[U-Boot] [PATCH 2/5] input: Provide a board specific mechanism to decide whether to skip i8042 init

[Tom Rini]

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On 10/11/12 18:15, Simon Glass wrote:
> From: Gabe Black <gabeblack at chromium.org>
> 
> This change adds a board overridable function which can be used to
> decide whether or not to initialize the i8042 keyboard controller.
> On systems where it isn't actually connected to anything, this can
> save a significant amount of boot time.
> 
> On Stumpy, this saves about 200ms on boot.
> 
> Signed-off-by: Gabe Black <gabeblack at chromium.org> Signed-off-by:
> Simon Glass <sjg at chromium.org> --- drivers/input/i8042.c |   13
> ++++++++++++- 1 files changed, 12 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/input/i8042.c b/drivers/input/i8042.c index
> 99254e4..cae2d0a 100644 --- a/drivers/input/i8042.c +++
> b/drivers/input/i8042.c @@ -320,6 +320,17 @@ static int
> kbd_controller_present(void) return in8(I8042_STATUS_REG) != 0xff; 
> }
> 
> +/* + * Implement a weak default function for boards that
> optionally + * need to skip the i8042 initialization. + */ +int
> __board_i8042_skip(void) +{ +	/* As default, don't skip */ +	return
> 0; +} +int board_i8042_skip(void) __attribute__((weak,
> alias("__board_i8042_skip")));

Please add <linux/compiler.h> and use __weak directly, thanks.

- -- 
Tom
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