Ben Dooks | 505788c | 2006-09-15 23:42:24 +0100 | [diff] [blame] | 1 | /* linux/arch/arm/mach-s3c2410/dma.c |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * |
Ben Dooks | a21765a | 2007-02-11 18:31:01 +0100 | [diff] [blame] | 3 | * Copyright (c) 2006 Simtec Electronics |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * Ben Dooks <ben@simtec.co.uk> |
| 5 | * |
Ben Dooks | a21765a | 2007-02-11 18:31:01 +0100 | [diff] [blame] | 6 | * S3C2410 DMA selection |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * |
Ben Dooks | 505788c | 2006-09-15 23:42:24 +0100 | [diff] [blame] | 8 | * http://armlinux.simtec.co.uk/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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. |
Ben Dooks | 505788c | 2006-09-15 23:42:24 +0100 | [diff] [blame] | 13 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | |
Ben Dooks | a21765a | 2007-02-11 18:31:01 +0100 | [diff] [blame] | 15 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | #include <linux/init.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | #include <linux/sysdev.h> |
Ben Dooks | a21765a | 2007-02-11 18:31:01 +0100 | [diff] [blame] | 18 | #include <linux/serial_core.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | |
Ben Dooks | 20934cd | 2009-03-19 15:02:38 +0000 | [diff] [blame] | 20 | #include <mach/map.h> |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 21 | #include <mach/dma.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | |
Ben Dooks | a2b7ba9 | 2008-10-07 22:26:09 +0100 | [diff] [blame] | 23 | #include <plat/cpu.h> |
Ben Dooks | 5a9eb8d | 2009-03-19 15:02:33 +0000 | [diff] [blame] | 24 | #include <plat/dma-plat.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [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 | 505788c | 2006-09-15 23:42:24 +0100 | [diff] [blame] | 35 | |
Ben Dooks | a21765a | 2007-02-11 18:31:01 +0100 | [diff] [blame] | 36 | static struct s3c24xx_dma_map __initdata s3c2410_dma_mappings[] = { |
| 37 | [DMACH_XD0] = { |
| 38 | .name = "xdreq0", |
| 39 | .channels[0] = S3C2410_DCON_CH0_XDREQ0 | DMA_CH_VALID, |
| 40 | }, |
| 41 | [DMACH_XD1] = { |
| 42 | .name = "xdreq1", |
| 43 | .channels[1] = S3C2410_DCON_CH1_XDREQ1 | DMA_CH_VALID, |
| 44 | }, |
| 45 | [DMACH_SDI] = { |
| 46 | .name = "sdi", |
| 47 | .channels[0] = S3C2410_DCON_CH0_SDI | DMA_CH_VALID, |
| 48 | .channels[2] = S3C2410_DCON_CH2_SDI | DMA_CH_VALID, |
| 49 | .channels[3] = S3C2410_DCON_CH3_SDI | DMA_CH_VALID, |
| 50 | .hw_addr.to = S3C2410_PA_IIS + S3C2410_IISFIFO, |
| 51 | .hw_addr.from = S3C2410_PA_IIS + S3C2410_IISFIFO, |
| 52 | }, |
| 53 | [DMACH_SPI0] = { |
| 54 | .name = "spi0", |
| 55 | .channels[1] = S3C2410_DCON_CH1_SPI | DMA_CH_VALID, |
| 56 | .hw_addr.to = S3C2410_PA_SPI + S3C2410_SPTDAT, |
| 57 | .hw_addr.from = S3C2410_PA_SPI + S3C2410_SPRDAT, |
| 58 | }, |
| 59 | [DMACH_SPI1] = { |
| 60 | .name = "spi1", |
| 61 | .channels[3] = S3C2410_DCON_CH3_SPI | DMA_CH_VALID, |
| 62 | .hw_addr.to = S3C2410_PA_SPI + 0x20 + S3C2410_SPTDAT, |
| 63 | .hw_addr.from = S3C2410_PA_SPI + 0x20 + S3C2410_SPRDAT, |
| 64 | }, |
| 65 | [DMACH_UART0] = { |
| 66 | .name = "uart0", |
| 67 | .channels[0] = S3C2410_DCON_CH0_UART0 | DMA_CH_VALID, |
| 68 | .hw_addr.to = S3C2410_PA_UART0 + S3C2410_UTXH, |
| 69 | .hw_addr.from = S3C2410_PA_UART0 + S3C2410_URXH, |
| 70 | }, |
| 71 | [DMACH_UART1] = { |
| 72 | .name = "uart1", |
| 73 | .channels[1] = S3C2410_DCON_CH1_UART1 | DMA_CH_VALID, |
| 74 | .hw_addr.to = S3C2410_PA_UART1 + S3C2410_UTXH, |
| 75 | .hw_addr.from = S3C2410_PA_UART1 + S3C2410_URXH, |
| 76 | }, |
| 77 | [DMACH_UART2] = { |
| 78 | .name = "uart2", |
| 79 | .channels[3] = S3C2410_DCON_CH3_UART2 | DMA_CH_VALID, |
| 80 | .hw_addr.to = S3C2410_PA_UART2 + S3C2410_UTXH, |
| 81 | .hw_addr.from = S3C2410_PA_UART2 + S3C2410_URXH, |
| 82 | }, |
| 83 | [DMACH_TIMER] = { |
| 84 | .name = "timer", |
| 85 | .channels[0] = S3C2410_DCON_CH0_TIMER | DMA_CH_VALID, |
| 86 | .channels[2] = S3C2410_DCON_CH2_TIMER | DMA_CH_VALID, |
| 87 | .channels[3] = S3C2410_DCON_CH3_TIMER | DMA_CH_VALID, |
| 88 | }, |
| 89 | [DMACH_I2S_IN] = { |
| 90 | .name = "i2s-sdi", |
| 91 | .channels[1] = S3C2410_DCON_CH1_I2SSDI | DMA_CH_VALID, |
| 92 | .channels[2] = S3C2410_DCON_CH2_I2SSDI | DMA_CH_VALID, |
| 93 | .hw_addr.from = S3C2410_PA_IIS + S3C2410_IISFIFO, |
| 94 | }, |
| 95 | [DMACH_I2S_OUT] = { |
| 96 | .name = "i2s-sdo", |
| 97 | .channels[2] = S3C2410_DCON_CH2_I2SSDO | DMA_CH_VALID, |
| 98 | .hw_addr.to = S3C2410_PA_IIS + S3C2410_IISFIFO, |
| 99 | }, |
| 100 | [DMACH_USB_EP1] = { |
| 101 | .name = "usb-ep1", |
| 102 | .channels[0] = S3C2410_DCON_CH0_USBEP1 | DMA_CH_VALID, |
| 103 | }, |
| 104 | [DMACH_USB_EP2] = { |
| 105 | .name = "usb-ep2", |
| 106 | .channels[1] = S3C2410_DCON_CH1_USBEP2 | DMA_CH_VALID, |
| 107 | }, |
| 108 | [DMACH_USB_EP3] = { |
| 109 | .name = "usb-ep3", |
| 110 | .channels[2] = S3C2410_DCON_CH2_USBEP3 | DMA_CH_VALID, |
| 111 | }, |
| 112 | [DMACH_USB_EP4] = { |
| 113 | .name = "usb-ep4", |
| 114 | .channels[3] =S3C2410_DCON_CH3_USBEP4 | DMA_CH_VALID, |
| 115 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | }; |
| 117 | |
Ben Dooks | a21765a | 2007-02-11 18:31:01 +0100 | [diff] [blame] | 118 | static void s3c2410_dma_select(struct s3c2410_dma_chan *chan, |
| 119 | struct s3c24xx_dma_map *map) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | { |
Ben Dooks | a21765a | 2007-02-11 18:31:01 +0100 | [diff] [blame] | 121 | chan->dcon = map->channels[chan->number] & ~DMA_CH_VALID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | } |
| 123 | |
Ben Dooks | a21765a | 2007-02-11 18:31:01 +0100 | [diff] [blame] | 124 | static struct s3c24xx_dma_selection __initdata s3c2410_dma_sel = { |
| 125 | .select = s3c2410_dma_select, |
| 126 | .dcon_mask = 7 << 24, |
| 127 | .map = s3c2410_dma_mappings, |
| 128 | .map_size = ARRAY_SIZE(s3c2410_dma_mappings), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | }; |
| 130 | |
Ben Dooks | dad8d6c | 2007-02-13 13:12:16 +0100 | [diff] [blame] | 131 | static struct s3c24xx_dma_order __initdata s3c2410_dma_order = { |
| 132 | .channels = { |
| 133 | [DMACH_SDI] = { |
| 134 | .list = { |
| 135 | [0] = 3 | DMA_CH_VALID, |
| 136 | [1] = 2 | DMA_CH_VALID, |
| 137 | [2] = 0 | DMA_CH_VALID, |
| 138 | }, |
| 139 | }, |
| 140 | [DMACH_I2S_IN] = { |
| 141 | .list = { |
| 142 | [0] = 1 | DMA_CH_VALID, |
| 143 | [1] = 2 | DMA_CH_VALID, |
| 144 | }, |
| 145 | }, |
| 146 | }, |
| 147 | }; |
| 148 | |
Krzysztof Helt | f2c10d6 | 2007-09-04 17:19:33 +0100 | [diff] [blame] | 149 | static int __init s3c2410_dma_add(struct sys_device *sysdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | { |
Ben Dooks | 48adbcf | 2007-02-17 15:37:14 +0100 | [diff] [blame] | 151 | s3c2410_dma_init(); |
Ben Dooks | dad8d6c | 2007-02-13 13:12:16 +0100 | [diff] [blame] | 152 | s3c24xx_dma_order_set(&s3c2410_dma_order); |
Ben Dooks | a21765a | 2007-02-11 18:31:01 +0100 | [diff] [blame] | 153 | return s3c24xx_dma_init_map(&s3c2410_dma_sel); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | } |
| 155 | |
Ben Dooks | a21765a | 2007-02-11 18:31:01 +0100 | [diff] [blame] | 156 | #if defined(CONFIG_CPU_S3C2410) |
| 157 | static struct sysdev_driver s3c2410_dma_driver = { |
| 158 | .add = s3c2410_dma_add, |
| 159 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | |
Ben Dooks | 48adbcf | 2007-02-17 15:37:14 +0100 | [diff] [blame] | 161 | static int __init s3c2410_dma_drvinit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | { |
Ben Dooks | a21765a | 2007-02-11 18:31:01 +0100 | [diff] [blame] | 163 | return sysdev_driver_register(&s3c2410_sysclass, &s3c2410_dma_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | } |
| 165 | |
Ben Dooks | 48adbcf | 2007-02-17 15:37:14 +0100 | [diff] [blame] | 166 | arch_initcall(s3c2410_dma_drvinit); |
Ben Dooks | a21765a | 2007-02-11 18:31:01 +0100 | [diff] [blame] | 167 | #endif |
Ben Dooks | 505788c | 2006-09-15 23:42:24 +0100 | [diff] [blame] | 168 | |
Ben Dooks | a21765a | 2007-02-11 18:31:01 +0100 | [diff] [blame] | 169 | #if defined(CONFIG_CPU_S3C2442) |
| 170 | /* S3C2442 DMA contains the same selection table as the S3C2410 */ |
| 171 | static struct sysdev_driver s3c2442_dma_driver = { |
| 172 | .add = s3c2410_dma_add, |
| 173 | }; |
| 174 | |
Ben Dooks | 48adbcf | 2007-02-17 15:37:14 +0100 | [diff] [blame] | 175 | static int __init s3c2442_dma_drvinit(void) |
Ben Dooks | 505788c | 2006-09-15 23:42:24 +0100 | [diff] [blame] | 176 | { |
Ben Dooks | a21765a | 2007-02-11 18:31:01 +0100 | [diff] [blame] | 177 | return sysdev_driver_register(&s3c2442_sysclass, &s3c2442_dma_driver); |
Ben Dooks | 505788c | 2006-09-15 23:42:24 +0100 | [diff] [blame] | 178 | } |
| 179 | |
Ben Dooks | 48adbcf | 2007-02-17 15:37:14 +0100 | [diff] [blame] | 180 | arch_initcall(s3c2442_dma_drvinit); |
Ben Dooks | a21765a | 2007-02-11 18:31:01 +0100 | [diff] [blame] | 181 | #endif |
Ben Dooks | 505788c | 2006-09-15 23:42:24 +0100 | [diff] [blame] | 182 | |