Ignore bus resume flags in the resume path if there is an outstanding card
removal event.
With deferred resume feature enabled, we don't check for card presence
(i.e., mmc_detect_change) in the resume path. This is to improve the resume
latency. If at all card is removed during suspend state, in some cases we
may not detect the card removal immediately but only when a request was
issued to it.
In some scenarios, card removal in suspend state leading to card suspend to
fail (since the card is removed) and which is causing system suspend to
fail. And we don't try to resume card because of deferred resume it
leading to system suspend to fail continuously.
To fix this scenario, ignore the bus resume flag in the resume path only if
there an outstanding card removal event. By doing so, we are ensuring that
the driver would check for card presence (mmc_detect_change) in the resume
path (mmc_pm_notify) and it will mark the card as removed if it finds the
card is no more present.
Change-Id: I7d075c2a5c2aaba1ff92f4072fdd2541bb98aa95
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Enable the async suspend of the mmc card device. Suspending of card
requires sending various commands and disabling some features especially
in case of eMMC cards. This can take time. So enabling suspending of
card asynchronously will allow other devices to suspend concurrently and
make the system suspend faster.
Change-Id: Id9987d2915cc02e48f74301febaf85a4d458478f
Signed-off-by: Vijay Viswanath <vviswana@codeaurora.org>
Since there is no longer a parent child relation between the platform
sdhc device and the sdhc card, there is a possibility that the mmc card
suspend can be executed after sdhc platform suspend is done. This can
happen if async suspend of mmc card is enabled. Suspending of mmc card
requires platform device to be on and platform device suspend should
occur after mmc card suspend. To ensure this ordering in system suspend
case, let the card suspend in the regular suspend phase and make the
platform device suspend in the late suspend phase of system suspend.
Change-Id: I092056bf4099c09fcb4bd12695367f9d02ae9776
Signed-off-by: Vijay Viswanath <vviswana@codeaurora.org>
Force probing the sdhc1 bus even if it is not the boot device
by reading the device tree property qcom,force-sdhc1-probe.
Enables using the primary port for other use cases even when
the board is not using eMMC for boot.
Change-Id: I2a2b9d6a51037641720bdfd3107b2fadf385d7b5
Signed-off-by: Gustavo Solaira <gustavos@codeaurora.org>
In mmc_blk_ioctl_rpmb_cmd(), if user data copy fails, the card
variable is dereferenced without NULL pointer check.
Adding NULL pointer check in this condition.
Change-Id: If3fd2175946cccaf838768d45de72bc2f5c32f6b
Signed-off-by: Siba Prasad <sibap@codeaurora.org>
Set bus resume polocy for eMMC & SD drivers.
Change-Id: If2e76877fb229a4aba38249c4a1bb2ff8d28ba32
Signed-off-by: San Mehat <san@google.com>
Git-commit: 2c84417a1305da892c8a7d0bf8d0bad50d1688b8
Git-repo: git://git-android.quicinc.com/kernel/msm-3.10
[vbadigan@codeaurora.org: Dropped changes which are already
present in mmc driver as part of other propagations]
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
From sdm660 onwards, the sdcc core will support
CDR in CMDQ mode, so it needs to be enabled.
This change is to enable CDR for cmdq mode.
Change-Id: I64681a3c94b6bd4191337c5c014171ff32a7d3c1
Signed-off-by: Sayali Lokhande <sayalil@codeaurora.org>
While switching from hs400 to hs200 mode, high speed mode
timing should be selected in the device before changing the
clock frequency in the host. But current implementation,
(mmc_hs400_to_hs200) first updates the frequency in the host
and then updates mode in the device. This is a spec violation.
Hence update the sequence to comply with the spec.
Change-Id: I0694edac9dd005ec68add9cc38bbe6fa4245ed48
Signed-off-by: Sayali Lokhande <sayalil@codeaurora.org>
Upon encountering any error, few important registers are being captured
in trace logs in sdhci_dumpregs(). But without capturing exact error,
it would be tough to determine from which point in driver this dumpregs
has called. So capture the error state as well in Trace logs before
calling sdhci_dumpregs(). Also capture power irq related registers in
Trace logs upon any power irq related errors.
Change-Id: Ide172cdfb88a988cd4220bed03d05b8c6c4f15cb
Signed-off-by: Siba Prasad <sibap@codeaurora.org>
Memory allocations with GFP_KERNEL flag in clock scaling path might
trigger IO transfer. This can cause deadlock since the claim_host
lock which is needed by mmc driver to perform IO is held by clock
scaling context.
Below is the exact call sequence:
mmc_devfreq_set_target() -> mmc_clk_update_freq () ->
mmc_change_bus_speed() -> mmc_select_hs400() -> mmc_select_bus_width()
-> mmc_get_ext_csd() -> kzalloc(512, GFP_KERNEL) -> try_to_free_pages()
-> evict() -> ext4_evict_inode().
To avoid this scenario, use PF_MEMALLOC flag for clock scaling context
so that it can have access to the more reserves of memory. And since
devfreq workitem would run in different kworker threads, restore to
original flags once done with setting clock frequency.
Change-Id: If52f83f6ecae982d8ed709b08fd84545c7ecbc43
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Ratelimit the error log in order to avoid flooding the logs in
case of function mmc_blk_cmd_recovery() gets called repeatedly.
Change-Id: Ic72087382fca2e188f1bbd8195a805cd751ed22e
Signed-off-by: Siba Prasad <sibap@codeaurora.org>
Removed a local variable in mmc_start_req() which was used to store the
error encountered while starting a new data request. If an error is
encountered while starting a new request, the error
information is stored in the mrq. The error information stored in the
mrq is during error handling. So removing the unused variable.
Change-Id: Ifeedc91433230d5156d286bd332a85fb221188ac
Signed-off-by: Vijay Viswanath <vviswana@codeaurora.org>
As per emmc specification, device should be notified either with
power-off or sleep notification before turning off the Vcc.
Failing to do so might affect the device longevity.
In mmc driver initialization phase even before device probing
gets completed, Vcc is getting turned off without these notifications.
Since it can't send commands at this stage, So just ensure that Vcc
is not turned off till initialization gets completed.
Change-Id: I0bbf0077357d66c888147be40a0c5d312b9ce063
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
* refs/heads/tmp-6fc0573:
Linux 4.4.71
xfs: only return -errno or success from attr ->put_listent
xfs: in _attrlist_by_handle, copy the cursor back to userspace
xfs: fix unaligned access in xfs_btree_visit_blocks
xfs: bad assertion for delalloc an extent that start at i_size
xfs: fix indlen accounting error on partial delalloc conversion
xfs: wait on new inodes during quotaoff dquot release
xfs: update ag iterator to support wait on new inodes
xfs: support ability to wait on new inodes
xfs: fix up quotacheck buffer list error handling
xfs: prevent multi-fsb dir readahead from reading random blocks
xfs: handle array index overrun in xfs_dir2_leaf_readbuf()
xfs: fix over-copying of getbmap parameters from userspace
xfs: fix off-by-one on max nr_pages in xfs_find_get_desired_pgoff()
xfs: Fix missed holes in SEEK_HOLE implementation
mlock: fix mlock count can not decrease in race condition
mm/migrate: fix refcount handling when !hugepage_migration_supported()
drm/gma500/psb: Actually use VBT mode when it is found
slub/memcg: cure the brainless abuse of sysfs attributes
ALSA: hda - apply STAC_9200_DELL_M22 quirk for Dell Latitude D430
pcmcia: remove left-over %Z format
drm/radeon: Unbreak HPD handling for r600+
drm/radeon/ci: disable mclk switching for high refresh rates (v2)
scsi: mpt3sas: Force request partial completion alignment
HID: wacom: Have wacom_tpc_irq guard against possible NULL dereference
mmc: sdhci-iproc: suppress spurious interrupt with Multiblock read
i2c: i2c-tiny-usb: fix buffer not being DMA capable
vlan: Fix tcp checksum offloads in Q-in-Q vlans
net: phy: marvell: Limit errata to 88m1101
netem: fix skb_orphan_partial()
ipv4: add reference counting to metrics
sctp: fix ICMP processing if skb is non-linear
tcp: avoid fastopen API to be used on AF_UNSPEC
virtio-net: enable TSO/checksum offloads for Q-in-Q vlans
be2net: Fix offload features for Q-in-Q packets
ipv6: fix out of bound writes in __ip6_append_data()
bridge: start hello_timer when enabling KERNEL_STP in br_stp_start
qmi_wwan: add another Lenovo EM74xx device ID
bridge: netlink: check vlan_default_pvid range
ipv6: Check ip6_find_1stfragopt() return value properly.
ipv6: Prevent overrun when parsing v6 header options
net: Improve handling of failures on link and route dumps
tcp: eliminate negative reordering in tcp_clean_rtx_queue
sctp: do not inherit ipv6_{mc|ac|fl}_list from parent
sctp: fix src address selection if using secondary addresses for ipv6
tcp: avoid fragmenting peculiar skbs in SACK
s390/qeth: avoid null pointer dereference on OSN
s390/qeth: unbreak OSM and OSN support
s390/qeth: handle sysfs error during initialization
ipv6/dccp: do not inherit ipv6_mc_list from parent
dccp/tcp: do not inherit mc_list from parent
sparc: Fix -Wstringop-overflow warning
android: base-cfg: disable CONFIG_NFS_FS and CONFIG_NFSD
schedstats/eas: guard properly to avoid breaking non-smp schedstats users
BACKPORT: f2fs: sanity check size of nat and sit cache
FROMLIST: f2fs: sanity check checkpoint segno and blkoff
sched/tune: don't use schedtune before it is ready
sched/fair: use SCHED_CAPACITY_SCALE for energy normalization
sched/{fair,tune}: use reciprocal_value to compute boost margin
sched/tune: Initialize raw_spin_lock in boosted_groups
sched/tune: report when SchedTune has not been initialized
sched/tune: fix sched_energy_diff tracepoint
sched/tune: increase group count to 5
cpufreq/schedutil: use boosted_cpu_util for PELT to match WALT
sched/fair: Fix sched_group_energy() to support per-cpu capacity states
sched/fair: discount task contribution to find CPU with lowest utilization
sched/fair: ensure utilization signals are synchronized before use
sched/fair: remove task util from own cpu when placing waking task
trace:sched: Make util_avg in load_avg trace reflect PELT/WALT as used
sched/fair: Add eas (& cas) specific rq, sd and task stats
sched/core: Fix PELT jump to max OPP upon util increase
sched: EAS & 'single cpu per cluster'/cpu hotplug interoperability
UPSTREAM: sched/core: Fix group_entity's share update
UPSTREAM: sched/fair: Fix calc_cfs_shares() fixed point arithmetics width confusion
UPSTREAM: sched/fair: Fix incorrect task group ->load_avg
UPSTREAM: sched/fair: Fix effective_load() to consistently use smoothed load
UPSTREAM: sched/fair: Propagate asynchrous detach
UPSTREAM: sched/fair: Propagate load during synchronous attach/detach
UPSTREAM: sched/fair: Fix hierarchical order in rq->leaf_cfs_rq_list
BACKPORT: sched/fair: Factorize PELT update
UPSTREAM: sched/fair: Factorize attach/detach entity
UPSTREAM: sched/fair: Improve PELT stuff some more
UPSTREAM: sched/fair: Apply more PELT fixes
UPSTREAM: sched/fair: Fix post_init_entity_util_avg() serialization
BACKPORT: sched/fair: Initiate a new task's util avg to a bounded value
sched/fair: Simplify idle_idx handling in select_idle_sibling()
sched/fair: refactor find_best_target() for simplicity
sched/fair: Change cpu iteration order in find_best_target()
sched/core: Add first cpu w/ max/min orig capacity to root domain
sched/core: Remove remnants of commit fd5c98da1a42
sched: Remove sysctl_sched_is_big_little
sched/fair: Code !is_big_little path into select_energy_cpu_brute()
EAS: sched/fair: Re-integrate 'honor sync wakeups' into wakeup path
Fixup!: sched/fair.c: Set SchedTune specific struct energy_env.task
sched/fair: Energy-aware wake-up task placement
sched/fair: Add energy_diff dead-zone margin
sched/fair: Decommission energy_aware_wake_cpu()
sched/fair: Do not force want_affine eq. true if EAS is enabled
arm64: Set SD_ASYM_CPUCAPACITY sched_domain flag on DIE level
UPSTREAM: sched/fair: Fix incorrect comment for capacity_margin
UPSTREAM: sched/fair: Avoid pulling tasks from non-overloaded higher capacity groups
UPSTREAM: sched/fair: Add per-CPU min capacity to sched_group_capacity
UPSTREAM: sched/fair: Consider spare capacity in find_idlest_group()
UPSTREAM: sched/fair: Compute task/cpu utilization at wake-up correctly
UPSTREAM: sched/fair: Let asymmetric CPU configurations balance at wake-up
UPSTREAM: sched/core: Enable SD_BALANCE_WAKE for asymmetric capacity systems
UPSTREAM: sched/core: Pass child domain into sd_init()
UPSTREAM: sched/core: Introduce SD_ASYM_CPUCAPACITY sched_domain topology flag
UPSTREAM: sched/core: Remove unnecessary NULL-pointer check
UPSTREAM: sched/fair: Optimize find_idlest_cpu() when there is no choice
BACKPORT: sched/fair: Make the use of prev_cpu consistent in the wakeup path
UPSTREAM: sched/core: Fix power to capacity renaming in comment
Partial Revert: "WIP: sched: Add cpu capacity awareness to wakeup balancing"
Revert "WIP: sched: Consider spare cpu capacity at task wake-up"
FROM-LIST: cpufreq: schedutil: Redefine the rate_limit_us tunable
cpufreq: schedutil: add up/down frequency transition rate limits
trace/sched: add rq utilization signal for WALT
sched/cpufreq: make schedutil use WALT signal
sched: cpufreq: use rt_avg as estimate of required RT CPU capacity
cpufreq: schedutil: move slow path from workqueue to SCHED_FIFO task
BACKPORT: kthread: allow to cancel kthread work
sched/cpufreq: fix tunables for schedfreq governor
BACKPORT: cpufreq: schedutil: New governor based on scheduler utilization data
sched: backport cpufreq hooks from 4.9-rc4
ANDROID: Kconfig: add depends for UID_SYS_STATS
ANDROID: hid: uhid: implement refcount for open and close
Revert "ext4: require encryption feature for EXT4_IOC_SET_ENCRYPTION_POLICY"
ANDROID: mnt: Fix next_descendent
Conflicts:
include/trace/events/sched.h
kernel/sched/Makefile
kernel/sched/core.c
kernel/sched/fair.c
kernel/sched/sched.h
Change-Id: I55318828f2c858e192ac7015bcf2bf0ec5c5b2c5
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
Set the dll to last known good phase before sending status command
while executing tuning. This is to ensure that status command won't
fail due to bad phase. Thus we can avoid sending status command
multiple times and reduce tuning latency.
Change-Id: Ib7fa5a8acbbffd9662617a357d221b36494a98b9
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Don't clear io pad power switch setting when 3V support is faked.
This bit has to be cleared for allowing IO pad to switch to 3V when
Vccq is really configured to 3V. But in case of faking 3V where we
configure Vccq to 1.8V only, we shouldn't clear this bit.
Change-Id: Ib1a9a2eb7189e161e22c8baf588453b3f2632eb7
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Without this fix the MMC may incorrectly set the CAPS for the SD card.
Change-Id: Ia4be2e78453663818cfd18deb9a590ec80423bca
Signed-off-by: Bao D. Nguyen <nguyenb@codeaurora.org>
While executing tuning in case CMD19 fails, the driver sends CMD13
multiple times to ensure the card is ready to receive the next tuning
command. If this status command fails with CRC error, it will trigger
tuning. This will result in back to back tuning multiple times.
To avoid this situation, ignore CRCs error generated with CMD13 while
executing tuning.
Change-Id: Ife338768264ebebebc655fe11874e905abdf7482
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
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Merge 4.4.71 into android-4.4
Changes in 4.4.71
sparc: Fix -Wstringop-overflow warning
dccp/tcp: do not inherit mc_list from parent
ipv6/dccp: do not inherit ipv6_mc_list from parent
s390/qeth: handle sysfs error during initialization
s390/qeth: unbreak OSM and OSN support
s390/qeth: avoid null pointer dereference on OSN
tcp: avoid fragmenting peculiar skbs in SACK
sctp: fix src address selection if using secondary addresses for ipv6
sctp: do not inherit ipv6_{mc|ac|fl}_list from parent
tcp: eliminate negative reordering in tcp_clean_rtx_queue
net: Improve handling of failures on link and route dumps
ipv6: Prevent overrun when parsing v6 header options
ipv6: Check ip6_find_1stfragopt() return value properly.
bridge: netlink: check vlan_default_pvid range
qmi_wwan: add another Lenovo EM74xx device ID
bridge: start hello_timer when enabling KERNEL_STP in br_stp_start
ipv6: fix out of bound writes in __ip6_append_data()
be2net: Fix offload features for Q-in-Q packets
virtio-net: enable TSO/checksum offloads for Q-in-Q vlans
tcp: avoid fastopen API to be used on AF_UNSPEC
sctp: fix ICMP processing if skb is non-linear
ipv4: add reference counting to metrics
netem: fix skb_orphan_partial()
net: phy: marvell: Limit errata to 88m1101
vlan: Fix tcp checksum offloads in Q-in-Q vlans
i2c: i2c-tiny-usb: fix buffer not being DMA capable
mmc: sdhci-iproc: suppress spurious interrupt with Multiblock read
HID: wacom: Have wacom_tpc_irq guard against possible NULL dereference
scsi: mpt3sas: Force request partial completion alignment
drm/radeon/ci: disable mclk switching for high refresh rates (v2)
drm/radeon: Unbreak HPD handling for r600+
pcmcia: remove left-over %Z format
ALSA: hda - apply STAC_9200_DELL_M22 quirk for Dell Latitude D430
slub/memcg: cure the brainless abuse of sysfs attributes
drm/gma500/psb: Actually use VBT mode when it is found
mm/migrate: fix refcount handling when !hugepage_migration_supported()
mlock: fix mlock count can not decrease in race condition
xfs: Fix missed holes in SEEK_HOLE implementation
xfs: fix off-by-one on max nr_pages in xfs_find_get_desired_pgoff()
xfs: fix over-copying of getbmap parameters from userspace
xfs: handle array index overrun in xfs_dir2_leaf_readbuf()
xfs: prevent multi-fsb dir readahead from reading random blocks
xfs: fix up quotacheck buffer list error handling
xfs: support ability to wait on new inodes
xfs: update ag iterator to support wait on new inodes
xfs: wait on new inodes during quotaoff dquot release
xfs: fix indlen accounting error on partial delalloc conversion
xfs: bad assertion for delalloc an extent that start at i_size
xfs: fix unaligned access in xfs_btree_visit_blocks
xfs: in _attrlist_by_handle, copy the cursor back to userspace
xfs: only return -errno or success from attr ->put_listent
Linux 4.4.71
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
commit f5f968f2371ccdebb8a365487649673c9af68d09 upstream.
The stingray SDHCI hardware supports ACMD12 and automatically
issues after multi block transfer completed.
If ACMD12 in SDHCI is disabled, spurious tx done interrupts are seen
on multi block read command with below error message:
Got data interrupt 0x00000002 even though no data
operation was in progress.
This patch uses SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 to enable
ACM12 support in SDHCI hardware and suppress spurious interrupt.
Signed-off-by: Srinath Mannam <srinath.mannam@broadcom.com>
Reviewed-by: Ray Jui <ray.jui@broadcom.com>
Reviewed-by: Scott Branden <scott.branden@broadcom.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Fixes: b580c52d58 ("mmc: sdhci-iproc: add IPROC SDHCI driver")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When echo values to debugfs entry force_error, unclocked
register access error would be detected. This change fixes
it by making sure the host is powered up and host clock is
ticking before access force event register for error
interrupt status.
Change-Id: I995523d64de36cd4872209db4a558aa83103fbb3
Signed-off-by: Can Guo <cang@codeaurora.org>
In resume_scaling, the host current clock is compared with max clock
of the card to adjust the current-scaling clock.
If max clock supported by the card is more than the max clock that the
host can support, then the above-mentioned comparison is resulting in
setting the current-scaling clock to scale-down clock frequency even
though current host clock is at the maximum clock. This will lead to
skipping of scaling down to lower clock in low load use-cases. So clock
would remain at max clock till next time clock is scaled up and then
scaled down.
To prevent this scenario, compare the host current clock with max clock
that host can be scaled-up instead of max clock of the card.
Change-Id: Ibbed4bb374f1cbb5aee21cfca4e7e97d8f999d51
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Initialize the clock scaling frequency table with the platform specific
frequencies while preparing it. So that the frequencies supported by
the card can be compared against the frequencies supported by the
platform and then the table can be updated with the optimal frequencies
to match with both card and platform.
Without resetting these values to default values, this table contains
the frequencies updated for the last used card. These old values would
be used instead of platform-specific values to compare against the
frequencies of the newly inserted card. This can result in limiting
the max frequency to a lower frequency than what actually card can support.
Say if an high-speed card is used first and then a ultra-high-speed card,
the max scaling frequency would get set to the max of high-speed card
instead of max of the ultra-high-speed card.
Change-Id: I09a36e36c189e1d1fc317d798a0e3ff899f4e560
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Use a separate table to store the platform specific clock-scaling
frequencies.
The generic table where these frequencies used to be stored, would
get updated (in some cases) during clock scaling initialization.
But when a new card is inserted (In the case of a removable card),
the frequencies supported by the card should be compared against the
platform specific frequencies.
By storing these values in a separate table, these values would
remain intact and this table can be used for initializing the
generic table during clock-scaling initialization.
Change-Id: I5729f18a975f849bc2965a946473a9cdbd81e94a
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
These are all driver changes needed for disablement of
CONFIG_CC_OPTIMIZE_FOR_SIZE. CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE
is enabled by default once CONFIG_CC_OPTIMIZE_FOR_SIZE is disabled.
Change-Id: Ia46a1f24e8a082a29ea6151e41e6d3a85a05fd4f
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>
Signed-off-by: Sridhar Parasuram <sridhar@codeaurora.org>
UHS-I SD cards support SDR104 mode which runs the SD card interface
clock upto 208 MHz. But we may see repeated CRC errors in SDR104
with some SDCC controllers. If this happens, commit <aafc430b36f3>
("mmc: sd: reduce the bus speed in case of multiple CRC errors") would
reinit the card to lower speed (SDR50) hoping that CRC error
rate would reduce at lower clock speed (100MHz for SDR50). As the error
may happen for any cmd, this change tries to fix several other paths -
clock scaling, mmc_rescan, non-data commands error path.
Change-Id: I8ccbbf7e330cde3862d9660d3be4d67fb00d97ca
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
We have seen that host controller's clock tuning circuit may go out of sync
if controller clocks are gated. To workaround this issue, we are now
triggering the retuning of tuning circuit once clocks are ungated.
Change-Id: Id2db1cb4829fbb1af4f8c4e463d1e16c0f45e590
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
During shutdown of sdhc drivers, power off notification (PON) is sent
to eMMC device. But it doesn't prevent the clock scaling framework
from kicking in and sending commands to card after PON is sent. So
exit clock scaling framework of sdhc before PON is sent.
Change-Id: Ibfe097732042458965db529f235a7fd28cfabaab
Signed-off-by: Vijay Viswanath <vviswana@codeaurora.org>
When resume clock scaling is not possible because there is no devfreq
framework, it is not an error. So avoid printing an error and return
success. This is necessary in certain scenarios like during shutdown
where we unregister the clock scaling devfreq.
Change-Id: Ib37eabdcdbbb58a336ee87220e5758bb559625af
Signed-off-by: Vijay Viswanath <vviswana@codeaurora.org>
In case of emmc5.0 cards where HS400 mode and CMD5(awake) partial
init is enabled -> mmc_partial_init is broken and gives below errors.
Fix this by adding calibration logic in case of HS400 mode.
NOTE: In HS400 mode tuning is only performed once during bootup (in
HS200 mode).
Post to that it is always DLL calibration which is performed (in
system/runtime resume).
So even for below issue since timing is already changed using
cached_ios, then do the calibration using ->execute_tuning.
<dmesg errors w/o patch>
root@msm8996:/ # [ 76.011036] mmc0: mmc_runtime_suspend:
[ 77.315903] mmc0: mmc_runtime_resume:
[ 77.367866] mmc0: mmc_partial_init: starting partial init
[ 77.376225] mmc0: mmc_test_awake_ext_csd: mmc_get_ext_csd failed
(-110)
[ 77.382190] mmc0: mmc_partial_init: done partial init (-110)
[ 77.387536] mmc0: _mmc_resume: awake failed (-110), fallback to full
init
[ 77.394405] mmc0: mmc_init_card:
[ 77.402762] mmc0: mmc_init_card: mmc_send_op_cond() fails -110
[ 77.407573] mmc0: MMC card re-init failed rc = -110 (retries = 3)
[ 77.507261] mmc0: _mmc_resume: awake failed (-110), fallback to full
init
[ 77.513293] mmc0: mmc_init_card:
<dmesg with patch>
[ 74.002624] mmc0: mmc_runtime_resume:
[ 74.056089] mmc0: mmc_partial_init: starting partial init
[ 74.067143] mmc0: mmc_partial_init: done partial init (0)
Change-Id: I0e55efb7863b75bd584843c3fc920c845996eb5c
Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org>
While using the sysfs entry for getting the different bit values
of EXT_CSD register, it is returned by sprintf(). But sprintf() has
been deprecated, that's why replace with safe function snprintf().
By using this patch, PAGE_SIZE(4Kb) is the max number of characters
store in a buffer.
Change-Id: Ifb3dc39e8d3728094fff10c7e761dc19fdfaa854
Signed-off-by: Siba Prasad <sibap@codeaurora.org>
