diff options
Diffstat (limited to 'target/linux/at91-2.6/patches/008-fdl-serial.patch')
| -rw-r--r-- | target/linux/at91-2.6/patches/008-fdl-serial.patch | 95 |
1 files changed, 94 insertions, 1 deletions
diff --git a/target/linux/at91-2.6/patches/008-fdl-serial.patch b/target/linux/at91-2.6/patches/008-fdl-serial.patch index 3796915972..cac6744d4c 100644 --- a/target/linux/at91-2.6/patches/008-fdl-serial.patch +++ b/target/linux/at91-2.6/patches/008-fdl-serial.patch @@ -1,5 +1,5 @@ --- linux-2.6.19.2.old/drivers/serial/atmel_serial.c 2007-05-01 13:08:03.000000000 +0200 -+++ linux-2.6.19.2/drivers/serial/atmel_serial.c 2007-05-09 10:21:45.000000000 +0200 ++++ linux-2.6.19.2/drivers/serial/atmel_serial.c 2007-05-09 17:13:34.000000000 +0200 @@ -173,6 +173,34 @@ at91_set_gpio_value(AT91_PIN_PA21, 0); else @@ -69,3 +69,96 @@ return ret; } +@@ -510,6 +554,34 @@ + } + + /* ++ * 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; ++} ++ ++/* + * Interrupt handler + */ + static irqreturn_t atmel_interrupt(int irq, void *dev_id) +@@ -586,6 +658,24 @@ + 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) + */ +@@ -602,6 +692,10 @@ + 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, pdc->buf, PDC_BUFFER_SIZE, DMA_FROM_DEVICE); +@@ -635,6 +729,10 @@ + 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; + } + } +@@ -694,6 +792,10 @@ + * 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 |