Use gpio_keys to send power input-event to user-space when power
button (short) press is detected.
Signed-off-by: Matti Vaittinen <matti.vaittinen@xxxxxxxxxxxxxxxxx>
---
drivers/mfd/rohm-bd71828.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/drivers/mfd/rohm-bd71828.c b/drivers/mfd/rohm-bd71828.c
index b7de79e1fcdb..f77ba1ec3e99 100644
--- a/drivers/mfd/rohm-bd71828.c
+++ b/drivers/mfd/rohm-bd71828.c
@@ -4,7 +4,9 @@
//
// ROHM BD71828 PMIC driver
+#include <linux/gpio_keys.h>
#include <linux/i2c.h>
+#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/irq.h>
@@ -15,6 +17,18 @@
#include <linux/regmap.h>
#include <linux/types.h>
+static struct gpio_keys_button button = {
+ .code = KEY_POWER,
+ .gpio = -1,
+ .type = EV_KEY,
+};
+
+static struct gpio_keys_platform_data bd71828_powerkey_data = {
+ .buttons = &button,
+ .nbuttons = 1,
+ .name = "bd71828-pwrkey",
+};
+
static const struct resource rtc_irqs[] = {
DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC0, "bd71828-rtc-alm-0"),
DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC1, "bd71828-rtc-alm-1"),
@@ -36,6 +50,10 @@ static struct mfd_cell bd71828_mfd_cells[] = {
.name = "bd70528-rtc",
.resources = rtc_irqs,
.num_resources = ARRAY_SIZE(rtc_irqs),
+ }, {
+ .name = "gpio-keys",
+ .platform_data = &bd71828_powerkey_data,
+ .pdata_size = sizeof(bd71828_powerkey_data),
},
};
@@ -288,9 +306,19 @@ static int bd71828_i2c_probe(struct i2c_client *i2c,
dev_err(&i2c->dev, "Failed to add IRQ chip\n");
return ret;
}
+
dev_dbg(&i2c->dev, "Registered %d IRQs for chip\n",
bd71828_irq_chip.num_irqs);
+ ret = regmap_irq_get_virq(irq_data, BD71828_INT_SHORTPUSH);
+
+ if (ret < 0) {
+ dev_err(&i2c->dev, "Failed to get the power-key IRQ\n");
+ return ret;
+ }
+
+ button.irq = ret;
+
ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO,
bd71828_mfd_cells,
ARRAY_SIZE(bd71828_mfd_cells), NULL, 0,
--
2.21.0
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
