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Diffstat (limited to 'target/linux/at91/patches-2.6.25/008-fdl-serial.patch')
-rw-r--r--target/linux/at91/patches-2.6.25/008-fdl-serial.patch161
1 files changed, 161 insertions, 0 deletions
diff --git a/target/linux/at91/patches-2.6.25/008-fdl-serial.patch b/target/linux/at91/patches-2.6.25/008-fdl-serial.patch
new file mode 100644
index 000000000..3cdbec27f
--- /dev/null
+++ b/target/linux/at91/patches-2.6.25/008-fdl-serial.patch
@@ -0,0 +1,161 @@
+--- linux-2.6.25.10.old/drivers/serial/atmel_serial.c 2008-07-04 14:21:12.000000000 +0200
++++ linux-2.6.25.10/drivers/serial/atmel_serial.c 2008-07-04 14:55:37.000000000 +0200
+@@ -214,6 +214,34 @@
+ 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
+@@ -251,8 +279,10 @@
+ /*
+ * 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))
+@@ -260,6 +290,16 @@
+ 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;
+ }
+
+@@ -453,6 +493,34 @@
+ }
+
+ /*
++ * 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;
++}
++
++/*
+ * receive interrupt handler.
+ */
+ static void
+@@ -815,6 +883,23 @@
+ 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)
+ */
+@@ -834,6 +919,10 @@
+ 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,
+@@ -873,7 +962,11 @@
+ retval = atmel_open_hook(port);
+ if (retval) {
+ free_irq(port->irq, port);
+- return retval;
++ 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;
+ }
+ }
+
+@@ -947,6 +1040,10 @@
+ * 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