1 files changed, 0 insertions, 414 deletions
diff --git a/drivers/gpio/gpio-intel-mid.c b/drivers/gpio/gpio-intel-mid.c
deleted file mode 100644
index 86a10c808ef6..000000000000
--- a/drivers/gpio/gpio-intel-mid.c
+++ /dev/null
@@ -1,414 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Intel MID GPIO driver
- *
- * Copyright (c) 2008-2014,2016 Intel Corporation.
- */
-
-/* Supports:
- * Moorestown platform Langwell chip.
- * Medfield platform Penwell chip.
- * Clovertrail platform Cloverview chip.
- */
-
-#include <linux/delay.h>
-#include <linux/gpio/driver.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
-#include <linux/slab.h>
-#include <linux/stddef.h>
-
-#define INTEL_MID_IRQ_TYPE_EDGE		(1 << 0)
-#define INTEL_MID_IRQ_TYPE_LEVEL	(1 << 1)
-
-/*
- * Langwell chip has 64 pins and thus there are 2 32bit registers to control
- * each feature, while Penwell chip has 96 pins for each block, and need 3 32bit
- * registers to control them, so we only define the order here instead of a
- * structure, to get a bit offset for a pin (use GPDR as an example):
- *
- * nreg = ngpio / 32;
- * reg = offset / 32;
- * bit = offset % 32;
- * reg_addr = reg_base + GPDR * nreg * 4 + reg * 4;
- *
- * so the bit of reg_addr is to control pin offset's GPDR feature
-*/
-
-enum GPIO_REG {
-	GPLR = 0,	/* pin level read-only */
-	GPDR,		/* pin direction */
-	GPSR,		/* pin set */
-	GPCR,		/* pin clear */
-	GRER,		/* rising edge detect */
-	GFER,		/* falling edge detect */
-	GEDR,		/* edge detect result */
-	GAFR,		/* alt function */
-};
-
-/* intel_mid gpio driver data */
-struct intel_mid_gpio_ddata {
-	u16 ngpio;		/* number of gpio pins */
-	u32 chip_irq_type;	/* chip interrupt type */
-};
-
-struct intel_mid_gpio {
-	struct gpio_chip		chip;
-	void __iomem			*reg_base;
-	spinlock_t			lock;
-	struct pci_dev			*pdev;
-};
-
-static void __iomem *gpio_reg(struct gpio_chip *chip, unsigned offset,
-			      enum GPIO_REG reg_type)
-{
-	struct intel_mid_gpio *priv = gpiochip_get_data(chip);
-	unsigned nreg = chip->ngpio / 32;
-	u8 reg = offset / 32;
-
-	return priv->reg_base + reg_type * nreg * 4 + reg * 4;
-}
-
-static void __iomem *gpio_reg_2bit(struct gpio_chip *chip, unsigned offset,
-				   enum GPIO_REG reg_type)
-{
-	struct intel_mid_gpio *priv = gpiochip_get_data(chip);
-	unsigned nreg = chip->ngpio / 32;
-	u8 reg = offset / 16;
-
-	return priv->reg_base + reg_type * nreg * 4 + reg * 4;
-}
-
-static int intel_gpio_request(struct gpio_chip *chip, unsigned offset)
-{
-	void __iomem *gafr = gpio_reg_2bit(chip, offset, GAFR);
-	u32 value = readl(gafr);
-	int shift = (offset % 16) << 1, af = (value >> shift) & 3;
-
-	if (af) {
-		value &= ~(3 << shift);
-		writel(value, gafr);
-	}
-	return 0;
-}
-
-static int intel_gpio_get(struct gpio_chip *chip, unsigned offset)
-{
-	void __iomem *gplr = gpio_reg(chip, offset, GPLR);
-
-	return !!(readl(gplr) & BIT(offset % 32));
-}
-
-static void intel_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
-{
-	void __iomem *gpsr, *gpcr;
-
-	if (value) {
-		gpsr = gpio_reg(chip, offset, GPSR);
-		writel(BIT(offset % 32), gpsr);
-	} else {
-		gpcr = gpio_reg(chip, offset, GPCR);
-		writel(BIT(offset % 32), gpcr);
-	}
-}
-
-static int intel_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
-{
-	struct intel_mid_gpio *priv = gpiochip_get_data(chip);
-	void __iomem *gpdr = gpio_reg(chip, offset, GPDR);
-	u32 value;
-	unsigned long flags;
-
-	if (priv->pdev)
-		pm_runtime_get(&priv->pdev->dev);
-
-	spin_lock_irqsave(&priv->lock, flags);
-	value = readl(gpdr);
-	value &= ~BIT(offset % 32);
-	writel(value, gpdr);
-	spin_unlock_irqrestore(&priv->lock, flags);
-
-	if (priv->pdev)
-		pm_runtime_put(&priv->pdev->dev);
-
-	return 0;
-}
-
-static int intel_gpio_direction_output(struct gpio_chip *chip,
-			unsigned offset, int value)
-{
-	struct intel_mid_gpio *priv = gpiochip_get_data(chip);
-	void __iomem *gpdr = gpio_reg(chip, offset, GPDR);
-	unsigned long flags;
-
-	intel_gpio_set(chip, offset, value);
-
-	if (priv->pdev)
-		pm_runtime_get(&priv->pdev->dev);
-
-	spin_lock_irqsave(&priv->lock, flags);
-	value = readl(gpdr);
-	value |= BIT(offset % 32);
-	writel(value, gpdr);
-	spin_unlock_irqrestore(&priv->lock, flags);
-
-	if (priv->pdev)
-		pm_runtime_put(&priv->pdev->dev);
-
-	return 0;
-}
-
-static int intel_mid_irq_type(struct irq_data *d, unsigned type)
-{
-	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
-	struct intel_mid_gpio *priv = gpiochip_get_data(gc);
-	u32 gpio = irqd_to_hwirq(d);
-	unsigned long flags;
-	u32 value;
-	void __iomem *grer = gpio_reg(&priv->chip, gpio, GRER);
-	void __iomem *gfer = gpio_reg(&priv->chip, gpio, GFER);
-
-	if (gpio >= priv->chip.ngpio)
-		return -EINVAL;
-
-	if (priv->pdev)
-		pm_runtime_get(&priv->pdev->dev);
-
-	spin_lock_irqsave(&priv->lock, flags);
-	if (type & IRQ_TYPE_EDGE_RISING)
-		value = readl(grer) | BIT(gpio % 32);
-	else
-		value = readl(grer) & (~BIT(gpio % 32));
-	writel(value, grer);
-
-	if (type & IRQ_TYPE_EDGE_FALLING)
-		value = readl(gfer) | BIT(gpio % 32);
-	else
-		value = readl(gfer) & (~BIT(gpio % 32));
-	writel(value, gfer);
-	spin_unlock_irqrestore(&priv->lock, flags);
-
-	if (priv->pdev)
-		pm_runtime_put(&priv->pdev->dev);
-
-	return 0;
-}
-
-static void intel_mid_irq_unmask(struct irq_data *d)
-{
-}
-
-static void intel_mid_irq_mask(struct irq_data *d)
-{
-}
-
-static struct irq_chip intel_mid_irqchip = {
-	.name		= "INTEL_MID-GPIO",
-	.irq_mask	= intel_mid_irq_mask,
-	.irq_unmask	= intel_mid_irq_unmask,
-	.irq_set_type	= intel_mid_irq_type,
-};
-
-static const struct intel_mid_gpio_ddata gpio_lincroft = {
-	.ngpio = 64,
-};
-
-static const struct intel_mid_gpio_ddata gpio_penwell_aon = {
-	.ngpio = 96,
-	.chip_irq_type = INTEL_MID_IRQ_TYPE_EDGE,
-};
-
-static const struct intel_mid_gpio_ddata gpio_penwell_core = {
-	.ngpio = 96,
-	.chip_irq_type = INTEL_MID_IRQ_TYPE_EDGE,
-};
-
-static const struct intel_mid_gpio_ddata gpio_cloverview_aon = {
-	.ngpio = 96,
-	.chip_irq_type = INTEL_MID_IRQ_TYPE_EDGE | INTEL_MID_IRQ_TYPE_LEVEL,
-};
-
-static const struct intel_mid_gpio_ddata gpio_cloverview_core = {
-	.ngpio = 96,
-	.chip_irq_type = INTEL_MID_IRQ_TYPE_EDGE,
-};
-
-static const struct pci_device_id intel_gpio_ids[] = {
-	{
-		/* Lincroft */
-		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x080f),
-		.driver_data = (kernel_ulong_t)&gpio_lincroft,
-	},
-	{
-		/* Penwell AON */
-		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x081f),
-		.driver_data = (kernel_ulong_t)&gpio_penwell_aon,
-	},
-	{
-		/* Penwell Core */
-		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x081a),
-		.driver_data = (kernel_ulong_t)&gpio_penwell_core,
-	},
-	{
-		/* Cloverview Aon */
-		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x08eb),
-		.driver_data = (kernel_ulong_t)&gpio_cloverview_aon,
-	},
-	{
-		/* Cloverview Core */
-		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x08f7),
-		.driver_data = (kernel_ulong_t)&gpio_cloverview_core,
-	},
-	{ }
-};
-
-static void intel_mid_irq_handler(struct irq_desc *desc)
-{
-	struct gpio_chip *gc = irq_desc_get_handler_data(desc);
-	struct intel_mid_gpio *priv = gpiochip_get_data(gc);
-	struct irq_data *data = irq_desc_get_irq_data(desc);
-	struct irq_chip *chip = irq_data_get_irq_chip(data);
-	u32 base, gpio, mask;
-	unsigned long pending;
-	void __iomem *gedr;
-
-	/* check GPIO controller to check which pin triggered the interrupt */
-	for (base = 0; base < priv->chip.ngpio; base += 32) {
-		gedr = gpio_reg(&priv->chip, base, GEDR);
-		while ((pending = readl(gedr))) {
-			gpio = __ffs(pending);
-			mask = BIT(gpio);
-			/* Clear before handling so we can't lose an edge */
-			writel(mask, gedr);
-			generic_handle_irq(irq_find_mapping(gc->irq.domain,
-							    base + gpio));
-		}
-	}
-
-	chip->irq_eoi(data);
-}
-
-static int intel_mid_irq_init_hw(struct gpio_chip *chip)
-{
-	struct intel_mid_gpio *priv = gpiochip_get_data(chip);
-	void __iomem *reg;
-	unsigned base;
-
-	for (base = 0; base < priv->chip.ngpio; base += 32) {
-		/* Clear the rising-edge detect register */
-		reg = gpio_reg(&priv->chip, base, GRER);
-		writel(0, reg);
-		/* Clear the falling-edge detect register */
-		reg = gpio_reg(&priv->chip, base, GFER);
-		writel(0, reg);
-		/* Clear the edge detect status register */
-		reg = gpio_reg(&priv->chip, base, GEDR);
-		writel(~0, reg);
-	}
-
-	return 0;
-}
-
-static int __maybe_unused intel_gpio_runtime_idle(struct device *dev)
-{
-	int err = pm_schedule_suspend(dev, 500);
-	return err ?: -EBUSY;
-}
-
-static const struct dev_pm_ops intel_gpio_pm_ops = {
-	SET_RUNTIME_PM_OPS(NULL, NULL, intel_gpio_runtime_idle)
-};
-
-static int intel_gpio_probe(struct pci_dev *pdev,
-			  const struct pci_device_id *id)
-{
-	void __iomem *base;
-	struct intel_mid_gpio *priv;
-	u32 gpio_base;
-	u32 irq_base;
-	int retval;
-	struct gpio_irq_chip *girq;
-	struct intel_mid_gpio_ddata *ddata =
-				(struct intel_mid_gpio_ddata *)id->driver_data;
-
-	retval = pcim_enable_device(pdev);
-	if (retval)
-		return retval;
-
-	retval = pcim_iomap_regions(pdev, 1 << 0 | 1 << 1, pci_name(pdev));
-	if (retval) {
-		dev_err(&pdev->dev, "I/O memory mapping error\n");
-		return retval;
-	}
-
-	base = pcim_iomap_table(pdev)[1];
-
-	irq_base = readl(base);
-	gpio_base = readl(sizeof(u32) + base);
-
-	/* release the IO mapping, since we already get the info from bar1 */
-	pcim_iounmap_regions(pdev, 1 << 1);
-
-	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
-	if (!priv)
-		return -ENOMEM;
-
-	priv->reg_base = pcim_iomap_table(pdev)[0];
-	priv->chip.label = dev_name(&pdev->dev);
-	priv->chip.parent = &pdev->dev;
-	priv->chip.request = intel_gpio_request;
-	priv->chip.direction_input = intel_gpio_direction_input;
-	priv->chip.direction_output = intel_gpio_direction_output;
-	priv->chip.get = intel_gpio_get;
-	priv->chip.set = intel_gpio_set;
-	priv->chip.base = gpio_base;
-	priv->chip.ngpio = ddata->ngpio;
-	priv->chip.can_sleep = false;
-	priv->pdev = pdev;
-
-	spin_lock_init(&priv->lock);
-
-	girq = &priv->chip.irq;
-	girq->chip = &intel_mid_irqchip;
-	girq->init_hw = intel_mid_irq_init_hw;
-	girq->parent_handler = intel_mid_irq_handler;
-	girq->num_parents = 1;
-	girq->parents = devm_kcalloc(&pdev->dev, girq->num_parents,
-				     sizeof(*girq->parents),
-				     GFP_KERNEL);
-	if (!girq->parents)
-		return -ENOMEM;
-	girq->parents[0] = pdev->irq;
-	girq->first = irq_base;
-	girq->default_type = IRQ_TYPE_NONE;
-	girq->handler = handle_simple_irq;
-
-	pci_set_drvdata(pdev, priv);
-
-	retval = devm_gpiochip_add_data(&pdev->dev, &priv->chip, priv);
-	if (retval) {
-		dev_err(&pdev->dev, "gpiochip_add error %d\n", retval);
-		return retval;
-	}
-
-	pm_runtime_put_noidle(&pdev->dev);
-	pm_runtime_allow(&pdev->dev);
-
-	return 0;
-}
-
-static struct pci_driver intel_gpio_driver = {
-	.name		= "intel_mid_gpio",
-	.id_table	= intel_gpio_ids,
-	.probe		= intel_gpio_probe,
-	.driver		= {
-		.pm	= &intel_gpio_pm_ops,
-	},
-};
-
-builtin_pci_driver(intel_gpio_driver);