S5P6442: DMA: Add platform devices for PL330 DMACs

Samsung's Soc S5P6442 has two PL330 DMACs. First is dedicated for
Memory->Memory data transfer while the second is meant for data
transfer with peripherals.
Define and add the peripheral PL330 DMAC as platform device on the
S5P6442 platform.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 105 insertions, 0 deletions

diff --git a/arch/arm/mach-s5p6442/dma.c b/arch/arm/mach-s5p6442/dma.c
new file mode 100644
index 000000000000..ad4f8704b93d
--- /dev/null
+++ b/arch/arm/mach-s5p6442/dma.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2010 Samsung Electronics Co. Ltd.
+ *      Jaswinder Singh <jassi.brar@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+
+#include <plat/devs.h>
+#include <plat/irqs.h>
+
+#include <mach/map.h>
+#include <mach/irqs.h>
+
+#include <plat/s3c-pl330-pdata.h>
+
+static u64 dma_dmamask = DMA_BIT_MASK(32);
+
+static struct resource s5p6442_pdma_resource[] = {
+        [0] = {
+                .start  = S5P6442_PA_PDMA,
+                .end    = S5P6442_PA_PDMA + SZ_4K,
+                .flags = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = IRQ_PDMA,
+                .end    = IRQ_PDMA,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct s3c_pl330_platdata s5p6442_pdma_pdata = {
+        .peri = {
+                [0] = DMACH_UART0_RX,
+                [1] = DMACH_UART0_TX,
+                [2] = DMACH_UART1_RX,
+                [3] = DMACH_UART1_TX,
+                [4] = DMACH_UART2_RX,
+                [5] = DMACH_UART2_TX,
+                [6] = DMACH_MAX,
+                [7] = DMACH_MAX,
+                [8] = DMACH_MAX,
+                [9] = DMACH_I2S0_RX,
+                [10] = DMACH_I2S0_TX,
+                [11] = DMACH_I2S0S_TX,
+                [12] = DMACH_I2S1_RX,
+                [13] = DMACH_I2S1_TX,
+                [14] = DMACH_MAX,
+                [15] = DMACH_MAX,
+                [16] = DMACH_SPI0_RX,
+                [17] = DMACH_SPI0_TX,
+                [18] = DMACH_MAX,
+                [19] = DMACH_MAX,
+                [20] = DMACH_PCM0_RX,
+                [21] = DMACH_PCM0_TX,
+                [22] = DMACH_PCM1_RX,
+                [23] = DMACH_PCM1_TX,
+                [24] = DMACH_MAX,
+                [25] = DMACH_MAX,
+                [26] = DMACH_MAX,
+                [27] = DMACH_MSM_REQ0,
+                [28] = DMACH_MSM_REQ1,
+                [29] = DMACH_MSM_REQ2,
+                [30] = DMACH_MSM_REQ3,
+                [31] = DMACH_MAX,
+        },
+};
+
+static struct platform_device s5p6442_device_pdma = {
+        .name           = "s3c-pl330",
+        .id             = 1,
+        .num_resources  = ARRAY_SIZE(s5p6442_pdma_resource),
+        .resource       = s5p6442_pdma_resource,
+        .dev            = {
+                .dma_mask = &dma_dmamask,
+                .coherent_dma_mask = DMA_BIT_MASK(32),
+                .platform_data = &s5p6442_pdma_pdata,
+        },
+};
+
+static struct platform_device *s5p6442_dmacs[] __initdata = {
+        &s5p6442_device_pdma,
+};
+
+static int __init s5p6442_dma_init(void)
+{
+        platform_add_devices(s5p6442_dmacs, ARRAY_SIZE(s5p6442_dmacs));
+
+        return 0;
+}
+arch_initcall(s5p6442_dma_init);