3fc3a25ba4
DMA channel mappings for the S3C2442 Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
159 lines
4.3 KiB
C
159 lines
4.3 KiB
C
/* 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);
|
|
|
|
|