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hue, contrast, saturation control in dss driver

prav verma
Intellectual 395 points

Hi,

I need to control hue, saturation, contrast in dss driver on DRA7xx.

Could anybody give some reference how to achieve this.

Thanks & Regards,

Prav

  • 0
    TI__Guru**** 161600 points

    Hi Prav,

    DRA7xx display settings done via linux kernel sources are very few, as far as I remember most of the settings are performed via binaries integrated in the filesystem

    You can check the DSS drivers yourself. For linux kernel (GLSDK6_10 ) they are located in drivers/video/omap2 folder. DRM sources are located in /drivers/gpu/drm/omapdrm

    Have in mind that DRA7xx documentation (Register Description & Modules Functionality) is under NDA and cannot be provided on a public forum.  You should contact your local FAE for more detailed information.

    Also, just FYI,  DRA7xx questions should be posted in OMAP5 Processor Based EVM Evaluation Forum: http://e2e.ti.com/support/omap/f/885.aspx 

    Hope this helps.

    Best Regards,

    Yordan

  • 0 in reply to Yordan Kovachev
    Intellectual 395 points

    Thanks Yordan,

    I am looking into drm & dss driver.

    Is there any source available in omap series kernel which I could use for reference?

  • 0 in reply to prav verma
    TI__Guru**** 161600 points

    Hi Prav,

    OMAP5 device have similar DSS structure, but they use outdate GLSDK6_04, which is no longer available. However situation there is similar to DRA7xx DSS settings, very limited display settings for saturation, contrast, etc. are done via kernel. Most of this tuning is available in sysfs.

    Best Regards,

    Yordan