From patchwork Sat Feb 15 14:18:49 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Seungwon Jeon X-Patchwork-Id: 3656491 Return-Path: X-Original-To: patchwork-linux-mmc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 01214BF13A for ; Sat, 15 Feb 2014 14:18:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D9F5420213 for ; Sat, 15 Feb 2014 14:18:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 939FC20212 for ; Sat, 15 Feb 2014 14:18:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753238AbaBOOSv (ORCPT ); Sat, 15 Feb 2014 09:18:51 -0500 Received: from mailout2.samsung.com ([203.254.224.25]:44667 "EHLO mailout2.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753153AbaBOOSu (ORCPT ); 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charset=utf-8 Content-transfer-encoding: 7bit X-Mailer: Microsoft Office Outlook 12.0 Thread-index: Ac7aH/uUm1J6MxFOSyaXb4Fx/nx/rAABnFmgDfJZ22AGGhe9UA== Content-language: ko X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrFIsWRmVeSWpSXmKPExsVy+t8zQ12P8v9BBs2t5hYP5m1js5hweTuj xYR7E1ktbvxqY7U48r+f0eL42nAHNo/WS3/ZPO5c28PmcePVQiaPvi2rGD0+b5ILYI3isklJ zcksSy3St0vgyvjfPYm5oM+tYnFLaQPjQYsuRk4OCQETiUkbn7BC2GISF+6tZ+ti5OIQEljG KLH5119mmKJPB3pZIRKLGCXW3u5ggXD+MEq8ePSWBaSKTUBL4u+bN2AdIgKyEj//XAAbxSxw nFHi2pYDYEVCAm4ST3qWsIHYnAI8Euv+dII1CAt4Six5cxyshkVAVeLJ/ceMIDavgK3EseMX mSFsQYkfk+8B1XAADVWXmDIlFyTMLCAvsXnNW2aQsARQ+NFfXYgTnCT+3LjMDFEiIrHvxTtG kHMkBF6yS6zd3sYMsUpA4tvkQywQvbISmw5APSwpcXDFDZYJjBKzkCyehbB4FpLFs5BsWMDI sopRNLUguaA4Kb3IUK84Mbe4NC9dLzk/dxMjJF57dzDePmB9iDEZaPtEZinR5HxgvOeVxBsa mxlZmJqYGhuZW5qRJqwkzpv0MClISCA9sSQ1OzW1ILUovqg0J7X4ECMTB6dUA6No9jpft/cK WgVlVZlubRdsXTIVZrpsT8lf/FVhz/aE3RO2qEte1JRidTZkC9j7/cv+KMeT7FKP353O6TwW OLOomc8osmf17Lunw20ntDRcLb4tHsQSdj+l95L/lNw9UZFvd21IW/9krYhzbt/S7SptE54Z aS5y/PZaQ8Zlwfr0MLn37gfiDiqxFGckGmoxFxUnAgA/j+bd7QIAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrOKsWRmVeSWpSXmKPExsVy+t9jAV2P8v9BBn+6jCwezNvGZjHh8nZG iwn3JrJa3PjVxmpx5H8/o8XxteEObB6tl/6yedy5tofN48arhUwefVtWMXp83iQXwBrVwGiT kZqYklqkkJqXnJ+SmZduq+QdHO8cb2pmYKhraGlhrqSQl5ibaqvk4hOg65aZA3SBkkJZYk4p UCggsbhYSd8O04TQEDddC5jGCF3fkCC4HiMDNJCwjjHjf/ck5oI+t4rFLaUNjActuhg5OSQE TCQ+HehlhbDFJC7cW8/WxcjFISSwiFFi7e0OFgjnD6PEi0dvWUCq2AS0JP6+ecMMYosIyEr8 /HMBrINZ4DijxLUtB8CKhATcJJ70LGEDsTkFeCTW/ekEaxAW8JRY8uY4WA2LgKrEk/uPGUFs XgFbiWPHLzJD2IISPybfA6rhABqqLjFlSi5ImFlAXmLzmrfMIGEJoPCjv7oQJzhJ/LlxmRmi RERi34t3jBMYhWYhGTQLYdAsJINmIelYwMiyilE0tSC5oDgpPddIrzgxt7g0L10vOT93EyM4 GTyT3sG4qsHiEKMAB6MSD6+E7r8gIdbEsuLK3EOMEhzMSiK8YQn/g4R4UxIrq1KL8uOLSnNS iw8xJgO9OZFZSjQ5H5io8kriDY1NzIwsjcwsjEzMzUkTVhLnPdhqHSgkkJ5YkpqdmlqQWgSz hYmDU6qBcap/rvXzzJXeGtYnbt07+Xz7a7H4Bana3K+m8KSIn3p07/THR6WzpW7Yt1ccWO7M fPtVQa+5ndeb3bez52Y8X3r93ulFtpbvDqpvPsH6y/rVlOn63MlblpauPcdh8F4wY59nrcik GwpuU/hNrFIvXdg7w4Jp/2Nt64KqX2uPLQ+eI7xo/U+Gm+1KLMUZiYZazEXFiQBxiTlqSgMA AA== DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Device types which are supported by both host and device can be identified when EXT_CSD is read. There is no need to check host's capability anymore. Signed-off-by: Seungwon Jeon --- drivers/mmc/core/mmc.c | 77 ++++++++++++++++++++++++++------------------- include/linux/mmc/card.h | 6 ++- include/linux/mmc/host.h | 6 --- include/linux/mmc/mmc.h | 12 +++++-- 4 files changed, 56 insertions(+), 45 deletions(-) diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 613e641..1ea155a 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -243,28 +243,46 @@ static void mmc_select_card_type(struct mmc_card *card) u8 card_type = card->ext_csd.raw_card_type & EXT_CSD_CARD_TYPE_MASK; u32 caps = host->caps, caps2 = host->caps2; unsigned int hs_max_dtr = 0; + unsigned int avail_type = 0; - if (card_type & EXT_CSD_CARD_TYPE_26) + if (caps & MMC_CAP_MMC_HIGHSPEED && + card_type & EXT_CSD_CARD_TYPE_HS_26) { hs_max_dtr = MMC_HIGH_26_MAX_DTR; + avail_type |= EXT_CSD_CARD_TYPE_HS_26; + } if (caps & MMC_CAP_MMC_HIGHSPEED && - card_type & EXT_CSD_CARD_TYPE_52) + card_type & EXT_CSD_CARD_TYPE_HS_52) { hs_max_dtr = MMC_HIGH_52_MAX_DTR; + avail_type |= EXT_CSD_CARD_TYPE_HS_52; + } - if ((caps & MMC_CAP_1_8V_DDR && - card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) || - (caps & MMC_CAP_1_2V_DDR && - card_type & EXT_CSD_CARD_TYPE_DDR_1_2V)) + if (caps & MMC_CAP_1_8V_DDR && + card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; + avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; + } - if ((caps2 & MMC_CAP2_HS200_1_8V_SDR && - card_type & EXT_CSD_CARD_TYPE_SDR_1_8V) || - (caps2 & MMC_CAP2_HS200_1_2V_SDR && - card_type & EXT_CSD_CARD_TYPE_SDR_1_2V)) + if (caps & MMC_CAP_1_2V_DDR && + card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { + hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; + avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; + } + + if (caps2 & MMC_CAP2_HS200_1_8V_SDR && + card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { hs_max_dtr = MMC_HS200_MAX_DTR; + avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; + } + + if (caps2 & MMC_CAP2_HS200_1_2V_SDR && + card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { + hs_max_dtr = MMC_HS200_MAX_DTR; + avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; + } card->ext_csd.hs_max_dtr = hs_max_dtr; - card->ext_csd.card_type = card_type; + card->mmc_avail_type = avail_type; } /* @@ -708,6 +726,11 @@ static struct device_type mmc_type = { .groups = mmc_attr_groups, }; +static inline unsigned int mmc_snoop_ddr(struct mmc_card *card) +{ + return card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; +} + /* * Select the PowerClass for the current bus width * If power class is defined for 4/8 bit bus in the @@ -808,12 +831,10 @@ static int mmc_select_hs200(struct mmc_card *card) host = card->host; - if (card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_2V && - host->caps2 & MMC_CAP2_HS200_1_2V_SDR) + if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); - if (err && card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_8V && - host->caps2 & MMC_CAP2_HS200_1_8V_SDR) + if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); /* If fails try again during next card power cycle */ @@ -1070,10 +1091,9 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, */ if (card->ext_csd.hs_max_dtr != 0) { err = 0; - if (card->ext_csd.hs_max_dtr > 52000000 && - host->caps2 & MMC_CAP2_HS200) + if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) err = mmc_select_hs200(card); - else if (host->caps & MMC_CAP_MMC_HIGHSPEED) + else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1, card->ext_csd.generic_cmd6_time); @@ -1086,13 +1106,11 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, mmc_hostname(card->host)); err = 0; } else { - if (card->ext_csd.hs_max_dtr > 52000000 && - host->caps2 & MMC_CAP2_HS200) { + if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) mmc_set_timing(card->host, MMC_TIMING_MMC_HS200); - } else { + else mmc_set_timing(card->host, MMC_TIMING_MMC_HS); - } } } @@ -1115,14 +1133,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, /* * Indicate DDR mode (if supported). */ - if (mmc_card_hs(card)) { - if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) - && (host->caps & MMC_CAP_1_8V_DDR)) - ddr = MMC_1_8V_DDR_MODE; - else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) - && (host->caps & MMC_CAP_1_2V_DDR)) - ddr = MMC_1_2V_DDR_MODE; - } + if (mmc_card_hs(card)) + ddr = mmc_snoop_ddr(card); /* * Indicate HS200 SDR mode (if supported). @@ -1142,8 +1154,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, * 3. set the clock to > 52Mhz <=200MHz and * 4. execute tuning for HS200 */ - if ((host->caps2 & MMC_CAP2_HS200) && - card->host->ops->execute_tuning) { + if (card->host->ops->execute_tuning) { mmc_host_clk_hold(card->host); err = card->host->ops->execute_tuning(card->host, MMC_SEND_TUNING_BLOCK_HS200); @@ -1252,7 +1263,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, * * WARNING: eMMC rules are NOT the same as SD DDR */ - if (ddr == MMC_1_2V_DDR_MODE) { + if (ddr & EXT_CSD_CARD_TYPE_DDR_1_2V) { err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); if (err) diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index e6ce178..c1ded09 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -68,7 +68,6 @@ struct mmc_ext_csd { #define MMC_HIGH_DDR_MAX_DTR 52000000 #define MMC_HS200_MAX_DTR 200000000 unsigned int sectors; - unsigned int card_type; unsigned int hc_erase_size; /* In sectors */ unsigned int hc_erase_timeout; /* In milliseconds */ unsigned int sec_trim_mult; /* Secure trim multiplier */ @@ -298,7 +297,10 @@ struct mmc_card { const char **info; /* info strings */ struct sdio_func_tuple *tuples; /* unknown common tuples */ - unsigned int sd_bus_speed; /* Bus Speed Mode set for the card */ + union { + unsigned int sd_bus_speed; /* Bus Speed Mode set for the card */ + unsigned int mmc_avail_type; /* supported device type by both host and card */ + }; struct dentry *debugfs_root; struct mmc_part part[MMC_NUM_PHY_PARTITION]; /* physical partitions */ diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 71977f4..66e632c 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -62,12 +62,6 @@ struct mmc_ios { #define MMC_TIMING_MMC_DDR52 8 #define MMC_TIMING_MMC_HS200 9 -#define MMC_SDR_MODE 0 -#define MMC_1_2V_DDR_MODE 1 -#define MMC_1_8V_DDR_MODE 2 -#define MMC_1_2V_SDR_MODE 3 -#define MMC_1_8V_SDR_MODE 4 - unsigned char signal_voltage; /* signalling voltage (1.8V or 3.3V) */ #define MMC_SIGNAL_VOLTAGE_330 0 diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index 50bcde3..f734c0c 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -354,18 +354,22 @@ struct _mmc_csd { #define EXT_CSD_CMD_SET_SECURE (1<<1) #define EXT_CSD_CMD_SET_CPSECURE (1<<2) -#define EXT_CSD_CARD_TYPE_26 (1<<0) /* Card can run at 26MHz */ -#define EXT_CSD_CARD_TYPE_52 (1<<1) /* Card can run at 52MHz */ #define EXT_CSD_CARD_TYPE_MASK 0x3F /* Mask out reserved bits */ +#define EXT_CSD_CARD_TYPE_HS_26 (1<<0) /* Card can run at 26MHz */ +#define EXT_CSD_CARD_TYPE_HS_52 (1<<1) /* Card can run at 52MHz */ +#define EXT_CSD_CARD_TYPE_HS (EXT_CSD_CARD_TYPE_HS_26 | \ + EXT_CSD_CARD_TYPE_HS_52) #define EXT_CSD_CARD_TYPE_DDR_1_8V (1<<2) /* Card can run at 52MHz */ /* DDR mode @1.8V or 3V I/O */ #define EXT_CSD_CARD_TYPE_DDR_1_2V (1<<3) /* Card can run at 52MHz */ /* DDR mode @1.2V I/O */ #define EXT_CSD_CARD_TYPE_DDR_52 (EXT_CSD_CARD_TYPE_DDR_1_8V \ | EXT_CSD_CARD_TYPE_DDR_1_2V) -#define EXT_CSD_CARD_TYPE_SDR_1_8V (1<<4) /* Card can run at 200MHz */ -#define EXT_CSD_CARD_TYPE_SDR_1_2V (1<<5) /* Card can run at 200MHz */ +#define EXT_CSD_CARD_TYPE_HS200_1_8V (1<<4) /* Card can run at 200MHz */ +#define EXT_CSD_CARD_TYPE_HS200_1_2V (1<<5) /* Card can run at 200MHz */ /* SDR mode @1.2V I/O */ +#define EXT_CSD_CARD_TYPE_HS200 (EXT_CSD_CARD_TYPE_HS200_1_8V | \ + EXT_CSD_CARD_TYPE_HS200_1_2V) #define EXT_CSD_BUS_WIDTH_1 0 /* Card is in 1 bit mode */ #define EXT_CSD_BUS_WIDTH_4 1 /* Card is in 4 bit mode */