diff options
Diffstat (limited to 'arch/arm/mach-s3c2410')
| -rw-r--r-- | arch/arm/mach-s3c2410/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-s3c2410/s3c2412-dma.c | 160 |
2 files changed, 161 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2410/Makefile b/arch/arm/mach-s3c2410/Makefile index 23f0909915db..0d87a9de0034 100644 --- a/arch/arm/mach-s3c2410/Makefile +++ b/arch/arm/mach-s3c2410/Makefile @@ -34,6 +34,7 @@ obj-$(CONFIG_PM_SIMTEC) += pm-simtec.o obj-$(CONFIG_CPU_S3C2412) += s3c2412.o obj-$(CONFIG_CPU_S3C2412) += s3c2412-irq.o obj-$(CONFIG_CPU_S3C2412) += s3c2412-clock.o +obj-dma-$(CONFIG_CPU_S3C2412) += s3c2412-dma.o # # S3C244X support diff --git a/arch/arm/mach-s3c2410/s3c2412-dma.c b/arch/arm/mach-s3c2410/s3c2412-dma.c new file mode 100644 index 000000000000..171f3706d36d --- /dev/null +++ b/arch/arm/mach-s3c2410/s3c2412-dma.c @@ -0,0 +1,160 @@ +/* linux/arch/arm/mach-s3c2410/s3c2412-dma.c + * + * (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 <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(chan->regs + S3C2412_DMA_DMAREQSEL, + map->channels[0] | S3C2412_DMAREQSEL_HW); +} + +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); |
