linux-kernel - Re: [PATCH/RFC 6/8] leds: Add support for max77693 mfd flash cell

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Date:	Thu, 20 Mar 2014 15:34:43 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	Jacek Anaszewski <j.anaszewski@...sung.com>
Cc:	linux-media@...r.kernel.org, linux-leds@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	s.nawrocki@...sung.com, a.hajda@...sung.com,
	kyungmin.park@...sung.com, Bryan Wu <cooloney@...il.com>,
	Richard Purdie <rpurdie@...ys.net>,
	SangYoung Son <hello.son@...sung.com>,
	Samuel Ortiz <sameo@...ux.intel.com>
Subject: Re: [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@...sung.com>
> Signed-off-by: Jacek Anaszewski <j.anaszewski@...sung.com>
> Acked-by: Kyungmin Park <kyungmin.park@...sung.com>
> Cc: Bryan Wu <cooloney@...il.com>
> Cc: Richard Purdie <rpurdie@...ys.net>
> Cc: SangYoung Son <hello.son@...sung.com>
> Cc: Samuel Ortiz <sameo@...ux.intel.com>
> Cc: Lee Jones <lee.jones@...aro.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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