Author: wmb Date: Wed Aug 29 02:12:35 2012 New Revision: 3235 URL: http://tracker.coreboot.org/trac/openfirmware/changeset/3235
Log: OLPC ARM - Set reg and compatible properties in the /image-sensor node dynamically, by probing for the specific chip that is present. This requires the assistance of the camera driver, because the image sensor won't respond to its I2C bus unless it has a clock from the CCIC camera unit.
Modified: dev/olpc/imagesensor.fth dev/olpc/mmp2camera/loadpkg.fth dev/olpc/ov7670.fth dev/olpc/seti.fth
Modified: dev/olpc/imagesensor.fth ============================================================================== --- dev/olpc/imagesensor.fth Wed Aug 29 02:10:05 2012 (r3234) +++ dev/olpc/imagesensor.fth Wed Aug 29 02:12:35 2012 (r3235) @@ -12,3 +12,21 @@ : sensor-found? ( -- flag ) false ; +: set-sensor-properties ( name$ i2c-addr -- ) + my-self >r 0 to my-self + " /image-sensor" find-device ( name$ i2c-addr ) + " reg" get-property if ( name$ i2c-addr ) + 1 reg ( name$ ) + +compatible ( ) + else ( name$ i2c-addr regval$ ) + 2drop 3drop ( ) + then + device-end + r> to my-self +; + +also forth definitions +: probe-image-sensor ( -- ) + " /camera" open-dev close-dev +; +previous definitions
Modified: dev/olpc/mmp2camera/loadpkg.fth ============================================================================== --- dev/olpc/mmp2camera/loadpkg.fth Wed Aug 29 02:10:05 2012 (r3234) +++ dev/olpc/mmp2camera/loadpkg.fth Wed Aug 29 02:12:35 2012 (r3235) @@ -10,6 +10,8 @@ cam-rst-gpio# 0 encode-gpio " gpios" property
+ " /image-sensor" encode-phandle " image-sensor" property + 0 [if] : alloc-capture-buffer ( len -- vadr padr ) \ XXX need map-in if we should use virtual mode
Modified: dev/olpc/ov7670.fth ============================================================================== --- dev/olpc/ov7670.fth Wed Aug 29 02:10:05 2012 (r3234) +++ dev/olpc/ov7670.fth Wed Aug 29 02:12:35 2012 (r3235) @@ -166,6 +166,7 @@ then ( )
" OV7670" " sensor" string-property + " omnivision,ov7670" camera-smb-slave set-sensor-properties
['] ov7670-set-mirrored to set-mirrored ['] ov7670-config to camera-config
Modified: dev/olpc/seti.fth ============================================================================== --- dev/olpc/seti.fth Wed Aug 29 02:10:05 2012 (r3234) +++ dev/olpc/seti.fth Wed Aug 29 02:12:35 2012 (r3235) @@ -306,6 +306,7 @@ h# 12 <> if false exit then ( )
" SETi,SIV120D" " sensor" string-property + " seti,siv120d" camera-smb-slave set-sensor-properties
['] seti-set-mirrored to set-mirrored ['] seti-config to camera-config