13 Aug, 2020

1 commit

  • Rationale:
    Reduces attack surface on kernel devs opening the links for MITM
    as HTTPS traffic is much harder to manipulate.

    Deterministic algorithm:
    For each file:
    If not .svg:
    For each line:
    If doesn't contain `\bxmlns\b`:
    For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
    If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
    If both the HTTP and HTTPS versions
    return 200 OK and serve the same content:
    Replace HTTP with HTTPS.

    Signed-off-by: Alexander A. Klimov
    Acked-by: Rob Herring
    Signed-off-by: Lee Jones

    Alexander A. Klimov
     

06 Jul, 2020

1 commit

  • The kerneldocs for both tps65217_reg_write() and tps65217_update_bits()
    describe their first arguments as 'tps65217', when in reality these are
    simply called 'tps'.

    Fixes the following W=1 warnings:

    drivers/mfd/tps65217.c:215: warning: Function parameter or member 'tps' not described in 'tps65217_reg_write'
    drivers/mfd/tps65217.c:215: warning: Excess function parameter 'tps65217' description in 'tps65217_reg_write'
    drivers/mfd/tps65217.c:261: warning: Function parameter or member 'tps' not described in 'tps65217_update_bits'
    drivers/mfd/tps65217.c:261: warning: Excess function parameter 'tps65217' description in 'tps65217_update_bits'

    Cc: Tony Lindgren
    Cc: AnilKumar Ch
    Cc: linux-omap@vger.kernel.org
    Signed-off-by: Lee Jones

    Lee Jones
     

13 Oct, 2017

1 commit

  • Currently the driver boots only via device tree hence add a
    dependency on CONFIG_OF. This leaves with a bunch of unused code
    so clean that up. This patch also makes use of probe_new function
    in place of the probe function so as to avoid passing i2c_device_id.

    Signed-off-by: Keerthy
    Reviewed-by: Javier Martinez Canillas
    Signed-off-by: Lee Jones

    Keerthy
     

29 Nov, 2016

5 commits

  • TPS65217 INT pin is used for the system wakeup from suspend mode.
    This patch enables push button or charger input event as a wakeup source.

    Signed-off-by: Milo Kim
    Signed-off-by: Lee Jones

    Milo Kim
     
  • Rework the IRQ handler by using HW IRQ number and status bit.

    Each HW IRQ number is matched with TPS65217 register layout[*].
    (USB IRQ number is 0, AC is 1, Push button is 2)

    When an interrupt is enabled, mask bit should be cleared (unmasked).
    If an interrupt is disabled, then mask bit should be set (masked).
    This mask value is updated into the TPS65217 register in irq_sync_unlock().

    Mask bit and interrupt status bit can be handled with HW IRQ number.
    Eventually, additional IRQ data, 'tps65217_irqs[]' and the function,
    'irq_to_tps65217_irq()' are not necessary.

    [*] TPS65217 interrupt register layout

    Bit7 6 5 4 3 2 1 0
    ----------------------------------------------
    | x | PBM | ACM | USBM | x | PBI | ACI | USBI

    PBM: Push button status change interrupt mask
    ACM: AC interrupt mask
    USBM: USB power status change interrupt mask
    PBI: Push button status change interrupt
    ACI: AC power status change interrupt
    USBI: USB power status change interrupt
    x: Not used

    Signed-off-by: Milo Kim
    Signed-off-by: Lee Jones

    Milo Kim
     
  • TPS65217 interrupt register includes read/writeable mask bits with
    read-only status bits. (bit 4, 5, 6 are R/W, bit 0, 1, 2 are RO)
    And reserved bit is not required.

    Register update operation is preferred for disabling all interrupts during
    the device initialisation.

    Signed-off-by: Milo Kim
    Signed-off-by: Lee Jones

    Milo Kim
     
  • TPS65217 MFD is an interrupt controller and MFD slave devices like
    tps65217-charger and tps65217-pwrbutton request an interrupt to handle
    each HW event.

    Currently, TPS65217 IRQ name is not defined, so the result is as below.

    root@arm:~# cat /proc/interrupts
    ...
    182: 0 INTC 7 Level tps65217-irq
    183: 0 - 1 Edge tps65217-charger
    185: 0 - 2 Edge tps65217_pwrbutton

    This patch specifies the name of the interrupt controller.

    182: 0 INTC 7 Level tps65217-irq
    183: 0 tps65217 1 Edge tps65217-charger
    185: 0 tps65217 2 Edge tps65217_pwrbutton

    Signed-off-by: Milo Kim
    Signed-off-by: Lee Jones

    Milo Kim
     
  • TPS65217 IRQ domain should be removed and initialised as NULL when the
    module is unloaded for the next use. When tps65217.ko is loaded again,
    it causes the page fault. This patch fixes the error below.

    root@arm:~# lsmod | grep "tps"
    tps65217_charger 3538 0
    tps65218_pwrbutton 2974 0
    tps65217 6710 1 tps65217_charger

    root@arm:~# modprobe -r tps65217_charger

    root@arm:~# modprobe tps65217.ko
    [ 71.990277] Unable to handle kernel paging request at virtual address bf055944
    [ 71.998063] pgd = dd3a4000
    [ 72.000904] [bf055944] *pgd=9e6f7811, *pte=00000000, *ppte=00000000
    [ 72.007567] Internal error: Oops: 7 [#1] SMP ARM
    [ 72.012404] Modules linked in: tps65217(+) evdev musb_dsps musb_hdrc udc_core tps65218_pwrbutton usbcore phy_am335]
    [ 72.055700] CPU: 0 PID: 243 Comm: modprobe Not tainted 4.9.0-rc5-next-20161114 #3
    [ 72.063531] Hardware name: Generic AM33XX (Flattened Device Tree)
    [ 72.069899] task: de714380 task.stack: de7e6000
    [ 72.074655] PC is at irq_find_matching_fwspec+0x88/0x100
    [ 72.080211] LR is at 0xde7e79d8
    [ 72.083496] pc : [] lr : [] psr: 200e0013
    [ 72.083496] sp : de7e7a78 ip : 00000000 fp : dd138a68
    [ 72.095506] r10: c0ca04f8 r9 : 00000018 r8 : de7e7ab8
    [ 72.100973] r7 : 00000001 r6 : c0c4517c r5 : df963f68 r4 : de321980
    [ 72.107797] r3 : bf055940 r2 : de714380 r1 : 00000000 r0 : 00000000
    [ 72.114633] Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
    [ 72.122084] Control: 10c5387d Table: 9d3a4019 DAC: 00000051
    [ 72.128097] Process modprobe (pid: 243, stack limit = 0xde7e6218)
    [ 72.134489] Stack: (0xde7e7a78 to 0xde7e8000)
    [ 72.139060] 7a60: df963f68 de7e7ab8
    [ 72.147643] 7a80: 00000000 dd0e1000 dd491e20 c01a6ea0 600e0013 c01a5dc0 dd138a68 c0c45138
    [ 72.156216] 7aa0: df963f68 00000000 df963f68 dd0e1010 00000000 c01a71a4 df963f68 00000001
    [ 72.164800] 7ac0: 00000002 de7e7ac0 c80048b8 dd0adf00 df963f68 c0c4517c 00000000 de7e7b50
    [ 72.173369] 7ae0: 00000018 c0ca04f8 dd138a68 c01a5dc0 df963f68 dd0e1010 00000000 dd0e1000
    [ 72.181942] 7b00: dd491e20 c0653a70 df963f58 00000001 00000002 00000000 00000000 00000000
    [ 72.190522] 7b20: 600e0093 c0cbf8f0 c0c0512c c0193674 00000001 00000080 00000000 c0554984
    [ 72.199096] 7b40: 00000000 00000000 800e0013 c0553858 df963f68 00000000 00000000 00000000
    [ 72.207674] 7b60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    [ 72.216239] 7b80: 00000000 00000000 00000000 00000000 00000000 00000000 dd0e1000 c0544d24
    [ 72.224816] 7ba0: dd491e10 dd0e1010 dd16e800 bf1d517c bf1d5620 dd0e1010 c1497ed4 bf1d5620
    [ 72.233398] 7bc0: dd0e1010 fffffdfb bf1d5620 bf1d5620 00000000 c054537c c0545330 dd0e1010
    [ 72.241967] 7be0: c1497ed4 00000000 bf1d5620 c05433ac 00000000 00000000 de7e7c28 c0543570
    [ 72.250537] 7c00: 00000001 c1497e90 00000000 c0541884 de080cd4 dd44b7d4 dd0e1010 dd0e1010
    [ 72.259109] 7c20: dd0e1044 c05430c8 dd0e1010 00000001 dd0e1010 dd0e1018 dd0e1010 c0c9e328
    [ 72.267676] 7c40: de5d4020 c0542760 dd0e1018 dd0e1010 00000000 c0540ba8 dd138a40 c048dec4
    [ 72.276253] 7c60: 00000000 dd0e1000 00000001 dd0e1000 dd0e1010 dd0e1000 bf233de0 dd138a40
    [ 72.284829] 7c80: dd0e1010 c05450a0 000000bf 00000000 dd138a60 00000001 dd0e1000 c0571240
    [ 72.293398] 7ca0: 00000000 dd1ce9c0 00000040 dd1ce9cc bf233de0 00000003 de5d4020 ffffffff
    [ 72.301969] 7cc0: 00000004 dd0adf00 00000000 c0571408 00000000 00000000 dd0adf00 de5d4020
    [ 72.310543] 7ce0: c057146c dd1ce9c0 bf233d14 de5d4020 de7fb3d0 00000004 bf233d14 ffffffff
    [ 72.319120] 7d00: 00000018 dd49bf30 c01cedc0 c05714d0 00000000 00000000 dd0adf00 de322810
    [ 72.327692] 7d20: de322810 00000000 dd033000 000000f0 00000001 bf2333fc 00000000 00000000
    [ 72.336269] 7d40: dd0adf00 de5d4020 000000b6 bf233e40 de5d4020 bf233968 de5d4004 de5d4000
    [ 72.344848] 7d60: bf233314 c06148ac de5d4020 c1497ed4 00000000 bf233e40 00000000 c05433ac
    [ 72.353422] 7d80: 00000000 de5d4020 bf233e40 de5d4054 00000000 bf236000 00000000 c0543538
    [ 72.362002] 7da0: 00000000 bf233e40 c0543484 c05417e4 de1442a4 de5d04d0 bf233e40 de321300
    [ 72.370582] 7dc0: c0caa5a4 c05429fc bf233be0 bf233e40 c0cbfa44 bf233e40 c0cbfa44 dd2f7740
    [ 72.379148] 7de0: bf233f00 c05442f0 bf233e8c bf233e24 c0cbfa44 c0615ae0 00000000 bf233f00
    [ 72.387718] 7e00: c0cbfa44 c010186c 200f0013 c0191650 de714380 00000000 600f0013 00000040
    [ 72.396286] 7e20: dd2f7740 c018f1ac 00000001 c0c8356c 024000c0 c01a8854 c0c56e0e c028225c
    [ 72.404863] 7e40: dd2f7740 c0191984 de714380 dd2f7740 00000001 bf233f00 bf233f00 c0cbfa44
    [ 72.413440] 7e60: dd2f7740 bf233f00 00000001 dd49bf08 dd49bf30 c0230998 00000001 c0c8356c
    [ 72.421997] 7e80: c0c4c536 c0cbfa44 c0c0512c c01d2070 bf233f0c 00007fff bf233f00 c01cf5b8
    [ 72.430570] 7ea0: 00000000 c1475134 c01cee34 bf23411c bf233f48 bf234054 bf234150 00000000
    [ 72.439144] 7ec0: 024002c2 de7fbf40 0009bc20 c02776ac ff800000 00000000 00000000 bf233670
    [ 72.447723] 7ee0: 00000004 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    [ 72.456298] 7f00: 00000000 00000000 00000000 00000000 c01d2590 0000aa41 00000000 00000000
    [ 72.464862] 7f20: 000b2549 e12c3a41 00000051 de7e6000 0009bc20 c01d2630 00000530 e12b9000
    [ 72.473438] 7f40: 0000aa41 e12c1434 e12c1211 e12c336c 00001150 00001620 00000000 00000000
    [ 72.482003] 7f60: 00000000 000010fc 00000035 00000036 0000001d 0000001a 00000017 00000000
    [ 72.490564] 7f80: de7e6000 3ba39a00 0009b008 0009b718 00000080 c0107704 de7e6000 00000000
    [ 72.499141] 7fa0: 0009f609 c0107560 3ba39a00 0009b008 000a7b08 0000aa41 0009bc20 0000aa41
    [ 72.507717] 7fc0: 3ba39a00 0009b008 0009b718 00000080 00000001 00000008 0009ab14 0009f609
    [ 72.516290] 7fe0: bea31ab8 bea31aa8 0001e5eb b6e83b42 800f0030 000a7b08 0000ffff 0840ffff
    [ 72.524883] [] (irq_find_matching_fwspec) from [] (irq_create_fwspec_mapping+0x28/0x2e0)
    [ 72.535174] [] (irq_create_fwspec_mapping) from [] (irq_create_of_mapping+0x4c/0x54)
    [ 72.545115] [] (irq_create_of_mapping) from [] (of_irq_get+0x58/0x68)
    [ 72.553699] [] (of_irq_get) from [] (platform_get_irq+0x1c/0xec)
    [ 72.561828] [] (platform_get_irq) from [] (tps6521x_pb_probe+0xd0/0x1a8 [tps65218_pwrbutton])
    [ 72.572581] [] (tps6521x_pb_probe [tps65218_pwrbutton]) from [] (platform_drv_probe+0x4c/0xac)
    [ 72.583426] [] (platform_drv_probe) from [] (driver_probe_device+0x204/0x2dc)
    [ 72.592729] [] (driver_probe_device) from [] (bus_for_each_drv+0x58/0x8c)
    [ 72.601657] [] (bus_for_each_drv) from [] (__device_attach+0xb0/0x114)
    [ 72.610324] [] (__device_attach) from [] (bus_probe_device+0x88/0x90)
    [ 72.618898] [] (bus_probe_device) from [] (device_add+0x3b8/0x560)
    [ 72.627203] [] (device_add) from [] (platform_device_add+0xa8/0x208)
    [ 72.635693] [] (platform_device_add) from [] (mfd_add_device+0x240/0x338)
    [ 72.644634] [] (mfd_add_device) from [] (mfd_add_devices+0xa0/0x104)
    [ 72.653120] [] (mfd_add_devices) from [] (devm_mfd_add_devices+0x60/0xa8)
    [ 72.662077] [] (devm_mfd_add_devices) from [] (tps65217_probe+0xe8/0x2ec [tps65217])
    [ 72.672026] [] (tps65217_probe [tps65217]) from [] (i2c_device_probe+0x168/0x1f4)
    [ 72.681695] [] (i2c_device_probe) from [] (driver_probe_device+0x204/0x2dc)
    [ 72.690816] [] (driver_probe_device) from [] (__driver_attach+0xb4/0xb8)
    [ 72.699657] [] (__driver_attach) from [] (bus_for_each_dev+0x60/0x94)
    [ 72.708224] [] (bus_for_each_dev) from [] (bus_add_driver+0x18c/0x214)
    [ 72.716892] [] (bus_add_driver) from [] (driver_register+0x78/0xf8)
    [ 72.725280] [] (driver_register) from [] (i2c_register_driver+0x38/0x80)
    [ 72.734120] [] (i2c_register_driver) from [] (do_one_initcall+0x3c/0x178)
    [ 72.743055] [] (do_one_initcall) from [] (do_init_module+0x5c/0x1d0)
    [ 72.751537] [] (do_init_module) from [] (load_module+0x1d10/0x21c0)
    [ 72.759933] [] (load_module) from [] (SyS_init_module+0x110/0x154)
    [ 72.768242] [] (SyS_init_module) from [] (ret_fast_syscall+0x0/0x1c)
    [ 72.776725] Code: e5944000 e1540006 0a00001b e594300c (e593c004)
    [ 72.783181] ---[ end trace 0278ec325f4689b8 ]---

    Fixes: 6556bdacf646 ("mfd: tps65217: Add support for IRQs")
    Signed-off-by: Milo Kim
    Signed-off-by: Lee Jones

    Milo Kim
     

04 Oct, 2016

3 commits

  • The tps65217 gained a new warning when building with W=1:

    drivers/mfd/tps65217.c:85:1: error: 'inline' is not at beginning of declaration [-Werror=old-style-declaration]

    This fixes it by putting the 'inline' modifier before 'const'.

    Fixes: 262d5cc6ceb2 ("mfd: tps65217: Add support for IRQs")
    Signed-off-by: Arnd Bergmann
    Signed-off-by: Lee Jones

    Arnd Bergmann
     
  • Add tps65217 power buttor subdevice with assigned IRQ resources.

    Signed-off-by: Marcin Niestroj
    Acked-by: Tony Lindgren
    Signed-off-by: Lee Jones

    Marcin Niestroj
     
  • Add support for handling IRQs: power button, AC and USB power state
    changes. Mask and interrupt bits are shared within one register, which
    prevents us to use regmap_irq implementation. New irq_domain is created in
    order to add interrupt handling for each tps65217's subsystem. IRQ
    resources have been added for charger subsystem to be able to notify about
    AC and USB state changes.

    Signed-off-by: Marcin Niestroj
    Reviewed-by: Grygorii Strashko
    Tested-by: Tony Lindgren
    Signed-off-by: Lee Jones

    Marcin Niestroj
     

19 Apr, 2016

1 commit


26 Oct, 2015

1 commit


11 Aug, 2015

2 commits


23 Jan, 2015

1 commit


26 Nov, 2014

1 commit


26 Sep, 2014

1 commit


19 Feb, 2014

1 commit


24 Jan, 2014

1 commit


06 Jan, 2014

1 commit

  • As of commit 03e361b25ee8dfb1fd9b890072c23c4aae01c6c7 ("mfd: Stop setting
    refcounting pointers in original mfd_cell arrays"), the "cell" parameter of
    mfd_add_devices() is "const" again. Hence make all cell data passed to
    mfd_add_devices() const where possible.

    Signed-off-by: Geert Uytterhoeven
    Signed-off-by: Lee Jones

    Geert Uytterhoeven
     

23 Oct, 2013

1 commit


17 Dec, 2012

1 commit

  • Pull MFS update from Samuel Ortiz:
    "This is the MFD patch set for the 3.8 merge window.

    We have several new drivers, most of the time coming with their sub
    devices drivers:

    - Austria Microsystem's AS3711
    - Nano River's viperboard
    - TI's TPS80031, AM335x TS/ADC,
    - Realtek's MMC/memstick card reader
    - Nokia's retu

    We also got some notable cleanups and improvements:

    - tps6586x got converted to IRQ domains.
    - tps65910 and tps65090 moved to the regmap IRQ API.
    - STMPE is now Device Tree aware.
    - A general twl6040 and twl-core cleanup, with moves to the regmap
    I/O and IRQ APIs and a conversion to the recently added PWM
    framework.
    - sta2x11 gained regmap support.

    Then the rest is mostly tiny cleanups and fixes, among which we have
    Mark's wm5xxx and wm8xxx patchset."

    Far amount of annoying but largely trivial conflicts. Many due to
    __devinit/exit removal, others due to one or two of the new drivers also
    having come in through another tree.

    * tag 'mfd-3.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (119 commits)
    mfd: tps6507x: Convert to devm_kzalloc
    mfd: stmpe: Update DT support for stmpe driver
    mfd: wm5102: Add readback of DSP status 3 register
    mfd: arizona: Log if we fail to create the primary IRQ domain
    mfd: tps80031: MFD_TPS80031 needs to select REGMAP_IRQ
    mfd: tps80031: Add terminating entry for tps80031_id_table
    mfd: sta2x11: Fix potential NULL pointer dereference in __sta2x11_mfd_mask()
    mfd: wm5102: Add tuning for revision B
    mfd: arizona: Defer patch initialistation until after first device boot
    mfd: tps65910: Fix wrong ack_base register
    mfd: tps65910: Remove unused data
    mfd: stmpe: Get rid of irq_invert_polarity
    mfd: ab8500-core: Fix invalid free of devm_ allocated data
    mfd: wm5102: Mark DSP memory regions as volatile
    mfd: wm5102: Correct default for LDO1_CONTROL_2
    mfd: arizona: Register haptics devices
    mfd: wm8994: Make current device behaviour the default
    mfd: tps65090: MFD_TPS65090 needs to select REGMAP_IRQ
    mfd: Fix stmpe.c build when OF is not enabled
    mfd: jz4740-adc: Use devm_kzalloc
    ...

    Linus Torvalds
     

29 Nov, 2012

3 commits

  • CONFIG_HOTPLUG is going away as an option so __devexit is no
    longer needed.

    Signed-off-by: Bill Pemberton
    Cc: Srinidhi Kasagar
    Cc: Peter Tyser
    Cc: Daniel Walker
    Cc: Bryan Huntsman
    Acked-by: David Brown
    Acked-by: Linus Walleij
    Acked-by: Mark Brown
    Signed-off-by: Greg Kroah-Hartman

    Bill Pemberton
     
  • CONFIG_HOTPLUG is going away as an option so __devinit is no longer
    needed.

    Signed-off-by: Bill Pemberton
    Cc: Srinidhi Kasagar
    Cc: Peter Tyser
    Cc: Daniel Walker
    Cc: Bryan Huntsman
    Acked-by: David Brown
    Acked-by: Mark Brown
    Signed-off-by: Greg Kroah-Hartman

    Bill Pemberton
     
  • CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer
    needed.

    Signed-off-by: Bill Pemberton
    Cc: Srinidhi Kasagar
    Cc: Peter Tyser
    Cc: Daniel Walker
    Cc: Bryan Huntsman
    Acked-by: David Brown
    Acked-by: Linus Walleij
    Acked-by: Mark Brown
    Signed-off-by: Greg Kroah-Hartman

    Bill Pemberton
     

21 Nov, 2012

1 commit

  • Set tps65217 PMIC status to OFF if power enable toggle is supported.
    By setting this bit to 1 to enter PMIC to OFF state when PWR_EN pin
    is pulled low. Also adds a DT flag to specify that device pmic
    supports shutdown control or not.

    Signed-off-by: Colin Foe-Parker
    [anilkumar@ti.com: move the additions to tps65217 MFD driver]
    Signed-off-by: AnilKumar Ch
    Signed-off-by: Samuel Ortiz

    Colin Foe-Parker
     

25 Sep, 2012

1 commit


14 Sep, 2012

1 commit

  • Currently the MFD core supports remapping MFD cell interrupts using an
    irqdomain but only if the MFD is being instantiated using device tree
    and only if the device tree bindings use the pattern of registering IPs
    in the device tree with compatible properties. This will be actively
    harmful for drivers which support non-DT platforms and use this pattern
    for their DT bindings as it will mean that the core will silently change
    remapping behaviour and it is also limiting for drivers which don't do
    DT with this particular pattern. There is also a potential fragility if
    there are interrupts not associated with MFD cells and all the cells are
    omitted from the device tree for some reason.

    Instead change the code to take an IRQ domain as an optional argument,
    allowing drivers to take the decision about the parent domain for their
    interrupts. The one current user of this feature is ab8500-core, it has
    the domain lookup pushed out into the driver.

    Signed-off-by: Mark Brown
    Signed-off-by: Samuel Ortiz

    Mark Brown
     

22 Aug, 2012

1 commit

  • Regulator platform data handling was mistakenly added to MFD
    driver. So we will see build errors if we compile MFD drivers
    without CONFIG_REGULATOR. This patch moves regulator platform
    data handling from TPS65217 MFD driver to regulator driver.

    This makes MFD driver independent of REGULATOR framework so
    build error is fixed if CONFIG_REGULATOR is not set.

    drivers/built-in.o: In function `tps65217_probe':
    tps65217.c:(.devinit.text+0x13e37): undefined reference
    to `of_regulator_match'

    This patch also fix allocation size of tps65217 platform data.
    Current implementation allocates a struct tps65217_board for each
    regulator specified in the device tree. But the structure itself
    provides array of regulators so one instance of it is sufficient.

    Signed-off-by: AnilKumar Ch

    AnilKumar Ch
     

13 Jul, 2012

1 commit


20 May, 2012

1 commit


09 May, 2012

1 commit


07 Mar, 2012

1 commit

  • The TPS65217 chip is a power management IC for Portable Navigation Systems
    and Tablet Computing devices. It contains the following components:

    - Regulators
    - White LED
    - USB battery charger

    This patch adds support for tps65217 mfd device. At this time only
    the regulator functionality is made available.

    Signed-off-by: AnilKumar Ch
    Reviwed-by: Mark Brown
    Signed-off-by: Samuel Ortiz

    AnilKumar Ch