power: pmic: lp873x: Add the base pmic support
Add support to bind the regulators/child nodes with the pmic.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/power/pmic/lp873x.c b/drivers/power/pmic/lp873x.c
new file mode 100644
index 0000000..307f96b
--- /dev/null
+++ b/drivers/power/pmic/lp873x.c
@@ -0,0 +1,86 @@
+/*
+ * (C) Copyright 2016 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/lp873x.h>
+#include <dm/device.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const struct pmic_child_info pmic_children_info[] = {
+ { .prefix = "ldo", .driver = LP873X_LDO_DRIVER },
+ { .prefix = "buck", .driver = LP873X_BUCK_DRIVER },
+ { },
+};
+
+static int lp873x_write(struct udevice *dev, uint reg, const uint8_t *buff,
+ int len)
+{
+ if (dm_i2c_write(dev, reg, buff, len)) {
+ error("write error to device: %p register: %#x!", dev, reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int lp873x_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
+{
+ if (dm_i2c_read(dev, reg, buff, len)) {
+ error("read error from device: %p register: %#x!", dev, reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int lp873x_bind(struct udevice *dev)
+{
+ int regulators_node;
+ const void *blob = gd->fdt_blob;
+ int children;
+ int node = dev->of_offset;
+
+ regulators_node = fdt_subnode_offset(blob, node, "regulators");
+
+ if (regulators_node <= 0) {
+ printf("%s: %s reg subnode not found!", __func__, dev->name);
+ return -ENXIO;
+ }
+
+ 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 lp873x_ops = {
+ .read = lp873x_read,
+ .write = lp873x_write,
+};
+
+static const struct udevice_id lp873x_ids[] = {
+ { .compatible = "ti,lp8732", .data = LP8732 },
+ { .compatible = "ti,lp8733" , .data = LP8733 },
+ { }
+};
+
+U_BOOT_DRIVER(pmic_lp873x) = {
+ .name = "lp873x_pmic",
+ .id = UCLASS_PMIC,
+ .of_match = lp873x_ids,
+ .bind = lp873x_bind,
+ .ops = &lp873x_ops,
+};