arch/arm/mach-ux500/devices-db8500.c

   1 /*
   2  * Copyright (C) ST-Ericsson SA 2010
   3  *
   4  * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
   5  * License terms: GNU General Public License (GPL) version 2
   6  */
   7
   8 #include <linux/kernel.h>
   9 #include <linux/platform_device.h>
  10 #include <linux/interrupt.h>
  11 #include <linux/io.h>
  12 #include <linux/gpio.h>
  13 #include <linux/amba/bus.h>
  14
  15 #include <plat/ste_dma40.h>
  16
  17 #include <mach/hardware.h>
  18 #include <mach/setup.h>
  19
  20 #include "ste-dma40-db8500.h"
  21
  22 static struct resource dma40_resources[] = {
  23         [0] = {
  24                 .start = U8500_DMA_BASE,
  25                 .end   = U8500_DMA_BASE + SZ_4K - 1,
  26                 .flags = IORESOURCE_MEM,
  27                 .name  = "base",
  28         },
  29         [1] = {
  30                 .start = U8500_DMA_LCPA_BASE,
  31                 .end   = U8500_DMA_LCPA_BASE + 2 * SZ_1K - 1,
  32                 .flags = IORESOURCE_MEM,
  33                 .name  = "lcpa",
  34         },
  35         [2] = {
  36                 .start = IRQ_DB8500_DMA,
  37                 .end   = IRQ_DB8500_DMA,
  38                 .flags = IORESOURCE_IRQ,
  39         }
  40 };
  41
  42 /* Default configuration for physcial memcpy */
  43 struct stedma40_chan_cfg dma40_memcpy_conf_phy = {
  44         .mode = STEDMA40_MODE_PHYSICAL,
  45         .dir = STEDMA40_MEM_TO_MEM,
  46
  47         .src_info.data_width = STEDMA40_BYTE_WIDTH,
  48         .src_info.psize = STEDMA40_PSIZE_PHY_1,
  49         .src_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL,
  50
  51         .dst_info.data_width = STEDMA40_BYTE_WIDTH,
  52         .dst_info.psize = STEDMA40_PSIZE_PHY_1,
  53         .dst_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL,
  54 };
  55 /* Default configuration for logical memcpy */
  56 struct stedma40_chan_cfg dma40_memcpy_conf_log = {
  57         .dir = STEDMA40_MEM_TO_MEM,
  58
  59         .src_info.data_width = STEDMA40_BYTE_WIDTH,
  60         .src_info.psize = STEDMA40_PSIZE_LOG_1,
  61         .src_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL,
  62
  63         .dst_info.data_width = STEDMA40_BYTE_WIDTH,
  64         .dst_info.psize = STEDMA40_PSIZE_LOG_1,
  65         .dst_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL,
  66 };
  67
  68 /*
  69  * Mapping between destination event lines and physical device address.
  70  * The event line is tied to a device and therefor the address is constant.
  71  */
  72 static const dma_addr_t dma40_tx_map[DB8500_DMA_NR_DEV];
  73
  74 /* Mapping between source event lines and physical device address */
  75 static const dma_addr_t dma40_rx_map[DB8500_DMA_NR_DEV];
  76
  77 /* Reserved event lines for memcpy only */
  78 static int dma40_memcpy_event[] = {
  79         DB8500_DMA_MEMCPY_TX_0,
  80         DB8500_DMA_MEMCPY_TX_1,
  81         DB8500_DMA_MEMCPY_TX_2,
  82         DB8500_DMA_MEMCPY_TX_3,
  83         DB8500_DMA_MEMCPY_TX_4,
  84         DB8500_DMA_MEMCPY_TX_5,
  85 };
  86
  87 static struct stedma40_platform_data dma40_plat_data = {
  88         .dev_len = DB8500_DMA_NR_DEV,
  89         .dev_rx = dma40_rx_map,
  90         .dev_tx = dma40_tx_map,
  91         .memcpy = dma40_memcpy_event,
  92         .memcpy_len = ARRAY_SIZE(dma40_memcpy_event),
  93         .memcpy_conf_phy = &dma40_memcpy_conf_phy,
  94         .memcpy_conf_log = &dma40_memcpy_conf_log,
  95         .disabled_channels = {-1},
  96 };
  97
  98 struct platform_device u8500_dma40_device = {
  99         .dev = {
 100                 .platform_data = &dma40_plat_data,
 101         },
 102         .name = "dma40",
 103         .id = 0,
 104         .num_resources = ARRAY_SIZE(dma40_resources),
 105         .resource = dma40_resources
 106 };
 107
 108 void dma40_u8500ed_fixup(void)
 109 {
 110         dma40_plat_data.memcpy = NULL;
 111         dma40_plat_data.memcpy_len = 0;
 112         dma40_resources[0].start = U8500_DMA_BASE_ED;
 113         dma40_resources[0].end = U8500_DMA_BASE_ED + SZ_4K - 1;
 114         dma40_resources[1].start = U8500_DMA_LCPA_BASE_ED;
 115         dma40_resources[1].end = U8500_DMA_LCPA_BASE_ED + 2 * SZ_1K - 1;
 116 }
 117
 118 struct resource keypad_resources[] = {
 119         [0] = {
 120                 .start = U8500_SKE_BASE,
 121                 .end = U8500_SKE_BASE + SZ_4K - 1,
 122                 .flags = IORESOURCE_MEM,
 123         },
 124         [1] = {
 125                 .start = IRQ_DB8500_KB,
 126                 .end = IRQ_DB8500_KB,
 127                 .flags = IORESOURCE_IRQ,
 128         },
 129 };
 130
 131 struct platform_device u8500_ske_keypad_device = {
 132         .name = "nmk-ske-keypad",
 133         .id = -1,
 134         .num_resources = ARRAY_SIZE(keypad_resources),
 135         .resource = keypad_resources,
 136 };