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Index: linux-2.6.21.7/drivers/serial/atmel_serial.c
===================================================================
--- linux-2.6.21.7.orig/drivers/serial/atmel_serial.c
+++ linux-2.6.21.7/drivers/serial/atmel_serial.c
@@ -174,7 +174,35 @@ static void atmel_set_mctrl(struct uart_
at91_set_gpio_value(AT91_PIN_PA21, 0);
else
at91_set_gpio_value(AT91_PIN_PA21, 1);
+
+ /*
+ * FDL VersaLink adds GPIOS to provide full modem control on
+ * USART 0 - Drive DTR and RI pins manually
+ */
+ if (mctrl & TIOCM_DTR)
+ at91_set_gpio_value(AT91_PIN_PB6, 0);
+ else
+ at91_set_gpio_value(AT91_PIN_PB6, 1);
+ if (mctrl & TIOCM_RI)
+ at91_set_gpio_value(AT91_PIN_PB7, 0);
+ else
+ at91_set_gpio_value(AT91_PIN_PB7, 1);
}
+
+ /*
+ * FDL VersaLink adds GPIOS to provide full modem control on
+ * USART 3 - Drive DTR and RI pins manually
+ */
+ if (port->mapbase == AT91RM9200_BASE_US3) {
+ if (mctrl & TIOCM_DTR)
+ at91_set_gpio_value(AT91_PIN_PB29, 0);
+ else
+ at91_set_gpio_value(AT91_PIN_PB29, 1);
+ if (mctrl & TIOCM_RI)
+ at91_set_gpio_value(AT91_PIN_PB2, 0);
+ else
+ at91_set_gpio_value(AT91_PIN_PB2, 1);
+ }
}
#endif
@@ -211,8 +239,10 @@ static u_int atmel_get_mctrl(struct uart
/*
* The control signals are active low.
*/
- if (!(status & ATMEL_US_DCD))
- ret |= TIOCM_CD;
+
+ if (!(port->mapbase == AT91RM9200_BASE_US0 || port->mapbase == AT91RM9200_BASE_US3))
+ if (!(status & ATMEL_US_DCD))
+ ret |= TIOCM_CD;
if (!(status & ATMEL_US_CTS))
ret |= TIOCM_CTS;
if (!(status & ATMEL_US_DSR))
@@ -220,6 +250,16 @@ static u_int atmel_get_mctrl(struct uart
if (!(status & ATMEL_US_RI))
ret |= TIOCM_RI;
+ /*
+ * Read the GPIO's for the FDL VersaLink special case
+ */
+ if (port->mapbase == AT91RM9200_BASE_US0)
+ if (!(at91_get_gpio_value(AT91_PIN_PA19)))
+ ret |= TIOCM_CD;
+ if (port->mapbase == AT91RM9200_BASE_US3)
+ if (!(at91_get_gpio_value(AT91_PIN_PA24)))
+ ret |= TIOCM_CD;
+
return ret;
}
@@ -511,6 +551,34 @@ static void atmel_tx_chars(struct uart_p
}
/*
+ * USART0 DCD Interrupt handler
+ */
+
+static irqreturn_t atmel_u0_DCD_interrupt(int irq, void *dev_id)
+{
+ struct uart_port *port = dev_id;
+ int status = at91_get_gpio_value(irq);
+
+ uart_handle_dcd_change(port, !(status));
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * USART3 DCD Interrupt handler
+ */
+
+static irqreturn_t atmel_u3_DCD_interrupt(int irq, void *dev_id)
+{
+ struct uart_port *port = dev_id;
+ int status = at91_get_gpio_value(irq);
+
+ uart_handle_dcd_change(port, !(status));
+
+ return IRQ_HANDLED;
+}
+
+/*
* Interrupt handler
*/
static irqreturn_t atmel_interrupt(int irq, void *dev_id)
@@ -587,6 +655,23 @@ static int atmel_startup(struct uart_por
return retval;
}
+ if (port->mapbase == AT91RM9200_BASE_US0) {
+ retval = request_irq(AT91_PIN_PA19, atmel_u0_DCD_interrupt, 0, "atmel_serial", port);
+ if (retval) {
+ printk("atmel_serial: atmel_startup - Can't get u0DCD irq\n");
+ free_irq(port->irq, port);
+ return retval;
+ }
+ }
+ if (port->mapbase == AT91RM9200_BASE_US3) {
+ retval = request_irq(AT91_PIN_PA24, atmel_u3_DCD_interrupt, 0, "atmel_serial", port);
+ if (retval) {
+ printk("atmel_serial: atmel_startup - Can't get u3DCD irq\n");
+ free_irq(port->irq, port);
+ return retval;
+ }
+ }
+
/*
* Initialize DMA (if necessary)
*/
@@ -603,6 +688,10 @@ static int atmel_startup(struct uart_por
kfree(atmel_port->pdc_rx[0].buf);
}
free_irq(port->irq, port);
+ if (port->mapbase == AT91RM9200_BASE_US0)
+ free_irq(AT91_PIN_PA19, port);
+ if (port->mapbase == AT91RM9200_BASE_US3)
+ free_irq(AT91_PIN_PA24, port);
return -ENOMEM;
}
pdc->dma_addr = dma_map_single(port->dev, pdc->buf, PDC_BUFFER_SIZE, DMA_FROM_DEVICE);
@@ -636,6 +725,10 @@ static int atmel_startup(struct uart_por
retval = atmel_open_hook(port);
if (retval) {
free_irq(port->irq, port);
+ if (port->mapbase == AT91RM9200_BASE_US0)
+ free_irq(AT91_PIN_PA19, port);
+ if (port->mapbase == AT91RM9200_BASE_US3)
+ free_irq(AT91_PIN_PA24, port);
return retval;
}
}
@@ -701,6 +794,10 @@ static void atmel_shutdown(struct uart_p
* Free the interrupt
*/
free_irq(port->irq, port);
+ if (port->mapbase == AT91RM9200_BASE_US0)
+ free_irq(AT91_PIN_PA19, port);
+ if (port->mapbase == AT91RM9200_BASE_US3)
+ free_irq(AT91_PIN_PA24, port);
/*
* If there is a specific "close" function (to unregister
|
