[PATCH v7 06/12] mfd: input: bd71828: Add power-key support

Matti Vaittinen
2019-12-19T09:51:55Z

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@fi.rohmeurope.com>
Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
---

No changes since v6

drivers/mfd/rohm-bd71828.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)

diff --git a/drivers/mfd/rohm-bd71828.c b/drivers/mfd/rohm-bd71828.c
index 0ec386c9f26b..210261d026f2 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"),
@@ -35,6 +49,10 @@ static struct mfd_cell bd71828_mfd_cells[] = {
.name = "bd71828-rtc",
.resources = rtc_irqs,
.num_resources = ARRAY_SIZE(rtc_irqs),
+ }, {
+ .name = "gpio-keys",
+ .platform_data = &bd71828_powerkey_data,
+ .pdata_size = sizeof(bd71828_powerkey_data),
},
};

@@ -288,6 +306,14 @@ static int bd71828_i2c_probe(struct i2c_client *i2c)
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,