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path: root/drivers/gpio/gpio-mockup.c
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Diffstat (limited to 'drivers/gpio/gpio-mockup.c')
-rw-r--r--drivers/gpio/gpio-mockup.c79
1 files changed, 7 insertions, 72 deletions
diff --git a/drivers/gpio/gpio-mockup.c b/drivers/gpio/gpio-mockup.c
index a6565e128f9e..9532d86a82f7 100644
--- a/drivers/gpio/gpio-mockup.c
+++ b/drivers/gpio/gpio-mockup.c
@@ -20,7 +20,7 @@
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
-#include <linux/irq_work.h>
+#include <linux/irq_sim.h>
#include <linux/debugfs.h>
#include <linux/uaccess.h>
@@ -47,18 +47,12 @@ enum {
struct gpio_mockup_line_status {
int dir;
bool value;
- bool irq_enabled;
-};
-
-struct gpio_mockup_irq_context {
- struct irq_work work;
- int irq;
};
struct gpio_mockup_chip {
struct gpio_chip gc;
struct gpio_mockup_line_status *lines;
- struct gpio_mockup_irq_context irq_ctx;
+ struct irq_sim irqsim;
struct dentry *dbg_dir;
};
@@ -144,65 +138,11 @@ static int gpio_mockup_name_lines(struct device *dev,
return 0;
}
-static int gpio_mockup_to_irq(struct gpio_chip *chip, unsigned int offset)
-{
- return chip->irq_base + offset;
-}
-
-static void gpio_mockup_irqmask(struct irq_data *data)
-{
- struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
- struct gpio_mockup_chip *chip = gpiochip_get_data(gc);
-
- chip->lines[data->irq - gc->irq_base].irq_enabled = false;
-}
-
-static void gpio_mockup_irqunmask(struct irq_data *data)
+static int gpio_mockup_to_irq(struct gpio_chip *gc, unsigned int offset)
{
- struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
struct gpio_mockup_chip *chip = gpiochip_get_data(gc);
- chip->lines[data->irq - gc->irq_base].irq_enabled = true;
-}
-
-static struct irq_chip gpio_mockup_irqchip = {
- .name = GPIO_MOCKUP_NAME,
- .irq_mask = gpio_mockup_irqmask,
- .irq_unmask = gpio_mockup_irqunmask,
-};
-
-static void gpio_mockup_handle_irq(struct irq_work *work)
-{
- struct gpio_mockup_irq_context *irq_ctx;
-
- irq_ctx = container_of(work, struct gpio_mockup_irq_context, work);
- handle_simple_irq(irq_to_desc(irq_ctx->irq));
-}
-
-static int gpio_mockup_irqchip_setup(struct device *dev,
- struct gpio_mockup_chip *chip)
-{
- struct gpio_chip *gc = &chip->gc;
- int irq_base, i;
-
- irq_base = devm_irq_alloc_descs(dev, -1, 0, gc->ngpio, 0);
- if (irq_base < 0)
- return irq_base;
-
- gc->irq_base = irq_base;
- gc->irqchip = &gpio_mockup_irqchip;
-
- for (i = 0; i < gc->ngpio; i++) {
- irq_set_chip(irq_base + i, gc->irqchip);
- irq_set_chip_data(irq_base + i, gc);
- irq_set_handler(irq_base + i, &handle_simple_irq);
- irq_modify_status(irq_base + i,
- IRQ_NOREQUEST | IRQ_NOAUTOEN, IRQ_NOPROBE);
- }
-
- init_irq_work(&chip->irq_ctx.work, gpio_mockup_handle_irq);
-
- return 0;
+ return irq_sim_irqnum(&chip->irqsim, offset);
}
static ssize_t gpio_mockup_event_write(struct file *file,
@@ -213,7 +153,6 @@ static ssize_t gpio_mockup_event_write(struct file *file,
struct gpio_mockup_chip *chip;
struct seq_file *sfile;
struct gpio_desc *desc;
- struct gpio_chip *gc;
int rv, val;
rv = kstrtoint_from_user(usr_buf, size, 0, &val);
@@ -226,13 +165,9 @@ static ssize_t gpio_mockup_event_write(struct file *file,
priv = sfile->private;
desc = priv->desc;
chip = priv->chip;
- gc = &chip->gc;
- if (chip->lines[priv->offset].irq_enabled) {
- gpiod_set_value_cansleep(desc, val);
- priv->chip->irq_ctx.irq = gc->irq_base + priv->offset;
- irq_work_queue(&priv->chip->irq_ctx.work);
- }
+ gpiod_set_value_cansleep(desc, val);
+ irq_sim_fire(&chip->irqsim, priv->offset);
return size;
}
@@ -319,7 +254,7 @@ static int gpio_mockup_add(struct device *dev,
return ret;
}
- ret = gpio_mockup_irqchip_setup(dev, chip);
+ ret = devm_irq_sim_init(dev, &chip->irqsim, gc->ngpio);
if (ret)
return ret;