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authorLinus Torvalds <torvalds@g5.osdl.org>2006-09-29 01:40:39 +0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-29 01:40:39 +0400
commitebdea46fecae40c4d7effcd33f40918a37a1df4b (patch)
treee4312bf7f1f3d184738963a0ec300aa9fdfd55c1 /arch/arm/mach-s3c2410/s3c2410-dma.c
parentfecf3404f4aba6d0edeba31eeb018cbb6326dff2 (diff)
parent250d375d1da45a5e08ab8baf5eaa7eb258afd82b (diff)
downloadlinux-ebdea46fecae40c4d7effcd33f40918a37a1df4b.tar.xz
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (130 commits) [ARM] 3856/1: Add clocksource for Intel IXP4xx platforms [ARM] 3855/1: Add generic time support [ARM] 3873/1: S3C24XX: Add irq_chip names [ARM] 3872/1: S3C24XX: Apply consistant tabbing to irq_chips [ARM] 3871/1: S3C24XX: Fix ordering of EINT4..23 [ARM] nommu: confirms the CR_V bit in nommu mode [ARM] nommu: abort handler fixup for !CPU_CP15_MMU cores. [ARM] 3870/1: AT91: Start removing static memory mappings [ARM] 3869/1: AT91: NAND support for DK and KB9202 boards [ARM] 3868/1: AT91 hardware header update [ARM] 3867/1: AT91 GPIO update [ARM] 3866/1: AT91 clock update [ARM] 3865/1: AT91RM9200 header updates [ARM] 3862/2: S3C2410 - add basic power management support for AML M5900 series [ARM] kthread: switch arch/arm/kernel/apm.c [ARM] Off-by-one in arch/arm/common/icst* [ARM] 3864/1: Refactore sharpsl_pm [ARM] 3863/1: Add Locomo SPI Device [ARM] 3847/2: Convert LOMOMO to use struct device for GPIOs [ARM] Use CPU_CACHE_* where possible in asm/cacheflush.h ...
Diffstat (limited to 'arch/arm/mach-s3c2410/s3c2410-dma.c')
-rw-r--r--arch/arm/mach-s3c2410/s3c2410-dma.c158
1 files changed, 158 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2410/s3c2410-dma.c b/arch/arm/mach-s3c2410/s3c2410-dma.c
new file mode 100644
index 000000000000..51e5098b32e8
--- /dev/null
+++ b/arch/arm/mach-s3c2410/s3c2410-dma.c
@@ -0,0 +1,158 @@
+/* linux/arch/arm/mach-s3c2410/s3c2410-dma.c
+ *
+ * (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/sysdev.h>
+
+#include <asm/dma.h>
+#include <asm/arch/dma.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>
+
+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,
+ .hw_addr.to = S3C2410_PA_IIS + S3C2410_IISFIFO,
+ .hw_addr.from = S3C2410_PA_IIS + S3C2410_IISFIFO,
+ },
+ [DMACH_SPI0] = {
+ .name = "spi0",
+ .channels[1] = S3C2410_DCON_CH1_SPI | DMA_CH_VALID,
+ .hw_addr.to = S3C2410_PA_SPI + S3C2410_SPTDAT,
+ .hw_addr.from = S3C2410_PA_SPI + S3C2410_SPRDAT,
+ },
+ [DMACH_SPI1] = {
+ .name = "spi1",
+ .channels[3] = S3C2410_DCON_CH3_SPI | DMA_CH_VALID,
+ .hw_addr.to = S3C2410_PA_SPI + 0x20 + S3C2410_SPTDAT,
+ .hw_addr.from = S3C2410_PA_SPI + 0x20 + S3C2410_SPRDAT,
+ },
+ [DMACH_UART0] = {
+ .name = "uart0",
+ .channels[0] = S3C2410_DCON_CH0_UART0 | DMA_CH_VALID,
+ .hw_addr.to = S3C2410_PA_UART0 + S3C2410_UTXH,
+ .hw_addr.from = S3C2410_PA_UART0 + S3C2410_URXH,
+ },
+ [DMACH_UART1] = {
+ .name = "uart1",
+ .channels[1] = S3C2410_DCON_CH1_UART1 | DMA_CH_VALID,
+ .hw_addr.to = S3C2410_PA_UART1 + S3C2410_UTXH,
+ .hw_addr.from = S3C2410_PA_UART1 + S3C2410_URXH,
+ },
+ [DMACH_UART2] = {
+ .name = "uart2",
+ .channels[3] = S3C2410_DCON_CH3_UART2 | DMA_CH_VALID,
+ .hw_addr.to = S3C2410_PA_UART2 + S3C2410_UTXH,
+ .hw_addr.from = S3C2410_PA_UART2 + S3C2410_URXH,
+ },
+ [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,
+ .hw_addr.from = S3C2410_PA_IIS + S3C2410_IISFIFO,
+ },
+ [DMACH_I2S_OUT] = {
+ .name = "i2s-sdo",
+ .channels[2] = S3C2410_DCON_CH2_I2SSDO | DMA_CH_VALID,
+ .hw_addr.to = S3C2410_PA_IIS + S3C2410_IISFIFO,
+ },
+ [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 int s3c2410_dma_add(struct sys_device *sysdev)
+{
+ return s3c24xx_dma_init_map(&s3c2410_dma_sel);
+}
+
+static struct sysdev_driver s3c2410_dma_driver = {
+ .add = s3c2410_dma_add,
+};
+
+static int __init s3c2410_dma_init(void)
+{
+ return sysdev_driver_register(&s3c2410_sysclass, &s3c2410_dma_driver);
+}
+
+arch_initcall(s3c2410_dma_init);
+
+/* S3C2442 DMA contains the same selection table as the S3C2410 */
+
+static struct sysdev_driver s3c2442_dma_driver = {
+ .add = s3c2410_dma_add,
+};
+
+static int __init s3c2442_dma_init(void)
+{
+ return sysdev_driver_register(&s3c2442_sysclass, &s3c2442_dma_driver);
+}
+
+arch_initcall(s3c2442_dma_init);
+
+