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    Subject[PATCH v3 0/4] regulator: core: support shared enable GPIO
    Date
    A Regulator can be enabled by external GPIO pin which is configurable in the
    regulator_config.
    At this moment, the GPIO can be owned by only one regulator device.
    In some devices like LP8788 LDOs, multiple regulators are enabled by shared
    one GPIO pin.
    This patch-set enables shared enable GPIO concept and fix LP8788 LDO driver
    as well.

    Patches were generated based on 'for-next' of regulator.git
    (git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git)

    Patch v3.
    a) Add a reference count, 'request_count' which makes sure only free the GPIO
    when it has no users
    b) Make return type of regulator_ena_gpio_ctrl()
    c) Free the GPIO when kzalloc() gets failed in regulator_ena_gpio_request()
    d) Add a pointer to the GPIO structure to the regulator_dev on setting the GPIO
    : use a GPIO structure directly instead of scanning the GPIO list

    Patch v2.
    a) Add a list for enable GPIO
    b) Add a reference count, 'enable_count' for actual pin control

    Patch v1.
    Initial patch

    Milo(Woogyom) Kim (4):
    regulator: core: support shared enable GPIO concept
    regulator: core: manage enable GPIO list
    regulator: core: use regulator_ena_pin member
    regulator: lp8788-ldo: use ena_pin of regulator-core for external control

    drivers/regulator/core.c | 142 +++++++++++++++++++++++++++++++++-----
    drivers/regulator/lp8788-ldo.c | 98 +++++---------------------
    include/linux/regulator/driver.h | 4 +-
    3 files changed, 142 insertions(+), 102 deletions(-)

    --
    1.7.9.5


    Best Regards,
    Milo




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