dma-s3c2410.c
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/* linux/arch/arm/mach-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/device.h>
#include <linux/serial_core.h>
#include <mach/map.h>
#include <mach/dma.h>
#include <plat/cpu.h>
#include <plat/dma-s3c24xx.h>
#include <plat/regs-serial.h>
#include <mach/regs-gpio.h>
#include <plat/regs-dma.h>
#include <mach/regs-lcd.h>
#include <plat/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,
},
[DMACH_SPI0] = {
.name = "spi0",
.channels[1] = S3C2410_DCON_CH1_SPI | DMA_CH_VALID,
},
[DMACH_SPI1] = {
.name = "spi1",
.channels[3] = S3C2410_DCON_CH3_SPI | DMA_CH_VALID,
},
[DMACH_UART0] = {
.name = "uart0",
.channels[0] = S3C2410_DCON_CH0_UART0 | DMA_CH_VALID,
},
[DMACH_UART1] = {
.name = "uart1",
.channels[1] = S3C2410_DCON_CH1_UART1 | DMA_CH_VALID,
},
[DMACH_UART2] = {
.name = "uart2",
.channels[3] = S3C2410_DCON_CH3_UART2 | DMA_CH_VALID,
},
[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,
},
[DMACH_I2S_OUT] = {
.name = "i2s-sdo",
.channels[2] = S3C2410_DCON_CH2_I2SSDO | DMA_CH_VALID,
},
[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 struct s3c24xx_dma_order __initdata s3c2410_dma_order = {
.channels = {
[DMACH_SDI] = {
.list = {
[0] = 3 | DMA_CH_VALID,
[1] = 2 | DMA_CH_VALID,
[2] = 0 | DMA_CH_VALID,
},
},
[DMACH_I2S_IN] = {
.list = {
[0] = 1 | DMA_CH_VALID,
[1] = 2 | DMA_CH_VALID,
},
},
},
};
static int __init s3c2410_dma_add(struct device *dev,
struct subsys_interface *sif)
{
s3c2410_dma_init();
s3c24xx_dma_order_set(&s3c2410_dma_order);
return s3c24xx_dma_init_map(&s3c2410_dma_sel);
}
#if defined(CONFIG_CPU_S3C2410)
static struct subsys_interface s3c2410_dma_interface = {
.name = "s3c2410_dma",
.subsys = &s3c2410_subsys,
.add_dev = s3c2410_dma_add,
};
static int __init s3c2410_dma_drvinit(void)
{
return subsys_interface_register(&s3c2410_dma_interface);
}
arch_initcall(s3c2410_dma_drvinit);
static struct subsys_interface s3c2410a_dma_interface = {
.name = "s3c2410a_dma",
.subsys = &s3c2410a_subsys,
.add_dev = s3c2410_dma_add,
};
static int __init s3c2410a_dma_drvinit(void)
{
return subsys_interface_register(&s3c2410a_dma_interface);
}
arch_initcall(s3c2410a_dma_drvinit);
#endif
#if defined(CONFIG_CPU_S3C2442)
/* S3C2442 DMA contains the same selection table as the S3C2410 */
static struct subsys_interface s3c2442_dma_interface = {
.name = "s3c2442_dma",
.subsys = &s3c2442_subsys,
.add_dev = s3c2410_dma_add,
};
static int __init s3c2442_dma_drvinit(void)
{
return subsys_interface_register(&s3c2442_dma_interface);
}
arch_initcall(s3c2442_dma_drvinit);
#endif