dm: pmic: add s2mps11 PMIC I/O driver
This driver allows I/O operations on the Samsung S2MPS11 PMIC,
which provides lots of LDO/BUCK outputs.
To enable it, update defconfig with:
- CONFIG_PMIC_S2MPS11
and additional, if were not defined:
- CONFIG_CMD_PMIC
- CONFIG_ERRNO_STR
The binding info: doc/device-tree-bindings/pmic/s2mps11.txt
Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
index 547fd1a..fb29843 100644
--- a/drivers/power/pmic/Kconfig
+++ b/drivers/power/pmic/Kconfig
@@ -33,6 +33,20 @@
This config enables implementation of driver-model pmic uclass features
for PMIC MAX77686. The driver implements read/write operations.
+config PMIC_S2MPS11
+ bool "Enable Driver Model for PMIC Samsung S2MPS11"
+ depends on DM_PMIC
+ ---help---
+ The Samsung S2MPS11 PMIC provides:
+ - 38 adjustable LDO regulators
+ - 9 High-Efficiency Buck Converters
+ - 1 BuckBoost Converter
+ - RTC with two alarms
+ - Backup battery charger
+ - I2C Configuration Interface
+ This driver provides access to I/O interface only.
+ Binding info: doc/device-tree-bindings/pmic/s2mps11.txt
+
config DM_PMIC_SANDBOX
bool "Enable Driver Model for emulated Sandbox PMIC "
depends on DM_PMIC
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index 00fde71..91e78f8 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -8,6 +8,7 @@
obj-$(CONFIG_DM_PMIC) += pmic-uclass.o
obj-$(CONFIG_DM_PMIC_MAX77686) += max77686.o
obj-$(CONFIG_DM_PMIC_PFUZE100) += pfuze100.o
+obj-$(CONFIG_PMIC_S2MPS11) += s2mps11.o
obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o
obj-$(CONFIG_PMIC_ACT8846) += act8846.o
obj-$(CONFIG_PMIC_TPS65090) += tps65090.o
diff --git a/drivers/power/pmic/s2mps11.c b/drivers/power/pmic/s2mps11.c
new file mode 100644
index 0000000..9d83059
--- /dev/null
+++ b/drivers/power/pmic/s2mps11.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2015 Samsung Electronics
+ * Przemyslaw Marczak <p.marczak@samsung.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <fdtdec.h>
+#include <errno.h>
+#include <dm.h>
+#include <i2c.h>
+#include <power/pmic.h>
+#include <power/s2mps11.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int s2mps11_reg_count(struct udevice *dev)
+{
+ return S2MPS11_REG_COUNT;
+}
+
+static int s2mps11_write(struct udevice *dev, uint reg, const uint8_t *buff,
+ int len)
+{
+ int ret;
+
+ ret = dm_i2c_write(dev, reg, buff, len);
+ if (ret)
+ error("write error to device: %p register: %#x!", dev, reg);
+
+ return ret;
+}
+
+static int s2mps11_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
+{
+ int ret;
+
+ ret = dm_i2c_read(dev, reg, buff, len);
+ if (ret)
+ error("read error from device: %p register: %#x!", dev, reg);
+
+ return ret;
+}
+
+static struct dm_pmic_ops s2mps11_ops = {
+ .reg_count = s2mps11_reg_count,
+ .read = s2mps11_read,
+ .write = s2mps11_write,
+};
+
+static const struct udevice_id s2mps11_ids[] = {
+ { .compatible = "samsung,s2mps11-pmic" },
+ { }
+};
+
+U_BOOT_DRIVER(pmic_s2mps11) = {
+ .name = "s2mps11_pmic",
+ .id = UCLASS_PMIC,
+ .of_match = s2mps11_ids,
+ .ops = &s2mps11_ops,
+};