[PATCH 02/15] ARM: OMAP2+: mailbox: Add support for AM33XX

[Russ Dill]

On Fri, Nov 2, 2012 at 5:32 AM, Vaibhav Bedia <vaibhav.bedia at ti.com> wrote:
> Mailbox IP on AM33XX, is the same as that present
> in OMAP4. The single instance of Mailbox module
> contains 8 sub-modules and facilitates communication
> between MPU, PRUs and WKUP_M3.
>
> The first mailbox sub-module is assigned for
> communication between MPU and WKUP-M3.
>
> Signed-off-by: Vaibhav Bedia <vaibhav.bedia at ti.com>
> ---
>  arch/arm/mach-omap2/mailbox.c |   35 ++++++++++++++++++++++++++++++++++-
>  1 files changed, 34 insertions(+), 1 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/mailbox.c b/arch/arm/mach-omap2/mailbox.c
> index f38b4fa..7a343aa 100644
> --- a/arch/arm/mach-omap2/mailbox.c
> +++ b/arch/arm/mach-omap2/mailbox.c
> @@ -155,7 +155,7 @@ static void omap2_mbox_disable_irq(struct omap_mbox *mbox,
>         struct omap_mbox2_priv *p = mbox->priv;
>         u32 bit = (irq == IRQ_TX) ? p->notfull_bit : p->newmsg_bit;
>
> -       if (!cpu_is_omap44xx())
> +       if (!cpu_is_omap44xx() || !soc_is_am33xx())
>                 bit = mbox_read_reg(p->irqdisable) & ~bit;

Do you mean &&?

>         mbox_write_reg(bit, p->irqdisable);
> @@ -358,6 +358,32 @@ struct omap_mbox mbox_2_info = {
>  struct omap_mbox *omap4_mboxes[] = { &mbox_1_info, &mbox_2_info, NULL };
>  #endif
>
> +#if defined(CONFIG_SOC_AM33XX)
> +static struct omap_mbox2_priv omap2_mbox_wkup_m3_priv = {
> +       .tx_fifo = {
> +               .msg            = MAILBOX_MESSAGE(0),
> +               .fifo_stat      = MAILBOX_FIFOSTATUS(0),
> +               .msg_stat       = MAILBOX_MSGSTATUS(0),
> +       },
> +       .rx_fifo = {
> +               .msg            = MAILBOX_MESSAGE(1),
> +               .msg_stat       = MAILBOX_MSGSTATUS(1),
> +       },
> +       .irqenable      = OMAP4_MAILBOX_IRQENABLE(3),
> +       .irqstatus      = OMAP4_MAILBOX_IRQSTATUS(3),
> +       .irqdisable     = OMAP4_MAILBOX_IRQENABLE_CLR(3),
> +       .notfull_bit    = MAILBOX_IRQ_NOTFULL(0),
> +       .newmsg_bit     = MAILBOX_IRQ_NEWMSG(0),
> +};
> +
> +struct omap_mbox mbox_wkup_m3_info = {
> +       .name   = "wkup_m3",
> +       .ops    = &omap2_mbox_ops,
> +       .priv   = &omap2_mbox_wkup_m3_priv,
> +};
> +struct omap_mbox *am33xx_mboxes[] = { &mbox_wkup_m3_info, NULL };
> +#endif
> +
>  static int __devinit omap2_mbox_probe(struct platform_device *pdev)
>  {
>         struct resource *mem;
> @@ -392,6 +418,13 @@ static int __devinit omap2_mbox_probe(struct platform_device *pdev)
>                 list[0]->irq = list[1]->irq = platform_get_irq(pdev, 0);
>         }
>  #endif
> +#if defined(CONFIG_SOC_AM33XX)
> +       else if (soc_is_am33xx()) {
> +               list = am33xx_mboxes;
> +
> +               list[0]->irq = platform_get_irq(pdev, 0);
> +       }
> +#endif
>         else {
>                 pr_err("%s: platform not supported\n", __func__);
>                 return -ENODEV;
> --
> 1.7.0.4
>
> --
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