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Ben Dooks505788c2006-09-15 23:42:24 +01001/* linux/arch/arm/mach-s3c2410/dma.c
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 *
Ben Dooksa21765a2007-02-11 18:31:01 +01003 * Copyright (c) 2006 Simtec Electronics
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 * Ben Dooks <ben@simtec.co.uk>
5 *
Ben Dooksa21765a2007-02-11 18:31:01 +01006 * S3C2410 DMA selection
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 *
Ben Dooks505788c2006-09-15 23:42:24 +01008 * http://armlinux.simtec.co.uk/
Linus Torvalds1da177e2005-04-16 15:20:36 -07009 *
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 Dooks505788c2006-09-15 23:42:24 +010013*/
Linus Torvalds1da177e2005-04-16 15:20:36 -070014
Ben Dooksa21765a2007-02-11 18:31:01 +010015#include <linux/kernel.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#include <linux/init.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070017#include <linux/sysdev.h>
Ben Dooksa21765a2007-02-11 18:31:01 +010018#include <linux/serial_core.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070019
Ben Dooks20934cd2009-03-19 15:02:38 +000020#include <mach/map.h>
Russell Kinga09e64f2008-08-05 16:14:15 +010021#include <mach/dma.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070022
Ben Dooksa2b7ba92008-10-07 22:26:09 +010023#include <plat/cpu.h>
Ben Dooks992426b2010-02-20 23:01:33 +000024#include <plat/dma-s3c24xx.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070025
Ben Dooksa2b7ba92008-10-07 22:26:09 +010026#include <plat/regs-serial.h>
Russell Kinga09e64f2008-08-05 16:14:15 +010027#include <mach/regs-gpio.h>
Ben Dooksf74c95c2008-10-30 10:14:36 +000028#include <plat/regs-ac97.h>
Ben Dooks44dc9402009-03-19 15:02:35 +000029#include <plat/regs-dma.h>
Russell Kinga09e64f2008-08-05 16:14:15 +010030#include <mach/regs-mem.h>
31#include <mach/regs-lcd.h>
32#include <mach/regs-sdi.h>
Ben Dooks8150bc82009-03-04 00:49:26 +000033#include <plat/regs-iis.h>
Ben Dooks13622702008-10-30 10:14:38 +000034#include <plat/regs-spi.h>
Ben Dooks505788c2006-09-15 23:42:24 +010035
Ben Dooksa21765a2007-02-11 18:31:01 +010036static 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 Torvalds1da177e2005-04-16 15:20:36 -0700116};
117
Ben Dooksa21765a2007-02-11 18:31:01 +0100118static void s3c2410_dma_select(struct s3c2410_dma_chan *chan,
119 struct s3c24xx_dma_map *map)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120{
Ben Dooksa21765a2007-02-11 18:31:01 +0100121 chan->dcon = map->channels[chan->number] & ~DMA_CH_VALID;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122}
123
Ben Dooksa21765a2007-02-11 18:31:01 +0100124static 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 Torvalds1da177e2005-04-16 15:20:36 -0700129};
130
Ben Dooksdad8d6c2007-02-13 13:12:16 +0100131static 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 Heltf2c10d62007-09-04 17:19:33 +0100149static int __init s3c2410_dma_add(struct sys_device *sysdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150{
Ben Dooks48adbcf2007-02-17 15:37:14 +0100151 s3c2410_dma_init();
Ben Dooksdad8d6c2007-02-13 13:12:16 +0100152 s3c24xx_dma_order_set(&s3c2410_dma_order);
Ben Dooksa21765a2007-02-11 18:31:01 +0100153 return s3c24xx_dma_init_map(&s3c2410_dma_sel);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154}
155
Ben Dooksa21765a2007-02-11 18:31:01 +0100156#if defined(CONFIG_CPU_S3C2410)
157static struct sysdev_driver s3c2410_dma_driver = {
158 .add = s3c2410_dma_add,
159};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160
Ben Dooks48adbcf2007-02-17 15:37:14 +0100161static int __init s3c2410_dma_drvinit(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162{
Ben Dooksa21765a2007-02-11 18:31:01 +0100163 return sysdev_driver_register(&s3c2410_sysclass, &s3c2410_dma_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164}
165
Ben Dooks48adbcf2007-02-17 15:37:14 +0100166arch_initcall(s3c2410_dma_drvinit);
Ben Dooksf0176792009-07-30 23:23:38 +0100167
168static struct sysdev_driver s3c2410a_dma_driver = {
169 .add = s3c2410_dma_add,
170};
171
172static int __init s3c2410a_dma_drvinit(void)
173{
174 return sysdev_driver_register(&s3c2410a_sysclass, &s3c2410a_dma_driver);
175}
176
177arch_initcall(s3c2410a_dma_drvinit);
Ben Dooksa21765a2007-02-11 18:31:01 +0100178#endif
Ben Dooks505788c2006-09-15 23:42:24 +0100179
Ben Dooksa21765a2007-02-11 18:31:01 +0100180#if defined(CONFIG_CPU_S3C2442)
181/* S3C2442 DMA contains the same selection table as the S3C2410 */
182static struct sysdev_driver s3c2442_dma_driver = {
183 .add = s3c2410_dma_add,
184};
185
Ben Dooks48adbcf2007-02-17 15:37:14 +0100186static int __init s3c2442_dma_drvinit(void)
Ben Dooks505788c2006-09-15 23:42:24 +0100187{
Ben Dooksa21765a2007-02-11 18:31:01 +0100188 return sysdev_driver_register(&s3c2442_sysclass, &s3c2442_dma_driver);
Ben Dooks505788c2006-09-15 23:42:24 +0100189}
190
Ben Dooks48adbcf2007-02-17 15:37:14 +0100191arch_initcall(s3c2442_dma_drvinit);
Ben Dooksa21765a2007-02-11 18:31:01 +0100192#endif
Ben Dooks505788c2006-09-15 23:42:24 +0100193