[mirror_ubuntu-hirsute-kernel.git] / arch / arm / mach-s3c2410 / s3c2440-dma.c

/* linux/arch/arm/mach-s3c2410/s3c2440-dma.c
 *
 * (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 <asm/dma.h>
#include <asm/arch/dma.h>
#include "dma.h"

#include "cpu.h"

#include <asm/arch/regs-serial.h>
#include <asm/arch/regs-gpio.h>
#include <asm/arch/regs-ac97.h>
#include <asm/arch/regs-mem.h>
#include <asm/arch/regs-lcd.h>
#include <asm/arch/regs-sdi.h>
#include <asm/arch/regs-iis.h>
#include <asm/arch/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 int s3c2440_dma_add(struct sys_device *sysdev)
{
	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);
Commit	Line	Data
98c418a0 BD	1	/* linux/arch/arm/mach-s3c2410/s3c2440-dma.c
	2	*
	3	* (c) 2006 Simtec Electronics
	4	* Ben Dooks <ben@simtec.co.uk>
	5	*
	6	* S3C2440 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>
	17	#include <linux/sysdev.h>
	18
	19	#include <asm/dma.h>
	20	#include <asm/arch/dma.h>
	21	#include "dma.h"
	22
	23	#include "cpu.h"
	24
	25	#include <asm/arch/regs-serial.h>
	26	#include <asm/arch/regs-gpio.h>
	27	#include <asm/arch/regs-ac97.h>
	28	#include <asm/arch/regs-mem.h>
	29	#include <asm/arch/regs-lcd.h>
	30	#include <asm/arch/regs-sdi.h>
	31	#include <asm/arch/regs-iis.h>
	32	#include <asm/arch/regs-spi.h>
	33
	34	static struct s3c24xx_dma_map __initdata s3c2440_dma_mappings[] = {
	35	[DMACH_XD0] = {
	36	.name = "xdreq0",
	37	.channels[0] = S3C2410_DCON_CH0_XDREQ0 \| DMA_CH_VALID,
	38	},
	39	[DMACH_XD1] = {
	40	.name = "xdreq1",
	41	.channels[1] = S3C2410_DCON_CH1_XDREQ1 \| DMA_CH_VALID,
	42	},
	43	[DMACH_SDI] = {
	44	.name = "sdi",
	45	.channels[0] = S3C2410_DCON_CH0_SDI \| DMA_CH_VALID,
	46	.channels[1] = S3C2440_DCON_CH1_SDI \| DMA_CH_VALID,
	47	.channels[2] = S3C2410_DCON_CH2_SDI \| DMA_CH_VALID,
	48	.channels[3] = S3C2410_DCON_CH3_SDI \| DMA_CH_VALID,
	49	.hw_addr.to = S3C2410_PA_IIS + S3C2410_IISFIFO,
	50	.hw_addr.from = S3C2410_PA_IIS + S3C2410_IISFIFO,
	51	},
	52	[DMACH_SPI0] = {
	53	.name = "spi0",
	54	.channels[1] = S3C2410_DCON_CH1_SPI \| DMA_CH_VALID,
	55	.hw_addr.to = S3C2410_PA_SPI + S3C2410_SPTDAT,
	56	.hw_addr.from = S3C2410_PA_SPI + S3C2410_SPRDAT,
	57	},
	58	[DMACH_SPI1] = {
	59	.name = "spi1",
	60	.channels[3] = S3C2410_DCON_CH3_SPI \| DMA_CH_VALID,
	61	.hw_addr.to = S3C2410_PA_SPI + 0x20 + S3C2410_SPTDAT,
	62	.hw_addr.from = S3C2410_PA_SPI + 0x20 + S3C2410_SPRDAT,
	63	},
	64	[DMACH_UART0] = {
65	.name = "uart0",
66	.channels[0] = S3C2410_DCON_CH0_UART0 \| DMA_CH_VALID,
67	.hw_addr.to = S3C2410_PA_UART0 + S3C2410_UTXH,
68	.hw_addr.from = S3C2410_PA_UART0 + S3C2410_URXH,
69	},
70	[DMACH_UART1] = {
71	.name = "uart1",
72	.channels[1] = S3C2410_DCON_CH1_UART1 \| DMA_CH_VALID,
73	.hw_addr.to = S3C2410_PA_UART1 + S3C2410_UTXH,
74	.hw_addr.from = S3C2410_PA_UART1 + S3C2410_URXH,
75	},
76	[DMACH_UART2] = {
77	.name = "uart2",
78	.channels[3] = S3C2410_DCON_CH3_UART2 \| DMA_CH_VALID,
79	.hw_addr.to = S3C2410_PA_UART2 + S3C2410_UTXH,
80	.hw_addr.from = S3C2410_PA_UART2 + S3C2410_URXH,
81	},
82	[DMACH_TIMER] = {
83	.name = "timer",
84	.channels[0] = S3C2410_DCON_CH0_TIMER \| DMA_CH_VALID,
85	.channels[2] = S3C2410_DCON_CH2_TIMER \| DMA_CH_VALID,
86	.channels[3] = S3C2410_DCON_CH3_TIMER \| DMA_CH_VALID,
87	},
88	[DMACH_I2S_IN] = {
89	.name = "i2s-sdi",
90	.channels[1] = S3C2410_DCON_CH1_I2SSDI \| DMA_CH_VALID,
91	.channels[2] = S3C2410_DCON_CH2_I2SSDI \| DMA_CH_VALID,
92	.hw_addr.from = S3C2410_PA_IIS + S3C2410_IISFIFO,
93	},
94	[DMACH_I2S_OUT] = {
95	.name = "i2s-sdo",
96	.channels[0] = S3C2440_DCON_CH0_I2SSDO \| DMA_CH_VALID,
97	.channels[2] = S3C2410_DCON_CH2_I2SSDO \| DMA_CH_VALID,
98	.hw_addr.to = S3C2410_PA_IIS + S3C2410_IISFIFO,
99	},
100	[DMACH_PCM_IN] = {
101	.name = "pcm-in",
102	.channels[0] = S3C2440_DCON_CH0_PCMIN \| DMA_CH_VALID,
103	.channels[2] = S3C2440_DCON_CH2_PCMIN \| DMA_CH_VALID,
104	.hw_addr.from = S3C2440_PA_AC97 + S3C_AC97_PCM_DATA,
105	},
106	[DMACH_PCM_OUT] = {
107	.name = "pcm-out",
108	.channels[1] = S3C2440_DCON_CH1_PCMOUT \| DMA_CH_VALID,
109	.channels[3] = S3C2440_DCON_CH3_PCMOUT \| DMA_CH_VALID,
110	.hw_addr.to = S3C2440_PA_AC97 + S3C_AC97_PCM_DATA,
111	},
112	[DMACH_MIC_IN] = {
113	.name = "mic-in",
114	.channels[2] = S3C2440_DCON_CH2_MICIN \| DMA_CH_VALID,
115	.channels[3] = S3C2440_DCON_CH3_MICIN \| DMA_CH_VALID,
116	.hw_addr.from = S3C2440_PA_AC97 + S3C_AC97_MIC_DATA,
117	},
118	[DMACH_USB_EP1] = {
119	.name = "usb-ep1",
120	.channels[0] = S3C2410_DCON_CH0_USBEP1 \| DMA_CH_VALID,
121	},
122	[DMACH_USB_EP2] = {
123	.name = "usb-ep2",
124	.channels[1] = S3C2410_DCON_CH1_USBEP2 \| DMA_CH_VALID,
125	},
126	[DMACH_USB_EP3] = {
127	.name = "usb-ep3",
128	.channels[2] = S3C2410_DCON_CH2_USBEP3 \| DMA_CH_VALID,
129	},
130	[DMACH_USB_EP4] = {
131	.name = "usb-ep4",
132	.channels[3] = S3C2410_DCON_CH3_USBEP4 \| DMA_CH_VALID,
133	},
134	};
135
136	static void s3c2440_dma_select(struct s3c2410_dma_chan *chan,
137	struct s3c24xx_dma_map *map)
138	{
139	chan->dcon = map->channels[chan->number] & ~DMA_CH_VALID;
140	}
141
142	static struct s3c24xx_dma_selection __initdata s3c2440_dma_sel = {
143	.select = s3c2440_dma_select,
144	.dcon_mask = 7 << 24,
145	.map = s3c2440_dma_mappings,
146	.map_size = ARRAY_SIZE(s3c2440_dma_mappings),
147	};
148
149	static int s3c2440_dma_add(struct sys_device *sysdev)
150	{
151	return s3c24xx_dma_init_map(&s3c2440_dma_sel);
152	}
153
154	static struct sysdev_driver s3c2440_dma_driver = {
155	.add = s3c2440_dma_add,
156	};
157
158	static int __init s3c2440_dma_init(void)
159	{
160	return sysdev_driver_register(&s3c2440_sysclass, &s3c2440_dma_driver);
161	}
162
163	arch_initcall(s3c2440_dma_init);
164