MMC core learns about SPI

[safe/jmp/linux-2.6] / drivers / mmc / core / sd.c

diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index c86588f..d1c1e0f 100644 (file)
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -323,9 +323,21 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
                goto err;
 
        /*
+        * For SPI, enable CRC as appropriate.
+        */
+       if (mmc_host_is_spi(host)) {
+               err = mmc_spi_set_crc(host, use_spi_crc);
+               if (err)
+                       goto err;
+       }
+
+       /*
         * Fetch CID from card.
         */
-       err = mmc_all_send_cid(host, cid);
+       if (mmc_host_is_spi(host))
+               err = mmc_send_cid(host, cid);
+       else
+               err = mmc_all_send_cid(host, cid);
        if (err)
                goto err;
 
@@ -351,13 +363,15 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
        }
 
        /*
-        * Set card RCA.
+        * For native busses:  get card RCA and quit open drain mode.
         */
-       err = mmc_send_relative_addr(host, &card->rca);
-       if (err)
-               goto free_card;
+       if (!mmc_host_is_spi(host)) {
+               err = mmc_send_relative_addr(host, &card->rca);
+               if (err)
+                       goto free_card;
 
-       mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
+               mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
+       }
 
        if (!oldcard) {
                /*
@@ -377,9 +391,11 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
        /*
         * Select card, as all following commands rely on that.
         */
-       err = mmc_select_card(card);
-       if (err)
-               goto free_card;
+       if (!mmc_host_is_spi(host)) {
+               err = mmc_select_card(card);
+               if (err)
+                       goto free_card;
+       }
 
        if (!oldcard) {
                /*
@@ -562,7 +578,8 @@ static void mmc_sd_suspend(struct mmc_host *host)
        BUG_ON(!host->card);
 
        mmc_claim_host(host);
-       mmc_deselect_cards(host);
+       if (!mmc_host_is_spi(host))
+               mmc_deselect_cards(host);
        host->card->state &= ~MMC_STATE_HIGHSPEED;
        mmc_release_host(host);
 }
@@ -623,6 +640,17 @@ int mmc_attach_sd(struct mmc_host *host, u32 ocr)
        mmc_attach_bus(host, &mmc_sd_ops);
 
        /*
+        * We need to get OCR a different way for SPI.
+        */
+       if (mmc_host_is_spi(host)) {
+               mmc_go_idle(host);
+
+               err = mmc_spi_read_ocr(host, 0, &ocr);
+               if (err)
+                       goto err;
+       }
+
+       /*
         * Sanity check the voltages that the card claims to
         * support.
         */