GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/drivers/input/twl4030.c

@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * TWL4030 input
+ *
+ * Copyright (C) 2015 Paul Kocialkowski <contact@paulk.fr>
+ */
+
+#include <twl4030.h>
+
+int twl4030_input_power_button(void)
+{
+	u8 data;
+
+	twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
+			    TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data);
+
+	if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_PWON)
+		return 1;
+
+	return 0;
+}
+
+int twl4030_input_charger(void)
+{
+	u8 data;
+
+	twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
+			    TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data);
+
+	if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_CHG)
+		return 1;
+
+	return 0;
+}
+
+int twl4030_input_usb(void)
+{
+	u8 data;
+
+	twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
+			    TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data);
+
+	if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_USB ||
+	    data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_VBUS)
+		return 1;
+
+	return 0;
+}
+
+int twl4030_keypad_scan(unsigned char *matrix)
+{
+	u8 data;
+	u8 c, r;
+
+	twl4030_i2c_read_u8(TWL4030_CHIP_KEYPAD,
+			    TWL4030_KEYPAD_KEYP_CTRL_REG, &data);
+
+	data |= TWL4030_KEYPAD_CTRL_SOFT_NRST | TWL4030_KEYPAD_CTRL_KBD_ON;
+	data &= ~TWL4030_KEYPAD_CTRL_SOFTMODEN;
+
+	twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
+			     TWL4030_KEYPAD_KEYP_CTRL_REG, data);
+
+	for (c = 0; c < 8; c++) {
+		data = 0xff & ~(1 << c);
+		twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
+				     TWL4030_KEYPAD_KBC_REG, data);
+
+		data = 0xff;
+		twl4030_i2c_read_u8(TWL4030_CHIP_KEYPAD,
+				    TWL4030_KEYPAD_KBR_REG, &data);
+
+		for (r = 0; r < 8; r++)
+			matrix[c * 8 + r] = !(data & (1 << r));
+	}
+
+	data = 0xff & ~(TWL4030_KEYPAD_CTRL_SOFT_NRST);
+	twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
+			     TWL4030_KEYPAD_KEYP_CTRL_REG, data);
+
+	return 0;
+}
+
+int twl4030_keypad_key(unsigned char *matrix, u8 c, u8 r)
+{
+	return matrix[c * 8 + r];
+}