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    SubjectRe: [PATCH/RFC 6/8] leds: Add support for max77693 mfd flash cell
    On Thu, 20 Mar 2014, Jacek Anaszewski wrote:

    > This patch adds led-flash support to Maxim max77693 chipset.
    > Device can be exposed to user space through LED subsystem
    > sysfs interface or through V4L2 subdevice when the support
    > for Multimedia Framework is enabled. Device supports up to
    > two leds which can work in flash and torch mode. Leds can
    > be triggered externally or by software.
    >
    > Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
    > Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
    > Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
    > Cc: Bryan Wu <cooloney@gmail.com>
    > Cc: Richard Purdie <rpurdie@rpsys.net>
    > Cc: SangYoung Son <hello.son@smasung.com>
    > Cc: Samuel Ortiz <sameo@linux.intel.com>
    > Cc: Lee Jones <lee.jones@linaro.org>
    > ---
    > drivers/leds/Kconfig | 9 +
    > drivers/leds/Makefile | 1 +
    > drivers/leds/leds-max77693.c | 768 ++++++++++++++++++++++++++++++++++++++++++
    > drivers/mfd/max77693.c | 21 +-
    > include/linux/mfd/max77693.h | 32 ++
    > 5 files changed, 825 insertions(+), 6 deletions(-)
    > create mode 100644 drivers/leds/leds-max77693.c

    [...]

    > diff --git a/drivers/mfd/max77693.c b/drivers/mfd/max77693.c
    > index c5535f0..6fa92d3 100644
    > --- a/drivers/mfd/max77693.c
    > +++ b/drivers/mfd/max77693.c
    > @@ -41,12 +41,21 @@
    > #define I2C_ADDR_MUIC (0x4A >> 1)
    > #define I2C_ADDR_HAPTIC (0x90 >> 1)
    >
    > -static const struct mfd_cell max77693_devs[] = {
    > - { .name = "max77693-pmic", },
    > - { .name = "max77693-charger", },
    > - { .name = "max77693-flash", },
    > - { .name = "max77693-muic", },
    > - { .name = "max77693-haptic", },
    > +enum mfd_devs_idx {
    > + IDX_PMIC,
    > + IDX_CHARGER,
    > + IDX_LED,
    > + IDX_MUIC,
    > + IDX_HAPTIC,
    > +};
    > +
    > +static struct mfd_cell max77693_devs[] = {
    > + [IDX_PMIC] = { .name = "max77693-pmic", },
    > + [IDX_CHARGER] = { .name = "max77693-charger", },
    > + [IDX_LED] = { .name = "max77693-led",
    > + .of_compatible = "maxim,max77693-led"},
    > + [IDX_MUIC] = { .name = "max77693-muic", },
    > + [IDX_HAPTIC] = { .name = "max77693-haptic", },
    > };

    What is the purpose of this change?

    --
    Lee Jones
    Linaro STMicroelectronics Landing Team Lead
    Linaro.org │ Open source software for ARM SoCs
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