Hi Mr.Jeon
I known this patch is committed for mmc-next.
Maybe you need to send only the patch for power-class.
Thanks,
Jaehoon Chung
On 10/17/2011 08:45 AM, Seungwon Jeon wrote:
> This mail is a duplicate from our security machine.
> V5 of related patch has already submitted.
> Please ignore this resending.
> I think that it was unfortunate.
>
> Seungwon Jeon.
>
>> EXT_CSD[248] includes the default maximum timeout for CMD6.
>> This field is added at eMMC4.5 Spec. And it can be used for default
>> timeout except for some operations which don't define the timeout(i.e.
>> background operation, sanitize, flush cache) in eMMC4.5 Spec.
>>
>> Signed-off-by: Seungwon Jeon <tgih.jun@xxxxxxxxxxx>
>> ---
>> drivers/mmc/core/mmc.c | 18 +++++++++++++-----
>> include/linux/mmc/card.h | 1 +
>> include/linux/mmc/mmc.h | 1 +
>> 3 files changed, 15 insertions(+), 5 deletions(-)
>>
>> diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
>> index c632b1f..c37b8d2 100644
>> --- a/drivers/mmc/core/mmc.c
>> +++ b/drivers/mmc/core/mmc.c
>> @@ -414,6 +414,12 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8
>> *ext_csd)
>> else
>> card->erased_byte = 0x0;
>>
>> + if (card->ext_csd.rev >= 6)
>> + card->ext_csd.generic_cmd6_time = 10 *
>> + ext_csd[EXT_CSD_GENERIC_CMD6_TIME];
>> + else
>> + card->ext_csd.generic_cmd6_time = 0;
>> +
>> out:
>> return err;
>> }
>> @@ -607,7 +613,7 @@ static int mmc_select_powerclass(struct mmc_card *card,
>> err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
>> EXT_CSD_POWER_CLASS,
>> pwrclass_val,
>> - 0);
>> + card->ext_csd.generic_cmd6_time);
>> }
>>
>> return err;
>> @@ -757,7 +763,8 @@ static int mmc_init_card(struct mmc_host *host, u32
>> ocr,
>> */
>> if (card->ext_csd.enhanced_area_en) {
>> err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
>> - EXT_CSD_ERASE_GROUP_DEF, 1, 0);
>> + EXT_CSD_ERASE_GROUP_DEF, 1,
>> + card->ext_csd.generic_cmd6_time);
>>
>> if (err && err != -EBADMSG)
>> goto free_card;
>> @@ -800,7 +807,8 @@ static int mmc_init_card(struct mmc_host *host, u32
>> ocr,
>> if ((card->ext_csd.hs_max_dtr != 0) &&
>> (host->caps & MMC_CAP_MMC_HIGHSPEED)) {
>> err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
>> - EXT_CSD_HS_TIMING, 1, 0);
>> + EXT_CSD_HS_TIMING, 1,
>> + card->ext_csd.generic_cmd6_time);
>> if (err && err != -EBADMSG)
>> goto free_card;
>>
>> @@ -880,7 +888,7 @@ static int mmc_init_card(struct mmc_host *host, u32
>> ocr,
>> err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
>> EXT_CSD_BUS_WIDTH,
>> ext_csd_bits[idx][0],
>> - 0);
>> + card->ext_csd.generic_cmd6_time);
>> if (!err) {
>> mmc_set_bus_width(card->host, bus_width);
>>
>> @@ -911,7 +919,7 @@ static int mmc_init_card(struct mmc_host *host, u32
>> ocr,
>> err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
>> EXT_CSD_BUS_WIDTH,
>> ext_csd_bits[idx][1],
>> - 0);
>> + card->ext_csd.generic_cmd6_time);
>> }
>> if (err) {
>> printk(KERN_WARNING "%s: switch to bus width %d ddr %d
>> "
>> diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
>> index 5294ddf..d751ceb 100644
>> --- a/include/linux/mmc/card.h
>> +++ b/include/linux/mmc/card.h
>> @@ -53,6 +53,7 @@ struct mmc_ext_csd {
>> u8 rst_n_function;
>> unsigned int part_time; /* Units: ms */
>> unsigned int sa_timeout; /* Units: 100ns */
>> + unsigned int generic_cmd6_time; /* Units: ms */
>> unsigned int hs_max_dtr;
>> unsigned int sectors;
>> unsigned int card_type;
>> diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
>> index 50af227..b26c9e4 100644
>> --- a/include/linux/mmc/mmc.h
>> +++ b/include/linux/mmc/mmc.h
>> @@ -304,6 +304,7 @@ struct _mmc_csd {
>> #define EXT_CSD_PWR_CL_DDR_52_195 238 /* RO */
>> #define EXT_CSD_PWR_CL_DDR_52_360 239 /* RO */
>> #define EXT_CSD_POWER_OFF_LONG_TIME 247 /* RO */
>> +#define EXT_CSD_GENERIC_CMD6_TIME 248 /* RO */
>>
>> /*
>> * EXT_CSD field definitions
>> --
>> 1.7.0.4
>>
>> --
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