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

source/bootloader/u-boot-2020.01/drivers/power/pmic/max8997.c

@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ *  Copyright (C) 2016 Samsung Electronics
+ *  Jaehoon Chung <jh80.chung@samsung.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <i2c.h>
+#include <power/pmic.h>
+#include <power/max8997_pmic.h>
+#include <errno.h>
+
+static int max8997_reg_count(struct udevice *dev)
+{
+	return PMIC_NUM_OF_REGS;
+}
+
+static int max8997_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 max8997_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 struct dm_pmic_ops max8997_ops = {
+	.reg_count = max8997_reg_count,
+	.read	= max8997_read,
+	.write	= max8997_write,
+};
+
+static const struct udevice_id max8997_ids[] = {
+	{ .compatible = "maxim,max8997" },
+	{ },
+};
+
+U_BOOT_DRIVER(pmic_max8997) = {
+	.name		= "max8997_pmic",
+	.id		= UCLASS_PMIC,
+	.of_match	= max8997_ids,
+	.ops		= &max8997_ops,
+};