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/* linux/arch/arm/mach-s3c2443/dma.c
*
* Copyright (c) 2007 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
*
* S3C2443 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 <asm/plat-s3c24xx/dma.h>
#include <asm/plat-s3c24xx/cpu.h>
#include <asm/plat-s3c/regs-serial.h>
#include <asm/arch/regs-gpio.h>
#include <asm/plat-s3c/regs-ac97.h>
#include <asm/arch/regs-mem.h>
#include <asm/arch/regs-lcd.h>
#include <asm/arch/regs-sdi.h>
#include <asm/plat-s3c24xx/regs-iis.h>
#include <asm/plat-s3c24xx/regs-spi.h>
#define MAP(x) { \
[0] = (x) | DMA_CH_VALID, \
[1] = (x) | DMA_CH_VALID, \
[2] = (x) | DMA_CH_VALID, \
[3] = (x) | DMA_CH_VALID, \
[4] = (x) | DMA_CH_VALID, \
[5] = (x) | DMA_CH_VALID, \
}
static struct s3c24xx_dma_map __initdata s3c2443_dma_mappings[] = {
[DMACH_XD0] = {
.name = "xdreq0",
.channels = MAP(S3C2443_DMAREQSEL_XDREQ0),
},
[DMACH_XD1] = {
.name = "xdreq1",
.channels = MAP(S3C2443_DMAREQSEL_XDREQ1),
},
[DMACH_SDI] = {
.name = "sdi",
.channels = MAP(S3C2443_DMAREQSEL_SDI),
.hw_addr.to = S3C2410_PA_IIS + S3C2410_IISFIFO,
.hw_addr.from = S3C2410_PA_IIS + S3C2410_IISFIFO,
},
[DMACH_SPI0] = {
.name = "spi0",
.channels = MAP(S3C2443_DMAREQSEL_SPI0TX),
.hw_addr.to = S3C2410_PA_SPI + S3C2410_SPTDAT,
.hw_addr.from = S3C2410_PA_SPI + S3C2410_SPRDAT,
},
[DMACH_SPI1] = {
.name = "spi1",
.channels = MAP(S3C2443_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(S3C2443_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(S3C2443_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(S3C2443_DMAREQSEL_UART2_0),
.hw_addr.to = S3C2410_PA_UART2 + S3C2410_UTXH,
.hw_addr.from = S3C2410_PA_UART2 + S3C2410_URXH,
},
[DMACH_UART3] = {
.name = "uart3",
.channels = MAP(S3C2443_DMAREQSEL_UART3_0),
.hw_addr.to = S3C2443_PA_UART3 + S3C2410_UTXH,
.hw_addr.from = S3C2443_PA_UART3 + S3C2410_URXH,
},
[DMACH_UART0_SRC2] = {
.name = "uart0",
.channels = MAP(S3C2443_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(S3C2443_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(S3C2443_DMAREQSEL_UART2_1),
.hw_addr.to = S3C2410_PA_UART2 + S3C2410_UTXH,
.hw_addr.from = S3C2410_PA_UART2 + S3C2410_URXH,
},
[DMACH_UART3_SRC2] = {
.name = "uart3",
.channels = MAP(S3C2443_DMAREQSEL_UART3_1),
.hw_addr.to = S3C2443_PA_UART3 + S3C2410_UTXH,
.hw_addr.from = S3C2443_PA_UART3 + S3C2410_URXH,
},
[DMACH_TIMER] = {
.name = "timer",
.channels = MAP(S3C2443_DMAREQSEL_TIMER),
},
[DMACH_I2S_IN] = {
.name = "i2s-sdi",
.channels = MAP(S3C2443_DMAREQSEL_I2SRX),
.hw_addr.from = S3C2410_PA_IIS + S3C2410_IISFIFO,
},
[DMACH_I2S_OUT] = {
.name = "i2s-sdo",
.channels = MAP(S3C2443_DMAREQSEL_I2STX),
.hw_addr.to = S3C2410_PA_IIS + S3C2410_IISFIFO,
},
[DMACH_PCM_IN] = {
.name = "pcm-in",
.channels = MAP(S3C2443_DMAREQSEL_PCMIN),
.hw_addr.from = S3C2440_PA_AC97 + S3C_AC97_PCM_DATA,
},
[DMACH_PCM_OUT] = {
.name = "pcm-out",
.channels = MAP(S3C2443_DMAREQSEL_PCMOUT),
.hw_addr.to = S3C2440_PA_AC97 + S3C_AC97_PCM_DATA,
},
[DMACH_MIC_IN] = {
.name = "mic-in",
.channels = MAP(S3C2443_DMAREQSEL_MICIN),
.hw_addr.from = S3C2440_PA_AC97 + S3C_AC97_MIC_DATA,
},
};
static void s3c2443_dma_select(struct s3c2410_dma_chan *chan,
struct s3c24xx_dma_map *map)
{
writel(map->channels[0] | S3C2443_DMAREQSEL_HW,
chan->regs + S3C2443_DMA_DMAREQSEL);
}
static struct s3c24xx_dma_selection __initdata s3c2443_dma_sel = {
.select = s3c2443_dma_select,
.dcon_mask = 0,
.map = s3c2443_dma_mappings,
.map_size = ARRAY_SIZE(s3c2443_dma_mappings),
};
static int s3c2443_dma_add(struct sys_device *sysdev)
{
s3c24xx_dma_init(6, IRQ_S3C2443_DMA0, 0x100);
return s3c24xx_dma_init_map(&s3c2443_dma_sel);
}
static struct sysdev_driver s3c2443_dma_driver = {
.add = s3c2443_dma_add,
};
static int __init s3c2443_dma_init(void)
{
return sysdev_driver_register(&s3c2443_sysclass, &s3c2443_dma_driver);
}
arch_initcall(s3c2443_dma_init);
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