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Diffstat (limited to 'arch/arm/mach-omap2/mailbox.c')
-rw-r--r--arch/arm/mach-omap2/mailbox.c47
1 files changed, 34 insertions, 13 deletions
diff --git a/arch/arm/mach-omap2/mailbox.c b/arch/arm/mach-omap2/mailbox.c
index 281ab634244..52a981cb8fd 100644
--- a/arch/arm/mach-omap2/mailbox.c
+++ b/arch/arm/mach-omap2/mailbox.c
@@ -40,6 +40,9 @@
#define AUTOIDLE (1 << 0)
#define SOFTRESET (1 << 1)
#define SMARTIDLE (2 << 3)
+#define OMAP4_SOFTRESET (1 << 0)
+#define OMAP4_NOIDLE (1 << 2)
+#define OMAP4_SMARTIDLE (2 << 2)
/* SYSSTATUS: register bit definition */
#define RESETDONE (1 << 0)
@@ -93,29 +96,47 @@ static int omap2_mbox_startup(struct omap_mbox *mbox)
mbox_ick_handle = clk_get(NULL, "mailboxes_ick");
if (IS_ERR(mbox_ick_handle)) {
- printk(KERN_ERR "Could not get mailboxes_ick: %d\n",
+ printk(KERN_ERR "Could not get mailboxes_ick: %ld\n",
PTR_ERR(mbox_ick_handle));
return PTR_ERR(mbox_ick_handle);
}
clk_enable(mbox_ick_handle);
- mbox_write_reg(SOFTRESET, MAILBOX_SYSCONFIG);
- timeout = jiffies + msecs_to_jiffies(20);
- do {
- l = mbox_read_reg(MAILBOX_SYSSTATUS);
- if (l & RESETDONE)
- break;
- } while (!time_after(jiffies, timeout));
-
- if (!(l & RESETDONE)) {
- pr_err("Can't take mmu out of reset\n");
- return -ENODEV;
+ if (cpu_is_omap44xx()) {
+ mbox_write_reg(OMAP4_SOFTRESET, MAILBOX_SYSCONFIG);
+ timeout = jiffies + msecs_to_jiffies(20);
+ do {
+ l = mbox_read_reg(MAILBOX_SYSCONFIG);
+ if (!(l & OMAP4_SOFTRESET))
+ break;
+ } while (!time_after(jiffies, timeout));
+
+ if (l & OMAP4_SOFTRESET) {
+ pr_err("Can't take mailbox out of reset\n");
+ return -ENODEV;
+ }
+ } else {
+ mbox_write_reg(SOFTRESET, MAILBOX_SYSCONFIG);
+ timeout = jiffies + msecs_to_jiffies(20);
+ do {
+ l = mbox_read_reg(MAILBOX_SYSSTATUS);
+ if (l & RESETDONE)
+ break;
+ } while (!time_after(jiffies, timeout));
+
+ if (!(l & RESETDONE)) {
+ pr_err("Can't take mailbox out of reset\n");
+ return -ENODEV;
+ }
}
l = mbox_read_reg(MAILBOX_REVISION);
pr_info("omap mailbox rev %d.%d\n", (l & 0xf0) >> 4, (l & 0x0f));
- l = SMARTIDLE | AUTOIDLE;
+ if (cpu_is_omap44xx())
+ l = OMAP4_SMARTIDLE;
+ else
+ l = SMARTIDLE | AUTOIDLE;
mbox_write_reg(l, MAILBOX_SYSCONFIG);
omap2_mbox_enable_irq(mbox, IRQ_RX);