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

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On Friday 02 November 2012 06:02 PM, Vaibhav Bedia 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@xxxxxx>
---
  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;

  	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
#ifdef in middle of the function looks really ugly. But I can't complain
just for your patch because looks like rest of the mailbox code is
flooded with #ifdeffery.

Mailbox needs cleanup. and probably can be moved out of
arch/arm/*omap*/ to some driver directory.

Regards
santosh


inside arch/arm/mach-omap2/* directory.




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