[PATCH 11/12] mfd: twl4030-irq: Return twl6030_mmc_card_detect IRQ for board setup

[Felipe Balbi]

Hi,

On Fri, Mar 02, 2012 at 05:50:23PM +0100, Benoit Cousson wrote:
> Card detect IRQ from the TWL6030 used to be provided to the MMC
> controller code using a statically allocated IRQ scheme:
> 
>   card_detect_irq = TWL6030_IRQ_BASE + MMCDETECT_INTR_OFFSET;
> 
> This is no longer valid in a SPARSE_IRQ context since there is no more
> pre-defined TWL6030_IRQ_BASE.
> 
> Return the proper card detect IRQ value in the twl6030_mmc_card_detect_config
> that will be called from the MMC controller.
> 
> Signed-off-by: Benoit Cousson <b-cousson at ti.com>
> Cc: Felipe Balbi <balbi at ti.com>
> Cc: Tony Lindgren <tony at atomide.com>
> Cc: Rajendra Nayak <rnayak at ti.com>

Reviewed-by: Felipe Balbi <balbi at ti.com>

> ---
>  drivers/mfd/twl6030-irq.c |    3 ++-
>  1 files changed, 2 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/mfd/twl6030-irq.c b/drivers/mfd/twl6030-irq.c
> index a1c7183..4a63de2 100644
> --- a/drivers/mfd/twl6030-irq.c
> +++ b/drivers/mfd/twl6030-irq.c
> @@ -308,7 +308,8 @@ int twl6030_mmc_card_detect_config(void)
>  									ret);
>  		return ret;
>  	}
> -	return 0;
> +
> +	return twl6030_irq_base + MMCDETECT_INTR_OFFSET;
>  }
>  EXPORT_SYMBOL(twl6030_mmc_card_detect_config);

At some point this twl6030_mmc_card_detect_config() needs to vanish in
favor of a better mechanism. Maybe passing the GPIO number an requiring
the driver to request the GPIO, set its direction and use it as IRQ
line.

the only problem would arise if we end up hooking the Card Detect pin to
a real IRQ line, but then we can use a flag to differentiate.

-- 
balbi
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