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 <vaibhav.bedia@xxxxxx>
Cc: Russ Dill <russ.dill@xxxxxx>
Cc: Santosh Shilimkar <santosh.shilimkar@xxxxxx>
---
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
--
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