mmc: core: Fixup broken suspend and eMMC4.5 power off notify
This patch fixes up the broken suspend sequence for eMMC with sleep
support. Additionally it reworks the eMMC4.5 Power Off Notification
feature so it fits together with the existing sleep feature.
The CMD0 based re-initialization of the eMMC at resume is re-introduced
to maintain compatiblity for devices using sleep.
A host shall use MMC_CAP2_POWEROFF_NOTIFY to enable the Power Off
Notification feature. We might be able to remove this cap later on,
if we think that Power Off Notification always is preferred over
sleep, even if the host is not able to cut the eMMC VCCQ power.
[merez@codeaurora.org: resolved various merge conflicts.
Fix in mmc_resume already exists]
(cherry picked from commit cec02a451276a70cdeb0576ec89d6b5b76e4e18b)
Change-Id: I4f29c213d745dcb1ec50b34b535657328042b4b2
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Saugata Das <saugata.das@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Tatyana Brokhman <tlinder@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
(cherry picked from commit 91cf2698afab3f0707f739a02eb639205798f1dc)
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 19efece..8b6b0c1 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -60,6 +60,7 @@
unsigned int sa_timeout; /* Units: 100ns */
unsigned int generic_cmd6_time; /* Units: 10ms */
unsigned int power_off_longtime; /* Units: ms */
+ u8 power_off_notification; /* state */
unsigned int hs_max_dtr;
#define MMC_HIGH_26_MAX_DTR 26000000
#define MMC_HIGH_52_MAX_DTR 52000000
@@ -294,7 +295,6 @@
#define MMC_CARD_SDXC (1<<6) /* card is SDXC */
#define MMC_CARD_REMOVED (1<<7) /* card has been removed */
#define MMC_STATE_HIGHSPEED_200 (1<<8) /* card is in HS200 mode */
-#define MMC_STATE_SLEEP (1<<9) /* card is in sleep state */
#define MMC_STATE_DOING_BKOPS (1<<10) /* card is doing BKOPS */
unsigned int quirks; /* card quirks */
#define MMC_QUIRK_LENIENT_FN0 (1<<0) /* allow SDIO FN0 writes outside of the VS CCCR range */
@@ -311,11 +311,6 @@
#define MMC_QUIRK_LONG_READ_TIME (1<<9) /* Data read time > CSD says */
/* byte mode */
#define MMC_QUIRK_INAND_DATA_TIMEOUT (1<<8) /* For incorrect data timeout */
- 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 */
@@ -471,7 +466,6 @@
#define mmc_sd_card_uhs(c) ((c)->state & MMC_STATE_ULTRAHIGHSPEED)
#define mmc_card_ext_capacity(c) ((c)->state & MMC_CARD_SDXC)
#define mmc_card_removed(c) ((c) && ((c)->state & MMC_CARD_REMOVED))
-#define mmc_card_is_sleep(c) ((c)->state & MMC_STATE_SLEEP)
#define mmc_card_doing_bkops(c) ((c)->state & MMC_STATE_DOING_BKOPS)
#define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT)
@@ -484,11 +478,9 @@
#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_set_removed(c) ((c)->state |= MMC_CARD_REMOVED)
-#define mmc_card_set_sleep(c) ((c)->state |= MMC_STATE_SLEEP)
#define mmc_card_set_doing_bkops(c) ((c)->state |= MMC_STATE_DOING_BKOPS)
-
#define mmc_card_clr_doing_bkops(c) ((c)->state &= ~MMC_STATE_DOING_BKOPS)
-#define mmc_card_clr_sleep(c) ((c)->state &= ~MMC_STATE_SLEEP)
+
/*
* Quirk add/remove for MMC products.
*/
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 8f0a756..f435221 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -251,10 +251,6 @@
#define MMC_CAP2_SANITIZE (1 << 13) /* Support Sanitize */
#define MMC_CAP2_INIT_BKOPS (1 << 15) /* Need to set BKOPS_EN */
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
int clk_requests; /* internal reference counter */
unsigned int clk_delay; /* number of MCI clk hold cycles */