On Tue, Mar 26, 2013 at 11:28:46AM +0800, Jia Hongtao wrote:
> MPIC version is useful information for both mpic_alloc() and mpic_init().
> The patch provide an API to get MPIC version for reusing the code.
> Also, some other IP block may need MPIC version for their own use.
> The API for external use is also provided.
>
> Signed-off-by: Jia Hongtao <hongtao....@freescale.com>
> Signed-off-by: Li Yang <le...@freescale.com>
> ---
> arch/powerpc/include/asm/mpic.h | 3 +++
> arch/powerpc/sysdev/mpic.c | 30 +++++++++++++++++++++++-------
> 2 files changed, 26 insertions(+), 7 deletions(-)
>
> diff --git a/arch/powerpc/include/asm/mpic.h b/arch/powerpc/include/asm/mpic.h
> index c0f9ef9..95053d6 100644
> --- a/arch/powerpc/include/asm/mpic.h
> +++ b/arch/powerpc/include/asm/mpic.h
> @@ -393,6 +393,9 @@ struct mpic
> #define MPIC_REGSET_STANDARD MPIC_REGSET(0) /* Original
> MPIC */
> #define MPIC_REGSET_TSI108 MPIC_REGSET(1) /* Tsi108/109
> PIC */
>
> +/* Get the mpic version */
> +extern u32 mpic_primary_get_version(void);
> +
> /* Allocate the controller structure and setup the linux irq descs
> * for the range if interrupts passed in. No HW initialization is
> * actually performed.
> diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
> index d30e6a6..d6b6fb6 100644
> --- a/arch/powerpc/sysdev/mpic.c
> +++ b/arch/powerpc/sysdev/mpic.c
> @@ -1165,10 +1165,31 @@ static struct irq_domain_ops mpic_host_ops = {
> .xlate = mpic_host_xlate,
> };
>
> +static u32 mpic_get_version(struct mpic *mpic)
> +{
> + u32 brr1;
> +
> + brr1 = _mpic_read(mpic->reg_type, &mpic->thiscpuregs,
> + MPIC_FSL_BRR1);
> +
> + return brr1 & MPIC_FSL_BRR1_VER;
> +}
> +
> /*
> * Exported functions
> */
>
> +u32 mpic_primary_get_version(void)
> +{
> + u32 brr1;
> + struct mpic *mpic = mpic_primary;
> +
> + brr1 = _mpic_read(mpic->reg_type, &mpic->thiscpuregs,
> + MPIC_FSL_BRR1);
> +
> + return brr1 & MPIC_FSL_BRR1_VER;
> +}
Why doesn't mpic_primary_get_version() call mpic_get_version() ?
cheers
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