any, cgpio->regs + CDNS_GPIO_IRQ_ANY_EDGE);
+
+	return ret;
+}
+
+static void cdns_gpio_irq_handler(struct irq_desc *desc)
+{
+	struct gpio_chip *chip = irq_desc_get_handler_data(desc);
+	struct cdns_gpio_chip *cgpio = gpiochip_get_data(chip);
+	struct irq_chip *irqchip = irq_desc_get_chip(desc);
+	unsigned long status;
+	int hwirq;
+
+	chained_irq_enter(irqchip, desc);
+
+	status = ioread32(cgpio->regs + CDNS_GPIO_IRQ_STATUS) &
+		~ioread32(cgpio->regs + CDNS_GPIO_IRQ_MASK);
+
+	for_each_set_bit(hwirq, &status, chip->ngpio)
+		generic_handle_domain_irq(chip->irq.domain, hwirq);
+
+	chained_irq_exit(irqchip, desc);
+}
+
+static const struct irq_chip cdns_gpio_irqchip = {
+	.name		= "cdns-gpio",
+	.irq_mask	= cdns_gpio_irq_mask,
+	.irq_unmask	= cdns_gpio_irq_unmask,
+	.irq_set_type	= cdns_gpio_irq_set_type,
+	.flags		= IRQCHIP_IMMUTABLE,
+	GPIOCHIP_IRQ_RESOURCE_HELPERS,
+};
+
+static const struct of_device_id cdns_of_ids[] = {
+	{
+		.compatible = "axiado,ax3000-gpio",
+		.data = &ax3000_gpio_quirks
+	},
+	{
+		.compatible = "cdns,gpio-r1p02",
+		.data = &cdns_default_quirks
+	},
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, cdns_of_ids);
+
+static int cdns_gpio_probe(struct platform_device *pdev)
+{
+	struct gpio_generic_chip_config config = { };
+	struct cdns_gpio_chip *cgpio;
+	int ret, irq;
+	u32 dir_prev;
+	u32 num_gpios = 32;
+	struct clk *clk;
+
+	cgpio = devm_kzalloc(&pdev->dev, sizeof(*cgpio), GFP_KERNEL);
+	if (!cgpio)
+		return -ENOMEM;
+
+	cgpio->regs = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(cgpio->regs))
+		return PTR_ERR(cgpio->regs);
+
+	of_property_read_u32(pdev->dev.of_node, "ngpios", &num_gpios);
+
+	if (num_gpios > 32) {
+		dev_err(&pdev->dev, "ngpios must be less or equal 32\n");
+		return -EINVAL;
+	}
+
+	cgpio->quirks = device_get_match_data(&pdev->dev);
+	if (!cgpio->quirks)
+		cgpio->quirks = &cdns_default_quirks;
+
+	/*
+	 * Set all pins as inputs by default, otherwise:
+	 * gpiochip_lock_as_irq:
+	 * tried to flag a GPIO set as output for IRQ
+	 * Generic GPIO driver stores the direction value internally,
+	 * so it needs to be changed before gpio_generic_chip_init() is called.
+	 */
+	dir_prev = ioread32(cgpio->regs + CDNS_GPIO_DIRECTION_MODE);
+
+	/*
+	 * The AX3000 platform performs the required configuration at boot time
+	 * before Linux boots, so this quirk disables pinmux initialization.
+	 */
+	if (!cgpio->quirks->skip_init) {
+		iowrite32(GENMASK(num_gpios - 1, 0),
+			cgpio->regs + CDNS_GPIO_DIRECTION_MODE);
+	}
+
+	config.dev = &pdev->dev;
+	config.sz = 4;
+	config.dat = cgpio->regs + CDNS_GPIO_INPUT_VALUE;
+	config.set = cgpio->regs + CDNS_GPIO_OUTPUT_VALUE;
+	config.dirin = cgpio->regs + CDNS_GPIO_DIRECTION_MODE;
+	config.flags = GPIO_GENERIC_READ_OUTPUT_REG_SET;
+
+	ret = gpio_generic_chip_init(&cgpio->gen_gc, &config);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to register generic gpio, %d\n",
+			ret);
+		goto err_revert_dir;
+	}
+
+	cgpio->gen_gc.gc.label = dev_name(&pdev->dev);
+	cgpio->gen_gc.gc.ngpio = num_gpios;
+	cgpio->gen_gc.gc.parent = &pdev->dev;
+	cgpio->gen_gc.gc.base = -1;
+	cgpio->gen_gc.gc.owner = THIS_MODULE;
+	cgpio->gen_gc.gc.request = cdns_gpio_request;
+	cgpio->gen_gc.gc.free = cdns_gpio_free;
+
+	clk = devm_clk_get_enabled(&pdev->dev, NULL);
+	if (IS_ERR(clk)) {
+		ret = PTR_ERR(clk);
+		dev_err(&pdev->dev,
+			"Failed to retrieve peripheral clock, %d\n", ret);
+		goto err_revert_dir;
+	}
+
+	/*
+	 * Optional irq_chip support
+	 */
+	irq = platform_get_irq(pdev, 0);
+	if (irq >= 0) {
+		struct gpio_irq_chip *girq;
+
+		girq = &cgpio->gen_gc.gc.irq;
+		gpio_irq_chip_set_chip(girq, &cdns_gpio_irqchip);
+		girq->parent_handler = cdns_gpio_irq_handler;
+		girq->num_parents = 1;
+		girq->parents = devm_kcalloc(&pdev->dev, 1,
+					     sizeof(*girq->parents),
+					     GFP_KERNEL);
+		if (!girq->parents) {
+			ret = -ENOMEM;
+			goto err_revert_dir;
+		}
+		girq->parents[0] = irq;
+		girq->default_type = IRQ_TYPE_NONE;
+		girq->handler = handle_level_irq;
+	}
+
+	ret = devm_gpiochip_add_data(&pdev->dev, &cgpio->gen_gc.gc, cgpio);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Could not register gpiochip, %d\n", ret);
+		goto err_revert_dir;
+	}
+
+	cgpio->bypass_orig = ioread32(cgpio->regs + CDNS_GPIO_BYPASS_MODE);
+
+	/*
+	 * Enable gpio outputs, ignored for input direction
+	 */
+	if (!cgpio->quirks->skip_init) {
+		iowrite32(GENMASK(num_gpios - 1, 0),
+			cgpio->regs + CDNS_GPIO_OUTPUT_EN);
+		iowrite32(0, cgpio->regs + CDNS_GPIO_BYPASS_MODE);
+	}
+
+	platform_set_drvdata(pdev, cgpio);
+	return 0;
+
+err_revert_dir:
+	iowrite32(dir_prev, cgpio->regs + CDNS_GPIO_DIRECTION_MODE);
+
+	return ret;
+}
+
+static void cdns_gpio_remove(struct platform_device *pdev)
+{
+	struct cdns_gpio_chip *cgpio = platform_get_drvdata(pdev);
+
+	iowrite32(cgpio->bypass_orig, cgpio->regs + CDNS_GPIO_BYPASS_MODE);
+}
+
+static struct platform_driver cdns_gpio_driver = {
+	.driver = {
+		.name = "cdns-gpio",
+		.of_match_table = cdns_of_ids,
+	},
+	.probe = cdns_gpio_probe,
+	.remove = cdns_gpio_remove,
+};
+module_platform_driver(cdns_gpio_driver);
+
+MODULE_AUTHOR("Jan Kotas <jank@cadence.com>");
+MODULE_DESCRIPTION("Cadence GPIO driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:cdns-gpio");