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

source/bootloader/u-boot-2020.01/drivers/power/pmic/pmic_tps65910_dm.c

@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) EETS GmbH, 2017, Felix Brack <f.brack@eets.ch>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <i2c.h>
+#include <power/pmic.h>
+#include <power/regulator.h>
+#include <power/tps65910_pmic.h>
+
+static const struct pmic_child_info pmic_children_info[] = {
+	{ .prefix = "ldo_", .driver = TPS65910_LDO_DRIVER },
+	{ .prefix = "buck_", .driver = TPS65910_BUCK_DRIVER },
+	{ .prefix = "boost_", .driver = TPS65910_BOOST_DRIVER },
+	{ },
+};
+
+static int pmic_tps65910_reg_count(struct udevice *dev)
+{
+	return TPS65910_NUM_REGS;
+}
+
+static int pmic_tps65910_write(struct udevice *dev, uint reg, const u8 *buffer,
+			       int len)
+{
+	int ret;
+
+	ret = dm_i2c_write(dev, reg, buffer, len);
+	if (ret)
+		pr_err("%s write error on register %02x\n", dev->name, reg);
+
+	return ret;
+}
+
+static int pmic_tps65910_read(struct udevice *dev, uint reg, u8 *buffer,
+			      int len)
+{
+	int ret;
+
+	ret = dm_i2c_read(dev, reg, buffer, len);
+	if (ret)
+		pr_err("%s read error on register %02x\n", dev->name, reg);
+
+	return ret;
+}
+
+static int pmic_tps65910_bind(struct udevice *dev)
+{
+	ofnode regulators_node;
+	int children;
+
+	regulators_node = dev_read_subnode(dev, "regulators");
+	if (!ofnode_valid(regulators_node)) {
+		debug("%s regulators subnode not found\n", dev->name);
+		return -EINVAL;
+	}
+
+	children = pmic_bind_children(dev, regulators_node, pmic_children_info);
+	if (!children)
+		debug("%s has no children (regulators)\n", dev->name);
+
+	return 0;
+}
+
+static int pmic_tps65910_probe(struct udevice *dev)
+{
+	/* use I2C control interface instead of I2C smartreflex interface to
+	 * access smartrefelex registers VDD1_OP_REG, VDD1_SR_REG, VDD2_OP_REG
+	 * and VDD2_SR_REG
+	 */
+	return pmic_clrsetbits(dev, TPS65910_REG_DEVICE_CTRL, 0,
+			       TPS65910_I2C_SEL_MASK);
+}
+
+static struct dm_pmic_ops pmic_tps65910_ops = {
+	.reg_count = pmic_tps65910_reg_count,
+	.read = pmic_tps65910_read,
+	.write = pmic_tps65910_write,
+};
+
+static const struct udevice_id pmic_tps65910_match[] = {
+	{ .compatible = "ti,tps65910" },
+	{ /* sentinel */ }
+};
+
+U_BOOT_DRIVER(pmic_tps65910) = {
+	.name = "pmic_tps65910",
+	.id = UCLASS_PMIC,
+	.of_match = pmic_tps65910_match,
+	.bind = pmic_tps65910_bind,
+	.probe = pmic_tps65910_probe,
+	.ops = &pmic_tps65910_ops,
+};