Mailbox IP on AM33XX is the same as that present in OMAP4. The single instance of Mailbox IP on AM33XX 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 <[email protected]> Cc: Russ Dill <[email protected]> Cc: Santosh Shilimkar <[email protected]> --- v1->v2: Address the comment on operator usage from Russ Dill drivers/mailbox/mailbox-omap2.c | 35 ++++++++++++++++++++++++++++++++++- 1 files changed, 34 insertions(+), 1 deletions(-) diff --git a/drivers/mailbox/mailbox-omap2.c b/drivers/mailbox/mailbox-omap2.c index 7c26bed..6d61159 100644 --- a/drivers/mailbox/mailbox-omap2.c +++ b/drivers/mailbox/mailbox-omap2.c @@ -151,7 +151,7 @@ static void omap2_mbox_disable_irq(struct mailbox *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; mbox_write_reg(bit, p->irqdisable); @@ -352,6 +352,32 @@ struct mailbox mbox_2_info = { struct mailbox *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 mailbox mbox_wkup_m3_info = { + .name = "wkup_m3", + .ops = &omap2_mbox_ops, + .priv = &omap2_mbox_wkup_m3_priv, +}; +struct mailbox *am33xx_mboxes[] = { &mbox_wkup_m3_info, NULL }; +#endif + static int __devinit omap2_mbox_probe(struct platform_device *pdev) { struct resource *mem; @@ -386,6 +412,13 @@ 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 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
