Add Active-Semi act8865 series PMU support.
Signed-off-by: Bo Shen <voice.s...@atmel.com>
---
drivers/power/Makefile | 1 +
drivers/power/act8865.c | 104 ++++++++++++++++++++++++++++++++++++++++++++++++
include/act8865.h | 54 +++++++++++++++++++++++++
3 files changed, 159 insertions(+)
create mode 100644 drivers/power/act8865.c
create mode 100644 include/act8865.h
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index 2145652..0c2a8cf 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -5,6 +5,7 @@
# SPDX-License-Identifier: GPL-2.0+
#
+obj-$(CONFIG_ACT8865_POWER) += act8865.o
obj-$(CONFIG_AS3722_POWER) += as3722.o
obj-$(CONFIG_AXP152_POWER) += axp152.o
obj-$(CONFIG_AXP209_POWER) += axp209.o
diff --git a/drivers/power/act8865.c b/drivers/power/act8865.c
new file mode 100644
index 0000000..c36f7bd
--- /dev/null
+++ b/drivers/power/act8865.c
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2015 Atmel Corporation
+ * Bo Shen <voice.s...@atmel.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <act8865.h>
+
+static int act8865_read(u32 reg, uchar *val)
+{
+ return i2c_read(ACT8865_I2C_ADDR, reg, 1, val, 1);
+}
+
+static int act8865_write(u32 reg, uchar val)
+{
+ return i2c_write(ACT8865_I2C_ADDR, reg, 1, &val, 1);
+}
+
+int act8865_disable_i2c_interface(void)
+{
+ uchar val;
+
+ /* Check the I2C interface is disabled or not */
+ if (act8865_read(ACT8865_SYS_CONTROL0, &val)) {
+ debug("ACT8865: i2c interface has been disabled\n");
+ return 0;
+ }
+
+ /*
+ * As the ACT8865 don't have ID register, so we try one by one
+ * to disable the exist chips (303, 304, 305) in this series.
+ */
+
+ /* Try to disable ACT8865QI303 */
+ act8865_write(0x0B, 0xE9);
+ act8865_write(0x02, 0x07);
+ if (act8865_write(0x03, 0x01)) {
+ debug("ACT8865: subtype 303 has been disabled\n");
+ return 0;
+ }
+
+ /* Try to disable ACT8865QI304 */
+ act8865_write(0x0B, 0xEE);
+ act8865_write(0x02, 0x07);
+ if (act8865_write(0x03, 0x01)) {
+ debug("ACT8865: subtype 304 has been disabled\n");
+ return 0;
+ }
+
+ /* Try to disable ACT8865QI305 */
+ act8865_write(0x0B, 0xEE);
+ act8865_write(0x02, 0x07);
+ if (act8865_write(0x03, 0x01)) {
+ debug("ACT8865: subtype 305 has been disabled\n");
+ return 0;
+ }
+
+ debug("ACT8865: the chip can not be disabled\n");
+
+ return 0;
+}
+
+int act8865_enable_ldo_output(enum act8865_ldo ldo, enum act8865_volt volt)
+{
+ u32 conf_reg, ctrl_reg;
+ uchar val;
+
+ switch (ldo) {
+ case ACT8865_LDO_REG4:
+ conf_reg = ACT8865_REG4_CONFIG0;
+ ctrl_reg = ACT8865_REG4_CONTROL;
+ break;
+
+ case ACT8865_LDO_REG5:
+ conf_reg = ACT8865_REG5_CONFIG0;
+ ctrl_reg = ACT8865_REG5_CONTROL;
+ break;
+
+ case ACT8865_LDO_REG6:
+ conf_reg = ACT8865_REG6_CONFIG0;
+ ctrl_reg = ACT8865_REG6_CONTROL;
+ break;
+
+ case ACT8865_LDO_REG7:
+ conf_reg = ACT8865_REG7_CONFIG0;
+ ctrl_reg = ACT8865_REG7_CONTROL;
+ break;
+ default:
+ error("ACT8865: unsupported LDO\n");
+ return -1;
+ }
+
+ /* Set the LDO output voltage */
+ act8865_write(conf_reg, 0x18);
+ /* Enable the LDO */
+ act8865_read(ctrl_reg, &val);
+ val |= ACT8865_OUTPUT_ENABLE;
+ act8865_write(ctrl_reg, val);
+
+ return 0;
+}
diff --git a/include/act8865.h b/include/act8865.h
new file mode 100644
index 0000000..f6053ac
--- /dev/null
+++ b/include/act8865.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2015 Atmel Corporation
+ * Bo Shen <voice.s...@atmel.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#define ACT8865_SYS_CONTROL0 0x00
+#define ACT8865_SYS_CONTROL1 0x01
+
+#define ACT8865_REG1_CONFIG0 0x20
+#define ACT8865_REG1_CONFIG1 0x21
+#define ACT8865_REG1_CONTROL 0x22
+
+#define ACT8865_REG2_CONFIG0 0x30
+#define ACT8865_REG2_CONFIG1 0x31
+#define ACT8865_REG2_CONTROL 0x32
+
+#define ACT8865_REG3_CONFIG0 0x40
+#define ACT8865_REG3_CONFIG1 0x41
+#define ACT8865_REG3_CONTROL 0x42
+
+#define ACT8865_REG4_CONFIG0 0x50
+#define ACT8865_REG4_CONTROL 0x51
+
+#define ACT8865_REG5_CONFIG0 0x54
+#define ACT8865_REG5_CONTROL 0x55
+
+#define ACT8865_REG6_CONFIG0 0x60
+#define ACT8865_REG6_CONTROL 0x61
+
+#define ACT8865_REG7_CONFIG0 0x64
+#define ACT8865_REG7_CONTROL 0x65
+
+#define ACT8865_OUTPUT_ENABLE (0x01 << 7)
+
+#define ACT8865_I2C_ADDR 0x5B
+
+enum act8865_ldo {
+ ACT8865_LDO_REG4 = 4,
+ ACT8865_LDO_REG5,
+ ACT8865_LDO_REG6,
+ ACT8865_LDO_REG7,
+};
+
+enum act8865_volt {
+ ACT8865_1V2_VOLT,
+ ACT8865_1V8_VOLT,
+ ACT8865_2V5_VOLT,
+ ACT8865_3V3_VOLT,
+};
+
+int act8865_enable_ldo_output(enum act8865_ldo ldo, enum act8865_volt volt);
+int act8865_disable_i2c_interface(void);
--
2.3.0
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