dm: keystone: serial: Add driver model support

Add driver model support for keystone serial driver.
Signed-off-by: NLokesh Vutla <lokeshvutla@ti.com>
Acked-by: NSimon Glass <sjg@chromium.org>

drivers/serial/Makefile

@@ -25,6 +25,7 @@ obj-$(CONFIG_EFI_APP) += serial_efi.o
 obj-$(CONFIG_LPC32XX_HSUART) += lpc32xx_hsuart.o
 obj-$(CONFIG_MCFUART) += mcfuart.o
 obj-$(CONFIG_OPENCORES_YANU) += opencores_yanu.o
+obj-$(CONFIG_KEYSTONE_SERIAL) += serial_keystone.o
 obj-$(CONFIG_SYS_NS16550) += ns16550.o
 obj-$(CONFIG_S5P) += serial_s5p.o
 obj-$(CONFIG_IMX_SERIAL) += serial_imx.o

drivers/serial/serial_keystone.c

+/*
+ * Copyright (c) 2015 Texas Instruments, <www.ti.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <fdtdec.h>
+#include <ns16550.h>
+#include <serial.h>
+#include <asm/arch/clock.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+static const struct udevice_id keystone_serial_ids[] = {
+	{ .compatible = "ti,keystone-uart" },
+	{ .compatible = "ns16550a" },
+	{ }
+};
+
+static int keystone_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 = CONFIG_SYS_NS16550_CLK;
+	return 0;
+}
+#endif
+
+U_BOOT_DRIVER(serial_keystone_ns16550) = {
+	.name	= "serial_keystone",
+	.id	= UCLASS_SERIAL,
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+	.of_match = of_match_ptr(keystone_serial_ids),
+	.ofdata_to_platdata = of_match_ptr(keystone_serial_ofdata_to_platdata),
+	.platdata_auto_alloc_size = sizeof(struct ns16550_platdata),
+#endif
+	.priv_auto_alloc_size = sizeof(struct NS16550),
+	.probe = ns16550_serial_probe,
+	.ops	= &ns16550_serial_ops,
+	.flags	= DM_FLAG_PRE_RELOC,
+};