[PATCH] atmel_serial: Pass fixed register mappings through platform_data

[linux-2.6-block.git] / arch / avr32 / mach-at32ap / at32ap7000.c

diff --git a/arch/avr32/mach-at32ap/at32ap7000.c b/arch/avr32/mach-at32ap/at32ap7000.c
index 05d1296bd7b23383a877e33cdc7a0ff87b0ee98c..3dd3058750878cf0fedc2895bc0b1442a49b2438 100644 (file)
--- a/arch/avr32/mach-at32ap/at32ap7000.c
+++ b/arch/avr32/mach-at32ap/at32ap7000.c
@@ -523,32 +523,48 @@ void __init at32_add_system_devices(void)
  *  USART
  * -------------------------------------------------------------------- */
 
+static struct atmel_uart_data atmel_usart0_data = {
+       .use_dma_tx     = 1,
+       .use_dma_rx     = 1,
+};
 static struct resource atmel_usart0_resource[] = {
        PBMEM(0xffe00c00),
        IRQ(7),
 };
-DEFINE_DEV(atmel_usart, 0);
+DEFINE_DEV_DATA(atmel_usart, 0);
 DEV_CLK(usart, atmel_usart0, pba, 4);
 
+static struct atmel_uart_data atmel_usart1_data = {
+       .use_dma_tx     = 1,
+       .use_dma_rx     = 1,
+};
 static struct resource atmel_usart1_resource[] = {
        PBMEM(0xffe01000),
        IRQ(7),
 };
-DEFINE_DEV(atmel_usart, 1);
+DEFINE_DEV_DATA(atmel_usart, 1);
 DEV_CLK(usart, atmel_usart1, pba, 4);
 
+static struct atmel_uart_data atmel_usart2_data = {
+       .use_dma_tx     = 1,
+       .use_dma_rx     = 1,
+};
 static struct resource atmel_usart2_resource[] = {
        PBMEM(0xffe01400),
        IRQ(8),
 };
-DEFINE_DEV(atmel_usart, 2);
+DEFINE_DEV_DATA(atmel_usart, 2);
 DEV_CLK(usart, atmel_usart2, pba, 5);
 
+static struct atmel_uart_data atmel_usart3_data = {
+       .use_dma_tx     = 1,
+       .use_dma_rx     = 1,
+};
 static struct resource atmel_usart3_resource[] = {
        PBMEM(0xffe01800),
        IRQ(9),
 };
-DEFINE_DEV(atmel_usart, 3);
+DEFINE_DEV_DATA(atmel_usart, 3);
 DEV_CLK(usart, atmel_usart3, pba, 6);
 
 static inline void configure_usart0_pins(void)
@@ -597,8 +613,13 @@ static struct platform_device *setup_usart(unsigned int id)
                configure_usart3_pins();
                break;
        default:
-               pdev = NULL;
-               break;
+               return NULL;
+       }
+
+       if (PXSEG(pdev->resource[0].start) == P4SEG) {
+               /* Addresses in the P4 segment are permanently mapped 1:1 */
+               struct atmel_uart_data *data = pdev->dev.platform_data;
+               data->regs = (void __iomem *)pdev->resource[0].start;
        }
 
        return pdev;