[PATCH v3 2/5] OMAP: mailbox: fix rx interrupt disable in omap4

[b-cousson@ti.com (Cousson, Benoit)]

On 11/18/2010 8:15 PM, Hari Kanigeri wrote:
> disabling rx interrupt on omap4 is different than its pre-decessors.
> The bit in OMAP4_MAILBOX_IRQENABLE_CLR should be set to disable the
> interrupts instead of clearing the bit.
>
> Signed-off-by: Hari Kanigeri<h-kanigeri2@ti.com>
> ---
>   arch/arm/mach-omap2/mailbox.c |    5 ++++-
>   1 files changed, 4 insertions(+), 1 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/mailbox.c b/arch/arm/mach-omap2/mailbox.c
> index 42dbfa4..82b5ced 100644
> --- a/arch/arm/mach-omap2/mailbox.c
> +++ b/arch/arm/mach-omap2/mailbox.c
> @@ -195,7 +195,10 @@ static void omap2_mbox_disable_irq(struct omap_mbox *mbox,
>   	struct omap_mbox2_priv *p = (struct omap_mbox2_priv *)mbox->priv;
>   	u32 l, bit = (irq == IRQ_TX) ? p->notfull_bit : p->newmsg_bit;
>   	l = mbox_read_reg(p->irqdisable);
> -	l&= ~bit;
> +	if (cpu_is_omap44xx())

Since it is not omap version specific but IP version specific, you 
should not use cpu_is_ to do that. Moreover cpu_is calls should be used 
during init only.
You can use the rev field in hwmod_class in order to detect the IP version.
Smartreflex series for 3630 is already using that kind of mechanism.
You will have to copy that revision information into pdata struct and 
then use that here.

Benoit

> +		l |= bit;
> +	else
> +		l&= ~bit;
>   	mbox_write_reg(l, p->irqdisable);
>   }
>