GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/drivers/power/pmic/s2mps11.c

@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ *  Copyright (C) 2015 Samsung Electronics
+ *  Przemyslaw Marczak  <p.marczak@samsung.com>
+ */
+
+#include <common.h>
+#include <fdtdec.h>
+#include <errno.h>
+#include <dm.h>
+#include <i2c.h>
+#include <power/pmic.h>
+#include <power/s2mps11.h>
+
+static const struct pmic_child_info pmic_children_info[] = {
+	{ .prefix = S2MPS11_OF_LDO_PREFIX, .driver = S2MPS11_LDO_DRIVER },
+	{ .prefix = S2MPS11_OF_BUCK_PREFIX, .driver = S2MPS11_BUCK_DRIVER },
+	{ },
+};
+
+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)
+		pr_err("write error to device: %p register: %#x!\n", 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)
+		pr_err("read error from device: %p register: %#x!\n", dev, reg);
+
+	return ret;
+}
+
+static int s2mps11_probe(struct udevice *dev)
+{
+	ofnode regulators_node;
+	int children;
+
+	regulators_node = dev_read_subnode(dev, "voltage-regulators");
+	if (!ofnode_valid(regulators_node)) {
+		debug("%s: %s regulators subnode not found!\n", __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)
+		debug("%s: %s - no child found\n", __func__, dev->name);
+
+	return 0;
+}
+
+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,
+	.probe = s2mps11_probe,
+};