ARM: 5621/1: at91/dmaengine: integration of at_hdmac driver in at91sam9g45 series

This is the integration of DMA engine driver into at91sam9g45 series
device file.
The associated driver is at_hdmac.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 49 insertions, 0 deletions

diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c b/arch/arm/mach-at91/at91sam9g45_devices.c
index d746e8621bc2..45720c84f0bf 100644
--- a/arch/arm/mach-at91/at91sam9g45_devices.c
+++ b/arch/arm/mach-at91/at91sam9g45_devices.c
@@ -24,11 +24,59 @@
 #include <mach/at91sam9g45.h>
 #include <mach/at91sam9g45_matrix.h>
 #include <mach/at91sam9_smc.h>
+#include <mach/at_hdmac.h>
 
 #include "generic.h"
 
 
 /* --------------------------------------------------------------------
+ *  HDMAC - AHB DMA Controller
+ * -------------------------------------------------------------------- */
+
+#if defined(CONFIG_AT_HDMAC) || defined(CONFIG_AT_HDMAC_MODULE)
+static u64 hdmac_dmamask = DMA_BIT_MASK(32);
+
+static struct at_dma_platform_data atdma_pdata = {
+        .nr_channels    = 8,
+};
+
+static struct resource hdmac_resources[] = {
+        [0] = {
+                .start  = AT91_BASE_SYS + AT91_DMA,
+                .end    = AT91_BASE_SYS + AT91_DMA + SZ_512 - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        [2] = {
+                .start  = AT91SAM9G45_ID_DMA,
+                .end    = AT91SAM9G45_ID_DMA,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device at_hdmac_device = {
+        .name           = "at_hdmac",
+        .id             = -1,
+        .dev            = {
+                                .dma_mask               = &hdmac_dmamask,
+                                .coherent_dma_mask      = DMA_BIT_MASK(32),
+                                .platform_data          = &atdma_pdata,
+        },
+        .resource       = hdmac_resources,
+        .num_resources  = ARRAY_SIZE(hdmac_resources),
+};
+
+void __init at91_add_device_hdmac(void)
+{
+        dma_cap_set(DMA_MEMCPY, atdma_pdata.cap_mask);
+        dma_cap_set(DMA_SLAVE, atdma_pdata.cap_mask);
+        platform_device_register(&at_hdmac_device);
+}
+#else
+void __init at91_add_device_hdmac(void) {}
+#endif
+
+
+/* --------------------------------------------------------------------
  *  USB Host (OHCI)
  * -------------------------------------------------------------------- */
 
@@ -1220,6 +1268,7 @@ void __init at91_add_device_serial(void) {}
  */
 static int __init at91_add_standard_devices(void)
 {
+        at91_add_device_hdmac();
         at91_add_device_rtc();
         at91_add_device_rtt();
         at91_add_device_watchdog();