static int ulite_receive(struct uart_port *port, int stat)
{
- struct tty_struct *tty = port->info->tty;
+ struct tty_struct *tty = port->state->port.tty;
unsigned char ch = 0;
char flag = TTY_NORMAL;
static int ulite_transmit(struct uart_port *port, int stat)
{
- struct circ_buf *xmit = &port->info->xmit;
+ struct circ_buf *xmit = &port->state->xmit;
if (stat & ULITE_STATUS_TXFULL)
return 0;
static irqreturn_t ulite_isr(int irq, void *dev_id)
{
- struct uart_port *port = (struct uart_port *)dev_id;
- int busy;
+ struct uart_port *port = dev_id;
+ int busy, n = 0;
do {
int stat = readb(port->membase + ULITE_STATUS);
busy = ulite_receive(port, stat);
busy |= ulite_transmit(port, stat);
+ n++;
} while (busy);
- tty_flip_buffer_push(port->info->tty);
-
- return IRQ_HANDLED;
+ /* work done? */
+ if (n > 1) {
+ tty_flip_buffer_push(port->state->port.tty);
+ return IRQ_HANDLED;
+ } else {
+ return IRQ_NONE;
+ }
}
static unsigned int ulite_tx_empty(struct uart_port *port)
int ret;
ret = request_irq(port->irq, ulite_isr,
- IRQF_DISABLED | IRQF_SAMPLE_RANDOM, "uartlite", port);
+ IRQF_SHARED | IRQF_SAMPLE_RANDOM, "uartlite", port);
if (ret)
return ret;
static int ulite_request_port(struct uart_port *port)
{
- pr_debug("ulite console: port=%p; port->mapbase=%x\n",
- port, port->mapbase);
+ pr_debug("ulite console: port=%p; port->mapbase=%llx\n",
+ port, (unsigned long long) port->mapbase);
if (!request_mem_region(port->mapbase, ULITE_REGION, "uartlite")) {
dev_err(port->dev, "Memory region busy\n");
return ulite_release(&pdev->dev);
}
+/* work with hotplug and coldplug */
+MODULE_ALIAS("platform:uartlite");
+
static struct platform_driver ulite_platform_driver = {
.probe = ulite_probe,
.remove = __devexit_p(ulite_remove),
const unsigned int *id;
int irq, rc;
- dev_dbg(&op->dev, "%s(%p, %p)\n", __FUNCTION__, op, match);
+ dev_dbg(&op->dev, "%s(%p, %p)\n", __func__, op, match);
rc = of_address_to_resource(op->node, 0, &res);
if (rc) {