release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-s5p6442/dma.c

   1 /*
   2  * Copyright (C) 2010 Samsung Electronics Co. Ltd.
   3  *      Jaswinder Singh <jassi.brar@samsung.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19
  20 #include <linux/platform_device.h>
  21 #include <linux/dma-mapping.h>
  22
  23 #include <plat/devs.h>
  24 #include <plat/irqs.h>
  25
  26 #include <mach/map.h>
  27 #include <mach/irqs.h>
  28
  29 #include <plat/s3c-pl330-pdata.h>
  30
  31 static u64 dma_dmamask = DMA_BIT_MASK(32);
  32
  33 static struct resource s5p6442_pdma_resource[] = {
  34         [0] = {
  35                 .start  = S5P6442_PA_PDMA,
  36                 .end    = S5P6442_PA_PDMA + SZ_4K,
  37                 .flags = IORESOURCE_MEM,
  38         },
  39         [1] = {
  40                 .start  = IRQ_PDMA,
  41                 .end    = IRQ_PDMA,
  42                 .flags  = IORESOURCE_IRQ,
  43         },
  44 };
  45
  46 static struct s3c_pl330_platdata s5p6442_pdma_pdata = {
  47         .peri = {
  48                 [0] = DMACH_UART0_RX,
  49                 [1] = DMACH_UART0_TX,
  50                 [2] = DMACH_UART1_RX,
  51                 [3] = DMACH_UART1_TX,
  52                 [4] = DMACH_UART2_RX,
  53                 [5] = DMACH_UART2_TX,
  54                 [6] = DMACH_MAX,
  55                 [7] = DMACH_MAX,
  56                 [8] = DMACH_MAX,
  57                 [9] = DMACH_I2S0_RX,
  58                 [10] = DMACH_I2S0_TX,
  59                 [11] = DMACH_I2S0S_TX,
  60                 [12] = DMACH_I2S1_RX,
  61                 [13] = DMACH_I2S1_TX,
  62                 [14] = DMACH_MAX,
  63                 [15] = DMACH_MAX,
  64                 [16] = DMACH_SPI0_RX,
  65                 [17] = DMACH_SPI0_TX,
  66                 [18] = DMACH_MAX,
  67                 [19] = DMACH_MAX,
  68                 [20] = DMACH_PCM0_RX,
  69                 [21] = DMACH_PCM0_TX,
  70                 [22] = DMACH_PCM1_RX,
  71                 [23] = DMACH_PCM1_TX,
  72                 [24] = DMACH_MAX,
  73                 [25] = DMACH_MAX,
  74                 [26] = DMACH_MAX,
  75                 [27] = DMACH_MSM_REQ0,
  76                 [28] = DMACH_MSM_REQ1,
  77                 [29] = DMACH_MSM_REQ2,
  78                 [30] = DMACH_MSM_REQ3,
  79                 [31] = DMACH_MAX,
  80         },
  81 };
  82
  83 static struct platform_device s5p6442_device_pdma = {
  84         .name           = "s3c-pl330",
  85         .id             = 1,
  86         .num_resources  = ARRAY_SIZE(s5p6442_pdma_resource),
  87         .resource       = s5p6442_pdma_resource,
  88         .dev            = {
  89                 .dma_mask = &dma_dmamask,
  90                 .coherent_dma_mask = DMA_BIT_MASK(32),
  91                 .platform_data = &s5p6442_pdma_pdata,
  92         },
  93 };
  94
  95 static struct platform_device *s5p6442_dmacs[] __initdata = {
  96         &s5p6442_device_pdma,
  97 };
  98
  99 static int __init s5p6442_dma_init(void)
 100 {
 101         platform_add_devices(s5p6442_dmacs, ARRAY_SIZE(s5p6442_dmacs));
 102
 103         return 0;
 104 }
 105 arch_initcall(s5p6442_dma_init);