drivers/mmc/mv_sdhci.c

   1 #include <common.h>
   2 #include <malloc.h>
   3 #include <sdhci.h>
   4
   5 #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
   6 static struct sdhci_ops mv_ops;
   7
   8 #if defined(CONFIG_SHEEVA_88SV331xV5)
   9 #define SD_CE_ATA_2     0xEA
  10 #define  MMC_CARD       0x1000
  11 #define  MMC_WIDTH      0x0100
  12 static inline void mv_sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
  13 {
  14         struct mmc *mmc = host->mmc;
  15         u32 ata = (u32)host->ioaddr + SD_CE_ATA_2;
  16
  17         if (!IS_SD(mmc) && reg == SDHCI_HOST_CONTROL) {
  18                 if (mmc->bus_width == 8)
  19                         writew(readw(ata) | (MMC_CARD | MMC_WIDTH), ata);
  20                 else
  21                         writew(readw(ata) & ~(MMC_CARD | MMC_WIDTH), ata);
  22         }
  23
  24         writeb(val, host->ioaddr + reg);
  25 }
  26
  27 #else
  28 #define mv_sdhci_writeb NULL
  29 #endif /* CONFIG_SHEEVA_88SV331xV5 */
  30 #endif /* CONFIG_MMC_SDHCI_IO_ACCESSORS */
  31
  32 static char *MVSDH_NAME = "mv_sdh";
  33 int mv_sdh_init(u32 regbase, u32 max_clk, u32 min_clk, u32 quirks)
  34 {
  35         struct sdhci_host *host = NULL;
  36         host = (struct sdhci_host *)malloc(sizeof(struct sdhci_host));
  37         if (!host) {
  38                 printf("sdh_host malloc fail!\n");
  39                 return 1;
  40         }
  41
  42         host->name = MVSDH_NAME;
  43         host->ioaddr = (void *)regbase;
  44         host->quirks = quirks;
  45 #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
  46         memset(&mv_ops, 0, sizeof(struct sdhci_ops));
  47         mv_ops.write_b = mv_sdhci_writeb;
  48         host->ops = &mv_ops;
  49 #endif
  50         if (quirks & SDHCI_QUIRK_REG32_RW)
  51                 host->version = sdhci_readl(host, SDHCI_HOST_VERSION - 2) >> 16;
  52         else
  53                 host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
  54         return add_sdhci(host, max_clk, min_clk);
  55 }