/* 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 __init 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);