/* Supports:
* Moorestown platform Langwell chip.
* Medfield platform Penwell chip.
+ * Clovertrail platform Cloverview chip.
+ * Merrifield platform Tangier chip.
*/
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/irqdomain.h>
-#define LNW_IRQ_TYPE_EDGE (1 << 0)
-#define LNW_IRQ_TYPE_LEVEL (1 << 1)
+#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
GAFR, /* alt function */
};
-/* langwell gpio driver data */
-struct lnw_gpio_ddata {
+/* intel_mid gpio driver data */
+struct intel_mid_gpio_ddata {
u16 ngpio; /* number of gpio pins */
u32 gplr_offset; /* offset of first GPLR register from base */
u32 flis_base; /* base address of FLIS registers */
u32 chip_irq_type; /* chip interrupt type */
};
-struct lnw_gpio {
+struct intel_mid_gpio {
struct gpio_chip chip;
void __iomem *reg_base;
spinlock_t lock;
struct irq_domain *domain;
};
-#define to_lnw_priv(chip) container_of(chip, struct lnw_gpio, chip)
+#define to_intel_gpio_priv(chip) container_of(chip, struct intel_mid_gpio, chip)
static void __iomem *gpio_reg(struct gpio_chip *chip, unsigned offset,
enum GPIO_REG reg_type)
{
- struct lnw_gpio *lnw = to_lnw_priv(chip);
+ struct intel_mid_gpio *priv = to_intel_gpio_priv(chip);
unsigned nreg = chip->ngpio / 32;
u8 reg = offset / 32;
- return lnw->reg_base + reg_type * nreg * 4 + reg * 4;
+ 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 lnw_gpio *lnw = to_lnw_priv(chip);
+ struct intel_mid_gpio *priv = to_intel_gpio_priv(chip);
unsigned nreg = chip->ngpio / 32;
u8 reg = offset / 16;
- return lnw->reg_base + reg_type * nreg * 4 + reg * 4;
+ return priv->reg_base + reg_type * nreg * 4 + reg * 4;
}
-static int lnw_gpio_request(struct gpio_chip *chip, unsigned offset)
+static int intel_gpio_request(struct gpio_chip *chip, unsigned offset)
{
void __iomem *gafr = gpio_reg_2bit(chip, offset, GAFR);
u32 value = readl(gafr);
return 0;
}
-static int lnw_gpio_get(struct gpio_chip *chip, unsigned offset)
+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 lnw_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+static void intel_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
{
void __iomem *gpsr, *gpcr;
}
}
-static int lnw_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
+static int intel_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
{
- struct lnw_gpio *lnw = to_lnw_priv(chip);
+ struct intel_mid_gpio *priv = to_intel_gpio_priv(chip);
void __iomem *gpdr = gpio_reg(chip, offset, GPDR);
u32 value;
unsigned long flags;
- if (lnw->pdev)
- pm_runtime_get(&lnw->pdev->dev);
+ if (priv->pdev)
+ pm_runtime_get(&priv->pdev->dev);
- spin_lock_irqsave(&lnw->lock, flags);
+ spin_lock_irqsave(&priv->lock, flags);
value = readl(gpdr);
value &= ~BIT(offset % 32);
writel(value, gpdr);
- spin_unlock_irqrestore(&lnw->lock, flags);
+ spin_unlock_irqrestore(&priv->lock, flags);
- if (lnw->pdev)
- pm_runtime_put(&lnw->pdev->dev);
+ if (priv->pdev)
+ pm_runtime_put(&priv->pdev->dev);
return 0;
}
-static int lnw_gpio_direction_output(struct gpio_chip *chip,
+static int intel_gpio_direction_output(struct gpio_chip *chip,
unsigned offset, int value)
{
- struct lnw_gpio *lnw = to_lnw_priv(chip);
+ struct intel_mid_gpio *priv = to_intel_gpio_priv(chip);
void __iomem *gpdr = gpio_reg(chip, offset, GPDR);
unsigned long flags;
- lnw_gpio_set(chip, offset, value);
+ intel_gpio_set(chip, offset, value);
- if (lnw->pdev)
- pm_runtime_get(&lnw->pdev->dev);
+ if (priv->pdev)
+ pm_runtime_get(&priv->pdev->dev);
- spin_lock_irqsave(&lnw->lock, flags);
+ spin_lock_irqsave(&priv->lock, flags);
value = readl(gpdr);
value |= BIT(offset % 32);
writel(value, gpdr);
- spin_unlock_irqrestore(&lnw->lock, flags);
+ spin_unlock_irqrestore(&priv->lock, flags);
- if (lnw->pdev)
- pm_runtime_put(&lnw->pdev->dev);
+ if (priv->pdev)
+ pm_runtime_put(&priv->pdev->dev);
return 0;
}
-static int lnw_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
+static int intel_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
{
- struct lnw_gpio *lnw = to_lnw_priv(chip);
- return irq_create_mapping(lnw->domain, offset);
+ struct intel_mid_gpio *priv = to_intel_gpio_priv(chip);
+ return irq_create_mapping(priv->domain, offset);
}
-static int lnw_irq_type(struct irq_data *d, unsigned type)
+static int intel_mid_irq_type(struct irq_data *d, unsigned type)
{
- struct lnw_gpio *lnw = irq_data_get_irq_chip_data(d);
+ struct intel_mid_gpio *priv = irq_data_get_irq_chip_data(d);
u32 gpio = irqd_to_hwirq(d);
unsigned long flags;
u32 value;
- void __iomem *grer = gpio_reg(&lnw->chip, gpio, GRER);
- void __iomem *gfer = gpio_reg(&lnw->chip, gpio, GFER);
+ void __iomem *grer = gpio_reg(&priv->chip, gpio, GRER);
+ void __iomem *gfer = gpio_reg(&priv->chip, gpio, GFER);
- if (gpio >= lnw->chip.ngpio)
+ if (gpio >= priv->chip.ngpio)
return -EINVAL;
- if (lnw->pdev)
- pm_runtime_get(&lnw->pdev->dev);
+ if (priv->pdev)
+ pm_runtime_get(&priv->pdev->dev);
- spin_lock_irqsave(&lnw->lock, flags);
+ spin_lock_irqsave(&priv->lock, flags);
if (type & IRQ_TYPE_EDGE_RISING)
value = readl(grer) | BIT(gpio % 32);
else
else
value = readl(gfer) & (~BIT(gpio % 32));
writel(value, gfer);
- spin_unlock_irqrestore(&lnw->lock, flags);
+ spin_unlock_irqrestore(&priv->lock, flags);
- if (lnw->pdev)
- pm_runtime_put(&lnw->pdev->dev);
+ if (priv->pdev)
+ pm_runtime_put(&priv->pdev->dev);
return 0;
}
-static void lnw_irq_unmask(struct irq_data *d)
+static void intel_mid_irq_unmask(struct irq_data *d)
{
}
-static void lnw_irq_mask(struct irq_data *d)
+static void intel_mid_irq_mask(struct irq_data *d)
{
}
-static struct irq_chip lnw_irqchip = {
- .name = "LNW-GPIO",
- .irq_mask = lnw_irq_mask,
- .irq_unmask = lnw_irq_unmask,
- .irq_set_type = lnw_irq_type,
+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 lnw_gpio_ddata gpio_lincroft = {
+static const struct intel_mid_gpio_ddata gpio_lincroft = {
.ngpio = 64,
};
-static const struct lnw_gpio_ddata gpio_penwell_aon = {
+static const struct intel_mid_gpio_ddata gpio_penwell_aon = {
.ngpio = 96,
- .chip_irq_type = LNW_IRQ_TYPE_EDGE,
+ .chip_irq_type = INTEL_MID_IRQ_TYPE_EDGE,
};
-static const struct lnw_gpio_ddata gpio_penwell_core = {
+static const struct intel_mid_gpio_ddata gpio_penwell_core = {
.ngpio = 96,
- .chip_irq_type = LNW_IRQ_TYPE_EDGE,
+ .chip_irq_type = INTEL_MID_IRQ_TYPE_EDGE,
};
-static const struct lnw_gpio_ddata gpio_cloverview_aon = {
+static const struct intel_mid_gpio_ddata gpio_cloverview_aon = {
.ngpio = 96,
- .chip_irq_type = LNW_IRQ_TYPE_EDGE | LNW_IRQ_TYPE_LEVEL,
+ .chip_irq_type = INTEL_MID_IRQ_TYPE_EDGE | INTEL_MID_IRQ_TYPE_LEVEL,
};
-static const struct lnw_gpio_ddata gpio_cloverview_core = {
+static const struct intel_mid_gpio_ddata gpio_cloverview_core = {
.ngpio = 96,
- .chip_irq_type = LNW_IRQ_TYPE_EDGE,
+ .chip_irq_type = INTEL_MID_IRQ_TYPE_EDGE,
};
-static const struct lnw_gpio_ddata gpio_tangier = {
+static const struct intel_mid_gpio_ddata gpio_tangier = {
.ngpio = 192,
.gplr_offset = 4,
.flis_base = 0xff0c0000,
.flis_len = 0x8000,
.get_flis_offset = NULL,
- .chip_irq_type = LNW_IRQ_TYPE_EDGE,
+ .chip_irq_type = INTEL_MID_IRQ_TYPE_EDGE,
};
-static DEFINE_PCI_DEVICE_TABLE(lnw_gpio_ids) = {
+static DEFINE_PCI_DEVICE_TABLE(intel_gpio_ids) = {
{
/* Lincroft */
PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x080f),
},
{ 0 }
};
-MODULE_DEVICE_TABLE(pci, lnw_gpio_ids);
+MODULE_DEVICE_TABLE(pci, intel_gpio_ids);
-static void lnw_irq_handler(unsigned irq, struct irq_desc *desc)
+static void intel_mid_irq_handler(unsigned irq, struct irq_desc *desc)
{
struct irq_data *data = irq_desc_get_irq_data(desc);
- struct lnw_gpio *lnw = irq_data_get_irq_handler_data(data);
+ struct intel_mid_gpio *priv = irq_data_get_irq_handler_data(data);
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 < lnw->chip.ngpio; base += 32) {
- gedr = gpio_reg(&lnw->chip, base, GEDR);
+ 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(lnw->domain,
+ generic_handle_irq(irq_find_mapping(priv->domain,
base + gpio));
}
}
chip->irq_eoi(data);
}
-static void lnw_irq_init_hw(struct lnw_gpio *lnw)
+static void intel_mid_irq_init_hw(struct intel_mid_gpio *priv)
{
void __iomem *reg;
unsigned base;
- for (base = 0; base < lnw->chip.ngpio; base += 32) {
+ for (base = 0; base < priv->chip.ngpio; base += 32) {
/* Clear the rising-edge detect register */
- reg = gpio_reg(&lnw->chip, base, GRER);
+ reg = gpio_reg(&priv->chip, base, GRER);
writel(0, reg);
/* Clear the falling-edge detect register */
- reg = gpio_reg(&lnw->chip, base, GFER);
+ reg = gpio_reg(&priv->chip, base, GFER);
writel(0, reg);
/* Clear the edge detect status register */
- reg = gpio_reg(&lnw->chip, base, GEDR);
+ reg = gpio_reg(&priv->chip, base, GEDR);
writel(~0, reg);
}
}
-static int lnw_gpio_irq_map(struct irq_domain *d, unsigned int virq,
+static int intel_gpio_irq_map(struct irq_domain *d, unsigned int virq,
irq_hw_number_t hw)
{
- struct lnw_gpio *lnw = d->host_data;
+ struct intel_mid_gpio *priv = d->host_data;
- irq_set_chip_and_handler_name(virq, &lnw_irqchip, handle_simple_irq,
- "demux");
- irq_set_chip_data(virq, lnw);
+ irq_set_chip_and_handler_name(virq, &intel_mid_irqchip,
+ handle_simple_irq, "demux");
+ irq_set_chip_data(virq, priv);
irq_set_irq_type(virq, IRQ_TYPE_NONE);
return 0;
}
-static const struct irq_domain_ops lnw_gpio_irq_ops = {
- .map = lnw_gpio_irq_map,
+static const struct irq_domain_ops intel_gpio_irq_ops = {
+ .map = intel_gpio_irq_map,
.xlate = irq_domain_xlate_twocell,
};
-static int lnw_gpio_runtime_idle(struct device *dev)
+static int intel_gpio_runtime_idle(struct device *dev)
{
pm_schedule_suspend(dev, 500);
return -EBUSY;
}
-static const struct dev_pm_ops lnw_gpio_pm_ops = {
- SET_RUNTIME_PM_OPS(NULL, NULL, lnw_gpio_runtime_idle)
+static const struct dev_pm_ops intel_gpio_pm_ops = {
+ SET_RUNTIME_PM_OPS(NULL, NULL, intel_gpio_runtime_idle)
};
-static int lnw_gpio_probe(struct pci_dev *pdev,
+static int intel_gpio_probe(struct pci_dev *pdev,
const struct pci_device_id *id)
{
void __iomem *base;
- struct lnw_gpio *lnw;
+ struct intel_mid_gpio *priv;
u32 gpio_base;
u32 irq_base;
int retval;
- struct lnw_gpio_ddata *ddata = (struct lnw_gpio_ddata *)id->driver_data;
+ struct intel_mid_gpio_ddata *ddata =
+ (struct intel_mid_gpio_ddata *)id->driver_data;
retval = pcim_enable_device(pdev);
if (retval)
/* release the IO mapping, since we already get the info from bar1 */
pcim_iounmap_regions(pdev, 1 << 1);
- lnw = devm_kzalloc(&pdev->dev, sizeof(*lnw), GFP_KERNEL);
- if (!lnw) {
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv) {
dev_err(&pdev->dev, "can't allocate chip data\n");
return -ENOMEM;
}
- lnw->reg_base = pcim_iomap_table(pdev)[0];
- lnw->chip.label = dev_name(&pdev->dev);
- lnw->chip.request = lnw_gpio_request;
- lnw->chip.direction_input = lnw_gpio_direction_input;
- lnw->chip.direction_output = lnw_gpio_direction_output;
- lnw->chip.get = lnw_gpio_get;
- lnw->chip.set = lnw_gpio_set;
- lnw->chip.to_irq = lnw_gpio_to_irq;
- lnw->chip.base = gpio_base;
- lnw->chip.ngpio = ddata->ngpio;
- lnw->chip.can_sleep = 0;
- lnw->pdev = pdev;
-
- spin_lock_init(&lnw->lock);
-
- lnw->domain = irq_domain_add_simple(pdev->dev.of_node, ddata->ngpio,
- irq_base, &lnw_gpio_irq_ops, lnw);
- if (!lnw->domain)
+ priv->reg_base = pcim_iomap_table(pdev)[0];
+ priv->chip.label = dev_name(&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.to_irq = intel_gpio_to_irq;
+ priv->chip.base = gpio_base;
+ priv->chip.ngpio = ddata->ngpio;
+ priv->chip.can_sleep = 0;
+ priv->pdev = pdev;
+
+ spin_lock_init(&priv->lock);
+
+ priv->domain = irq_domain_add_simple(pdev->dev.of_node, ddata->ngpio,
+ irq_base, &intel_gpio_irq_ops, priv);
+ if (!priv->domain)
return -ENOMEM;
- pci_set_drvdata(pdev, lnw);
- retval = gpiochip_add(&lnw->chip);
+ pci_set_drvdata(pdev, priv);
+ retval = gpiochip_add(&priv->chip);
if (retval) {
dev_err(&pdev->dev, "gpiochip_add error %d\n", retval);
return retval;
}
- lnw_irq_init_hw(lnw);
+ intel_mid_irq_init_hw(priv);
- irq_set_handler_data(pdev->irq, lnw);
- irq_set_chained_handler(pdev->irq, lnw_irq_handler);
+ irq_set_handler_data(pdev->irq, priv);
+ irq_set_chained_handler(pdev->irq, intel_mid_irq_handler);
pm_runtime_put_noidle(&pdev->dev);
pm_runtime_allow(&pdev->dev);
return 0;
}
-static struct pci_driver lnw_gpio_driver = {
- .name = "langwell_gpio",
- .id_table = lnw_gpio_ids,
- .probe = lnw_gpio_probe,
+static struct pci_driver intel_gpio_driver = {
+ .name = "intel_mid_gpio",
+ .id_table = intel_gpio_ids,
+ .probe = intel_gpio_probe,
.driver = {
- .pm = &lnw_gpio_pm_ops,
+ .pm = &intel_gpio_pm_ops,
},
};
-static int __init lnw_gpio_init(void)
+static int __init intel_gpio_init(void)
{
- return pci_register_driver(&lnw_gpio_driver);
+ return pci_register_driver(&intel_gpio_driver);
}
-device_initcall(lnw_gpio_init);
+device_initcall(intel_gpio_init);
projects / karo-tx-linux.git / commitdiff