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

source/bootloader/u-boot-2020.01/drivers/power/pmic/rn5t567.c

@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2016 Toradex AG
+ * Stefan Agner <stefan.agner@toradex.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <fdtdec.h>
+#include <linux/libfdt.h>
+#include <power/rn5t567_pmic.h>
+#include <power/pmic.h>
+
+static int rn5t567_reg_count(struct udevice *dev)
+{
+	return RN5T567_NUM_OF_REGS;
+}
+
+static int rn5t567_write(struct udevice *dev, uint reg, const uint8_t *buff,
+			  int len)
+{
+	int ret;
+
+	ret = dm_i2c_write(dev, reg, buff, len);
+	if (ret) {
+		debug("write error to device: %p register: %#x!\n", dev, reg);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int rn5t567_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
+{
+	int ret;
+
+	ret = dm_i2c_read(dev, reg, buff, len);
+	if (ret) {
+		debug("read error from device: %p register: %#x!\n", dev, reg);
+		return ret;
+	}
+
+	return 0;
+}
+
+static struct dm_pmic_ops rn5t567_ops = {
+	.reg_count = rn5t567_reg_count,
+	.read = rn5t567_read,
+	.write = rn5t567_write,
+};
+
+static const struct udevice_id rn5t567_ids[] = {
+	{ .compatible = "ricoh,rn5t567" },
+	{ }
+};
+
+U_BOOT_DRIVER(pmic_rn5t567) = {
+	.name = "rn5t567 pmic",
+	.id = UCLASS_PMIC,
+	.of_match = rn5t567_ids,
+	.ops = &rn5t567_ops,
+};