power: pmic: lp87565: Add the basic pmic support

Add support to bind the regulators/child nodes with the pmic.

Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>

diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
index 3f50c121571d5077b80bf07cc382128df84744c5..e3f9e4dfc0deedf1cc243b5813c97717337fad24 100644 (file)
--- a/drivers/power/pmic/Kconfig
+++ b/drivers/power/pmic/Kconfig
@@ -188,6 +188,13 @@ config PMIC_LP873X
        The LP873X is a PMIC containing couple of LDOs and couple of SMPS.
        This driver binds the pmic children.
 
+config PMIC_LP87565
+       bool "Enable driver for Texas Instruments LP87565 PMIC"
+       depends on DM_PMIC
+       ---help---
+       The LP87565 is a PMIC containing a bunch of SMPS.
+       This driver binds the pmic children.
+
 config POWER_MC34VR500
        bool "Enable driver for Freescale MC34VR500 PMIC"
        ---help---

diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index f409e3a0b36c3c368d01db316ca4b2b1a1e3b811..f488799a923458b221d19c207bde77c9eeb65743 100644 (file)
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_PMIC_TPS65090) += tps65090.o
 obj-$(CONFIG_PMIC_S5M8767) += s5m8767.o
 obj-$(CONFIG_$(SPL_)PMIC_PALMAS) += palmas.o
 obj-$(CONFIG_$(SPL_)PMIC_LP873X) += lp873x.o
+obj-$(CONFIG_$(SPL_)PMIC_LP87565) += lp87565.o
 
 obj-$(CONFIG_POWER_LTC3676) += pmic_ltc3676.o
 obj-$(CONFIG_POWER_MAX77696) += pmic_max77696.o

diff --git a/drivers/power/pmic/lp87565.c b/drivers/power/pmic/lp87565.c
new file mode 100644 (file)
index 0000000..782a46c
--- /dev/null
+++ b/drivers/power/pmic/lp87565.c
@@ -0,0 +1,87 @@
+/*
+ * (C) Copyright 2017 Texas Instruments Incorporated, <www.ti.com>
+ * Keerthy <j-keerthy@ti.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/regulator.h>
+#include <power/lp87565.h>
+#include <dm/device.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const struct pmic_child_info pmic_children_info[] = {
+       { .prefix = "buck", .driver = LP87565_BUCK_DRIVER },
+       { },
+};
+
+static int lp87565_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 lp87565_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 int lp87565_bind(struct udevice *dev)
+{
+       ofnode regulators_node;
+       int children;
+
+       regulators_node = dev_read_subnode(dev, "regulators");
+       if (!ofnode_valid(regulators_node)) {
+               debug("%s: %s regulators subnode not found!", __func__,
+                     dev->name);
+               return -ENXIO;
+       }
+
+       debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
+
+       children = pmic_bind_children(dev, regulators_node, pmic_children_info);
+       if (!children)
+               printf("%s: %s - no child found\n", __func__, dev->name);
+
+       /* Always return success for this device */
+       return 0;
+}
+
+static struct dm_pmic_ops lp87565_ops = {
+       .read = lp87565_read,
+       .write = lp87565_write,
+};
+
+static const struct udevice_id lp87565_ids[] = {
+       { .compatible = "ti,lp87565", .data = LP87565 },
+       { .compatible = "ti,lp87565-q1", .data = LP87565_Q1 },
+       { }
+};
+
+U_BOOT_DRIVER(pmic_lp87565) = {
+       .name = "lp87565_pmic",
+       .id = UCLASS_PMIC,
+       .of_match = lp87565_ids,
+       .bind = lp87565_bind,
+       .ops = &lp87565_ops,
+};

diff --git a/include/power/lp87565.h b/include/power/lp87565.h
new file mode 100644 (file)
index 0000000..5160f5d
--- /dev/null
+++ b/include/power/lp87565.h
@@ -0,0 +1,12 @@
+#define LP87565        0x0
+#define LP87565_Q1     0x1
+
+#define LP87565_BUCK_NUM               6
+
+/* Drivers name */
+#define LP87565_BUCK_DRIVER    "lp87565_buck"
+
+#define LP87565_BUCK_VOLT_MASK         0xFF
+#define LP87565_BUCK_VOLT_MAX_HEX      0xFF
+#define LP87565_BUCK_VOLT_MAX          3360000
+#define LP87565_BUCK_MODE_MASK         0x80