/* linux/arch/arm/mach-s3c2440/dma.c * * Copyright (c) 2006 Simtec Electronics * Ben Dooks <ben@simtec.co.uk> * * S3C2440 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 <mach/map.h> #include <mach/dma.h> #include <plat/dma-plat.h> #include <plat/cpu.h> #include <plat/regs-serial.h> #include <mach/regs-gpio.h> #include <plat/regs-ac97.h> #include <plat/regs-dma.h> #include <mach/regs-mem.h> #include <mach/regs-lcd.h> #include <mach/regs-sdi.h> #include <plat/regs-iis.h> #include <plat/regs-spi.h> static struct s3c24xx_dma_map __initdata s3c2440_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[1] = S3C2440_DCON_CH1_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[0] = S3C2440_DCON_CH0_I2SSDO | DMA_CH_VALID, .channels[2] = S3C2410_DCON_CH2_I2SSDO | DMA_CH_VALID, .hw_addr.to = S3C2410_PA_IIS + S3C2410_IISFIFO, }, [DMACH_PCM_IN] = { .name = "pcm-in", .channels[0] = S3C2440_DCON_CH0_PCMIN | DMA_CH_VALID, .channels[2] = S3C2440_DCON_CH2_PCMIN | DMA_CH_VALID, .hw_addr.from = S3C2440_PA_AC97 + S3C_AC97_PCM_DATA, }, [DMACH_PCM_OUT] = { .name = "pcm-out", .channels[1] = S3C2440_DCON_CH1_PCMOUT | DMA_CH_VALID, .channels[3] = S3C2440_DCON_CH3_PCMOUT | DMA_CH_VALID, .hw_addr.to = S3C2440_PA_AC97 + S3C_AC97_PCM_DATA, }, [DMACH_MIC_IN] = { .name = "mic-in", .channels[2] = S3C2440_DCON_CH2_MICIN | DMA_CH_VALID, .channels[3] = S3C2440_DCON_CH3_MICIN | DMA_CH_VALID, .hw_addr.from = S3C2440_PA_AC97 + S3C_AC97_MIC_DATA, }, [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 s3c2440_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 s3c2440_dma_sel = { .select = s3c2440_dma_select, .dcon_mask = 7 << 24, .map = s3c2440_dma_mappings, .map_size = ARRAY_SIZE(s3c2440_dma_mappings), }; static struct s3c24xx_dma_order __initdata s3c2440_dma_order = { .channels = { [DMACH_SDI] = { .list = { [0] = 3 | DMA_CH_VALID, [1] = 2 | DMA_CH_VALID, [2] = 1 | DMA_CH_VALID, [3] = 0 | DMA_CH_VALID, }, }, [DMACH_I2S_IN] = { .list = { [0] = 1 | DMA_CH_VALID, [1] = 2 | DMA_CH_VALID, }, }, [DMACH_I2S_OUT] = { .list = { [0] = 2 | DMA_CH_VALID, [1] = 1 | DMA_CH_VALID, }, }, [DMACH_PCM_IN] = { .list = { [0] = 2 | DMA_CH_VALID, [1] = 1 | DMA_CH_VALID, }, }, [DMACH_PCM_OUT] = { .list = { [0] = 1 | DMA_CH_VALID, [1] = 3 | DMA_CH_VALID, }, }, [DMACH_MIC_IN] = { .list = { [0] = 3 | DMA_CH_VALID, [1] = 2 | DMA_CH_VALID, }, }, }, }; static int __init s3c2440_dma_add(struct sys_device *sysdev) { s3c2410_dma_init(); s3c24xx_dma_order_set(&s3c2440_dma_order); return s3c24xx_dma_init_map(&s3c2440_dma_sel); } static struct sysdev_driver s3c2440_dma_driver = { .add = s3c2440_dma_add, }; static int __init s3c2440_dma_init(void) { return sysdev_driver_register(&s3c2440_sysclass, &s3c2440_dma_driver); } arch_initcall(s3c2440_dma_init);