22 Feb, 2016

2 commits


21 Feb, 2016

1 commit


19 Feb, 2016

5 commits

  • When first initialized, cur_tx points to the 1st
    entry in the queue, and dirty_tx points to the last.
    At this point, fec_enet_get_free_txdesc_num will
    return tx_ring_size -2. If tx_ring_size -2 entries
    are now queued, then fec_enet_get_free_txdesc_num
    should return 0, but it returns tx_ring_size instead.

    Signed-off-by: Troy Kisky
    Signed-off-by: David S. Miller

    Troy Kisky
     
  • On an overrun, the other flags are not
    valid, so don't check them.

    Also, don't pass bad frames up the stack.

    Signed-off-by: Troy Kisky
    Signed-off-by: David S. Miller

    Troy Kisky
     
  • Setting the FTRL register will stop the fec from
    trying to use multiple receive buffers.

    Signed-off-by: Troy Kisky
    Signed-off-by: David S. Miller

    Troy Kisky
     
  • PU can be dynamically turned off or on, so we need remove
    "regulator-always-on" property.

    Signed-off-by: Robin Gong
    (cherry picked from commit f3c0df15fbecce36cae531a4a919d544f9ea8e2a)

    Robin Gong
     
  • In .mdio_bus_phy_may_suspend(), there check netdev is NULL to judge to set
    phy to suspend status.

    netdev is NULL has three cases:
    - phy is not found
    - phy is found, match to general phy driver
    - phy is found, match to specifical phy driver

    Case 1: phy is not found, cannot communicate by MDIO bus.
    Case 2: phy is found:
    if phy dev driver probe/bind err, netdev is not __open__ status,
    mdio bus is unregistered.
    if phy is detached, phy had entered suspended status.
    Case 3: phy is found, phy is detached, phy had entered suspended status.

    So, in here, it shouldn't set phy to suspend by calling mdio bus.

    In i.MX6UL evk/arm2 board, if down the ethx interface and do suspend/resume,
    system will hang. Because after ethx down all clocks are gated off, for general
    phy driver, unbind the phy device, for specifical phy driver, no unbind the
    device, and the original driver call mdio bus to set phy to suspend during
    system suspend, so system will hang since there have mdio register access.
    The patch can fix it.

    Signed-off-by: Fugang Duan
    (cherry picked and merged from commit: ccbbf6172860e310858169a4e551ebf072c2f1a5)

    Conflicts:
    drivers/net/phy/mdio_bus.c

    Fugang Duan
     

18 Feb, 2016

3 commits

  • Update the i.MX6DL cpu operating points to comply with the latest
    published datasheet. Latest i.MX6DL datasheet of Rev.4, 10/2014
    updates the 396MHz setpoint's min voltage from 1.075V to 1.125V, Add a
    25mV margin to cover the board IR drop, here use 1.15V for 396MHz to
    match datasheet.

    Signed-off-by: Bai Ping
    (cherry picked from commit 13c0324e8a006478c1b2045be6e84587b9857ad8)

    Bai Ping
     
  • Add cpudile driver support for i.MX6DL.

    Signed-off-by: Bai Ping
    (cherry picked from commit 72809d405ca73f85c0397fa277ba2481512fe521)

    Bai Ping
     
  • On i.MX6UL, PGC_CPU_PUPSCR_SW's counter uses IPG/2048 as clock
    source, as IPG is at 1.5MHz during low power idle, so the power
    up time can be up to 1.3mS which is too long for idle.

    Since TO1.1, design team re-define the bit[5], if this bit is
    set to 1, the clock will be IPG/32, ~22us, enable this function
    for TO1.1, the latency value for low power idle needs to be
    adjusted accordingly.

    Signed-off-by: Anson Huang
    Signed-off-by: Robin Gong
    (cherry picked from commit 1036fbdba0111d7fa21acb810e01907db8997a31)

    Anson Huang
     

17 Feb, 2016

6 commits


16 Feb, 2016

16 commits

  • Fake one caps_1 register indicating hw auto retuning support since mx6qdl
    does not have it and enable auto retuning in post_tuning process.

    Signed-off-by: Dong Aisheng
    (cherry picked from commit b46b1ee480ce731165843f43481809b028203dd1)

    Dong Aisheng
     
  • Enable HW auto retuning when set SDHCI_CTRL_EXEC_TUNING and clear it
    when clear SDHCI_CTRL_TUNED_CLK.

    Signed-off-by: Dong Aisheng
    (cherry picked from commit d07db4fdf967ad8ecebb751f2ea24a578dfb9395)

    Dong Aisheng
     
  • If HW supports SDHCI_TUNING_MODE_3 which is auto retuning, we won't
    retune during runtime suspend and resume, instead we use Re-tuning
    Request signaled via SDHCI_INT_RETUNE interrupt to do retuning and
    hw auto retuning during data transfer to guarantee the signal sample
    window correction.

    This can avoid a mass of repeatly retuning during small file system
    data access and improve the performance.

    Signed-off-by: Dong Aisheng
    (cherry picked from commit 89c224b34d3a63797d956969c2fdf4ccb7ff25bf)

    Dong Aisheng
     
  • We see CRCs with SLV_DLY_TARGET of 7 during driver runtime suspend/resume
    if disable sw auto retuning. Back to SLV_DLY_TARGET of 1 which is used
    in 3.14 kernel and don't have such issue.

    Signed-off-by: Dong Aisheng
    (cherry picked from commit cfcd9c369186ddc8c9e25e7c7573f91a4516449d)

    Dong Aisheng
     
  • When enable WIFi and connected with AP, the system is unable to suspend.
    root@imx6qdlsolo:~# echo standby > /sys/power/state
    PM: Syncing filesystems ... done.
    Freezing user space processes ... (elapsed 0.001 seconds) done.
    Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
    dhdsdio_isr: Enter
    dhdsdio_isr: Enter
    dhdsdio_isr: disable SDIO interrupts
    Calling dhdsdio_dpc() from dhdsdio_isr
    dhdsdio_dpc: Enter
    dhdsdio_bussleep: request WAKE (currently SLEEP)

    (Keypress still response here.... )

    It's caused by Broadcom WiFi driver will keep handling SDIO irq even after
    the driver is already suspended.
    This weird behavior will block the MMC host suspend during its irq
    synchronize operation in free_irq(), then the system suspend is blocked
    too and hanged.

    Add SDHCI_QUIRK2_SDIO_IRQ_THREAD for BCM WiFi to use kernel thread
    to process sdio interrupts which won't block system suspend and process
    freeze operation.

    Signed-off-by: Dong Aisheng
    (cherry picked from commit 66b534082968214707d54d96ba142bc528a6e1de)

    Dong Aisheng
     
  • SDIO cards may need clock to send the card interrupt to host.
    Thus, we get runtime pm when sdio irq is enabled to prevent the clock
    resource is released and put it when sdio irq is disabled.

    This patch can allow sdio irq disable (mmc_signal_sdio_irq()) to be
    called in interrupt context due to sdhci_runtime_pm_put() is atomic
    safe.

    Signed-off-by: Dong Aisheng
    (cherry picked from commit 250899a9ca2fdb31fc8d9d5405ac7b1c86beef44)

    Dong Aisheng
     
  • Some special SDIO devices like Broadcom WiFi driver will keep handling
    SDIO irq even after the driver is already suspended.
    This weird behavior will block the MMC host suspend during its irq
    synchronize operation in free_irq(), then the system suspend is blocked
    too and hanged.

    We add back sdio thread irq support for such WiFi driver to handle
    SDIO irqs since the sdio thread is kernel thread which does not
    block the process freeze operation during suspend.

    Signed-off-by: Dong Aisheng
    (cherry picked from commit a7e3d205da821c880ab62c21f81e2573c0b621b6)

    Dong Aisheng
     
  • BCM WiFi driver needs to take care of card detect by itself.
    Using cd-post property to tell MMC core not detect card automatically
    during host driver probe and post it untill client driver tells it to
    do it.

    Signed-off-by: Dong Aisheng
    (cherry picked from commit bc1ac009d93e3fe731162d3193108321611ca879)

    Dong Aisheng
     
  • bcmdhd can't support removing host during suspend and
    driver crash when detect card after resume due to no response
    to CMD7.
    It looks bcmdhd has a special requirement to enumerate card
    by itself which is incompatible with current MMC core.
    So implement post-cd feature to allow driver to detect card
    as it wants, then we add back non-removable capability
    to avoid MMC core to redetect card after resume.

    root@imx6qdlsolo:~# echo standby > /sys/power/state
    PM: Syncing filesystems ... done.
    PM: Preparing system for standby sleep
    Freezing user space processes ... (elapsed 0.001 seconds) done.
    Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
    PM: Entering standby sleep
    evbug: Event. Dev: input3, Type: 0, Code: 0, Value: 1
    evbug: Event. Dev: input2, Type: 0, Code: 0, Value: 1
    PM: suspend of devices complete after 652.363 msecs
    PM: suspend devices took 0.660 seconds
    PM: late suspend of devices complete after 1.148 msecs
    PM: noirq suspend of devices complete after 1.043 msecs
    Disabling non-boot CPUs ...
    CPU1: shutdown
    Enabling non-boot CPUs ...
    CPU1 is up
    PM: noirq resume of devices complete after 0.534 msecs
    PM: early resume of devices complete after 0.553 msecs
    evbug: Event. Dev: input2, Type: 1, Code: 116, Value: 1
    evbug: Event. Dev: input2, Type: 0, Code: 0, Value: 0
    evbug: Event. Dev: input2, Type: 1, Code: 116, Value: 0
    evbug: Event. Dev: input2, Type: 0, Code: 0, Value: 0
    mmc1: error -110 during resume (card was removed?)
    PM: resume of devices complete after 605.525 msecs
    PM: resume devices took 0.610 seconds
    PM: Finishing wakeup.
    Restarting tasks ... done.
    WARNING: driver bcmsdh_sdmmc did not remove its interrupt handler!
    root@imx6qdlsolo:~# Unable to handle kernel NULL pointer dereference at virtual address 0000022c
    pgd = 80004000
    [0000022c] *pgd=00000000
    Internal error: Oops: 17 [#1] PREEMPT SMP ARM
    Modules linked in: bcmdhd evbug ov5647_camera_mipi mxc_mipi_csi mx6s_capture
    CPU: 1 PID: 780 Comm: kworker/u4:4 Not tainted 4.1.15-01434-g70f4b36 #1310
    Hardware name: Freescale i.MX7 Dual (Device Tree)
    Workqueue: kmmcd mmc_rescan
    task: a974af80 ti: a846e000 task.ti: a846e000
    PC is at _raw_spin_lock_irqsave+0x1c/0x5c
    LR is at get_parent_ip+0x10/0x2c
    pc : [] lr : [] psr: 60050093
    sp : a846fc20 ip : 0001001f fp : a800b000
    r10: 00000000 r9 : 00000001 r8 : 0000022c
    r7 : 00000002 r6 : 0000022c r5 : a0050013 r4 : 0000022c
    r3 : a974af80 r2 : 00000001 r1 : a846fc44 r0 : 00000000
    Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel
    Control: 10c53c7d Table: a951406a DAC: 00000015
    Process kworker/u4:4 (pid: 780, stack limit = 0xa846e210)
    Stack: (0xa846fc20 to 0xa8470000)
    fc20: 00000000 a846fc50 a846fc44 80061808 00000000 000001dc 00000000 805037fc
    fc40: 8d89d5ec 00000000 a974af80 80053e88 00000000 00000000 ab7293c0 00000000
    fc60: 7f09c828 000000c9 7f09c828 a916a804 00000001 0001001f a800b000 7f0698a4
    fc80: a974afc8 00000001 00000000 00000000 00012ebc a974af80 00000001 80ad46c0
    fca0: a974af80 00000000 a8eeccc0 00000001 0001001f a846fd04 00000000 7f099440
    fcc0: a800b000 7f0699c4 a846fcdf 00000000 00000001 7f068834 a937c900 0105c688
    fce0: a846fd04 a8e20000 00000000 00000001 00000000 7f071f08 a846fd04 a80a0000
    fd00: ffffffff 00000000 ffffffff a8e20000 a8e20000 00000000 7f099440 00000000
    fd20: 00000000 7f099440 a800b000 7f072f4c a974af80 00000000 00000000 80778564
    fd40: a846fd54 a9346550 80330028 00000001 a846e000 a8e20000 7f099440 00000000
    fd60: 18005000 a8eeccc0 00000000 7f099440 a800b000 7f073744 a846fd8c 80052130
    fd80: a9273898 00000000 a800b000 a8e20000 7f099440 00000001 a8eec200 a9270000
    fda0: 00000000 7f099440 a800b000 7f07cd3c 80b81100 8040003f a800b000 00000000
    fdc0: 00000000 a8e20000 7f099440 a9270000 a9273000 a9270000 00000000 7f099440
    fde0: a800b000 7f02df4c 00000001 a8e20000 7f099440 a8eec200 00000000 a916e008
    fe00: 00000000 a90bfb00 a800b000 7f074cbc a9270000 7f099440 a8e20000 00000000
    fe20: a8f81610 7f0765ec 7f0765b0 a8eeccc0 a855df40 7f069310 a916a800 a8eec200
    fe40: 7f09b414 7f06a950 7f06a908 a8f81608 a8f81600 8050e8b8 a8f81608 7f09b414
    fe60: 80b22c70 80379744 a974af80 a8f8163c a8f81608 803797d4 00000005 a81ce930
    fe80: a8f81608 8037923c a8f81608 a8f81608 80b93cf4 80376504 a846fea0 800e0e3c
    fea0: 00000000 00000000 a8f81608 000000bd a833f000 00000000 00000000 8050ed04
    fec0: 00000001 8050dd8c 400f8c0f a833f000 ffffff92 a833f000 a81ce600 8050de30
    fee0: 8050ddbc a833f240 a833f1dc 80506048 a90bfb00 a833f240 a800b000 a81ce600
    ff00: 00000000 800462f0 a81ce600 80043c94 00000000 a800b000 a90bfb18 a800b014
    ff20: a846e000 00000088 80b39379 a90bfb00 a800b000 8004654c 80ad4100 a800b164
    ff40: a90bfb00 00000000 a84856c0 a90bfb00 80046500 00000000 00000000 00000000
    ff60: 00000000 8004b1e8 2df9acc7 00000000 b5f3ff89 a90bfb00 00000000 00000000
    ff80: a846ff80 a846ff80 00000000 00000000 a846ff90 a846ff90 a846ffac a84856c0
    ffa0: 8004b10c 00000000 00000000 8000f568 00000000 00000000 00000000 00000000
    ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 ecd61557 f82769f5
    [] (_raw_spin_lock_irqsave) from [] (add_wait_queue+0x20/0x48)
    [] (add_wait_queue) from [] (__mmc_claim_host+0x58/0x1b0)
    [] (__mmc_claim_host) from [] (sdioh_request_byte+0x1cc/0x2a4 [bcmdhd])
    [] (sdioh_request_byte [bcmdhd]) from [] (sdioh_cfg_write+0x20/0x28 [bcmdhd])
    [] (sdioh_cfg_write [bcmdhd]) from [] (bcmsdh_cfg_write+0x90/0xdc [bcmdhd])
    [] (bcmsdh_cfg_write [bcmdhd]) from [] (dhdsdio_clk_kso_enab+0x38/0x168 [bcmdhd])
    [] (dhdsdio_clk_kso_enab [bcmdhd]) from [] (dhdsdio_clk_devsleep_iovar+0xf4/0x5f4 [bcmdhd])
    [] (dhdsdio_clk_devsleep_iovar [bcmdhd]) from [] (dhdsdio_bussleep+0x2f8/0x4dc [bcmdhd])
    [] (dhdsdio_bussleep [bcmdhd]) from [] (dhd_bus_stop+0x2e8/0x3f0 [bcmdhd])
    [] (dhd_bus_stop [bcmdhd]) from [] (dhd_detach+0x2a4/0x438 [bcmdhd])
    [] (dhd_detach [bcmdhd]) from [] (dhdsdio_release+0x4c/0x1dc [bcmdhd])
    [] (dhdsdio_release [bcmdhd]) from [] (dhdsdio_disconnect+0x3c/0xa0 [bcmdhd])
    [] (dhdsdio_disconnect [bcmdhd]) from [] (bcmsdh_remove+0x3c/0x60 [bcmdhd])
    [] (bcmsdh_remove [bcmdhd]) from [] (bcmsdh_sdmmc_remove+0x48/0x60 [bcmdhd])
    [] (bcmsdh_sdmmc_remove [bcmdhd]) from [] (sdio_bus_remove+0x30/0xf8)
    [] (sdio_bus_remove) from [] (__device_release_driver+0x70/0xe4)
    [] (__device_release_driver) from [] (device_release_driver+0x1c/0x28)
    [] (device_release_driver) from [] (bus_remove_device+0xd8/0x104)
    [] (bus_remove_device) from [] (device_del+0x10c/0x210)
    [] (device_del) from [] (sdio_remove_func+0x1c/0x28)
    [] (sdio_remove_func) from [] (mmc_sdio_remove+0x40/0x70)
    [] (mmc_sdio_remove) from [] (mmc_sdio_detect+0x74/0x100)
    [] (mmc_sdio_detect) from [] (mmc_rescan+0xb8/0x314)
    [] (mmc_rescan) from [] (process_one_work+0x120/0x330)
    [] (process_one_work) from [] (worker_thread+0x4c/0x480)
    [] (worker_thread) from [] (kthread+0xdc/0xf4)
    [] (kthread) from [] (ret_from_fork+0x14/0x2c)
    Code: f10c0080 e3a00001 ebe359b1 f594f000 (e1943f9f)

    Signed-off-by: Dong Aisheng
    (cherry picked from commit 8f998ca4d07aa93460ac7769c1f2b3be0c36fc78)

    Dong Aisheng
     
  • Fix the following crash during module removing.
    root@imx6qdlsolo:~# modprobe -r bcmdhd
    dhd_prot_ioctl : bus is down. we have nothing to do
    dhd_wlfc_deinit():3271, ampdu_hostreorder get failed Err = -1
    dhd_prot_ioctl : bus is down. we have nothing to do
    dhd_wlfc_deinit():3294 failed to enable/disable bdcv2 tlv signaling Err = -1
    dhd_detach(): thread:dhd_watchdog_thread:34f terminated OK
    dhd_dpc_thread: Unexpected up_cnt 0
    dhd_detach(): thread:dhd_dpc:350 terminated OK
    CFG80211-ERROR) wl_event_handler : was terminated
    wl_destroy_event_handler(): thread:wl_event_handler:34e terminated OK
    ------------[ cut here ]------------
    Kernel BUG at 800e0f40 [verbose debug info unavailable]
    Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM
    Modules linked in: bcmdhd(-) evbug ov5647_camera_mipi mxc_mipi_csi mx6s_capture [last unloaded: bcmdhd]
    CPU: 0 PID: 854 Comm: modprobe Not tainted 4.1.15-01434-g70f4b36 #1311
    Hardware name: Freescale i.MX7 Dual (Device Tree)
    task: a97fc4c0 ti: a912e000 task.ti: a912e000
    PC is at kfree+0x188/0x18c
    LR is at wiphy_unregister+0x17c/0x204
    pc : [] lr : [] psr: 400d0013
    sp : a912fe30 ip : 00080353 fp : a8647970
    r10: 7f219440 r9 : a9420140 r8 : ac75fa60
    r7 : a9420000 r6 : 00000000 r5 : 00000000 r4 : a9420140
    r3 : 00000000 r2 : 00000000 r1 : 07ffffff r0 : 00353443
    Flags: nZcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
    Control: 10c53c7d Table: a940c06a DAC: 00000015
    Process modprobe (pid: 854, stack limit = 0xa912e210)
    Stack: (0xa912fe30 to 0xa9130000)
    fe20: 7f219440 a9420140 00000000 00000000
    fe40: a9420000 a94203a0 a9420140 7f219440 a8647970 80712184 00000000 7f219440
    fe60: a8647970 805e1994 7f21d5d8 a8500000 a8574840 a94203a0 00000000 a8647000
    fe80: a94203a0 7f1cb9ec 00000000 00000000 a8644000 a8647000 a8644000 7f21d5d8
    fea0: 7f219440 7f1adf28 00000001 a956d000 7f219440 a9770440 00000000 8000f644
    fec0: a912e000 00000000 002691a0 7f1f4cbc a8644000 7f219440 a956d000 00000000
    fee0: 00000081 7f1f65ec 7f1f65b0 a9770b40 a9770b00 7f1e9310 a96f6000 a9770440
    ff00: 7f21b414 7f1ea950 7f1ea908 a8fdba08 a8fdba00 8050ee74 a8fdba08 7f21b414
    ff20: a8fdba3c 80379744 7f21b414 a8fdba08 7f21b414 80379ed4 7f21b414 002691dc
    ff40: 002691a0 803794a4 7f21b478 7f1ff6bc 7f1ff690 8008fec0 00000000 646d6362
    ff60: c0006468 00000000 a97fc8b8 00000000 a97fc8b8 00000000 80b41528 a97fc4c0
    ff80: 002691a0 80049c60 a8576540 a912e000 8000f644 0012ffb0 00000006 002691a0
    ffa0: 002691dc 8000f4c0 002691a0 002691dc 002691dc 00000800 76e72f78 00000000
    ffc0: 002691a0 002691dc 002691a0 00000081 00000001 00000000 00000001 002691a0
    ffe0: 76e388a0 7ec089f4 0001f008 76e388ac 600d0010 002691dc 00656e6f 635f6c77
    [] (kfree) from [] (wiphy_unregister+0x17c/0x204)
    [] (wiphy_unregister) from [] (wl_free_wdev+0x40/0x148 [bcmdhd])
    [] (wl_free_wdev [bcmdhd]) from [] (dhd_detach+0x280/0x438 [bcmdhd])
    [] (dhd_detach [bcmdhd]) from [] (dhdsdio_release+0x4c/0x1dc [bcmdhd])
    [] (dhdsdio_release [bcmdhd]) from [] (dhdsdio_disconnect+0x3c/0xa0 [bcmdhd])
    [] (dhdsdio_disconnect [bcmdhd]) from [] (bcmsdh_remove+0x3c/0x60 [bcmdhd])
    [] (bcmsdh_remove [bcmdhd]) from [] (bcmsdh_sdmmc_remove+0x48/0x60 [bcmdhd])
    [] (bcmsdh_sdmmc_remove [bcmdhd]) from [] (sdio_bus_remove+0x30/0xf8)
    [] (sdio_bus_remove) from [] (__device_release_driver+0x70/0xe4)
    [] (__device_release_driver) from [] (driver_detach+0xac/0xb0)
    [] (driver_detach) from [] (bus_remove_driver+0x4c/0xa0)
    [] (bus_remove_driver) from [] (dhd_module_cleanup+0x2c/0x3c [bcmdhd])
    [] (dhd_module_cleanup [bcmdhd]) from [] (SyS_delete_module+0x174/0x1b8)
    [] (SyS_delete_module) from [] (ret_fast_syscall+0x0/0x3c)
    Code: e1a03007 e28dd004 e8bd4ff0 eafffd59 (e7f001f2)
    ---[ end trace 49de84cadd3d030b ]---
    Segmentation fault
    root@imx6qdlsolo:~#

    Signed-off-by: Dong Aisheng
    (cherry picked from commit ae2685263abef87f6be50e62c9422500a8af2e45)

    Dong Aisheng
     
  • Broadcom bcmdhd engineering release for 4.1 kernel

    Signed-off-by: Dong Aisheng
    (cherry picked from commit 3db5d6ddb1201ab31f63994a1027a4915419783e)

    Dong Aisheng
     
  • Current driver do not clear the tuning related register setting,
    this will impact the timing and let the card inserted later meet
    CRC error.

    Take the DDR50 card as example, if plug out an SDR104 card and
    then plug in this DDR50 card, we will meet the following error log:

    mmc2: new ultra high speed DDR50 SDHC card at address aaaa
    mmcblk2: mmc2:aaaa SE08G 7.40 GiB
    mmcblk2: error -84 transferring data, sector 0, nr 8, cmd response 0x900, card status 0xb00
    mmc2: tried to reset card
    mmcblk2: p1 p2

    Logictally, we should reset the tuning circurt everytime when we
    plug in a sd card.

    Signed-off-by: Haibo Chen
    (cherry picked from commit 1f47730e8e30f37ed0289b2900e524db60456ae4)

    Haibo Chen
     
  • Currently sdhci driver free irq in host suspend, and call
    request_threaded_irq() in host resume. But during host resume,
    Ctrl+C can impact sdhci host resume, see the error log:

    CPU1 is up
    PM: noirq resume of devices complete after 0.637 msecs imx-sdma 30bd0000.sdma: loaded firmware 4.1
    PM: early resume of devices complete after 0.774 msecs
    dpm_run_callback(): platform_pm_resume+0x0/0x44 returns -4
    PM: Device 30b40000.usdhc failed to resume: error -4
    dpm_run_callback(): platform_pm_resume+0x0/0x44 returns -4
    PM: Device 30b50000.usdhc failed to resume: error -4
    dpm_run_callback(): platform_pm_resume+0x0/0x44 returns -4
    PM: Device 30b60000.usdhc failed to resume: error -4 fec 30be0000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
    mmc0: Timeout waiting for hardware interrupt.
    mmc0: Timeout waiting for hardware interrupt.
    mmc0: Timeout waiting for hardware interrupt.
    mmc0: Timeout waiting for hardware interrupt.
    mmc0: Timeout waiting for hardware interrupt.
    mmc0: Timeout waiting for hardware interrupt.
    mmc0: error -110 during resume (card was removed?)
    mmc2: Timeout waiting for hardware interrupt.
    mmc2: Timeout waiting for hardware interrupt.
    mmc2: error -110 during resume (card was removed?)

    In request_threaded_irq-> __setup_irq-> kthread_create
    ->kthread_create_on_node, the comment shows that SIGKILLed will
    impact the kthread create, and return -EINTR.

    This patch replace them with disable|enable_irq(), that will prevent
    IRQs from being propagated to the sdhci driver.

    Signed-off-by: Haibo Chen
    (cherry picked from commit eaa3b974832ef65d55330156475586bed5647ad7)

    Haibo Chen
     
  • After we put gadget disconnect and connect in id switch handling,
    update power lost work accordingly.

    Acked-by: Peter Chen
    Signed-off-by: Li Jun

    Li Jun
     
  • During system sleep, if we switch otg role from gadget to host, and host
    vbus is directly controlled by ID signal, we will lose vbus drop event
    after resume because the vbus is on both at system suspend and resume, so
    we will miss gadget disconnect handling before start host role. This patch
    is to fix it by adding gadget disconnect for this case.

    Acked-by: Peter Chen
    Signed-off-by: Li Jun

    Li Jun
     
  • During system sleep, if we switch otg role from host to gadget, because
    the vbus is on both at system suspend and resume, we will lose vbus
    connect event after system resume, thus, no chance to setup vbus session
    for gadget so enumeration will not happen. This patch is to fix it by
    adding vbus connect handling for this case.

    Acked-by: Peter Chen
    Signed-off-by: Li Jun

    Li Jun
     

12 Feb, 2016

3 commits


10 Feb, 2016

1 commit

  • During the crypto manager self test, a aead encryption opertation
    is carried out. This operations allocates a aead request, which is
    handed to the CAAM driver. The CAAM driver allocates and maps the
    required structures.

    During the allocation aead extended descriptor, a DMA to device
    mapping and synchronization are required. The order of this two
    operations matter, which should be map and then sync. Otherwise,
    there will be NULL pointer exception.

    This patch fix the order of this two operations, from sync-then-map
    to map-then-sync.

    Signed-off-by: Ulises Cardenas

    Ulises Cardenas
     

06 Feb, 2016

1 commit


04 Feb, 2016

2 commits

  • When audio stop, it will first stop dma, then stop cpu_dai.
    If there is delay between dma stop and cpu dai stop, there
    will be underrun error, the print will cost time, then will
    cause another underrun error, it is a infinite loop.
    Which will cause the cpu dai can't stop.

    Signed-off-by: Shengjiu Wang
    (cherry picked from commit 2b47facf5e2314838c5b6e583104ef92d39b6b77)

    Shengjiu Wang
     
  • We use the devm_snd_dmaengine_pcm_register() for platform,
    don't use devm_snd_soc_register_platform(), their close
    funtion is different. One will release the dma channel,
    but another one won't release channel.

    When system enter suspend mode, alsa library is in draining
    state, it will not resume alsa driver in system resume, just
    call close directly. But the alsa driver is in state
    SNDRV_PCM_STATE_SUSPENDED, which is not a running state, so
    the trigger stop is not called, and dmaengine_terminate_all()
    is not called, then dma resource is not released. Which cause
    that in the next playback the sdma driver will not be started.
    Then there is a lot of SAI underrun error.

    If we use the devm_snd_soc_register_platform() for platfrom
    driver, there will be no issue, because it will release dma
    channel, release dma resource. But we use the
    devm_snd_dmaengine_pcm_register() for platform driver. So this
    patch is to add dmaengine_terminate_all() in the
    snd_dmaengine_pcm_close() to fix this issue.

    Signed-off-by: Shengjiu Wang
    (cherry picked from commit ff62968ea8c8b5414f3f049e61addcd4d2bec3b9)

    Shengjiu Wang