pinctrl: sh-pfc: Reduce kernel size for narrow VIN channels

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Some VIN channels support less than 24 lanes.  As union vin_data always
consumes space for 24 lanes, this wastes memory.

Hence introduce new smaller unions vin_data12 and vin_data16, to
accommodate VIN channels with only 12 or 16 lanes.

This reduces the static pin controller driver size by 320 bytes for
R-Car V2H, and by 96 bytes for R-Car E2.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>

...

This commit is contained in:

Geert Uytterhoeven 2018-10-16 09:46:12 +02:00

parent 9f8dc8e2b1

commit 50f3f2d73e

3 changed files with 25 additions and 12 deletions

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16

drivers/pinctrl/sh-pfc/pfc-r8a7792.c

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4

drivers/pinctrl/sh-pfc/pfc-r8a7794.c

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17

drivers/pinctrl/sh-pfc/sh_pfc.h

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