arch/arm/plat-samsung/dev-hsmmc4.c

   1 /* linux/arch/arm/plat-samsung/dev-dw_mmc.c
   2  *
   3  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
   4  *              http://www.samsung.com
   5  *
   6  * Samsung device definition for DesingWare mobile storage
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11 */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/mmc/host.h>
  16 #include <linux/mmc/dw_mmc.h>
  17 #include <linux/dma-mapping.h>
  18
  19 #include <mach/map.h>
  20 #include <plat/devs.h>
  21 #include <plat/cpu.h>
  22 #include <plat/dw_mmc.h>
  23
  24 #define S3C_SZ_DW_MMC   (0x1000)
  25
  26 static struct resource s3c_hsmmc4_resource[] = {
  27         [0] = {
  28                 .start  = S3C_PA_DW_MMC,
  29                 .end    = S3C_PA_DW_MMC + S3C_SZ_DW_MMC - 1,
  30                 .flags  = IORESOURCE_MEM,
  31         },
  32         [1] = {
  33                 .start  = IRQ_DW_MMC,
  34                 .end    = IRQ_DW_MMC,
  35                 .flags  = IORESOURCE_IRQ,
  36         }
  37 };
  38
  39 static u64 s3c_device_hsmmc4_dmamask = DMA_BIT_MASK(32);
  40
  41 /* FIXME move to s5pc210 directory */
  42 #include <mach/gpio.h>
  43 #include <plat/gpio-cfg.h>
  44 static int hsmmc4_init(u32 slot_id, irq_handler_t dummy, void *data)
  45 {
  46         unsigned int gpio;
  47
  48         for (gpio = S5PV310_GPK0(0); gpio <= S5PV310_GPK0(6); gpio++) {
  49                 if (gpio == S5PV310_GPK0(2))
  50                         continue;
  51                 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
  52                 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
  53                 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
  54         }
  55         for (gpio = S5PV310_GPK1(3); gpio <= S5PV310_GPK1(6); gpio++) {
  56                 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(4));
  57                 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
  58                 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
  59         }
  60
  61         return 0;
  62 }
  63
  64 struct dw_mci_board s3c_hsmmc4_def_platdata = {
  65         .quirks         = DW_MCI_QUIRK_HIGHSPEED | DW_MCI_QUIRK_IDMAC_DTO |
  66                         DW_MCI_QUIRK_BROKEN_CARD_DETECTION |
  67                         DW_MCI_QUIRK_AUTO_SEND_STOP |
  68                         DW_MCI_QUIRK_CLK_GATING,
  69         .caps           = MMC_CAP_8_BIT_DATA | MMC_CAP_4_BIT_DATA |
  70                         MMC_CAP_MMC_HIGHSPEED | MMC_CAP_DDR |
  71                         MMC_CAP_NONREMOVABLE | MMC_CAP_ERASE,
  72         .num_slots      = 1,
  73         .init           = hsmmc4_init,
  74         .bus_hz         = 200000000,
  75         .page_size      = PAGE_SIZE << 2,
  76 };
  77
  78 struct platform_device s3c_device_hsmmc4 = {
  79         .name                   = "dw_mmc",
  80         .id                     = -1,
  81         .num_resources          = ARRAY_SIZE(s3c_hsmmc4_resource),
  82         .resource               = s3c_hsmmc4_resource,
  83         .dev                    = {
  84                 .dma_mask               = &s3c_device_hsmmc4_dmamask,
  85                 .platform_data          = &s3c_hsmmc4_def_platdata,
  86                 .coherent_dma_mask      = DMA_BIT_MASK(32),
  87         },
  88 };
  89
  90 void s3c_dwmmc_set_platdata(struct dw_mci_board *b)
  91 {
  92         struct dw_mci_board *set = &s3c_hsmmc4_def_platdata;
  93
  94         if (b->quirks)
  95                 set->quirks = b->quirks;
  96         if (b->init)
  97                 set->init = b->init;
  98         if (b->bus_hz)
  99                 set->bus_hz = b->bus_hz;
 100 }