/* PDC registers */
#define UART_PUT_PTCR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_PTCR)
-#define UART_GET_TCR(port) __raw_readl((port)->membase + ATMEL_PDC_TCR)
#define UART_GET_PTSR(port) __raw_readl((port)->membase + ATMEL_PDC_PTSR)
#define UART_PUT_RPR(port,v) __raw_writel(v, (port)->membase + ATMEL_PDC_RPR)
* uart_start(), which takes the lock.
*/
spin_unlock(&port->lock);
- tty_flip_buffer_push(port->info->tty);
+ tty_flip_buffer_push(port->info->port.tty);
spin_lock(&port->lock);
}
static void atmel_rx_from_dma(struct uart_port *port)
{
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
- struct tty_struct *tty = port->info->tty;
+ struct tty_struct *tty = port->info->port.tty;
struct atmel_dma_buffer *pdc;
int rx_idx = atmel_port->pdc_rx_idx;
unsigned int head;
static int atmel_startup(struct uart_port *port)
{
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
- struct tty_struct *tty = port->info->tty;
+ struct tty_struct *tty = port->info->port.tty;
int retval;
/*
atmel_close_hook(port);
}
+/*
+ * Flush any TX data submitted for DMA. Called when the TX circular
+ * buffer is reset.
+ */
+static void atmel_flush_buffer(struct uart_port *port)
+{
+ struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
+
+ if (atmel_use_dma_tx(port)) {
+ UART_PUT_TCR(port, 0);
+ atmel_port->pdc_tx.ofs = 0;
+ }
+}
+
/*
* Power / Clock management.
*/
.break_ctl = atmel_break_ctl,
.startup = atmel_startup,
.shutdown = atmel_shutdown,
+ .flush_buffer = atmel_flush_buffer,
.set_termios = atmel_set_termios,
.type = atmel_type,
.release_port = atmel_release_port,
* If the baud rate generator isn't running, the port wasn't
* initialized by the boot loader.
*/
- quot = UART_GET_BRGR(port);
+ quot = UART_GET_BRGR(port) & ATMEL_US_CD;
if (!quot)
return;
};
#ifdef CONFIG_PM
+static bool atmel_serial_clk_will_stop(void)
+{
+#ifdef CONFIG_ARCH_AT91
+ return at91_suspend_entering_slow_clock();
+#else
+ return false;
+#endif
+}
+
static int atmel_serial_suspend(struct platform_device *pdev,
pm_message_t state)
{
struct uart_port *port = platform_get_drvdata(pdev);
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
+ if (atmel_is_console_port(port) && console_suspend_enabled) {
+ /* Drain the TX shifter */
+ while (!(UART_GET_CSR(port) & ATMEL_US_TXEMPTY))
+ cpu_relax();
+ }
+
if (device_may_wakeup(&pdev->dev)
- && !at91_suspend_entering_slow_clock())
+ && !atmel_serial_clk_will_stop())
enable_irq_wake(port->irq);
else {
uart_suspend_port(&atmel_uart, port);