[ARM] 4753/1: [AT91] Use DMA_BIT_MASK

Replace hard-coded DMA mask (0xffffffff) with DMA_BIT_MASK(32) as
defined in dma-mapping.h.
Set "dma_mask" field for the UART platform_devices.

Signed-off-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 35 insertions, 19 deletions

diff --git a/arch/arm/mach-at91/at91rm9200_devices.c b/arch/arm/mach-at91/at91rm9200_devices.c
index 9296833f91cc..a601c7c1670e 100644
--- a/arch/arm/mach-at91/at91rm9200_devices.c
+++ b/arch/arm/mach-at91/at91rm9200_devices.c
@@ -13,6 +13,7 @@
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 
+#include <linux/dma-mapping.h>
 #include <linux/platform_device.h>
 #include <linux/i2c-gpio.h>
 
@@ -29,7 +30,7 @@
  * -------------------------------------------------------------------- */
 
 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
-static u64 ohci_dmamask = 0xffffffffUL;
+static u64 ohci_dmamask = DMA_BIT_MASK(32);
 static struct at91_usbh_data usbh_data;
 
 static struct resource usbh_resources[] = {
@@ -50,7 +51,7 @@ static struct platform_device at91rm9200_usbh_device = {
         .id             = -1,
         .dev            = {
                                 .dma_mask               = &ohci_dmamask,
-                                .coherent_dma_mask      = 0xffffffff,
+                                .coherent_dma_mask      = DMA_BIT_MASK(32),
                                 .platform_data          = &usbh_data,
         },
         .resource       = usbh_resources,
@@ -125,7 +126,7 @@ void __init at91_add_device_udc(struct at91_udc_data *data) {}
  * -------------------------------------------------------------------- */
 
 #if defined(CONFIG_ARM_AT91_ETHER) || defined(CONFIG_ARM_AT91_ETHER_MODULE)
-static u64 eth_dmamask = 0xffffffffUL;
+static u64 eth_dmamask = DMA_BIT_MASK(32);
 static struct at91_eth_data eth_data;
 
 static struct resource eth_resources[] = {
@@ -146,7 +147,7 @@ static struct platform_device at91rm9200_eth_device = {
         .id             = -1,
         .dev            = {
                                 .dma_mask               = &eth_dmamask,
-                                .coherent_dma_mask      = 0xffffffff,
+                                .coherent_dma_mask      = DMA_BIT_MASK(32),
                                 .platform_data          = &eth_data,
         },
         .resource       = eth_resources,
@@ -285,7 +286,7 @@ void __init at91_add_device_cf(struct at91_cf_data *data) {}
  * -------------------------------------------------------------------- */
 
 #if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
-static u64 mmc_dmamask = 0xffffffffUL;
+static u64 mmc_dmamask = DMA_BIT_MASK(32);
 static struct at91_mmc_data mmc_data;
 
 static struct resource mmc_resources[] = {
@@ -306,7 +307,7 @@ static struct platform_device at91rm9200_mmc_device = {
         .id             = -1,
         .dev            = {
                                 .dma_mask               = &mmc_dmamask,
-                                .coherent_dma_mask      = 0xffffffff,
+                                .coherent_dma_mask      = DMA_BIT_MASK(32),
                                 .platform_data          = &mmc_data,
         },
         .resource       = mmc_resources,
@@ -513,7 +514,7 @@ void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
  * -------------------------------------------------------------------- */
 
 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
-static u64 spi_dmamask = 0xffffffffUL;
+static u64 spi_dmamask = DMA_BIT_MASK(32);
 
 static struct resource spi_resources[] = {
         [0] = {
@@ -533,7 +534,7 @@ static struct platform_device at91rm9200_spi_device = {
         .id             = 0,
         .dev            = {
                                 .dma_mask               = &spi_dmamask,
-                                .coherent_dma_mask      = 0xffffffff,
+                                .coherent_dma_mask      = DMA_BIT_MASK(32),
         },
         .resource       = spi_resources,
         .num_resources  = ARRAY_SIZE(spi_resources),
@@ -658,12 +659,15 @@ static struct atmel_uart_data dbgu_data = {
         .regs           = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
 };
 
+static u64 dbgu_dmamask = DMA_BIT_MASK(32);
+
 static struct platform_device at91rm9200_dbgu_device = {
         .name           = "atmel_usart",
         .id             = 0,
         .dev            = {
-                                .platform_data  = &dbgu_data,
-                                .coherent_dma_mask = 0xffffffff,
+                                .dma_mask               = &dbgu_dmamask,
+                                .coherent_dma_mask      = DMA_BIT_MASK(32),
+                                .platform_data          = &dbgu_data,
         },
         .resource       = dbgu_resources,
         .num_resources  = ARRAY_SIZE(dbgu_resources),
@@ -693,12 +697,15 @@ static struct atmel_uart_data uart0_data = {
         .use_dma_rx     = 1,
 };
 
+static u64 uart0_dmamask = DMA_BIT_MASK(32);
+
 static struct platform_device at91rm9200_uart0_device = {
         .name           = "atmel_usart",
         .id             = 1,
         .dev            = {
-                                .platform_data  = &uart0_data,
-                                .coherent_dma_mask = 0xffffffff,
+                                .dma_mask               = &uart0_dmamask,
+                                .coherent_dma_mask      = DMA_BIT_MASK(32),
+                                .platform_data          = &uart0_data,
         },
         .resource       = uart0_resources,
         .num_resources  = ARRAY_SIZE(uart0_resources),
@@ -735,12 +742,15 @@ static struct atmel_uart_data uart1_data = {
         .use_dma_rx     = 1,
 };
 
+static u64 uart1_dmamask = DMA_BIT_MASK(32);
+
 static struct platform_device at91rm9200_uart1_device = {
         .name           = "atmel_usart",
         .id             = 2,
         .dev            = {
-                                .platform_data  = &uart1_data,
-                                .coherent_dma_mask = 0xffffffff,
+                                .dma_mask               = &uart1_dmamask,
+                                .coherent_dma_mask      = DMA_BIT_MASK(32),
+                                .platform_data          = &uart1_data,
         },
         .resource       = uart1_resources,
         .num_resources  = ARRAY_SIZE(uart1_resources),
@@ -776,12 +786,15 @@ static struct atmel_uart_data uart2_data = {
         .use_dma_rx     = 1,
 };
 
+static u64 uart2_dmamask = DMA_BIT_MASK(32);
+
 static struct platform_device at91rm9200_uart2_device = {
         .name           = "atmel_usart",
         .id             = 3,
         .dev            = {
-                                .platform_data  = &uart2_data,
-                                .coherent_dma_mask = 0xffffffff,
+                                .dma_mask               = &uart2_dmamask,
+                                .coherent_dma_mask      = DMA_BIT_MASK(32),
+                                .platform_data          = &uart2_data,
         },
         .resource       = uart2_resources,
         .num_resources  = ARRAY_SIZE(uart2_resources),
@@ -811,12 +824,15 @@ static struct atmel_uart_data uart3_data = {
         .use_dma_rx     = 1,
 };
 
+static u64 uart3_dmamask = DMA_BIT_MASK(32);
+
 static struct platform_device at91rm9200_uart3_device = {
         .name           = "atmel_usart",
         .id             = 4,
         .dev            = {
-                                .platform_data  = &uart3_data,
-                                .coherent_dma_mask = 0xffffffff,
+                                .dma_mask               = &uart3_dmamask,
+                                .coherent_dma_mask      = DMA_BIT_MASK(32),
+                                .platform_data          = &uart3_data,
         },
         .resource       = uart3_resources,
         .num_resources  = ARRAY_SIZE(uart3_resources),
@@ -828,7 +844,7 @@ static inline void configure_usart3_pins(void)
         at91_set_B_periph(AT91_PIN_PA6, 0);             /* RXD3 */
 }
 
-struct platform_device *at91_uarts[ATMEL_MAX_UART];     /* the UARTs to use */
+static struct platform_device *at91_uarts[ATMEL_MAX_UART];      /* the UARTs to use */
 struct platform_device *atmel_default_console_device;   /* the serial console device */
 
 void __init at91_init_serial(struct at91_uart_config *config)