X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fmmc%2Fcore%2Fsdio.c;h=87a50f456efc080c60fcce98717b780ddc1e9bc6;hb=45ff993d2b0b4c07038457cdf07ecf648abd3d78;hp=1fb36a340468803237224c18012feaa6317af5aa;hpb=1a632f8cdc33e7f8edca352164f0c96a75d08f08;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index 1fb36a34046..87a50f456ef 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -30,7 +30,7 @@ static int sdio_read_fbr(struct sdio_func *func)
 	unsigned char data;
 
 	ret = mmc_io_rw_direct(func->card, 0, 0,
-		func->num * 0x100 + SDIO_FBR_STD_IF, 0, &data);
+		SDIO_FBR_BASE(func->num) + SDIO_FBR_STD_IF, 0, &data);
 	if (ret)
 		goto out;
 
@@ -38,7 +38,7 @@ static int sdio_read_fbr(struct sdio_func *func)
 
 	if (data == 0x0f) {
 		ret = mmc_io_rw_direct(func->card, 0, 0,
-			func->num * 0x100 + SDIO_FBR_STD_IF_EXT, 0, &data);
+			SDIO_FBR_BASE(func->num) + SDIO_FBR_STD_IF_EXT, 0, &data);
 		if (ret)
 			goto out;
 	}
@@ -138,6 +138,32 @@ out:
 	return ret;
 }
 
+static int sdio_enable_wide(struct mmc_card *card)
+{
+	int ret;
+	u8 ctrl;
+
+	if (!(card->host->caps & MMC_CAP_4_BIT_DATA))
+		return 0;
+
+	if (card->cccr.low_speed && !card->cccr.wide_bus)
+		return 0;
+
+	ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_IF, 0, &ctrl);
+	if (ret)
+		return ret;
+
+	ctrl |= SDIO_BUS_WIDTH_4BIT;
+
+	ret = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_IF, ctrl, NULL);
+	if (ret)
+		return ret;
+
+	mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);
+
+	return 0;
+}
+
 /*
  * Host is being removed. Free up the current card.
  */
@@ -204,7 +230,7 @@ int mmc_attach_sdio(struct mmc_host *host, u32 ocr)
 	struct mmc_card *card;
 
 	BUG_ON(!host);
-	BUG_ON(!host->claimed);
+	WARN_ON(!host->claimed);
 
 	mmc_attach_bus(host, &mmc_sdio_ops);
 
@@ -243,6 +269,15 @@ int mmc_attach_sdio(struct mmc_host *host, u32 ocr)
 	if (err)
 		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;
+	}
+
 	/*
 	 * The number of functions on the card is encoded inside
 	 * the ocr.
@@ -264,20 +299,24 @@ int mmc_attach_sdio(struct mmc_host *host, u32 ocr)
 	host->card = card;
 
 	/*
-	 * Set card RCA.
+	 * For native busses:  set card RCA and quit open drain mode.
 	 */
-	err = mmc_send_relative_addr(host, &card->rca);
-	if (err)
-		goto remove;
+	if (!mmc_host_is_spi(host)) {
+		err = mmc_send_relative_addr(host, &card->rca);
+		if (err)
+			goto remove;
 
-	mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
+		mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
+	}
 
 	/*
 	 * Select card, as all following commands rely on that.
 	 */
-	err = mmc_select_card(card);
-	if (err)
-		goto remove;
+	if (!mmc_host_is_spi(host)) {
+		err = mmc_select_card(card);
+		if (err)
+			goto remove;
+	}
 
 	/*
 	 * Read the common registers.
@@ -293,6 +332,19 @@ int mmc_attach_sdio(struct mmc_host *host, u32 ocr)
 	if (err)
 		goto remove;
 
+	/*
+	 * No support for high-speed yet, so just set
+	 * the card's maximum speed.
+	 */
+	mmc_set_clock(host, card->cis.max_dtr);
+
+	/*
+	 * Switch to wider bus (if supported).
+	 */
+	err = sdio_enable_wide(card);
+	if (err)
+		goto remove;
+
 	/*
 	 * Initialize (but don't add) all present functions.
 	 */