1 files changed, 180 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/rtc/rtc-uclass.c b/roms/u-boot/drivers/rtc/rtc-uclass.c
new file mode 100644
index 000000000..b406bab32
--- /dev/null
+++ b/roms/u-boot/drivers/rtc/rtc-uclass.c
@@ -0,0 +1,180 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2015 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <log.h>
+#include <rtc.h>
+
+int dm_rtc_get(struct udevice *dev, struct rtc_time *time)
+{
+	struct rtc_ops *ops = rtc_get_ops(dev);
+
+	assert(ops);
+	if (!ops->get)
+		return -ENOSYS;
+	return ops->get(dev, time);
+}
+
+int dm_rtc_set(struct udevice *dev, struct rtc_time *time)
+{
+	struct rtc_ops *ops = rtc_get_ops(dev);
+
+	assert(ops);
+	if (!ops->set)
+		return -ENOSYS;
+	return ops->set(dev, time);
+}
+
+int dm_rtc_reset(struct udevice *dev)
+{
+	struct rtc_ops *ops = rtc_get_ops(dev);
+
+	assert(ops);
+	if (!ops->reset)
+		return -ENOSYS;
+	return ops->reset(dev);
+}
+
+int dm_rtc_read(struct udevice *dev, unsigned int reg, u8 *buf, unsigned int len)
+{
+	struct rtc_ops *ops = rtc_get_ops(dev);
+
+	assert(ops);
+	if (ops->read)
+		return ops->read(dev, reg, buf, len);
+	if (!ops->read8)
+		return -ENOSYS;
+	while (len--) {
+		int ret = ops->read8(dev, reg++);
+
+		if (ret < 0)
+			return ret;
+		*buf++ = ret;
+	}
+	return 0;
+}
+
+int dm_rtc_write(struct udevice *dev, unsigned int reg,
+		 const u8 *buf, unsigned int len)
+{
+	struct rtc_ops *ops = rtc_get_ops(dev);
+
+	assert(ops);
+	if (ops->write)
+		return ops->write(dev, reg, buf, len);
+	if (!ops->write8)
+		return -ENOSYS;
+	while (len--) {
+		int ret = ops->write8(dev, reg++, *buf++);
+
+		if (ret < 0)
+			return ret;
+	}
+	return 0;
+}
+
+int rtc_read8(struct udevice *dev, unsigned int reg)
+{
+	struct rtc_ops *ops = rtc_get_ops(dev);
+
+	assert(ops);
+	if (ops->read8)
+		return ops->read8(dev, reg);
+	if (ops->read) {
+		u8 buf[1];
+		int ret = ops->read(dev, reg, buf, 1);
+
+		if (ret < 0)
+			return ret;
+		return buf[0];
+	}
+	return -ENOSYS;
+}
+
+int rtc_write8(struct udevice *dev, unsigned int reg, int val)
+{
+	struct rtc_ops *ops = rtc_get_ops(dev);
+
+	assert(ops);
+	if (ops->write8)
+		return ops->write8(dev, reg, val);
+	if (ops->write) {
+		u8 buf[1] = { val };
+
+		return ops->write(dev, reg, buf, 1);
+	}
+	return -ENOSYS;
+}
+
+int rtc_read16(struct udevice *dev, unsigned int reg, u16 *valuep)
+{
+	u16 value = 0;
+	int ret;
+	int i;
+
+	for (i = 0; i < sizeof(value); i++) {
+		ret = rtc_read8(dev, reg + i);
+		if (ret < 0)
+			return ret;
+		value |= ret << (i << 3);
+	}
+
+	*valuep = value;
+	return 0;
+}
+
+int rtc_write16(struct udevice *dev, unsigned int reg, u16 value)
+{
+	int i, ret;
+
+	for (i = 0; i < sizeof(value); i++) {
+		ret = rtc_write8(dev, reg + i, (value >> (i << 3)) & 0xff);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+int rtc_read32(struct udevice *dev, unsigned int reg, u32 *valuep)
+{
+	u32 value = 0;
+	int ret;
+	int i;
+
+	for (i = 0; i < sizeof(value); i++) {
+		ret = rtc_read8(dev, reg + i);
+		if (ret < 0)
+			return ret;
+		value |= ret << (i << 3);
+	}
+
+	*valuep = value;
+	return 0;
+}
+
+int rtc_write32(struct udevice *dev, unsigned int reg, u32 value)
+{
+	int i, ret;
+
+	for (i = 0; i < sizeof(value); i++) {
+		ret = rtc_write8(dev, reg + i, (value >> (i << 3)) & 0xff);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+UCLASS_DRIVER(rtc) = {
+	.name		= "rtc",
+	.id		= UCLASS_RTC,
+#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+	.post_bind	= dm_scan_fdt_dev,
+#endif
+};