[RFC] imx-drm: gamma correction for imx-ldb

[Peter Seiderer]

Attempt to add gamma correction support for imx-ldb.

The gamma correction values for the i.mx6 Display Processor registers
IPU_DP_GAMMA_C_SYNC/IPU_DP_GAMMA_S_SYNC [1,2] are given as device tree values
fsl,gamma-constk and fsl,gamma-slopek (see example values at
imx6q-sabrelite.dts calculated as suggested in [3]).

[1] http://www.freescale.com/infocenter/index.jsp?topic=%2FIMX6DQRM%2F1008258.html
[2] http://www.freescale.com/infocenter/index.jsp?topic=%2FIMX6DQRM%2F3176537.html
[3] https://github.com/boundarydevices/imx-linux-test/blob/imx_jb4.2.2_1.0.0-ga/test/mxc_fb_test/mxc_fb_test.c 

Peter Seiderer (1):
  imx-drm: gamma correction for imx-ldb

 arch/arm/boot/dts/imx6q-sabrelite.dts       |  3 +++
 drivers/staging/imx-drm/imx-drm-core.c      | 27 +++++++++++++++++++++++
 drivers/staging/imx-drm/imx-drm.h           |  4 ++++
 drivers/staging/imx-drm/imx-ldb.c           | 18 ++++++++++++++++
 drivers/staging/imx-drm/ipu-v3/imx-ipu-v3.h |  2 ++
 drivers/staging/imx-drm/ipu-v3/ipu-dp.c     | 33 +++++++++++++++++++++++++++++
 drivers/staging/imx-drm/ipuv3-crtc.c        |  9 ++++++++
 7 files changed, 96 insertions(+)

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1.8.1.4