Hi Girish.
I just modified the MMC_CAP2_POWEROFF_NOTIFY instead of
MMC_CAP_POWEROFF_NOTIFY.
Regards,
Jaehoon Chung
On 10/04/2011 09:12 PM, Girish K S wrote:
> Dear Mr Chung,
>
> i saw your pull request with poweroff notify feature. did you modify
> anything in the Power Notify feature.
>
> I am preparing the patch with your review comment.
>
> regards
> Girish K S
>
> On 4 October 2011 17:11, Girish K S <girish.shivananjappa@xxxxxxxxxx> wrote:
>> Hello Mr Chung,
>>
>> Since my both patches are dependent on each other. i will generate a
>> patch series of HS200 and Power notify. So that they can be applied
>> sequentially.
>>
>> Will update with your mentioned comment. kindly review it after my release.
>>
>> regards
>> Girish K S
>>
>> On 4 October 2011 16:50, Girish K S <girish.shivananjappa@xxxxxxxxxx> wrote:
>>> Hello Mr Chung,
>>> I got your point. My reply was for your comment on "cannot apply this
>>> patch on mmc-next branch".
>>>
>>> regards
>>> Girish K S
>>>
>>> On 4 October 2011 16:46, Jaehoon Chung <jh80.chung@xxxxxxxxxxx> wrote:
>>>> Hi Girish..
>>>>
>>>> My means if you use host->caps2, i think right that should be define
>>>> MMC_CAP2_XXX.
>>>> Am i wrong?
>>>>
>>>> Best regards,
>>>> Jaehoon Chung
>>>>
>>>> On 10/04/2011 08:03 PM, Girish K S wrote:
>>>>
>>>>> Hello Mr Chung,
>>>>>
>>>>> Kindly apply my HS200 feature patch before this patch. then it will work fine.
>>>>> can you check and let me know if it applies after HS200 patch.
>>>>>
>>>>> If it can be applied i will modify and resend
>>>>> regards
>>>>> Girish K S
>>>>>
>>>>> On 4 October 2011 16:22, Jaehoon Chung <jh80.chung@xxxxxxxxxxx> wrote:
>>>>>> Hi Girish..
>>>>>>
>>>>>> i think this patch didn't base on latest for mmc-next..
>>>>>> i commented the below.
>>>>>>
>>>>>> Regards,
>>>>>> Jaehoon Chung
>>>>>>
>>>>>> On 09/29/2011 07:46 PM, Girish K S wrote:
>>>>>>
>>>>>>> This patch adds the support for power off notify feature
>>>>>>> available in eMMC 4.5 devices.
>>>>>>> If the the host has support for this feature, then the
>>>>>>> mmc core will notify it to the device by setting the
>>>>>>> POWER_OFF_NOTIFICATION byte in the extended csd register
>>>>>>> with a value 1(POWER_ON).
>>>>>>> For suspend mode short timeout is used, whereas for the
>>>>>>> normal poweroff long timeout is used.
>>>>>>> This patch is dependent on Seungwon Jeon's patch for
>>>>>>> CMD6 timeout.
>>>>>>>
>>>>>>> Signed-off-by: Girish K S <girish.shivananjappa@xxxxxxxxxx>
>>>>>>> ---
>>>>>>> Changes in V2:
>>>>>>> Adds poweroff notification handling in suspend/normal
>>>>>>> Changes in V4:
>>>>>>> Updated with review comments of Jeon
>>>>>>> Changes in V5:
>>>>>>> This patch version fixes the problem with power off
>>>>>>> notify function, when called for the first time and
>>>>>>> card is not yet initialised.
>>>>>>> Changes in V6:
>>>>>>> Fixes checkpatch errors. The patches are generated after
>>>>>>> rebasing to chris's mmc-next branch.
>>>>>>> Changes in V7:
>>>>>>> Rebased to chris-mmc/mmc-next branch. merged to patches
>>>>>>> to single patch.
>>>>>>> drivers/mmc/core/core.c | 37 +++++++++++++++++++++++++++++++++++++
>>>>>>> drivers/mmc/core/mmc.c | 22 ++++++++++++++++++++++
>>>>>>> drivers/mmc/host/sdhci.c | 10 ++++++++++
>>>>>>> include/linux/mmc/card.h | 21 +++++++++++++++++++++
>>>>>>> include/linux/mmc/host.h | 5 +++++
>>>>>>> include/linux/mmc/mmc.h | 6 ++++++
>>>>>>> 6 files changed, 101 insertions(+), 0 deletions(-)
>>>>>>>
>>>>>>> diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
>>>>>>> index 9698d8a..5fb2120 100644
>>>>>>> --- a/drivers/mmc/core/core.c
>>>>>>> +++ b/drivers/mmc/core/core.c
>>>>>>> @@ -1198,11 +1198,46 @@ static void mmc_power_up(struct mmc_host *host)
>>>>>>>
>>>>>>> void mmc_power_off(struct mmc_host *host)
>>>>>>> {
>>>>>>> + struct mmc_card *card;
>>>>>>> + unsigned int notify_type;
>>>>>>> + unsigned int timeout;
>>>>>>> + int err;
>>>>>>> +
>>>>>>> + BUG_ON(!host);
>>>>>>> +
>>>>>>> mmc_host_clk_hold(host);
>>>>>>>
>>>>>>> + card = host->card;
>>>>>>> host->ios.clock = 0;
>>>>>>> host->ios.vdd = 0;
>>>>>>>
>>>>>>> + if (card != NULL && mmc_card_mmc(card) &&
>>>>>>> + (mmc_card_powernotify_on(card))) {
>>>>>>> +
>>>>>>> + if (host->power_notify_type == MMC_HOST_PW_NOTIFY_SHORT) {
>>>>>>> + notify_type = EXT_CSD_POWER_OFF_SHORT;
>>>>>>> + timeout = card->ext_csd.generic_cmd6_time;
>>>>>>> + mmc_card_set_powernotify_short(card);
>>>>>>> + } else {
>>>>>>> + notify_type = EXT_CSD_POWER_OFF_LONG;
>>>>>>> + timeout = card->ext_csd.power_off_longtime;
>>>>>>> + mmc_card_set_powernotify_long(card);
>>>>>>> + }
>>>>>>> +
>>>>>>> + err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
>>>>>>> + EXT_CSD_POWER_OFF_NOTIFICATION,
>>>>>>> + notify_type, timeout);
>>>>>>> +
>>>>>>> + if (err && err != -EBADMSG)
>>>>>>> + pr_err("Device failed to respond "
>>>>>>> + "within %d poweroff time."
>>>>>>> + "forcefully powering down"
>>>>>>> + "the device\n", timeout);
>>>>>>> +
>>>>>>> + /* Set the card state to no notification after the poweroff */
>>>>>>> + mmc_card_set_powernotify_off(card);
>>>>>>> + }
>>>>>>> +
>>>>>>> /*
>>>>>>> * Reset ocr mask to be the highest possible voltage supported for
>>>>>>> * this mmc host. This value will be used at next power up.
>>>>>>> @@ -2194,6 +2230,7 @@ int mmc_pm_notify(struct notifier_block *notify_block,
>>>>>>>
>>>>>>> spin_lock_irqsave(&host->lock, flags);
>>>>>>> host->rescan_disable = 1;
>>>>>>> + host->power_notify_type = MMC_HOST_PW_NOTIFY_SHORT;
>>>>>>> spin_unlock_irqrestore(&host->lock, flags);
>>>>>>> cancel_delayed_work_sync(&host->detect);
>>>>>>>
>>>>>>> @@ -2217,6 +2254,7 @@ int mmc_pm_notify(struct notifier_block *notify_block,
>>>>>>>
>>>>>>> spin_lock_irqsave(&host->lock, flags);
>>>>>>> host->rescan_disable = 0;
>>>>>>> + host->power_notify_type = MMC_HOST_PW_NOTIFY_LONG;
>>>>>>> spin_unlock_irqrestore(&host->lock, flags);
>>>>>>> mmc_detect_change(host, 0);
>>>>>>>
>>>>>>> diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
>>>>>>> index f28aa4f..25ba7f5 100644
>>>>>>> --- a/drivers/mmc/core/mmc.c
>>>>>>> +++ b/drivers/mmc/core/mmc.c
>>>>>>> @@ -447,6 +447,11 @@ 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.power_off_longtime = 10 *
>>>>>>> + ext_csd[EXT_CSD_POWER_OFF_LONG_TIME];
>>>>>>> + }
>>>>>>> +
>>>>>>> out:
>>>>>>> return err;
>>>>>>> }
>>>>>>> @@ -829,6 +834,23 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
>>>>>>> }
>>>>>>>
>>>>>>> /*
>>>>>>> + * If the host supports the power_off_notify capability then
>>>>>>> + * set the notification byte in the ext_csd register of device
>>>>>>> + */
>>>>>>> + if (host->caps2 & MMC_CAP_POWEROFF_NOTIFY &&
>>>>>>> + (mmc_card_powernotify_off(card))) {
>>>>>>> + err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
>>>>>>> + EXT_CSD_POWER_OFF_NOTIFICATION,
>>>>>>> + EXT_CSD_POWER_ON,
>>>>>>> + card->ext_csd.generic_cmd6_time);
>>>>>>> + if (err && err != -EBADMSG)
>>>>>>> + goto free_card;
>>>>>>> + }
>>>>>>> +
>>>>>>
>>>>>>
>>>>>> you used host->caps2, i think right that should be use
>>>>>> MMC_CAP2_POWEROFF_NOTIFY.
>>>>>>
>>>>>>> + if (!err)
>>>>>>> + mmc_card_set_powernotify_on(card);
>>>>>>> +
>>>>>>> + /*
>>>>>>> * Activate high speed (if supported)
>>>>>>> */
>>>>>>> if (card->ext_csd.hs_max_dtr != 0) {
>>>>>>> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
>>>>>>> index 4220133..2818238 100644
>>>>>>> --- a/drivers/mmc/host/sdhci.c
>>>>>>> +++ b/drivers/mmc/host/sdhci.c
>>>>>>> @@ -2599,6 +2599,16 @@ int sdhci_add_host(struct sdhci_host *host)
>>>>>>> if (caps[1] & SDHCI_DRIVER_TYPE_D)
>>>>>>> mmc->caps |= MMC_CAP_DRIVER_TYPE_D;
>>>>>>>
>>>>>>> + /*
>>>>>>> + * If Notify capability is enabled and
>>>>>>> + * notify type is not initialised by host, set default to
>>>>>>> + * long power off notify timeout value
>>>>>>> + */
>>>>>>> + if (mmc->caps2 & MMC_CAP_POWEROFF_NOTIFY)
>>>>>>> + mmc->power_notify_type = MMC_HOST_PW_NOTIFY_SHORT;
>>>>>>> + else
>>>>>>> + mmc->power_notify_type = MMC_HOST_PW_NOTIFY_NONE;
>>>>>>> +
>>>>>>
>>>>>>
>>>>>> also here...
>>>>>>
>>>>>>> /* Initial value for re-tuning timer count */
>>>>>>> host->tuning_count = (caps[1] & SDHCI_RETUNING_TIMER_COUNT_MASK) >>
>>>>>>> SDHCI_RETUNING_TIMER_COUNT_SHIFT;
>>>>>>> diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
>>>>>>> index 15e5ce2..d6f8c85 100644
>>>>>>> --- a/include/linux/mmc/card.h
>>>>>>> +++ b/include/linux/mmc/card.h
>>>>>>> @@ -53,6 +53,8 @@ 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 power_off_longtime; /* Units: ms */
>>>>>>> unsigned int hs_max_dtr;
>>>>>>> unsigned int sectors;
>>>>>>> unsigned int card_type;
>>>>>>> @@ -192,6 +194,11 @@ struct mmc_card {
>>>>>>> #define MMC_QUIRK_BLK_NO_CMD23 (1<<7) /* Avoid CMD23 for regular multiblock */
>>>>>>> #define MMC_QUIRK_BROKEN_BYTE_MODE_512 (1<<8) /* Avoid sending 512 bytes in */
>>>>>>> /* byte mode */
>>>>>>> + unsigned int poweroff_notify_state; /* eMMC4.5 notify feature */
>>>>>>> +#define MMC_NO_POWER_NOTIFICATION 0
>>>>>>> +#define MMC_POWERED_ON 1
>>>>>>> +#define MMC_POWEROFF_SHORT 2
>>>>>>> +#define MMC_POWEROFF_LONG 3
>>>>>>>
>>>>>>> unsigned int erase_size; /* erase size in sectors */
>>>>>>> unsigned int erase_shift; /* if erase unit is power 2 */
>>>>>>> @@ -329,6 +336,20 @@ static inline void __maybe_unused remove_quirk(struct mmc_card *card, int data)
>>>>>>> #define mmc_sd_card_set_uhs(c) ((c)->state |= MMC_STATE_ULTRAHIGHSPEED)
>>>>>>> #define mmc_card_set_ext_capacity(c) ((c)->state |= MMC_CARD_SDXC)
>>>>>>>
>>>>>>> +#define mmc_card_powernotify_on(c) \
>>>>>>> + ((c)->poweroff_notify_state == MMC_POWERED_ON)
>>>>>>> +#define mmc_card_powernotify_off(c) \
>>>>>>> + ((c)->poweroff_notify_state == MMC_NO_POWER_NOTIFICATION)
>>>>>>> +
>>>>>>> +#define mmc_card_set_powernotify_off(c) \
>>>>>>> + ((c)->poweroff_notify_state = MMC_NO_POWER_NOTIFICATION)
>>>>>>> +#define mmc_card_set_powernotify_on(c) \
>>>>>>> + ((c)->poweroff_notify_state = MMC_POWERED_ON)
>>>>>>> +#define mmc_card_set_powernotify_short(c) \
>>>>>>> + ((c)->poweroff_notify_state = MMC_POWEROFF_SHORT)
>>>>>>> +#define mmc_card_set_powernotify_long(c) \
>>>>>>> + ((c)->poweroff_notify_state = MMC_POWEROFF_LONG)
>>>>>>> +
>>>>>>> /*
>>>>>>> * Quirk add/remove for MMC products.
>>>>>>> */
>>>>>>> diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
>>>>>>> index f62ffa2..b711a00 100644
>>>>>>> --- a/include/linux/mmc/host.h
>>>>>>> +++ b/include/linux/mmc/host.h
>>>>>>> @@ -245,8 +245,13 @@ struct mmc_host {
>>>>>>> #define MMC_CAP_HS200_1_8V_SDR (1 << 2) /* can support */
>>>>>>> #define MMC_CAP_HS200_1_2V_SDR (1 << 3) /* can support */
>>>>>>> #define MMC_CAP_HIGHSPEED_200 (1 << 4) /* Can do MMC HS200 timing */
>>>>>>> +#define MMC_CAP_POWEROFF_NOTIFY (1 << 31) /* Notify poweroff supported */
>>>>>>>
>>>>>>> mmc_pm_flag_t pm_caps; /* supported pm features */
>>>>>>> + unsigned int power_notify_type;
>>>>>>> +#define MMC_HOST_PW_NOTIFY_NONE 0
>>>>>>> +#define MMC_HOST_PW_NOTIFY_SHORT 1
>>>>>>> +#define MMC_HOST_PW_NOTIFY_LONG 2
>>>>>>>
>>>>>>> #ifdef CONFIG_MMC_CLKGATE
>>>>>>> int clk_requests; /* internal reference counter */
>>>>>>> diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
>>>>>>> index 3f2e210..944c99b 100644
>>>>>>> --- a/include/linux/mmc/mmc.h
>>>>>>> +++ b/include/linux/mmc/mmc.h
>>>>>>> @@ -271,6 +271,7 @@ struct _mmc_csd {
>>>>>>> * EXT_CSD fields
>>>>>>> */
>>>>>>>
>>>>>>> +#define EXT_CSD_POWER_OFF_NOTIFICATION 34 /* R/W */
>>>>>>> #define EXT_CSD_PARTITION_ATTRIBUTE 156 /* R/W */
>>>>>>> #define EXT_CSD_PARTITION_SUPPORT 160 /* RO */
>>>>>>> #define EXT_CSD_RST_N_FUNCTION 162 /* R/W */
>>>>>>> @@ -348,6 +349,11 @@ struct _mmc_csd {
>>>>>>> #define EXT_CSD_RST_N_EN_MASK 0x3
>>>>>>> #define EXT_CSD_RST_N_ENABLED 1 /* RST_n is enabled on card */
>>>>>>>
>>>>>>> +#define EXT_CSD_NO_POWER_NOTIFICATION 0
>>>>>>> +#define EXT_CSD_POWER_ON 1
>>>>>>> +#define EXT_CSD_POWER_OFF_SHORT 2
>>>>>>> +#define EXT_CSD_POWER_OFF_LONG 3
>>>>>>> +
>>>>>>> #define EXT_CSD_PWR_CL_8BIT_MASK 0xF0 /* 8 bit PWR CLS */
>>>>>>> #define EXT_CSD_PWR_CL_4BIT_MASK 0x0F /* 8 bit PWR CLS */
>>>>>>> #define EXT_CSD_PWR_CL_8BIT_SHIFT 4
>>>>>>
>>>>>>
>>>>>>
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>>>>
>>>>
>>>>
>>>
>>
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