This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / arch / arm / mach-s3c2410 / s3c2412-dma.c

diff --git a/arch/arm/mach-s3c2410/s3c2412-dma.c b/arch/arm/mach-s3c2410/s3c2412-dma.c
new file mode 100644 (file)
index 0000000..138f726
--- /dev/null
+++ b/arch/arm/mach-s3c2410/s3c2412-dma.c
@@ -0,0 +1,161 @@
+/* linux/arch/arm/mach-s3c2410/s3c2412-dma.c
+ *
+ * Copyright (c) 2006 Simtec Electronics
+ *     Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C2412 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/sysdev.h>
+#include <linux/serial_core.h>
+
+#include <asm/dma.h>
+#include <asm/arch/dma.h>
+#include <asm/io.h>
+
+#include "dma.h"
+#include "cpu.h"
+
+#include <asm/arch/regs-serial.h>
+#include <asm/arch/regs-gpio.h>
+#include <asm/arch/regs-ac97.h>
+#include <asm/arch/regs-mem.h>
+#include <asm/arch/regs-lcd.h>
+#include <asm/arch/regs-sdi.h>
+#include <asm/arch/regs-iis.h>
+#include <asm/arch/regs-spi.h>
+
+#define MAP(x) { (x)| DMA_CH_VALID, (x)| DMA_CH_VALID, (x)| DMA_CH_VALID, (x)| DMA_CH_VALID }
+
+static struct s3c24xx_dma_map __initdata s3c2412_dma_mappings[] = {
+       [DMACH_XD0] = {
+               .name           = "xdreq0",
+               .channels       = MAP(S3C2412_DMAREQSEL_XDREQ0),
+       },
+       [DMACH_XD1] = {
+               .name           = "xdreq1",
+               .channels       = MAP(S3C2412_DMAREQSEL_XDREQ1),
+       },
+       [DMACH_SDI] = {
+               .name           = "sdi",
+               .channels       = MAP(S3C2412_DMAREQSEL_SDI),
+               .hw_addr.to     = S3C2410_PA_IIS + S3C2410_IISFIFO,
+               .hw_addr.from   = S3C2410_PA_IIS + S3C2410_IISFIFO,
+       },
+       [DMACH_SPI0] = {
+               .name           = "spi0",
+               .channels       = MAP(S3C2412_DMAREQSEL_SPI0TX),
+               .hw_addr.to     = S3C2410_PA_SPI + S3C2410_SPTDAT,
+               .hw_addr.from   = S3C2410_PA_SPI + S3C2410_SPRDAT,
+       },
+       [DMACH_SPI1] = {
+               .name           = "spi1",
+               .channels       = MAP(S3C2412_DMAREQSEL_SPI1TX),
+               .hw_addr.to     = S3C2410_PA_SPI + 0x20 + S3C2410_SPTDAT,
+               .hw_addr.from   = S3C2410_PA_SPI + 0x20 + S3C2410_SPRDAT,
+       },
+       [DMACH_UART0] = {
+               .name           = "uart0",
+               .channels       = MAP(S3C2412_DMAREQSEL_UART0_0),
+               .hw_addr.to     = S3C2410_PA_UART0 + S3C2410_UTXH,
+               .hw_addr.from   = S3C2410_PA_UART0 + S3C2410_URXH,
+       },
+       [DMACH_UART1] = {
+               .name           = "uart1",
+               .channels       = MAP(S3C2412_DMAREQSEL_UART1_0),
+               .hw_addr.to     = S3C2410_PA_UART1 + S3C2410_UTXH,
+               .hw_addr.from   = S3C2410_PA_UART1 + S3C2410_URXH,
+       },
+       [DMACH_UART2] = {
+               .name           = "uart2",
+               .channels       = MAP(S3C2412_DMAREQSEL_UART2_0),
+               .hw_addr.to     = S3C2410_PA_UART2 + S3C2410_UTXH,
+               .hw_addr.from   = S3C2410_PA_UART2 + S3C2410_URXH,
+       },
+       [DMACH_UART0_SRC2] = {
+               .name           = "uart0",
+               .channels       = MAP(S3C2412_DMAREQSEL_UART0_1),
+               .hw_addr.to     = S3C2410_PA_UART0 + S3C2410_UTXH,
+               .hw_addr.from   = S3C2410_PA_UART0 + S3C2410_URXH,
+       },
+       [DMACH_UART1_SRC2] = {
+               .name           = "uart1",
+               .channels       = MAP(S3C2412_DMAREQSEL_UART1_1),
+               .hw_addr.to     = S3C2410_PA_UART1 + S3C2410_UTXH,
+               .hw_addr.from   = S3C2410_PA_UART1 + S3C2410_URXH,
+       },
+       [DMACH_UART2_SRC2] = {
+               .name           = "uart2",
+               .channels       = MAP(S3C2412_DMAREQSEL_UART2_1),
+               .hw_addr.to     = S3C2410_PA_UART2 + S3C2410_UTXH,
+               .hw_addr.from   = S3C2410_PA_UART2 + S3C2410_URXH,
+       },
+       [DMACH_TIMER] = {
+               .name           = "timer",
+               .channels       = MAP(S3C2412_DMAREQSEL_TIMER),
+       },
+       [DMACH_I2S_IN] = {
+               .name           = "i2s-sdi",
+               .channels       = MAP(S3C2412_DMAREQSEL_I2SRX),
+               .hw_addr.from   = S3C2410_PA_IIS + S3C2410_IISFIFO,
+       },
+       [DMACH_I2S_OUT] = {
+               .name           = "i2s-sdo",
+               .channels       = MAP(S3C2412_DMAREQSEL_I2STX),
+               .hw_addr.to     = S3C2410_PA_IIS + S3C2410_IISFIFO,
+       },
+       [DMACH_USB_EP1] = {
+               .name           = "usb-ep1",
+               .channels       = MAP(S3C2412_DMAREQSEL_USBEP1),
+       },
+       [DMACH_USB_EP2] = {
+               .name           = "usb-ep2",
+               .channels       = MAP(S3C2412_DMAREQSEL_USBEP2),
+       },
+       [DMACH_USB_EP3] = {
+               .name           = "usb-ep3",
+               .channels       = MAP(S3C2412_DMAREQSEL_USBEP3),
+       },
+       [DMACH_USB_EP4] = {
+               .name           = "usb-ep4",
+               .channels       = MAP(S3C2412_DMAREQSEL_USBEP4),
+       },
+};
+
+static void s3c2412_dma_select(struct s3c2410_dma_chan *chan,
+                              struct s3c24xx_dma_map *map)
+{
+       writel(map->channels[0] | S3C2412_DMAREQSEL_HW,
+              chan->regs + S3C2412_DMA_DMAREQSEL);
+}
+
+static struct s3c24xx_dma_selection __initdata s3c2412_dma_sel = {
+       .select         = s3c2412_dma_select,
+       .dcon_mask      = 0,
+       .map            = s3c2412_dma_mappings,
+       .map_size       = ARRAY_SIZE(s3c2412_dma_mappings),
+};
+
+static int s3c2412_dma_add(struct sys_device *sysdev)
+{
+       return s3c24xx_dma_init_map(&s3c2412_dma_sel);
+}
+
+static struct sysdev_driver s3c2412_dma_driver = {
+       .add    = s3c2412_dma_add,
+};
+
+static int __init s3c2412_dma_init(void)
+{
+       return sysdev_driver_register(&s3c2412_sysclass, &s3c2412_dma_driver);
+}
+
+arch_initcall(s3c2412_dma_init);