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30 Jan, 2016

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21 Jan, 2016

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  • U-Boot has separate code for LCDs and 'video' devices. Both now use a
    very similar API thanks to earlier work by Nikita Kiryanov. With the driver-
    model conversion we should unify these into a single uclass.

    Unfortunately there are different features supported by each. This
    implementation provides for a common set of features which should serve
    most purposes. The intent is to support:

    - bitmap devices with 8, 16 and 32 bits per pixel
    - text console wih white on black or vice versa
    - rotated text console
    - bitmap display (BMP format)

    More can be added as additional boards are ported over to use driver model
    for video.

    The name 'video' is chosen for the uclass since it is more generic than LCD.
    Another option would be 'display' but that would introduce a third concept
    to U-Boot which seems like the wrong approach.

    The existing LCD and video init functions are not needed now, so this uclass
    makes no attempt to implement them.

    Signed-off-by: Simon Glass
    Acked-by: Anatolij Gustschin

    Simon Glass
     

20 Apr, 2015

1 commit


23 Jul, 2014

1 commit

  • At present stdio device functions do not get any clue as to which stdio
    device is being acted on. Some implementations go to great lengths to work
    around this, such as defining a whole separate set of functions for each
    possible device.

    For driver model we need to associate a stdio_dev with a device. It doesn't
    seem possible to continue with this work-around approach.

    Instead, add a stdio_dev pointer to each of the stdio member functions.

    Note: The serial drivers have the same problem, but it is not strictly
    necessary to fix that to get driver model running. Also, if we convert
    serial over to driver model the problem will go away.

    Code size increases by 244 bytes for Thumb2 and 428 for PowerPC.

    22: stdio: Pass device pointer to stdio methods
    arm: (for 2/2 boards) all +244.0 bss -4.0 text +248.0
    powerpc: (for 1/1 boards) all +428.0 text +428.0

    Signed-off-by: Simon Glass
    Acked-by: Marek Vasut
    Reviewed-by: Marek Vasut

    Simon Glass
     

28 Aug, 2013

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25 May, 2012

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04 Nov, 2001

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