powerpc: Add serial driver for driver model

This uses the ns16550 driver but sets up the clock at run-time. It does
not seem to be available in the device tree.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 4cc00cd2f84ef2c8cfff3e5c2c0a022d870ceaea..63b0cbf5da81a4dc241e31f62336eec5a9169179 100644 (file)
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -8,6 +8,7 @@
 ifdef CONFIG_DM_SERIAL
 obj-y += serial-uclass.o
 obj-$(CONFIG_PL01X_SERIAL) += serial_pl01x.o
+obj-$(CONFIG_PPC) += serial_ppc.o
 else
 obj-y += serial.o
 obj-$(CONFIG_PL010_SERIAL) += serial_pl01x.o

diff --git a/drivers/serial/serial_ppc.c b/drivers/serial/serial_ppc.c
new file mode 100644 (file)
index 0000000..47141c6
--- /dev/null
+++ b/drivers/serial/serial_ppc.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2014 Google, Inc
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <ns16550.h>
+#include <serial.h>
+
+static const struct udevice_id ppc_serial_ids[] = {
+       { .compatible = "ns16550" },
+       { }
+};
+
+static int ppc_serial_ofdata_to_platdata(struct udevice *dev)
+{
+       struct ns16550_platdata *plat = dev_get_platdata(dev);
+       int ret;
+
+       ret = ns16550_serial_ofdata_to_platdata(dev);
+       if (ret)
+               return ret;
+       plat->clock = get_serial_clock();
+
+       return 0;
+}
+
+U_BOOT_DRIVER(serial_ns16550) = {
+       .name   = "serial_ppc",
+       .id     = UCLASS_SERIAL,
+       .of_match = ppc_serial_ids,
+       .ofdata_to_platdata = ppc_serial_ofdata_to_platdata,
+       .platdata_auto_alloc_size = sizeof(struct ns16550_platdata),
+       .priv_auto_alloc_size = sizeof(struct NS16550),
+       .probe = ns16550_serial_probe,
+       .ops    = &ns16550_serial_ops,
+       .flags  = DM_FLAG_PRE_RELOC,
+};