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1What: /sys/devices/platform/sh_mobile_lcdc_fb.[0-3]/graphics/fb[0-9]/ovl_alpha2Date: May 20123Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>4Description:5 This file is only available on fb[0-9] devices corresponding6 to overlay planes.7 8 Stores the alpha blending value for the overlay. Values range9 from 0 (transparent) to 255 (opaque). The value is ignored if10 the mode is not set to Alpha Blending.11 12What: /sys/devices/platform/sh_mobile_lcdc_fb.[0-3]/graphics/fb[0-9]/ovl_mode13Date: May 201214Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>15Description:16 This file is only available on fb[0-9] devices corresponding17 to overlay planes.18 19 Selects the composition mode for the overlay. Possible values20 are:21 22 - 0 - Alpha Blending23 - 1 - ROP324 25What: /sys/devices/platform/sh_mobile_lcdc_fb.[0-3]/graphics/fb[0-9]/ovl_position26Date: May 201227Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>28Description:29 This file is only available on fb[0-9] devices corresponding30 to overlay planes.31 32 Stores the x,y overlay position on the display in pixels. The33 position format is `[0-9]+,[0-9]+`.34 35What: /sys/devices/platform/sh_mobile_lcdc_fb.[0-3]/graphics/fb[0-9]/ovl_rop336Date: May 201237Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>38Description:39 This file is only available on fb[0-9] devices corresponding40 to overlay planes.41 42 Stores the raster operation (ROP3) for the overlay. Values43 range from 0 to 255. The value is ignored if the mode is not44 set to ROP3.45