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dma.c
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1 /* linux/arch/arm/mach-s5pc100/dma.c
2  *
3  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
4  * http://www.samsung.com
5  *
6  * Copyright (C) 2010 Samsung Electronics Co. Ltd.
7  * Jaswinder Singh <[email protected]>
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22  */
23 
24 #include <linux/dma-mapping.h>
25 #include <linux/amba/bus.h>
26 #include <linux/amba/pl330.h>
27 
28 #include <asm/irq.h>
29 #include <plat/devs.h>
30 #include <plat/irqs.h>
31 
32 #include <mach/map.h>
33 #include <mach/irqs.h>
34 #include <mach/dma.h>
35 
36 static u8 pdma0_peri[] = {
37  DMACH_UART0_RX,
38  DMACH_UART0_TX,
39  DMACH_UART1_RX,
40  DMACH_UART1_TX,
41  DMACH_UART2_RX,
42  DMACH_UART2_TX,
43  DMACH_UART3_RX,
44  DMACH_UART3_TX,
45  DMACH_IRDA,
46  DMACH_I2S0_RX,
47  DMACH_I2S0_TX,
48  DMACH_I2S0S_TX,
49  DMACH_I2S1_RX,
50  DMACH_I2S1_TX,
51  DMACH_I2S2_RX,
52  DMACH_I2S2_TX,
53  DMACH_SPI0_RX,
54  DMACH_SPI0_TX,
55  DMACH_SPI1_RX,
56  DMACH_SPI1_TX,
57  DMACH_SPI2_RX,
58  DMACH_SPI2_TX,
59  DMACH_AC97_MICIN,
60  DMACH_AC97_PCMIN,
61  DMACH_AC97_PCMOUT,
62  DMACH_EXTERNAL,
63  DMACH_PWM,
64  DMACH_SPDIF,
65  DMACH_HSI_RX,
66  DMACH_HSI_TX,
67 };
68 
69 static struct dma_pl330_platdata s5pc100_pdma0_pdata = {
70  .nr_valid_peri = ARRAY_SIZE(pdma0_peri),
71  .peri_id = pdma0_peri,
72 };
73 
74 static AMBA_AHB_DEVICE(s5pc100_pdma0, "dma-pl330.0", 0x00041330,
75  S5PC100_PA_PDMA0, {IRQ_PDMA0}, &s5pc100_pdma0_pdata);
76 
77 static u8 pdma1_peri[] = {
78  DMACH_UART0_RX,
79  DMACH_UART0_TX,
80  DMACH_UART1_RX,
81  DMACH_UART1_TX,
82  DMACH_UART2_RX,
83  DMACH_UART2_TX,
84  DMACH_UART3_RX,
85  DMACH_UART3_TX,
86  DMACH_IRDA,
87  DMACH_I2S0_RX,
88  DMACH_I2S0_TX,
89  DMACH_I2S0S_TX,
90  DMACH_I2S1_RX,
91  DMACH_I2S1_TX,
92  DMACH_I2S2_RX,
93  DMACH_I2S2_TX,
94  DMACH_SPI0_RX,
95  DMACH_SPI0_TX,
96  DMACH_SPI1_RX,
97  DMACH_SPI1_TX,
98  DMACH_SPI2_RX,
99  DMACH_SPI2_TX,
100  DMACH_PCM0_RX,
101  DMACH_PCM0_TX,
102  DMACH_PCM1_RX,
103  DMACH_PCM1_TX,
104  DMACH_MSM_REQ0,
105  DMACH_MSM_REQ1,
106  DMACH_MSM_REQ2,
107  DMACH_MSM_REQ3,
108 };
109 
110 static struct dma_pl330_platdata s5pc100_pdma1_pdata = {
111  .nr_valid_peri = ARRAY_SIZE(pdma1_peri),
112  .peri_id = pdma1_peri,
113 };
114 
115 static AMBA_AHB_DEVICE(s5pc100_pdma1, "dma-pl330.1", 0x00041330,
116  S5PC100_PA_PDMA1, {IRQ_PDMA1}, &s5pc100_pdma1_pdata);
117 
118 static int __init s5pc100_dma_init(void)
119 {
120  dma_cap_set(DMA_SLAVE, s5pc100_pdma0_pdata.cap_mask);
121  dma_cap_set(DMA_CYCLIC, s5pc100_pdma0_pdata.cap_mask);
122  amba_device_register(&s5pc100_pdma0_device, &iomem_resource);
123 
124  dma_cap_set(DMA_SLAVE, s5pc100_pdma1_pdata.cap_mask);
125  dma_cap_set(DMA_CYCLIC, s5pc100_pdma1_pdata.cap_mask);
126  amba_device_register(&s5pc100_pdma1_device, &iomem_resource);
127 
128  return 0;
129 }
130 arch_initcall(s5pc100_dma_init);
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