mmc: add function to get the number of available mmc interfaces

[karo-tx-uboot.git] / drivers / mmc / mxcmmc.c

diff --git a/drivers/mmc/mxcmmc.c b/drivers/mmc/mxcmmc.c
index 59639539f304c43409650de56e3689fc246e191c..561b2045986f5858bcc1f90b0398831dfa32f079 100644 (file)
--- a/drivers/mmc/mxcmmc.c
+++ b/drivers/mmc/mxcmmc.c
@@ -25,9 +25,7 @@
 #include <mmc.h>
 #include <asm/errno.h>
 #include <asm/io.h>
-#ifdef CONFIG_MX27
 #include <asm/arch/clock.h>
-#endif
 
 #define DRIVER_NAME "mxc-mmc"
 
@@ -124,6 +122,8 @@ struct mxcmci_host {
 };
 
 static struct mxcmci_host mxcmci_host;
+
+/* maintainer note: do we really want to have a global host pointer? */
 static struct mxcmci_host *host = &mxcmci_host;
 
 static inline int mxcmci_use_dma(struct mxcmci_host *host)
@@ -422,7 +422,7 @@ static void mxcmci_set_clk_rate(struct mxcmci_host *host, unsigned int clk_ios)
 {
        unsigned int divider;
        int prescaler = 0;
-       unsigned long clk_in = imx_get_perclk2();
+       unsigned long clk_in = mxc_get_clock(MXC_ESDHC_CLK);
 
        while (prescaler <= 0x800) {
                for (divider = 1; divider <= 0xF; divider++) {
@@ -487,31 +487,30 @@ static int mxcmci_init(struct mmc *mmc)
        return 0;
 }
 
-static int mxcmci_initialize(bd_t *bis)
-{
-       struct mmc *mmc = NULL;
-
-       mmc = malloc(sizeof(struct mmc));
-
-       if (!mmc)
-               return -ENOMEM;
+static const struct mmc_ops mxcmci_ops = {
+       .send_cmd       = mxcmci_request,
+       .set_ios        = mxcmci_set_ios,
+       .init           = mxcmci_init,
+};
 
-       sprintf(mmc->name, "MXC MCI");
-       mmc->send_cmd = mxcmci_request;
-       mmc->set_ios = mxcmci_set_ios;
-       mmc->init = mxcmci_init;
-       mmc->host_caps = MMC_MODE_4BIT;
+static struct mmc_config mxcmci_cfg = {
+       .name           = "MXC MCI",
+       .ops            = &mxcmci_ops,
+       .host_caps      = MMC_MODE_4BIT,
+       .voltages       = MMC_VDD_32_33 | MMC_VDD_33_34,
+       .b_max          = CONFIG_SYS_MMC_MAX_BLK_COUNT,
+};
 
+static int mxcmci_initialize(bd_t *bis)
+{
        host->base = (struct mxcmci_regs *)CONFIG_MXC_MCI_REGS_BASE;
-       mmc->priv = host;
-       host->mmc = mmc;
-
-       mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
 
-       mmc->f_min = imx_get_perclk2() >> 7;
-       mmc->f_max = imx_get_perclk2() >> 1;
+       mxcmci_cfg.f_min = mxc_get_clock(MXC_ESDHC_CLK) >> 7;
+       mxcmci_cfg.f_max = mxc_get_clock(MXC_ESDHC_CLK) >> 1;
 
-       mmc_register(mmc);
+       host->mmc = mmc_create(&mxcmci_cfg, host);
+       if (host->mmc == NULL)
+               return -1;
 
        return 0;
 }