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authorPaul Kocialkowski <contact@paulk.fr>2016-02-27 19:19:13 +0100
committerTom Rini <trini@konsulko.com>2016-03-15 15:12:57 -0400
commit461484c27e1d72980eae4826eb9788a156cdf00e (patch)
tree74d9dc1e146c181fb301fa2b7afcbc61e8a7313c /drivers/input
parentd6a2042dbcd4a3a3d8282c77a5882104a5c399a7 (diff)
input: TWL6030 input support for power button, USB and charger
This adds support for detecting a few inputs exported by the TWL6030. Currently-supported inputs are the power button, USB and charger presence. Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/Makefile1
-rw-r--r--drivers/input/twl6030.c48
2 files changed, 49 insertions, 0 deletions
diff --git a/drivers/input/Makefile b/drivers/input/Makefile
index 5f15265be5b..9109ac6dbad 100644
--- a/drivers/input/Makefile
+++ b/drivers/input/Makefile
@@ -10,6 +10,7 @@ obj-$(CONFIG_DM_KEYBOARD) += keyboard-uclass.o
obj-$(CONFIG_I8042_KEYB) += i8042.o
obj-$(CONFIG_TEGRA_KEYBOARD) += tegra-kbc.o
obj-$(CONFIG_TWL4030_INPUT) += twl4030.o
+obj-$(CONFIG_TWL6030_INPUT) += twl6030.o
obj-$(CONFIG_CROS_EC_KEYB) += cros_ec_keyb.o
ifdef CONFIG_PS2KBD
obj-y += keyboard.o pc_keyb.o
diff --git a/drivers/input/twl6030.c b/drivers/input/twl6030.c
new file mode 100644
index 00000000000..8de032a1cd0
--- /dev/null
+++ b/drivers/input/twl6030.c
@@ -0,0 +1,48 @@
+/*
+ * TWL6030 input
+ *
+ * Copyright (C) 2016 Paul Kocialkowski <contact@paulk.fr>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <twl6030.h>
+
+int twl6030_input_power_button(void)
+{
+ u8 value;
+
+ twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_STS_HW_CONDITIONS, &value);
+
+ /* Power button is active low. */
+ if (value & TWL6030_STS_HW_CONDITIONS_PWRON)
+ return 0;
+
+ return 1;
+}
+
+int twl6030_input_charger(void)
+{
+ u8 value;
+
+ twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, TWL6030_CONTROLLER_STAT1,
+ &value);
+
+ if (value & TWL6030_CONTROLLER_STAT1_VAC_DET)
+ return 1;
+
+ return 0;
+}
+
+int twl6030_input_usb(void)
+{
+ u8 value;
+
+ twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, TWL6030_CONTROLLER_STAT1,
+ &value);
+
+ if (value & TWL6030_CONTROLLER_STAT1_VBUS_DET)
+ return 1;
+
+ return 0;
+}