1 files changed, 186 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c24xx/dma-s3c2410.c b/arch/arm/mach-s3c24xx/dma-s3c2410.c
new file mode 100644
index 000000000000..4803338cf56e
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/dma-s3c2410.c
@@ -0,0 +1,186 @@
+/* linux/arch/arm/mach-s3c2410/dma.c
+ *
+ * Copyright (c) 2006 Simtec Electronics
+ *      Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C2410 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 <mach/map.h>
+#include <mach/dma.h>
+
+#include <plat/cpu.h>
+#include <plat/dma-s3c24xx.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>
+
+static struct s3c24xx_dma_map __initdata s3c2410_dma_mappings[] = {
+        [DMACH_XD0] = {
+                .name           = "xdreq0",
+                .channels[0]    = S3C2410_DCON_CH0_XDREQ0 | DMA_CH_VALID,
+        },
+        [DMACH_XD1] = {
+                .name           = "xdreq1",
+                .channels[1]    = S3C2410_DCON_CH1_XDREQ1 | DMA_CH_VALID,
+        },
+        [DMACH_SDI] = {
+                .name           = "sdi",
+                .channels[0]    = S3C2410_DCON_CH0_SDI | DMA_CH_VALID,
+                .channels[2]    = S3C2410_DCON_CH2_SDI | DMA_CH_VALID,
+                .channels[3]    = S3C2410_DCON_CH3_SDI | DMA_CH_VALID,
+        },
+        [DMACH_SPI0] = {
+                .name           = "spi0",
+                .channels[1]    = S3C2410_DCON_CH1_SPI | DMA_CH_VALID,
+        },
+        [DMACH_SPI1] = {
+                .name           = "spi1",
+                .channels[3]    = S3C2410_DCON_CH3_SPI | DMA_CH_VALID,
+        },
+        [DMACH_UART0] = {
+                .name           = "uart0",
+                .channels[0]    = S3C2410_DCON_CH0_UART0 | DMA_CH_VALID,
+        },
+        [DMACH_UART1] = {
+                .name           = "uart1",
+                .channels[1]    = S3C2410_DCON_CH1_UART1 | DMA_CH_VALID,
+        },
+        [DMACH_UART2] = {
+                .name           = "uart2",
+                .channels[3]    = S3C2410_DCON_CH3_UART2 | DMA_CH_VALID,
+        },
+        [DMACH_TIMER] = {
+                .name           = "timer",
+                .channels[0]    = S3C2410_DCON_CH0_TIMER | DMA_CH_VALID,
+                .channels[2]    = S3C2410_DCON_CH2_TIMER | DMA_CH_VALID,
+                .channels[3]    = S3C2410_DCON_CH3_TIMER | DMA_CH_VALID,
+        },
+        [DMACH_I2S_IN] = {
+                .name           = "i2s-sdi",
+                .channels[1]    = S3C2410_DCON_CH1_I2SSDI | DMA_CH_VALID,
+                .channels[2]    = S3C2410_DCON_CH2_I2SSDI | DMA_CH_VALID,
+        },
+        [DMACH_I2S_OUT] = {
+                .name           = "i2s-sdo",
+                .channels[2]    = S3C2410_DCON_CH2_I2SSDO | DMA_CH_VALID,
+        },
+        [DMACH_USB_EP1] = {
+                .name           = "usb-ep1",
+                .channels[0]    = S3C2410_DCON_CH0_USBEP1 | DMA_CH_VALID,
+        },
+        [DMACH_USB_EP2] = {
+                .name           = "usb-ep2",
+                .channels[1]    = S3C2410_DCON_CH1_USBEP2 | DMA_CH_VALID,
+        },
+        [DMACH_USB_EP3] = {
+                .name           = "usb-ep3",
+                .channels[2]    = S3C2410_DCON_CH2_USBEP3 | DMA_CH_VALID,
+        },
+        [DMACH_USB_EP4] = {
+                .name           = "usb-ep4",
+                .channels[3]    =S3C2410_DCON_CH3_USBEP4 | DMA_CH_VALID,
+        },
+};
+
+static void s3c2410_dma_select(struct s3c2410_dma_chan *chan,
+                               struct s3c24xx_dma_map *map)
+{
+        chan->dcon = map->channels[chan->number] & ~DMA_CH_VALID;
+}
+
+static struct s3c24xx_dma_selection __initdata s3c2410_dma_sel = {
+        .select         = s3c2410_dma_select,
+        .dcon_mask      = 7 << 24,
+        .map            = s3c2410_dma_mappings,
+        .map_size       = ARRAY_SIZE(s3c2410_dma_mappings),
+};
+
+static struct s3c24xx_dma_order __initdata s3c2410_dma_order = {
+        .channels       = {
+                [DMACH_SDI]     = {
+                        .list   = {
+                                [0]     = 3 | DMA_CH_VALID,
+                                [1]     = 2 | DMA_CH_VALID,
+                                [2]     = 0 | DMA_CH_VALID,
+                        },
+                },
+                [DMACH_I2S_IN]  = {
+                        .list   = {
+                                [0]     = 1 | DMA_CH_VALID,
+                                [1]     = 2 | DMA_CH_VALID,
+                        },
+                },
+        },
+};
+
+static int __init s3c2410_dma_add(struct device *dev,
+                                  struct subsys_interface *sif)
+{
+        s3c2410_dma_init();
+        s3c24xx_dma_order_set(&s3c2410_dma_order);
+        return s3c24xx_dma_init_map(&s3c2410_dma_sel);
+}
+
+#if defined(CONFIG_CPU_S3C2410)
+static struct subsys_interface s3c2410_dma_interface = {
+        .name           = "s3c2410_dma",
+        .subsys         = &s3c2410_subsys,
+        .add_dev        = s3c2410_dma_add,
+};
+
+static int __init s3c2410_dma_drvinit(void)
+{
+        return subsys_interface_register(&s3c2410_dma_interface);
+}
+
+arch_initcall(s3c2410_dma_drvinit);
+
+static struct subsys_interface s3c2410a_dma_interface = {
+        .name           = "s3c2410a_dma",
+        .subsys         = &s3c2410a_subsys,
+        .add_dev        = s3c2410_dma_add,
+};
+
+static int __init s3c2410a_dma_drvinit(void)
+{
+        return subsys_interface_register(&s3c2410a_dma_interface);
+}
+
+arch_initcall(s3c2410a_dma_drvinit);
+#endif
+
+#if defined(CONFIG_CPU_S3C2442)
+/* S3C2442 DMA contains the same selection table as the S3C2410 */
+static struct subsys_interface s3c2442_dma_interface = {
+        .name           = "s3c2442_dma",
+        .subsys         = &s3c2442_subsys,
+        .add_dev        = s3c2410_dma_add,
+};
+
+static int __init s3c2442_dma_drvinit(void)
+{
+        return subsys_interface_register(&s3c2442_dma_interface);
+}
+
+arch_initcall(s3c2442_dma_drvinit);
+#endif
+