diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/uartlite.c | 103 |
1 files changed, 24 insertions, 79 deletions
diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c index d2fce86..8af1ed8 100644 --- a/drivers/tty/serial/uartlite.c +++ b/drivers/tty/serial/uartlite.c @@ -19,22 +19,11 @@ #include <linux/interrupt.h> #include <linux/init.h> #include <asm/io.h> -#if defined(CONFIG_OF) && (defined(CONFIG_PPC32) || defined(CONFIG_MICROBLAZE)) #include <linux/of.h> #include <linux/of_address.h> #include <linux/of_device.h> #include <linux/of_platform.h> -/* Match table for of_platform binding */ -static struct of_device_id ulite_of_match[] __devinitdata = { - { .compatible = "xlnx,opb-uartlite-1.00.b", }, - { .compatible = "xlnx,xps-uartlite-1.00.a", }, - {} -}; -MODULE_DEVICE_TABLE(of, ulite_of_match); - -#endif - #define ULITE_NAME "ttyUL" #define ULITE_MAJOR 204 #define ULITE_MINOR 187 @@ -571,9 +560,29 @@ static int __devexit ulite_release(struct device *dev) * Platform bus binding */ +#if defined(CONFIG_OF) +/* Match table for of_platform binding */ +static struct of_device_id ulite_of_match[] __devinitdata = { + { .compatible = "xlnx,opb-uartlite-1.00.b", }, + { .compatible = "xlnx,xps-uartlite-1.00.a", }, + {} +}; +MODULE_DEVICE_TABLE(of, ulite_of_match); +#else /* CONFIG_OF */ +#define ulite_of_match NULL +#endif /* CONFIG_OF */ + static int __devinit ulite_probe(struct platform_device *pdev) { struct resource *res, *res2; + int id = pdev->id; +#ifdef CONFIG_OF + const __be32 *prop; + + prop = of_get_property(pdev->dev.of_node, "port-number", NULL); + if (prop) + id = be32_to_cpup(prop); +#endif res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) @@ -583,7 +592,7 @@ static int __devinit ulite_probe(struct platform_device *pdev) if (!res2) return -ENODEV; - return ulite_assign(&pdev->dev, pdev->id, res->start, res2->start); + return ulite_assign(&pdev->dev, id, res->start, res2->start); } static int __devexit ulite_remove(struct platform_device *pdev) @@ -595,72 +604,15 @@ static int __devexit ulite_remove(struct platform_device *pdev) MODULE_ALIAS("platform:uartlite"); static struct platform_driver ulite_platform_driver = { - .probe = ulite_probe, - .remove = __devexit_p(ulite_remove), - .driver = { - .owner = THIS_MODULE, - .name = "uartlite", - }, -}; - -/* --------------------------------------------------------------------- - * OF bus bindings - */ -#if defined(CONFIG_OF) && (defined(CONFIG_PPC32) || defined(CONFIG_MICROBLAZE)) -static int __devinit -ulite_of_probe(struct platform_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", __func__, op, match); - - rc = of_address_to_resource(op->dev.of_node, 0, &res); - if (rc) { - dev_err(&op->dev, "invalid address\n"); - return rc; - } - - irq = irq_of_parse_and_map(op->dev.of_node, 0); - - id = of_get_property(op->dev.of_node, "port-number", NULL); - - return ulite_assign(&op->dev, id ? *id : -1, res.start, irq); -} - -static int __devexit ulite_of_remove(struct platform_device *op) -{ - return ulite_release(&op->dev); -} - -static struct of_platform_driver ulite_of_driver = { - .probe = ulite_of_probe, - .remove = __devexit_p(ulite_of_remove), + .probe = ulite_probe, + .remove = __devexit_p(ulite_remove), .driver = { - .name = "uartlite", .owner = THIS_MODULE, + .name = "uartlite", .of_match_table = ulite_of_match, }, }; -/* 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_PPC32 || CONFIG_MICROBLAZE) */ -/* Appropriate config 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 && (CONFIG_PPC32 || CONFIG_MICROBLAZE) */ - /* --------------------------------------------------------------------- * Module setup/teardown */ @@ -674,10 +626,6 @@ int __init ulite_init(void) if (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) @@ -686,8 +634,6 @@ int __init ulite_init(void) 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); @@ -697,7 +643,6 @@ err_uart: void __exit ulite_exit(void) { platform_driver_unregister(&ulite_platform_driver); - ulite_of_unregister(); uart_unregister_driver(&ulite_uart_driver); } |
