drivers: Add SPMI bus uclass

[oweals/u-boot.git] / drivers / spmi / spmi-uclass.c

diff --git a/drivers/spmi/spmi-uclass.c b/drivers/spmi/spmi-uclass.c
new file mode 100644 (file)
index 0000000..4ddd51b
--- /dev/null
+++ b/drivers/spmi/spmi-uclass.c
@@ -0,0 +1,48 @@
+/*
+ * SPMI bus uclass driver
+ *
+ * (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <dm/root.h>
+#include <spmi/spmi.h>
+#include <linux/ctype.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int spmi_reg_read(struct udevice *dev, int usid, int pid, int reg)
+{
+       const struct dm_spmi_ops *ops = dev_get_driver_ops(dev);
+
+       if (!ops || !ops->read)
+               return -ENOSYS;
+
+       return ops->read(dev, usid, pid, reg);
+}
+
+int spmi_reg_write(struct udevice *dev, int usid, int pid, int reg,
+                  uint8_t value)
+{
+       const struct dm_spmi_ops *ops = dev_get_driver_ops(dev);
+
+       if (!ops || !ops->write)
+               return -ENOSYS;
+
+       return ops->write(dev, usid, pid, reg, value);
+}
+
+static int spmi_post_bind(struct udevice *dev)
+{
+       return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset, false);
+}
+
+UCLASS_DRIVER(spmi) = {
+       .id             = UCLASS_SPMI,
+       .name           = "spmi",
+       .post_bind      = spmi_post_bind,
+};