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Diffstat (limited to 'arch/powerpc/platforms/52xx/mpc52xx_gpt.c')
-rw-r--r--arch/powerpc/platforms/52xx/mpc52xx_gpt.c133
1 files changed, 67 insertions, 66 deletions
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
index 6f8ebe1085b..692998244d2 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
@@ -62,9 +62,12 @@
#include <linux/of_platform.h>
#include <linux/of_gpio.h>
#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
#include <linux/watchdog.h>
#include <linux/miscdevice.h>
#include <linux/uaccess.h>
+#include <linux/module.h>
#include <asm/div64.h>
#include <asm/mpc52xx.h>
@@ -77,8 +80,8 @@ MODULE_LICENSE("GPL");
* @dev: pointer to device structure
* @regs: virtual address of GPT registers
* @lock: spinlock to coordinate between different functions.
- * @of_gc: of_gpio_chip instance structure; used when GPIO is enabled
- * @irqhost: Pointer to irq_host instance; used when IRQ mode is supported
+ * @gc: gpio_chip instance structure; used when GPIO is enabled
+ * @irqhost: Pointer to irq_domain instance; used when IRQ mode is supported
* @wdt_mode: only relevant for gpt0: bit 0 (MPC52xx_GPT_CAN_WDT) indicates
* if the gpt may be used as wdt, bit 1 (MPC52xx_GPT_IS_WDT) indicates
* if the timer is actively used as wdt which blocks gpt functions
@@ -88,12 +91,12 @@ struct mpc52xx_gpt_priv {
struct device *dev;
struct mpc52xx_gpt __iomem *regs;
spinlock_t lock;
- struct irq_host *irqhost;
+ struct irq_domain *irqhost;
u32 ipb_freq;
u8 wdt_mode;
#if defined(CONFIG_GPIOLIB)
- struct of_gpio_chip of_gc;
+ struct gpio_chip gc;
#endif
};
@@ -133,9 +136,9 @@ DEFINE_MUTEX(mpc52xx_gpt_list_mutex);
* Cascaded interrupt controller hooks
*/
-static void mpc52xx_gpt_irq_unmask(unsigned int virq)
+static void mpc52xx_gpt_irq_unmask(struct irq_data *d)
{
- struct mpc52xx_gpt_priv *gpt = get_irq_chip_data(virq);
+ struct mpc52xx_gpt_priv *gpt = irq_data_get_irq_chip_data(d);
unsigned long flags;
spin_lock_irqsave(&gpt->lock, flags);
@@ -143,9 +146,9 @@ static void mpc52xx_gpt_irq_unmask(unsigned int virq)
spin_unlock_irqrestore(&gpt->lock, flags);
}
-static void mpc52xx_gpt_irq_mask(unsigned int virq)
+static void mpc52xx_gpt_irq_mask(struct irq_data *d)
{
- struct mpc52xx_gpt_priv *gpt = get_irq_chip_data(virq);
+ struct mpc52xx_gpt_priv *gpt = irq_data_get_irq_chip_data(d);
unsigned long flags;
spin_lock_irqsave(&gpt->lock, flags);
@@ -153,20 +156,20 @@ static void mpc52xx_gpt_irq_mask(unsigned int virq)
spin_unlock_irqrestore(&gpt->lock, flags);
}
-static void mpc52xx_gpt_irq_ack(unsigned int virq)
+static void mpc52xx_gpt_irq_ack(struct irq_data *d)
{
- struct mpc52xx_gpt_priv *gpt = get_irq_chip_data(virq);
+ struct mpc52xx_gpt_priv *gpt = irq_data_get_irq_chip_data(d);
out_be32(&gpt->regs->status, MPC52xx_GPT_STATUS_IRQMASK);
}
-static int mpc52xx_gpt_irq_set_type(unsigned int virq, unsigned int flow_type)
+static int mpc52xx_gpt_irq_set_type(struct irq_data *d, unsigned int flow_type)
{
- struct mpc52xx_gpt_priv *gpt = get_irq_chip_data(virq);
+ struct mpc52xx_gpt_priv *gpt = irq_data_get_irq_chip_data(d);
unsigned long flags;
u32 reg;
- dev_dbg(gpt->dev, "%s: virq=%i type=%x\n", __func__, virq, flow_type);
+ dev_dbg(gpt->dev, "%s: virq=%i type=%x\n", __func__, d->irq, flow_type);
spin_lock_irqsave(&gpt->lock, flags);
reg = in_be32(&gpt->regs->mode) & ~MPC52xx_GPT_MODE_ICT_MASK;
@@ -182,15 +185,15 @@ static int mpc52xx_gpt_irq_set_type(unsigned int virq, unsigned int flow_type)
static struct irq_chip mpc52xx_gpt_irq_chip = {
.name = "MPC52xx GPT",
- .unmask = mpc52xx_gpt_irq_unmask,
- .mask = mpc52xx_gpt_irq_mask,
- .ack = mpc52xx_gpt_irq_ack,
- .set_type = mpc52xx_gpt_irq_set_type,
+ .irq_unmask = mpc52xx_gpt_irq_unmask,
+ .irq_mask = mpc52xx_gpt_irq_mask,
+ .irq_ack = mpc52xx_gpt_irq_ack,
+ .irq_set_type = mpc52xx_gpt_irq_set_type,
};
void mpc52xx_gpt_irq_cascade(unsigned int virq, struct irq_desc *desc)
{
- struct mpc52xx_gpt_priv *gpt = get_irq_data(virq);
+ struct mpc52xx_gpt_priv *gpt = irq_get_handler_data(virq);
int sub_virq;
u32 status;
@@ -201,19 +204,19 @@ void mpc52xx_gpt_irq_cascade(unsigned int virq, struct irq_desc *desc)
}
}
-static int mpc52xx_gpt_irq_map(struct irq_host *h, unsigned int virq,
+static int mpc52xx_gpt_irq_map(struct irq_domain *h, unsigned int virq,
irq_hw_number_t hw)
{
struct mpc52xx_gpt_priv *gpt = h->host_data;
dev_dbg(gpt->dev, "%s: h=%p, virq=%i\n", __func__, h, virq);
- set_irq_chip_data(virq, gpt);
- set_irq_chip_and_handler(virq, &mpc52xx_gpt_irq_chip, handle_edge_irq);
+ irq_set_chip_data(virq, gpt);
+ irq_set_chip_and_handler(virq, &mpc52xx_gpt_irq_chip, handle_edge_irq);
return 0;
}
-static int mpc52xx_gpt_irq_xlate(struct irq_host *h, struct device_node *ct,
+static int mpc52xx_gpt_irq_xlate(struct irq_domain *h, struct device_node *ct,
const u32 *intspec, unsigned int intsize,
irq_hw_number_t *out_hwirq,
unsigned int *out_flags)
@@ -233,7 +236,7 @@ static int mpc52xx_gpt_irq_xlate(struct irq_host *h, struct device_node *ct,
return 0;
}
-static struct irq_host_ops mpc52xx_gpt_irq_ops = {
+static const struct irq_domain_ops mpc52xx_gpt_irq_ops = {
.map = mpc52xx_gpt_irq_map,
.xlate = mpc52xx_gpt_irq_xlate,
};
@@ -249,16 +252,14 @@ mpc52xx_gpt_irq_setup(struct mpc52xx_gpt_priv *gpt, struct device_node *node)
if (!cascade_virq)
return;
- gpt->irqhost = irq_alloc_host(node, IRQ_HOST_MAP_LINEAR, 1,
- &mpc52xx_gpt_irq_ops, -1);
+ gpt->irqhost = irq_domain_add_linear(node, 1, &mpc52xx_gpt_irq_ops, gpt);
if (!gpt->irqhost) {
- dev_err(gpt->dev, "irq_alloc_host() failed\n");
+ dev_err(gpt->dev, "irq_domain_add_linear() failed\n");
return;
}
- gpt->irqhost->host_data = gpt;
- set_irq_data(cascade_virq, gpt);
- set_irq_chained_handler(cascade_virq, mpc52xx_gpt_irq_cascade);
+ irq_set_handler_data(cascade_virq, gpt);
+ irq_set_chained_handler(cascade_virq, mpc52xx_gpt_irq_cascade);
/* If the GPT is currently disabled, then change it to be in Input
* Capture mode. If the mode is non-zero, then the pin could be
@@ -279,7 +280,7 @@ mpc52xx_gpt_irq_setup(struct mpc52xx_gpt_priv *gpt, struct device_node *node)
#if defined(CONFIG_GPIOLIB)
static inline struct mpc52xx_gpt_priv *gc_to_mpc52xx_gpt(struct gpio_chip *gc)
{
- return container_of(to_of_gpio_chip(gc), struct mpc52xx_gpt_priv,of_gc);
+ return container_of(gc, struct mpc52xx_gpt_priv, gc);
}
static int mpc52xx_gpt_gpio_get(struct gpio_chip *gc, unsigned int gpio)
@@ -335,28 +336,25 @@ mpc52xx_gpt_gpio_setup(struct mpc52xx_gpt_priv *gpt, struct device_node *node)
if (!of_find_property(node, "gpio-controller", NULL))
return;
- gpt->of_gc.gc.label = kstrdup(node->full_name, GFP_KERNEL);
- if (!gpt->of_gc.gc.label) {
+ gpt->gc.label = kstrdup(node->full_name, GFP_KERNEL);
+ if (!gpt->gc.label) {
dev_err(gpt->dev, "out of memory\n");
return;
}
- gpt->of_gc.gpio_cells = 2;
- gpt->of_gc.gc.ngpio = 1;
- gpt->of_gc.gc.direction_input = mpc52xx_gpt_gpio_dir_in;
- gpt->of_gc.gc.direction_output = mpc52xx_gpt_gpio_dir_out;
- gpt->of_gc.gc.get = mpc52xx_gpt_gpio_get;
- gpt->of_gc.gc.set = mpc52xx_gpt_gpio_set;
- gpt->of_gc.gc.base = -1;
- gpt->of_gc.xlate = of_gpio_simple_xlate;
- node->data = &gpt->of_gc;
- of_node_get(node);
+ gpt->gc.ngpio = 1;
+ gpt->gc.direction_input = mpc52xx_gpt_gpio_dir_in;
+ gpt->gc.direction_output = mpc52xx_gpt_gpio_dir_out;
+ gpt->gc.get = mpc52xx_gpt_gpio_get;
+ gpt->gc.set = mpc52xx_gpt_gpio_set;
+ gpt->gc.base = -1;
+ gpt->gc.of_node = node;
/* Setup external pin in GPIO mode */
clrsetbits_be32(&gpt->regs->mode, MPC52xx_GPT_MODE_MS_MASK,
MPC52xx_GPT_MODE_MS_GPIO);
- rc = gpiochip_add(&gpt->of_gc.gc);
+ rc = gpiochip_add(&gpt->gc);
if (rc)
dev_err(gpt->dev, "gpiochip_add() failed; rc=%i\n", rc);
@@ -528,7 +526,7 @@ EXPORT_SYMBOL(mpc52xx_gpt_timer_period);
#define WDT_IDENTITY "mpc52xx watchdog on GPT0"
-/* wdt_is_active stores wether or not the /dev/watchdog device is opened */
+/* wdt_is_active stores whether or not the /dev/watchdog device is opened */
static unsigned long wdt_is_active;
/* wdt-capable gpt */
@@ -553,7 +551,7 @@ static ssize_t mpc52xx_wdt_write(struct file *file, const char __user *data,
return 0;
}
-static struct watchdog_info mpc5200_wdt_info = {
+static const struct watchdog_info mpc5200_wdt_info = {
.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
.identity = WDT_IDENTITY,
};
@@ -671,7 +669,7 @@ static struct miscdevice mpc52xx_wdt_miscdev = {
.fops = &mpc52xx_wdt_fops,
};
-static int __devinit mpc52xx_gpt_wdt_init(void)
+static int mpc52xx_gpt_wdt_init(void)
{
int err;
@@ -706,20 +704,23 @@ static int mpc52xx_gpt_wdt_setup(struct mpc52xx_gpt_priv *gpt,
#else
-static int __devinit mpc52xx_gpt_wdt_init(void)
+static int mpc52xx_gpt_wdt_init(void)
{
return 0;
}
-#define mpc52xx_gpt_wdt_setup(x, y) (0)
+static inline int mpc52xx_gpt_wdt_setup(struct mpc52xx_gpt_priv *gpt,
+ const u32 *period)
+{
+ return 0;
+}
#endif /* CONFIG_MPC5200_WDT */
/* ---------------------------------------------------------------------
* of_platform bus binding code
*/
-static int __devinit mpc52xx_gpt_probe(struct of_device *ofdev,
- const struct of_device_id *match)
+static int mpc52xx_gpt_probe(struct platform_device *ofdev)
{
struct mpc52xx_gpt_priv *gpt;
@@ -729,8 +730,8 @@ static int __devinit mpc52xx_gpt_probe(struct of_device *ofdev,
spin_lock_init(&gpt->lock);
gpt->dev = &ofdev->dev;
- gpt->ipb_freq = mpc5xxx_get_bus_frequency(ofdev->node);
- gpt->regs = of_iomap(ofdev->node, 0);
+ gpt->ipb_freq = mpc5xxx_get_bus_frequency(ofdev->dev.of_node);
+ gpt->regs = of_iomap(ofdev->dev.of_node, 0);
if (!gpt->regs) {
kfree(gpt);
return -ENOMEM;
@@ -738,21 +739,21 @@ static int __devinit mpc52xx_gpt_probe(struct of_device *ofdev,
dev_set_drvdata(&ofdev->dev, gpt);
- mpc52xx_gpt_gpio_setup(gpt, ofdev->node);
- mpc52xx_gpt_irq_setup(gpt, ofdev->node);
+ mpc52xx_gpt_gpio_setup(gpt, ofdev->dev.of_node);
+ mpc52xx_gpt_irq_setup(gpt, ofdev->dev.of_node);
mutex_lock(&mpc52xx_gpt_list_mutex);
list_add(&gpt->list, &mpc52xx_gpt_list);
mutex_unlock(&mpc52xx_gpt_list_mutex);
/* check if this device could be a watchdog */
- if (of_get_property(ofdev->node, "fsl,has-wdt", NULL) ||
- of_get_property(ofdev->node, "has-wdt", NULL)) {
+ if (of_get_property(ofdev->dev.of_node, "fsl,has-wdt", NULL) ||
+ of_get_property(ofdev->dev.of_node, "has-wdt", NULL)) {
const u32 *on_boot_wdt;
gpt->wdt_mode = MPC52xx_GPT_CAN_WDT;
- on_boot_wdt = of_get_property(ofdev->node, "fsl,wdt-on-boot",
- NULL);
+ on_boot_wdt = of_get_property(ofdev->dev.of_node,
+ "fsl,wdt-on-boot", NULL);
if (on_boot_wdt) {
dev_info(gpt->dev, "used as watchdog\n");
gpt->wdt_mode |= MPC52xx_GPT_IS_WDT;
@@ -764,7 +765,7 @@ static int __devinit mpc52xx_gpt_probe(struct of_device *ofdev,
return 0;
}
-static int mpc52xx_gpt_remove(struct of_device *ofdev)
+static int mpc52xx_gpt_remove(struct platform_device *ofdev)
{
return -EBUSY;
}
@@ -778,19 +779,19 @@ static const struct of_device_id mpc52xx_gpt_match[] = {
{}
};
-static struct of_platform_driver mpc52xx_gpt_driver = {
- .name = "mpc52xx-gpt",
- .match_table = mpc52xx_gpt_match,
+static struct platform_driver mpc52xx_gpt_driver = {
+ .driver = {
+ .name = "mpc52xx-gpt",
+ .owner = THIS_MODULE,
+ .of_match_table = mpc52xx_gpt_match,
+ },
.probe = mpc52xx_gpt_probe,
.remove = mpc52xx_gpt_remove,
};
static int __init mpc52xx_gpt_init(void)
{
- if (of_register_platform_driver(&mpc52xx_gpt_driver))
- pr_err("error registering MPC52xx GPT driver\n");
-
- return 0;
+ return platform_driver_register(&mpc52xx_gpt_driver);
}
/* Make sure GPIOs and IRQs get set up before anyone tries to use them */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-16 02:13:31 +0000