From: Grant Likely <[EMAIL PROTECTED]>
Signed-off-by: Grant Likely <[EMAIL PROTECTED]>
---
drivers/serial/uartlite.c | 101 +++++++++++++++++++++++++++++++++++++++++----
1 files changed, 93 insertions(+), 8 deletions(-)
diff --git a/drivers/serial/uartlite.c b/drivers/serial/uartlite.c
index ed13b9f..8f742e0 100644
--- a/drivers/serial/uartlite.c
+++ b/drivers/serial/uartlite.c
@@ -1,7 +1,8 @@
/*
* uartlite.c: Serial driver for Xilinx uartlite serial controller
*
- * Peter Korsgaard <[EMAIL PROTECTED]>
+ * Copyright (C) 2006 Peter Korsgaard <[EMAIL PROTECTED]>
+ * Copyright (C) 2007 Secret Lab Technologies Ltd.
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
@@ -17,6 +18,10 @@
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <asm/io.h>
+#if defined(CONFIG_OF)
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#endif
#define ULITE_NAME "ttyUL"
#define ULITE_MAJOR 204
@@ -382,8 +387,10 @@ static int __init ulite_console_setup(struct console *co,
char *options)
port = &ulite_ports[co->index];
/* not initialized yet? */
- if (!port->membase)
+ if (!port->membase) {
+ pr_debug("console on ttyUL%i not initialized\n", co->index);
return -ENODEV;
+ }
if (options)
uart_parse_options(options, &baud, &parity, &bits, &flow);
@@ -542,6 +549,72 @@ static struct platform_driver ulite_platform_driver = {
};
/* ---------------------------------------------------------------------
+ * OF bus bindings
+ */
+#if defined(CONFIG_OF)
+static int __devinit
+ulite_of_probe(struct of_device *op, const struct of_device_id *match)
+{
+ struct resource res;
+ const unsigned int *id;
+ int irq, rc;
+
+ dev_dbg(&op->dev, "%s(%p, %p)\n", __FUNCTION__, op, match);
+
+ rc = of_address_to_resource(op->node, 0, &res);
+ if (rc) {
+ dev_err(&op->dev, "invalide address\n");
+ return rc;
+ }
+
+ irq = irq_of_parse_and_map(op->node, 0);
+
+ id = of_get_property(op->node, "port-number", NULL);
+
+ return ulite_assign(&op->dev, id ? *id : -1, res.start, irq);
+}
+
+static int ulite_of_remove(struct of_device *op)
+{
+ return ulite_release(&op->dev);
+}
+
+/* Match table for of_platform binding */
+static struct of_device_id __devinit ulite_of_match[] = {
+ { .type = "serial", .compatible = "xilinx,uartlite", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, ulite_of_match);
+
+static struct of_platform_driver ulite_of_driver = {
+ .owner = THIS_MODULE,
+ .name = "uartlite",
+ .match_table = ulite_of_match,
+ .probe = ulite_of_probe,
+ .remove = ulite_of_remove,
+ .driver = {
+ .name = "uartlite",
+ },
+};
+
+/* Registration helpers to keep the number of #ifdefs to a minimum */
+static inline int __init ulite_of_register(void)
+{
+ pr_debug("uartlite: calling of_register_platform_driver()\n");
+ return of_register_platform_driver(&ulite_of_driver);
+}
+
+static inline void __init ulite_of_unregister(void)
+{
+ of_unregister_platform_driver(&ulite_of_driver);
+}
+#else /* CONFIG_OF */
+/* CONFIG_OF not enabled; do nothing helpers */
+static inline int __init ulite_of_register(void) { return 0; }
+static inline void __init ulite_of_unregister(void) { }
+#endif /* CONFIG_OF */
+
+/* ---------------------------------------------------------------------
* Module setup/teardown
*/
@@ -549,20 +622,32 @@ int __init ulite_init(void)
{
int ret;
- ret = uart_register_driver(&ulite_uart_driver);
- if (ret)
- return ret;
+ pr_debug("uartlite: calling uart_register_driver()\n");
+ if ((ret = uart_register_driver(&ulite_uart_driver)) != 0)
+ goto err_uart;
- ret = platform_driver_register(&ulite_platform_driver);
- if (ret)
- uart_unregister_driver(&ulite_uart_driver);
+ if ((ret = ulite_of_register()) != 0)
+ goto err_of;
+ pr_debug("uartlite: calling platform_driver_register()\n");
+ if ((ret = platform_driver_register(&ulite_platform_driver)) != 0)
+ goto err_plat;
+
+ return 0;
+
+err_plat:
+ ulite_of_unregister();
+err_of:
+ uart_unregister_driver(&ulite_uart_driver);
+err_uart:
+ printk(KERN_ERR "registering uartlite driver failed: err=%i", ret);
return ret;
}
void __exit ulite_exit(void)
{
platform_driver_unregister(&ulite_platform_driver);
+ ulite_of_unregister();
uart_unregister_driver(&ulite_uart_driver);
}
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