On Tue, 03 Nov 2015, Kim, Milo wrote:

Hi Lee,

On 11/2/2015 5:59 PM, Lee Jones wrote:

quoted

quoted

 drivers/video/backlight/Kconfig                    |  62 ++

quoted

 drivers/video/backlight/Makefile                   |   7 +
 drivers/video/backlight/lm3532_bl.c                | 183 +++++
 drivers/video/backlight/lm3631_bl.c                | 129 ++++
 drivers/video/backlight/lm3632_bl.c                | 125 ++++
 drivers/video/backlight/lm3633_bl.c                | 210 ++++++
 drivers/video/backlight/lm3695_bl.c                |  91 +++
 drivers/video/backlight/lm3697_bl.c                | 187 +++++
 drivers/video/backlight/ti-lmu-backlight.c         | 429 ++++++++++++
 drivers/video/backlight/ti-lmu-backlight.h         | 152 +++++

How different are all of these drivers?

Can you create one driver that supports them all instead?

Thanks for your suggestion.

'ti-lmu-backlight' is the common part of lmxxxx_bl drivers. And each
lmxxx_bl has its own operation functions by using ti_lmu_bl_ops.
I've tried to make consolidated driver but it contained too much
device specific code in one file. So I prefer simple drivers
structure - 'common part' and 'device specific operations'.
It would be appreciated if you could introduce better idea.

I wish to avoid having to apply the patches to conduct my own analysis
of the files, as I am severely restricted on time.  Can you tell me how
much duplicated code there is between the files?  How many lines would
be saved by supporting all of the lm* drivers in a single file?

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