| /* linux/arch/arm/mach-s3c2410/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/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); |
| |
| |