1 files changed, 174 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c24xx/dma-s3c2443.c b/arch/arm/mach-s3c24xx/dma-s3c2443.c
new file mode 100644
index 00000000000..e227c472a40
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/dma-s3c2443.c
@@ -0,0 +1,174 @@
+/* linux/arch/arm/mach-s3c2443/dma.c
+ *
+ * Copyright (c) 2007 Simtec Electronics
+ *      Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C2443 DMA selection
+ *
+ * http://armlinux.simtec.co.uk/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/serial_core.h>
+#include <linux/io.h>
+
+#include <mach/dma.h>
+
+#include <plat/dma-s3c24xx.h>
+#include <plat/cpu.h>
+
+#include <plat/regs-serial.h>
+#include <mach/regs-gpio.h>
+#include <plat/regs-ac97.h>
+#include <plat/regs-dma.h>
+#include <mach/regs-mem.h>
+#include <mach/regs-lcd.h>
+#include <mach/regs-sdi.h>
+#include <plat/regs-iis.h>
+#include <plat/regs-spi.h>
+
+#define MAP(x) { \
+                [0]     = (x) | DMA_CH_VALID,   \
+                [1]     = (x) | DMA_CH_VALID,   \
+                [2]     = (x) | DMA_CH_VALID,   \
+                [3]     = (x) | DMA_CH_VALID,   \
+                [4]     = (x) | DMA_CH_VALID,   \
+                [5]     = (x) | DMA_CH_VALID,   \
+        }
+
+static struct s3c24xx_dma_map __initdata s3c2443_dma_mappings[] = {
+        [DMACH_XD0] = {
+                .name           = "xdreq0",
+                .channels       = MAP(S3C2443_DMAREQSEL_XDREQ0),
+        },
+        [DMACH_XD1] = {
+                .name           = "xdreq1",
+                .channels       = MAP(S3C2443_DMAREQSEL_XDREQ1),
+        },
+        [DMACH_SDI] = { /* only on S3C2443 */
+                .name           = "sdi",
+                .channels       = MAP(S3C2443_DMAREQSEL_SDI),
+        },
+        [DMACH_SPI0] = {
+                .name           = "spi0",
+                .channels       = MAP(S3C2443_DMAREQSEL_SPI0TX),
+        },
+        [DMACH_SPI1] = { /* only on S3C2443/S3C2450 */
+                .name           = "spi1",
+                .channels       = MAP(S3C2443_DMAREQSEL_SPI1TX),
+        },
+        [DMACH_UART0] = {
+                .name           = "uart0",
+                .channels       = MAP(S3C2443_DMAREQSEL_UART0_0),
+        },
+        [DMACH_UART1] = {
+                .name           = "uart1",
+                .channels       = MAP(S3C2443_DMAREQSEL_UART1_0),
+        },
+        [DMACH_UART2] = {
+                .name           = "uart2",
+                .channels       = MAP(S3C2443_DMAREQSEL_UART2_0),
+        },
+        [DMACH_UART3] = {
+                .name           = "uart3",
+                .channels       = MAP(S3C2443_DMAREQSEL_UART3_0),
+        },
+        [DMACH_UART0_SRC2] = {
+                .name           = "uart0",
+                .channels       = MAP(S3C2443_DMAREQSEL_UART0_1),
+        },
+        [DMACH_UART1_SRC2] = {
+                .name           = "uart1",
+                .channels       = MAP(S3C2443_DMAREQSEL_UART1_1),
+        },
+        [DMACH_UART2_SRC2] = {
+                .name           = "uart2",
+                .channels       = MAP(S3C2443_DMAREQSEL_UART2_1),
+        },
+        [DMACH_UART3_SRC2] = {
+                .name           = "uart3",
+                .channels       = MAP(S3C2443_DMAREQSEL_UART3_1),
+        },
+        [DMACH_TIMER] = {
+                .name           = "timer",
+                .channels       = MAP(S3C2443_DMAREQSEL_TIMER),
+        },
+        [DMACH_I2S_IN] = {
+                .name           = "i2s-sdi",
+                .channels       = MAP(S3C2443_DMAREQSEL_I2SRX),
+        },
+        [DMACH_I2S_OUT] = {
+                .name           = "i2s-sdo",
+                .channels       = MAP(S3C2443_DMAREQSEL_I2STX),
+        },
+        [DMACH_PCM_IN] = {
+                .name           = "pcm-in",
+                .channels       = MAP(S3C2443_DMAREQSEL_PCMIN),
+        },
+        [DMACH_PCM_OUT] = {
+                .name           = "pcm-out",
+                .channels       = MAP(S3C2443_DMAREQSEL_PCMOUT),
+        },
+        [DMACH_MIC_IN] = {
+                .name           = "mic-in",
+                .channels       = MAP(S3C2443_DMAREQSEL_MICIN),
+        },
+};
+
+static void s3c2443_dma_select(struct s3c2410_dma_chan *chan,
+                               struct s3c24xx_dma_map *map)
+{
+        writel(map->channels[0] | S3C2443_DMAREQSEL_HW,
+               chan->regs + S3C2443_DMA_DMAREQSEL);
+}
+
+static struct s3c24xx_dma_selection __initdata s3c2443_dma_sel = {
+        .select         = s3c2443_dma_select,
+        .dcon_mask      = 0,
+        .map            = s3c2443_dma_mappings,
+        .map_size       = ARRAY_SIZE(s3c2443_dma_mappings),
+};
+
+static int __init s3c2443_dma_add(struct device *dev,
+                                  struct subsys_interface *sif)
+{
+        s3c24xx_dma_init(6, IRQ_S3C2443_DMA0, 0x100);
+        return s3c24xx_dma_init_map(&s3c2443_dma_sel);
+}
+
+#ifdef CONFIG_CPU_S3C2416
+/* S3C2416 DMA contains the same selection table as the S3C2443 */
+static struct subsys_interface s3c2416_dma_interface = {
+        .name           = "s3c2416_dma",
+        .subsys         = &s3c2416_subsys,
+        .add_dev        = s3c2443_dma_add,
+};
+
+static int __init s3c2416_dma_init(void)
+{
+        return subsys_interface_register(&s3c2416_dma_interface);
+}
+
+arch_initcall(s3c2416_dma_init);
+#endif
+
+#ifdef CONFIG_CPU_S3C2443
+static struct subsys_interface s3c2443_dma_interface = {
+        .name           = "s3c2443_dma",
+        .subsys         = &s3c2443_subsys,
+        .add_dev        = s3c2443_dma_add,
+};
+
+static int __init s3c2443_dma_init(void)
+{
+        return subsys_interface_register(&s3c2443_dma_interface);
+}
+
+arch_initcall(s3c2443_dma_init);
+#endif