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71578a1eaa
This series adds support for SD combo cards to MMC/SD driver stack. SD combo consists of SD memory and SDIO parts in one package. Since the parts have a separate SD command sets, after initialization, they can be treated as independent cards on one bus. Changes are divided into two patches. First is just moving initialization code around so that SD memory part init can be called from SDIO init. Second patch is a proper change enabling SD memory along SDIO. I tried to move as much no-op changes to the first patch so that it's easier to follow the required changes to initialization flow for SDIO cards. This is based on Simplified SDIO spec v.2.00. The init sequence is slightly modified to follow current SD memory init implementation. Command sequences, assuming SD memory and SDIO indeed ignore unknown commands, are the same as before for both parts. This patch: Prepare for SD-combo (IO+mem) support by splitting SD memory card init and related functions. Signed-off-by: Michal Miroslaw <mirq-linux@rere.qmqm.pl> Cc: Adrian Hunter <adrian.hunter@nokia.com> Cc: Chris Ball <cjb@laptop.org> Cc: <linux-mmc@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
18 lines
523 B
C
18 lines
523 B
C
#ifndef _MMC_CORE_SD_H
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#define _MMC_CORE_SD_H
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#include <linux/mmc/card.h>
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extern struct device_type sd_type;
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int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid);
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int mmc_sd_get_csd(struct mmc_host *host, struct mmc_card *card);
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void mmc_decode_cid(struct mmc_card *card);
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int mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card,
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bool reinit);
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unsigned mmc_sd_get_max_clock(struct mmc_card *card);
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int mmc_sd_switch_hs(struct mmc_card *card);
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void mmc_sd_go_highspeed(struct mmc_card *card);
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#endif
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