diff options
Diffstat (limited to 'drivers/serial/uartlite.c')
| -rw-r--r-- | drivers/serial/uartlite.c | 53 |
1 files changed, 15 insertions, 38 deletions
diff --git a/drivers/serial/uartlite.c b/drivers/serial/uartlite.c index bacf68dca01a..4e06ab6bcb6e 100644 --- a/drivers/serial/uartlite.c +++ b/drivers/serial/uartlite.c @@ -17,10 +17,21 @@ #include <linux/tty.h> #include <linux/delay.h> #include <linux/interrupt.h> +#include <linux/init.h> #include <asm/io.h> #if defined(CONFIG_OF) +#include <linux/of.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" @@ -275,6 +286,9 @@ static void ulite_release_port(struct uart_port *port) static int ulite_request_port(struct uart_port *port) { + pr_debug("ulite console: port=%p; port->mapbase=%x\n", + port, port->mapbase); + if (!request_mem_region(port->mapbase, ULITE_REGION, "uartlite")) { dev_err(port->dev, "Memory region busy\n"); return -EBUSY; @@ -375,32 +389,6 @@ static void ulite_console_write(struct console *co, const char *s, spin_unlock_irqrestore(&port->lock, flags); } -#if defined(CONFIG_OF) -static inline void __init ulite_console_of_find_device(int id) -{ - struct device_node *np; - struct resource res; - const unsigned int *of_id; - int rc; - - for_each_compatible_node(np, NULL, "xilinx,uartlite") { - of_id = of_get_property(np, "port-number", NULL); - if ((!of_id) || (*of_id != id)) - continue; - - rc = of_address_to_resource(np, 0, &res); - if (rc) - continue; - - ulite_ports[id].mapbase = res.start; - of_node_put(np); - return; - } -} -#else /* CONFIG_OF */ -static inline void __init ulite_console_of_find_device(int id) { /* do nothing */ } -#endif /* CONFIG_OF */ - static int __init ulite_console_setup(struct console *co, char *options) { struct uart_port *port; @@ -414,11 +402,7 @@ static int __init ulite_console_setup(struct console *co, char *options) port = &ulite_ports[co->index]; - /* Check if it is an OF device */ - if (!port->mapbase) - ulite_console_of_find_device(co->index); - - /* Do we have a device now? */ + /* Has the device been initialized yet? */ if (!port->mapbase) { pr_debug("console on ttyUL%i not present\n", co->index); return -ENODEV; @@ -617,13 +601,6 @@ 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", |