From patchwork Wed Apr 23 08:07:58 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Seungwon Jeon X-Patchwork-Id: 4039371 Return-Path: X-Original-To: patchwork-linux-mmc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id C3CC09F1F4 for ; Wed, 23 Apr 2014 08:08:26 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 86AD920221 for ; Wed, 23 Apr 2014 08:08:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 119FD2014A for ; Wed, 23 Apr 2014 08:08:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756728AbaDWIIQ (ORCPT ); Wed, 23 Apr 2014 04:08:16 -0400 Received: from mailout4.samsung.com ([203.254.224.34]:21000 "EHLO mailout4.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757453AbaDWIIA (ORCPT ); Wed, 23 Apr 2014 04:08:00 -0400 Received: from epcpsbgr3.samsung.com (u143.gpu120.samsung.co.kr [203.254.230.143]) by mailout4.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0N4H000KK59A4I60@mailout4.samsung.com> for linux-mmc@vger.kernel.org; Wed, 23 Apr 2014 17:07:58 +0900 (KST) Received: from epcpsbgm1.samsung.com ( [203.254.230.50]) by epcpsbgr3.samsung.com (EPCPMTA) with SMTP id A6.D8.11120.ED477535; Wed, 23 Apr 2014 17:07:58 +0900 (KST) X-AuditID: cbfee68f-b7eff6d000002b70-e1-535774de97ec Received: from epmmp2 ( [203.254.227.17]) by epcpsbgm1.samsung.com (EPCPMTA) with SMTP id 5E.30.27725.ED477535; Wed, 23 Apr 2014 17:07:58 +0900 (KST) Received: from DOTGIHJUN01 ([12.36.185.168]) by mmp2.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0N4H009P759ADQ50@mmp2.samsung.com>; Wed, 23 Apr 2014 17:07:58 +0900 (KST) From: Seungwon Jeon To: linux-mmc@vger.kernel.org Cc: 'Chris Ball' , 'Ulf Hansson' , 'Jaehoon Chung' , 'Jackey Shen' , 'Alim Akhtar' , 'Fariya Fatima' , "'John W. Linville'" References: <1383653403-10049-1-git-send-email-ulf.hansson@linaro.org> <006701cf2a58$c628e050$527aa0f0$%jun@samsung.com> In-reply-to: Subject: [PATCH 2/6] mmc: identify available device type to select Date: Wed, 23 Apr 2014 17:07:58 +0900 Message-id: <000b01cf5ecb$2365a630$6a30f290$%jun@samsung.com> MIME-version: 1.0 Content-type: text/plain; charset=UTF-8 Content-transfer-encoding: 7bit X-Mailer: Microsoft Office Outlook 12.0 Thread-index: Ac7aH/uUm1J6MxFOSyaXb4Fx/nx/rAABnFmgDfJZ22AGGfSo8APt897AAVsylFACWLK74AMkkqCgAWQT7DAA8d9+MA== Content-language: ko X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrAIsWRmVeSWpSXmKPExsVy+t8zI917JeHBBtsOylk8mLeNzWLC5e2M Fg2TnrBaTLg3kdXixq82Vosj//sZLbb2SFgcXxvuwOHReukvm8fOWXfZPe5c28PmcePVQiaP vi2rGD2ufF/N6PF5k1wAexSXTUpqTmZZapG+XQJXxuYfd1gLJrtUfJ/Tx9rAOM+8i5GTQ0LA ROLgnS4mCFtM4sK99WxdjFwcQgLLGCWOfj3OBlN07fhCZojEdEaJp5e+QFX9YZTYd/opI0gV m4CWxN83b5hBbBEBWYmffy6AFTELzGWS2LTjHgtIQkigSmLVuW1gRZwCPBLr/nSC2cICThLv L04AG8QioCqx/flRMJtXwFbi/Y+dULagxI/JEHOYBdQlJs1bxAxhy0tsXvMWyOYAOlVd4tFf XYgbciS2b/wNVSIise/FO0aQeyQEfrJLNH28xgqxS0Di2+RDLBC9shKbDjBDfCwpcXDFDZYJ jBKzkGyehWTzLCSbZyFZsYCRZRWjaGpBckFxUnqRsV5xYm5xaV66XnJ+7iZGSGz372C8e8D6 EGMy0PqJzFKiyfnA1JBXEm9obGZkYWpiamxkbmlGmrCSOO/9h0lBQgLpiSWp2ampBalF8UWl OanFhxiZODilGhjXzjqi7al3I3/nyQPBx9wEnhmf47G48vLTvx3n3u4VNZ54TUfku8Lj2mrN HcvNH6QGbXT53/pxr7vZ2ZatcWuvqxeYFy+IPrefmcNysdcV96V5Xxk54g+/KDI8byR4ieOB NHufZVK7bb2wy5tLEf5R/ZuNU3TvlUuLSy44u4rvXtDxlWe/qpcpsRRnJBpqMRcVJwIAL/8N 4AMDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrLKsWRmVeSWpSXmKPExsVy+t9jQd17JeHBBqcXS1o8mLeNzWLC5e2M Fg2TnrBaTLg3kdXixq82Vosj//sZLbb2SFgcXxvuwOHReukvm8fOWXfZPe5c28PmcePVQiaP vi2rGD2ufF/N6PF5k1wAe1QDo01GamJKapFCal5yfkpmXrqtkndwvHO8qZmBoa6hpYW5kkJe Ym6qrZKLT4CuW2YO0FFKCmWJOaVAoYDE4mIlfTtME0JD3HQtYBojdH1DguB6jAzQQMI6xozN P+6wFkx2qfg+p4+1gXGeeRcjJ4eEgInEteMLmSFsMYkL99azdTFycQgJTGeUeHrpC5Tzh1Fi 3+mnjCBVbAJaEn/fvAHrEBGQlfj55wJYEbPAXCaJTTvusYAkhASqJFad2wZWxCnAI7HuTyeY LSzgJPH+4gSwQSwCqhLbnx8Fs3kFbCXe/9gJZQtK/JgMMYdZQF1i0rxFzBC2vMTmNW+BbA6g U9UlHv3VhbghR2L7xt9QJSIS+168Y5zAKDQLyaRZSCbNQjJpFpKWBYwsqxhFUwuSC4qT0nMN 9YoTc4tL89L1kvNzNzGCE8czqR2MKxssDjEKcDAq8fAWrAwLFmJNLCuuzD3EKMHBrCTCO/Mj UIg3JbGyKrUoP76oNCe1+BBjMtCjE5mlRJPzgUktryTe0NjEzMjSyMzCyMTcnDRhJXHeA63W gUIC6YklqdmpqQWpRTBbmDg4pRoYZRStuZaurVYONzNvYpnaf/Di76m513hqj9X/nscr9LPl z52dNbEJ05KtitUTffgqZs3LELv69fYkFrPkLazMNtfEU1OzNvzPDFff5iQ4yXxb5wfTbO1D 7UuKr0yzX3uaJbLg2Pn78tMXm2U2Hv2zNGuT2J80v6ZLpm8ePWNds+v1L13LtW/DlFiKMxIN tZiLihMBmV9FYmADAAA= 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 Tested-by: Jaehoon Chung Acked-by: Jaehoon Chung Signed-off-by: Ulf Hansson Signed-off-by: Chris Ball --- drivers/mmc/core/mmc.c | 72 +++++++++++++++++++++++++--------------------- include/linux/mmc/card.h | 2 +- include/linux/mmc/host.h | 6 ---- include/linux/mmc/mmc.h | 12 +++++-- 4 files changed, 48 insertions(+), 44 deletions(-) diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 3122052..b5691fe 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 (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_SDR_1_8V) || - (caps2 & MMC_CAP2_HS200_1_2V_SDR && - card_type & EXT_CSD_CARD_TYPE_SDR_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; } /* @@ -800,12 +818,10 @@ 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 */ @@ -1064,10 +1080,9 @@ 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, @@ -1081,13 +1096,11 @@ 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); - } } } @@ -1110,14 +1123,8 @@ 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 = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; /* * Indicate HS200 SDR mode (if supported). @@ -1137,8 +1144,7 @@ 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); @@ -1247,7 +1253,7 @@ 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 aadeaf1..fe31f8d 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 */ @@ -298,6 +297,7 @@ struct mmc_card { struct sdio_func_tuple *tuples; /* unknown common tuples */ 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 a438537..6b1e9ee 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 */