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mfd: arizona: Basic support for edge triggered IRQs

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Allow the user to configure edge triggered IRQs, though we do not yet
fully handle new interrupts occurring while an interrupt is being handled.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Mark Brown 2013-03-22 12:59:33 +01:00 committed by Samuel Ortiz
parent 7994c664bd
commit f8a0941f1b
3 changed files with 11 additions and 8 deletions
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4
arch/arm/mach-s3c64xx/mach-crag6410-module.c
View File

@ -208,7 +208,7 @@ static const struct i2c_board_info wm1277_devs[] = {
static struct arizona_pdata wm5102_reva_pdata = {
.ldoena = S3C64XX_GPN(7),
.gpio_base = CODEC_GPIO_BASE,
.irq_active_high = true,
.irq_flags = IRQF_TRIGGER_HIGH,
.micd_pol_gpio = CODEC_GPIO_BASE + 4,
.gpio_defaults = {
[2] = 0x10000, /* AIF3TXLRCLK */
@ -237,7 +237,7 @@ static struct spi_board_info wm5102_reva_spi_devs[] = {
static struct arizona_pdata wm5102_pdata = {
.ldoena = S3C64XX_GPN(7),
.gpio_base = CODEC_GPIO_BASE,
.irq_active_high = true,
.irq_flags = IRQF_TRIGGER_HIGH,
.micd_pol_gpio = CODEC_GPIO_BASE + 2,
.gpio_defaults = {
[2] = 0x10000, /* AIF3TXLRCLK */

12
drivers/mfd/arizona-irq.c
View File

@ -195,7 +195,11 @@ int arizona_irq_init(struct arizona *arizona)
/* Disable all wake sources by default */
regmap_write(arizona->regmap, ARIZONA_WAKE_CONTROL, 0);
if (arizona->pdata.irq_active_high) {
if (!arizona->pdata.irq_flags)
arizona->pdata.irq_flags = IRQF_TRIGGER_LOW;
if (arizona->pdata.irq_flags & (IRQF_TRIGGER_HIGH |
IRQF_TRIGGER_RISING)) {
ret = regmap_update_bits(arizona->regmap, ARIZONA_IRQ_CTRL_1,
ARIZONA_IRQ_POL, 0);
if (ret != 0) {
@ -203,12 +207,10 @@ int arizona_irq_init(struct arizona *arizona)
ret);
goto err;
}
flags |= IRQF_TRIGGER_HIGH;
} else {
flags |= IRQF_TRIGGER_LOW;
}
flags |= arizona->pdata.irq_flags;
/* Allocate a virtual IRQ domain to distribute to the regmap domains */
arizona->virq = irq_domain_add_linear(NULL, 2, &arizona_domain_ops,
arizona);

3
include/linux/mfd/arizona/pdata.h
View File

@ -99,7 +99,8 @@ struct arizona_pdata {
/** If a direct 32kHz clock is provided on an MCLK specify it here */
int clk32k_src;
bool irq_active_high; /** IRQ polarity */
/** Mode for primary IRQ (defaults to active low) */
unsigned int irq_flags;
/* Base GPIO */
int gpio_base;