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Message-Id: <1495701227-28809-5-git-send-email-brgl@bgdev.pl>
Date: Thu, 25 May 2017 10:33:41 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Linus Walleij <linus.walleij@...aro.org>,
Alexandre Courbot <gnurou@...il.com>,
Bamvor Jian Zhang <bamvor.zhangjian@...aro.org>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
Bartosz Golaszewski <brgl@...ev.pl>
Subject: [PATCH 04/10] gpio: mockup: support irqmask and irqunmask
Even though this is a testing module, be nice and actually implement
these functions.
Signed-off-by: Bartosz Golaszewski <brgl@...ev.pl>
---
drivers/gpio/gpio-mockup.c | 26 ++++++++++++++++++++------
1 file changed, 20 insertions(+), 6 deletions(-)
diff --git a/drivers/gpio/gpio-mockup.c b/drivers/gpio/gpio-mockup.c
index c17578e..ba8d62a 100644
--- a/drivers/gpio/gpio-mockup.c
+++ b/drivers/gpio/gpio-mockup.c
@@ -41,6 +41,7 @@ enum {
struct gpio_mockup_line_status {
int dir;
bool value;
+ bool irq_enabled;
};
struct gpio_mockup_irq_context {
@@ -142,12 +143,21 @@ static int gpio_mockup_to_irq(struct gpio_chip *chip, unsigned int offset)
return chip->irq_base + offset;
}
-/*
- * While we should generally support irqmask and irqunmask, this driver is
- * for testing purposes only so we don't care.
- */
-static void gpio_mockup_irqmask(struct irq_data *d) { }
-static void gpio_mockup_irqunmask(struct irq_data *d) { }
+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)
+{
+ 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,
@@ -178,6 +188,7 @@ static int gpio_mockup_irqchip_setup(struct device *dev,
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);
@@ -206,6 +217,9 @@ static ssize_t gpio_mockup_event_write(struct file *file,
chip = priv->chip;
gc = &chip->gc;
+ if (!chip->lines[priv->offset].irq_enabled)
+ return size;
+
if (copy_from_user(&buf, usr_buf, 1))
return -EFAULT;
--
2.9.3
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