power: Add support for LTC3676 PMIC
The LTC3676 PMIC includes four DC/DC converters, and three 300mA
LDO Regulators (two Adjustable). The DC/DC converters are adjustable based
on a resistor devider (board-specific).
This adds support for the LTC3676 by creating a namespace unique init function
that uses the PMIC API to allocate a pmic and defines the registers.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Acked-by: Stefano Babic <sbabic@denx.de>
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index 4129bda..920bbdc 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -5,6 +5,7 @@
# SPDX-License-Identifier: GPL-2.0+
#
+obj-$(CONFIG_POWER_LTC3676) += pmic_ltc3676.o
obj-$(CONFIG_POWER_MAX8998) += pmic_max8998.o
obj-$(CONFIG_POWER_MAX8997) += pmic_max8997.o
obj-$(CONFIG_POWER_MUIC_MAX8997) += muic_max8997.o
diff --git a/drivers/power/pmic/pmic_ltc3676.c b/drivers/power/pmic/pmic_ltc3676.c
new file mode 100644
index 0000000..9b874cb
--- /dev/null
+++ b/drivers/power/pmic/pmic_ltc3676.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2014 Gateworks Corporation
+ * Tim Harvey <tharvey@gateworks.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <i2c.h>
+#include <power/pmic.h>
+#include <power/ltc3676_pmic.h>
+
+int power_ltc3676_init(unsigned char bus)
+{
+ static const char name[] = "LTC3676_PMIC";
+ struct pmic *p = pmic_alloc();
+
+ if (!p) {
+ printf("%s: POWER allocation error!\n", __func__);
+ return -ENOMEM;
+ }
+
+ p->name = name;
+ p->interface = PMIC_I2C;
+ p->number_of_regs = LTC3676_NUM_OF_REGS;
+ p->hw.i2c.addr = CONFIG_POWER_LTC3676_I2C_ADDR;
+ p->hw.i2c.tx_num = 1;
+ p->bus = bus;
+
+ return 0;
+}