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Commit 37bce070 authored by Mark Brown's avatar Mark Brown Committed by Samuel Ortiz
Browse files

mfd: Convert WM8350 to use request_threaded_irq() 



Instead of hand rolling our own variant.

Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 3860e6c4

drivers/mfd/wm8350-core.c

+6 −18
Original line number Diff line number Diff line
@@ -353,15 +353,15 @@ static void wm8350_irq_call_handler(struct wm8350 *wm8350, int irq) 
}



/*

 * wm8350_irq_worker actually handles the interrupts.  Since all

 * This is a threaded IRQ handler so can access I2C/SPI.  Since all

 * interrupts are clear on read the IRQ line will be reasserted and

 * the physical IRQ will be handled again if another interrupt is

 * asserted while we run - in the normal course of events this is a

 * rare occurrence so we save I2C/SPI reads.

 */

static void wm8350_irq_worker(struct work_struct *work)

static irqreturn_t wm8350_irq(int irq, void *data)

{

	struct wm8350 *wm8350 = container_of(work, struct wm8350, irq_work);

	struct wm8350 *wm8350 = data;

	u16 level_one, status1, status2, comp;



	/* TODO: Use block reads to improve performance? */
@@ -552,16 +552,6 @@ static void wm8350_irq_worker(struct work_struct *work) 
		}

	}



	enable_irq(wm8350->chip_irq);

}



static irqreturn_t wm8350_irq(int irq, void *data)

{

	struct wm8350 *wm8350 = data;



	disable_irq_nosync(irq);

	schedule_work(&wm8350->irq_work);



	return IRQ_HANDLED;

}
@@ -1428,9 +1418,8 @@ int wm8350_device_init(struct wm8350 *wm8350, int irq, 


	mutex_init(&wm8350->auxadc_mutex);

	mutex_init(&wm8350->irq_mutex);

	INIT_WORK(&wm8350->irq_work, wm8350_irq_worker);

	if (irq) {

		int flags = 0;

		int flags = IRQF_ONESHOT;



		if (pdata && pdata->irq_high) {

			flags |= IRQF_TRIGGER_HIGH;
@@ -1444,7 +1433,7 @@ int wm8350_device_init(struct wm8350 *wm8350, int irq, 
					  WM8350_IRQ_POL);

		}



		ret = request_irq(irq, wm8350_irq, flags,

		ret = request_threaded_irq(irq, NULL, wm8350_irq, flags,

					   "wm8350", wm8350);

		if (ret != 0) {

			dev_err(wm8350->dev, "Failed to request IRQ: %d\n",
@@ -1505,7 +1494,6 @@ void wm8350_device_exit(struct wm8350 *wm8350) 
	platform_device_unregister(wm8350->codec.pdev);



	free_irq(wm8350->chip_irq, wm8350);

	flush_work(&wm8350->irq_work);

	kfree(wm8350->reg_cache);

}

EXPORT_SYMBOL_GPL(wm8350_device_exit);

include/linux/mfd/wm8350/core.h

+0 −1
Original line number Diff line number Diff line
@@ -626,7 +626,6 @@ struct wm8350 { 
	struct mutex auxadc_mutex;



	/* Interrupt handling */

	struct work_struct irq_work;

	struct mutex irq_mutex; /* IRQ table mutex */

	struct wm8350_irq irq[WM8350_NUM_IRQ];

	int chip_irq;