[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, 33 insertions, 17 deletions

diff --git a/arch/arm/mach-at91/at91sam9rl_devices.c b/arch/arm/mach-at91/at91sam9rl_devices.c
index 19ca71d3faab..bec8066f9ba1 100644
--- a/arch/arm/mach-at91/at91sam9rl_devices.c
+++ b/arch/arm/mach-at91/at91sam9rl_devices.c
@@ -9,6 +9,7 @@
 #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_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[] = {
@@ -50,7 +51,7 @@ static struct platform_device at91sam9rl_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,
@@ -247,7 +248,7 @@ 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] = {
@@ -267,7 +268,7 @@ static struct platform_device at91sam9rl_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),
@@ -312,7 +313,7 @@ void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
  * -------------------------------------------------------------------- */
 
 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
-static u64 lcdc_dmamask = 0xffffffffUL;
+static u64 lcdc_dmamask = DMA_BIT_MASK(32);
 static struct atmel_lcdfb_info lcdc_data;
 
 static struct resource lcdc_resources[] = {
@@ -340,7 +341,7 @@ static struct platform_device at91_lcdc_device = {
         .id             = 0,
         .dev            = {
                                 .dma_mask               = &lcdc_dmamask,
-                                .coherent_dma_mask      = 0xffffffff,
+                                .coherent_dma_mask      = DMA_BIT_MASK(32),
                                 .platform_data          = &lcdc_data,
         },
         .resource       = lcdc_resources,
@@ -494,12 +495,15 @@ 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 at91sam9rl_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),
@@ -529,12 +533,15 @@ static struct atmel_uart_data uart0_data = {
         .use_dma_rx     = 1,
 };
 
+static u64 uart0_dmamask = DMA_BIT_MASK(32);
+
 static struct platform_device at91sam9rl_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),
@@ -566,12 +573,15 @@ static struct atmel_uart_data uart1_data = {
         .use_dma_rx     = 1,
 };
 
+static u64 uart1_dmamask = DMA_BIT_MASK(32);
+
 static struct platform_device at91sam9rl_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),
@@ -601,12 +611,15 @@ static struct atmel_uart_data uart2_data = {
         .use_dma_rx     = 1,
 };
 
+static u64 uart2_dmamask = DMA_BIT_MASK(32);
+
 static struct platform_device at91sam9rl_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),
@@ -636,12 +649,15 @@ static struct atmel_uart_data uart3_data = {
         .use_dma_rx     = 1,
 };
 
+static u64 uart3_dmamask = DMA_BIT_MASK(32);
+
 static struct platform_device at91sam9rl_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),
@@ -653,7 +669,7 @@ static inline void configure_usart3_pins(void)
         at91_set_A_periph(AT91_PIN_PB1, 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)