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author | 2007-10-02 12:16:04 +1000 | |
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committer | 2007-10-03 07:23:15 -0500 | |
commit | 852e1ea748e83eba7fdb1cc198f271837b16137b (patch) | |
tree | f3a2b65e469c76acf3a7d2adb5c1ac69e446a060 /drivers/serial | |
parent | [POWERPC] Uartlite: Comment block tidy (diff) | |
download | linux-852e1ea748e83eba7fdb1cc198f271837b16137b.tar.gz linux-852e1ea748e83eba7fdb1cc198f271837b16137b.tar.bz2 linux-852e1ea748e83eba7fdb1cc198f271837b16137b.zip |
[POWERPC] Uartlite: Add of-platform-bus binding
Add of_platform bus binding so this driver can be used with arch/powerpc
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Diffstat (limited to 'drivers/serial')
-rw-r--r-- | drivers/serial/uartlite.c | 96 |
1 files changed, 92 insertions, 4 deletions
diff --git a/drivers/serial/uartlite.c b/drivers/serial/uartlite.c index ed13b9fac1af..0904c2a62fc4 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 <jacmet@sunsite.dk> + * Copyright (C) 2006 Peter Korsgaard <jacmet@sunsite.dk> + * 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 __devexit 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 = __devexit_p(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 __exit 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 __exit ulite_of_unregister(void) { } +#endif /* CONFIG_OF */ + +/* --------------------------------------------------------------------- * Module setup/teardown */ @@ -549,20 +622,35 @@ int __init ulite_init(void) { int ret; + pr_debug("uartlite: calling uart_register_driver()\n"); ret = uart_register_driver(&ulite_uart_driver); if (ret) - return ret; + goto err_uart; + + ret = ulite_of_register(); + if (ret) + goto err_of; + pr_debug("uartlite: calling platform_driver_register()\n"); ret = platform_driver_register(&ulite_platform_driver); if (ret) - uart_unregister_driver(&ulite_uart_driver); + 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); } |