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Diffstat (limited to 'arch/arm/mach-pxa/pxa_cplds_irqs.c')
-rw-r--r--arch/arm/mach-pxa/pxa_cplds_irqs.c200
1 files changed, 0 insertions, 200 deletions
diff --git a/arch/arm/mach-pxa/pxa_cplds_irqs.c b/arch/arm/mach-pxa/pxa_cplds_irqs.c
deleted file mode 100644
index eda5a47d7fbb..000000000000
--- a/arch/arm/mach-pxa/pxa_cplds_irqs.c
+++ /dev/null
@@ -1,200 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Intel Reference Systems cplds
- *
- * Copyright (C) 2014 Robert Jarzmik
- *
- * Cplds motherboard driver, supporting lubbock and mainstone SoC board.
- */
-
-#include <linux/bitops.h>
-#include <linux/gpio.h>
-#include <linux/gpio/consumer.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/irq.h>
-#include <linux/irqdomain.h>
-#include <linux/mfd/core.h>
-#include <linux/module.h>
-#include <linux/of_platform.h>
-
-#define FPGA_IRQ_MASK_EN 0x0
-#define FPGA_IRQ_SET_CLR 0x10
-
-#define CPLDS_NB_IRQ 32
-
-struct cplds {
- void __iomem *base;
- int irq;
- unsigned int irq_mask;
- struct gpio_desc *gpio0;
- struct irq_domain *irqdomain;
-};
-
-static irqreturn_t cplds_irq_handler(int in_irq, void *d)
-{
- struct cplds *fpga = d;
- unsigned long pending;
- unsigned int bit;
-
- do {
- pending = readl(fpga->base + FPGA_IRQ_SET_CLR) & fpga->irq_mask;
- for_each_set_bit(bit, &pending, CPLDS_NB_IRQ)
- generic_handle_domain_irq(fpga->irqdomain, bit);
- } while (pending);
-
- return IRQ_HANDLED;
-}
-
-static void cplds_irq_mask(struct irq_data *d)
-{
- struct cplds *fpga = irq_data_get_irq_chip_data(d);
- unsigned int cplds_irq = irqd_to_hwirq(d);
- unsigned int bit = BIT(cplds_irq);
-
- fpga->irq_mask &= ~bit;
- writel(fpga->irq_mask, fpga->base + FPGA_IRQ_MASK_EN);
-}
-
-static void cplds_irq_unmask(struct irq_data *d)
-{
- struct cplds *fpga = irq_data_get_irq_chip_data(d);
- unsigned int cplds_irq = irqd_to_hwirq(d);
- unsigned int set, bit = BIT(cplds_irq);
-
- set = readl(fpga->base + FPGA_IRQ_SET_CLR);
- writel(set & ~bit, fpga->base + FPGA_IRQ_SET_CLR);
-
- fpga->irq_mask |= bit;
- writel(fpga->irq_mask, fpga->base + FPGA_IRQ_MASK_EN);
-}
-
-static struct irq_chip cplds_irq_chip = {
- .name = "pxa_cplds",
- .irq_ack = cplds_irq_mask,
- .irq_mask = cplds_irq_mask,
- .irq_unmask = cplds_irq_unmask,
- .flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE,
-};
-
-static int cplds_irq_domain_map(struct irq_domain *d, unsigned int irq,
- irq_hw_number_t hwirq)
-{
- struct cplds *fpga = d->host_data;
-
- irq_set_chip_and_handler(irq, &cplds_irq_chip, handle_level_irq);
- irq_set_chip_data(irq, fpga);
-
- return 0;
-}
-
-static const struct irq_domain_ops cplds_irq_domain_ops = {
- .xlate = irq_domain_xlate_twocell,
- .map = cplds_irq_domain_map,
-};
-
-static int cplds_resume(struct platform_device *pdev)
-{
- struct cplds *fpga = platform_get_drvdata(pdev);
-
- writel(fpga->irq_mask, fpga->base + FPGA_IRQ_MASK_EN);
-
- return 0;
-}
-
-static int cplds_probe(struct platform_device *pdev)
-{
- struct resource *res;
- struct cplds *fpga;
- int ret;
- int base_irq;
- unsigned long irqflags = 0;
-
- fpga = devm_kzalloc(&pdev->dev, sizeof(*fpga), GFP_KERNEL);
- if (!fpga)
- return -ENOMEM;
-
- fpga->irq = platform_get_irq(pdev, 0);
- if (fpga->irq <= 0)
- return fpga->irq;
-
- base_irq = platform_get_irq(pdev, 1);
- if (base_irq < 0) {
- base_irq = 0;
- } else {
- ret = devm_irq_alloc_descs(&pdev->dev, base_irq, base_irq, CPLDS_NB_IRQ, 0);
- if (ret < 0)
- return ret;
- }
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- fpga->base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(fpga->base))
- return PTR_ERR(fpga->base);
-
- platform_set_drvdata(pdev, fpga);
-
- writel(fpga->irq_mask, fpga->base + FPGA_IRQ_MASK_EN);
- writel(0, fpga->base + FPGA_IRQ_SET_CLR);
-
- irqflags = irq_get_trigger_type(fpga->irq);
- ret = devm_request_irq(&pdev->dev, fpga->irq, cplds_irq_handler,
- irqflags, dev_name(&pdev->dev), fpga);
- if (ret == -ENOSYS)
- return -EPROBE_DEFER;
-
- if (ret) {
- dev_err(&pdev->dev, "couldn't request main irq%d: %d\n",
- fpga->irq, ret);
- return ret;
- }
-
- irq_set_irq_wake(fpga->irq, 1);
- if (base_irq)
- fpga->irqdomain = irq_domain_add_legacy(pdev->dev.of_node,
- CPLDS_NB_IRQ,
- base_irq, 0,
- &cplds_irq_domain_ops,
- fpga);
- else
- fpga->irqdomain = irq_domain_add_linear(pdev->dev.of_node,
- CPLDS_NB_IRQ,
- &cplds_irq_domain_ops,
- fpga);
- if (!fpga->irqdomain)
- return -ENODEV;
-
- return 0;
-}
-
-static int cplds_remove(struct platform_device *pdev)
-{
- struct cplds *fpga = platform_get_drvdata(pdev);
-
- irq_set_chip_and_handler(fpga->irq, NULL, NULL);
-
- return 0;
-}
-
-static const struct of_device_id cplds_id_table[] = {
- { .compatible = "intel,lubbock-cplds-irqs", },
- { .compatible = "intel,mainstone-cplds-irqs", },
- { }
-};
-MODULE_DEVICE_TABLE(of, cplds_id_table);
-
-static struct platform_driver cplds_driver = {
- .driver = {
- .name = "pxa_cplds_irqs",
- .of_match_table = of_match_ptr(cplds_id_table),
- },
- .probe = cplds_probe,
- .remove = cplds_remove,
- .resume = cplds_resume,
-};
-
-module_platform_driver(cplds_driver);
-
-MODULE_DESCRIPTION("PXA Cplds interrupts driver");
-MODULE_AUTHOR("Robert Jarzmik <robert.jarzmik@free.fr>");
-MODULE_LICENSE("GPL");