X-Git-Url: http://git.rohieb.name/openwrt.git/blobdiff_plain/59d8d6f96086b5977dd4e02f70277d79b21cccb9..cd7b6d1acc0c3a450671a65493958abe6d84c4db:/target/linux/at91-2.6/patches/008-fdl-serial.patch

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 2260ffb6f..42589197b 100644
--- a/target/linux/at91-2.6/patches/008-fdl-serial.patch
+++ b/target/linux/at91-2.6/patches/008-fdl-serial.patch
@@ -1,71 +1,160 @@
---- 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
-@@ -173,6 +173,34 @@
+--- linux-2.6.21.1.orig/drivers/serial/atmel_serial.c	2007-05-28 12:22:29.000000000 +0200
++++ linux-2.6.21.1/drivers/serial/atmel_serial.c	2007-05-28 16:39:09.000000000 +0200
+@@ -174,7 +174,35 @@
  				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_PA19, 0);
-+			else
-+				at91_set_gpio_value(AT91_PIN_PA19, 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_PA24, 0);
-+			else
-+				at91_set_gpio_value(AT91_PIN_PA24, 1);
-+			if (mctrl & TIOCM_RI)
-+				at91_set_gpio_value(AT91_PIN_PB2, 0);
-+			else
-+				at91_set_gpio_value(AT91_PIN_PB2, 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
-@@ -210,8 +238,14 @@
+ 
+@@ -211,8 +239,10 @@
  	/*
  	 * The control signals are active low.
  	 */
 -	if (!(status & ATMEL_US_DCD))
 -		ret |= TIOCM_CD;
 +
-+	/* 
-+	 * Ignore DCD reister for USARTS 0 and 3 as FDL Versalink uses
-+	 * GPIO's for these signals
-+	 */
-+	if (!(port->mapbase == AT91RM9200_BASE_US0 || port->mapbase == AT91RM9200_BASE_US3))
++  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))
-@@ -219,6 +253,16 @@
+@@ -220,6 +250,16 @@
  	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_PB6)))
-+			ret |= TIOCM_CD;
-+	if (port->mapbase == AT91RM9200_BASE_US3)
-+		if (!(at91_get_gpio_value(AT91_PIN_PB29)))
-+			ret |= TIOCM_CD;
++  /*
++   * 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 @@
+ }
+ 
+ /*
++ * 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 @@
+ 		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 @@
+ 					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 @@
+ 		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 @@
+ 	 * 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