Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 1 | /* linux/arch/arm/mach-s3c2443/dma.c |
| 2 | * |
| 3 | * Copyright (c) 2007 Simtec Electronics |
| 4 | * Ben Dooks <ben@simtec.co.uk> |
| 5 | * |
| 6 | * S3C2443 DMA selection |
| 7 | * |
| 8 | * http://armlinux.simtec.co.uk/ |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License version 2 as |
| 12 | * published by the Free Software Foundation. |
| 13 | */ |
| 14 | |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/init.h> |
Kay Sievers | 4a858cf | 2011-12-21 16:01:38 -0800 | [diff] [blame] | 17 | #include <linux/device.h> |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 18 | #include <linux/serial_core.h> |
Russell King | fced80c | 2008-09-06 12:10:45 +0100 | [diff] [blame] | 19 | #include <linux/io.h> |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 20 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 21 | #include <mach/dma.h> |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 22 | |
Ben Dooks | 992426b | 2010-02-20 23:01:33 +0000 | [diff] [blame] | 23 | #include <plat/dma-s3c24xx.h> |
Ben Dooks | a2b7ba9 | 2008-10-07 22:26:09 +0100 | [diff] [blame] | 24 | #include <plat/cpu.h> |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 25 | |
Ben Dooks | a2b7ba9 | 2008-10-07 22:26:09 +0100 | [diff] [blame] | 26 | #include <plat/regs-serial.h> |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 27 | #include <mach/regs-gpio.h> |
Ben Dooks | f74c95c | 2008-10-30 10:14:36 +0000 | [diff] [blame] | 28 | #include <plat/regs-ac97.h> |
Ben Dooks | 44dc940 | 2009-03-19 15:02:35 +0000 | [diff] [blame] | 29 | #include <plat/regs-dma.h> |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 30 | #include <mach/regs-mem.h> |
| 31 | #include <mach/regs-lcd.h> |
| 32 | #include <mach/regs-sdi.h> |
Ben Dooks | 8150bc8 | 2009-03-04 00:49:26 +0000 | [diff] [blame] | 33 | #include <plat/regs-iis.h> |
Ben Dooks | 1362270 | 2008-10-30 10:14:38 +0000 | [diff] [blame] | 34 | #include <plat/regs-spi.h> |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 35 | |
| 36 | #define MAP(x) { \ |
| 37 | [0] = (x) | DMA_CH_VALID, \ |
| 38 | [1] = (x) | DMA_CH_VALID, \ |
| 39 | [2] = (x) | DMA_CH_VALID, \ |
| 40 | [3] = (x) | DMA_CH_VALID, \ |
| 41 | [4] = (x) | DMA_CH_VALID, \ |
| 42 | [5] = (x) | DMA_CH_VALID, \ |
| 43 | } |
| 44 | |
| 45 | static struct s3c24xx_dma_map __initdata s3c2443_dma_mappings[] = { |
| 46 | [DMACH_XD0] = { |
| 47 | .name = "xdreq0", |
| 48 | .channels = MAP(S3C2443_DMAREQSEL_XDREQ0), |
| 49 | }, |
| 50 | [DMACH_XD1] = { |
| 51 | .name = "xdreq1", |
| 52 | .channels = MAP(S3C2443_DMAREQSEL_XDREQ1), |
| 53 | }, |
| 54 | [DMACH_SDI] = { |
| 55 | .name = "sdi", |
| 56 | .channels = MAP(S3C2443_DMAREQSEL_SDI), |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 57 | }, |
| 58 | [DMACH_SPI0] = { |
| 59 | .name = "spi0", |
| 60 | .channels = MAP(S3C2443_DMAREQSEL_SPI0TX), |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 61 | }, |
| 62 | [DMACH_SPI1] = { |
| 63 | .name = "spi1", |
| 64 | .channels = MAP(S3C2443_DMAREQSEL_SPI1TX), |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 65 | }, |
| 66 | [DMACH_UART0] = { |
| 67 | .name = "uart0", |
| 68 | .channels = MAP(S3C2443_DMAREQSEL_UART0_0), |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 69 | }, |
| 70 | [DMACH_UART1] = { |
| 71 | .name = "uart1", |
| 72 | .channels = MAP(S3C2443_DMAREQSEL_UART1_0), |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 73 | }, |
| 74 | [DMACH_UART2] = { |
| 75 | .name = "uart2", |
| 76 | .channels = MAP(S3C2443_DMAREQSEL_UART2_0), |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 77 | }, |
| 78 | [DMACH_UART3] = { |
| 79 | .name = "uart3", |
| 80 | .channels = MAP(S3C2443_DMAREQSEL_UART3_0), |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 81 | }, |
| 82 | [DMACH_UART0_SRC2] = { |
| 83 | .name = "uart0", |
| 84 | .channels = MAP(S3C2443_DMAREQSEL_UART0_1), |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 85 | }, |
| 86 | [DMACH_UART1_SRC2] = { |
| 87 | .name = "uart1", |
| 88 | .channels = MAP(S3C2443_DMAREQSEL_UART1_1), |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 89 | }, |
| 90 | [DMACH_UART2_SRC2] = { |
| 91 | .name = "uart2", |
| 92 | .channels = MAP(S3C2443_DMAREQSEL_UART2_1), |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 93 | }, |
| 94 | [DMACH_UART3_SRC2] = { |
| 95 | .name = "uart3", |
| 96 | .channels = MAP(S3C2443_DMAREQSEL_UART3_1), |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 97 | }, |
| 98 | [DMACH_TIMER] = { |
| 99 | .name = "timer", |
| 100 | .channels = MAP(S3C2443_DMAREQSEL_TIMER), |
| 101 | }, |
| 102 | [DMACH_I2S_IN] = { |
| 103 | .name = "i2s-sdi", |
| 104 | .channels = MAP(S3C2443_DMAREQSEL_I2SRX), |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 105 | }, |
| 106 | [DMACH_I2S_OUT] = { |
| 107 | .name = "i2s-sdo", |
| 108 | .channels = MAP(S3C2443_DMAREQSEL_I2STX), |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 109 | }, |
| 110 | [DMACH_PCM_IN] = { |
| 111 | .name = "pcm-in", |
| 112 | .channels = MAP(S3C2443_DMAREQSEL_PCMIN), |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 113 | }, |
| 114 | [DMACH_PCM_OUT] = { |
| 115 | .name = "pcm-out", |
| 116 | .channels = MAP(S3C2443_DMAREQSEL_PCMOUT), |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 117 | }, |
| 118 | [DMACH_MIC_IN] = { |
| 119 | .name = "mic-in", |
| 120 | .channels = MAP(S3C2443_DMAREQSEL_MICIN), |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 121 | }, |
| 122 | }; |
| 123 | |
| 124 | static void s3c2443_dma_select(struct s3c2410_dma_chan *chan, |
| 125 | struct s3c24xx_dma_map *map) |
| 126 | { |
| 127 | writel(map->channels[0] | S3C2443_DMAREQSEL_HW, |
| 128 | chan->regs + S3C2443_DMA_DMAREQSEL); |
| 129 | } |
| 130 | |
| 131 | static struct s3c24xx_dma_selection __initdata s3c2443_dma_sel = { |
| 132 | .select = s3c2443_dma_select, |
| 133 | .dcon_mask = 0, |
| 134 | .map = s3c2443_dma_mappings, |
| 135 | .map_size = ARRAY_SIZE(s3c2443_dma_mappings), |
| 136 | }; |
| 137 | |
Kay Sievers | 4a858cf | 2011-12-21 16:01:38 -0800 | [diff] [blame] | 138 | static int __init s3c2443_dma_add(struct device *dev) |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 139 | { |
| 140 | s3c24xx_dma_init(6, IRQ_S3C2443_DMA0, 0x100); |
| 141 | return s3c24xx_dma_init_map(&s3c2443_dma_sel); |
| 142 | } |
| 143 | |
Kay Sievers | 4a858cf | 2011-12-21 16:01:38 -0800 | [diff] [blame] | 144 | static struct subsys_interface s3c2443_dma_interface = { |
| 145 | .name = "s3c2443_dma", |
| 146 | .subsys = &s3c2443_subsys, |
| 147 | .add_dev = s3c2443_dma_add, |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 148 | }; |
| 149 | |
| 150 | static int __init s3c2443_dma_init(void) |
| 151 | { |
Kay Sievers | 4a858cf | 2011-12-21 16:01:38 -0800 | [diff] [blame] | 152 | return subsys_interface_register(&s3c2443_dma_interface); |
Ben Dooks | f8271e5 | 2007-02-17 15:41:50 +0100 | [diff] [blame] | 153 | } |
| 154 | |
| 155 | arch_initcall(s3c2443_dma_init); |