Change in coreboot[master]: drivers/gpio_keys: Add label and SW_MUTE_DEVICE

[Ben Zhang (Code Review)]

Ben Zhang has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/54332 )

Change subject: drivers/gpio_keys: Add label and SW_MUTE_DEVICE
......................................................................

drivers/gpio_keys: Add label and SW_MUTE_DEVICE

Added the label field to the gpio_keys DSD so that
the kernel driver can use a meaningful name instead
of the generic _HID PRP0001.

Added SW_MUTE_DEVICE event type for mic mute switch.

BUG=b:184593945
TEST=build image and verify with evtest on puff:
/dev/input/event3:	mic_mute_switch
UI event_device_info receives the proper name.

Change-Id: I0377851b9cf23bab31930aed6e7de91b4ac3505b
Signed-off-by: Ben Zhang 
---
M src/drivers/generic/gpio_keys/chip.h
M src/drivers/generic/gpio_keys/gpio_keys.c
2 files changed, 5 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/32/54332/1

diff --git a/src/drivers/generic/gpio_keys/chip.h b/src/drivers/generic/gpio_keys/chip.h
index a2ff59d..88dfe2e 100644
--- a/src/drivers/generic/gpio_keys/chip.h
+++ b/src/drivers/generic/gpio_keys/chip.h
@@ -14,6 +14,7 @@

/* Switch events type (Linux code emitted for EV_SW) */
 enum {
+	SW_MUTE_DEVICE = 0xe,
    SW_PEN_INSERTED = 0xf,
 };

@@ -74,6 +75,8 @@
 struct drivers_generic_gpio_keys_config {
    /* Device name of the parent gpio-keys node */
    const char *name;
+	/* Name of the input device - Optional */
+	const char *label;
    /* GPIO line providing the key - Mandatory */
    struct acpi_gpio gpio;
    /* Is this a polled GPIO button? - Optional */
diff --git a/src/drivers/generic/gpio_keys/gpio_keys.c b/src/drivers/generic/gpio_keys/gpio_keys.c
index 3d273a0..75ce09f 100644
--- a/src/drivers/generic/gpio_keys/gpio_keys.c
+++ b/src/drivers/generic/gpio_keys/gpio_keys.c
@@ -76,6 +76,8 @@
    /* DSD */
    dsd = acpi_dp_new_table("_DSD");
    acpi_dp_add_string(dsd, "compatible", drv_string);
+	if (config->label)
+		acpi_dp_add_string(dsd, "label", config->label);
    if (config->is_polled)
    	acpi_dp_add_integer(dsd, "poll-interval",
    				config->poll_interval);