Doug / smarc-fsl-linux-kernel

11 Dec, 2014

1 commit

  • 6966e9559   MLK-9970: CSI: VADC image corrupted ... Browse Code »

    If vadc unit test abnormal exit, such as kill -9 pid,
    next time run the unit test the image corrupted.

    In original implement, restore VADC specific register code in
    streamoff function.
    In specifical case, vadc unit test abnormal exit,
    the code in streamoff function will been executed in the next run.
    It is called from VIDIOC_REQBUFS.
    So csi will lose vadc configuration, and image is corrupted.

    Move restore VADC specific register code from streamoff function
    to device close function. Issue resolved.

    Signed-off-by: Sandor Yu

    Sandor Yu
     

10 Dec, 2014

3 commits

  • b4dbaacb1   MLK-9976: ARM: dts: NAND BBT inconsistency causes UBIFS randomly mount failed ... Browse Code »

    NAND scans the bad blocks during kernel boots up, which invokes the
    gpmi_ecc_read_oob function to check the badblock mark for each block. In
    this function the oob data was raw read from NAND chip without ECC, so
    it hardly to guarantee the consistency of the data considering the
    possible bitflips. It found that in some MLC NAND the oob data changed
    and consequently the BBT changed in different power cycles. This issue
    may cause the UBIFS mount failed.

    To fix this issue, add "nand_on_flash_bbt" option in dts to store the BBT
    in NAND flash. On the first time kernel boot up, all bad blocks and
    probably some fake bad block would be recognized and be recorded in
    on-nand bad block table. From the second time boot, kernel will read BBT
    from NAND Flash rather than calling gpmi_ecc_read_oob function to check
    bad block.

    No bad block would be missed when create BBT since the probability that
    16bit bad block mark filps from 0x00 to 0xFF is extremely low.

    Signed-off-by: Allen Xu
    (cherry picked from commit d957353768a1b6d39b340b9d10b22fc42b0aa8e2)

    Allen Xu
     
  • 39283bfa7   MA-5918 pxp: v4l2: output: stream off should be called after stream on. ... Browse Code »

    stream off should be called by pxp_close when stream is on.

    Signed-off-by: Liu Xiaowen
    (cherry picked from commit 481208f831519db30b3e33ddabefdd1fc66417d9)

    Liu Xiaowen
     
  • 155d2bd89   MLK-9978 ARM: dts: imx6sx-sdb: fix typo to enable LCDIF1 backlight ... Browse Code »

    use the string "okay" instead to enable backlight

    Signed-off-by: Robby Cai
    (cherry picked from commit 5468fd8a98086ec68347f92c4a525ea4c1b71c5f)

    Robby Cai
     

09 Dec, 2014

1 commit

  • 5ddfaaaee   MLK-9917 imx6sx: fix csi modules prevent system entering low power mode ... Browse Code »

    The reproduce step:
    $ echo 8 > /proc/sys/kernel/printk
    $ echo 1 > /sys/class/graphics/fb0/blank
    $ ifconfig eth0 down
    $ ifconfig eth1 down
    $ cat /sys/kernel/debug/clk/osc/pll2_bus/pll2_pfd2_396m/periph2_pre/periph2/mmdc_podf/clk_rate
    396000000

    The expected result should be '24000000' and following message.

    Bus freq set to 24000000 start...
    Bus freq set to 24000000 done!

    This patch did the following to fix it.
    - Move the pm runtime handling into csi v4l2 driver, request high bus frequency
    when the device opens and release high bus frequency when device closes.
    - Add new api csisw_reset() to mainly do DMA reflash otherwise potentially
    meet garbage data when CSI starts to work on imx6sl.

    Signed-off-by: Robby Cai
    (cherry picked from commit 857a52585c92cad8d851751f859e8e23ea4ae250)

    Robby Cai
     

06 Dec, 2014

2 commits

  • 363e746e8   MLK-9951 Update CAAM driver era interface ... Browse Code »

    Add more CAAM era values to the CAAM driver's caam_get_era()
    function. Read only 32 bits of data since the data required
    to identify the IP_ID and MAJ_REV is located in the first 32
    bits of the register. And, update the function for use with
    ARM/Little Endian devices.

    Signed-off-by: Victoria Milhoan
    (cherry picked from commit 6050d7faf2d0c063195aa9454c130548a9f8058f)

    Victoria Milhoan
     
  • 746f13662   MLK-9950 Remove deprecated caam_get_jrdev() from CAAM driver ... Browse Code »

    The caam_get_jrdev() function is no longer needed. The
    caam_jr_alloc() function is used instead to allocate a job
    ring device from the CAAM driver.

    Signed-off-by: Victoria Milhoan
    (cherry picked from commit bae574f498f4928ee5a42abeb419b045af5e1d91)

    Victoria Milhoan
     

05 Dec, 2014

1 commit

  • ccc6f0c48   MLK-9957 mtd: NAND: fix the kernel panic issue for NAND suspend/resume ... Browse Code »

    The branch determined by GPMI_IS_MX6SX() should not include
    acquire_dma_channels() function which causes unbalanced dma
    request/release on other platform.

    Removed GPMI_IS_MX6SX() to make code simple although it is not necessary
    to restore GPMI/BCH registers for i.MX6Q/DL

    Signed-off-by: Allen Xu
    (cherry picked from commit 54cd0fe03180dc44e3783bca1546e61d698abd2f)

    Allen Xu
     

04 Dec, 2014

3 commits

01 Dec, 2014

7 commits

29 Nov, 2014

3 commits

  • 10eee03c6   MLK-9932-2 usb: gadget: g_serial: fix oops during process context ... Browse Code »

    We meet below oops at rare cases when we do g_serial test at SMP platform,
    in our cases, the g_serial will be removed after some access.
    It seems the tty still tries to write when the port is freed.

    Unable to handle kernel NULL pointer dereference at virtual address 000000b0
    pgd = 80004000
    [000000b0] *pgd=00000000
    Internal error: Oops: 17 1 PREEMPT SMP ARM
    Modules linked in: usb_f_acm u_serial g_serial libcomposite configfs ov5642_camera ov5640_camera_mipi ov5640_camera mxc_dcic mxc_v4l2_capture ipu_bg_overlay_sdc ipu_still ipu_prp_enc ipu_csi_enc ipu_fg_overlay_sdc evbug
    CPU: 0 PID: 25 Comm: kworker/0:1 Not tainted 3.10.53-02612-g3ac9b04-dirty #210
    Workqueue: events flush_to_ldisc
    task: a80ae580 ti: a80e8000 task.ti: a80e8000
    PC is at _raw_spin_lock_irqsave+0x18/0x58
    LR is at _raw_spin_lock_irqsave+0x18/0x58
    pc : [] lr : [] psr: 800f0093
    sp : a80e9da0 ip : 00000001 fp : a8d97c00
    r10: a8d97e88 r9 : a8d97c00 r8 : 0000000d
    r7 : 0000006c r6 : a8da7400 r5 : 200f0013 r4 : 000000b0
    r3 : a80e8000 r2 : 00000000 r1 : a8d97c00 r0 : 00000001
    Flags: Nzcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel
    Control: 10c53c7d Table: 38cf404a DAC: 00000015
    Process kworker/0:1 (pid: 25, stack limit = 0xa80e8238)
    Stack: (0xa80e9da0 to 0xa80ea000)
    9da0: 7f095a30 00000000 000000b0 7f095a44 a8da7400 a8d95d1f a8da7400 802d8484
    9dc0: a80ae580 802d5ab0 a83a2500 a8d97e70 a8d97c00 a8da7400 a8d95d1f a8d95c1f
    9de0: 0000006c 0000000d a8d97c00 00000000 a8d97c00 802d7010 a8044080 00000000
    9e00: 00000000 80cc00c0 806ae500 00000000 00000000 00000002 00000000 815977d0
    9e20: 00000000 00000000 00000020 00000000 80cbcc40 a8044080 ffffbe45 00000000
    9e40: 00000001 81598c40 00000000 806848b8 80009038 ffffffff 00000000 8004e7c8
    9e60: 80cbe000 00000002 a80e9e8c 80684b9c 00000000 80051a10 a805c780 80cbcc40
    9e80: a805c780 80cbcc40 a80e9f2c 80683850 81598840 8068490c 00000000 80cceed4
    9ea0: 00000000 8004e744 81598840 a8ae5400 a8da7400 a8ae5410 a93a7940 a8ae5464
    9ec0: a8d95d1c 0000000f a8d95c1c 802db1f4 802db118 a8105980 a8ae5400 81598840
    9ee0: 8159ba00 00000000 00000000 a80e8038 81598840 800436d4 a8105998 a80e8000
    9f00: a80e8030 00000001 a80e8000 a8105980 81598854 a8105998 a80e8000 a80e8030
    9f20: 00000001 a80e8000 81598840 80044358 80044220 00000000 00000000 80d15701
    9f40: a80e9f64 a808fe98 00000000 a8105980 80044220 00000000 00000000 00000000
    9f60: 00000000 80049730 fcbb7bfd 00000000 ffdfdbfb a8105980 00000000 00000000
    9f80: a80e9f80 a80e9f80 00000000 00000000 a80e9f90 a80e9f90 a80e9fac a808fe98
    9fa0: 8004967c 00000000 00000000 8000e118 00000000 00000000 00000000 00000000
    9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 32fdff6f 9355fcea
    [] (_raw_spin_lock_irqsave+0x18/0x58) from [] (gs_write_room+0x14/0x60 [u_serial])
    [] (gs_write_room+0x14/0x60 [u_serial]) from [] (tty_write_room+0x18/0x24)
    [] (tty_write_room+0x18/0x24) from [] (process_echoes+0x48/0x2a8)
    [] (process_echoes+0x48/0x2a8) from [] (n_tty_receive_buf+0x384/0x101c)
    [] (n_tty_receive_buf+0x384/0x101c) from [] (flush_to_ldisc+0xdc/0x140)
    [] (flush_to_ldisc+0xdc/0x140) from [] (process_one_work+0xf8/0x360)
    [] (process_one_work+0xf8/0x360) from [] (worker_thread+0x138/0x3d4)
    [] (worker_thread+0x138/0x3d4) from [] (kthread+0xb4/0xb8)
    [] (kthread+0xb4/0xb8) from [] (ret_from_fork+0x14/0x3c)
    Code: e10f5000 f10c0080 e3a00001 ebe735b3 (e1943f9f)
    --[ end trace b1a6974fbb8c89dc ]--

    Signed-off-by: Peter Chen

    Peter Chen
     
  • ad4a99394   MLK-9932-1 usb: gadget: g_serial: fix oops during interrupt ... Browse Code »

    We meet below oops at rare cases when we do g_serial test at SMP platform,
    in our cases, the g_serial will be removed after some access.
    gserial_disconnect may be called before the complete handler is called,
    in this case, the port->port_usb is NULL at gs_start_tx, it matches
    the below oops.

    PC is at gs_start_tx+0x20/0x22c [u_serial]
    LR is at gs_write_complete+0x60/0x88 [u_serial]
    pc : [] lr : [] psr: 600e0193
    sp : a83adc10 ip : 00000002 fp : a8849f80
    r10: a803d64c r9 : a87dfeec r8 : a8849fbc
    r7 : a803d64c r6 : a87dfeb0 r5 : a8849f80 r4 : a87dfe00
    r3 : 00000000 r2 : 00000100 r1 : a8849c24 r0 : a87dfe00
    Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel
    Control: 10c53c7d Table: 38e0404a DAC: 00000015
    Process kworker/0:2 (pid: 105, stack limit = 0xa83ac238)
    Stack: (0xa83adc10 to 0xa83ae000)
    dc00: 81299260 a87dfeb0 00000002 a803d64c
    dc20: a8849f80 a87dfe00 a8849f80 a87dfeb0 a803d64c a8849fbc 00000002 a803d64c
    dc40: a8849f80 7f095894 a8849fb4 00000002 a8849fbc a8849fbc a803d6a4 803ed524
    dc60: a8849fb4 a8849680 00000009 00000001 80cc64e4 a803d010 a803d014 a803d684
    dc80: a803d64c 00000009 803ec908 a803d170 00100000 38a9ea00 80d15d88 a803d010
    dca0: a8009958 00000000 00000000 0000004b a8009900 80d1574f 00000001 803ea2f4
    dcc0: 803ea2a4 a83cd140 a8009958 80079ab4 a8849b00 a8849b00 a95f9fc0 a8009900
    dce0: a8009958 a83cd140 f4a00100 80bafa3c a8807000 a8807288 a8807000 80079c18
    dd00: a8009900 a8009958 00000000 8007c948 8007c8c4 0000004b 0000004b 8007927c
    dd20: 80cbbf00 8000e948 f4a0010c 80cc6914 a83add50 80008558 7f095ca0 8068484c
    dd40: 400e0013 ffffffff a83add84 8000dc80 a87dfeb0 200e0013 a83add60 0000a556
    dd60: a87dfe00 00000002 a87dfeb0 200e0013 80bafa3c a8807000 a8807288 a8807000
    dd80: a8991d44 a83add98 7f095ca0 8068484c 400e0013 ffffffff 00000000 7f095ca0
    dda0: a8808000 00000001 a8991c00 00001fff a8809000 802d59b0 00000a00 a8808000
    ddc0: 00000001 802d5bec a83addf4 a8807270 00000000 a8991c00 a96bf562 a96bf462
    dde0: 0000000a 000000bb a8807000 00000000 a8807000 802d7b64 80d1574f 400e0013
    de00: a88072a0 80cc00c0 806ae500 a8009900 a8009958 a83cd140 f4a00100 a87dfe64
    de20: a91c481c 806845b8 a8009900 80079c24 80cbbf00 0000004b 600e0193 800815c0
    de40: 80cbbf00 0000004b 00000000 f4a00100 a87dfe64 8000e94c f4a0010c 80cc6914
    de60: a83ade80 80008558 802db1d8 8068484c 800e0013 ffffffff a83adeb4 8000dc80
    de80: a87dfe10 200e0013 00000000 00003193 a87dfe00 a8991c00 a87dfe10 a8faa500
    dea0: a87dfe64 a91c491c 00000100 a87dfe00 a8991c00 a87dfe10 a8faa500 a87dfe64
    dec0: a96bf51c 00000100 a96bf41c 802db1f4 802db118 a820e600 a87dfe00 81597840
    dee0: 8159aa00 00000000 00000000 a83ac038 81597840 800436d4 a820e600 81597854
    df00: a820e618 a83ac000 a83ac030 a820e600 81597854 a820e618 a83ac000 a83ac030
    df20: 00000001 a83ac000 81597840 8004446c 80044220 00000000 00000000 80d15701
    df40: a83adf64 a808fe98 00000000 a820e600 80044220 00000000 00000000 00000000
    df60: 00000000 80049730 7cff2e7d 00000000 27dddefd a820e600 00000000 00000000
    df80: a83adf80 a83adf80 00000000 00000000 a83adf90 a83adf90 a83adfac a808fe98
    dfa0: 8004967c 00000000 00000000 8000e118 00000000 00000000 00000000 00000000
    dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 e4b9dbff e5bdd7ff
    [] (gs_start_tx+0x20/0x22c [u_serial]) from [] (gs_write_complete+0x60/0x88 [u_serial])
    [] (gs_write_complete+0x60/0x88 [u_serial]) from [] (udc_irq+0x478/0xd20)
    [] (udc_irq+0x478/0xd20) from [] (ci_irq+0x50/0x118)
    [] (ci_irq+0x50/0x118) from [] (handle_irq_event_percpu+0x54/0x17c)
    [] (handle_irq_event_percpu+0x54/0x17c) from [] (handle_irq_event+0x3c/0x5c)
    [] (handle_irq_event+0x3c/0x5c) from [] (handle_fasteoi_irq+0x84/0x14c)
    [] (handle_fasteoi_irq+0x84/0x14c) from [] (generic_handle_irq+0x2c/0x3c)
    [] (generic_handle_irq+0x2c/0x3c) from [] (handle_IRQ+0x40/0x90)
    [] (handle_IRQ+0x40/0x90) from [] (gic_handle_irq+0x2c/0x5c)
    [] (gic_handle_irq+0x2c/0x5c) from [] (__irq_svc+0x40/0x70)
    Exception stack(0xa83add50 to 0xa83add98)
    dd40: a87dfeb0 200e0013 a83add60 0000a556
    dd60: a87dfe00 00000002 a87dfeb0 200e0013 80bafa3c a8807000 a8807288 a8807000
    dd80: a8991d44 a83add98 7f095ca0 8068484c 400e0013 ffffffff
    [] (__irq_svc+0x40/0x70) from [] (_raw_spin_unlock_irqrestore+0x20/0x48)
    [] (_raw_spin_unlock_irqrestore+0x20/0x48) from [] (gs_write+0x48/0x68 [u_serial])
    [] (gs_write+0x48/0x68 [u_serial]) from [] (do_output_char+0x148/0x1b8)
    [] (do_output_char+0x148/0x1b8) from [] (process_echoes+0x184/0x2a8)
    [] (process_echoes+0x184/0x2a8) from [] (n_tty_receive_buf+0xed8/0x101c)
    [] (n_tty_receive_buf+0xed8/0x101c) from [] (flush_to_ldisc+0xdc/0x140)
    [] (flush_to_ldisc+0xdc/0x140) from [] (process_one_work+0xf8/0x360)
    [] (process_one_work+0xf8/0x360) from [] (worker_thread+0x24c/0x3d4)
    [] (worker_thread+0x24c/0x3d4) from [] (kthread+0xb4/0xb8)
    [] (kthread+0xb4/0xb8) from [] (ret_from_fork+0x14/0x3c)
    Code: e1a04000 e28020b0 e58d2004 e3a02c01 (e593705c)

    Signed-off-by: Peter Chen

    Peter Chen
     
  • a9497e6c6   MLK-9923 arm: imx: restore MMDC PODF setting when exiting low power idle on imx6sl ... Browse Code »

    If system is in audio busfreq mode, when entering low power idle, set the MMDC podf
    to 8 for power saving. Before exiting low power idle, the PODF value need to be restored
    to the original value.

    Signed-off-by: Bai Ping

    Bai Ping
     

28 Nov, 2014

7 commits

  • 38dbe3f9e   MLK-9931-3: usb: chipidea: call pulldown line when necessary ... Browse Code »

    If the controller is powered down, it may not pull down dp and dm any more,
    so the status of dp and dm is unknown, it will confuse the device.

    So for controllers which will power off its controller, we need to
    override pulldown feature, and pull down dp and dm by software
    before the sytem enters suspend, and disable override feature after
    system resume.

    Besides, it fixes issue that the low speed device will be disconnected
    after system resume when the controller is powered off during system
    suspend.

    Signed-off-by: Peter Chen

    Peter Chen
     
  • 239e326e6   MLK-9931-2: usb: phy: mxs: implement .pulldown_line ... Browse Code »

    The user can override controller's behavior for 15K pulldown resistor
    with this API.

    Signed-off-by: Peter Chen

    Peter Chen
     
  • b87e11f4e   MLK-9931-1: usb: phy: add pull down line API ... Browse Code »

    This API is used for platforms (may be specific for mxs PHY) which can
    pull down 15K resistor when necessary

    Signed-off-by: Peter Chen

    Peter Chen
     
  • 332bdc9b9   MLK-9928-2 arm: imx: support scaling M4 freq by A9 ... Browse Code »

    M4 can NOT switch its clk parent due to glitch MUX,
    to handle this case, A9 will help switch M4's clk
    parent, the flow is as below:

    M4:
    1. enter low power idle, send bus use count-- to A9;
    2. enter wfi and only wait for MU interrupt;
    3. receive A9's clk switch ready message, go into low
    power idle;
    4. receive interrupt to exit low power idle, send request
    to A9 for increase busfreq and M4 freq, enter wfi
    and only wait for MU interrupt;
    5. receive A9 ready message, go out of low power idle.

    A9:
    1. when receive M4's message of entering low power idle,
    wait M4 into wfi, hold M4 in wfi by hardware, gate
    M4 clk, then switch M4's clk to OSC, ungate M4 clk,
    send ready command to wake up M4 into low power idle;
    2. when receive M4's message of exiting low power idle,
    wait M4 into wfi, hold M4 in wfi by hardware, gate
    M4 clk, then switch M4's clk to origin high clk,
    ungate M4 clk, send ready command to wake up M4
    to exit low power idle;

    Signed-off-by: Anson Huang

    Anson Huang
     
  • 0851a103a   MLK-9928-1 arm: dts: imx6sx-m4: remove m4 node from shared memory ... Browse Code »

    As M4's clk switch MUX is NOT a glitchless one, when M4 try to
    switch its parent, it needs to be gated, so M4 can NOT switch its
    parent by itself, need A9 to help do it.

    Have to remove M4 from shared memory, it means M4's clk will be
    managed by A9 completely.

    Signed-off-by: Anson Huang

    Anson Huang
     
  • 56c6948b2   MLK-9929 net: fec: inserts VLAN tag for AVB 1722 packet ... Browse Code »

    For AVB 1722 non-canonical packet that don't define in linux networking,
    we inserts VLAN tag for application to think it as VLAN packet.

    (cherry-picked from commit: 6a156113269dd133ac6361dcfe8fd390cdae1e5e)

    Signed-off-by: Fugang Duan

    Fugang Duan
     
  • 209db59d8   MLK-9922 dts: Remove imx6sx lcdif1 reset pin SION setting ... Browse Code »

    For DCIC module all lcdif data and signal pins
    should configuration to SION(Software Input On Field)
    to enable loopback mode.
    But the pin of LCD1_RESET not required,
    so remove SION setting otherwise imx6sx sdb board can not
    resume from power suspend.

    Signed-off-by: Sandor Yu
    (cherry picked from commit ada39ddc49f527672281e510abe06d3f40559383)

    Sandor Yu
     

27 Nov, 2014

1 commit

26 Nov, 2014

4 commits

25 Nov, 2014

7 commits

  • 89aa41ebb   MLK-9413 mmc: sdhci: fix potential unblanced regulator disable ... Browse Code »

    The host->vmmc will be in disabled state if there's no card detected.
    In that case arbitrarily disabling the host->vmmc in sdhci_remove_host()
    may cause the following warning due to unblanced use count of regulator.

    root@imx6qdlsolo:~# modprobe -r sdhci-esdhc-imx
    mmc3: card e624 removed
    ------------[ cut here ]------------
    WARNING: at drivers/regulator/core.c:1727 _regulator_disable+0xe4/0x14c()
    unbalanced disables for VCC_SD3
    Modules linked in: sdhci_esdhc_imx(-) sdhci_pltfm
    CPU: 0 PID: 884 Comm: modprobe Not tainted 3.10.53-02577-gd22d937 #715
    [] (unwind_backtrace+0x0/0xf4) from [] (show_stack+0x10/0x14)
    [] (show_stack+0x10/0x14) from [] (warn_slowpath_common+0x54/0x6c)
    [] (warn_slowpath_common+0x54/0x6c) from [] (warn_slowpath_fmt+0x30/0x40)
    [] (warn_slowpath_fmt+0x30/0x40) from [] (_regulator_disable+0xe4/0x14c)
    [] (_regulator_disable+0xe4/0x14c) from [] (regulator_disable+0x30/0x64)
    [] (regulator_disable+0x30/0x64) from [] (sdhci_remove_host+0x78/0x160)
    [] (sdhci_remove_host+0x78/0x160) from [] (sdhci_esdhc_imx_remove+0x30/0x58 [sdhci_esdhc_imx])
    [] (sdhci_esdhc_imx_remove+0x30/0x58 [sdhci_esdhc_imx]) from [] (platform_drv_remove+0x18/0x1c)
    [] (platform_drv_remove+0x18/0x1c) from [] (__device_release_driver+0x70/0xcc)
    [] (__device_release_driver+0x70/0xcc) from [] (driver_detach+0xac/0xb0)
    [] (driver_detach+0xac/0xb0) from [] (bus_remove_driver+0x7c/0xd0)
    [] (bus_remove_driver+0x7c/0xd0) from [] (SyS_delete_module+0x124/0x210)
    [] (SyS_delete_module+0x124/0x210) from [] (ret_fast_syscall+0x0/0x30)
    ---[ end trace 7bd0fb3a78254b54 ]---
    root@imx6qdlsolo:~# EXT3-fs (mmcblk3p2): I/O error while writing superblock

    Only disable regulators if they're on when remove host controller.

    Signed-off-by: Dong Aisheng

    Dong Aisheng
     
  • 2cff5eb7b   MLK-9897-2 usb: otg-fsm: check B-device state before sending polling request ... Browse Code »

    While system resume, the connected udev as B-device may not has been resumed,
    if HNP polling request is sent to it, HNP polling may fail, this patch adds
    check of the udev state to make sure it finished resume and to be configured
    state before sending host request message, otherwise try next HNP polling
    request.

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

    Li Jun
     
  • a147c8808   MLK-9897-1 usb: chipidea: otg: use shared queue to handle hnp polling ... Browse Code »

    This patch moves out hnp polling from usb otg work queue to shared queue, as
    hnp polling call to usb_control_msg() which sends a control message and waits
    for it complete or timeout, so it's not proper to handle it in usb otg work
    queue which handles work with usb irq disabled.

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

    Li Jun
     
  • 2389257a5   MGS-298 gpu:Add new option to enable shadow memory free ... Browse Code »

    It's a specific requirement form customer.
    Environmant variable VIV_FBO_PERFER_MEM is added.
    When it's set, driver will free fbo shadow memory immediately
    when it's switch out.
    Original vivante patch name:cl29153.diff

    Date: Nov 25, 2014
    Signed-off-by: Loren Huang
    Acked-by: Jason Liu
    (cherry picked from commit c9d486e75fc7059050604188334ea846a25b9d13)

    Loren Huang
     
  • 65999b877   MLK-9906 imx6sl: make epdc pixel clock derive from PLL2_PFD1 ... Browse Code »

    Previously the pixel clock for LCDIF and EPDC shares the same parent clock
    PLL5_VIDEO. This will bring the following error boot message:

    clk_pllv3_av_set_rate: cannot configure divider when PLL is powered on

    The reason is the dual-display case breaks the rule added by the
    patch "93a9e3d0b88203cb523dd92e85590683d6a85fdf ENGR00318063-6:
    ARM: imx6: add CLK_SET_RATE_GATE flag for PLL clocks" which adds the
    requirement "the clock must be gated across rate change"

    After LCDIF pixel clock is configured and enabled, EPDC pixel clock
    need to be configured also but the parent PLL is already enabled by
    LCDIF driver thus the configuration will fail.

    On i.MX6SL, we need support LCD display and EPDC display simultaneously,
    then we cannot disable the PLL clock when LCD or EPDC is working already.
    So we switch the parent for EPDC pixel clock to PLL2_PFD1.

    Signed-off-by: Robby Cai
    (cherry picked from commit 8aa38347f486124f0bcec767b721a820fbae7010)

    Robby Cai
     
  • 51efb4c5b   MLK-9913 net: fec: fix kernel dump when enable netdev as wakeup source ... Browse Code »

    When enable CONFIG_DEBUG_SPINLOCK, kenrel boot up has kernel dump:

    libphy: fec_enet_mii_bus: probed
    BUG: spinlock bad magic on CPU#0, swapper/0/1
    lock: 0xa830e2f0, .magic: 00000000, .owner: /-1, .owner_cpu: 0
    CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.10.53-02595-g68a1d76 #144
    [] (unwind_backtrace+0x0/0xf4) from [] (show_stack+0x10/0x14)
    [] (show_stack+0x10/0x14) from [] (do_raw_spin_lock+0x154/0x180)
    [] (do_raw_spin_lock+0x154/0x180) from [] (device_wakeup_enable+0x3c/0x84)
    [] (device_wakeup_enable+0x3c/0x84) from [] (fec_probe+0xce8/0x1134)
    [] (fec_probe+0xce8/0x1134) from [] (platform_drv_probe+0x18/0x1c)
    [] (platform_drv_probe+0x18/0x1c) from [] (driver_probe_device+0x108/0x244)
    [] (driver_probe_device+0x108/0x244) from [] (__driver_attach+0x8c/0x90)
    [] (__driver_attach+0x8c/0x90) from [] (bus_for_each_dev+0x60/0x94)
    [] (bus_for_each_dev+0x60/0x94) from [] (bus_add_driver+0x1c0/0x24c)
    [] (bus_add_driver+0x1c0/0x24c) from [] (driver_register+0x78/0xf8)
    [] (driver_register+0x78/0xf8) from [] (do_one_initcall+0x108/0x158)
    [] (do_one_initcall+0x108/0x158) from [] (kernel_init_freeable+0x138/0x1d8)
    [] (kernel_init_freeable+0x138/0x1d8) from [] (kernel_init+0x8/0x158)
    [] (kernel_init+0x8/0x158) from [] (ret_from_fork+0x14/0x3c)

    The warning is driver calls device_wakeup_attach() to init wakeup source,
    and this locks &dev->power.lock, but the lock is not initialized until
    register_netdev(), so we move the device_init_wakeup() to behind of
    register_netdev().

    (cherry-picked from commit: 538271f9877c1f40c4e41f846993f964ff579908)

    Signed-off-by: Fugang Duan

    Fugang Duan
     
  • 4fea48c13   MLK-9741-01: ARM: IMX6SL-EVK: EPDC: add two ioctls to disable/enable EPDC hardware access ... Browse Code »

    The two ioctls can be used to disable/enable EPDC hardware
    access which are required by epdc user apps to do some
    sync jobs.

    Signed-off-by: Fancy Fang
    (cherry picked from commit 085c057661e7840bb5da4556a3c8844365af283a)

    Fancy Fang