From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Linus Walleij <linus.walleij@linaro.org>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
linux-gpio@vger.kernel.org, Serge Semin <fancer.lancer@gmail.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH v1 02/13] gpio: dwapb: Refactor IRQ handler
Date: Thu, 9 Apr 2020 17:12:17 +0300 [thread overview]
Message-ID: <20200409141228.49561-3-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20200409141228.49561-1-andriy.shevchenko@linux.intel.com>
Refactor IRQ handler in order to:
- enter and exit chained IRQ
- use for_each_set_bit() helper
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/gpio/gpio-dwapb.c | 20 +++++++++-----------
1 file changed, 9 insertions(+), 11 deletions(-)
diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index c1b6d4f7307e..f61139f787d9 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -193,22 +193,21 @@ static void dwapb_toggle_trigger(struct dwapb_gpio *gpio, unsigned int offs)
static u32 dwapb_do_irq(struct dwapb_gpio *gpio)
{
- u32 irq_status = dwapb_read(gpio, GPIO_INTSTATUS);
- u32 ret = irq_status;
+ unsigned long irq_status;
+ int hwirq;
- while (irq_status) {
- int hwirq = fls(irq_status) - 1;
+ irq_status = dwapb_read(gpio, GPIO_INTSTATUS);
+ for_each_set_bit(hwirq, &irq_status, 32) {
int gpio_irq = irq_find_mapping(gpio->domain, hwirq);
+ u32 irq_type = irq_get_trigger_type(gpio_irq);
generic_handle_irq(gpio_irq);
- irq_status &= ~BIT(hwirq);
- if ((irq_get_trigger_type(gpio_irq) & IRQ_TYPE_SENSE_MASK)
- == IRQ_TYPE_EDGE_BOTH)
+ if ((irq_type & IRQ_TYPE_SENSE_MASK) == IRQ_TYPE_EDGE_BOTH)
dwapb_toggle_trigger(gpio, hwirq);
}
- return ret;
+ return irq_status;
}
static void dwapb_irq_handler(struct irq_desc *desc)
@@ -216,10 +215,9 @@ static void dwapb_irq_handler(struct irq_desc *desc)
struct dwapb_gpio *gpio = irq_desc_get_handler_data(desc);
struct irq_chip *chip = irq_desc_get_chip(desc);
+ chained_irq_enter(chip, desc);
dwapb_do_irq(gpio);
-
- if (chip->irq_eoi)
- chip->irq_eoi(irq_desc_get_irq_data(desc));
+ chained_irq_exit(chip, desc);
}
static void dwapb_irq_enable(struct irq_data *d)
--
2.25.1
next prev parent reply other threads:[~2020-04-09 14:12 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-09 14:12 [PATCH v1 00/13] gpio: dwapb: Clean up the driver and a fix Andy Shevchenko
2020-04-09 14:12 ` [PATCH v1 01/13] gpio: dwapb: Append MODULE_ALIAS for platform driver Andy Shevchenko
2020-04-15 11:58 ` Serge Semin
2020-04-09 14:12 ` Andy Shevchenko [this message]
2020-04-15 12:04 ` [PATCH v1 02/13] gpio: dwapb: Refactor IRQ handler Serge Semin
2020-04-15 12:35 ` Andy Shevchenko
2020-04-09 14:12 ` [PATCH v1 03/13] gpio: dwapb: set default handler to be handle_bad_irq() Andy Shevchenko
2020-04-15 12:22 ` Serge Semin
2020-04-15 12:33 ` Andy Shevchenko
2020-04-09 14:12 ` [PATCH v1 04/13] gpio: dwapb: Deduplicate IRQ resource management Andy Shevchenko
2020-04-15 12:28 ` Serge Semin
2020-04-09 14:12 ` [PATCH v1 05/13] gpio: dwapb: Convert to use irqd_to_hwirq() Andy Shevchenko
2020-04-15 12:42 ` Serge Semin
2020-04-15 13:16 ` Andy Shevchenko
2020-04-09 14:12 ` [PATCH v1 06/13] gpio: dwapb: Use device_get_match_data() to simplify code Andy Shevchenko
2020-04-15 12:46 ` Serge Semin
2020-04-09 14:12 ` [PATCH v1 07/13] gpio: dwapb: Convert to use IRQ core provided macros Andy Shevchenko
2020-04-15 12:57 ` Serge Semin
2020-04-09 14:12 ` [PATCH v1 08/13] gpio: dwapb: Switch to more usual pattern of RMW in dwapb_gpio_set_debounce() Andy Shevchenko
2020-04-15 13:00 ` Serge Semin
2020-04-09 14:12 ` [PATCH v1 09/13] gpio: dwapb: Drop bogus BUG_ON()s Andy Shevchenko
2020-04-15 13:05 ` Serge Semin
2020-04-09 14:12 ` [PATCH v1 10/13] gpio: dwapb: Drop of_match_ptr() & ACPI_PTR() calls Andy Shevchenko
2020-04-15 13:07 ` Serge Semin
2020-04-09 14:12 ` [PATCH v1 11/13] gpio: dwapb: Split out dwapb_get_irq() helper Andy Shevchenko
2020-04-15 13:13 ` Serge Semin
2020-04-09 14:12 ` [PATCH v1 12/13] gpio: dwapb: Use positive conditional in dwapb_configure_irqs() Andy Shevchenko
2020-04-09 14:12 ` [PATCH v1 13/13] gpio: dwapb: Amend indentation in some cases Andy Shevchenko
2020-04-09 14:28 ` [PATCH v1 00/13] gpio: dwapb: Clean up the driver and a fix Serge Semin
2020-04-15 11:55 ` Serge Semin
2020-04-15 12:06 ` Andy Shevchenko
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