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charset=utf-8 Content-transfer-encoding: 7bit X-Mailer: Microsoft Office Outlook 12.0 Thread-index: Ac7aH/uUm1J6MxFOSyaXb4Fx/nx/rAABnFmgDfJZ22A= Content-language: ko X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrBIsWRmVeSWpSXmKPExsVy+t8zY929068FGVw8Y23xYN42NosJl7cz Wky4N5HV4savNlaLI//7GS2Orw13YPNovfSXzePOtT1sHjdeLWTy6NuyitHj8ya5ANYoLpuU 1JzMstQifbsEroyTnwQK+twqzs0waWA8aNHFyMkhIWAi0f1iAwuELSZx4d56ti5GLg4hgWWM Eg/P/GKBKXp1bR4LRGI6o8TaZTegqv4wSvy/vJMJpIpNQEvi75s3zCAJEYHjjBKv+o+BtTML yEpc3H+VEcQWEnCTeNKzhA3E5hTgkVj3p5MZxBYWcJLYteYXWA2LgKrEwUufwYbyCthKrL6w jA3CFpT4Mfke0EwOoJnqElOm5EKMl5fYvOYtM0hYAij86K8uiCkiYCXRNdMQokJEYt+Ld4wg l0kIPGKXmNO1mQVik4DEt8mHWCBaZSU2HWCG+FdS4uCKGywTGCVmIdk7C2HvLCR7ZyHZsICR ZRWjaGpBckFxUnqRoV5xYm5xaV66XnJ+7iZGSKz27mC8fcD6EGMy0PaJzFKiyfnAWM8riTc0 NjOyMDUxNTYytzQjTVhJnDfpYVKQkEB6YklqdmpqQWpRfFFpTmrxIUYmDk6pBsadDt4dBW8n uJ5uEfPre+Zx5ZB5tS/fuYl5Hf+URJ29GrfbvDdmLFge59mmkfb8+F6L8L17M1d/f1ewXmGS uW/F1QtJYR4bDr1yNGA0d9b/aKxffaX20JZFx61KtrmJG3To6LxPuCG4/OXkbwsShd7MSTIM /ygiMUPdctZS162lWbYFgvNv8CixFGckGmoxFxUnAgAHBaWf6wIAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrKKsWRmVeSWpSXmKPExsVy+t9jQd29068FGXSdMbN4MG8bm8WEy9sZ LSbcm8hqceNXG6vFkf/9jBbH14Y7sHm0XvrL5nHn2h42jxuvFjJ59G1ZxejxeZNcAGtUA6NN RmpiSmqRQmpecn5KZl66rZJ3cLxzvKmZgaGuoaWFuZJCXmJuqq2Si0+ArltmDtAFSgpliTml QKGAxOJiJX07TBNCQ9x0LWAaI3R9Q4LgeowM0EDCOsaMk58ECvrcKs7NMGlgPGjRxcjJISFg IvHq2jwWCFtM4sK99WxdjFwcQgLTGSXWLrsB5fxhlPh/eScTSBWbgJbE3zdvmEESIgLHGSVe 9R8Da2cWkJW4uP8qI4gtJOAm8aRnCRuIzSnAI7HuTycziC0s4CSxa80vsBoWAVWJg5c+gw3l FbCVWH1hGRuELSjxY/I9oJkcQDPVJaZMyYUYLy+xec1bZpCwBFD40V9dEFNEwEqia6YhRIWI xL4X7xgnMArNQjJnFsKcWUjmzELSsYCRZRWjaGpBckFxUnquoV5xYm5xaV66XnJ+7iZGcCJ4 JrWDcWWDxSFGAQ5GJR7eH+FXg4RYE8uKK3MPMUpwMCuJ8GrmXgsS4k1JrKxKLcqPLyrNSS0+ xJgM9OVEZinR5HxgksoriTc0NjEzsjQyszAyMTcnTVhJnPdAq3WgkEB6YklqdmpqQWoRzBYm Dk6pBsYNKxZw1z5dpqpTGP9B9tvSW0s4+7/xn3yWu61IQfPmZHVV3bdvtriuzb2a3eOz3iqy +QAfU3awk94TvS8ivM/Wf7vO+Yh3md/CNfZxfQHTv1X/ePj7WGbG7OIUwW8nmHL8bZk/zIj+ kXYq8M9hi/2VUwqLLGPzL0tcsuM8enqzSlv7Hq/3Sg+VWIozEg21mIuKEwEMF1PBSAMAAA== 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=-7.2 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 fb13bf9..86d4572 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 */ @@ -297,7 +296,10 @@ 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 */